configure.in

dnl -*- Mode: Autoconf; tab-width: 4; indent-tabs-mode: nil; -*-
dnl vi: set tabstop=4 shiftwidth=4 expandtab syntax=m4:
dnl This Source Code Form is subject to the terms of the Mozilla Public
dnl License, v. 2.0. If a copy of the MPL was not distributed with this
dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.

dnl Process this file with autoconf to produce a configure script.
dnl ========================================================

AC_PREREQ(2.13)
AC_INIT(config/config.mk)
AC_CONFIG_AUX_DIR(${srcdir}/build/autoconf)
AC_CANONICAL_SYSTEM
TARGET_CPU="${target_cpu}"
TARGET_VENDOR="${target_vendor}"
TARGET_OS="${target_os}"

dnl ========================================================
dnl =
dnl = Don't change the following two lines.  Doing so breaks:
dnl =
dnl = CFLAGS="-foo" ./configure
dnl =
dnl ========================================================
CFLAGS="${CFLAGS=}"
CPPFLAGS="${CPPFLAGS=}"
CXXFLAGS="${CXXFLAGS=}"
LDFLAGS="${LDFLAGS=}"
HOST_CFLAGS="${HOST_CFLAGS=}"
HOST_CXXFLAGS="${HOST_CXXFLAGS=}"
HOST_LDFLAGS="${HOST_LDFLAGS=}"
RUSTFLAGS="${RUSTFLAGS=}"

dnl ========================================================
dnl = Preserve certain environment flags passed to configure
dnl = We want sub projects to receive the same flags
dnl = untainted by this configure script
dnl ========================================================
_SUBDIR_CC="$CC"
_SUBDIR_CXX="$CXX"
_SUBDIR_CFLAGS="$CFLAGS"
_SUBDIR_CPPFLAGS="$CPPFLAGS"
_SUBDIR_CXXFLAGS="$CXXFLAGS"
_SUBDIR_LDFLAGS="$LDFLAGS"
_SUBDIR_HOST_CC="$HOST_CC"
_SUBDIR_HOST_CFLAGS="$HOST_CFLAGS"
_SUBDIR_HOST_CXXFLAGS="$HOST_CXXFLAGS"
_SUBDIR_HOST_LDFLAGS="$HOST_LDFLAGS"
_SUBDIR_CONFIG_ARGS="$ac_configure_args"

dnl Set the version number of the libs included with mozilla
dnl ========================================================
MOZJPEG=62
MOZPNG=10617
NSPR_VERSION=4
NSPR_MINVER=4.10.8
NSS_VERSION=3

dnl Set the minimum version of toolkit libs used by mozilla
dnl ========================================================
GLIB_VERSION=2.22
# 2_26 is the earliest version we can set GLIB_VERSION_MIN_REQUIRED.
# The macro won't be used when compiling with earlier versions anyway.
GLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_26
GIO_VERSION=2.22
PERL_VERSION=5.006
CAIRO_VERSION=1.10
PANGO_VERSION=1.22.0
GTK2_VERSION=2.18.0
GTK3_VERSION=3.4.0
WINDRES_VERSION=2.14.90
W32API_VERSION=3.14
GNOMEUI_VERSION=2.2.0
GCONF_VERSION=1.2.1
STARTUP_NOTIFICATION_VERSION=0.8
DBUS_VERSION=0.60
SQLITE_VERSION=3.8.11.1

MSMANIFEST_TOOL=

dnl Set various checks
dnl ========================================================
MISSING_X=
AC_PROG_AWK

dnl Initialize the Pthread test variables early so they can be
dnl  overridden by each platform.
dnl ========================================================
MOZ_USE_PTHREADS=
_PTHREAD_LDFLAGS=""

dnl Do not allow objdir == srcdir builds.
dnl ==============================================================
_topsrcdir=`cd \`dirname $0\`; pwd`
_objdir=`pwd`

dnl TODO Don't exempt L10N builds once bug 842760 is resolved.
if test "$_topsrcdir" = "$_objdir" -a "${with_l10n_base+set}" != set; then
  echo "  ***"
  echo "  * Building directly in the main source directory is not allowed."
  echo "  *"
  echo "  * To build, you must run configure from a separate directory"
  echo "  * (referred to as an object directory)."
  echo "  *"
  echo "  * If you are building with a mozconfig, you will need to change your"
  echo "  * mozconfig to point to a different object directory."
  echo "  ***"
  exit 1
fi

# Check for a couple representative files in the source tree
_conflict_files=
for file in $_topsrcdir/Makefile $_topsrcdir/config/autoconf.mk; do
  if test -f $file; then
    _conflict_files="$_conflict_files $file"
  fi
done
if test "$_conflict_files"; then
  echo "***"
  echo "*   Your source tree contains these files:"
  for file in $_conflict_files; do
    echo "*         $file"
  done
  cat 1>&2 <<-EOF
  *   This indicates that you previously built in the source tree.
  *   A source tree build can confuse the separate objdir build.
  *
  *   To clean up the source tree:
  *     1. cd $_topsrcdir
  *     2. gmake distclean
  ***
EOF
  exit 1
  break
fi
MOZ_BUILD_ROOT=`pwd -W 2>/dev/null || pwd`

MOZ_PYTHON

MOZ_BUILD_BACKEND

MOZ_DEFAULT_COMPILER

COMPILE_ENVIRONMENT=1
MOZ_ARG_DISABLE_BOOL(compile-environment,
[  --disable-compile-environment
                          Disable compiler/library checks.],
    COMPILE_ENVIRONMENT= )
AC_SUBST(COMPILE_ENVIRONMENT)

MOZ_ARG_WITH_STRING(l10n-base,
[  --with-l10n-base=DIR    path to l10n repositories],
    L10NBASEDIR=$withval)
if test -n "$L10NBASEDIR"; then
    if test "$L10NBASEDIR" = "yes" -o "$L10NBASEDIR" = "no"; then
        AC_MSG_ERROR([--with-l10n-base must specify a path])
    elif test -d "$L10NBASEDIR"; then
        L10NBASEDIR=`cd "$L10NBASEDIR" && pwd`
    else
        AC_MSG_ERROR([Invalid value --with-l10n-base, $L10NBASEDIR doesn't exist])
    fi
fi
AC_SUBST(L10NBASEDIR)

dnl Check for Perl first -- needed for win32 SDK checks
MOZ_PATH_PROGS(PERL, $PERL perl5 perl )
if test -z "$PERL" -o "$PERL" = ":"; then
    AC_MSG_ERROR([perl not found in \$PATH])
fi

if test -n "$MOZTTDIR" -a ! -d "$MOZTTDIR" ; then
    AC_MSG_ERROR([MOZTTDIR '$MOZTTDIR' isn't a valid directory])
fi

AC_SUBST(MOZTTDIR)
if test -n "$MOZTTDIR" ; then
    AC_DEFINE(PACKAGE_MOZTT)
fi

MOZ_ARG_WITH_STRING(gonk,
[  --with-gonk=DIR
               location of gonk dir],
    gonkdir=$withval)

MOZ_ARG_WITH_STRING(gonk-toolchain-prefix,
[  --with-gonk-toolchain-prefix=DIR
                          prefix to gonk toolchain commands],
    gonk_toolchain_prefix=$withval)

if test -n "$gonkdir" ; then
    kernel_name=`uname -s | tr "[[:upper:]]" "[[:lower:]]"`
    android_source="$gonkdir"
    ANDROID_SOURCE="$android_source"
    ANDROID_NDK="${ANDROID_SOURCE}/ndk"
    dnl Default to ICS
    ANDROID_VERSION=15
    if test -n "${PLATFORM_SDK_VERSION}"; then
        ANDROID_VERSION="${PLATFORM_SDK_VERSION}"
    fi

    dnl set up compilers
    TOOLCHAIN_PREFIX="$gonk_toolchain_prefix"
    AS="$gonk_toolchain_prefix"as
    CC="$gonk_toolchain_prefix"gcc
    CXX="$gonk_toolchain_prefix"g++
    CPP="$gonk_toolchain_prefix"cpp
    LD="$gonk_toolchain_prefix"ld
    AR="$gonk_toolchain_prefix"ar
    RANLIB="$gonk_toolchain_prefix"ranlib
    STRIP="$gonk_toolchain_prefix"strip
    OBJCOPY="$gonk_toolchain_prefix"objcopy

    if ! test -e "$gonkdir/ndk/sources/cxx-stl/stlport/src/iostream.cpp"; then
        AC_MSG_ERROR([Couldn't find path to stlport sources in the gonk tree])
    fi
    STLPORT_CPPFLAGS="-I$_topsrcdir/build/stlport/stlport -I$gonkdir/ndk/sources/cxx-stl/system/include"

    case "$ANDROID_VERSION" in
    15)
        GONK_INCLUDES="-I$gonkdir/frameworks/base/opengl/include -I$gonkdir/frameworks/base/native/include -I$gonkdir/frameworks/base/include -I$gonkdir/frameworks/base/services/camera -I$gonkdir/frameworks/base/include/media/ -I$gonkdir/frameworks/base/include/media/stagefright -I$gonkdir/frameworks/base/include/media/stagefright/openmax -I$gonkdir/frameworks/base/media/libstagefright/rtsp -I$gonkdir/frameworks/base/media/libstagefright/include -I$gonkdir/external/dbus -I$gonkdir/external/bluetooth/bluez/lib -I$gonkdir/dalvik/libnativehelper/include/nativehelper"
        MOZ_B2G_BT=1
        MOZ_B2G_BT_BLUEZ=1
        MOZ_NFC=1
        MOZ_B2G_CAMERA=1
        MOZ_OMX_DECODER=1
        AC_SUBST(MOZ_OMX_DECODER)
        MOZ_RTSP=1
        MOZ_FMP4=1
        MOZ_SECUREELEMENT=1
        ;;
    17|18)
        GONK_INCLUDES="-I$gonkdir/frameworks/native/include -I$gonkdir/frameworks/av/include -I$gonkdir/frameworks/av/include/media -I$gonkdir/frameworks/av/include/camera -I$gonkdir/frameworks/native/include/media/openmax -I$gonkdir/frameworks/av/media/libstagefright/include -I$gonkdir/external/mdnsresponder/mDNSShared"
        if test -d "$gonkdir/external/bluetooth/bluez"; then
            GONK_INCLUDES="$GONK_INCLUDES -I$gonkdir/external/dbus -I$gonkdir/external/bluetooth/bluez/lib"
            MOZ_B2G_BT=1
            MOZ_B2G_BT_BLUEZ=1
        elif test -d "$gonkdir/system/bluetoothd"; then
            MOZ_B2G_BT=1
            MOZ_B2G_BT_DAEMON=1
        fi

        MOZ_RTSP=1
        MOZ_NFC=1
        MOZ_B2G_CAMERA=1
        MOZ_OMX_DECODER=1
        AC_SUBST(MOZ_OMX_DECODER)
        MOZ_OMX_ENCODER=1
        AC_SUBST(MOZ_OMX_ENCODER)
        AC_DEFINE(MOZ_OMX_ENCODER)
        MOZ_FMP4=1
        MOZ_SECUREELEMENT=1
        ;;
    19)
        GONK_INCLUDES="-I$gonkdir/frameworks/native/include -I$gonkdir/frameworks/av/include -I$gonkdir/frameworks/av/include/media -I$gonkdir/frameworks/av/include/camera -I$gonkdir/frameworks/native/include/media/openmax -I$gonkdir/frameworks/av/media/libstagefright/include -I$gonkdir/external/mdnsresponder/mDNSShared"
        MOZ_B2G_CAMERA=1
        if test -d "$gonkdir/system/bluetoothd"; then
            MOZ_B2G_BT=1
            MOZ_B2G_BT_DAEMON=1
        fi
        MOZ_NFC=1
        MOZ_RTSP=1
        MOZ_OMX_DECODER=1
        MOZ_OMX_ENCODER=1
        AC_DEFINE(MOZ_OMX_ENCODER)
        MOZ_AUDIO_OFFLOAD=1
        MOZ_SECUREELEMENT=1
        AC_SUBST(MOZ_AUDIO_OFFLOAD)
        AC_DEFINE(MOZ_AUDIO_OFFLOAD)
        MOZ_FMP4=1
        ;;
    21|22)
        GONK_INCLUDES="-I$gonkdir/frameworks/native/include -I$gonkdir/frameworks/av/include -I$gonkdir/frameworks/av/include/media -I$gonkdir/frameworks/av/include/camera -I$gonkdir/frameworks/native/include/media/openmax -I$gonkdir/frameworks/av/media/libstagefright/include -I$gonkdir/external/mdnsresponder/mDNSShared"
        MOZ_AUDIO_OFFLOAD=1
        MOZ_OMX_DECODER=1
        MOZ_OMX_ENCODER=1
        AC_DEFINE(MOZ_OMX_ENCODER)
        AC_SUBST(MOZ_AUDIO_OFFLOAD)
        AC_DEFINE(MOZ_AUDIO_OFFLOAD)
        MOZ_FMP4=
        MOZ_B2G_CAMERA=1
        if test -d "$gonkdir/system/bluetoothd"; then
            MOZ_B2G_BT=1
            MOZ_B2G_BT_DAEMON=1
        fi
        MOZ_NFC=1
        MOZ_RTSP=1
        ;;
    *)
        AC_MSG_ERROR([Unsupported platform version: $ANDROID_VERSION])
        ;;
    esac
    CPPFLAGS="-DANDROID $TARGET_C_INCLUDES -I$gonkdir/system -I$gonkdir/system/core/include -isystem $gonkdir/bionic -I$gonkdir/hardware/libhardware/include -I$gonkdir/external/valgrind/fxos-include $GONK_INCLUDES $CPPFLAGS"
    CFLAGS="-mandroid -fno-short-enums -fno-exceptions $CFLAGS"
    CXXFLAGS="-mandroid -fno-short-enums -fno-exceptions -Wno-psabi $CXXFLAGS $STLPORT_CPPFLAGS"
    dnl Add -llog by default, since we use it all over the place.
    LIBS="$LIBS -llog"

    LDFLAGS="-mandroid -L$gonkdir/out/target/product/$GONK_PRODUCT/obj/lib -Wl,-rpath-link=$gonkdir/out/target/product/$GONK_PRODUCT/obj/lib --sysroot=$gonkdir/out/target/product/$GONK_PRODUCT/obj/ $LDFLAGS"

    dnl prevent cross compile section from using these flags as host flags
    if test -z "$HOST_CPPFLAGS" ; then
        HOST_CPPFLAGS=" "
    fi
    if test -z "$HOST_CFLAGS" ; then
        HOST_CFLAGS=" "
    fi
    if test -z "$HOST_CXXFLAGS" ; then
        HOST_CXXFLAGS=" "
    fi
    if test -z "$HOST_LDFLAGS" ; then
        HOST_LDFLAGS=" "
    fi

    AC_DEFINE(ANDROID)
    AC_DEFINE_UNQUOTED(ANDROID_VERSION, $ANDROID_VERSION)
    AC_SUBST(ANDROID_VERSION)
    AC_DEFINE(HAVE_SYS_UIO_H)
    AC_DEFINE(HAVE_PTHREADS)
    MOZ_CHROME_FILE_FORMAT=omni
    direct_nspr_config=1
    android_cxx_stl=mozstlport
else
    MOZ_ANDROID_NDK

    case "$target" in
    *-android*|*-linuxandroid*)
        if test -z "$ANDROID_PACKAGE_NAME" ; then
            ANDROID_PACKAGE_NAME='org.mozilla.$(MOZ_APP_NAME)'
        fi
        MOZ_CHROME_FILE_FORMAT=omni
        ZLIB_DIR=yes
        ;;
    *-linux*)
        AC_PATH_PROG(OBJCOPY,objcopy)
        ;;
    esac
fi

case "$target" in
*-apple-darwin*)
    MOZ_IOS_SDK
    ;;
esac

AC_SUBST(ANDROID_SOURCE)
AC_SUBST(ANDROID_PACKAGE_NAME)
AC_SUBST(OBJCOPY)

dnl ========================================================
dnl Checks for compilers.
dnl ========================================================

dnl AR_FLAGS set here so HOST_AR_FLAGS can be set correctly (see bug 538269)
AR_FLAGS='crs $@'

if test -z "$COMPILE_ENVIRONMENT"; then
if test "$target" != "$host"; then
# Assert that we're cross compiling, but don't require a compile toolchain (as
# MOZ_CROSS_COMPILER does below).
CROSS_COMPILE=1
AC_DEFINE(CROSS_COMPILE)
fi
fi # !COMPILE_ENVIRONMENT

if test "$COMPILE_ENVIRONMENT"; then

if test "$target" != "$host"; then
    MOZ_CROSS_COMPILER
else
    AC_PROG_CC
    case "$target" in
    *-mingw*)
      # Work around the conftest.exe access problem on Windows
      sleep 2
    esac
    AC_PROG_CXX
    AC_PROG_RANLIB
    MOZ_PATH_PROGS(AS, $AS as, $CC)
    AC_CHECK_PROGS(AR, ar, :)
    AC_CHECK_PROGS(LD, ld, :)
    AC_CHECK_PROGS(STRIP, strip, :)
    AC_CHECK_PROGS(WINDRES, windres, :)
    AC_CHECK_PROGS(OTOOL, otool, :)
    if test -z "$HOST_CC"; then
        HOST_CC="$CC"
    fi
    if test -z "$HOST_CFLAGS"; then
        HOST_CFLAGS="$CFLAGS"
    fi
    if test -z "$HOST_CXX"; then
        HOST_CXX="$CXX"
    fi
    if test -z "$HOST_CXXFLAGS"; then
        HOST_CXXFLAGS="$CXXFLAGS"
    fi
    if test -z "$HOST_LDFLAGS"; then
        HOST_LDFLAGS="$LDFLAGS"
    fi
    if test -z "$HOST_RANLIB"; then
        HOST_RANLIB="$RANLIB"
    fi
    if test -z "$HOST_AR"; then
        HOST_AR="$AR"
    fi
    if test -z "$HOST_AR_FLAGS"; then
        HOST_AR_FLAGS="$AR_FLAGS"
    fi
fi

if test -n "$MOZ_WINCONSOLE"; then
    AC_DEFINE(MOZ_WINCONSOLE)
fi

MOZ_TOOL_VARIABLES

MOZ_CHECK_COMPILER_WRAPPER

MOZ_RUST_SUPPORT

dnl ========================================================
dnl Check for MacOS deployment target version
dnl ========================================================

MOZ_ARG_ENABLE_STRING(macos-target,
                      [  --enable-macos-target=VER (default=10.6)
                          Set the minimum MacOS version needed at runtime],
                      [_MACOSX_DEPLOYMENT_TARGET=$enableval])

case "$target" in
*-darwin*)
    if test -n "$_MACOSX_DEPLOYMENT_TARGET" ; then
        dnl Use the specified value
        export MACOSX_DEPLOYMENT_TARGET=$_MACOSX_DEPLOYMENT_TARGET
    else
        dnl No value specified on the command line or in the environment,
        dnl use architecture minimum.
        export MACOSX_DEPLOYMENT_TARGET=10.6
    fi
    ;;
esac

AC_SUBST(MACOSX_DEPLOYMENT_TARGET)

dnl ========================================================
dnl Special MacOS X checks
dnl ========================================================

if test -n "$MACOSX_DEPLOYMENT_TARGET" -a -n "$MOZ_RUST"; then
  AC_MSG_CHECKING([rustc compatibility with MacOS X])
  # Stock rustc doesn't support MacOS X 10.6 or earlier.
  # https://github.com/rust-lang/rust/issues/25342
  _MACOSX_TARGET_MINOR=`echo "$MACOSX_DEPLOYMENT_TARGET" | cut -d. -f2`
  if test "$_MACOSX_TARGET_MINOR" -lt 7; then
    dnl Test C linkage against rust code to see if the rust
    dnl toolchain output is compatible.
    cat > conftest.rs <<EOF
      [#[no_mangle]]
      pub extern fn rusty_answer() -> u8 { 42 }
EOF
    ac_try="$RUSTC --crate-type staticlib -o conftest.a conftest.rs >/dev/null"
    AC_TRY_EVAL(ac_try)
    save_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS conftest.a -lpthread -lm"
    AC_TRY_LINK_FUNC([rusty_answer], [
      AC_MSG_RESULT([$MACOSX_DEPLOYMENT_TARGET is ok with this rustc])
    ], [
      AC_MSG_RESULT([cannot link on $MACOSX_DEPLOYMENT_TARGET])
      MOZ_RUST=
    ])
    LDFLAGS=$save_LDFLAGS
    rm -rf conftest*
  else
    AC_MSG_RESULT([$MACOSX_DEPLOYMENT_TARGET is ok])
  fi
  if test -z "$MOZ_RUST"; then
    AC_MSG_ERROR([rustc does not support MacOS X $MACOSX_DEPLOYMENT_TARGET
      Add 'ac_add_options --enable-macos-target=10.7' (or later)
      to mozconfig, disable Rust support, or use an alternate toolchain.])
  fi
fi

AC_PROG_CPP
AC_PROG_CXXCPP

dnl ========================================================
dnl Special win32 checks
dnl ========================================================

# Target the Windows 8.1 SDK by default
WINSDK_TARGETVER=603
WINVER=502

MOZ_ARG_WITH_STRING(windows-version,
[  --with-windows-version=WINSDK_TARGETVER
                          Windows SDK version to target. Win8.1 (603) is
                          currently the minimum supported version.],
  WINSDK_TARGETVER=$withval)

# Currently only version 603 is allowed
case "$WINSDK_TARGETVER" in
603)
    MOZ_WINSDK_TARGETVER=0${WINSDK_TARGETVER}0000
    ;;

*)
    AC_MSG_ERROR([Invalid value for --with-windows-version ($WINSDK_TARGETVER)]);
    ;;
esac

case "$target" in
*-mingw*)
    if test "$GCC" != "yes"; then
        # Check to see if we are really running in a msvc environemnt
        _WIN32_MSVC=1
        AC_CHECK_PROGS(MIDL, midl)

        # Make sure compilers are valid
        CFLAGS="$CFLAGS -TC -nologo"
        CXXFLAGS="$CXXFLAGS -TP -nologo"
        AC_LANG_SAVE
        AC_LANG_C
        AC_TRY_COMPILE([#include <stdio.h>],
            [ printf("Hello World\n"); ],,
            AC_MSG_ERROR([\$(CC) test failed.  You must have MS VC++ in your path to build.]) )

        AC_LANG_CPLUSPLUS
        AC_TRY_COMPILE([#include <new.h>],
            [ unsigned *test = new unsigned(42); ],,
            AC_MSG_ERROR([\$(CXX) test failed.  You must have MS VC++ in your path to build.]) )
        AC_LANG_RESTORE

        changequote(,)
        _MSVC_VER_FILTER='s|.*[^!-~]([0-9]+\.[0-9]+\.[0-9]+(\.[0-9]+)?).*|\1|p'
        changequote([,])

        # Determine compiler version
        _CC_MAJOR_VERSION=`echo ${MSVC_VERSION_FULL} | cut -c 1-2`
        _CC_MINOR_VERSION=`echo ${MSVC_VERSION_FULL} | cut -c 3-4`
        _CC_BUILD_VERSION=`echo ${MSVC_VERSION_FULL} | cut -c 5-`
        _MSC_VER=${CC_VERSION}

        _CXX_MAJOR_VERSION=`echo ${CXX_VERSION} | cut -c 1-2`

        if test "$_CC_MAJOR_VERSION" != "$_CXX_MAJOR_VERSION"; then
            AC_MSG_ERROR([The major versions of \$CC and \$CXX do not match.])
        fi

        AC_DEFINE(_CRT_SECURE_NO_WARNINGS)
        AC_DEFINE(_CRT_NONSTDC_NO_WARNINGS)

        if test "$_CC_MAJOR_VERSION" = "18" -a "$_CC_BUILD_VERSION" -ge "30723"; then
            _CC_SUITE=12
            MSVS_VERSION=2013
            MSVC_C_RUNTIME_DLL=msvcr120.dll
            MSVC_CXX_RUNTIME_DLL=msvcp120.dll
        elif test "$_CC_MAJOR_VERSION" = "19"; then
            _CC_SUITE=14
            MSVS_VERSION=2015
            MSVC_C_RUNTIME_DLL=vcruntime140.dll
            MSVC_CXX_RUNTIME_DLL=msvcp140.dll
            MSVC_APPCRT_DLL=appcrt140.dll
            MSVC_DESKTOPCRT_DLL=desktopcrt140.dll

            # -Wv:18 disables all warnings introduced after VS2013
            # See http://blogs.msdn.com/b/vcblog/archive/2014/11/12/improvements-to-warnings-in-the-c-compiler.aspx
            CFLAGS="$CFLAGS -Wv:18"
            CXXFLAGS="$CXXFLAGS -Wv:18"

            # -Zc:sizedDealloc- disables C++14 global sized deallocation (see bug 1160146)
            CXXFLAGS="$CXXFLAGS -Zc:sizedDealloc-"

            # https://connect.microsoft.com/VisualStudio/feedback/details/888527/warnings-on-dbghelp-h
            # for dbghelp.h, imagehlp.h, and shobj.h
            # C4091: 'typedef ': ignored on left of '' when no variable is declared
            CFLAGS="$CFLAGS -wd4091"
            CXXFLAGS="$CXXFLAGS -wd4091"
        else
            AC_MSG_ERROR([This version (${_CC_MAJOR_VERSION}.${_CC_MINOR_VERSION}.${_CC_BUILD_VERSION}) of the MSVC compiler is unsupported.
You must install Visual C++ 2013 Update 3 or newer in order to build.
See https://developer.mozilla.org/en/Windows_Build_Prerequisites.])
        fi
        AC_SUBST(MSVS_VERSION)
        AC_SUBST(MSVC_C_RUNTIME_DLL)
        AC_SUBST(MSVC_CXX_RUNTIME_DLL)
        AC_SUBST(MSVC_APPCRT_DLL)
        AC_SUBST(MSVC_DESKTOPCRT_DLL)

        # Disable SEH on clang-cl because it doesn't implement them yet.
        if test -z "$CLANG_CL"; then
            AC_DEFINE(HAVE_SEH_EXCEPTIONS)
        else
            # Send our CFLAGS to NSS
            MOZ_CFLAGS_NSS=1
            AC_DEFINE_UNQUOTED(GTEST_HAS_SEH, 0)
        fi

        if test -n "$WIN32_REDIST_DIR"; then
          if test ! -d "$WIN32_REDIST_DIR"; then
            AC_MSG_ERROR([Invalid Win32 Redist directory: ${WIN32_REDIST_DIR}])
          fi
          WIN32_REDIST_DIR=`cd "$WIN32_REDIST_DIR" && pwd`
        fi

        dnl Ensure that mt.exe is 'Microsoft (R) Manifest Tool',
        dnl not something else like "magnetic tape manipulation utility".
        MSMT_TOOL=`${MT-mt} 2>&1|grep 'Microsoft (R) Manifest Tool'`
        if test -z "$MSMT_TOOL"; then
          AC_MSG_ERROR([Microsoft (R) Manifest Tool must be in your \$PATH.])
        fi

        changequote(,)
        _MSMT_VER_FILTER='s|.*[^!-~]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\).*|\1|p'
        changequote([,])
        MSMANIFEST_TOOL_VERSION=`echo ${MSMT_TOOL}|sed -ne "$_MSMT_VER_FILTER"`
        if test -z "$MSMANIFEST_TOOL_VERSION"; then
          AC_MSG_WARN([Unknown version of the Microsoft (R) Manifest Tool.])
        fi

        MSMANIFEST_TOOL=1
        unset MSMT_TOOL

        # Check linker version
        _LD_FULL_VERSION=`"${LD}" -v 2>&1 | sed -nre "$_MSVC_VER_FILTER"`
        _LD_MAJOR_VERSION=`echo ${_LD_FULL_VERSION} | $AWK -F\. '{ print $1 }'`
        if test "$_LD_MAJOR_VERSION" != "$_CC_SUITE"; then
            AC_MSG_ERROR([The linker major version, $_LD_FULL_VERSION,  does not match the compiler suite version, $_CC_SUITE.])
        fi

        INCREMENTAL_LINKER=1

        # Set midl environment
        case "$target" in
        i*86-*)
            MIDL_FLAGS="${MIDL_FLAGS} -env win32"
            ;;
        x86_64-*)
            MIDL_FLAGS="${MIDL_FLAGS} -env x64"
            ;;
        esac

        unset _MSVC_VER_FILTER

        AC_CACHE_CHECK(for overridable _RAISE,
                       ac_cv_have__RAISE,
            [
                AC_LANG_SAVE
                AC_LANG_CPLUSPLUS
                _SAVE_CXXFLAGS="$CXXFLAGS"
                CXXFLAGS="${CXXFLAGS} -D_HAS_EXCEPTIONS=0"
                AC_TRY_COMPILE([#include <xstddef>
                                #undef _RAISE
                                #define _RAISE(x) externallyDefinedFunction((x).what())
                                #include <vector>
                               ],
                               [std::vector<int> v; return v.at(1);],
                               ac_cv_have__RAISE="no",
                               ac_cv_have__RAISE="yes")
                CXXFLAGS="$_SAVE_CXXFLAGS"
                AC_LANG_RESTORE
            ])
        if test "$ac_cv_have__RAISE" = "yes"; then
            WRAP_STL_INCLUDES=1
            MOZ_MSVC_STL_WRAP_RAISE=1
            AC_DEFINE(MOZ_MSVC_STL_WRAP_RAISE)
        else
            AC_MSG_ERROR([Gecko exception wrapping doesn't understand your your MSVC/SDK.  Please file a bug describing this error and your build configuration.])
        fi

        if test "$WRAP_STL_INCLUDES" = "1"; then
            STL_FLAGS='-I$(DIST)/stl_wrappers'
        fi
        CFLAGS="$CFLAGS -D_HAS_EXCEPTIONS=0"
        CXXFLAGS="$CXXFLAGS -D_HAS_EXCEPTIONS=0"
    else
        # Check w32api version
        _W32API_MAJOR_VERSION=`echo $W32API_VERSION | $AWK -F\. '{ print $1 }'`
        _W32API_MINOR_VERSION=`echo $W32API_VERSION | $AWK -F\. '{ print $2 }'`
        AC_MSG_CHECKING([for w32api version >= $W32API_VERSION])
        AC_TRY_COMPILE([#include <w32api.h>],
            #if (__W32API_MAJOR_VERSION < $_W32API_MAJOR_VERSION) || \
                (__W32API_MAJOR_VERSION == $_W32API_MAJOR_VERSION && \
                 __W32API_MINOR_VERSION < $_W32API_MINOR_VERSION)
                #error "test failed."
            #endif
            , [ res=yes ], [ res=no ])
        AC_MSG_RESULT([$res])
        if test "$res" != "yes"; then
            AC_MSG_ERROR([w32api version $W32API_VERSION or higher required.])
        fi
        # Check windres version
        AC_MSG_CHECKING([for windres version >= $WINDRES_VERSION])
        _WINDRES_VERSION=`${WINDRES} --version 2>&1 | grep -i windres 2>/dev/null | $AWK '{ print $3 }'`
        AC_MSG_RESULT([$_WINDRES_VERSION])
        _WINDRES_MAJOR_VERSION=`echo $_WINDRES_VERSION | $AWK -F\. '{ print $1 }'`
        _WINDRES_MINOR_VERSION=`echo $_WINDRES_VERSION | $AWK -F\. '{ print $2 }'`
        _WINDRES_RELEASE_VERSION=`echo $_WINDRES_VERSION | $AWK -F\. '{ print $3 }'`
        WINDRES_MAJOR_VERSION=`echo $WINDRES_VERSION | $AWK -F\. '{ print $1 }'`
        WINDRES_MINOR_VERSION=`echo $WINDRES_VERSION | $AWK -F\. '{ print $2 }'`
        WINDRES_RELEASE_VERSION=`echo $WINDRES_VERSION | $AWK -F\. '{ print $3 }'`
        if test "$_WINDRES_MAJOR_VERSION" -lt "$WINDRES_MAJOR_VERSION" -o \
                "$_WINDRES_MAJOR_VERSION" -eq "$WINDRES_MAJOR_VERSION" -a \
                "$_WINDRES_MINOR_VERSION" -lt "$WINDRES_MINOR_VERSION" -o \
                "$_WINDRES_MAJOR_VERSION" -eq "$WINDRES_MAJOR_VERSION" -a \
                "$_WINDRES_MINOR_VERSION" -eq "$WINDRES_MINOR_VERSION" -a \
                "$_WINDRES_RELEASE_VERSION" -lt "$WINDRES_RELEASE_VERSION"
        then
            AC_MSG_ERROR([windres version $WINDRES_VERSION or higher is required to build.])
        fi

        AC_CHECK_PROGS(MIDL, $target-widl widl)
        if test -n "$MIDL"; then
            case "$target" in
            i*86-*)
                MIDL_FLAGS="$MIDL_FLAGS --win32 -m32"
                ;;
            x86_64-*)
                MIDL_FLAGS="$MIDL_FLAGS --win64 -m64"
                ;;
            esac
        fi

        # strsafe.h on mingw uses macros for function deprecation that pollutes namespace
        # causing problems with local implementations with the same name.
        AC_DEFINE(STRSAFE_NO_DEPRECATE)
    fi # !GNU_CC

    MOZ_FIND_WINSDK_VERSION
    AC_DEFINE_UNQUOTED(WINVER,0x$WINVER)
    AC_DEFINE_UNQUOTED(_WIN32_WINNT,0x$WINVER)
    # Require OS features provided by IE 6.0 SP2 (XP SP2)
    AC_DEFINE_UNQUOTED(_WIN32_IE,0x0603)

    # If the maximum version supported by this SDK is lower than the target
    # version, error out
    AC_MSG_CHECKING([for Windows SDK being recent enough])
    if $PERL -e "exit(0x$MOZ_WINSDK_TARGETVER > $MOZ_WINSDK_MAXVER)"; then
        AC_MSG_RESULT("yes")
    else
        AC_MSG_RESULT("no")
        AC_MSG_ERROR([You are targeting Windows version 0x$MOZ_WINSDK_TARGETVER, but your SDK only supports up to version $MOZ_WINSDK_MAXVER. Install and use an updated SDK, or target a lower version using --with-windows-version. Alternatively, try running the Windows SDK Configuration Tool and selecting a newer SDK. See https://developer.mozilla.org/En/Windows_SDK_versions for more details on fixing this.])
    fi

    AC_DEFINE_UNQUOTED(MOZ_WINSDK_TARGETVER,0x$MOZ_WINSDK_TARGETVER)
    AC_DEFINE_UNQUOTED(MOZ_WINSDK_MAXVER,$MOZ_WINSDK_MAXVER)
    AC_SUBST(MOZ_WINSDK_MAXVER)
    ;;
esac

if test -n "$_WIN32_MSVC"; then
    SKIP_PATH_CHECKS=1
    SKIP_COMPILER_CHECKS=1
    SKIP_LIBRARY_CHECKS=1

    # Since we're skipping compiler and library checks, hard-code
    # some facts here.
    AC_DEFINE(HAVE_IO_H)
    AC_DEFINE(HAVE_SETBUF)
    AC_DEFINE(HAVE_ISATTY)
fi

fi # COMPILE_ENVIRONMENT

AC_SUBST(MIDL_FLAGS)
AC_SUBST(_MSC_VER)

AC_SUBST(GNU_AS)
AC_SUBST(GNU_LD)
AC_SUBST(GNU_CC)
AC_SUBST(GNU_CXX)
AC_SUBST(INTEL_CC)
AC_SUBST(INTEL_CXX)

AC_SUBST(STL_FLAGS)
AC_SUBST(WRAP_STL_INCLUDES)
AC_SUBST(MOZ_MSVC_STL_WRAP_RAISE)

dnl ========================================================
dnl Checks for programs.
dnl ========================================================
AC_PROG_INSTALL
AC_PROG_LN_S

AC_MSG_CHECKING([for minimum required perl version >= $PERL_VERSION])
_perl_version=`PERL_VERSION=$PERL_VERSION $PERL -e 'print "$]"; if ($] >= $ENV{PERL_VERSION}) { exit(0); } else { exit(1); }' 2>&5`
_perl_res=$?
AC_MSG_RESULT([$_perl_version])

if test "$_perl_res" != 0; then
    AC_MSG_ERROR([Perl $PERL_VERSION or higher is required.])
fi

AC_MSG_CHECKING([for full perl installation])
_perl_archlib=`$PERL -e 'use Config; if ( -d $Config{archlib} ) { exit(0); } else { exit(1); }' 2>&5`
_perl_res=$?
if test "$_perl_res" != 0; then
    AC_MSG_RESULT([no])
    AC_MSG_ERROR([Cannot find Config.pm or \$Config{archlib}.  A full perl installation is required.])
else
    AC_MSG_RESULT([yes])
fi

if test -z "$COMPILE_ENVIRONMENT"; then
    NSINSTALL_BIN='$(PYTHON) $(topsrcdir)/config/nsinstall.py'
fi
AC_SUBST(NSINSTALL_BIN)

MOZ_PATH_PROG(DOXYGEN, doxygen, :)
MOZ_PATH_PROG(AUTOCONF, autoconf, :)
MOZ_PATH_PROGS(UNZIP, unzip)
if test -z "$UNZIP" -o "$UNZIP" = ":"; then
    AC_MSG_ERROR([unzip not found in \$PATH])
fi
MOZ_PATH_PROGS(ZIP, zip)
if test -z "$ZIP" -o "$ZIP" = ":"; then
    AC_MSG_ERROR([zip not found in \$PATH])
fi
MOZ_PATH_PROG(XARGS, xargs)
if test -z "$XARGS" -o "$XARGS" = ":"; then
    AC_MSG_ERROR([xargs not found in \$PATH .])
fi

MOZ_PATH_PROG(RPMBUILD, rpmbuild, :)
AC_SUBST(RPMBUILD)

MOZ_PATH_PROG(GENISOIMAGE, genisoimage, :)
MOZ_PATH_PROG(DSYMUTIL, dsymutil, llvm-dsymutil :)

if test "$COMPILE_ENVIRONMENT"; then

dnl ========================================================
dnl = Mac OS X toolchain support
dnl ========================================================

dnl The universal machinery sets UNIVERSAL_BINARY to inform packager.mk
dnl that a universal binary is being produced and MOZ_CAN_RUN_PROGRAMS
dnl when we can run target binaries.
AC_SUBST(UNIVERSAL_BINARY)
AC_SUBST(MOZ_CAN_RUN_PROGRAMS)

MOZ_ARG_WITH_STRING(unify-dist,
[  --with-unify-dist=dir   Location of the dist directory to unify with at packaging time (Mac OS X universal build only)],
    UNIFY_DIST=$withval)
if test -n "$UNIVERSAL_BINARY"; then
    if test -z "$UNIFY_DIST"; then
        AC_MSG_ERROR([You need to provide the --with-unify-dist=dir argument when performing a universal build])
    fi
    case "$UNIFY_DIST" in
    /*)
        ;;
    *)
        UNIFY_DIST="${MOZ_BUILD_ROOT}/${UNIFY_DIST}"
        ;;
    esac
fi
AC_SUBST(UNIFY_DIST)

dnl ========================================================
dnl = Mac OS X SDK support
dnl ========================================================
MACOS_SDK_DIR=
MOZ_ARG_WITH_STRING(macos-sdk,
[  --with-macos-sdk=dir    Location of platform SDK to use (Mac OS X only)],
    MACOS_SDK_DIR=$withval)

MACOS_PRIVATE_FRAMEWORKS_DIR_DEFAULTED=
MOZ_ARG_WITH_STRING(macos-private-frameworks,
[  --with-macos-private-frameworks=dir    Location of private frameworks to use (Mac OS X only)],
    MACOS_PRIVATE_FRAMEWORKS_DIR=$withval,
    MACOS_PRIVATE_FRAMEWORKS_DIR=/System/Library/PrivateFrameworks
    MACOS_PRIVATE_FRAMEWORKS_DEFAULTED=1)

if test -z "${MACOS_PRIVATE_FRAMEWORKS_DEFAULTED}"; then
  if test -z "$CROSS_COMPILE"; then
    AC_MSG_WARN([You should only be using --with-macos-private-frameworks when cross-compiling.])
  fi
  if test ! -d "$MACOS_PRIVATE_FRAMEWORKS_DIR"; then
    AC_MSG_ERROR([PrivateFrameworks directory not found.])
  fi
fi

dnl MACOS_SDK_DIR will be set to the SDK location whenever one is in use.
AC_SUBST(MACOS_SDK_DIR)
AC_SUBST(MACOS_PRIVATE_FRAMEWORKS_DIR)

if test "$MACOS_SDK_DIR"; then
  dnl Sync this section with the ones in NSPR and NSS.
  dnl Changes to the cross environment here need to be accounted for in
  dnl the libIDL checks (below) and xpidl build.

  if test ! -d "$MACOS_SDK_DIR"; then
    AC_MSG_ERROR([SDK not found.  When using --with-macos-sdk, you must
specify a valid SDK.  SDKs are installed when the optional cross-development
tools are selected during the Xcode/Developer Tools installation.])
  fi

  CFLAGS="$CFLAGS -isysroot ${MACOS_SDK_DIR}"
  CXXFLAGS="$CXXFLAGS -isysroot ${MACOS_SDK_DIR}"

  dnl CPP/CXXCPP needs to be set for MOZ_CHECK_HEADER.
  CPP="$CPP -isysroot ${MACOS_SDK_DIR}"
  CXXCPP="$CXXCPP -isysroot ${MACOS_SDK_DIR}"

  AC_LANG_SAVE
  AC_MSG_CHECKING([for valid compiler/Mac OS X SDK combination])
  AC_LANG_CPLUSPLUS
  AC_TRY_COMPILE([#include <new>],[],
   result=yes,
   result=no)
  AC_LANG_RESTORE
  AC_MSG_RESULT($result)

  if test "$result" = "no" ; then
    AC_MSG_ERROR([The selected compiler and Mac OS X SDK are incompatible.])
  fi
fi

fi # COMPILE_ENVIRONMENT

if test -n "$MAKE"; then
  if test `echo $MAKE | grep -c make.py` != 1; then
     NOT_PYMAKE=$MAKE
  fi
fi

case "$host_os" in
mingw*)
    MOZ_PATH_PROGS(GMAKE, $GMAKE $NOT_PYMAKE make gmake, :)
    ;;
*)
    MOZ_PATH_PROGS(GMAKE, $GMAKE $NOT_PYMAKE gmake make, :)
    ;;
esac
if test "$GMAKE" = ":"; then
   AC_MSG_ERROR([GNU make not found])
fi
AC_SUBST(GMAKE)

if test -z "$MAKE"; then
  MAKE=$GMAKE
fi

if test "$COMPILE_ENVIRONMENT"; then

AC_PATH_XTRA

XCFLAGS="$X_CFLAGS"

fi # COMPILE_ENVIRONMENT

dnl ========================================================
dnl set the defaults first
dnl ========================================================
AS_BIN=$AS
AR_LIST='$(AR) t'
AR_EXTRACT='$(AR) x'
AR_DELETE='$(AR) d'
AS='$(CC)'
AS_DASH_C_FLAG='-c'
DLL_PREFIX=lib
LIB_PREFIX=lib
DLL_SUFFIX=.so
OBJ_SUFFIX=o
LIB_SUFFIX=a
ASM_SUFFIX=s
IMPORT_LIB_SUFFIX=
TARGET_MD_ARCH=unix
DIRENT_INO=d_ino
MOZ_USER_DIR=".mozilla"

MOZ_FIX_LINK_PATHS='-Wl,-rpath-link,$(LIBXUL_DIST)/bin -Wl,-rpath-link,$(prefix)/lib'

MOZ_FS_LAYOUT=unix

USE_DEPENDENT_LIBS=1

_PLATFORM_DEFAULT_TOOLKIT=cairo-gtk3

if test -n "$CROSS_COMPILE"; then
    OS_TARGET="${target_os}"
    OS_ARCH=`echo $target_os | sed -e 's|/|_|g'`
    OS_RELEASE=
    case "${target_os}" in
        linux*)       OS_ARCH=Linux OS_TARGET=Linux ;;
        kfreebsd*-gnu) OS_ARCH=GNU_kFreeBSD OS_TARGET=GNU/kFreeBSD ;;
        gnu*)         OS_ARCH=GNU ;;
        solaris*)     OS_ARCH=SunOS OS_RELEASE=5 ;;
        mingw*)       OS_ARCH=WINNT OS_TARGET=WINNT ;;
        darwin*)      OS_ARCH=Darwin OS_TARGET=Darwin ;;
        dragonfly*)   OS_ARCH=DragonFly OS_TARGET=DragonFly ;;
        freebsd*)     OS_ARCH=FreeBSD OS_TARGET=FreeBSD ;;
        netbsd*)      OS_ARCH=NetBSD OS_TARGET=NetBSD ;;
        openbsd*)     OS_ARCH=OpenBSD OS_TARGET=OpenBSD ;;
    esac
    case "${target}" in
        *-android*|*-linuxandroid*) OS_ARCH=Linux OS_TARGET=Android ;;
    esac
else
    OS_TARGET=`uname -s`
    OS_ARCH=`uname -s | sed -e 's|/|_|g'`
    OS_RELEASE=`uname -r`
fi

# Before this used `uname -m` when not cross compiling
# but that breaks when you have a 64 bit kernel with a 32 bit userland.
OS_TEST="${target_cpu}"

HOST_OS_ARCH=`echo $host_os | sed -e 's|/|_|g'`

#######################################################################
# Master "Core Components" macros for getting the OS target           #
#######################################################################

#
# If OS_TARGET is not specified, it defaults to $(OS_ARCH), i.e., no
# cross-compilation.
#

#
# Define and override various archtecture-specific variables, including
# HOST_OS_ARCH
# OS_ARCH
# OS_TEST
# OS_TARGET
# OS_RELEASE
# OS_MINOR_RELEASE
#

case "$HOST_OS_ARCH" in
mingw*)
    HOST_OS_ARCH=WINNT
    ;;
darwin*)
    HOST_OS_ARCH=Darwin
    ;;
linux*)
    HOST_OS_ARCH=Linux
    ;;
kfreebsd*-gnu)
    HOST_OS_ARCH=GNU_kFreeBSD
    ;;
gnu*)
    HOST_OS_ARCH=GNU
    ;;
dragonfly*)
    HOST_OS_ARCH=DragonFly
    ;;
freebsd*)
    HOST_OS_ARCH=FreeBSD
    ;;
netbsd*)
    HOST_OS_ARCH=NetBSD
    ;;
openbsd*)
    HOST_OS_ARCH=OpenBSD
    ;;
solaris*)
    HOST_OS_ARCH=SunOS
    SOLARIS_SUNPRO_CC=
    SOLARIS_SUNPRO_CXX=
    if test -z "$GNU_CC"; then
        if test "`$CC -V 2>&1 | egrep -c 'Sun.*C '`" != "0"; then
            SOLARIS_SUNPRO_CC=1
       fi
    fi

    if test -z "$GNU_CXX"; then
       if test "`$CXX -V 2>&1 | egrep -c 'Sun.*C\+\+ '`" != "0"; then
           SOLARIS_SUNPRO_CXX=1
       fi
    fi
    AC_SUBST(SOLARIS_SUNPRO_CC)
    AC_SUBST(SOLARIS_SUNPRO_CXX)
    ;;
esac

case "$OS_ARCH" in
WINNT)
    if test -z "$CROSS_COMPILE" ; then
        OS_TEST=`uname -p`
    fi
    ;;
Windows_NT)
#
# If uname -s returns "Windows_NT", we assume that we are using
# the uname.exe in MKS toolkit.
#
# The -r option of MKS uname only returns the major version number.
# So we need to use its -v option to get the minor version number.
# Moreover, it doesn't have the -p option, so we need to use uname -m.
#
    OS_ARCH=WINNT
    OS_TARGET=WINNT
    OS_MINOR_RELEASE=`uname -v`
    if test "$OS_MINOR_RELEASE" = "00"; then
        OS_MINOR_RELEASE=0
    fi
    OS_RELEASE="${OS_RELEASE}.${OS_MINOR_RELEASE}"
    ;;
MINGW*_NT*)
#
# If uname -s returns MINGW32_NT-5.1, we assume that we are using
# the uname.exe in the MSYS tools.
#
    OS_RELEASE=`expr $OS_ARCH : '.*NT-\(.*\)'`
    OS_ARCH=WINNT
    OS_TARGET=WINNT
    ;;
AIX)
    OS_RELEASE=`uname -v`.`uname -r`
    OS_TEST=${target_cpu}
    ;;
Darwin)
    case "${target_cpu}" in
    powerpc*)
        OS_TEST=ppc
        ;;
    i*86*)
        OS_TEST=i386
        ;;
    x86_64)
        OS_TEST=x86_64
        ;;
    *)
        if test -z "$CROSS_COMPILE" ; then
            OS_TEST=`uname -p`
        fi
        ;;
    esac
    ;;
esac

# Only set CPU_ARCH if we recognize the value of OS_TEST

case "$OS_TEST" in
*86 | i86pc)
    CPU_ARCH=x86
    ;;

powerpc64 | ppc64 | powerpc64le | ppc64le)
    CPU_ARCH=ppc64
    ;;

powerpc | ppc | rs6000)
    CPU_ARCH=ppc
    ;;

Alpha | alpha | ALPHA)
    CPU_ARCH=Alpha
    ;;

s390)
    CPU_ARCH=s390
    ;;

s390x)
    CPU_ARCH=s390x
    ;;

hppa* | parisc)
    CPU_ARCH=hppa
    ;;

sun4u | sparc*)
    CPU_ARCH=sparc
    ;;

x86_64 | ia64)
    CPU_ARCH="$OS_TEST"
    ;;

arm*)
    CPU_ARCH=arm
    ;;

mips|mipsel)
    CPU_ARCH="mips"
    ;;

aarch64*)
    CPU_ARCH=aarch64
    ;;
esac

if test -z "$OS_TARGET"; then
    OS_TARGET=$OS_ARCH
fi
OS_CONFIG="${OS_TARGET}${OS_RELEASE}"

dnl Set INTEL_ARCHITECTURE if we're compiling for x86-32 or x86-64.
dnl ===============================================================
INTEL_ARCHITECTURE=
case "$OS_TEST" in
    x86_64|i?86)
      INTEL_ARCHITECTURE=1
esac

dnl Configure platform-specific CPU architecture compiler options.
dnl ==============================================================
MOZ_ARCH_OPTS

dnl =================================================================
dnl Set up and test static assertion macros used to avoid AC_TRY_RUN,
dnl which is bad when cross compiling.
dnl =================================================================
if test "$COMPILE_ENVIRONMENT"; then
configure_static_assert_macros='
#define CONFIGURE_STATIC_ASSERT(condition) CONFIGURE_STATIC_ASSERT_IMPL(condition, __LINE__)
#define CONFIGURE_STATIC_ASSERT_IMPL(condition, line) CONFIGURE_STATIC_ASSERT_IMPL2(condition, line)
#define CONFIGURE_STATIC_ASSERT_IMPL2(condition, line) typedef int static_assert_line_##line[(condition) ? 1 : -1]
'

dnl test that the macros actually work:
AC_MSG_CHECKING(that static assertion macros used in autoconf tests work)
AC_CACHE_VAL(ac_cv_static_assertion_macros_work,
 [AC_LANG_SAVE
  AC_LANG_C
  ac_cv_static_assertion_macros_work="yes"
  AC_TRY_COMPILE([$configure_static_assert_macros],
                 [CONFIGURE_STATIC_ASSERT(1)],
                 ,
                 ac_cv_static_assertion_macros_work="no")
  AC_TRY_COMPILE([$configure_static_assert_macros],
                 [CONFIGURE_STATIC_ASSERT(0)],
                 ac_cv_static_assertion_macros_work="no",
                 )
  AC_LANG_CPLUSPLUS
  AC_TRY_COMPILE([$configure_static_assert_macros],
                 [CONFIGURE_STATIC_ASSERT(1)],
                 ,
                 ac_cv_static_assertion_macros_work="no")
  AC_TRY_COMPILE([$configure_static_assert_macros],
                 [CONFIGURE_STATIC_ASSERT(0)],
                 ac_cv_static_assertion_macros_work="no",
                 )
  AC_LANG_RESTORE
 ])
AC_MSG_RESULT("$ac_cv_static_assertion_macros_work")
if test "$ac_cv_static_assertion_macros_work" = "no"; then
    AC_MSG_ERROR([Compiler cannot compile macros used in autoconf tests.])
fi
fi # COMPILE_ENVIRONMENT

dnl ========================================================
dnl Android libstdc++, placed here so it can use MOZ_ARCH
dnl computed above.
dnl ========================================================

MOZ_ANDROID_STLPORT

dnl ========================================================
dnl Suppress Clang Argument Warnings
dnl ========================================================
if test -n "${CLANG_CC}${CLANG_CL}"; then
    _WARNINGS_CFLAGS="-Qunused-arguments ${_WARNINGS_CFLAGS}"
    CPPFLAGS="-Qunused-arguments ${CPPFLAGS}"
fi
if test -n "${CLANG_CXX}${CLANG_CL}"; then
    _WARNINGS_CXXFLAGS="-Qunused-arguments ${_WARNINGS_CXXFLAGS}"
fi

dnl ========================================================
dnl = Use Address Sanitizer
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(address-sanitizer,
[  --enable-address-sanitizer       Enable Address Sanitizer (default=no)],
    MOZ_ASAN=1,
    MOZ_ASAN= )
if test -n "$MOZ_ASAN"; then
    MOZ_LLVM_HACKS=1
    if test -n "$CLANG_CL"; then
        # Look for clang_rt.asan_dynamic-i386.dll
        MOZ_CLANG_RT_ASAN_LIB=clang_rt.asan_dynamic-i386.dll
        # We use MOZ_PATH_PROG in order to get a Windows style path.
        MOZ_PATH_PROG(MOZ_CLANG_RT_ASAN_LIB_PATH, $MOZ_CLANG_RT_ASAN_LIB)
        if test -z "$MOZ_CLANG_RT_ASAN_LIB_PATH"; then
            AC_MSG_ERROR([Couldn't find $MOZ_CLANG_RT_ASAN_LIB.  It should be available in the same location as clang-cl.])
        fi
        AC_SUBST(MOZ_CLANG_RT_ASAN_LIB_PATH)
    fi
    AC_DEFINE(MOZ_ASAN)
    MOZ_PATH_PROG(LLVM_SYMBOLIZER, llvm-symbolizer)
fi
AC_SUBST(MOZ_ASAN)

dnl ========================================================
dnl = Use Memory Sanitizer
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(memory-sanitizer,
[  --enable-memory-sanitizer       Enable Memory Sanitizer (default=no)],
    MOZ_MSAN=1,
    MOZ_MSAN= )
if test -n "$MOZ_MSAN"; then
    MOZ_LLVM_HACKS=1
    AC_DEFINE(MOZ_MSAN)
    MOZ_PATH_PROG(LLVM_SYMBOLIZER, llvm-symbolizer)
fi
AC_SUBST(MOZ_MSAN)

dnl ========================================================
dnl = Use Thread Sanitizer
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(thread-sanitizer,
[  --enable-thread-sanitizer       Enable Thread Sanitizer (default=no)],
   MOZ_TSAN=1,
   MOZ_TSAN= )
if test -n "$MOZ_TSAN"; then
    MOZ_LLVM_HACKS=1
    AC_DEFINE(MOZ_TSAN)
    MOZ_PATH_PROG(LLVM_SYMBOLIZER, llvm-symbolizer)
fi
AC_SUBST(MOZ_TSAN)

# The LLVM symbolizer is used by all sanitizers
AC_SUBST(LLVM_SYMBOLIZER)

dnl ========================================================
dnl = Enable hacks required for LLVM instrumentations
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(llvm-hacks,
[  --enable-llvm-hacks       Enable workarounds required for several LLVM instrumentations (default=no)],
    MOZ_LLVM_HACKS=1,
    MOZ_LLVM_HACKS= )
if test -n "$MOZ_LLVM_HACKS"; then
    MOZ_NO_WLZDEFS=1
    MOZ_CFLAGS_NSS=1
fi
AC_SUBST(MOZ_NO_WLZDEFS)
AC_SUBST(MOZ_CFLAGS_NSS)

dnl ========================================================
dnl = Enable treating compiler warnings as errors
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(warnings-as-errors,
[  --enable-warnings-as-errors
                          Enable treating warnings as errors],
    MOZ_ENABLE_WARNINGS_AS_ERRORS=1,
    MOZ_ENABLE_WARNINGS_AS_ERRORS=)

dnl ========================================================
dnl GNU specific defaults
dnl ========================================================
if test "$GNU_CC"; then
    MMX_FLAGS="-mmmx"
    SSE_FLAGS="-msse"
    SSE2_FLAGS="-msse2"
    # Per bug 719659 comment 2, some of the headers on ancient build machines
    # may require gnu89 inline semantics.  But otherwise, we use C99.
    # But on OS X we just use C99 plus GNU extensions, in order to fix
    # bug 917526.
    CFLAGS="$CFLAGS -std=gnu99"
    if test "${OS_ARCH}" != Darwin; then
        CFLAGS="$CFLAGS -fgnu89-inline"
    fi
    # FIXME: Let us build with strict aliasing. bug 414641.
    CFLAGS="$CFLAGS -fno-strict-aliasing"
    MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -Wl,-h,$(DSO_SONAME) -o $@'
    MKCSHLIB='$(CC) $(CFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -Wl,-h,$(DSO_SONAME) -o $@'
    WARNINGS_AS_ERRORS='-Werror'
    DSO_CFLAGS=''
    DSO_PIC_CFLAGS='-fPIC'
    ASFLAGS="$ASFLAGS -fPIC"
    AC_MSG_CHECKING([for --noexecstack option to as])
    _SAVE_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS -Wa,--noexecstack"
    AC_TRY_COMPILE(,,AC_MSG_RESULT([yes])
                     [ASFLAGS="$ASFLAGS -Wa,--noexecstack"],
                     AC_MSG_RESULT([no]))
    CFLAGS=$_SAVE_CFLAGS
    AC_MSG_CHECKING([for -z noexecstack option to ld])
    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS -Wl,-z,noexecstack"
    AC_TRY_LINK(,,AC_MSG_RESULT([yes]),
                  AC_MSG_RESULT([no])
                  LDFLAGS=$_SAVE_LDFLAGS)

    AC_MSG_CHECKING([for -z text option to ld])
    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS -Wl,-z,text"
    AC_TRY_LINK(,,AC_MSG_RESULT([yes])
                  [NSPR_LDFLAGS="$NSPR_LDFLAGS -Wl,-z,text"],
                  AC_MSG_RESULT([no])
                  LDFLAGS=$_SAVE_LDFLAGS)

    AC_MSG_CHECKING([for --build-id option to ld])
    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS -Wl,--build-id"
    AC_TRY_LINK(,,AC_MSG_RESULT([yes])
                  [NSPR_LDFLAGS="$NSPR_LDFLAGS -Wl,--build-id"],
                  AC_MSG_RESULT([no])
                  LDFLAGS=$_SAVE_LDFLAGS)

    AC_MSG_CHECKING([for --ignore-unresolved-symbol option to ld])
    HAVE_LINKER_SUPPORT_IGNORE_UNRESOLVED=
    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS -Wl,--ignore-unresolved-symbol,environ"
    AC_TRY_LINK(,,AC_MSG_RESULT([yes])
                  [HAVE_LINKER_SUPPORT_IGNORE_UNRESOLVED=1],
                  AC_MSG_RESULT([no]))
    LDFLAGS=$_SAVE_LDFLAGS

    # Check for -mssse3 on $CC
    AC_MSG_CHECKING([if toolchain supports -mssse3 option])
    HAVE_TOOLCHAIN_SUPPORT_MSSSE3=
    _SAVE_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS -mssse3"
    AC_TRY_COMPILE([asm ("pmaddubsw %xmm2,%xmm3");],,AC_MSG_RESULT([yes])
                     [HAVE_TOOLCHAIN_SUPPORT_MSSSE3=1],
                     AC_MSG_RESULT([no]))
    CFLAGS=$_SAVE_CFLAGS

    # Check for -msse4.1 on $CC
    AC_MSG_CHECKING([if toolchain supports -msse4.1 option])
    HAVE_TOOLCHAIN_SUPPORT_MSSE4_1=
    _SAVE_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS -msse4.1"
    AC_TRY_COMPILE([asm ("pmulld %xmm6,%xmm0");],,AC_MSG_RESULT([yes])
                     [HAVE_TOOLCHAIN_SUPPORT_MSSE4_1=1],
                     AC_MSG_RESULT([no]))
    CFLAGS=$_SAVE_CFLAGS

    case "${CPU_ARCH}" in
    x86 | x86_64)
      AC_MSG_CHECKING(for x86 AVX2 asm support in compiler)
      AC_TRY_COMPILE([],
                     [asm volatile ("vpermq      \$0xd8,%ymm0,%ymm0 \n");],
                     result="yes", result="no")
      AC_MSG_RESULT("$result")
      if test "$result" = "yes"; then
          HAVE_X86_AVX2=1
      fi
    esac

    DSO_LDOPTS='-shared'
    if test "$GCC_USE_GNU_LD"; then
        # Some tools like ASan use a runtime library that is only
        # linked against executables, so we must allow undefined
        # symbols for shared objects in some cases.
        if test -z "$MOZ_NO_WLZDEFS"; then
            # Don't allow undefined symbols in libraries
            DSO_LDOPTS="$DSO_LDOPTS -Wl,-z,defs"

            # BSDs need `environ' exposed for posix_spawn (bug 753046)
            case "$OS_TARGET" in
            DragonFly|FreeBSD|NetBSD|OpenBSD)
                if test -n "$HAVE_LINKER_SUPPORT_IGNORE_UNRESOLVED"; then
                    DSO_LDOPTS="$DSO_LDOPTS -Wl,--ignore-unresolved-symbol,environ"
                else
                    DSO_LDOPTS="$DSO_LDOPTS -Wl,--warn-unresolved-symbols"
                fi
                ;;
            esac
        fi
    fi

    # Turn on gcc/clang warnings:
    # https://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/Warning-Options.html
    #
    # -Wall - turn on a lot of warnings
    # -Wchar-subscripts - catches array index using signed char
    # -Wcomment - catches nested comments
    # -Wempty-body - catches bugs, e.g. "if (c); foo();", few false positives
    # -Wendif-labels - catches `#else FOO` and `#endif FOO` not in comment
    # -Wenum-compare - catches comparison of different enum types
    # -Wignored-qualifiers - catches returns types with qualifiers like const
    # -Wint-to-pointer-cast - catches cast to pointer from integer of different size
    # -Wmultichar - catches multicharacter integer constants like 'THIS'
    # -Wnon-literal-null-conversion - catches expressions used as a null pointer constant
    # -Wnonnull - catches NULL used with functions arguments marked as non-null
    # -Wpointer-arith - catches pointer arithmetic using NULL or sizeof(void)
    # -Wpointer-sign - catches mixing pointers to signed and unsigned types
    # -Wpointer-to-int-cast - catches casts from pointer to different sized int
    # -Wreturn-type - catches missing returns, zero false positives
    # -Wsequence-point - catches undefined order behavior like `a = a++`
    # -Wsign-compare - catches comparison of signed and unsigned types
    # -Wtrigraphs - catches unlikely use of trigraphs
    # -Wtype-limits - catches overflow bugs, few false positives
    # -Wunknown-pragmas - catches unexpected #pragma directives
    #
    _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Wall"
    _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Wempty-body"
    _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Wpointer-to-int-cast"
    _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Wsign-compare"
    _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Wtype-limits"

    # Treat some warnings as errors if --enable-warnings-as-errors:
    if test "$MOZ_ENABLE_WARNINGS_AS_ERRORS"; then
        _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Werror=char-subscripts"
        _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Werror=comment"
        _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Werror=endif-labels"
        _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Werror=enum-compare"
        _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Werror=ignored-qualifiers"
        _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Werror=int-to-pointer-cast"
        _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Werror=multichar"
        _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Werror=nonnull"
        _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Werror=pointer-arith"
        _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Werror=pointer-sign"
        _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Werror=return-type"
        _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Werror=sequence-point"
        _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Werror=trigraphs"
        _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Werror=uninitialized"
        _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Werror=unknown-pragmas"

        MOZ_C_SUPPORTS_WARNING(-Werror=, non-literal-null-conversion, ac_c_has_werror_non_literal_null_conversion)
        MOZ_C_SUPPORTS_WARNING(-Werror=, sometimes-uninitialized, ac_c_has_sometimes_uninitialized)
    fi

    # Turn off the following warnings that -Wall turns on:
    # -Wno-unused - lots of violations in third-party code
    # -Wno-unused-local-typedef - catches unused typedefs, which are commonly used in assertion macros
    #
    _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Wno-unused"

    MOZ_CXX_SUPPORTS_WARNING(-Wno-, unused-local-typedef, ac_cxx_has_wno_unused_local_typedef)

    if test -z "$INTEL_CC" -a -z "$CLANG_CC"; then
       # Don't use -Wcast-align with ICC or clang
       case "$CPU_ARCH" in
           # And don't use it on hppa, ia64, sparc, arm, since it's noisy there
           hppa | ia64 | sparc | arm)
           ;;
           *)
        _WARNINGS_CFLAGS="${_WARNINGS_CFLAGS} -Wcast-align"
           ;;
       esac
    fi

    _DEFINES_CFLAGS='-include $(DEPTH)/mozilla-config.h -DMOZILLA_CLIENT'
    _USE_CPP_INCLUDE_FLAG=1
    ASFLAGS="$ASFLAGS $_DEFINES_CFLAGS"

elif test "$SOLARIS_SUNPRO_CC"; then
    DSO_CFLAGS=''
    if test "$CPU_ARCH" = "sparc"; then
        # for Sun Studio on Solaris/SPARC
        DSO_PIC_CFLAGS='-xcode=pic32'
    else
        DSO_PIC_CFLAGS='-KPIC'
    fi
    _DEFINES_CFLAGS='$(ACDEFINES) -D_MOZILLA_CONFIG_H_ -DMOZILLA_CLIENT'
else
    MKSHLIB='$(LD) $(DSO_LDOPTS) -h $(DSO_SONAME) -o $@'
    MKCSHLIB='$(LD) $(DSO_LDOPTS) -h $(DSO_SONAME) -o $@'

    DSO_LDOPTS='-shared'
    if test "$GNU_LD"; then
        # Don't allow undefined symbols in libraries
        DSO_LDOPTS="$DSO_LDOPTS -z defs"
    fi

    DSO_CFLAGS=''
    DSO_PIC_CFLAGS='-KPIC'
    _DEFINES_CFLAGS='$(ACDEFINES) -D_MOZILLA_CONFIG_H_ -DMOZILLA_CLIENT'
fi

if test "$GNU_CXX"; then
    # FIXME: Let us build with strict aliasing. bug 414641.
    CXXFLAGS="$CXXFLAGS -fno-exceptions -fno-strict-aliasing"

    # Turn on gcc/clang warnings:
    # https://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/Warning-Options.html
    #
    # -Wall - turn on a lot of warnings
    # -Wempty-body - catches bugs, e.g. "if (c); foo();", few false positives
    # -Wendif-labels - catches `#else FOO` and `#endif FOO` not in comment
    # -Wint-to-pointer-cast - catches cast to pointer from integer of different size
    # -Wmissing-braces - catches aggregate initializers missing nested braces
    # -Wnon-literal-null-conversion - catches expressions used as a null pointer constant
    # -Woverloaded-virtual - function declaration hides virtual function from base class
    # -Wparentheses - catches `if (a=b)` and operator precedence bugs
    # -Wpointer-arith - catches pointer arithmetic using NULL or sizeof(void)
    # -Wrange-loop-analysis - catches copies during range-based for loops.
    # -Wreturn-type - catches missing returns, zero false positives
    # -Wsequence-point - catches undefined order behavior like `a = a++`
    # -Wsign-compare - catches comparison of signed and unsigned types
    # -Wswitch - catches switches without all enum cases or default case
    # -Wtrigraphs - catches unlikely use of trigraphs
    # -Wtype-limits - catches overflow bugs, few false positives
    # -Wunused-label - catches unused goto labels
    # -Wwrite-strings - catches non-const char* pointers to string literals
    #
    _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Wall"
    _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Wempty-body"
    _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Woverloaded-virtual"
    _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Wsign-compare"
    _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Wwrite-strings"

    # Treat some warnings as errors if --enable-warnings-as-errors:
    if test "$MOZ_ENABLE_WARNINGS_AS_ERRORS"; then
        _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Werror=endif-labels"
        _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Werror=int-to-pointer-cast"
        _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Werror=missing-braces"
        _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Werror=parentheses"
        _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Werror=pointer-arith"
        _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Werror=return-type"
        _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Werror=sequence-point"
        _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Werror=switch"
        _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Werror=trigraphs"
        _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Werror=type-limits"
        _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Werror=uninitialized"
        _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Werror=unused-label"

        MOZ_CXX_SUPPORTS_WARNING(-Werror=, non-literal-null-conversion, ac_cxx_has_werror_non_literal_null_conversion)
        MOZ_CXX_SUPPORTS_WARNING(-Werror=, range-loop-analysis, ac_cxx_has_range_loop_analysis)
        MOZ_CXX_SUPPORTS_WARNING(-Werror=, sometimes-uninitialized, ac_cxx_has_sometimes_uninitialized)
    fi

    # Turn off the following warnings that -Wall turns on:
    # -Wno-invalid-offsetof - we use offsetof on non-POD types frequently
    # -Wno-inline-new-delete - we inline 'new' and 'delete' in mozalloc
    # -Wno-unused-local-typedef - catches unused typedefs, which are commonly used in assertion macros
    #   for performance reasons, and because GCC and clang accept it (though
    #   clang warns about it).
    #
    _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Wno-invalid-offsetof"

    MOZ_CXX_SUPPORTS_WARNING(-Wno-, inline-new-delete, ac_cxx_has_wno_inline_new_delete)
    MOZ_CXX_SUPPORTS_WARNING(-Wno-, unused-local-typedef, ac_cxx_has_wno_unused_local_typedef)

    if test -z "$INTEL_CXX" -a -z "$CLANG_CXX"; then
       # Don't use -Wcast-align with ICC or clang
       case "$CPU_ARCH" in
           # And don't use it on hppa, ia64, sparc, arm, since it's noisy there
           hppa | ia64 | sparc | arm)
           ;;
           *)
        _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Wcast-align"
           ;;
       esac
    fi

    _DEFINES_CXXFLAGS='-DMOZILLA_CLIENT -include $(DEPTH)/mozilla-config.h'
    _USE_CPP_INCLUDE_FLAG=1

    # Recent clang and gcc support C++11 deleted functions without warnings if
    # compiling with -std=c++0x or -std=gnu++0x (or c++11 or gnu++11 in very new
    # versions).  We can't use -std=c++0x yet, so gcc's support must remain
    # unused.  But clang's warning can be disabled, so when compiling with clang
    # we use it to opt out of the warning, enabling (macro-encapsulated) use of
    # deleted function syntax.
    if test "$CLANG_CXX"; then
        _WARNINGS_CXXFLAGS="${_WARNINGS_CXXFLAGS} -Wno-c++0x-extensions"
        MOZ_CXX_SUPPORTS_WARNING(-Wno-, extended-offsetof, ac_cxx_has_wno_extended_offsetof)
    fi

else
    _DEFINES_CXXFLAGS='-DMOZILLA_CLIENT -D_MOZILLA_CONFIG_H_ $(ACDEFINES)'
fi

dnl ========================================================
dnl Checking for 64-bit OS
dnl ========================================================
if test "$COMPILE_ENVIRONMENT"; then
AC_LANG_SAVE
AC_LANG_C
AC_MSG_CHECKING(for 64-bit OS)
AC_TRY_COMPILE([$configure_static_assert_macros],
               [CONFIGURE_STATIC_ASSERT(sizeof(void*) == 8)],
               result="yes", result="no")
AC_MSG_RESULT("$result")
if test "$result" = "yes"; then
    AC_DEFINE(HAVE_64BIT_BUILD)
    HAVE_64BIT_BUILD=1
fi
AC_SUBST(HAVE_64BIT_BUILD)
AC_LANG_RESTORE
fi # COMPILE_ENVIRONMENT

dnl ========================================================
dnl = Use profiling compile flags
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(profiling,
[  --enable-profiling      Set compile flags necessary for using sampling profilers (e.g. shark, perf)],
    MOZ_PROFILING=1,
    MOZ_PROFILING= )

dnl ========================================================
dnl = Turn on systrace for android/b2g.
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(systrace,
[  --enable-systrace       Set compile flags necessary for using sampling profilers (e.g. shark, perf)],
    MOZ_USE_SYSTRACE=1,
    MOZ_USE_SYSTRACE= )
if test -n "$MOZ_USE_SYSTRACE"; then
    AC_DEFINE(MOZ_USE_SYSTRACE)
fi

# For profiling builds keep the symbol information
if test "$MOZ_PROFILING" -a -z "$STRIP_FLAGS"; then
    case "$OS_TARGET" in
    Linux|DragonFly|FreeBSD|NetBSD|OpenBSD)
        STRIP_FLAGS="--strip-debug"
        ;;
    esac
fi

dnl ========================================================
dnl = Use Valgrind
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(valgrind,
[  --enable-valgrind       Enable Valgrind integration hooks (default=no)],
    MOZ_VALGRIND=1,
    MOZ_VALGRIND= )
if test -n "$MOZ_VALGRIND"; then
    MOZ_CHECK_HEADER([valgrind/valgrind.h], [],
        AC_MSG_ERROR(
            [--enable-valgrind specified but Valgrind is not installed]))
    AC_DEFINE(MOZ_VALGRIND)
fi
AC_SUBST(MOZ_VALGRIND)

dnl ========================================================
dnl jprof
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(jprof,
[  --enable-jprof          Enable jprof profiling tool (needs mozilla/tools/jprof). Implies --enable-profiling.],
    MOZ_JPROF=1,
    MOZ_JPROF= )
if test -n "$MOZ_JPROF"; then
    MOZ_PROFILING=1
    AC_DEFINE(MOZ_JPROF)
fi

dnl ========================================================
dnl SPS Profiler
dnl ========================================================
MOZ_ENABLE_PROFILER_SPS=1

case "${OS_TARGET}" in
Android)
    case "${CPU_ARCH}" in
    x86 | arm) ;;
    *)
        MOZ_ENABLE_PROFILER_SPS=
    esac
    ;;
Linux)
    case "${CPU_ARCH}" in
    x86 | x86_64) ;;
    *)
        MOZ_ENABLE_PROFILER_SPS=
    esac
    ;;
WINNT) ;;
Darwin)
    if test -n "$MOZ_IOS"; then
        MOZ_ENABLE_PROFILER_SPS=
    fi
    ;;
*)
    MOZ_ENABLE_PROFILER_SPS=
    ;;
esac

if test -n "$MOZ_ENABLE_PROFILER_SPS"; then
    AC_DEFINE(MOZ_ENABLE_PROFILER_SPS)
fi

dnl ========================================================
dnl instruments
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(instruments,
[  --enable-instruments    Enable instruments remote profiling. Implies --enable-profiling.],
    MOZ_INSTRUMENTS=1,
    MOZ_INSTRUMENTS= )
if test -n "$MOZ_INSTRUMENTS"; then
    MOZ_PROFILING=1
    AC_DEFINE(MOZ_INSTRUMENTS)
fi

dnl ========================================================
dnl callgrind
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(callgrind,
[  --enable-callgrind      Enable callgrind profiling. Implies --enable-profiling.],
    MOZ_CALLGRIND=1,
    MOZ_CALLGRIND= )
if test -n "$MOZ_CALLGRIND"; then
    MOZ_PROFILING=1
    AC_DEFINE(MOZ_CALLGRIND)
fi

dnl ========================================================
dnl vtune
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(vtune,
[  --enable-vtune          Enable vtune profiling. Implies --enable-profiling.],
    MOZ_VTUNE=1,
    MOZ_VTUNE= )
if test -n "$MOZ_VTUNE"; then
    MOZ_PROFILING=1
    AC_DEFINE(MOZ_VTUNE)
fi

dnl ========================================================
dnl Profiling
dnl ========================================================
if test -n "$MOZ_PROFILING"; then
    AC_DEFINE(MOZ_PROFILING)
fi

dnl ========================================================
dnl System overrides of the defaults for host
dnl ========================================================
case "$host" in
*mingw*)
    if test -n "$_WIN32_MSVC"; then
        HOST_AR=lib
        HOST_AR_FLAGS='-NOLOGO -OUT:$@'
        HOST_CFLAGS="$HOST_CFLAGS -TC -nologo"
        HOST_RANLIB='echo ranlib'
    else
        HOST_CFLAGS="$HOST_CFLAGS -mwindows"
    fi
    HOST_CFLAGS="$HOST_CFLAGS -DXP_WIN32 -DXP_WIN -DWIN32 -D_WIN32 -DNO_X11 -D_CRT_SECURE_NO_WARNINGS"
    HOST_NSPR_MDCPUCFG='"md/_winnt.cfg"'
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O2}"
    HOST_BIN_SUFFIX=.exe
    case "$host" in
    *mingw*)
        PERL="/bin/sh ${_topsrcdir}/build/msys-perl-wrapper"
        ;;
    esac

    case "${host_cpu}" in
    i*86)
        if test -n "$_WIN32_MSVC"; then
            HOST_LDFLAGS="$HOST_LDFLAGS -MACHINE:X86"
        fi
        ;;
    x86_64)
        if test -n "$_WIN32_MSVC"; then
            HOST_LDFLAGS="$HOST_LDFLAGS -MACHINE:X64"
        fi
        HOST_CFLAGS="$HOST_CFLAGS -D_AMD64_"
        ;;
    esac
    ;;

*-darwin*)
    HOST_CFLAGS="$HOST_CFLAGS -DXP_UNIX -DXP_MACOSX -DNO_X11"
    HOST_NSPR_MDCPUCFG='"md/_darwin.cfg"'
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O3}"
    ;;

*-linux*|*-kfreebsd*-gnu|*-gnu*)
    HOST_CFLAGS="$HOST_CFLAGS -DXP_UNIX"
    HOST_NSPR_MDCPUCFG='"md/_linux.cfg"'
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O3}"
    ;;

*)
    HOST_CFLAGS="$HOST_CFLAGS -DXP_UNIX"
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O2}"
    ;;
esac

dnl ==============================================================
dnl Get mozilla version from central milestone file
dnl ==============================================================
MOZILLA_VERSION=`$PYTHON $srcdir/python/mozbuild/mozbuild/milestone.py --topsrcdir $srcdir`
MOZILLA_UAVERSION=`$PYTHON $srcdir/python/mozbuild/mozbuild/milestone.py --topsrcdir $srcdir --uaversion`
MOZILLA_SYMBOLVERSION=`$PYTHON $srcdir/python/mozbuild/mozbuild/milestone.py --topsrcdir $srcdir --symbolversion`
if test -z "$MOZILLA_VERSION"; then
  AC_MSG_ERROR([failed to read version info from milestone file])
fi

dnl Get version of various core apps from the version files.
FIREFOX_VERSION=`cat $_topsrcdir/browser/config/version.txt`
FIREFOX_VERSION_DISPLAY=`cat $_topsrcdir/browser/config/version_display.txt`

if test -z "$FIREFOX_VERSION"; then
    AC_MSG_ERROR([FIREFOX_VERSION is unexpectedly blank.])
fi

if test -z "$FIREFOX_VERSION_DISPLAY"; then
    AC_MSG_ERROR([FIREFOX_VERSION_DISPLAY is unexpectedly blank.])
fi

AC_DEFINE_UNQUOTED(MOZILLA_VERSION,"$MOZILLA_VERSION")
AC_DEFINE_UNQUOTED(MOZILLA_VERSION_U,$MOZILLA_VERSION)
AC_DEFINE_UNQUOTED(MOZILLA_UAVERSION,"$MOZILLA_UAVERSION")
AC_SUBST(MOZILLA_SYMBOLVERSION)

MOZ_DOING_LTO(lto_is_enabled)

dnl ========================================================
dnl System overrides of the defaults for target
dnl ========================================================

case "$target" in
*-aix*)
    AC_DEFINE(AIX)
    if test ! "$GNU_CC"; then
        if test ! "$HAVE_64BIT_BUILD"; then
            # Compiling with Visual Age C++ object model compat is the
            # default. To compile with object model ibm, add
            # AIX_OBJMODEL=ibm to .mozconfig.
            if test "$AIX_OBJMODEL" = "ibm"; then
                CXXFLAGS="$CXXFLAGS -qobjmodel=ibm"
            else
                AIX_OBJMODEL=compat
            fi
        else
            AIX_OBJMODEL=compat
        fi
        AC_SUBST(AIX_OBJMODEL)
        DSO_LDOPTS='-qmkshrobj=1'
        DSO_CFLAGS='-qflag=w:w'
        DSO_PIC_CFLAGS=
        LDFLAGS="$LDFLAGS -Wl,-brtl -blibpath:/usr/lib:/lib"
        MOZ_FIX_LINK_PATHS=
        MKSHLIB='$(CXX) $(DSO_LDOPTS) -o $@'
        MKCSHLIB='$(CC) $(DSO_LDOPTS) -o $@'
        if test "$COMPILE_ENVIRONMENT"; then
            AC_LANG_SAVE
            AC_LANG_CPLUSPLUS
            AC_MSG_CHECKING([for IBM XLC/C++ compiler version >= 9.0.0.7])
            AC_TRY_COMPILE([],
                [#if (__IBMCPP__ < 900)
                 #error "Bad compiler"
                 #endif],
                _BAD_COMPILER=,_BAD_COMPILER=1)
            if test -n "$_BAD_COMPILER"; then
                AC_MSG_RESULT([no])
                AC_MSG_ERROR([IBM XLC/C++ 9.0.0.7 or higher is required to build.])
            else
                AC_MSG_RESULT([yes])
            fi
            AC_LANG_RESTORE
            TARGET_COMPILER_ABI="ibmc"
            CC_VERSION=`lslpp -Lcq vac.C 2>/dev/null | awk -F: '{ print $3 }'`
            CXX_VERSION=`lslpp -Lcq vacpp.cmp.core 2>/dev/null | awk -F: '{ print $3 }'`
        fi # COMPILE_ENVIRONMENT
    fi
    case "${target_os}" in
    aix4.1*)
        DLL_SUFFIX='_shr.a'
        ;;
    esac
    if test "$COMPILE_ENVIRONMENT"; then
        MOZ_CHECK_HEADERS(sys/inttypes.h)
    fi # COMPILE_ENVIRONMENT
    AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
    ;;

*-darwin*)
    MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -o $@'
    MKCSHLIB='$(CC) $(CFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -o $@'
    MOZ_OPTIMIZE_FLAGS="-O3"
    # Statically disable jemalloc on 10.5 and 32-bit 10.6.  See bug 702250.
    if test "$HAVE_64BIT_BUILD"; then
        MOZ_MEMORY=1
    fi
    DLL_SUFFIX=".dylib"
    DSO_LDOPTS=''
    STRIP_FLAGS="$STRIP_FLAGS -x -S"
    # Ensure that if we're targeting iOS an SDK was provided.
    AC_CACHE_CHECK(for iOS target,
                   ac_cv_ios_target,
                   [AC_TRY_COMPILE([#include <TargetConditionals.h>
#if !(TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR)
#error not iOS
#endif],
                                   [],
                                   ac_cv_ios_target="yes",
                                   ac_cv_ios_target="no")])
    if test "$ac_cv_ios_target" = "yes" -a -z $MOZ_IOS; then
       AC_MSG_ERROR([targeting iOS but not using an iOS SDK?])
    fi
    if test -n "$MOZ_IOS"; then
        AC_DEFINE(XP_IOS)
        AC_DEFINE(XP_DARWIN)
        _PLATFORM_DEFAULT_TOOLKIT='cairo-uikit'
        direct_nspr_config=1
    else
        AC_DEFINE(XP_MACOSX)
        AC_DEFINE(XP_DARWIN)
        _PLATFORM_DEFAULT_TOOLKIT='cairo-cocoa'
        # The ExceptionHandling framework is needed for Objective-C exception
        # logging code in nsObjCExceptions.h. Currently we only use that in debug
        # builds.
        MOZ_DEBUG_LDFLAGS="$MOZ_DEBUG_LDFLAGS -framework ExceptionHandling";
    fi
    TARGET_NSPR_MDCPUCFG='\"md/_darwin.cfg\"'

    if test "x$lto_is_enabled" = "xyes"; then
        echo "Skipping -dead_strip because lto is enabled."
    dnl DTrace and -dead_strip don't interact well. See bug 403132.
    dnl ===================================================================
    elif test "x$enable_dtrace" = "xyes"; then
        echo "Skipping -dead_strip because DTrace is enabled. See bug 403132."
    else
        dnl check for the presence of the -dead_strip linker flag
        AC_MSG_CHECKING([for -dead_strip option to ld])
        _SAVE_LDFLAGS=$LDFLAGS
        LDFLAGS="$LDFLAGS -Wl,-dead_strip"
        AC_TRY_LINK(,[return 0;],_HAVE_DEAD_STRIP=1,_HAVE_DEAD_STRIP=)
        if test -n "$_HAVE_DEAD_STRIP" ; then
            AC_MSG_RESULT([yes])
            MOZ_OPTIMIZE_LDFLAGS="-Wl,-dead_strip"
        else
            AC_MSG_RESULT([no])
        fi

        LDFLAGS=$_SAVE_LDFLAGS
    fi

    dnl With newer linkers we need to pass -allow_heap_execute because of
    dnl Microsoft Silverlight (5.1.10411.0 at least).
    AC_MSG_CHECKING([for -allow_heap_execute option to ld])
    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS -Wl,-allow_heap_execute"
    AC_TRY_LINK(,[return 0;],_HAVE_ALLOW_HEAP_EXECUTE=1,
                _HAVE_ALLOW_HEAP_EXECUTE=)
    if test -n "$_HAVE_ALLOW_HEAP_EXECUTE" ; then
        AC_MSG_RESULT([yes])
        MOZ_ALLOW_HEAP_EXECUTE_FLAGS="-Wl,-allow_heap_execute"
    else
        AC_MSG_RESULT([no])
    fi
    LDFLAGS=$_SAVE_LDFLAGS

    MOZ_FIX_LINK_PATHS='-Wl,-executable_path,$(LIBXUL_DIST)/bin'
    ;;

ia64*-hpux*)
    DLL_SUFFIX=".so"
    if test ! "$GNU_CC"; then
       DSO_LDOPTS='-b'
       DSO_CFLAGS=""
       DSO_PIC_CFLAGS=
       MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_LDOPTS) -o $@'
       MKCSHLIB='$(CC) $(CFLAGS) $(DSO_LDOPTS) -o $@'
       CXXFLAGS="$CXXFLAGS -Wc,-ansi_for_scope,on"
    else
       DSO_LDOPTS='-b -E'
       MKSHLIB='$(LD) $(DSO_LDOPTS) -o $@'
       MKCSHLIB='$(LD) $(DSO_LDOPTS) -o $@'
    fi
    MOZ_FIX_LINK_PATHS=
    AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
    AC_DEFINE(_LARGEFILE64_SOURCE)
    ;;

*-hpux*)
    DLL_SUFFIX=".sl"
    if test ! "$GNU_CC"; then
        DSO_LDOPTS='-b -Wl,+s'
        DSO_CFLAGS=""
        DSO_PIC_CFLAGS="+Z"
        MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_LDOPTS) -L$(LIBXUL_DIST)/bin -o $@'
        MKCSHLIB='$(LD) -b +s -L$(LIBXUL_DIST)/bin -o $@'
        CXXFLAGS="$CXXFLAGS -Wc,-ansi_for_scope,on"
    else
        DSO_LDOPTS='-b -E +s'
        MKSHLIB='$(LD) $(DSO_LDOPTS) -L$(LIBXUL_DIST)/bin -L$(LIBXUL_DIST)/lib -o $@'
        MKCSHLIB='$(LD) $(DSO_LDOPTS) -L$(LIBXUL_DIST)/bin -L$(LIBXUL_DIST)/lib -o $@'
    fi
    MOZ_POST_PROGRAM_COMMAND='chatr +s enable'
    AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
    ;;

*-android*|*-linuxandroid*)
    AC_DEFINE(NO_PW_GECOS)
    no_x=yes
    if test -n "$gonkdir"; then
        _PLATFORM_DEFAULT_TOOLKIT=cairo-gonk
        _PLATFORM_HAVE_RIL=1
        MOZ_B2G_FM=1
        MOZ_SYNTH_PICO=1
    else
        _PLATFORM_DEFAULT_TOOLKIT=cairo-android
        if test "$COMPILE_ENVIRONMENT"; then
            MOZ_LINKER=1
        fi
    fi
    TARGET_NSPR_MDCPUCFG='\"md/_linux.cfg\"'

    MOZ_GFX_OPTIMIZE_MOBILE=1
    MOZ_OPTIMIZE_FLAGS="-Os -fno-reorder-functions"
    if test -z "$CLANG_CC"; then
       MOZ_OPTIMIZE_FLAGS="-freorder-blocks $MOZ_OPTIMIZE_FLAGS"
    fi
    ;;

*-*linux*)
    # Note: both GNU_CC and INTEL_CC are set when using Intel's C compiler.
    # Similarly for GNU_CXX and INTEL_CXX.
    if test "$INTEL_CC" -o "$INTEL_CXX"; then
        # -Os has been broken on Intel's C/C++ compilers for quite a
        # while; Intel recommends against using it.
        MOZ_OPTIMIZE_FLAGS="-O2"
    elif test "$GNU_CC" -o "$GNU_CXX"; then
        MOZ_PGO_OPTIMIZE_FLAGS="-O3"
        MOZ_OPTIMIZE_FLAGS="-Os"
        if test -z "$CLANG_CC"; then
           MOZ_OPTIMIZE_FLAGS="-freorder-blocks $MOZ_OPTIMIZE_FLAGS"
        fi
    fi

    TARGET_NSPR_MDCPUCFG='\"md/_linux.cfg\"'

    MOZ_MEMORY=1

    case "${target_cpu}" in
    alpha*)
        CFLAGS="$CFLAGS -mieee"
        CXXFLAGS="$CXXFLAGS -mieee"
    ;;
    esac

    if test -z "$MC"; then
        MC=mc.exe
    fi
    ;;
*-mingw*)
    DSO_CFLAGS=
    DSO_PIC_CFLAGS=
    DLL_SUFFIX=.dll
    RC=rc.exe
    MC=mc.exe
    # certain versions of cygwin's makedepend barf on the
    # #include <string> vs -I./dist/include/string issue so don't use it
    if test -n "$GNU_CC" -o -n "$CLANG_CC"; then
        CC="$CC -mwindows"
        CXX="$CXX -mwindows"
        CPP="$CPP -mwindows"
        CFLAGS="$CFLAGS -mms-bitfields"
        CXXFLAGS="$CXXFLAGS -mms-bitfields"
        DSO_LDOPTS='-shared'
        MKSHLIB='$(CXX) $(DSO_LDOPTS) -o $@'
        MKCSHLIB='$(CC) $(DSO_LDOPTS) -o $@'
        RC='$(WINDRES)'
        # Use static libgcc and libstdc++
        LDFLAGS="$LDFLAGS -static"
        NSPR_LDFLAGS="$NSPR_LDFLAGS -static-libgcc"
        # Use temp file for windres (bug 213281)
        RCFLAGS='-O coff --use-temp-file'
        # mingw doesn't require kernel32, user32, and advapi32 explicitly
        LIBS="$LIBS -luuid -lgdi32 -lwinmm -lwsock32 -luserenv -lsecur32 -lnetapi32"
        MOZ_FIX_LINK_PATHS=
        DLL_PREFIX=
        IMPORT_LIB_SUFFIX=a

        WIN32_CONSOLE_EXE_LDFLAGS=-mconsole
        WIN32_GUI_EXE_LDFLAGS=-mwindows

        # GCC/binutils can't link to a function if we try to include dllexport function
        # in the same library as dllimport caller. To work around it, we build NSPR
        # and NSS with -mnop-fun-dllimport flag. The drawback of this solution is that
        # function thunks need to be generated for cross-DLL calls.
        MOZ_FOLD_LIBS_FLAGS=-mnop-fun-dllimport

        # We use mix of both POSIX and Win32 printf format across the tree, so format
        # warnings are useless on mingw.
        MOZ_C_SUPPORTS_WARNING(-Wno-, format, ac_c_has_wno_format)
        MOZ_CXX_SUPPORTS_WARNING(-Wno-, format, ac_cxx_has_wno_format)
    else
        TARGET_COMPILER_ABI=msvc
        HOST_CC='$(CC)'
        HOST_CXX='$(CXX)'
        HOST_LD='$(LD)'
        if test "$AS_BIN"; then
            AS="$(basename "$AS_BIN")"
        fi
        AR='lib'
        AR_FLAGS='-NOLOGO -OUT:$@'
        AR_EXTRACT=
        RANLIB='echo not_ranlib'
        STRIP='echo not_strip'
        PKG_SKIP_STRIP=1
        XARGS=xargs
        ZIP=zip
        UNZIP=unzip
        DOXYGEN=:
        ASM_SUFFIX=asm
        OBJ_SUFFIX=obj
        LIB_SUFFIX=lib
        DLL_PREFIX=
        LIB_PREFIX=
        IMPORT_LIB_SUFFIX=lib
        MKSHLIB='$(LD) -NOLOGO -DLL -OUT:$@ -PDB:$(LINK_PDBFILE) $(DSO_LDOPTS)'
        MKCSHLIB='$(LD) -NOLOGO -DLL -OUT:$@ -PDB:$(LINK_PDBFILE) $(DSO_LDOPTS)'
        dnl Set subsystem version 5 for Windows XP.
        if test "$CPU_ARCH" = "x86"; then
            WIN32_SUBSYSTEM_VERSION=5.01
        else
            WIN32_SUBSYSTEM_VERSION=6.01
        fi
        WIN32_CONSOLE_EXE_LDFLAGS=-SUBSYSTEM:CONSOLE,$WIN32_SUBSYSTEM_VERSION
        WIN32_GUI_EXE_LDFLAGS=-SUBSYSTEM:WINDOWS,$WIN32_SUBSYSTEM_VERSION
        DSO_LDOPTS=-SUBSYSTEM:WINDOWS,$WIN32_SUBSYSTEM_VERSION
        _USE_CPP_INCLUDE_FLAG=1
        _DEFINES_CFLAGS='-FI $(DEPTH)/dist/include/mozilla-config.h -DMOZILLA_CLIENT'
        _DEFINES_CXXFLAGS='-FI $(DEPTH)/dist/include/mozilla-config.h -DMOZILLA_CLIENT'
        CFLAGS="$CFLAGS -W3 -Gy"
        CXXFLAGS="$CXXFLAGS -W3 -Gy"
        if test "$CPU_ARCH" = "x86" -a -z "$CLANG_CL"; then
            dnl VS2012+ defaults to -arch:SSE2.
            dnl Clang-cl gets confused by -arch:IA32, so don't add it.
            dnl (See https://llvm.org/bugs/show_bug.cgi?id=24335)
            CFLAGS="$CFLAGS -arch:IA32"
            CXXFLAGS="$CXXFLAGS -arch:IA32"
        fi
        dnl VS2013+ requires -FS when parallel building by make -jN.
        dnl If nothing, compiler sometimes causes C1041 error.
        CFLAGS="$CFLAGS -FS"
        CXXFLAGS="$CXXFLAGS -FS"
        # khuey says we can safely ignore MSVC warning C4251
        # MSVC warning C4244 (implicit type conversion may lose data) warns
        # and requires workarounds for perfectly valid code.  Also, GCC/clang
        # don't warn about it by default. So for consistency/sanity, we turn
        # it off on MSVC, too.
        # MSVC warning C4267 warns for narrowing type conversions from size_t
        # to 32-bit integer types on 64-bit platforms.  Since this is virtually
        # the same thing as C4244, we disable C4267, too.
        # MSVC warning C4345 warns of newly conformant behavior as of VS2003.
        # MSVC warning C4351 warns of newly conformant behavior as of VS2005.
        # MSVC warning C4800 warns when a value is implicitly cast to bool,
        # because this also forces narrowing to a single byte, which can be a
        # perf hit.  But this matters so little in practice (and often we want
        # that behavior) that it's better to turn it off.
        # MSVC warning C4819 warns some UTF-8 characters (e.g. copyright sign)
        # on non-Western system locales even if it is in a comment.
        CFLAGS="$CFLAGS -wd4244 -wd4267 -wd4819"
        CXXFLAGS="$CXXFLAGS -wd4251 -wd4244 -wd4267 -wd4345 -wd4351 -wd4800 -wd4819"
        if test -n "$CLANG_CL"; then
            # Suppress the clang-cl warning for the inline 'new' and 'delete' in mozalloc
            CXXFLAGS="$CXXFLAGS -Wno-inline-new-delete"
        fi
        # make 'foo == bar;' error out
        CFLAGS="$CFLAGS -we4553"
        CXXFLAGS="$CXXFLAGS -we4553"
        LIBS="$LIBS kernel32.lib user32.lib gdi32.lib winmm.lib wsock32.lib advapi32.lib secur32.lib netapi32.lib"
        MOZ_DEBUG_LDFLAGS='-DEBUG -DEBUGTYPE:CV'
        WARNINGS_AS_ERRORS='-WX'
        MOZ_OPTIMIZE_FLAGS='-O1 -Oi'
        MOZ_FIX_LINK_PATHS=
        MOZ_COMPONENT_NSPR_LIBS='$(NSPR_LIBS)'
        # Disable these flags on clang-cl since it doesn't ignore unknown arguments by default, and
        # autoconf insists on passing $LDFLAGS to the compiler.
        if test -z "$CLANG_CL"; then
            LDFLAGS="$LDFLAGS -LARGEADDRESSAWARE -NXCOMPAT"
            if test -z "$DEVELOPER_OPTIONS"; then
                LDFLAGS="$LDFLAGS -RELEASE"
            fi
        fi
        dnl For profile-guided optimization
        PROFILE_GEN_CFLAGS="-GL"
        PROFILE_GEN_LDFLAGS="-LTCG:PGINSTRUMENT"
        dnl XXX: PGO builds can fail with warnings treated as errors,
        dnl specifically "no profile data available" appears to be
        dnl treated as an error sometimes. This might be a consequence
        dnl of using WARNINGS_AS_ERRORS in some modules, combined
        dnl with the linker doing most of the work in the whole-program
        dnl optimization/PGO case. I think it's probably a compiler bug,
        dnl but we work around it here.
        PROFILE_USE_CFLAGS="-GL -wd4624 -wd4952"
        dnl XXX: should be -LTCG:PGOPTIMIZE, but that fails on libxul.
        dnl Probably also a compiler bug, but what can you do?
        PROFILE_USE_LDFLAGS="-LTCG:PGUPDATE"
        LDFLAGS="$LDFLAGS -DYNAMICBASE"
        RCFLAGS="-nologo"
        if test "$_CC_MAJOR_VERSION" = "18" -a "$_CC_BUILD_VERSION" = "31101"; then
            dnl Use MaxILKSize as a workaround for LNK1248 in VS2013update4
            dnl See https://connect.microsoft.com/VisualStudio/feedback/details/1044914/fatal-error-lnk1248
            LDFLAGS="$LDFLAGS -MaxILKSize:0x7FF00000"
        fi
        dnl Minimum reqiurement of Gecko is VS2010 or later which supports
        dnl both SSSE3 and SSE4.1.
        HAVE_TOOLCHAIN_SUPPORT_MSSSE3=1
        HAVE_TOOLCHAIN_SUPPORT_MSSE4_1=1
        dnl allow AVX2 code from VS2012
        HAVE_X86_AVX2=1
        MOZ_MEMORY=1
    fi
    AC_DEFINE(HAVE_SNPRINTF)
    AC_DEFINE(_WINDOWS)
    AC_DEFINE(WIN32)
    AC_DEFINE(XP_WIN)
    AC_DEFINE(XP_WIN32)
    AC_DEFINE(HW_THREADS)
    AC_DEFINE(STDC_HEADERS)
    AC_DEFINE(WIN32_LEAN_AND_MEAN)
    dnl See http://support.microsoft.com/kb/143208 to use STL
    AC_DEFINE(NOMINMAX)
    TARGET_MD_ARCH=win32
    _PLATFORM_DEFAULT_TOOLKIT='cairo-windows'
    BIN_SUFFIX='.exe'
    MOZ_USER_DIR="Mozilla"

    dnl Hardcode to win95 for now - cls
    TARGET_NSPR_MDCPUCFG='\"md/_win95.cfg\"'

    dnl set NO_X11 defines here as the general check is skipped on win32
    no_x=yes
    AC_DEFINE(NO_X11)

    case "$host" in
    *-mingw*)
        if test -n "$L10NBASEDIR"; then
            L10NBASEDIR=`cd $L10NBASEDIR && pwd -W`
        fi
        ;;
    esac

    case "$host_os" in
    cygwin*|msvc*|mks*)
        AC_MSG_ERROR([Using a Cygwin build environment is unsupported. Configure cannot check for presence of necessary headers. Please upgrade to MozillaBuild; see https://developer.mozilla.org/en/Windows_Build_Prerequisites.])
        ;;
    esac

    case "$target" in
    i*86-*)
        if test "$HAVE_64BIT_BUILD"; then
            AC_MSG_ERROR([You are targeting i386 but using the 64-bit compiler.])
        fi

        if test -n "$GNU_CC"; then
            CFLAGS="$CFLAGS -mstackrealign -fno-keep-inline-dllexport"
            CXXFLAGS="$CXXFLAGS -mstackrealign -fno-keep-inline-dllexport"
            LDFLAGS="$LDFLAGS -Wl,--enable-stdcall-fixup -Wl,--large-address-aware"
        else
            DSO_LDOPTS="$DSO_LDOPTS -MACHINE:X86"
            # Disable this flag on clang-cl since it doesn't ignore unknown arguments by default, and
            # autoconf insists on passing $LDFLAGS to the compiler.
            if test -z "$CLANG_CL"; then
                LDFLAGS="$LDFLAGS -SAFESEH"
            fi
        fi

        AC_DEFINE(_X86_)
        ;;
    x86_64-*)
        if test -z "$HAVE_64BIT_BUILD"; then
            AC_MSG_ERROR([You are targeting 64-bit but using the 32-bit compiler.])
        fi
        if test -n "$_WIN32_MSVC"; then
            DSO_LDOPTS="$DSO_LDOPTS -MACHINE:X64"
        fi
        AC_DEFINE(_AMD64_)
        ;;
    *)
        AC_DEFINE(_CPU_ARCH_NOT_DEFINED)
        ;;
    esac
    ;;

*-netbsd*)
    DSO_CFLAGS=''
    CFLAGS="$CFLAGS -Dunix"
    CXXFLAGS="$CXXFLAGS -Dunix"
    if $CC -E - -dM </dev/null | grep __ELF__ >/dev/null; then
        DLL_SUFFIX=".so"
        DSO_PIC_CFLAGS='-fPIC -DPIC'
        DSO_LDOPTS='-shared'
        BIN_FLAGS='-Wl,--export-dynamic'
    else
        DSO_PIC_CFLAGS='-fPIC -DPIC'
        DLL_SUFFIX=".so.1.0"
        DSO_LDOPTS='-shared'
    fi
    # This will fail on a.out systems prior to 1.5.1_ALPHA.
    if test "$LIBRUNPATH"; then
        DSO_LDOPTS="-Wl,-R$LIBRUNPATH $DSO_LDOPTS"
    fi
    MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -Wl,-soname,$(DSO_SONAME) -o $@'
    MKCSHLIB='$(CC) $(CFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -Wl,-soname,$(DSO_SONAME) -o $@'
    ;;

*-openbsd*)
    if test "$SO_VERSION"; then
        DLL_SUFFIX=".so.$SO_VERSION"
    else
        DLL_SUFFIX=".so.1.0"
    fi
    MOZ_FIX_LINK_PATHS='-Wl,-rpath-link,$(LIBXUL_DIST)/bin -Wl,-rpath-link,$(prefix)/lib -Wl,-rpath-link,$(if $(X11BASE),$(X11BASE),/usr/X11R6)/lib'
    DSO_CFLAGS=''
    DSO_PIC_CFLAGS='-fPIC'
    DSO_LDOPTS='-shared -fPIC'
    if test "$LIBRUNPATH"; then
        DSO_LDOPTS="-R$LIBRUNPATH $DSO_LDOPTS"
    fi
    ;;

*-solaris*)
    AC_DEFINE(SOLARIS)
    TARGET_NSPR_MDCPUCFG='\"md/_solaris.cfg\"'
    MOZ_FIX_LINK_PATHS=
    # $ORIGIN/.. is for shared libraries under components/ to locate shared
    # libraries one level up (e.g. libnspr4.so)
    if test "$SOLARIS_SUNPRO_CC"; then
       LDFLAGS="$LDFLAGS -z ignore -R '\$\$ORIGIN:\$\$ORIGIN/..' -z lazyload -z combreloc -z muldefs"
       LIBS="-lCrun -lCstd -lc $LIBS"
       AC_DEFINE(NSCAP_DISABLE_DEBUG_PTR_TYPES)
       CFLAGS="$CFLAGS -xlibmieee -xstrconst -xbuiltin=%all -D__FUNCTION__=__func__"
       CXXFLAGS="$CXXFLAGS -xlibmieee -xbuiltin=%all -features=tmplife,tmplrefstatic,extensions,no%except -norunpath -D__FUNCTION__=__func__ -template=no%extdef"
       LDFLAGS="-xildoff $LDFLAGS"
       MMX_FLAGS="-xarch=mmx -xO4"
       SSE_FLAGS="-xarch=sse"
       SSE2_FLAGS="-xarch=ssei2 -xO4"
       if test -z "$CROSS_COMPILE" -a -f /usr/lib/ld/map.noexstk; then
           _SAVE_LDFLAGS=$LDFLAGS
           LDFLAGS="-M /usr/lib/ld/map.noexstk $LDFLAGS"
           AC_TRY_LINK([#include <stdio.h>],
                       [printf("Hello World\n");],
                       ,
                       [LDFLAGS=$_SAVE_LDFLAGS])
       fi
       MOZ_OPTIMIZE_FLAGS="-xO4"
       MKSHLIB='$(CXX) $(CXXFLAGS) $(DSO_PIC_FLAGS) $(DSO_LDOPTS) -h $(DSO_SONAME) -o $@'
       MKCSHLIB='$(CC) $(CFLAGS) $(DSO_PIC_FLAGS) $(DSO_LDOPTS) -h $(DSO_SONAME) -o $@'
       DSO_LDOPTS='-G'
       AR_LIST="$AR t"
       AR_EXTRACT="$AR x"
       AR_DELETE="$AR d"
       AR='$(CXX) -xar'
       AR_FLAGS='-o $@'
       AS='/usr/ccs/bin/as'
       ASFLAGS="$ASFLAGS -K PIC -L -P -D_ASM -D__STDC__=0"
       AS_DASH_C_FLAG=''
       TARGET_COMPILER_ABI="sunc"
       CC_VERSION=`$CC -V 2>&1 | grep '^cc:' 2>/dev/null | $AWK -F\: '{ print $2 }'`
       CXX_VERSION=`$CXX -V 2>&1 | grep '^CC:' 2>/dev/null | $AWK -F\: '{ print $2 }'`
       AC_MSG_CHECKING([for Sun C++ compiler version >= 5.9])
       AC_LANG_SAVE
       AC_LANG_CPLUSPLUS
       AC_TRY_COMPILE([],
           [#if (__SUNPRO_CC < 0x590)
           #error "Denied"
           #endif],
           _BAD_COMPILER=,_BAD_COMPILER=1)
       if test -n "$_BAD_COMPILER"; then
           _res="no"
           AC_MSG_ERROR([Sun C++ 5.9 (Sun Studio 12) or higher is required to build. Your compiler version is $CXX_VERSION .])
       else
           _res="yes"
       fi
       AC_TRY_COMPILE([],
           [#if (__SUNPRO_CC >= 0x5100)
           #error "Sun C++ 5.10 or above"
           #endif],
           _ABOVE_SS12U1=,_ABOVE_SS12U1=1)
       if test "$_ABOVE_SS12U1"; then
           # disable xannotate
           CXXFLAGS="$CXXFLAGS -xannotate=no"
       fi
       AC_MSG_RESULT([$_res])
       AC_LANG_RESTORE
    else
       LDFLAGS="$LDFLAGS -Wl,-z,ignore -Wl,-R,'\$\$ORIGIN:\$\$ORIGIN/..' -Wl,-z,lazyload -Wl,-z,combreloc -Wl,-z,muldefs"
       LIBS="-lc $LIBS"
       ASFLAGS="$ASFLAGS -fPIC"
       DSO_LDOPTS='-shared'
       WARNINGS_AS_ERRORS='-Werror'
       _WARNINGS_CFLAGS=''
       _WARNINGS_CXXFLAGS=''
       if test "$OS_RELEASE" = "5.3"; then
           AC_DEFINE(MUST_UNDEF_HAVE_BOOLEAN_AFTER_INCLUDES)
       fi
    fi
    if test "$OS_RELEASE" = "5.5.1"; then
        AC_DEFINE(NEED_USLEEP_PROTOTYPE)
    fi
    ;;

*-sunos*)
    DSO_LDOPTS='-Bdynamic'
    MKSHLIB='-$(LD) $(DSO_LDOPTS) -o $@'
    MKCSHLIB='-$(LD) $(DSO_LDOPTS) -o $@'
    AC_DEFINE(SUNOS4)
    AC_DEFINE(SPRINTF_RETURNS_STRING)
    case "$(target_os)" in
    sunos4.1*)
        DLL_SUFFIX='.so.1.0'
        ;;
    esac
    ;;

esac

AC_SUBST_LIST(MMX_FLAGS)
AC_SUBST_LIST(SSE_FLAGS)
AC_SUBST_LIST(SSE2_FLAGS)

case "$target" in
*-*linux*)
    # Includes linux-android
    AC_DEFINE(XP_LINUX)
    ;;
esac

AC_SUBST(MOZ_LINKER)
if test -n "$MOZ_LINKER"; then
  AC_DEFINE(MOZ_LINKER)
fi

dnl Only one oddball right now (QNX), but this gives us flexibility
dnl if any other platforms need to override this in the future.
AC_DEFINE_UNQUOTED(D_INO,$DIRENT_INO)

dnl ========================================================
dnl = Flags to strip unused symbols from .so components and
dnl = to export jemalloc symbols when linking a program
dnl ========================================================
case "$target" in
    *-linux*|*-kfreebsd*-gnu|*-gnu*)
        MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS='-Wl,--version-script -Wl,$(BUILD_TOOLS)/gnu-ld-scripts/components-version-script'
        ;;
    *-solaris*)
        if test -z "$GNU_CC"; then
         MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS='-M $(BUILD_TOOLS)/gnu-ld-scripts/components-mapfile'
        else
         if test -z "$GCC_USE_GNU_LD"; then
          MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS='-Wl,-M -Wl,$(BUILD_TOOLS)/gnu-ld-scripts/components-mapfile'
         else
          MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS='-Wl,--version-script -Wl,$(BUILD_TOOLS)/gnu-ld-scripts/components-version-script'
         fi
        fi
        ;;
    *-darwin*)
        MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS='-Wl,-exported_symbols_list -Wl,$(BUILD_TOOLS)/gnu-ld-scripts/components-export-list'
        ;;
    *-mingw*)
        if test -n "$GNU_CC"; then
           MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS='-Wl,--version-script,$(BUILD_TOOLS)/gnu-ld-scripts/components-version-script'
        fi
        ;;
esac

if test -z "$COMPILE_ENVIRONMENT"; then
    SKIP_COMPILER_CHECKS=1
    SKIP_LIBRARY_CHECKS=1
else
    MOZ_COMPILER_OPTS
fi # COMPILE_ENVIRONMENT

if test -z "$SKIP_COMPILER_CHECKS"; then
dnl Checks for typedefs, structures, and compiler characteristics.
dnl ========================================================
AC_HEADER_STDC
AC_C_CONST
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_LANG_CPLUSPLUS
AC_LANG_C

AC_LANG_CPLUSPLUS

MOZ_CXX11

AC_LANG_C

dnl Check for .hidden assembler directive and visibility attribute.
dnl Borrowed from glibc configure.in
dnl ===============================================================
if test "$GNU_CC" -a "$OS_TARGET" != WINNT; then
  AC_DEFINE(HAVE_VISIBILITY_HIDDEN_ATTRIBUTE)
  AC_DEFINE(HAVE_VISIBILITY_ATTRIBUTE)
  case "$OS_TARGET" in
  Darwin)
    VISIBILITY_FLAGS='-fvisibility=hidden -fvisibility-inlines-hidden'
    ;;
  *)
    VISIBILITY_FLAGS='-I$(DIST)/system_wrappers -include $(MOZILLA_DIR)/config/gcc_hidden.h'
    WRAP_SYSTEM_INCLUDES=1
    ;;
  esac
fi         # GNU_CC

# visibility hidden flag for Sun Studio on Solaris
if test "$SOLARIS_SUNPRO_CC"; then
VISIBILITY_FLAGS='-xldscope=hidden'
fi         # Sun Studio on Solaris

case "${OS_TARGET}" in
WINNT|Darwin|Android)
  ;;
*)
  STL_FLAGS='-I$(DIST)/stl_wrappers'
  WRAP_STL_INCLUDES=1
  ;;
esac

AC_SUBST(WRAP_SYSTEM_INCLUDES)
AC_SUBST(VISIBILITY_FLAGS)

dnl Checks for header files.
dnl ========================================================
AC_HEADER_DIRENT
case "$target_os" in
freebsd*|openbsd*)
# for stuff like -lXshm
    CPPFLAGS="${CPPFLAGS} ${X_CFLAGS}"
    ;;
esac
MOZ_CHECK_COMMON_HEADERS

dnl These are all the places some variant of statfs can be hiding.
MOZ_CHECK_HEADERS(sys/statvfs.h sys/statfs.h sys/vfs.h sys/mount.h)

dnl Quota support
MOZ_CHECK_HEADERS(sys/quota.h sys/sysmacros.h)
MOZ_CHECK_HEADERS([linux/quota.h],,,[#include <sys/socket.h>])

dnl SCTP support - needs various network include headers
MOZ_CHECK_HEADERS([linux/if_addr.h linux/rtnetlink.h],,,[#include <sys/socket.h>])
MOZ_CHECK_HEADERS(sys/queue.h)

MOZ_CHECK_HEADERS(sys/types.h netinet/in.h byteswap.h)

dnl Check for sin_len and sin6_len - used by SCTP; only appears in Mac/*BSD generally
AC_CACHE_CHECK(for sockaddr_in.sin_len,
                   ac_cv_sockaddr_in_sin_len,
                   [AC_TRY_COMPILE([#ifdef HAVE_SYS_TYPES_H
                                    #include <sys/types.h>
                                    #endif
                                    #include <netinet/in.h>
                                    struct sockaddr_in x;
                                    void *foo = (void*) &x.sin_len;],
                                   [],
                                   [ac_cv_sockaddr_in_sin_len=true],
                                   [ac_cv_sockaddr_in_sin_len=false])])
if test "$ac_cv_sockaddr_in_sin_len" = true ; then
  AC_DEFINE(HAVE_SIN_LEN)
dnl HAVE_CONN_LEN must be the same as HAVE_SIN_LEN (and HAVE_SIN6_LEN too)
  AC_DEFINE(HAVE_SCONN_LEN)
fi

AC_CACHE_CHECK(for sockaddr_in6.sin6_len,
               ac_cv_sockaddr_in6_sin6_len,
               [AC_TRY_COMPILE([#ifdef HAVE_SYS_TYPES_H
                                #include <sys/types.h>
                                #endif
                                #include <netinet/in.h>
                                struct sockaddr_in6 x;
                                void *foo = (void*) &x.sin6_len;],
                               [],
                               [ac_cv_sockaddr_in6_sin6_len=true],
                               [ac_cv_sockaddr_in6_sin6_len=false])])
if test "$ac_cv_sockaddr_in6_sin6_len" = true ; then
  AC_DEFINE(HAVE_SIN6_LEN)
fi

AC_CACHE_CHECK(for sockaddr.sa_len,
               ac_cv_sockaddr_sa_len,
               [AC_TRY_COMPILE([#ifdef HAVE_SYS_TYPES_H
                                #include <sys/types.h>
                                #endif
                                #include <sys/socket.h>
                                struct sockaddr x;
                                void *foo = (void*) &x.sa_len;],
                               [],
                               [ac_cv_sockaddr_sa_len=true],
                               [ac_cv_sockaddr_sa_len=false])])
if test "$ac_cv_sockaddr_sa_len" = true ; then
  AC_DEFINE(HAVE_SA_LEN)
fi

MOZ_ARG_ENABLE_BOOL(dtrace,
              [  --enable-dtrace         build with dtrace support if available (default=no)],
              [enable_dtrace="yes"],)
if test "x$enable_dtrace" = "xyes"; then
  MOZ_CHECK_HEADER(sys/sdt.h, HAVE_DTRACE=1)
  if test -n "$HAVE_DTRACE"; then
      AC_DEFINE(INCLUDE_MOZILLA_DTRACE)
  else
      AC_MSG_ERROR([dtrace enabled but sys/sdt.h not found]);
  fi
fi
AC_SUBST(HAVE_DTRACE)

MOZ_LINUX_PERF_EVENT

dnl Checks for libraries.
dnl ========================================================
case $target in
*-hpux11.*)
    ;;
*)
    AC_CHECK_LIB(c_r, gethostbyname_r)
    ;;
esac

dnl We don't want to link with libdl even if it's present on OS X, since
dnl it's not used and not part of the default installation. OS/2 has dlfcn
dnl in libc.
dnl We don't want to link against libm or libpthread on Darwin since
dnl they both are just symlinks to libSystem and explicitly linking
dnl against libSystem causes issues when debugging (see bug 299601).
case $target in
*-darwin*)
    ;;
*)
    AC_SEARCH_LIBS(dlopen, dl,
        MOZ_CHECK_HEADER(dlfcn.h,
        AC_DEFINE(HAVE_DLOPEN)))
    ;;
esac

_SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -D_GNU_SOURCE"
AC_CHECK_FUNCS(dladdr memmem)
CFLAGS="$_SAVE_CFLAGS"

if test ! "$GNU_CXX"; then

    case $target in
    *-aix*)
        AC_CHECK_LIB(C_r, demangle)
        ;;
     *)
        AC_CHECK_LIB(C, demangle)
        ;;
     esac
fi

AC_CHECK_LIB(socket, socket)

XLDFLAGS="$X_LIBS"
XLIBS="$X_EXTRA_LIBS"

dnl ========================================================
dnl Checks for X libraries.
dnl Ordering is important.
dnl Xt is dependent upon SM as of X11R6
dnl ========================================================
if test "$no_x" = "yes"; then
    AC_DEFINE(NO_X11)
else
    AC_DEFINE_UNQUOTED(FUNCPROTO,15)
    XLIBS="-lX11 $XLIBS"
    _SAVE_LDFLAGS="$LDFLAGS"
    LDFLAGS="$XLDFLAGS $LDFLAGS"
    AC_CHECK_LIB(X11, XDrawLines, [X11_LIBS="-lX11"],
        [MISSING_X="$MISSING_X -lX11"], $XLIBS)
    AC_CHECK_LIB(Xext, XextAddDisplay, [XEXT_LIBS="-lXext"],
        [MISSING_X="$MISSING_X -lXext"], $XLIBS)

    AC_CHECK_LIB(Xt, XtFree, [ XT_LIBS="-lXt"], [
        unset ac_cv_lib_Xt_XtFree
        AC_CHECK_LIB(ICE, IceFlush, [XT_LIBS="-lICE $XT_LIBS"],, $XT_LIBS $XLIBS)
        AC_CHECK_LIB(SM, SmcCloseConnection, [XT_LIBS="-lSM $XT_LIBS"],, $XT_LIBS $XLIBS)
        AC_CHECK_LIB(Xt, XtFree, [ XT_LIBS="-lXt $XT_LIBS"],
            [MISSING_X="$MISSING_X -lXt"], $X_PRE_LIBS $XT_LIBS $XLIBS)
        ])

    # AIX needs the motif library linked before libXt to prevent
    # crashes in plugins linked against Motif - Bug #98892
    case "${target_os}" in
    aix*)
        XT_LIBS="-lXm $XT_LIBS"
        ;;
    esac

    dnl ========================================================
    dnl = Check for XShm
    dnl ========================================================
    AC_CHECK_LIB(Xext, XShmCreateImage, _HAVE_XSHM_XEXT=1,,
        $XLIBS $XEXT_LIBS)

    dnl ========================================================
    dnl = Check for Xss
    dnl ========================================================
    MOZ_CHECK_HEADER(X11/extensions/scrnsaver.h,
        AC_CHECK_LIB(Xss, XScreenSaverQueryInfo,
            [XSS_LIBS="-lXss $XEXT_LIBS $XLIBS"
             AC_DEFINE(HAVE_LIBXSS)],, $XEXT_LIBS $XLIBS))

    LDFLAGS="$_SAVE_LDFLAGS"
fi # $no_x

AC_SUBST_LIST(XCFLAGS)
AC_SUBST_LIST(XLDFLAGS)
AC_SUBST_LIST(XLIBS)
AC_SUBST_LIST(XEXT_LIBS)
AC_SUBST_LIST(XT_LIBS)
AC_SUBST_LIST(XSS_LIBS)

dnl ========================================================
dnl = pthread support
dnl = Start by checking whether the system support pthreads
dnl ========================================================
case "$target_os" in
darwin*)
    MOZ_USE_PTHREADS=1
    ;;
*)
    AC_CHECK_LIB(pthreads, pthread_create,
        MOZ_USE_PTHREADS=1 _PTHREAD_LDFLAGS="-lpthreads",
        AC_CHECK_LIB(pthread, pthread_create,
            MOZ_USE_PTHREADS=1 _PTHREAD_LDFLAGS="-lpthread",
            AC_CHECK_LIB(c_r, pthread_create,
                MOZ_USE_PTHREADS=1 _PTHREAD_LDFLAGS="-lc_r",
                AC_CHECK_LIB(c, pthread_create,
                    MOZ_USE_PTHREADS=1
                )
            )
        )
    )
    ;;
esac

dnl ========================================================
dnl Check the command line for --with-pthreads
dnl ========================================================
MOZ_ARG_WITH_BOOL(pthreads,
[  --with-pthreads         Force use of system pthread library with NSPR ],
[ if test "$MOZ_USE_PTHREADS"x = x; then
    AC_MSG_ERROR([ --with-pthreads specified for a system without pthread support ]);
fi],
    MOZ_USE_PTHREADS=
    _PTHREAD_LDFLAGS=
)

dnl ========================================================
dnl Do the platform specific pthread hackery
dnl ========================================================
if test "$MOZ_USE_PTHREADS"x != x
then
    dnl
    dnl See if -pthread is supported.
    dnl
    rm -f conftest*
    ac_cv_have_dash_pthread=no
    AC_MSG_CHECKING(whether ${CC-cc} accepts -pthread)
    echo 'int main() { return 0; }' | cat > conftest.c
    ${CC-cc} -pthread -o conftest conftest.c > conftest.out 2>&1
    if test $? -eq 0; then
        if test -z "`egrep -i '(unrecognize|unknown)' conftest.out | grep pthread`" -a -z "`egrep -i '(error|incorrect)' conftest.out`" ; then
            ac_cv_have_dash_pthread=yes
            case "$target_os" in
            freebsd*)
# Freebsd doesn't use -pthread for compiles, it uses them for linking
                ;;
            *)
                CFLAGS="$CFLAGS -pthread"
                CXXFLAGS="$CXXFLAGS -pthread"
                ;;
            esac
        fi
    fi
    rm -f conftest*
    AC_MSG_RESULT($ac_cv_have_dash_pthread)

    dnl
    dnl See if -pthreads is supported.
    dnl
    ac_cv_have_dash_pthreads=no
    if test "$ac_cv_have_dash_pthread" = "no"; then
        AC_MSG_CHECKING(whether ${CC-cc} accepts -pthreads)
        echo 'int main() { return 0; }' | cat > conftest.c
        ${CC-cc} -pthreads -o conftest conftest.c > conftest.out 2>&1
        if test $? -eq 0; then
            if test -z "`egrep -i '(unrecognize|unknown)' conftest.out | grep pthreads`" -a -z "`egrep -i '(error|incorrect)' conftest.out`" ; then
                ac_cv_have_dash_pthreads=yes
                CFLAGS="$CFLAGS -pthreads"
                CXXFLAGS="$CXXFLAGS -pthreads"
            fi
        fi
        rm -f conftest*
        AC_MSG_RESULT($ac_cv_have_dash_pthreads)
    fi

    case "$target" in
        *-*-freebsd*)
            AC_DEFINE(_REENTRANT)
            AC_DEFINE(_THREAD_SAFE)
            dnl -pthread links in -lpthread, so don't specify it explicitly.
            if test "$ac_cv_have_dash_pthread" = "yes"; then
                _PTHREAD_LDFLAGS="-pthread"
            fi
            ;;

        *-*-openbsd*|*-*-bsdi*)
            AC_DEFINE(_REENTRANT)
            AC_DEFINE(_THREAD_SAFE)
            dnl -pthread links in -lc_r, so don't specify it explicitly.
            if test "$ac_cv_have_dash_pthread" = "yes"; then
                _PTHREAD_LDFLAGS="-pthread"
            fi
            ;;

        *-*-linux*|*-*-kfreebsd*-gnu|*-*-gnu*)
            AC_DEFINE(_REENTRANT)
            ;;

        *-aix4.3*|*-aix5*)
            AC_DEFINE(_REENTRANT)
            ;;

        *-hpux11.*)
            AC_DEFINE(_REENTRANT)
            ;;

        *-*-solaris*)
            AC_DEFINE(_REENTRANT)
            if test "$SOLARIS_SUNPRO_CC"; then
                CFLAGS="$CFLAGS -mt"
                CXXFLAGS="$CXXFLAGS -mt"
            fi
            ;;
    esac
    LDFLAGS="${_PTHREAD_LDFLAGS} ${LDFLAGS}"
    AC_SUBST(MOZ_USE_PTHREADS)
    MOZ_CHECK_HEADERS(pthread.h)
fi


dnl Checks for library functions.
dnl ========================================================
AC_PROG_GCC_TRADITIONAL
AC_FUNC_MEMCMP
AC_CHECK_FUNCS(stat64 lstat64 truncate64 statvfs64 statvfs statfs64 statfs getpagesize gmtime_r localtime_r arc4random arc4random_buf)

dnl check for clock_gettime(), the CLOCK_MONOTONIC clock
AC_CACHE_CHECK(for clock_gettime(CLOCK_MONOTONIC),
               ac_cv_clock_monotonic,
               [for libs in "" -lrt; do
                    _SAVE_LIBS="$LIBS"
                    LIBS="$LIBS $libs"
                    AC_TRY_LINK([#include <time.h>],
                                 [ struct timespec ts;
                                   clock_gettime(CLOCK_MONOTONIC, &ts); ],
                                 ac_cv_clock_monotonic=$libs
                                 LIBS="$_SAVE_LIBS"
                                 break,
                                 ac_cv_clock_monotonic=no)
                    LIBS="$_SAVE_LIBS"
                done])
if test "$ac_cv_clock_monotonic" != "no"; then
    HAVE_CLOCK_MONOTONIC=1
    REALTIME_LIBS=$ac_cv_clock_monotonic
    AC_DEFINE(HAVE_CLOCK_MONOTONIC)
    AC_SUBST(HAVE_CLOCK_MONOTONIC)
    AC_SUBST_LIST(REALTIME_LIBS)
fi

dnl check for wcrtomb/mbrtowc
dnl =======================================================================
if test -z "$MACOS_DEPLOYMENT_TARGET" || test "$MACOS_DEPLOYMENT_TARGET" -ge "100300"; then
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_CACHE_CHECK(for wcrtomb,
    ac_cv_have_wcrtomb,
    [AC_TRY_LINK([#include <wchar.h>],
                 [mbstate_t ps={0};wcrtomb(0,'f',&ps);],
                 ac_cv_have_wcrtomb="yes",
                 ac_cv_have_wcrtomb="no")])
if test "$ac_cv_have_wcrtomb" = "yes"; then
    AC_DEFINE(HAVE_WCRTOMB)
fi
AC_CACHE_CHECK(for mbrtowc,
    ac_cv_have_mbrtowc,
    [AC_TRY_LINK([#include <wchar.h>],
                 [mbstate_t ps={0};mbrtowc(0,0,0,&ps);],
                 ac_cv_have_mbrtowc="yes",
                 ac_cv_have_mbrtowc="no")])
if test "$ac_cv_have_mbrtowc" = "yes"; then
    AC_DEFINE(HAVE_MBRTOWC)
fi
AC_LANG_RESTORE
fi

AC_CACHE_CHECK(
    [for res_ninit()],
    ac_cv_func_res_ninit,
    [if test "$OS_TARGET" = NetBSD -o "$OS_TARGET" = OpenBSD; then
        dnl no need for res_ninit() on NetBSD and OpenBSD
        ac_cv_func_res_ninit=no
     else
        AC_TRY_LINK([
            #ifdef linux
            #define _BSD_SOURCE 1
            #endif
            #include <sys/types.h>
            #include <netinet/in.h>
            #include <arpa/nameser.h>
            #include <resolv.h>
            ],
            [int foo = res_ninit(&_res);],
            [ac_cv_func_res_ninit=yes],
            [ac_cv_func_res_ninit=no])
     fi
    ])

if test "$ac_cv_func_res_ninit" = "yes"; then
    AC_DEFINE(HAVE_RES_NINIT)
dnl must add the link line we do something as foolish as this... dougt
dnl else
dnl    AC_CHECK_LIB(bind, res_ninit, AC_DEFINE(HAVE_RES_NINIT),
dnl        AC_CHECK_LIB(resolv, res_ninit, AC_DEFINE(HAVE_RES_NINIT)))
fi

AC_LANG_CPLUSPLUS

ICONV_LIBS=

case $target_os in
    darwin*|mingw*)
        ;;
    *)

AC_CHECK_LIB(c, iconv, [ICONV_LIBS=],
    AC_CHECK_LIB(iconv, iconv, [ICONV_LIBS="-liconv"],
        AC_CHECK_LIB(iconv, libiconv, [ICONV_LIBS="-liconv"])))
_SAVE_LIBS=$LIBS
LIBS="$LIBS $ICONV_LIBS"
AC_CACHE_CHECK(
    [for iconv()],
    ac_cv_func_iconv,
    [AC_TRY_LINK([
        #include <stdlib.h>
        #include <iconv.h>
        ],
        [
            iconv_t h = iconv_open("", "");
            iconv(h, NULL, NULL, NULL, NULL);
            iconv_close(h);
        ],
        [ac_cv_func_iconv=yes],
        [ac_cv_func_iconv=no]
        )]
    )
if test "$ac_cv_func_iconv" = "yes"; then
    AC_DEFINE(HAVE_ICONV)
    LIBICONV="$ICONV_LIBS"
    AC_CACHE_CHECK(
        [for iconv() with const input],
        ac_cv_func_const_iconv,
        [AC_TRY_COMPILE([
            #include <stdlib.h>
            #include <iconv.h>
            ],
            [
                const char *input = "testing";
                iconv_t h = iconv_open("", "");
                iconv(h, &input, NULL, NULL, NULL);
                iconv_close(h);
            ],
            [ac_cv_func_const_iconv=yes],
            [ac_cv_func_const_iconv=no]
            )]
        )
    if test "$ac_cv_func_const_iconv" = "yes"; then
        AC_DEFINE(HAVE_ICONV_WITH_CONST_INPUT)
    fi
fi
LIBS=$_SAVE_LIBS

    ;;
esac

AC_SUBST_LIST(ICONV_LIBS)

AM_LANGINFO_CODESET

AC_LANG_C

dnl **********************
dnl *** va_copy checks ***
AC_CACHE_CHECK([for an implementation of va_copy()],
               ac_cv_va_copy,
    [AC_TRY_COMPILE([#include <stdarg.h>
                     #include <stdlib.h>
        void f (int i, ...) {
            va_list args1, args2;
            va_start (args1, i);
            va_copy (args2, args1);
            if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
                exit (1);
            va_end (args1); va_end (args2);
        }],
        [f(0, 42); return 0],
        [ac_cv_va_copy=yes],
        [ac_cv_va_copy=no]
    )]
)
AC_CACHE_CHECK([whether va_list can be copied by value],
               ac_cv_va_val_copy,
    [AC_TRY_COMPILE([#include <stdarg.h>
                     #include <stdlib.h>
        void f (int i, ...) {
            va_list args1, args2;
            va_start (args1, i);
            args2 = args1;
            if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
                exit (1);
            va_end (args1); va_end (args2);
        }],
        [f(0, 42); return 0],
        [ac_cv_va_val_copy=yes],
        [ac_cv_va_val_copy=no],
    )]
)
if test "x$ac_cv_va_copy" = "xyes"; then
    AC_DEFINE(VA_COPY, va_copy)
    AC_DEFINE(HAVE_VA_COPY)
fi

if test "x$ac_cv_va_val_copy" = "xno"; then
   AC_DEFINE(HAVE_VA_LIST_AS_ARRAY)
fi

dnl ===================================================================
dnl ========================================================
dnl Put your C++ language/feature checks below
dnl ========================================================
AC_LANG_CPLUSPLUS

ARM_ABI_PREFIX=
if test "$GNU_CC"; then
  if test "$CPU_ARCH" = "arm" ; then
    AC_CACHE_CHECK(for ARM EABI,
        ac_cv_gcc_arm_eabi,
        [AC_TRY_COMPILE([],
                        [
#if defined(__ARM_EABI__)
  return 0;
#else
#error Not ARM EABI.
#endif
                        ],
                        ac_cv_gcc_arm_eabi="yes",
                        ac_cv_gcc_arm_eabi="no")])
    if test "$ac_cv_gcc_arm_eabi" = "yes"; then
        HAVE_ARM_EABI=1
        ARM_ABI_PREFIX=eabi-
    else
        ARM_ABI_PREFIX=oabi-
    fi
  fi

  TARGET_COMPILER_ABI="${TARGET_COMPILER_ABI-${ARM_ABI_PREFIX}gcc3}"
fi

dnl Check to see if we can resolve ambiguity with |using|.
AC_CACHE_CHECK(whether the C++ \"using\" keyword resolves ambiguity,
               ac_cv_cpp_ambiguity_resolving_using,
               [AC_TRY_COMPILE(class X {
                                 public: int go(const X&) {return 3;}
                                         int jo(const X&) {return 3;}
                               };
                               class Y : public X {
                                 public:  int go(int) {return 2;}
                                          int jo(int) {return 2;}
                                          using X::jo;
                                 private: using X::go;
                               };,
                               X x; Y y; y.jo(x);,
                               ac_cv_cpp_ambiguity_resolving_using=yes,
                               ac_cv_cpp_ambiguity_resolving_using=no)])
if test "$ac_cv_cpp_ambiguity_resolving_using" = yes ; then
   AC_DEFINE(HAVE_CPP_AMBIGUITY_RESOLVING_USING)
fi

dnl See if a dynamic_cast to void* gives the most derived object.
AC_CACHE_CHECK(for C++ dynamic_cast to void*,
               ac_cv_cpp_dynamic_cast_void_ptr,
               [AC_TRY_RUN([class X { int i; public: virtual ~X() { } };
                            class Y { int j; public: virtual ~Y() { } };
                            class Z : public X, public Y { int k; };

                            int main() {
                                 Z mdo;
                                 X *subx = (X*)&mdo;
                                 Y *suby = (Y*)&mdo;
                                 return !((((void*)&mdo != (void*)subx) &&
                                           ((void*)&mdo == dynamic_cast<void*>(subx))) ||
                                          (((void*)&mdo != (void*)suby) &&
                                           ((void*)&mdo == dynamic_cast<void*>(suby))));
                            }],
                           ac_cv_cpp_dynamic_cast_void_ptr=yes,
                           ac_cv_cpp_dynamic_cast_void_ptr=no,
                           ac_cv_cpp_dynamic_cast_void_ptr=no)])
if test "$ac_cv_cpp_dynamic_cast_void_ptr" = yes ; then
   AC_DEFINE(HAVE_CPP_DYNAMIC_CAST_TO_VOID_PTR)
fi


# try harder, when checking for __thread support, see bug 521750 comment #33 and below
# We pass MOZ_OPTIMIZE_LDFLAGS to the linker because if dead_strip is
# enabled, the linker in xcode 4.1 will crash. Without this it would crash when
# linking XUL.
_SAVE_LDFLAGS=$LDFLAGS
LDFLAGS="$LDFLAGS $DSO_PIC_CFLAGS $DSO_LDOPTS $MOZ_OPTIMIZE_LDFLAGS"
AC_CACHE_CHECK(for __thread keyword for TLS variables,
               ac_cv_thread_keyword,
               [AC_TRY_LINK([__thread bool tlsIsMainThread = false;],
                            [return tlsIsMainThread;],
                            ac_cv_thread_keyword=yes,
                            ac_cv_thread_keyword=no)])
LDFLAGS=$_SAVE_LDFLAGS
# The custom dynamic linker doesn't support TLS variables
MOZ_TLS=
if test "$ac_cv_thread_keyword" = yes -a "$MOZ_LINKER" != 1; then
  # mips builds fail with TLS variables because of a binutils bug.
  # See bug 528687
  # OpenBSD doesn't have TLS support, and the test succeeds with clang++
  case "${target}" in
    mips*-*)
      :
      ;;
    *-android*|*-linuxandroid*)
      :
      ;;
    *-openbsd*)
      :
      ;;
    *)
      AC_DEFINE(HAVE_THREAD_TLS_KEYWORD)
      MOZ_TLS=1
      ;;
  esac
fi

dnl Using the custom linker on ARMv6 requires 16k alignment of ELF segments.
if test -n "$MOZ_LINKER"; then
  if test "$CPU_ARCH" = arm; then
    dnl When building for < ARMv7, we need to ensure 16k alignment of ELF segments
    if test -n "$ARM_ARCH" && test "$ARM_ARCH" -lt 7; then
      LDFLAGS="$LDFLAGS -Wl,-z,max-page-size=0x4000 -Wl,-z,common-page-size=0x4000"
      _SUBDIR_LDFLAGS="$_SUBDIR_LDFLAGS -Wl,-z,max-page-size=0x4000 -Wl,-z,common-page-size=0x4000"
    fi
  fi

dnl gold emits wrong sysv-style elf hash tables when building both sysv and
dnl style tables. https://sourceware.org/bugzilla/show_bug.cgi?id=13597
dnl Since the linker only understands the sysv ones, no need to build the
dnl gnu style tables anyways.
  LDFLAGS="$LDFLAGS -Wl,--hash-style=sysv"
fi

dnl The custom linker doesn't support text relocations, but NDK >= r6b
dnl creates some (http://code.google.com/p/android/issues/detail?id=23203)
dnl We however want to avoid these text relocations, and this can be done
dnl by making gcc not link crtbegin and crtend. In the broken NDKs, crtend
dnl doesn't contain anything at all, beside placeholders for some sections,
dnl and crtbegin only contains a finalizer function that calls
dnl __cxa_finalize. The custom linker actually takes care of calling
dnl __cxa_finalize when the library doesn't call it itself, which makes it
dnl safe not to link crtbegin. Besides, previous versions of the NDK didn't
dnl link crtbegin and crtend at all.
if test -n "$MOZ_LINKER" -a "$OS_TARGET" = "Android"; then
  AC_CACHE_CHECK([whether the CRT objects have text relocations],
    ac_cv_crt_has_text_relocations,
    [echo 'int foo() { return 0; }' > conftest.cpp
     if AC_TRY_COMMAND(${CXX-g++} -o conftest${DLL_SUFFIX} $CXXFLAGS $DSO_LDOPTS $LDFLAGS conftest.cpp $LIBS 1>&5) &&
        test -s conftest${DLL_SUFFIX}; then
       if ${TOOLCHAIN_PREFIX}readelf -d conftest${DLL_SUFFIX} | grep TEXTREL > /dev/null; then
         ac_cv_crt_has_text_relocations=yes
       else
         ac_cv_crt_has_text_relocations=no
       fi
     else
       AC_ERROR([couldn't compile a simple C file])
     fi
     rm -rf conftest*])
  if test "$ac_cv_crt_has_text_relocations" = yes; then
    dnl While we want libraries to skip the CRT files, we don't want
    dnl executables to be treated the same way. We thus set the flag
    dnl in DSO_LDOPTS and not LDFLAGS. However, to pass it to nspr,
    dnl we need to use LDFLAGS because nspr doesn't inherit DSO_LDOPTS.
    dnl Using LDFLAGS in nspr is safe, since we only really build
    dnl libraries there.
    DSO_LDOPTS="$DSO_LDOPTS -nostartfiles"
    NSPR_LDFLAGS="$NSPR_LDFLAGS -nostartfiles"
  fi
fi

dnl See if compiler supports some gcc-style attributes

AC_CACHE_CHECK(for __attribute__((always_inline)),
               ac_cv_attribute_always_inline,
               [AC_TRY_COMPILE([inline void f(void) __attribute__((always_inline));],
                               [],
                               ac_cv_attribute_always_inline=yes,
                               ac_cv_attribute_always_inline=no)])

dnl End of C++ language/feature checks
AC_LANG_C

dnl ========================================================
dnl =  Internationalization checks
dnl ========================================================
dnl
dnl Internationalization and Locale support is different
dnl on various UNIX platforms.  Checks for specific i18n
dnl features go here.

dnl check for LC_MESSAGES
AC_CACHE_CHECK(for LC_MESSAGES,
               ac_cv_i18n_lc_messages,
               [AC_TRY_COMPILE([#include <locale.h>],
                               [int category = LC_MESSAGES;],
                               ac_cv_i18n_lc_messages=yes,
                               ac_cv_i18n_lc_messages=no)])
if test "$ac_cv_i18n_lc_messages" = yes; then
   AC_DEFINE(HAVE_I18N_LC_MESSAGES)
fi

AC_HAVE_FUNCS(localeconv)
fi # ! SKIP_COMPILER_CHECKS

MOZ_CHECK_ALLOCATOR

TARGET_XPCOM_ABI=
if test -n "${CPU_ARCH}" -a -n "${TARGET_COMPILER_ABI}"; then
    TARGET_XPCOM_ABI="${CPU_ARCH}-${TARGET_COMPILER_ABI}"
    AC_DEFINE_UNQUOTED(TARGET_XPCOM_ABI, ["${TARGET_XPCOM_ABI}"])
fi

dnl We can't run TRY_COMPILE tests on Windows, so hard-code some
dnl features that Windows actually does support.

if test -n "$SKIP_COMPILER_CHECKS"; then
   dnl Windows has malloc.h
   AC_DEFINE(MALLOC_H, [<malloc.h>])
   AC_DEFINE(HAVE_FORCEINLINE)
   AC_DEFINE(HAVE_LOCALECONV)
fi # SKIP_COMPILER_CHECKS

dnl Mozilla specific options
dnl ========================================================
dnl The macros used for command line options
dnl are defined in build/autoconf/altoptions.m4.

dnl ========================================================
dnl =
dnl = Check for external package dependencies
dnl =
dnl ========================================================
MOZ_ARG_HEADER(External Packages)

MOZ_ARG_WITH_STRING(libxul-sdk,
[  --with-libxul-sdk=PFX   Use the libXUL SDK at <PFX>],
  AC_MSG_ERROR([--with-libxul-sdk is not supported anymore.]))

LIBXUL_DIST="$MOZ_BUILD_ROOT/dist"
AC_SUBST(LIBXUL_DIST)

MOZ_CONFIG_NSPR()

dnl set GRE_MILESTONE
dnl ========================================================
GRE_MILESTONE=`tail -n 1 "$_topsrcdir"/config/milestone.txt 2>/dev/null || tail -1 "$_topsrcdir"/config/milestone.txt`
AC_SUBST(GRE_MILESTONE)

# set RELEASE_BUILD and NIGHTLY_BUILD variables depending on the cycle we're in
# The logic works like this:
# - if we have "a1" in GRE_MILESTONE, we're building Nightly (define NIGHTLY_BUILD)
# - otherwise, if we have "a" in GRE_MILESTONE, we're building Nightly or Aurora
# - otherwise, we're building Release/Beta (define RELEASE_BUILD)
case "$GRE_MILESTONE" in
  *a1*)
      NIGHTLY_BUILD=1
      AC_DEFINE(NIGHTLY_BUILD)
      ;;
  *a*)
      ;;
  *)
      RELEASE_BUILD=1
      AC_DEFINE(RELEASE_BUILD)
      ;;
esac
AC_SUBST(NIGHTLY_BUILD)
AC_SUBST(RELEASE_BUILD)

dnl ========================================================
dnl Multiprocess Firefox Testing UI - Nightly and Aurora
dnl To be removed in Bug 1003313
dnl ========================================================
if test -z "$RELEASE_BUILD"; then
    E10S_TESTING_ONLY=1
    AC_DEFINE(E10S_TESTING_ONLY)
fi

AC_SUBST(E10S_TESTING_ONLY)

dnl ========================================================
dnl system libevent Support
dnl ========================================================
MOZ_ARG_WITH_STRING(system-libevent,
[  --with-system-libevent[=PFX]
                          Use system libevent [installed at prefix PFX]],
    LIBEVENT_DIR=$withval)

_SAVE_CFLAGS=$CFLAGS
_SAVE_LDFLAGS=$LDFLAGS
_SAVE_LIBS=$LIBS
if test "$LIBEVENT_DIR" = yes; then
    PKG_CHECK_MODULES(MOZ_LIBEVENT, libevent,
        MOZ_NATIVE_LIBEVENT=1,
        LIBEVENT_DIR=/usr)
fi
if test -z "$LIBEVENT_DIR" -o "$LIBEVENT_DIR" = no; then
    MOZ_NATIVE_LIBEVENT=
elif test -z "$MOZ_NATIVE_LIBEVENT"; then
    CFLAGS="-I${LIBEVENT_DIR}/include $CFLAGS"
    LDFLAGS="-L${LIBEVENT_DIR}/lib $LDFLAGS"
    MOZ_CHECK_HEADER(event.h,
        [if test ! -f "${LIBEVENT_DIR}/include/event.h"; then
             AC_MSG_ERROR([event.h found, but is not in ${LIBEVENT_DIR}/include])
         fi],
        AC_MSG_ERROR([--with-system-libevent requested but event.h not found]))
    AC_CHECK_LIB(event, event_init,
                 [MOZ_NATIVE_LIBEVENT=1
                  MOZ_LIBEVENT_CFLAGS="-I${LIBEVENT_DIR}/include"
                  MOZ_LIBEVENT_LIBS="-L${LIBEVENT_DIR}/lib -levent"],
                 [MOZ_NATIVE_LIBEVENT= MOZ_LIBEVENT_CFLAGS= MOZ_LIBEVENT_LIBS=])
fi
CFLAGS=$_SAVE_CFLAGS
LDFLAGS=$_SAVE_LDFLAGS
LIBS=$_SAVE_LIBS

AC_SUBST(MOZ_NATIVE_LIBEVENT)

dnl ========================================================
dnl = If NSS was not detected in the system,
dnl = use the one in the source tree (mozilla/security/nss)
dnl ========================================================

MOZ_ARG_WITH_BOOL(system-nss,
[  --with-system-nss       Use system installed NSS],
    _USE_SYSTEM_NSS=1 )

if test -n "$_USE_SYSTEM_NSS"; then
    AM_PATH_NSS(3.19.2, [MOZ_NATIVE_NSS=1], [AC_MSG_ERROR([you don't have NSS installed or your version is too old])])
fi

if test -n "$MOZ_NATIVE_NSS"; then
   NSS_LIBS="$NSS_LIBS -lcrmf"
else
   NSS_CFLAGS='-I$(LIBXUL_DIST)/include/nss'

   if test -z "$GNU_CC" -a "$OS_ARCH" = "WINNT"; then
       NSS_LIBS="\
        \$(LIBXUL_DIST)/lib/\$(LIB_PREFIX)crmf.\$(LIB_SUFFIX) \
        \$(LIBXUL_DIST)/lib/\$(LIB_PREFIX)smime$NSS_VERSION.\$(LIB_SUFFIX) \
        \$(LIBXUL_DIST)/lib/\$(LIB_PREFIX)ssl$NSS_VERSION.\$(LIB_SUFFIX) \
        \$(LIBXUL_DIST)/lib/\$(LIB_PREFIX)nss$NSS_VERSION.\$(LIB_SUFFIX) \
        \$(LIBXUL_DIST)/lib/\$(LIB_PREFIX)nssutil$NSS_VERSION.\$(LIB_SUFFIX)"
   else
       NSS_LIBS='-L$(LIBXUL_DIST)/lib'" -lcrmf -lsmime$NSS_VERSION -lssl$NSS_VERSION -lnss$NSS_VERSION -lnssutil$NSS_VERSION"
   fi
fi

dnl ======================
dnl Detect yasm
dnl ======================

AC_MSG_CHECKING([for YASM assembler])
AC_CHECK_PROGS(YASM, yasm, "")

if test -n "$YASM"; then
  dnl Pull out yasm's version string
  YASM_VERSION=`yasm --version | $AWK '/^yasm/ { print $2 }'`
  _YASM_MAJOR_VERSION=`echo ${YASM_VERSION} | $AWK -F\. '{ print $1 }'`
  _YASM_MINOR_VERSION=`echo ${YASM_VERSION} | $AWK -F\. '{ print $2 }'`
  _YASM_RELEASE=`      echo ${YASM_VERSION} | $AWK -F\. '{ print $3 }'`
  _YASM_BUILD=`        echo ${YASM_VERSION} | $AWK -F\. '{ print $4 }'`
fi

if test -z "$SKIP_LIBRARY_CHECKS"; then
dnl system JPEG support
dnl ========================================================
MOZ_ARG_WITH_STRING(system-jpeg,
[  --with-system-jpeg[=PFX]
                          Use system libjpeg [installed at prefix PFX]],
    JPEG_DIR=$withval)

_SAVE_CFLAGS=$CFLAGS
_SAVE_LDFLAGS=$LDFLAGS
_SAVE_LIBS=$LIBS
if test -n "${JPEG_DIR}" -a "${JPEG_DIR}" != "yes"; then
    CFLAGS="-I${JPEG_DIR}/include $CFLAGS"
    LDFLAGS="-L${JPEG_DIR}/lib $LDFLAGS"
fi
if test -z "$JPEG_DIR" -o "$JPEG_DIR" = no; then
    MOZ_NATIVE_JPEG=
else
    AC_CHECK_LIB(jpeg, jpeg_destroy_compress, [MOZ_NATIVE_JPEG=1 MOZ_JPEG_LIBS="-ljpeg"], MOZ_NATIVE_JPEG=)
fi

if test "$MOZ_NATIVE_JPEG" = 1; then
    AC_TRY_COMPILE([ #include <stdio.h>
                     #include <sys/types.h>
                     #include <jpeglib.h> ],
                   [ #if JPEG_LIB_VERSION < $MOZJPEG
                     #error "Insufficient JPEG library version ($MOZJPEG required)."
                     #endif
                     #ifndef JCS_EXTENSIONS
                     #error "libjpeg-turbo JCS_EXTENSIONS required"
                     #endif
                     ],
                   MOZ_NATIVE_JPEG=1,
                   AC_MSG_ERROR([Insufficient JPEG library version for --with-system-jpeg]))
fi
CFLAGS=$_SAVE_CFLAGS
LDFLAGS=$_SAVE_LDFLAGS
LIBS=$_SAVE_LIBS

if test -n "${JPEG_DIR}" -a -d "${JPEG_DIR}" -a "$MOZ_NATIVE_JPEG" = 1; then
    MOZ_JPEG_CFLAGS="-I${JPEG_DIR}/include"
    MOZ_JPEG_LIBS="-L${JPEG_DIR}/lib ${MOZ_JPEG_LIBS}"
fi
fi # SKIP_LIBRARY_CHECKS

dnl system ZLIB support
dnl ========================================================
MOZ_ZLIB_CHECK([1.2.3])

if test "$MOZ_LINKER" = 1 -a "$MOZ_NATIVE_ZLIB" != 1; then
    AC_MSG_ERROR([Custom dynamic linker requires --with-system-zlib])
fi

MOZ_PNG_ARM_NEON=

if test -z "$SKIP_LIBRARY_CHECKS"; then
dnl system BZIP2 Support
dnl ========================================================
MOZ_ARG_WITH_STRING(system-bz2,
[  --with-system-bz2[=PFX]
                          Use system libbz2 [installed at prefix PFX]],
    BZ2_DIR=$withval)

_SAVE_CFLAGS=$CFLAGS
_SAVE_LDFLAGS=$LDFLAGS
_SAVE_LIBS=$LIBS
if test -n "${BZ2_DIR}" -a "${BZ2_DIR}" != "yes"; then
    CFLAGS="-I${BZ2_DIR}/include $CFLAGS"
    LDFLAGS="-L${BZ2_DIR}/lib $LDFLAGS"
fi
if test -z "$BZ2_DIR" -o "$BZ2_DIR" = no; then
    MOZ_NATIVE_BZ2=
else
    AC_CHECK_LIB(bz2, BZ2_bzread, [MOZ_NATIVE_BZ2=1 MOZ_BZ2_LIBS="-lbz2"],
    [MOZ_NATIVE_BZ2= MOZ_BZ2_CFLAGS= MOZ_BZ2_LIBS=])
fi
CFLAGS=$_SAVE_CFLAGS
LDFLAGS=$_SAVE_LDFLAGS
LIBS=$_SAVE_LIBS

if test "${BZ2_DIR}" -a -d "${BZ2_DIR}" -a "$MOZ_NATIVE_BZ2" = 1; then
    MOZ_BZ2_CFLAGS="-I${BZ2_DIR}/include"
    MOZ_BZ2_LIBS="-L${BZ2_DIR}/lib ${MOZ_BZ2_LIBS}"
fi

dnl ========================================================
dnl system PNG Support
dnl ========================================================
MOZ_ARG_WITH_STRING(system-png,
[  --with-system-png[=PFX]
                          Use system libpng [installed at prefix PFX]],
    PNG_DIR=$withval)

_SAVE_CFLAGS=$CFLAGS
_SAVE_LDFLAGS=$LDFLAGS
_SAVE_LIBS=$LIBS
if test -n "${PNG_DIR}" -a "${PNG_DIR}" != "yes"; then
    CFLAGS="-I${PNG_DIR}/include $CFLAGS"
    LDFLAGS="-L${PNG_DIR}/lib $LDFLAGS"
fi
if test -z "$PNG_DIR" -o "$PNG_DIR" = no; then
    MOZ_NATIVE_PNG=
else
    AC_CHECK_LIB(png, png_get_valid, [MOZ_NATIVE_PNG=1 MOZ_PNG_LIBS="-lpng"],
                 AC_MSG_ERROR([--with-system-png requested but no working libpng found]))
    AC_CHECK_LIB(png, png_get_acTL, ,
                 AC_MSG_ERROR([--with-system-png won't work because the system's libpng doesn't have APNG support]))
fi
if test "$MOZ_NATIVE_PNG" = 1; then
    AC_TRY_COMPILE([ #include <stdio.h>
                     #include <sys/types.h>
                     #include <png.h> ],
                   [ #if PNG_LIBPNG_VER < $MOZPNG
                     #error "Insufficient libpng version ($MOZPNG required)."
                     #endif
                     #ifndef PNG_UINT_31_MAX
                     #error "Insufficient libpng version."
                     #endif ],
                   MOZ_NATIVE_PNG=1,
                   AC_MSG_ERROR([--with-system-png requested but no working libpng found]))
fi
CFLAGS=$_SAVE_CFLAGS
LDFLAGS=$_SAVE_LDFLAGS
LIBS=$_SAVE_LIBS

if test "${PNG_DIR}" -a -d "${PNG_DIR}" -a "$MOZ_NATIVE_PNG" = 1; then
    MOZ_PNG_CFLAGS="-I${PNG_DIR}/include"
    MOZ_PNG_LIBS="-L${PNG_DIR}/lib ${MOZ_PNG_LIBS}"
fi

MOZ_PNG_ARM_NEON_CHECK=
if test "$MOZ_NATIVE_PNG" != 1 -a "$CPU_ARCH" = "arm" ; then
    MOZ_ARG_ENABLE_STRING(png-arm-neon-support,
        [  --enable-png-arm-neon-support=TYPE
             Options include:
                 no
                 check (default)
                 nocheck (faster but unsafe)],
        [MOZ_PNG_ARM_NEON_SUPPORT=$enableval ] )
    case "$MOZ_PNG_ARM_NEON_SUPPORT" in
        no)
            # enable-png-arm-neon-support = no
            ;;
        nocheck)
            # enable-png-arm-neon-support = nocheck
            MOZ_PNG_ARM_NEON=1
            ;;
        *)
            MOZ_PNG_ARM_NEON=1
            MOZ_PNG_ARM_NEON_CHECK=1
            ;;
    esac
fi

AC_SUBST(MOZ_PNG_ARM_NEON_CHECK)

fi # SKIP_LIBRARY_CHECKS

AC_SUBST(MOZ_PNG_ARM_NEON)

dnl ========================================================
dnl system HunSpell Support
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(system-hunspell,
[  --enable-system-hunspell
                          Use system hunspell (located with pkgconfig)],
    MOZ_NATIVE_HUNSPELL=1 )

if test -n "$MOZ_NATIVE_HUNSPELL"; then
    PKG_CHECK_MODULES(MOZ_HUNSPELL, hunspell)
fi

AC_SUBST(MOZ_NATIVE_HUNSPELL)

dnl ========================================================
dnl system libffi Support
dnl ========================================================
MOZ_CONFIG_FFI()

MOZ_ARG_ENABLE_BOOL(shared-js,
[  --enable-shared-js
                          Create a shared JavaScript library.],
    JS_SHARED_LIBRARY=1,
    JS_SHARED_LIBRARY=)

dnl ========================================================
dnl Java SDK support
dnl ========================================================

JAVA_BIN_PATH=
MOZ_ARG_WITH_STRING(java-bin-path,
[  --with-java-bin-path=dir
                          Location of Java binaries (java, javac, jar)],
    JAVA_BIN_PATH=$withval)

dnl ========================================================
dnl =
dnl = Application
dnl =
dnl ========================================================

MOZ_ARG_HEADER(Application)

ENABLE_TESTS=1
ENABLE_SYSTEM_EXTENSION_DIRS=1
MOZ_BRANDING_DIRECTORY=
MOZ_OFFICIAL_BRANDING=
MOZ_FEEDS=1
MOZ_WEBAPP_RUNTIME=
MOZ_AUTH_EXTENSION=1
if test "$MOZ_IOS"; then
   MOZ_AUTH_EXTENSION=
fi
MOZ_RAW=
MOZ_VORBIS=
MOZ_TREMOR=
MOZ_WAVE=1
MOZ_SAMPLE_TYPE_FLOAT32=
MOZ_SAMPLE_TYPE_S16=
MOZ_WEBM=1
MOZ_GSTREAMER=
MOZ_DIRECTSHOW=
MOZ_WMF=
if test -n "$MOZ_FMP4"; then
  MOZ_FMP4=1
else
  MOZ_FMP4=
fi
MOZ_FFMPEG=
MOZ_WEBRTC=1
MOZ_PEERCONNECTION=
MOZ_SRTP=
MOZ_WEBRTC_SIGNALING=
MOZ_WEBRTC_ASSERT_ALWAYS=1
MOZ_WEBRTC_HARDWARE_AEC_NS=
MOZ_SCTP=
MOZ_ANDROID_OMX=
MOZ_MEDIA_NAVIGATOR=
MOZ_OMX_PLUGIN=
MOZ_VPX=
MOZ_VPX_ERROR_CONCEALMENT=
MOZ_WEBSPEECH=1
MOZ_WEBSPEECH_MODELS=
MOZ_WEBSPEECH_POCKETSPHINX=
MOZ_WEBSPEECH_TEST_BACKEND=1
VPX_AS=
VPX_ASFLAGS=
VPX_AS_CONVERSION=
VPX_ASM_SUFFIX=
VPX_X86_ASM=
VPX_ARM_ASM=
LIBJPEG_TURBO_AS=
LIBJPEG_TURBO_ASFLAGS=
MOZ_PERMISSIONS=1
MOZ_PLACES=1
MOZ_SOCIAL=1
MOZ_PREF_EXTENSIONS=1
MOZ_PROFILELOCKING=1
MOZ_REFLOW_PERF=
MOZ_SAFE_BROWSING=
MOZ_HELP_VIEWER=
MOZ_SPELLCHECK=1
MOZ_ANDROID_APZ=
MOZ_TOOLKIT_SEARCH=1
MOZ_UI_LOCALE=en-US
MOZ_UNIVERSALCHARDET=1
MOZ_URL_CLASSIFIER=
MOZ_XUL=1
MOZ_ZIPWRITER=1
NS_PRINTING=1
if test "$MOZ_IOS"; then
   NS_PRINTING=
fi
MOZ_PDF_PRINTING=
MOZ_NO_SMART_CARDS=
NSS_DISABLE_DBM=
NECKO_COOKIES=1
NECKO_PROTOCOLS_DEFAULT="about app data file ftp http res viewsource websocket wyciwyg device"
if test -n "$MOZ_RTSP"; then
  NECKO_PROTOCOLS_DEFAULT="$NECKO_PROTOCOLS_DEFAULT rtsp"
fi
USE_ARM_KUSER=
BUILD_CTYPES=1
MOZ_USE_NATIVE_POPUP_WINDOWS=
MOZ_ANDROID_HISTORY=
MOZ_WEBSMS_BACKEND=
MOZ_ANDROID_BEAM=
MOZ_LOCALE_SWITCHER=
MOZ_ANDROID_READING_LIST_SERVICE=
MOZ_ANDROID_SEARCH_ACTIVITY=
MOZ_ANDROID_DOWNLOADS_INTEGRATION=
MOZ_ANDROID_MLS_STUMBLER=
MOZ_ANDROID_SHARE_OVERLAY=
MOZ_INSTALL_TRACKING=
MOZ_SWITCHBOARD=
ACCESSIBILITY=1
MOZ_TIME_MANAGER=
MOZ_SIMPLEPUSH=
MOZ_PAY=
MOZ_AUDIO_CHANNEL_MANAGER=
MOZ_CONTENT_SANDBOX=
MOZ_GMP_SANDBOX=
MOZ_SANDBOX=1
MOZ_BINARY_EXTENSIONS=
MOZ_ADDON_SIGNING=
MOZ_REQUIRE_SIGNING=

case "$target_os" in
    mingw*)
        NS_ENABLE_TSF=1
        AC_DEFINE(NS_ENABLE_TSF)
        ;;
esac

case "${target}" in
    *-android*|*-linuxandroid*)
        if test "$CPU_ARCH" = "arm" ; then
          USE_ARM_KUSER=1
        fi

        NSS_DISABLE_DBM=1
        MOZ_THEME_FASTSTRIPE=1
        MOZ_TREE_FREETYPE=1
        if test "$COMPILE_ENVIRONMENT"; then
            MOZ_MEMORY=1
        fi
        MOZ_RAW=1
        ;;

esac

MOZ_ARG_WITH_STRING(external-source-dir,
[  --with-external-source-dir=dir
                          External directory containing additional build files.],
[ EXTERNAL_SOURCE_DIR=$withval])
AC_SUBST(EXTERNAL_SOURCE_DIR)

MOZ_ARG_ENABLE_STRING(application,
[  --enable-application=APP
                          Options include:
                            browser (Firefox)
                            xulrunner
                            tools/update-packaging (AUS-related packaging tools)],
[ MOZ_BUILD_APP=$enableval ] )

MOZ_ARG_WITH_STRING(xulrunner-stub-name,
[  --with-xulrunner-stub-name=appname   Create the xulrunner stub with the given name],
  XULRUNNER_STUB_NAME=$withval)

if test -z "$XULRUNNER_STUB_NAME"; then
  XULRUNNER_STUB_NAME=xulrunner-stub
fi
AC_SUBST(XULRUNNER_STUB_NAME)

AC_MSG_CHECKING([for application to build])
if test -z "$MOZ_BUILD_APP"; then
  AC_MSG_RESULT([browser])
  MOZ_BUILD_APP=browser
else
  # "mobile" no longer exists.
  if test "$MOZ_BUILD_APP" = "mobile" ; then
    AC_MSG_RESULT([none])
    AC_MSG_ERROR([--enable-application=mobile is no longer supported.])
  fi
  # Support comm-central.
  if test -n "$EXTERNAL_SOURCE_DIR" ; then
    MOZ_BUILD_APP="$EXTERNAL_SOURCE_DIR/$MOZ_BUILD_APP"
    MOZ_BUILD_APP=`${PYTHON} -c "import mozpack.path as mozpath; print(mozpath.relpath(\"${MOZ_BUILD_APP}\", \"${srcdir}\"))"`
  fi
  # We have a valid application only if it has a build.mk file in its top
  # directory.
  if test ! -f "${srcdir}/${MOZ_BUILD_APP}/build.mk" ; then
    AC_MSG_RESULT([none])
    AC_MSG_ERROR([--enable-application value not recognized (${MOZ_BUILD_APP}/build.mk does not exist).])
  else
    AC_MSG_RESULT([$MOZ_BUILD_APP])
  fi
fi

# The app update channel is 'default' when not supplied. The value is used in
# the application's confvars.sh so it must be set before confvars.sh is called.
MOZ_ARG_ENABLE_STRING([update-channel],
[  --enable-update-channel=CHANNEL
                          Select application update channel (default=default)],
    MOZ_UPDATE_CHANNEL=`echo $enableval | tr A-Z a-z`)

if test -z "$MOZ_UPDATE_CHANNEL"; then
    MOZ_UPDATE_CHANNEL=default
fi
AC_DEFINE_UNQUOTED(MOZ_UPDATE_CHANNEL, $MOZ_UPDATE_CHANNEL)
AC_SUBST(MOZ_UPDATE_CHANNEL)

# Allow to specify a Mozilla API key file that contains the secret key to be
# used for various Mozilla API requests.
MOZ_ARG_WITH_STRING(mozilla-api-keyfile,
[  --with-mozilla-api-keyfile=file   Use the secret key contained in the given keyfile for Mozilla API requests],
  MOZ_MOZILLA_API_KEY=`cat $withval`)
if test -z "$MOZ_MOZILLA_API_KEY"; then
    MOZ_MOZILLA_API_KEY=no-mozilla-api-key
fi
AC_SUBST(MOZ_MOZILLA_API_KEY)

# Allow to specify a Google API key file that contains the secret key to be
# used for various Google API requests.
MOZ_ARG_WITH_STRING(google-api-keyfile,
[  --with-google-api-keyfile=file   Use the secret key contained in the given keyfile for Google API requests],
  MOZ_GOOGLE_API_KEY=`cat $withval`)
if test -z "$MOZ_GOOGLE_API_KEY"; then
    MOZ_GOOGLE_API_KEY=no-google-api-key
fi
AC_SUBST(MOZ_GOOGLE_API_KEY)

# Allow to specify a Google OAuth API key file that contains the client ID and
# the secret key to be used for various Google OAuth API requests.
MOZ_ARG_WITH_STRING(google-oauth-api-keyfile,
[ --with-google-oauth-api-keyfile=file  Use the client id and secret key contained in the given keyfile for Google OAuth API requests],
 [MOZ_GOOGLE_OAUTH_API_CLIENTID=`cat $withval | cut -f 1 -d " "`
  MOZ_GOOGLE_OAUTH_API_KEY=`cat $withval | cut -f 2 -d " "`])
if test -z "$MOZ_GOOGLE_OAUTH_API_CLIENTID"; then
    MOZ_GOOGLE_OAUTH_API_CLIENTID=no-google-oauth-api-clientid
    MOZ_GOOGLE_OAUTH_API_KEY=no-google-oauth-api-key
fi
AC_SUBST(MOZ_GOOGLE_OAUTH_API_CLIENTID)
AC_SUBST(MOZ_GOOGLE_OAUTH_API_KEY)

# Allow specifying a Bing API key file that contains the client ID and the
# secret key to be used for the Bing Translation API requests.
MOZ_ARG_WITH_STRING(bing-api-keyfile,
[  --with-bing-api-keyfile=file   Use the client id and secret key contained in the given keyfile for Bing API requests],
 [MOZ_BING_API_CLIENTID=`cat $withval | cut -f 1 -d " "`
  MOZ_BING_API_KEY=`cat $withval | cut -f 2 -d " "`])
if test -z "$MOZ_BING_API_CLIENTID"; then
    MOZ_BING_API_CLIENTID=no-bing-api-clientid
    MOZ_BING_API_KEY=no-bing-api-key
fi
AC_SUBST(MOZ_BING_API_CLIENTID)
AC_SUBST(MOZ_BING_API_KEY)

# Allow specifying an Adjust SDK key file that contains the app token used for
# Adjust SDK requests.
MOZ_ARG_WITH_STRING(adjust-sdk-keyfile,
[  --with-adjust-sdk-keyfile=file   Use the app token contained in the given keyfile for Adjust SDK requests],
  MOZ_INSTALL_TRACKING_ADJUST_SDK_APP_TOKEN=`cat $withval`)
AC_SUBST(MOZ_INSTALL_TRACKING_ADJUST_SDK_APP_TOKEN)

# Whether to include optional-but-large font files in the final APK.
# We want this in mobile/android/confvars.sh, so it goes early.
MOZ_ARG_DISABLE_BOOL(android-include-fonts,
[  --disable-android-include-fonts
                          Disable the inclusion of fonts into the final APK],
    MOZ_ANDROID_EXCLUDE_FONTS=1)

if test -n "$MOZ_ANDROID_EXCLUDE_FONTS"; then
    AC_DEFINE(MOZ_ANDROID_EXCLUDE_FONTS)
fi
AC_SUBST(MOZ_ANDROID_EXCLUDE_FONTS)

# Whether this APK is destined for resource constrained devices.
# We want this in mobile/android/confvars.sh, so it goes early.
MOZ_ARG_ENABLE_BOOL(android-resource-constrained,
[  --enable-android-resource-constrained
                          Exclude hi-res images and similar from the final APK],
    MOZ_ANDROID_RESOURCE_CONSTRAINED=1)

if test -n "$MOZ_ANDROID_RESOURCE_CONSTRAINED"; then
    AC_DEFINE(MOZ_ANDROID_RESOURCE_CONSTRAINED)
fi
AC_SUBST(MOZ_ANDROID_RESOURCE_CONSTRAINED)

dnl ========================================================
dnl = Trademarked Branding
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(official-branding,
[  --enable-official-branding
                          Enable Official mozilla.org Branding
                          Do not distribute builds with
                          --enable-official-branding unless you have
                          permission to use trademarks per
                          http://www.mozilla.org/foundation/trademarks/ .],
    MOZ_OFFICIAL_BRANDING=1,
    MOZ_OFFICIAL_BRANDING=)

# Allow the application to influence configure with a confvars.sh script.
AC_MSG_CHECKING([if app-specific confvars.sh exists])
if test -f "${srcdir}/${MOZ_BUILD_APP}/confvars.sh" ; then
  AC_MSG_RESULT([${srcdir}/${MOZ_BUILD_APP}/confvars.sh])
  . "${srcdir}/${MOZ_BUILD_APP}/confvars.sh"
else
  AC_MSG_RESULT([no])
fi

# Allow influencing configure with a defines.sh script.
. "${srcdir}/build/defines.sh"

# If we're not building a release build, define EARLY_BETA_OR_EARLIER if it is
# set in defines.sh
if test "$BUILDING_RELEASE"; then
  # Override value in defines.sh, if any
  EARLY_BETA_OR_EARLIER=
elif test "$EARLY_BETA_OR_EARLIER"; then
  AC_DEFINE(EARLY_BETA_OR_EARLIER)
fi
AC_SUBST(EARLY_BETA_OR_EARLIER)

# Allow someone to change MOZ_APP_NAME and MOZ_APP_BASENAME in mozconfig
MOZ_ARG_WITH_STRING(app-name,
[--with-app-name=APPNAME sets MOZ_APP_NAME to APPNAME],
WITH_APP_NAME=$withval,
)

if test -n "$WITH_APP_NAME" ; then
    MOZ_APP_NAME="$WITH_APP_NAME"
fi

MOZ_ARG_WITH_STRING(app-basename,
[--with-app-basename=BASENAME sets MOZ_APP_BASENAME to BASENAME],
WITH_APP_BASENAME=$withval,
)

if test -n "$WITH_APP_BASENAME" ; then
    MOZ_APP_BASENAME="$WITH_APP_BASENAME"
fi

# Special cases where we need to AC_DEFINE something. Also a holdover for apps
# that haven't made a confvars.sh yet. Don't add new stuff here, use
# MOZ_BUILD_APP.
case "$MOZ_BUILD_APP" in
browser)
  AC_DEFINE(MOZ_PHOENIX)

  BUILD_BACKENDS="$BUILD_BACKENDS FasterMake"
  ;;

xulrunner)
  AC_DEFINE(MOZ_XULRUNNER)
  ;;
esac

if test -n "$MOZ_B2G"; then
    AC_DEFINE(MOZ_B2G)
fi

# Graphene is a desktop runtime for running applications with a HTML UI.
if test -n "$MOZ_GRAPHENE"; then
    AC_DEFINE(MOZ_GRAPHENE)
fi

if test -n "$MOZ_MULET"; then
    AC_DEFINE(MOZ_MULET)
fi

if test -n "$MOZ_B2GDROID"; then
    AC_DEFINE(MOZ_B2GDROID)
fi

AC_SUBST(MOZ_BUILD_APP)
AC_SUBST(MOZ_PHOENIX)
AC_SUBST(MOZ_XULRUNNER)
AC_SUBST(MOZ_B2G)
AC_SUBST(MOZ_MULET)
AC_SUBST(MOZ_B2G_VERSION)
AC_SUBST(MOZ_B2GDROID)

AC_DEFINE_UNQUOTED(MOZ_BUILD_APP,$MOZ_BUILD_APP)

case "$OS_TARGET" in
WINNT|Darwin|Android)
  MOZ_FOLD_LIBS=1
  ;;
*)
  MOZ_FOLD_LIBS=
  ;;
esac

dnl ========================================================
dnl Ensure Android SDK and build-tools versions depending on
dnl mobile target.
dnl ========================================================

if test -z "$gonkdir" ; then
    case "$MOZ_BUILD_APP" in
    mobile/android | mobile/android/b2gdroid)
        case "$target" in
        *-android*|*-linuxandroid*)
            :
            ;;
        *)
            AC_MSG_ERROR([You must specify --target=arm-linux-androideabi (or some other valid android target) when building with --enable-application=mobile/android or --enable-application=mobile/android/b2gdroid.
             See https://wiki.mozilla.org/Mobile/Fennec/Android#Setup_Fennec_mozconfig for more information about the necessary options])
            ;;
        esac

        MOZ_ANDROID_SDK(23, 23.0.1)
        ;;
    esac
fi

dnl ========================================================
dnl =
dnl = Toolkit Options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Toolkit Options)

    dnl ========================================================
    dnl = Select the default toolkit
    dnl ========================================================
    MOZ_ARG_ENABLE_STRING(default-toolkit,
    [  --enable-default-toolkit=TK
                          Select default toolkit
                          Platform specific defaults:
                            Mac OS X - cairo-cocoa
                            Win32 - cairo-windows
                            * - cairo-gtk2
                            * - cairo-gtk3
                            * - cairo-qt],
    [ _DEFAULT_TOOLKIT=$enableval ],
    [ _DEFAULT_TOOLKIT=$_PLATFORM_DEFAULT_TOOLKIT])

    if test "$_DEFAULT_TOOLKIT" = "cairo-windows" \
        -o "$_DEFAULT_TOOLKIT" = "cairo-gtk2" \
        -o "$_DEFAULT_TOOLKIT" = "cairo-gtk2-x11" \
        -o "$_DEFAULT_TOOLKIT" = "cairo-gtk3" \
        -o "$_DEFAULT_TOOLKIT" = "cairo-qt" \
        -o "$_DEFAULT_TOOLKIT" = "cairo-cocoa" \
        -o "$_DEFAULT_TOOLKIT" = "cairo-uikit" \
        -o "$_DEFAULT_TOOLKIT" = "cairo-android" \
        -o "$_DEFAULT_TOOLKIT" = "cairo-gonk"
    then
        dnl nglayout only supports building with one toolkit,
        dnl so ignore everything after the first comma (",").
        MOZ_WIDGET_TOOLKIT=`echo "$_DEFAULT_TOOLKIT" | sed -e "s/,.*$//"`
    else
        AC_MSG_ERROR([You must specify a default toolkit (perhaps $_PLATFORM_DEFAULT_TOOLKIT).])
    fi

MOZ_ARG_WITHOUT_BOOL(x,
[  --without-x              Build without X11],
    WITHOUT_X11=1)

dnl ========================================================
dnl = Enable the toolkit as needed                         =
dnl ========================================================

MOZ_WIDGET_GTK=

case "$MOZ_WIDGET_TOOLKIT" in

cairo-windows)
    MOZ_WIDGET_TOOLKIT=windows
    MOZ_PDF_PRINTING=1
    MOZ_INSTRUMENT_EVENT_LOOP=1
    ;;

cairo-gtk3)
    MOZ_WIDGET_TOOLKIT=gtk3
    MOZ_ENABLE_GTK=1
    MOZ_ENABLE_GTK3=1
    MOZ_ENABLE_XREMOTE=1
    MOZ_GL_DEFAULT_PROVIDER=GLX

    AC_DEFINE(MOZ_X11)
    MOZ_X11=1
    USE_FC_FREETYPE=1

    TK_CFLAGS='$(MOZ_GTK3_CFLAGS)'
    MOZ_WIDGET_GTK=3
    AC_DEFINE_UNQUOTED(MOZ_WIDGET_GTK,$MOZ_WIDGET_GTK)
    MOZ_PDF_PRINTING=1
    MOZ_INSTRUMENT_EVENT_LOOP=1
    ;;

cairo-gtk2|cairo-gtk2-x11)
    MOZ_WIDGET_TOOLKIT=gtk2
    MOZ_ENABLE_GTK=1
    MOZ_ENABLE_GTK2=1
    MOZ_ENABLE_XREMOTE=1
    MOZ_GL_DEFAULT_PROVIDER=GLX

    AC_DEFINE(MOZ_X11)
    MOZ_X11=1
    USE_FC_FREETYPE=1

    TK_CFLAGS='$(MOZ_GTK2_CFLAGS)'
    TK_LIBS='$(MOZ_GTK2_LIBS)'
    AC_DEFINE(MOZ_WIDGET_GTK2)
    MOZ_WIDGET_GTK=2
    AC_DEFINE_UNQUOTED(MOZ_WIDGET_GTK,$MOZ_WIDGET_GTK)
    MOZ_PDF_PRINTING=1
    MOZ_INSTRUMENT_EVENT_LOOP=1
    ;;

cairo-qt)
    MOZ_WIDGET_TOOLKIT=qt
    MOZ_ENABLE_QT=1
    if test -z "$WITHOUT_X11"; then
      MOZ_ENABLE_XREMOTE=1
      MOZ_GL_DEFAULT_PROVIDER=GLX
      MOZ_X11=1
      AC_DEFINE(MOZ_X11)
      XT_LIBS=
    fi

    USE_FC_FREETYPE=1
    TK_CFLAGS='$(MOZ_QT_CFLAGS)'
    TK_LIBS='$(MOZ_QT_LIBS)'
    AC_DEFINE(MOZ_WIDGET_QT)
    MOZ_PDF_PRINTING=1
    AC_DEFINE(QT_NO_KEYWORDS)
    ;;

cairo-cocoa)
    MOZ_WIDGET_TOOLKIT=cocoa
    AC_DEFINE(MOZ_WIDGET_COCOA)
    LDFLAGS="$LDFLAGS -framework Cocoa -lobjc"
    # Use -Wl as a trick to avoid -framework and framework names from
    # being separated by AC_SUBST_LIST.
    TK_LIBS='-Wl,-framework,CoreLocation -Wl,-framework,QuartzCore -Wl,-framework,Carbon -Wl,-framework,CoreAudio -Wl,-framework,AudioToolbox -Wl,-framework,AudioUnit -Wl,-framework,AddressBook -Wl,-framework,OpenGL'
    TK_CFLAGS="-DNO_X11"
    CFLAGS="$CFLAGS $TK_CFLAGS"
    CXXFLAGS="$CXXFLAGS $TK_CFLAGS"
    MOZ_USER_DIR="Mozilla"
    MOZ_FS_LAYOUT=bundle
    MOZ_INSTRUMENT_EVENT_LOOP=1
    ;;

cairo-uikit)
    MOZ_WIDGET_TOOLKIT=uikit
    AC_DEFINE(MOZ_WIDGET_UIKIT)
    LDFLAGS="$LDFLAGS -framework UIKit -lobjc"
    TK_CFLAGS="-DNO_X11"
    TK_LIBS='-Wl,-framework,Foundation -Wl,-framework,CoreFoundation -Wl,-framework,CoreGraphics -Wl,-framework,CoreText -Wl,-framework,AVFoundation -Wl,-framework,AudioToolbox -Wl,-framework,CoreMedia -Wl,-framework,CoreVideo -Wl,-framework,OpenGLES -Wl,-framework,QuartzCore'
    CFLAGS="$CFLAGS $TK_CFLAGS"
    CXXFLAGS="$CXXFLAGS $TK_CFLAGS"
    MOZ_USER_DIR="Mozilla"
    MOZ_FS_LAYOUT=bundle
    ;;

cairo-android)
    AC_DEFINE(MOZ_WIDGET_ANDROID)
    MOZ_WIDGET_TOOLKIT=android
    TK_CFLAGS='$(MOZ_CAIRO_CFLAGS) $(MOZ_PIXMAN_CFLAGS)'
    TK_LIBS='$(MOZ_CAIRO_LIBS) $(MOZ_PIXMAN_LIBS)'
    MOZ_PDF_PRINTING=1
    MOZ_INSTRUMENT_EVENT_LOOP=1
    ;;

cairo-gonk)
    AC_DEFINE(MOZ_WIDGET_GONK)
    AC_DEFINE(MOZ_TOUCH)
    MOZ_WIDGET_TOOLKIT=gonk
    TK_CFLAGS='$(MOZ_CAIRO_CFLAGS) $(MOZ_PIXMAN_CFLAGS)'
    TK_LIBS='$(MOZ_CAIRO_LIBS) $(MOZ_PIXMAN_LIBS)'
    MOZ_PDF_PRINTING=1
    MOZ_TOUCH=1
    MOZ_INSTRUMENT_EVENT_LOOP=1
    ;;

esac

AC_SUBST(MOZ_PDF_PRINTING)
if test "$MOZ_PDF_PRINTING"; then
   PDF_SURFACE_FEATURE="#define CAIRO_HAS_PDF_SURFACE 1"
   AC_DEFINE(MOZ_PDF_PRINTING)
fi

if test "$MOZ_ENABLE_XREMOTE"; then
    AC_DEFINE(MOZ_ENABLE_XREMOTE)
fi

if test "$MOZ_INSTRUMENT_EVENT_LOOP"; then
   AC_DEFINE(MOZ_INSTRUMENT_EVENT_LOOP)
fi

if test "$COMPILE_ENVIRONMENT"; then
  if test "$MOZ_ENABLE_GTK3"; then
    PKG_CHECK_MODULES(MOZ_GTK3, gtk+-3.0 >= $GTK3_VERSION gtk+-unix-print-3.0 glib-2.0 gobject-2.0 $GDK_PACKAGES)
    MOZ_GTK3_CFLAGS="-I${_topsrcdir}/widget/gtk/compat-gtk3 $MOZ_GTK3_CFLAGS"
    dnl Contrary to MOZ_GTK2_LIBS, MOZ_GTK3_LIBS needs to be literally added to TK_LIBS instead
    dnl of a make reference because of how TK_LIBS is mangled in toolkit/library/moz.build
    dnl for GTK+3 builds.
    TK_LIBS=$MOZ_GTK3_LIBS
    GLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_32
  fi
  if test "$MOZ_ENABLE_GTK2"; then
    GLIB_VERSION_MAX_ALLOWED=$GLIB_VERSION_MIN_REQUIRED
  fi
  if test "$MOZ_ENABLE_GTK"; then
    if test "$MOZ_X11"; then
      GDK_PACKAGES=gdk-x11-2.0
    fi
    AC_DEFINE_UNQUOTED(GLIB_VERSION_MIN_REQUIRED,$GLIB_VERSION_MIN_REQUIRED)
    AC_DEFINE_UNQUOTED(GLIB_VERSION_MAX_ALLOWED,$GLIB_VERSION_MAX_ALLOWED)

    PKG_CHECK_MODULES(MOZ_GTK2, gtk+-2.0 >= $GTK2_VERSION gtk+-unix-print-2.0 glib-2.0 >= $GLIB_VERSION gobject-2.0 $GDK_PACKAGES)
    MOZ_GTK2_CFLAGS="-I${_topsrcdir}/widget/gtk/compat $MOZ_GTK2_CFLAGS"
  fi

fi # COMPILE_ENVIRONMENT

AC_SUBST(MOZ_FS_LAYOUT)

dnl ========================================================
dnl Use ARM userspace kernel helpers; tell NSPR to enable
dnl their usage and use them in spidermonkey.
dnl ========================================================
MOZ_ARG_WITH_BOOL(arm-kuser,
[  --with-arm-kuser         Use kuser helpers (Linux/ARM only -- requires kernel 2.6.13 or later)],
    USE_ARM_KUSER=1,)
if test -n "$USE_ARM_KUSER"; then
   AC_DEFINE(USE_ARM_KUSER)
fi

dnl ========================================================
dnl = startup-notification support module
dnl ========================================================

if test "$MOZ_ENABLE_GTK"
then
    MOZ_ENABLE_STARTUP_NOTIFICATION=

    MOZ_ARG_ENABLE_BOOL(startup-notification,
    [  --enable-startup-notification
                          Enable startup-notification support (default: disabled) ],
        MOZ_ENABLE_STARTUP_NOTIFICATION=force,
        MOZ_ENABLE_STARTUP_NOTIFICATION=)
    if test "$MOZ_ENABLE_STARTUP_NOTIFICATION"
    then
        PKG_CHECK_MODULES(MOZ_STARTUP_NOTIFICATION,
                          libstartup-notification-1.0 >= $STARTUP_NOTIFICATION_VERSION,
        [MOZ_ENABLE_STARTUP_NOTIFICATION=1], [
            if test "$MOZ_ENABLE_STARTUP_NOTIFICATION" = "force"
            then
                AC_MSG_ERROR([* * * Could not find startup-notification >= $STARTUP_NOTIFICATION_VERSION])
            fi
            MOZ_ENABLE_STARTUP_NOTIFICATION=
        ])
    fi

    if test "$MOZ_ENABLE_STARTUP_NOTIFICATION"; then
        AC_DEFINE(MOZ_ENABLE_STARTUP_NOTIFICATION)
    fi

    TK_LIBS="$TK_LIBS $MOZ_STARTUP_NOTIFICATION_LIBS"
fi
AC_SUBST(MOZ_ENABLE_STARTUP_NOTIFICATION)

dnl ========================================================
dnl Disable printing
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(printing,
[  --disable-printing      Disable printing support],
    NS_PRINTING=,
    NS_PRINTING=1)

if test -n "$MOZ_IOS" -a -n "$NS_PRINTING"; then
   AC_MSG_ERROR([Printing is not supported on iOS.])
fi

if test "$NS_PRINTING"; then
    AC_DEFINE(NS_PRINTING)
    AC_DEFINE(NS_PRINT_PREVIEW)
fi

dnl ========================================================
dnl = QT support
dnl ========================================================
if test "$MOZ_ENABLE_QT"
then
    MOZ_ARG_WITH_STRING(qtdir,
    [  --with-qtdir=\$dir       Specify Qt directory ],
    [ QTDIR=$withval])

    if test -z "$QTDIR"; then
        AC_CHECK_PROGS(HOST_QMAKE, $HOST_QMAKE qmake, "")
    else
        HOST_QMAKE="$QTDIR/bin/qmake"
    fi
    QT_VERSION=`$HOST_QMAKE -v | grep 'Using Qt version' | egrep -o '[[0-9]]+\.[[0-9]]+\.[[0-9]]+'`

    if test -z "$QTDIR"; then
        case $QT_VERSION in
        5.*)
            AC_MSG_RESULT("Using qt5: $QT_VERSION")
            PKG_CHECK_MODULES(MOZ_QT, Qt5Gui Qt5Network Qt5Core Qt5Quick, ,
            [
              AC_MSG_ERROR([$MOZ_QT_PKG_ERRORS Need qtbase development packages, (On Ubuntu, you might try installing the packages qtbase5-dev libqt5opengl5-dev.)])
            ])
            QT5INCDIR=`pkg-config --variable=includedir Qt5Gui`
            MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS -I$QT5INCDIR/QtGui/$QT_VERSION/QtGui"
            if test "$NS_PRINTING"; then
                PKG_CHECK_MODULES(MOZ_QT_WIDGETS, Qt5PrintSupport, ,
                [
                  AC_MSG_ERROR([$MOZ_QT_PKG_ERRORS Need qt5 printsupport development package])
                ])
                MOZ_QT_LIBS="$MOZ_QT_LIBS $MOZ_QT_WIDGETS_LIBS"
                MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS $MOZ_QT_WIDGETS_CFLAGS"
            fi
            ;;
        *)
            AC_MSG_ERROR([* * * Unsupported Qt Version: $QT_VERSION])
            ;;
        esac

        AC_CHECK_PROGS(HOST_MOC, $MOC moc, "")
        AC_CHECK_PROGS(HOST_RCC, $RCC rcc, "")
    else
        MOZ_QT_CFLAGS="-DQT_SHARED"
        MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS -I$QTDIR/include"
        MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS -I$QTDIR/include/QtGui"
        MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS -I$QTDIR/include/QtCore"
        MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS -I$QTDIR/include/QtNetwork"
        MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS -I$QTDIR/include/QtXml"
        MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS -I$QTDIR/include/QtDeclarative"
        case $QT_VERSION in
        5.*)
            AC_MSG_RESULT("Using qt5: $QT_VERSION")
            MOZ_QT_LIBS="$MOZ_QT_LIBS -L$QTDIR/lib/ -lQt5Gui -lQt5Network -lQt5Core -lQt5Xml"
            MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS -I$QTDIR/include/QtGui/$QT_VERSION/QtGui"
            if test "$NS_PRINTING"; then
                MOZ_QT_LIBS="$MOZ_QT_LIBS -lQt5Widgets -lQt5PrintSupport"
                MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS -I$QTDIR/include/QtPrintSupport"
            fi
            ;;
        *)
            AC_MSG_ERROR([* * * Unsupported Qt Version: $QT_VERSION])
            ;;
        esac

        HOST_MOC="$QTDIR/bin/moc"
        HOST_RCC="$QTDIR/bin/rcc"
    fi
    if test -z "$HOST_MOC"; then
        AC_MSG_ERROR([No acceptable moc preprocessor found. Qt SDK is not installed or --with-qt is incorrect])
    fi
    if test -z "$HOST_RCC"; then
        AC_MSG_ERROR([No acceptable rcc preprocessor found. Qt SDK is not installed or --with-qt is incorrect])
    fi

    MOC=$HOST_MOC
    RCC=$HOST_RCC

    MOZ_ENABLE_QMSYSTEM2=
    PKG_CHECK_MODULES(_QMSYSTEM2, qmsystem2,
                      MOZ_ENABLE_QMSYSTEM2=1,
                      MOZ_ENABLE_QMSYSTEM2=)

    if test "$MOZ_ENABLE_QMSYSTEM2"; then
      MOZ_ENABLE_QMSYSTEM2=1
      MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS $_QMSYSTEM2_CFLAGS"
      MOZ_QT_LIBS="$MOZ_QT_LIBS $_QMSYSTEM2_LIBS"
      AC_DEFINE(MOZ_ENABLE_QMSYSTEM2)
    fi

    MOZ_ENABLE_QTNETWORK=
    PKG_CHECK_MODULES(_QTNETWORK, QtNetwork >= 4.7,
                      MOZ_ENABLE_QTNETWORK=1,
                      MOZ_ENABLE_QTNETWORK=)

    if test "$MOZ_ENABLE_QTNETWORK"; then
      MOZ_ENABLE_QTNETWORK=1
      AC_DEFINE(MOZ_ENABLE_QTNETWORK)
    fi

    MOZ_ENABLE_QTMOBILITY=
    PKG_CHECK_MODULES(_QTMOBILITY, QtSensors QtFeedback QtLocation,
                      MOZ_ENABLE_QTMOBILITY=1,
                      MOZ_ENABLE_QTMOBILITY=)
    if test "$MOZ_ENABLE_QTMOBILITY"; then
       MOZ_ENABLE_QTMOBILITY=1
       MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS $_QTMOBILITY_CFLAGS"
       MOZ_QT_LIBS="$MOZ_QT_LIBS $_QTMOBILITY_LIBS"
       AC_DEFINE(MOZ_ENABLE_QTMOBILITY)
       AC_SUBST(MOZ_ENABLE_QTMOBILITY)
    else
       AC_CHECK_LIB(QtSensors, main, [
          MOZ_ENABLE_QTMOBILITY=1
          MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS -I$QTDIR/include/QtMobility"
          MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS -I$QTDIR/include/QtSensors"
          MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS -I$QTDIR/include/QtFeedback"
          MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS -I$QTDIR/include/QtLocation"
          MOZ_QT_LIBS="$MOZ_QT_LIBS -lQtSensors -lQtFeedback -lQtLocation"
       ])
    fi

    MOZ_ENABLE_QT5FEEDBACK=
    PKG_CHECK_MODULES(_QT5FEEDBACK, Qt0Feedback,
                      MOZ_ENABLE_QT5FEEDBACK=1,
                      MOZ_ENABLE_QT5FEEDBACK=)
    if test "$MOZ_ENABLE_QT5FEEDBACK"; then
       MOZ_ENABLE_QT5FEEDBACK=1
       MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS $_QT5FEEDBACK_CFLAGS"
       MOZ_QT_LIBS="$MOZ_QT_LIBS $_QT5FEEDBACK_LIBS"
       AC_DEFINE(MOZ_ENABLE_QT5FEEDBACK)
       AC_SUBST(MOZ_ENABLE_QT5FEEDBACK)
    fi

    MOZ_ENABLE_QT5GEOPOSITION=
    PKG_CHECK_MODULES(_QT5GEOPOSITION, Qt5Positioning,
                      MOZ_ENABLE_QT5GEOPOSITION=1,
                      MOZ_ENABLE_QT5GEOPOSITION=)
    if test "$MOZ_ENABLE_QT5GEOPOSITION"; then
       MOZ_ENABLE_QT5GEOPOSITION=1
       MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS $_QT5GEOPOSITION_CFLAGS"
       MOZ_QT_LIBS="$MOZ_QT_LIBS $_QT5GEOPOSITION_LIBS"
       AC_DEFINE(MOZ_ENABLE_QT5GEOPOSITION)
       AC_SUBST(MOZ_ENABLE_QT5GEOPOSITION)
    fi

    if test "$MOZ_ENABLE_CONTENTACTION"; then
      MOZ_ENABLE_CONTENTACTION=1
      AC_DEFINE(MOZ_ENABLE_CONTENTACTION)
    fi

    MOZ_ENABLE_CONTENTACTION=
    PKG_CHECK_MODULES(LIBCONTENTACTION, contentaction-0.1, _LIB_FOUND=1, _LIB_FOUND=)
    if test "$MOZ_ENABLE_CONTENTACTION"; then
       MOZ_ENABLE_CONTENTACTION=1
       MOZ_QT_CFLAGS="$MOZ_QT_CFLAGS $_CONTENTACTION_CFLAGS"
       MOZ_QT_LIBS="$MOZ_QT_LIBS $_CONTENTACTION_LIBS"
       AC_DEFINE(MOZ_ENABLE_CONTENTACTION)
       AC_SUBST(MOZ_ENABLE_CONTENTACTION)
    fi
fi

AC_SUBST(GTK_CONFIG)
AC_SUBST_LIST(TK_CFLAGS)
AC_SUBST_LIST(TK_LIBS)

AC_SUBST(MOZ_ENABLE_GTK2)
AC_SUBST(MOZ_ENABLE_GTK3)
AC_SUBST(MOZ_ENABLE_GTK)
AC_SUBST(MOZ_ENABLE_QT)
AC_SUBST(MOZ_ENABLE_QTNETWORK)
AC_SUBST(MOZ_ENABLE_QMSYSTEM2)
AC_SUBST(MOZ_ENABLE_QTMOBILITY)
AC_SUBST(MOZ_ENABLE_XREMOTE)
AC_SUBST(MOZ_WIDGET_GTK)
AC_SUBST_LIST(MOZ_QT_CFLAGS)
AC_SUBST_LIST(MOZ_QT_LIBS)

AC_SUBST(MOC)
AC_SUBST(RCC)

AC_SUBST(MOZ_X11)

dnl ========================================================
dnl =
dnl = Components & Features
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Components and Features)

dnl ========================================================
dnl = Localization
dnl ========================================================
MOZ_ARG_ENABLE_STRING(ui-locale,
[  --enable-ui-locale=ab-CD
                          Select the user interface locale (default: en-US)],
    MOZ_UI_LOCALE=$enableval )
AC_SUBST(MOZ_UI_LOCALE)

AC_SUBST(MOZ_OFFICIAL_BRANDING)
if test -n "$MOZ_OFFICIAL_BRANDING"; then
  if test -z "$MOZ_OFFICIAL_BRANDING_DIRECTORY"; then
    AC_MSG_ERROR([You must specify MOZ_OFFICIAL_BRANDING_DIRECTORY to use --enable-official-branding.])
  else
    MOZ_BRANDING_DIRECTORY=${MOZ_OFFICIAL_BRANDING_DIRECTORY}
    AC_DEFINE(MOZ_OFFICIAL_BRANDING)
  fi
fi

MOZ_ARG_WITH_STRING(branding,
[  --with-branding=dir     Use branding from the specified directory.],
    MOZ_BRANDING_DIRECTORY=$withval)

REAL_BRANDING_DIRECTORY="${MOZ_BRANDING_DIRECTORY}"
if test -z "$REAL_BRANDING_DIRECTORY"; then
  REAL_BRANDING_DIRECTORY=${MOZ_BUILD_APP}/branding/nightly
fi

if test -f "${_topsrcdir}/$REAL_BRANDING_DIRECTORY/configure.sh"; then
  . "${_topsrcdir}/$REAL_BRANDING_DIRECTORY/configure.sh"
elif test -f "${EXTERNAL_SOURCE_DIR}/$REAL_BRANDING_DIRECTORY/configure.sh"; then
  . "${EXTERNAL_SOURCE_DIR}/$REAL_BRANDING_DIRECTORY/configure.sh"
fi

AC_SUBST(MOZ_BRANDING_DIRECTORY)

dnl ========================================================
dnl = Distribution ID
dnl ========================================================
MOZ_ARG_WITH_STRING(distribution-id,
[  --with-distribution-id=ID
                          Set distribution-specific id (default=org.mozilla)],
[ val=`echo $withval`
    MOZ_DISTRIBUTION_ID="$val"])

if test -z "$MOZ_DISTRIBUTION_ID"; then
   MOZ_DISTRIBUTION_ID="org.mozilla"
fi

AC_DEFINE_UNQUOTED(MOZ_DISTRIBUTION_ID,"$MOZ_DISTRIBUTION_ID")
AC_SUBST(MOZ_DISTRIBUTION_ID)


dnl ========================================================
dnl Google Play Services, placed here so it can depend on
dnl values set by configure.sh above.
dnl ========================================================

MOZ_ANDROID_GOOGLE_PLAY_SERVICES


dnl ========================================================
dnl = Pango
dnl ========================================================
if test "$MOZ_ENABLE_GTK" -o "$MOZ_ENABLE_QT"
then
    PKG_CHECK_MODULES(_PANGOCHK, pango >= $PANGO_VERSION)

    PKG_CHECK_MODULES(MOZ_PANGO, pango >= $PANGO_VERSION pangoft2 >= $PANGO_VERSION pangocairo >= $PANGO_VERSION)
fi

dnl ========================================================
dnl = GIO and GConf support module
dnl ========================================================

if test "$MOZ_X11"
then
    dnl build the GIO extension by default only when the
    dnl GTK2 toolkit is in use.
    if test "$MOZ_ENABLE_GTK"
    then
        MOZ_ENABLE_GIO=1
        MOZ_ENABLE_GCONF=1
    fi

    dnl ========================================================
    dnl = GIO support module
    dnl ========================================================
    MOZ_ARG_DISABLE_BOOL(gio,
    [  --disable-gio           Disable GIO support],
        MOZ_ENABLE_GIO=,
        MOZ_ENABLE_GIO=force)

    if test "$MOZ_ENABLE_GIO" -a "$MOZ_ENABLE_GTK"
    then
        if test "$MOZ_ENABLE_GTK2"
        then
            PKG_CHECK_MODULES(_GTKCHECK, gtk+-2.0 >= 2.14, ,
                              [AC_MSG_ERROR([* * * Could not find gtk+-2.0 > 2.14. Required for build with gio.])])
        fi
        PKG_CHECK_MODULES(MOZ_GIO, gio-2.0 >= $GIO_VERSION,[
            MOZ_GIO_LIBS=`echo $MOZ_GIO_LIBS | sed 's/-llinc\>//'`
            MOZ_ENABLE_GIO=1
            AC_DEFINE(MOZ_ENABLE_GIO)
        ],[
            if test "$MOZ_ENABLE_GIO" = "force"
            then
                AC_MSG_ERROR([* * * Could not find gio-2.0 >= $GIO_VERSION])
            fi
            MOZ_ENABLE_GIO=
        ])
    fi

    AC_SUBST(MOZ_ENABLE_GIO)

    dnl ========================================================
    dnl = GConf support module
    dnl ========================================================
    MOZ_ARG_DISABLE_BOOL(gconf,
    [  --disable-gconf      Disable Gconf support ],
        MOZ_ENABLE_GCONF=,
        MOZ_ENABLE_GCONF=1)

    if test "$MOZ_ENABLE_GCONF"
    then
        PKG_CHECK_MODULES(MOZ_GCONF, gconf-2.0 >= $GCONF_VERSION gobject-2.0 ,[
            MOZ_GCONF_LIBS=`$PKG_CONFIG --libs gobject-2.0`
            MOZ_ENABLE_GCONF=1
        ],[
            if test -n "$MOZ_ENABLE_GCONF";
            then
                AC_MSG_ERROR([* * * Could not find gconf-2.0 ])
            else
                AC_MSG_WARN([Many automated tests will fail with --disable-gconf. See bug 1167201.])
            fi
        ])
    fi

    if test "$MOZ_ENABLE_GCONF"; then
        AC_DEFINE(MOZ_ENABLE_GCONF)
    fi

    AC_SUBST(MOZ_ENABLE_GCONF)
fi

dnl ========================================================
dnl = libproxy support
dnl ========================================================

if test "$MOZ_ENABLE_GTK" -o "$MOZ_ENABLE_QT"
then
    MOZ_ENABLE_LIBPROXY=

    MOZ_ARG_ENABLE_BOOL(libproxy,
    [  --enable-libproxy         Enable libproxy support ],
    MOZ_ENABLE_LIBPROXY=1,
    MOZ_ENABLE_LIBPROXY=)

    if test "$MOZ_ENABLE_LIBPROXY"
    then
        PKG_CHECK_MODULES(MOZ_LIBPROXY, libproxy-1.0)
        AC_DEFINE(MOZ_ENABLE_LIBPROXY)
    fi
fi
AC_SUBST(MOZ_ENABLE_LIBPROXY)

dnl ========================================================
dnl = GNOME component (mozgnome)
dnl ========================================================

if test "$MOZ_ENABLE_GTK"
then
    MOZ_ENABLE_GNOME_COMPONENT=1
fi
AC_SUBST(MOZ_ENABLE_GNOME_COMPONENT)

dnl ========================================================
dnl = libgnomeui support module
dnl ========================================================

if test "$MOZ_ENABLE_GTK"
then
    MOZ_ARG_ENABLE_BOOL(gnomeui,
    [  --enable-gnomeui        Enable libgnomeui instead of GIO & GTK for icon theme support ],
        MOZ_ENABLE_GNOMEUI=force,
        MOZ_ENABLE_GNOMEUI=)

    if test "$MOZ_ENABLE_GNOMEUI"
    then
        PKG_CHECK_MODULES(MOZ_GNOMEUI, libgnomeui-2.0 >= $GNOMEUI_VERSION,
        [
            MOZ_ENABLE_GNOMEUI=1
        ],[
            if test "$MOZ_ENABLE_GNOMEUI" = "force"
            then
                AC_MSG_ERROR([* * * Could not find libgnomeui-2.0 >= $GNOMEUI_VERSION])
            fi
            MOZ_ENABLE_GNOMEUI=
        ])
    fi

    if test "$MOZ_ENABLE_GNOMEUI"; then
        AC_DEFINE(MOZ_ENABLE_GNOMEUI)
    fi
fi

AC_SUBST(MOZ_ENABLE_GNOMEUI)

dnl ========================================================
dnl = dbus support
dnl ========================================================

if test "$MOZ_ENABLE_GTK" -o "$MOZ_ENABLE_QT"
then
    MOZ_ENABLE_DBUS=1

    MOZ_ARG_DISABLE_BOOL(dbus,
    [  --disable-dbus          Disable dbus support ],
        MOZ_ENABLE_DBUS=,
        MOZ_ENABLE_DBUS=1)

    if test "$MOZ_ENABLE_DBUS"
    then
        PKG_CHECK_MODULES(MOZ_DBUS, dbus-1 >= $DBUS_VERSION)
        PKG_CHECK_MODULES(MOZ_DBUS_GLIB, dbus-glib-1 >= $DBUS_VERSION)
        AC_DEFINE(MOZ_ENABLE_DBUS)
    fi
fi
AC_SUBST(MOZ_ENABLE_DBUS)

dnl ========================================================
dnl = speech-dispatcher support
dnl ========================================================

if test "$MOZ_ENABLE_GTK" -o "$MOZ_ENABLE_QT"
then
    MOZ_SYNTH_SPEECHD=1

    MOZ_ARG_DISABLE_BOOL(synth-speechd,
    [  --disable-synth-speechd Disable speech-dispatcher support ],
        MOZ_SYNTH_SPEECHD=,
        MOZ_SYNTH_SPEECHD=1)
fi
AC_SUBST(MOZ_SYNTH_SPEECHD)

dnl ========================================================
dnl = Enable Android History instead of Places
dnl ========================================================
if test -n "$MOZ_ANDROID_HISTORY"; then
    if test -z "$MOZ_PLACES"; then
        AC_DEFINE(MOZ_ANDROID_HISTORY)
    else
        AC_MSG_ERROR([Cannot use MOZ_ANDROID_HISTORY alongside MOZ_PLACES.])
    fi
fi

dnl ========================================================
dnl = Enable the C++ async pan/zoom code instead of the Java version
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(android-apz,
[  --enable-android-apz      Switch to C++ pan/zoom code],
    MOZ_ANDROID_APZ=1,
    MOZ_ANDROID_APZ=)
if test -n "$MOZ_ANDROID_APZ"; then
     dnl Do this if defined in confvars.sh
     AC_DEFINE(MOZ_ANDROID_APZ)
fi

dnl ========================================================
dnl = Disable WebSMS backend
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(websms-backend,
[  --disable-websms-backend
                           Disable WebSMS backend],
    MOZ_WEBSMS_BACKEND=,
    MOZ_WEBSMS_BACKEND=1)

if test -n "$MOZ_WEBSMS_BACKEND"; then
    AC_DEFINE(MOZ_WEBSMS_BACKEND)
fi

dnl ========================================================
dnl = Enable runtime locale switching on Android
dnl ========================================================
if test -n "$MOZ_LOCALE_SWITCHER"; then
    AC_DEFINE(MOZ_LOCALE_SWITCHER)
fi

dnl ========================================================
dnl = Enable system download manager on Android
dnl ========================================================
if test -n "$MOZ_ANDROID_DOWNLOADS_INTEGRATION"; then
    AC_DEFINE(MOZ_ANDROID_DOWNLOADS_INTEGRATION)
fi

dnl ========================================================
dnl = Enable NFC permission on Android
dnl ========================================================
if test -n "$MOZ_ANDROID_BEAM"; then
    AC_DEFINE(MOZ_ANDROID_BEAM)
fi

dnl ========================================================
dnl = Include Search Activity on Android
dnl ========================================================
if test -n "$MOZ_ANDROID_SEARCH_ACTIVITY"; then
    AC_DEFINE(MOZ_ANDROID_SEARCH_ACTIVITY)
fi

dnl ========================================================
dnl = Include Reading List service on Android
dnl ========================================================
if test -n "$MOZ_ANDROID_READING_LIST_SERVICE"; then
    AC_DEFINE(MOZ_ANDROID_READING_LIST_SERVICE)
fi

dnl ========================================================
dnl = Include Mozilla Location Service Stumbler on Android
dnl ========================================================
if test -n "$MOZ_ANDROID_MLS_STUMBLER"; then
    AC_DEFINE(MOZ_ANDROID_MLS_STUMBLER)
fi

dnl ========================================================
dnl = Include share overlay on Android
dnl ========================================================
if test -n "$MOZ_ANDROID_SHARE_OVERLAY"; then
    AC_DEFINE(MOZ_ANDROID_SHARE_OVERLAY)
fi

dnl ========================================================
dnl = Show Firefox Account profile details on Android
dnl ========================================================
if test -n "$MOZ_ANDROID_FIREFOX_ACCOUNT_PROFILES"; then
    AC_DEFINE(MOZ_ANDROID_FIREFOX_ACCOUNT_PROFILES)
fi

dnl = Include Tab Queue on Android
dnl = Temporary build flag to allow development in Nightly
dnl ========================================================
if test -n "$MOZ_ANDROID_TAB_QUEUE"; then
    AC_DEFINE(MOZ_ANDROID_TAB_QUEUE)
fi

dnl ========================================================
dnl = Include install tracking on Android
dnl ========================================================
if test -n "$MOZ_INSTALL_TRACKING"; then
    AC_DEFINE(MOZ_INSTALL_TRACKING)
fi

dnl ========================================================
dnl = Include Switchboard A/B framework on Android
dnl ========================================================
if test -n "$MOZ_SWITCHBOARD"; then
    AC_DEFINE(MOZ_SWITCHBOARD)
fi

dnl ========================================================
dnl = Enable IPDL's "expensive" unit tests
dnl ========================================================
MOZ_IPDL_TESTS=

MOZ_ARG_ENABLE_BOOL(ipdl-tests,
[  --enable-ipdl-tests     Enable expensive IPDL tests],
    MOZ_IPDL_TESTS=1,
    MOZ_IPDL_TESTS=)

if test -n "$MOZ_IPDL_TESTS"; then
    AC_DEFINE(MOZ_IPDL_TESTS)
fi

AC_SUBST(MOZ_IPDL_TESTS)

dnl ========================================================
dnl = Disable building dbm
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(dbm,
[  --disable-dbm           Disable building dbm],
    NSS_DISABLE_DBM=1,
    NSS_DISABLE_DBM=)

dnl ========================================================
dnl accessibility support on by default on all platforms
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(accessibility,
[  --disable-accessibility Disable accessibility support],
    ACCESSIBILITY=,
    ACCESSIBILITY=1 )
if test "$ACCESSIBILITY"; then
    case "$target" in
    *-mingw*)
        if test -z "$MIDL"; then
            if test "$GCC" != "yes"; then
                AC_MSG_ERROR([MIDL could not be found. Building accessibility without MIDL is not supported.])
            else
                AC_MSG_ERROR([You have accessibility enabled, but widl could not be found. Add --disable-accessibility to your mozconfig or install widl. See https://developer.mozilla.org/en-US/docs/Cross_Compile_Mozilla_for_Mingw32 for details.])
            fi
        fi
    esac
    AC_DEFINE(ACCESSIBILITY)
fi

dnl ========================================================
dnl Accessibility is required for the linuxgl widget
dnl backend
dnl ========================================================
if test "${MOZ_WIDGET_TOOLKIT}" = "linuxgl" -a "$ACCESSIBILITY" != "1"; then
    AC_MSG_ERROR(["Accessibility is required for the linuxgl widget backend"])
fi

dnl Turn off webrtc for OS's we don't handle yet, but allow
dnl --enable-webrtc to override.  Can disable for everything in
dnl the master list above.
if test -n "$MOZ_WEBRTC"; then
    case "$target" in
    *-linux*|*-mingw*|*-darwin*|*-android*|*-linuxandroid*|*-dragonfly*|*-freebsd*|*-netbsd*|*-openbsd*)
        dnl Leave enabled
        ;;
    *)
        dnl default to disabled for all others
        MOZ_WEBRTC=
        ;;
    esac
fi

AC_TRY_COMPILE([#include <linux/ethtool.h>],
               [ struct ethtool_cmd cmd; cmd.speed_hi = 0; ],
               MOZ_WEBRTC_HAVE_ETHTOOL_SPEED_HI=1)

AC_SUBST(MOZ_WEBRTC_HAVE_ETHTOOL_SPEED_HI)

# target_arch is from {ia32|x64|arm|ppc}
case "$CPU_ARCH" in
x86_64 | arm | x86 | ppc* | ia64)
    :
    ;;
*)
# unsupported arch for webrtc
    MOZ_WEBRTC=
    ;;

esac

dnl ========================================================
dnl = Disable WebRTC code
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(webrtc,
[  --disable-webrtc        Disable support for WebRTC],
    MOZ_WEBRTC=,
    MOZ_WEBRTC=1)

if test -n "$MOZ_WEBRTC"; then
    AC_DEFINE(MOZ_WEBRTC)
    dnl MOZ_WEBRTC_ASSERT_ALWAYS turns on a number of safety asserts in
    dnl opt/production builds (via MOZ_CRASH())
    AC_DEFINE(MOZ_WEBRTC_ASSERT_ALWAYS)
    MOZ_RAW=1
    MOZ_VPX=1
    MOZ_VPX_ERROR_CONCEALMENT=1

dnl enable once Signaling lands
    MOZ_WEBRTC_SIGNALING=1
    AC_DEFINE(MOZ_WEBRTC_SIGNALING)
dnl enable once PeerConnection lands
    MOZ_PEERCONNECTION=1
    AC_DEFINE(MOZ_PEERCONNECTION)
    MOZ_SCTP=1
    MOZ_SRTP=1
    AC_DEFINE(MOZ_SCTP)
    AC_DEFINE(MOZ_SRTP)
    if test -n "$MOZ_X11"; then
      MOZ_WEBRTC_X11_LIBS="-lXext -lXdamage -lXfixes -lXcomposite"
    fi
else
    MOZ_SYNTH_PICO=
fi

dnl ========================================================
dnl = Force hardware AEC, disable webrtc.org AEC
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(hardware-aec-ns,
[  --enable-hardware-aec-ns   Enable support for hardware AEC and noise suppression],
    MOZ_WEBRTC_HARDWARE_AEC_NS=1,
    MOZ_WEBRTC_HARDWARE_AEC_NS=)

if test -n "$MOZ_WEBRTC_HARDWARE_AEC_NS"; then
    AC_DEFINE(MOZ_WEBRTC_HARDWARE_AEC_NS)
fi

AC_SUBST(MOZ_WEBRTC)
AC_SUBST(MOZ_WEBRTC_LEAKING_TESTS)
AC_SUBST(MOZ_WEBRTC_SIGNALING)
AC_SUBST(MOZ_PEERCONNECTION)
AC_SUBST(MOZ_WEBRTC_ASSERT_ALWAYS)
AC_SUBST(MOZ_WEBRTC_HARDWARE_AEC_NS)
AC_SUBST(MOZ_SCTP)
AC_SUBST(MOZ_SRTP)
AC_SUBST_LIST(MOZ_WEBRTC_X11_LIBS)

dnl Use integers over floats for audio on B2G and Android
dnl (regarless of the CPU architecture, because audio
dnl backends for those platforms don't support floats. We also
dnl use integers on ARM with other OS, because it's more efficient.
if test "$OS_TARGET" = "Android" -o "$CPU_ARCH" = "arm"; then
    MOZ_SAMPLE_TYPE_S16=1
    AC_DEFINE(MOZ_SAMPLE_TYPE_S16)
    AC_SUBST(MOZ_SAMPLE_TYPE_S16)
else
    MOZ_SAMPLE_TYPE_FLOAT32=1
    AC_DEFINE(MOZ_SAMPLE_TYPE_FLOAT32)
    AC_SUBST(MOZ_SAMPLE_TYPE_FLOAT32)
fi

dnl ========================================================
dnl = Disable Speech API pocketsphinx backend
dnl ========================================================
if test -n "$MOZ_WEBSPEECH_POCKETSPHINX"; then
    AC_DEFINE(MOZ_WEBSPEECH_POCKETSPHINX)
fi

AC_SUBST(MOZ_WEBSPEECH_POCKETSPHINX)

dnl ========================================================
dnl = Disable Speech API code
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(webspeech,
[  --disable-webspeech        Disable support for HTML Speech API],
    MOZ_WEBSPEECH=,
    MOZ_WEBSPEECH=1)

if test -n "$MOZ_WEBSPEECH"; then
    AC_DEFINE(MOZ_WEBSPEECH)
fi

AC_SUBST(MOZ_WEBSPEECH)

dnl ========================================================
dnl = Disable Speech API test backend
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(webspeechtestbackend,
[  --disable-webspeechtestbackend        Disable support for HTML Speech API Test Backend],
    MOZ_WEBSPEECH_TEST_BACKEND=,
    MOZ_WEBSPEECH_TEST_BACKEND=1)

if test -z "$MOZ_WEBSPEECH"; then
MOZ_WEBSPEECH_TEST_BACKEND=
fi

if test -n "$MOZ_WEBSPEECH_TEST_BACKEND"; then
    AC_DEFINE(MOZ_WEBSPEECH_TEST_BACKEND)
fi

AC_SUBST(MOZ_WEBSPEECH_TEST_BACKEND)

dnl ========================================================
dnl = Disable Speech API models
dnl ========================================================
if test -z "$MOZ_WEBSPEECH"; then
MOZ_WEBSPEECH_MODELS=
fi

if test -n "$MOZ_WEBSPEECH_MODELS"; then
    AC_DEFINE(MOZ_WEBSPEECH_MODELS)
fi

AC_SUBST(MOZ_WEBSPEECH_MODELS)

dnl ========================================================
dnl = Enable Raw Codecs
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(raw,
[  --enable-raw           Enable support for RAW media],
    MOZ_RAW=1,
    MOZ_RAW=)

if test -n "$MOZ_RAW"; then
    AC_DEFINE(MOZ_RAW)
fi

AC_SUBST(MOZ_RAW)

dnl Checks for __attribute__(aligned()) directive need by libogg
AC_CACHE_CHECK([__attribute__ ((aligned ())) support],
    [ac_cv_c_attribute_aligned],
    [ac_cv_c_attribute_aligned=0
     CFLAGS_save="${CFLAGS}"
     CFLAGS="${CFLAGS} -Werror"
     for ac_cv_c_attr_align_try in 64 32 16 8; do
       echo "trying $ac_cv_c_attr_align_try"
       AC_TRY_COMPILE([],
                      [static char c __attribute__ ((aligned(${ac_cv_c_attr_align_try}))) = 0; return c;],
                      [ac_cv_c_attribute_aligned="${ac_cv_c_attr_align_try}"])
       if test "$ac_cv_c_attribute_aligned" != 0; then
         break;
       fi
     done
       CFLAGS="${CFLAGS_save}"])
if test "${ac_cv_c_attribute_aligned}" != "0"; then
  AC_DEFINE_UNQUOTED([ATTRIBUTE_ALIGNED_MAX],
                     [${ac_cv_c_attribute_aligned}],[Maximum supported data alignment])
fi

dnl ========================================================
dnl = Disable VP8 decoder support
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(webm,
[  --disable-webm          Disable support for WebM media (VP8 video and Vorbis audio)],
    MOZ_WEBM=,
    MOZ_WEBM=1)

if test -n "$MOZ_WEBM"; then
    AC_DEFINE(MOZ_WEBM)
    MOZ_VPX=1
fi;

dnl ========================================================
dnl = Apple platform decoder support
dnl ========================================================
if test "$MOZ_WIDGET_TOOLKIT" = "cocoa"; then
  MOZ_APPLEMEDIA=1
fi

if test "$COMPILE_ENVIRONMENT"; then
if test -n "$MOZ_APPLEMEDIA"; then
  AC_DEFINE(MOZ_APPLEMEDIA)
  # hack in frameworks for fmp4 - see bug 1029974
  # We load VideoToolbox and CoreMedia dynamically, so they don't appear here.
  LDFLAGS="$LDFLAGS -framework AudioToolbox"
  dnl Verify CoreMedia is available.
  AC_CHECK_HEADER([CoreMedia/CoreMedia.h], [],
    [AC_MSG_ERROR([MacOS X 10.7 SDK or later is required])])
fi
fi # COMPILE_ENVIRONMENT

dnl ========================================================
dnl = DirectShow support
dnl ========================================================
if test "$OS_ARCH" = "WINNT"; then
    dnl Enable DirectShow support by default.
    MOZ_DIRECTSHOW=1
fi

MOZ_ARG_DISABLE_BOOL(directshow,
[  --disable-directshow  Disable support for DirectShow],
    MOZ_DIRECTSHOW=,
    MOZ_DIRECTSHOW=1)

if test -n "$MOZ_DIRECTSHOW"; then
    AC_DEFINE(MOZ_DIRECTSHOW)
fi;

dnl ========================================================
dnl = Windows Media Foundation support
dnl ========================================================
if test "$OS_ARCH" = "WINNT"; then
    dnl Enable Windows Media Foundation support by default.
    dnl Note our minimum SDK version is Windows 7 SDK, so we are (currently)
    dnl guaranteed to have a recent-enough SDK to build WMF.
    MOZ_WMF=1
fi

MOZ_ARG_DISABLE_BOOL(wmf,
[  --disable-wmf  Disable support for Windows Media Foundation],
    MOZ_WMF=,
    MOZ_WMF=1)

if test -n "$MOZ_WMF"; then
    AC_DEFINE(MOZ_WMF)
fi;

dnl ========================================================
dnl FFmpeg H264/AAC Decoding Support
dnl ========================================================
case "$OS_TARGET" in
WINNT|Darwin|Android)
    ;;
*)
    MOZ_FFMPEG=1
    ;;
esac

MOZ_ARG_DISABLE_BOOL(ffmpeg,
[  --disable-ffmpeg         Disable FFmpeg for fragmented H264/AAC decoding],
    MOZ_FFMPEG=,
    MOZ_FFMPEG=1
)

if test -n "$MOZ_FFMPEG"; then
    AC_DEFINE(MOZ_FFMPEG)
fi;

dnl ========================================================
dnl = Built-in fragmented MP4 support.
dnl ========================================================

if test "$OS_TARGET" = Android -a -z "$gonkdir"; then
    MOZ_FMP4=1
fi

if test -n "$MOZ_WMF" -o -n "$MOZ_FFMPEG" -o -n "$MOZ_APPLEMEDIA"; then
    dnl Enable fragmented MP4 parser on Windows by default.
    dnl We will also need to enable it on other platforms as we implement
    dnl platform decoder support there too.
    MOZ_FMP4=1
fi

MOZ_ARG_DISABLE_BOOL(fmp4,
[  --disable-fmp4  Disable support for in built Fragmented MP4 parsing],
    MOZ_FMP4=,
    MOZ_FMP4=1)

if test -n "$MOZ_FFMPEG" -a -z "$MOZ_FMP4"; then
    AC_MSG_ERROR([Fragmented MP4 support must be enabled if using FFMPEG])
fi

if test -n "$MOZ_FMP4"; then
    AC_DEFINE(MOZ_FMP4)
    MOZ_EME=1
fi;

if test x"$MOZ_WIDGET_TOOLKIT" = x"gonk" -a -n "$MOZ_FMP4" -a -n "$ANDROID_VERSION"; then
    # we now know for sure that $ANDROID_VERSION is not an empty string!
    if test "$ANDROID_VERSION" -ge "18"; then
        MOZ_GONK_MEDIACODEC=1
        AC_SUBST(MOZ_GONK_MEDIACODEC)
    fi
fi


dnl ========================================================
dnl = EME support
dnl ========================================================

MOZ_ARG_ENABLE_STRING(eme,
[  --enable-eme[=adobe]  Enable support for Encrypted Media Extensions  ],
    MOZ_EME_ARGS=$enableval)

if test "$MOZ_EME_ARGS"; then
    if test "$MOZ_EME_ARGS" = "no"; then
        dnl EME explicitly disabled with --disable-eme
        MOZ_EME=
    elif test "$MOZ_EME_ARGS" = "yes"; then
        dnl EME explicitly enabled with --enable-eme
        MOZ_EME=1
    else
        dnl EME explicitly enabled with --enable-eme=<args>
        MOZ_EME=1
        MOZ_EME_MODULES=`echo $MOZ_EME_ARGS | sed -e 's/,/ /g'`
    fi
fi

AC_SUBST_SET(MOZ_EME_MODULES)
if test -n "$MOZ_EME"; then
    if test -z "$MOZ_FMP4"; then
        AC_MSG_ERROR([Encrypted Media Extension support requires Fragmented MP4 support])
    fi
    AC_DEFINE(MOZ_EME)
fi

dnl ========================================================
dnl = Enable media plugin support
dnl ========================================================
if test "$OS_TARGET" = Android -a x"$MOZ_WIDGET_TOOLKIT" != x"gonk"; then
  dnl Enable support on android by default
  MOZ_ANDROID_OMX=1
fi

MOZ_ARG_ENABLE_BOOL(android-omx,
[  --enable-android-omx  Enable support for Android OMX media backend],
    MOZ_ANDROID_OMX=1,
    MOZ_ANDROID_OMX=)

if test -n "$MOZ_ANDROID_OMX"; then
  AC_DEFINE(MOZ_ANDROID_OMX)
fi

dnl ========================================================
dnl = Enable getUserMedia support
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(media-navigator,
[  --enable-media-navigator  Enable support for getUserMedia],
    MOZ_MEDIA_NAVIGATOR=1,
    MOZ_MEDIA_NAVIGATOR=)

if test -n "$MOZ_MEDIA_NAVIGATOR"; then
  AC_DEFINE(MOZ_MEDIA_NAVIGATOR)
fi

dnl ========================================================
dnl = Enable building OMX media plugin (B2G or Android)
dnl ========================================================
if test "$OS_TARGET" = Android -a x"$MOZ_WIDGET_TOOLKIT" != x"gonk"; then
  dnl Enable support on android by default
  MOZ_OMX_PLUGIN=1
fi

MOZ_ARG_ENABLE_BOOL(omx-plugin,
[  --enable-omx-plugin      Enable building OMX plugin (B2G)],
    MOZ_OMX_PLUGIN=1,
    MOZ_OMX_PLUGIN=)

if test -n "$MOZ_OMX_PLUGIN"; then
    if test "$OS_TARGET" = "Android"; then
        dnl Only allow building OMX plugin on Gonk (B2G) or Android
        AC_DEFINE(MOZ_OMX_PLUGIN)
    else
       dnl fail if we're not building on Gonk or Android
       AC_MSG_ERROR([OMX media plugin can only be built on B2G or Android])
    fi
fi

dnl system libvpx Support
dnl ========================================================
MOZ_ARG_WITH_BOOL(system-libvpx,
[  --with-system-libvpx    Use system libvpx (located with pkgconfig)],
    MOZ_NATIVE_LIBVPX=1)

MOZ_LIBVPX_CFLAGS=
MOZ_LIBVPX_LIBS=

if test -n "$MOZ_VPX"; then
    AC_DEFINE(MOZ_VPX)
    if test -n "$MOZ_VPX_ERROR_CONCEALMENT" ; then
        AC_DEFINE(MOZ_VPX_ERROR_CONCEALMENT)
    fi

    _SAVE_CFLAGS=$CFLAGS
    _SAVE_LIBS=$LIBS
    if test -n "$MOZ_NATIVE_LIBVPX"; then
        dnl ============================
        dnl === libvpx Version check ===
        dnl ============================
        dnl Check to see if we have a system libvpx package.
        PKG_CHECK_MODULES(MOZ_LIBVPX, vpx >= 1.3.0)

        CFLAGS="$CFLAGS $MOZ_LIBVPX_CFLAGS"
        LIBS="$LIBS $MOZ_LIBVPX_LIBS"

        MOZ_CHECK_HEADER([vpx/vpx_decoder.h], [],
         [AC_MSG_ERROR([Couldn't find vpx/vpx_decoder.h which is required for build with system libvpx. Use --without-system-libvpx to build with in-tree libvpx.])])

        AC_CHECK_LIB(vpx, vpx_codec_dec_init_ver, [],
         [AC_MSG_ERROR([--with-system-libvpx requested but symbol vpx_codec_dec_init_ver not found])])

        MOZ_CHECK_HEADER([vpx_mem/vpx_mem.h],
         [AC_CHECK_FUNC(vpx_mem_set_functions)])
        if test "$ac_cv_header_vpx_mem_vpx_mem_h" = no -o \
                "$ac_cv_func_vpx_mem_set_functions" = no; then
            AC_DEFINE(MOZ_VPX_NO_MEM_REPORTING)
        fi
    fi
    CFLAGS=$_SAVE_CFLAGS
    LIBS=$_SAVE_LIBS
fi

AC_SUBST(MOZ_NATIVE_LIBVPX)
AC_SUBST_LIST(MOZ_LIBVPX_CFLAGS)
AC_SUBST_LIST(MOZ_LIBVPX_LIBS)

if test "$MOZ_WEBM"; then
    if test "$MOZ_SAMPLE_TYPE_FLOAT32"; then
        MOZ_VORBIS=1
    else
        MOZ_TREMOR=1
    fi
fi

if test -n "$MOZ_VPX" -a -z "$MOZ_NATIVE_LIBVPX"; then

    dnl Detect if we can use an assembler to compile optimized assembly for libvpx.
    dnl We currently require yasm on all x86 platforms and require yasm 1.1.0 on Win32.
    dnl We currently require gcc on all arm platforms.
    VPX_AS=$YASM
    VPX_ASM_SUFFIX=asm
    VPX_NEED_OBJ_INT_EXTRACT=

    dnl See if we have assembly on this platform.
    case "$OS_ARCH:$CPU_ARCH" in
    Darwin:x86)
      VPX_ASFLAGS="-f macho32 -rnasm -pnasm -DPIC"
      VPX_X86_ASM=1
    ;;
    Darwin:x86_64)
      VPX_ASFLAGS="-f macho64 -rnasm -pnasm -DPIC"
      VPX_X86_ASM=1
    ;;
    WINNT:x86_64)
      VPX_ASFLAGS="-f x64 -rnasm -pnasm"
      VPX_X86_ASM=1
    ;;
    WINNT:x86)
      dnl Check for yasm 1.1 or greater.
      if test -n "$COMPILE_ENVIRONMENT" -a -z "$YASM"; then
        AC_MSG_ERROR([yasm 1.1 or greater is required to build libvpx on Win32, but it appears not to be installed.  Install it (included in MozillaBuild 1.5.1 and newer) or configure with --disable-webm (which disables the WebM video format). See https://developer.mozilla.org/en/YASM for more details.])
      elif test -n "$COMPILE_ENVIRONMENT" -a "$_YASM_MAJOR_VERSION" -lt "1" -o \( "$_YASM_MAJOR_VERSION" -eq "1" -a "$_YASM_MINOR_VERSION" -lt "1" \) ; then
        AC_MSG_ERROR([yasm 1.1 or greater is required to build libvpx on Win32, but you appear to have version $_YASM_MAJOR_VERSION.$_YASM_MINOR_VERSION.  Upgrade to the newest version (included in MozillaBuild 1.5.1 and newer) or configure with --disable-webm (which disables the WebM video format). See https://developer.mozilla.org/en/YASM for more details.])
      else
        VPX_ASFLAGS="-f win32 -rnasm -pnasm -DPIC"
        VPX_X86_ASM=1
        dnl The encoder needs obj_int_extract to get asm offsets.
      fi # COMPILE_ENVIRONMENT and others
    ;;
    *:arm*)
      if test -n "$GNU_AS" ; then
        VPX_AS=$AS
        dnl These flags are a lie; they're just used to enable the requisite
        dnl opcodes; actual arch detection is done at runtime.
        VPX_ASFLAGS="-march=armv7-a -mfpu=neon"
        VPX_AS_CONVERSION='$(PERL) $(topsrcdir)/media/libvpx/build/make/ads2gas.pl'
        VPX_ASM_SUFFIX="$ASM_SUFFIX"
        VPX_ARM_ASM=1
        dnl Building with -mfpu=neon requires either the "softfp" or the
        dnl "hardfp" ABI. Depending on the compiler's default target, and the
        dnl CFLAGS, the default ABI might be neither, in which case it is the
        dnl "softfloat" ABI.
        dnl The "softfloat" ABI is binary-compatible with the "softfp" ABI, so
        dnl we can safely mix code built with both ABIs. So, if we detect
        dnl that compiling uses the "softfloat" ABI, force the use of the
        dnl "softfp" ABI instead.
        dnl Confusingly, the __SOFTFP__ preprocessor variable indicates the
        dnl "softfloat" ABI, not the "softfp" ABI.
        dnl Note: VPX_ASFLAGS is also used in CFLAGS.
        AC_TRY_COMPILE([],
          [#ifndef __SOFTFP__
           #error "compiler target supports -mfpu=neon, so we don't have to add extra flags"
           #endif],
           VPX_ASFLAGS="$VPX_ASFLAGS -mfloat-abi=softfp"
           )
      fi
    ;;
    *:x86)
      if $CC -E -dM -</dev/null | grep -q __ELF__; then
        VPX_ASFLAGS="-f elf32 -rnasm -pnasm -DPIC"
        VPX_X86_ASM=1
      fi
    ;;
    *:x86_64)
      if $CC -E -dM -</dev/null | grep -q __ELF__; then
        VPX_ASFLAGS="-f elf64 -rnasm -pnasm -DPIC"
        VPX_X86_ASM=1
      fi
    ;;
    esac

    if test -n "$COMPILE_ENVIRONMENT" -a -n "$VPX_X86_ASM" -a -z "$VPX_AS"; then
      AC_MSG_ERROR([yasm is a required build tool for this architecture when webm is enabled. You may either install yasm or --disable-webm (which disables the WebM video format). See https://developer.mozilla.org/en/YASM for more details.])
    fi # COMPILE_ENVIRONMENT and others

    if test -z "$GNU_CC" -a -z "$INTEL_CC" -a -z "$CLANG_CC" ; then
      dnl We prefer to get asm offsets using inline assembler, which the above
      dnl compilers can do. When we're not using one of those, we have to fall
      dnl back to obj_int_extract, which reads them from a compiled object
      dnl file. Unfortunately, that only works if we're compiling on a system
      dnl with the header files for the appropriate object file format.
      VPX_NEED_OBJ_INT_EXTRACT=1
    fi

    if test -n "$VPX_X86_ASM"; then
      AC_DEFINE(VPX_X86_ASM)
    elif test -n "$VPX_ARM_ASM"; then
      AC_DEFINE(VPX_ARM_ASM)
    else
      AC_MSG_WARN([No assembler or assembly support for libvpx. Using unoptimized C routines.])
    fi

    dnl native libvpx no longer has vpx_mem_set_functions
    AC_DEFINE(MOZ_VPX_NO_MEM_REPORTING)
fi

dnl ========================================================
dnl = Disable Wave decoder support
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(wave,
[  --disable-wave          Disable Wave decoder support],
    MOZ_WAVE=,
    MOZ_WAVE=1)

if test -n "$MOZ_WAVE"; then
    AC_DEFINE(MOZ_WAVE)
fi

dnl ========================================================
dnl = Handle dependent MEDIA defines
dnl ========================================================

if test -n "$MOZ_VORBIS" -a -n "$MOZ_TREMOR"; then
    AC_MSG_ERROR([MOZ_VORBIS and MOZ_TREMOR are mutually exclusive!  The build system should not allow them both to be set, but they are.  Please file a bug at https://bugzilla.mozilla.org/])
fi

if test -n "$MOZ_VORBIS"; then
    AC_DEFINE(MOZ_VORBIS)
fi

if test -n "$MOZ_TREMOR"; then
    AC_DEFINE(MOZ_TREMOR)
    # Tremor doesn't have an encoder.
    MOZ_WEBM_ENCODER=
fi

if test -n "$MOZ_WEBM_ENCODER"; then
    AC_DEFINE(MOZ_WEBM_ENCODER)
fi
AC_SUBST(MOZ_WEBM_ENCODER)

dnl ==================================
dnl = Check alsa availability on Linux
dnl ==================================

dnl If using Linux, ensure that the alsa library is available
if test "$OS_TARGET" = "Linux"; then
    MOZ_ALSA=1
fi

MOZ_ARG_ENABLE_BOOL(alsa,
[  --enable-alsa          Enable Alsa support (default on Linux)],
   MOZ_ALSA=1,
   MOZ_ALSA=)

if test -n "$MOZ_ALSA"; then
    PKG_CHECK_MODULES(MOZ_ALSA, alsa, ,
         [echo "$MOZ_ALSA_PKG_ERRORS"
          AC_MSG_ERROR([Need alsa for audio output on Linux. (On Ubuntu, you might try installing the package libasound2-dev.)])])
fi

AC_SUBST(MOZ_ALSA)

dnl ========================================================
dnl = Disable PulseAudio
dnl ========================================================

dnl If using Linux, ensure that the PA library is available
case "$OS_TARGET" in
WINNT|Darwin|Android|OpenBSD)
    ;;
*)
    if test -z "$MOZ_B2G"; then
        MOZ_PULSEAUDIO=1
    fi
    ;;
esac

MOZ_ARG_DISABLE_BOOL(pulseaudio,
[  --disable-pulseaudio          Disable PulseAudio support],
   MOZ_PULSEAUDIO=,
   MOZ_PULSEAUDIO=1)

if test -n "$MOZ_PULSEAUDIO"; then
    if test -z "$gonkdir"; then
        PKG_CHECK_MODULES(MOZ_PULSEAUDIO, libpulse, ,
             [echo "$MOZ_PULSEAUDIO_PKG_ERRORS"
              AC_MSG_ERROR([pulseaudio audio backend requires libpulse development package])])
    else
        MOZ_PULSEAUDIO_CFLAGS="-I$gonkdir/external/pulseaudio/pulseaudio/src"
    fi
fi

AC_SUBST(MOZ_PULSEAUDIO)

dnl ========================================================
dnl = Enable GStreamer
dnl ========================================================
case "$OS_TARGET" in
WINNT|Darwin|Android)
    ;;
*)
    MOZ_GSTREAMER=1
    GST_API_VERSION=0.10
    ;;
esac

MOZ_ARG_ENABLE_STRING(gstreamer,
[  --enable-gstreamer[=0.10]           Enable GStreamer support],
[ MOZ_GSTREAMER=1
  # API version, eg 0.10, 1.0 etc
  if test -z "$enableval" -o "$enableval" = "yes"; then
    GST_API_VERSION=0.10
  elif test "$enableval" = "no"; then
    MOZ_GSTREAMER=
  else
    GST_API_VERSION=$enableval
  fi],
)

if test -n "$MOZ_GSTREAMER"; then
    # core/base release number
    if test "$GST_API_VERSION" = "1.0"; then
      GST_VERSION=1.0
    else
      GST_VERSION=0.10.25
    fi

    PKG_CHECK_MODULES(GSTREAMER,
                      gstreamer-$GST_API_VERSION >= $GST_VERSION
                      gstreamer-app-$GST_API_VERSION
                      gstreamer-plugins-base-$GST_API_VERSION,
                      [_HAVE_GSTREAMER=1],
                      [_HAVE_GSTREAMER=])
    if test -z "$_HAVE_GSTREAMER"; then
        AC_MSG_ERROR([gstreamer and gstreamer-plugins-base development packages are needed to build gstreamer backend. Install them or disable gstreamer support with --disable-gstreamer])
    fi

    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS $GSTREAMER_LIBS -lgstvideo-$GST_API_VERSION"
    AC_TRY_LINK(,[return 0;],_HAVE_LIBGSTVIDEO=1,_HAVE_LIBGSTVIDEO=)
    if test -n "$_HAVE_LIBGSTVIDEO" ; then
        GSTREAMER_LIBS="$GSTREAMER_LIBS -lgstvideo-$GST_API_VERSION"
    else
        AC_MSG_ERROR([gstreamer-plugins-base found, but no libgstvideo. Something has gone terribly wrong. Try reinstalling gstreamer-plugins-base; failing that, disable the gstreamer backend with --disable-gstreamer.])
    fi
    LDFLAGS=$_SAVE_LDFLAGS
fi

AC_SUBST(MOZ_GSTREAMER)
AC_SUBST(GST_API_VERSION)

if test -n "$MOZ_GSTREAMER"; then
     AC_DEFINE(MOZ_GSTREAMER)
     AC_DEFINE_UNQUOTED(GST_API_VERSION, "$GST_API_VERSION")
fi


dnl ========================================================
dnl Permissions System
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(permissions,
[  --disable-permissions   Disable permissions (popup and cookie blocking)],
    MOZ_PERMISSIONS=,
    MOZ_PERMISSIONS=1
)

AC_SUBST(MOZ_PERMISSIONS)
if test -n "$MOZ_PERMISSIONS"; then
    AC_DEFINE(MOZ_PERMISSIONS)
fi

dnl ========================================================
dnl Child permissions, currently only used for b2g
dnl ========================================================
if test -n "$MOZ_B2G"; then
    if test -n "$MOZ_PERMISSIONS"; then
        MOZ_CHILD_PERMISSIONS=1
        AC_DEFINE(MOZ_CHILD_PERMISSIONS)
    else
        AC_MSG_ERROR([You need to enable MOZ_PERMISSIONS for MOZ_CHILD_PERMISSIONS])
    fi
fi
AC_SUBST(MOZ_CHILD_PERMISSIONS)

dnl ========================================================
dnl NegotiateAuth
dnl ========================================================

MOZ_ARG_DISABLE_BOOL(negotiateauth,
[  --disable-negotiateauth Disable GSS-API negotiation ],
    MOZ_AUTH_EXTENSION=,
    MOZ_AUTH_EXTENSION=1 )

if test -n "$MOZ_IOS" -a -n "$MOZ_AUTH_EXTENSION"; then
   AC_MSG_ERROR([negotiateauth is not supported on iOS.])
fi

dnl ========================================================
dnl Pref extensions (autoconfig)
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(pref-extensions,
[  --disable-pref-extensions
                          Disable pref extensions such as autoconfig],
  MOZ_PREF_EXTENSIONS=,
  MOZ_PREF_EXTENSIONS=1 )

dnl ========================================================
dnl Searching of system directories for extensions.
dnl Note: this switch is meant to be used for test builds
dnl whose behavior should not depend on what happens to be
dnl installed on the local machine.
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(system-extension-dirs,
[  --disable-system-extension-dirs
                          Disable searching system- and account-global
                          directories for extensions of any kind; use
                          only profile-specific extension directories],
  ENABLE_SYSTEM_EXTENSION_DIRS=,
  ENABLE_SYSTEM_EXTENSION_DIRS=1 )
if test "$ENABLE_SYSTEM_EXTENSION_DIRS"; then
  AC_DEFINE(ENABLE_SYSTEM_EXTENSION_DIRS)
fi

dnl ========================================================
dnl = Universalchardet
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(universalchardet,
[  --disable-universalchardet
                          Disable universal encoding detection],
  MOZ_UNIVERSALCHARDET=,
  MOZ_UNIVERSALCHARDET=1 )

if test -n "${JAVA_BIN_PATH}"; then
  dnl Look for javac and jar in the specified path.
  JAVA_PATH="$JAVA_BIN_PATH"
else
  dnl No path specified, so look for javac and jar in $JAVA_HOME & $PATH.
  JAVA_PATH="$JAVA_HOME/bin:$PATH"
fi

MOZ_PATH_PROG(JAVA, java, :, [$JAVA_PATH])
MOZ_PATH_PROG(JAVAC, javac, :, [$JAVA_PATH])
MOZ_PATH_PROG(JAVAH, javah, :, [$JAVA_PATH])
MOZ_PATH_PROG(JAR, jar, :, [$JAVA_PATH])
MOZ_PATH_PROG(JARSIGNER, jarsigner, :, [$JAVA_PATH])
MOZ_PATH_PROG(KEYTOOL, keytool, :, [$JAVA_PATH])

if test -n "${JAVA_BIN_PATH}" -o \
  \( "$OS_TARGET" = Android -a x"$MOZ_WIDGET_TOOLKIT" != x"gonk" \); then
  if test -z "$JAVA" -o "$JAVA" = ":"; then
    AC_MSG_ERROR([The program java was not found.  Set \$JAVA_HOME to your Java SDK directory or use --with-java-bin-path={java-bin-dir}])
  fi
  if test -z "$JAVAC" -o "$JAVAC" = ":"; then
    AC_MSG_ERROR([The program javac was not found.  Set \$JAVA_HOME to your Java SDK directory or use --with-java-bin-path={java-bin-dir}])
  fi
  if test -z "$JAVAH" -o "$JAVAH" = ":"; then
    AC_MSG_ERROR([The program javah was not found.  Set \$JAVA_HOME to your Java SDK directory or use --with-java-bin-path={java-bin-dir}])
  fi
  if test -z "$JAR" -o "$JAR" = ":"; then
    AC_MSG_ERROR([The program jar was not found.  Set \$JAVA_HOME to your Java SDK directory or use --with-java-bin-path={java-bin-dir}])
  fi
  if test -z "$JARSIGNER" -o "$JARSIGNER" = ":"; then
    AC_MSG_ERROR([The program jarsigner was not found.  Set \$JAVA_HOME to your Java SDK directory or use --with-java-bin-path={java-bin-dir}])
  fi
  if test -z "$KEYTOOL" -o "$KEYTOOL" = ":"; then
    AC_MSG_ERROR([The program keytool was not found.  Set \$JAVA_HOME to your Java SDK directory or use --with-java-bin-path={java-bin-dir}])
  fi

  AC_MSG_CHECKING([for minimum required javac version >= 1.7])

  dnl Javac spits out something like `javac 1.7.0`. This line cuts off the 'javac'
  _javac_version=$($JAVAC -version 2>&1 | cut -d ' ' -f 2)

  dnl Here, we extract the major (1) and minor (7) version numbers from the
  dnl acquired version string.
  _javac_major_version=$(echo $_javac_version | cut -d '.' -f 1)
  _javac_minor_version=$(echo $_javac_version | cut -d '.' -f 2)

  AC_MSG_RESULT([$_javac_version])

  dnl Fail if we have a version other than 1.7.X
  if test "$_javac_major_version" -ne "1" -o \
       \( "$_javac_minor_version" -lt "7" \); then
      AC_MSG_ERROR([javac 1.7 or higher is required.])
  fi
fi

dnl ========================================================
dnl = ANGLE OpenGL->D3D translator for WebGL
dnl = * only applies to win32
dnl ========================================================

MOZ_ANGLE_RENDERER=
MOZ_D3D_CPU_SUFFIX=
MOZ_HAS_WINSDK_WITH_D3D=
MOZ_D3DCOMPILER_VISTA_DLL=
MOZ_D3DCOMPILER_VISTA_DLL_PATH=
MOZ_DIRECTX_SDK_PATH=
MOZ_D3DCOMPILER_XP_DLL=
MOZ_D3DCOMPILER_XP_CAB=

case "$target_os" in
*mingw*)
    MOZ_ANGLE_RENDERER=1
    ;;
esac

# The DirectX SDK libraries are split into x86 and x64 sub-directories
case "${target_cpu}" in
i*86)
  MOZ_D3D_CPU_SUFFIX=x86
  ;;
x86_64)
  MOZ_D3D_CPU_SUFFIX=x64
  ;;
esac

MOZ_ARG_ENABLE_BOOL(require-all-d3dc-versions,
[  --enable-require-all-d3dc-versions Require all versions of the D3D compiler needed for supported Windows systems.],
    MOZ_REQUIRE_ALL_D3DCS=1,
    MOZ_REQUIRE_ALL_D3DCS=)

# This is potentially set in external mozconfig files; if it's set,
# then the build exposes the "webgl" context name, which is reserved
# for conformant implementations.
if test -n "$MOZ_WEBGL_CONFORMANT"; then
  AC_DEFINE(MOZ_WEBGL_CONFORMANT)
fi

dnl ========================================================
dnl D3D compiler DLL
dnl ========================================================
MOZ_FOUND_D3D_COMPILERS=

if test -n "$MOZ_ANGLE_RENDERER"; then
  if test -z "$MOZ_D3D_CPU_SUFFIX"; then
    AC_MSG_ERROR([Couldn't determine MOZ_D3D_CPU_SUFFIX.])
  fi

  ######################################
  # Find _46+ for use by Vista+.

  # Find a D3D compiler DLL in a Windows SDK.
  MOZ_D3DCOMPILER_VISTA_DLL=
  case "$MOZ_WINSDK_MAXVER" in
  0x0603*|0x0A00*)
    MOZ_D3DCOMPILER_VISTA_DLL=d3dcompiler_47.dll
    AC_MSG_RESULT([Found D3D compiler in Windows SDK.])
  ;;
  esac

  if test -n "$MOZ_D3DCOMPILER_VISTA_DLL"; then
    # We have a name, now track down the path.
    if test -n "$WINDOWSSDKDIR"; then
      MOZ_D3DCOMPILER_VISTA_DLL_PATH="$WINDOWSSDKDIR/Redist/D3D/$MOZ_D3D_CPU_SUFFIX/$MOZ_D3DCOMPILER_VISTA_DLL"
      if test -f "$MOZ_D3DCOMPILER_VISTA_DLL_PATH"; then
        AC_MSG_RESULT([Found MOZ_D3DCOMPILER_VISTA_DLL_PATH: $MOZ_D3DCOMPILER_VISTA_DLL_PATH])
        MOZ_HAS_WINSDK_WITH_D3D=1
      else
        AC_MSG_RESULT([MOZ_D3DCOMPILER_VISTA_DLL_PATH doesn't exist: $MOZ_D3DCOMPILER_VISTA_DLL_PATH])
        AC_MSG_ERROR([Windows SDK at "$WINDOWSSDKDIR" appears broken. Try updating to MozillaBuild 1.9 final or higher.])
        MOZ_D3DCOMPILER_VISTA_DLL_PATH=
      fi
    else
      AC_MSG_RESULT([Windows SDK not found.])
    fi
  else
    AC_MSG_ERROR([Couldn't find Windows SDK 8.1 or higher needed for ANGLE.])
  fi

  if test -z "$MOZ_D3DCOMPILER_VISTA_DLL_PATH"; then
    MOZ_D3DCOMPILER_VISTA_DLL=
  fi

  # On mingw, check if headers are provided by toolchain.
  if test -n "$GNU_CC"; then
    MOZ_CHECK_HEADER(d3d10.h, MOZ_HAS_WINSDK_WITH_D3D=1)
  fi

  ######################################
  # Find _43 for use by XP.

  if test "$HAVE_64BIT_BUILD"; then
    AC_MSG_RESULT([We are building a 64-bit binary, skip checking d3dcompiler_43.])
  else
    # Get the SDK path from the registry.
    # First try to get the June 2010 SDK
    MOZ_DIRECTX_SDK_REG_KEY=`reg query 'HKLM\Software\Microsoft\DirectX' //s | grep 'Microsoft DirectX SDK (June 2010)' | head -n 1`
    if test -z "$MOZ_DIRECTX_SDK_REG_KEY" ; then
      # Otherwise just take whatever comes first
      MOZ_DIRECTX_SDK_REG_KEY=`reg query 'HKLM\Software\Microsoft\DirectX' //s | grep 'Microsoft DirectX SDK' | head -n 1`
    fi
    MOZ_DIRECTX_SDK_PATH=`reg query "$MOZ_DIRECTX_SDK_REG_KEY" //v InstallPath | grep REG_SZ | sed 's/.*\([[a-zA-Z]]\)\\:\\\\/\\1\\:\\\\/' | sed 's,\\\\,/,g'`

    if test -n "$MOZ_DIRECTX_SDK_PATH" &&
       test -f "$MOZ_DIRECTX_SDK_PATH"/lib/$MOZ_D3D_CPU_SUFFIX/dxguid.lib ; then
      AC_MSG_RESULT([Found DirectX SDK via registry, using $MOZ_DIRECTX_SDK_PATH])
    else
      AC_MSG_RESULT([DirectX SDK not found.])
      MOZ_DIRECTX_SDK_PATH=
    fi

    # Check that our DirectX SDK is acceptable.
    if test -n "$MOZ_DIRECTX_SDK_PATH"; then
      if test -n "`echo $MOZ_DIRECTX_SDK_REG_KEY | grep 'February 2010'`" ; then
        AC_MSG_RESULT([Found the February 2010 DirectX SDK, which is unacceptable to ANGLE.])
        MOZ_DIRECTX_SDK_PATH=
      fi
    fi

    if test -n "$MOZ_DIRECTX_SDK_PATH"; then
      # Find a D3D compiler DLL in the DirectX SDK, if we didn't find one already.
      # Get the SDK numeric version (e.g. 43) by looking at the dependencies of d3dx9.lib
      MOZ_D3DX9_VERSION=`dumpbin //headers "$MOZ_DIRECTX_SDK_PATH"/lib/$MOZ_D3D_CPU_SUFFIX/d3dx9.lib | egrep d3dx9_[[0-9]][[0-9]]\.dll | head -n1 | sed 's/.*\([[0-9]][[0-9]]\).*/\\1/g'`

      if test -n "$MOZ_D3DX9_VERSION" ; then
        MOZ_D3DCOMPILER_XP_CAB=`find "$MOZ_DIRECTX_SDK_PATH"/Redist -name *D3DCompiler_${MOZ_D3DX9_VERSION}_${MOZ_D3D_CPU_SUFFIX}.cab | head -n1`

        if test -n "$MOZ_D3DCOMPILER_XP_CAB"; then
          MOZ_D3DCOMPILER_XP_DLL=D3DCompiler_$MOZ_D3DX9_VERSION.dll
        else
          AC_MSG_RESULT([Couldn't find a CAB containing the D3D compiler DLL.])
          AC_MSG_ERROR([DirectX SDK at "$MOZ_DIRECTX_SDK_PATH" appears broken.])
          MOZ_DIRECTX_SDK_PATH=
        fi
      else
        AC_MSG_RESULT([Couldn't determine the D3DX9 version for the DirectX SDK.])
        MOZ_DIRECTX_SDK_PATH=
      fi
    else
      AC_MSG_RESULT([Couldn't find an acceptable DirectX SDK for ANGLE, needed for d3dcompiler_43.])
    fi
  fi

  ######################################
  # Check that we found what we needed.
  MOZ_FOUND_A_D3D_COMPILER=
  MOZ_FOUND_BOTH_D3D_COMPILERS=1

  if test -n "$MOZ_D3DCOMPILER_VISTA_DLL"; then
    MOZ_FOUND_A_D3D_COMPILER=1
    AC_MSG_RESULT([Found d3dcompiler DLL for Vista+: $MOZ_D3DCOMPILER_VISTA_DLL])
  else
    MOZ_FOUND_BOTH_D3D_COMPILERS=
  fi

  if test -n "$MOZ_D3DCOMPILER_XP_DLL"; then
    MOZ_FOUND_A_D3D_COMPILER=1
    AC_MSG_RESULT([Found d3dcompiler DLL for XP: $MOZ_D3DCOMPILER_XP_DLL])
  else
    MOZ_FOUND_BOTH_D3D_COMPILERS=
  fi

  if test -z "$CROSS_COMPILE"; then
    if test -z "MOZ_FOUND_A_D3D_COMPILER"; then
      AC_MSG_ERROR([Couldn't find an acceptable D3D compiler DLL.])
    fi

    if test -n "$MOZ_REQUIRE_ALL_D3DCS" -a -z "$MOZ_FOUND_BOTH_D3D_COMPILERS"; then
      AC_MSG_ERROR([Both D3D compilers _43 and _46+ are required by --enable-require-d3d-compilers.])
      AC_MSG_ERROR([  Install Windows SDK 8.0+, as well as DirectX SDK (June 2010 version or newer), or reconfigure without this flag.])
    fi
  fi
fi


dnl ========================================================
dnl Gamepad support
dnl ========================================================
MOZ_GAMEPAD=
MOZ_GAMEPAD_BACKEND=stub

# Gamepad DOM is built on supported platforms by default.
case "$OS_TARGET" in
     WINNT|Linux)
       MOZ_GAMEPAD=1
       ;;
     Darwin)
       if test -z "$MOZ_IOS"; then
         MOZ_GAMEPAD=1
       fi
       ;;
     Android)
       if test "$MOZ_WIDGET_TOOLKIT" != "gonk"; then
         MOZ_GAMEPAD=1
       fi
       ;;
     *)
       ;;
esac

MOZ_ARG_DISABLE_BOOL(gamepad,
[  --disable-gamepad   Disable gamepad support],
    MOZ_GAMEPAD=,
    MOZ_GAMEPAD=1)

if test "$MOZ_GAMEPAD"; then
    case "$OS_TARGET" in
    Darwin)
        if test -z "$MOZ_IOS"; then
            MOZ_GAMEPAD_BACKEND=cocoa
        fi
        ;;
    WINNT)
        MOZ_GAMEPAD_BACKEND=windows
        ;;
    Linux)
        MOZ_CHECK_HEADER([linux/joystick.h])
        if test "$ac_cv_header_linux_joystick_h" != "yes"; then
          AC_MSG_ERROR([Can't find header linux/joystick.h, needed for gamepad support. Please install Linux kernel headers or reconfigure with --disable-gamepad to disable gamepad support.])
        fi
        MOZ_GAMEPAD_BACKEND=linux
        ;;
    Android)
        MOZ_GAMEPAD_BACKEND=android
        ;;
    *)
        ;;
   esac

  AC_DEFINE(MOZ_GAMEPAD)
fi
AC_SUBST(MOZ_GAMEPAD)
AC_SUBST(MOZ_GAMEPAD_BACKEND)

dnl ========================================================
dnl = Breakpad crash reporting (on by default on supported platforms)
dnl ========================================================

case $target in
i?86-*-mingw*|x86_64-*-mingw*)
  MOZ_CRASHREPORTER=1
  ;;
i?86-apple-darwin*|x86_64-apple-darwin*)
  if test -z "$MOZ_IOS"; then
    MOZ_CRASHREPORTER=1
  fi
  ;;
i?86-*-linux*|x86_64-*-linux*|arm-*-linux*)
  if test "$MOZ_ENABLE_GTK"; then
    MOZ_CRASHREPORTER=1
  fi
  ;;
*-android*|*-linuxandroid*)
  MOZ_CRASHREPORTER=1
  ;;
*solaris*)
  MOZ_CRASHREPORTER=1
  ;;
esac

MOZ_ARG_DISABLE_BOOL(crashreporter,
[  --disable-crashreporter Disable breakpad crash reporting],
    [MOZ_CRASHREPORTER=],
    [MOZ_CRASHREPORTER=F # Force enable breakpad])

if test "$OS_ARCH" != "$HOST_OS_ARCH" -a "$OS_ARCH" != "WINNT" -a "$OS_ARCH" != "Darwin"; then
  if test "$MOZ_CRASHREPORTER" = F; then
    AC_MSG_ERROR([Cannot --enable-crashreporter, as breakpad tools do not support compiling on $HOST_OS_ARCH while targeting $OS_ARCH.])
  fi
  MOZ_CRASHREPORTER=
fi

if test -n "$MOZ_CRASHREPORTER"; then
   AC_DEFINE(MOZ_CRASHREPORTER)

  if test "$OS_TARGET" = "Linux" -o "$OS_ARCH" = "SunOS" && \
    test -z "$SKIP_LIBRARY_CHECKS"; then
    PKG_CHECK_MODULES(MOZ_GTHREAD, gthread-2.0)
  fi

  if test "$OS_ARCH" = "WINNT"; then
    if test -z "$HAVE_64BIT_BUILD"; then
      MOZ_CRASHREPORTER_INJECTOR=1
      AC_DEFINE(MOZ_CRASHREPORTER_INJECTOR)
    fi
  fi
fi

MOZ_ARG_WITH_STRING(crashreporter-enable-percent,
[  --with-crashreporter-enable-percent=NN
                          Enable sending crash reports by default on NN% of users. (default=100)],
[ val=`echo $withval | sed 's/[^0-9]//g'`
    MOZ_CRASHREPORTER_ENABLE_PERCENT="$val"])

if test -z "$MOZ_CRASHREPORTER_ENABLE_PERCENT"; then
   MOZ_CRASHREPORTER_ENABLE_PERCENT=100
fi
AC_DEFINE_UNQUOTED(MOZ_CRASHREPORTER_ENABLE_PERCENT, $MOZ_CRASHREPORTER_ENABLE_PERCENT)

dnl ========================================================
dnl = libjpeg-turbo configuration
dnl ========================================================
MOZ_LIBJPEG_TURBO=
if test -z "$MOZ_NATIVE_JPEG"; then
    MOZ_LIBJPEG_TURBO=1
fi

MOZ_ARG_DISABLE_BOOL(libjpeg_turbo,
[ --disable-libjpeg-turbo  Disable optimized jpeg decoding routines],
    MOZ_LIBJPEG_TURBO=,
    MOZ_LIBJPEG_TURBO=1)

if test "$MOZ_NATIVE_JPEG" = 1 -a "$MOZ_LIBJPEG_TURBO" = 1; then
    AC_MSG_ERROR([cannot use --with-system-jpeg with --enable-libjpeg-turbo.])
fi

dnl Detect if we can use yasm to compile libjpeg-turbo's optimized assembly
dnl files.

if test -n "$MOZ_LIBJPEG_TURBO"; then

  dnl Do we support libjpeg-turbo on this platform?
  case "$OS_ARCH:$CPU_ARCH" in
  Darwin:x86)
    LIBJPEG_TURBO_ASFLAGS="-f macho32 -rnasm -pnasm -DPIC -DMACHO"
  ;;
  Darwin:x86_64)
    LIBJPEG_TURBO_ASFLAGS="-f macho64 -rnasm -pnasm -D__x86_64__ -DPIC -DMACHO"
  ;;
  Darwin:arm*)
  ;;
  WINNT:x86)
    LIBJPEG_TURBO_ASFLAGS="-f win32 -rnasm -pnasm -DPIC -DWIN32"
  ;;
  WINNT:x86_64)
    LIBJPEG_TURBO_ASFLAGS="-f win64 -rnasm -pnasm -D__x86_64__ -DPIC -DWIN64 -DMSVC"
  ;;
  *:arm)
    LIBJPEG_TURBO_ASFLAGS="-march=armv7-a -mfpu=neon"
  ;;
  *:aarch64)
    LIBJPEG_TURBO_ASFLAGS="-march=armv8-a"
  ;;
  *:mips)
    LIBJPEG_TURBO_ASFLAGS="-mdspr2"
  ;;
  *:x86)
    if $CC -E -dM -</dev/null | grep -q __ELF__; then
      LIBJPEG_TURBO_ASFLAGS="-f elf32 -rnasm -pnasm -DPIC -DELF"
    fi
  ;;
  *:x86_64)
    if $CC -E -dM -</dev/null | grep -q __ELF__; then
      LIBJPEG_TURBO_ASFLAGS="-f elf64 -rnasm -pnasm -D__x86_64__ -DPIC -DELF"
    fi
  ;;
  esac
fi

if test -n "$LIBJPEG_TURBO_ASFLAGS"; then
  case "$CPU_ARCH" in
dnl If we're on an x86 or x64 system which supports libjpeg-turbo's asm routines
dnl and --disable-libjpeg-turbo wasn't passed, check for Yasm, and error out if
dnl it doesn't exist or we have too old of a version.
  x86_64|x86)
    LIBJPEG_TURBO_AS=$YASM

    if test -z "$LIBJPEG_TURBO_AS" ; then
        AC_MSG_ERROR([Yasm is required to build with libjpeg-turbo's optimized JPEG decoding routines, but you do not appear to have Yasm installed.  Either install it or configure with --disable-libjpeg-turbo to use the pure C JPEG decoder.  See https://developer.mozilla.org/en/YASM for more details.])
    fi

    dnl Check that we have the right yasm version.  We require 1.0.1 or newer
    dnl on Linux and 1.1 or newer everywhere else.
    if test "$OS_ARCH" = "Linux" ; then
        if test "$_YASM_MAJOR_VERSION" -lt "1" -o \( "$_YASM_MAJOR_VERSION" -eq "1" -a "$_YASM_MINOR_VERSION" -eq "0" -a "$_YASM_RELEASE" -lt "1" \) ; then
            AC_MSG_ERROR([Yasm 1.0.1 or greater is required to build with libjpeg-turbo's optimized JPEG decoding routines, but you appear to have version $_YASM_MAJOR_VERSION.$_YASM_MINOR_VERSION.$_YASM_RELEASE.  Upgrade to the newest version or configure with --disable-libjpeg-turbo to use the pure C JPEG decoder.  See https://developer.mozilla.org/en/YASM for more details.])
        fi
    else
        if test "$_YASM_MAJOR_VERSION" -lt "1" -o \( "$_YASM_MAJOR_VERSION" -eq "1" -a "$_YASM_MINOR_VERSION" -lt "1" \) ; then
            AC_MSG_ERROR([Yasm 1.1 or greater is required to build with libjpeg-turbo's optimized JPEG decoding routines, but you appear to have version $_YASM_MAJOR_VERSION.$_YASM_MINOR_VERSION.  Upgrade to the newest version or configure with --disable-libjpeg-turbo to use the pure C JPEG decoder.  See https://developer.mozilla.org/en/YASM for more details.])
        fi
    fi
  ;;
dnl On other platforms, use the C compiler as the assembler.
  *)
    LIBJPEG_TURBO_AS=$AS
  ;;
  esac
elif test -n "$MOZ_LIBJPEG_TURBO"; then
    dnl Warn if we're not building the optimized routines, even though the user
    dnl didn't specify --disable-libjpeg-turbo.
    AC_MSG_WARN([No assembler or assembly support for libjpeg-turbo.  Using unoptimized C routines.])
fi

dnl ========================================================
dnl = libav-fft configuration
dnl ========================================================

MOZ_LIBAV_FFT=

dnl Turn on libav-fft for 32-bit windows, and all 64-bit supported platforms.
dnl 32-bit linux/os x have text relocation issues.

case "$OS_ARCH:$CPU_ARCH" in
  WINNT:x86)
      MOZ_LIBAV_FFT=1
  ;;
  *:x86_64)
      MOZ_LIBAV_FFT=1
  ;;
esac

dnl Detect if we can use yasm to compile libav's assembly

if test -n "$MOZ_LIBAV_FFT"; then
  AC_DEFINE(MOZ_LIBAV_FFT)
  dnl Do we support libav-fft on this platform?
  case "$OS_ARCH:$CPU_ARCH" in
  Darwin:x86_64)
    LIBAV_FFT_ASFLAGS="-f macho64 -rnasm -pnasm -D__x86_64__ -DPIC -DMACHO"
  ;;
  WINNT:x86)
    LIBAV_FFT_ASFLAGS="-f win32 -rnasm -pnasm -DPIC -DWIN32"
  ;;
  WINNT:x86_64)
    LIBAV_FFT_ASFLAGS="-f win64 -rnasm -pnasm -D__x86_64__ -DPIC -DWIN64 -DMSVC"
  ;;
  *:x86_64)
    if $CC -E -dM -</dev/null | grep -q __ELF__; then
      LIBAV_FFT_ASFLAGS="-f elf64 -rnasm -pnasm -D__x86_64__ -DPIC -DELF"
    fi
  ;;
  *)
    AC_MSG_ERROR([libav's FFT routines are only available for 32-bit windows or 64-bit x86 based platforms.])
  ;;
  esac
fi

if test -n "$LIBAV_FFT_ASFLAGS"; then
  dnl If we're on an x86 or x64 system which supports libav-fft's asm routines
  dnl check for Yasm, and error out if it doesn't exist or we have too old of a
  dnl version.
  LIBAV_FFT_AS=$YASM
  if test -z "$LIBAV_FFT_AS" ; then
    AC_MSG_ERROR([Yasm is required to build with libav's optimized FFT routines, but you do not appear to have Yasm installed. See https://developer.mozilla.org/en/YASM for more details.])
  fi
  dnl Check that we have the right yasm version.  We require 1.0.1 or newer
  dnl on Linux and 1.1 or newer everywhere else.
  if test "$OS_ARCH" = "Linux" ; then
    if test "$_YASM_MAJOR_VERSION" -lt "1" -o \( "$_YASM_MAJOR_VERSION" -eq "1" -a "$_YASM_MINOR_VERSION" -eq "0" -a "$_YASM_RELEASE" -lt "1" \) ; then
      AC_MSG_ERROR([Yasm 1.0.1 or greater is required to build with libav's optimized FFT routines, but you do not appear to have Yasm installed.  See https://developer.mozilla.org/en/YASM for more details.])
    fi
  else
    if test "$_YASM_MAJOR_VERSION" -lt "1" -o \( "$_YASM_MAJOR_VERSION" -eq "1" -a "$_YASM_MINOR_VERSION" -lt "1" \) ; then
      AC_MSG_ERROR([Yasm 1.1 or greater is required to build with libav's optimized FFT routines, but you do not appear to have Yasm installed.  See https://developer.mozilla.org/en/YASM for more details.])
    fi
  fi
elif test -n "$MOZ_LIBAV_FFT" -a "${CPU_ARCH}" != "arm"; then
  dnl Warn if we're not building either libav or opendl-max optimized routines.
  AC_MSG_WARN([No assembler or assembly support for libav-fft.  Using unoptimized C routines.])
fi

dnl ========================================================
dnl = Enable compilation of specific extension modules
dnl ========================================================

MOZ_ARG_ENABLE_STRING(extensions,
[  --enable-extensions     Enable extensions],
[ for option in `echo $enableval | sed 's/,/ /g'`; do
    if test "$option" = "yes" -o "$option" = "all"; then
        AC_MSG_ERROR([--enable-extensions=$option is no longer supported.])
    elif test "$option" = "no" -o "$option" = "none"; then
        MOZ_EXTENSIONS=""
    elif test "$option" = "default"; then
        MOZ_EXTENSIONS="$MOZ_EXTENSIONS $MOZ_EXTENSIONS_DEFAULT"
    elif test `echo "$option" | grep -c \^-` != 0; then
        option=`echo $option | sed 's/^-//'`
        MOZ_EXTENSIONS=`echo "$MOZ_EXTENSIONS" | sed "s/ ${option}//"`
    else
        MOZ_EXTENSIONS="$MOZ_EXTENSIONS $option"
    fi
done],
    MOZ_EXTENSIONS="$MOZ_EXTENSIONS_DEFAULT")

if test -z "$MOZ_ENABLE_GIO" -a `echo "$MOZ_EXTENSIONS" | grep -c gio` -ne 0; then
    # Suppress warning on non-X11 platforms
    if test -n "$MOZ_X11"; then
        AC_MSG_WARN([Removing gio from MOZ_EXTENSIONS due to --disable-gio.])
    fi
    MOZ_EXTENSIONS=`echo $MOZ_EXTENSIONS | sed -e 's|gio||'`
fi

if test `echo "$MOZ_EXTENSIONS" | grep -c gio` -ne 0; then
    MOZ_GIO_COMPONENT=1
    MOZ_EXTENSIONS=`echo $MOZ_EXTENSIONS | sed -e 's|gio||'`
fi
AC_SUBST(MOZ_GIO_COMPONENT)

dnl Ensure every extension exists, to avoid mostly-inscrutable error messages
dnl when trying to build a nonexistent extension.
for extension in $MOZ_EXTENSIONS; do
    if test ! -d "${srcdir}/extensions/${extension}"; then
        AC_MSG_ERROR([Unrecognized extension provided to --enable-extensions: ${extension}.])
    fi
done

if test -n "$MOZ_USE_NATIVE_POPUP_WINDOWS"; then
  AC_DEFINE(MOZ_USE_NATIVE_POPUP_WINDOWS)
fi

dnl ========================================================
dnl Build Freetype in the tree
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(tree-freetype,
[  --enable-tree-freetype  Enable Tree FreeType],
    MOZ_TREE_FREETYPE=1,
    MOZ_TREE_FREETYPE= )
if test -n "$MOZ_TREE_FREETYPE"; then
   if test -n "$_WIN32_MSVC"; then
      AC_ERROR("building with in-tree freetype is not supported on MSVC")
   fi
   AC_DEFINE(MOZ_TREE_FREETYPE)
   AC_SUBST(MOZ_TREE_FREETYPE)
   MOZ_ENABLE_CAIRO_FT=1
   FT_FONT_FEATURE="#define CAIRO_HAS_FT_FONT 1"
   FT2_CFLAGS='-I$(topsrcdir)/modules/freetype2/include'
   CAIRO_FT_CFLAGS='-I$(topsrcdir)/modules/freetype2/include'
   CAIRO_FT_OSLIBS=''
   AC_DEFINE(HAVE_FT_BITMAP_SIZE_Y_PPEM)
   AC_DEFINE(HAVE_FT_GLYPHSLOT_EMBOLDEN)
   AC_DEFINE(HAVE_FT_LOAD_SFNT_TABLE)
   AC_SUBST_LIST(CAIRO_FT_CFLAGS)
fi

dnl ========================================================
dnl Installer
dnl ========================================================
dnl Abort Windows build if the required major version and
dnl minimum minor version of Unicode NSIS isn't in the path
dnl (unless in case of cross compiling, for which Unicode
dnl is not yet sufficient).
if test "$OS_ARCH" = "WINNT"; then
    MIN_NSIS_MAJOR_VER=2
    MIN_NSIS_MINOR_VER=46
    MOZ_PATH_PROGS(MAKENSISU, $MAKENSISU makensis-3.0b1.exe makensisu-3.0a2.exe makensisu-2.46.exe makensis)
    if test -n "$MAKENSISU" -a "$MAKENSISU" != ":"; then
      AC_MSG_RESULT([yes])
      MAKENSISU_VER=`"$MAKENSISU" -version 2>/dev/null`
      changequote(,)
      MAKENSISU_PARSED_VER=`echo "$MAKENSISU_VER" | sed -e '/-Unicode/!s/.*//g' -e 's/^v\([0-9]\+\.[0-9]\+\).*\-Unicode$/\1/g'`
      changequote([,])
      if test "$MAKENSISU_PARSED_VER" = ""; then
          changequote(,)
          MAKENSISU_PARSED_VER=`echo "$MAKENSISU_VER" | sed -e 's/^v\([0-9]\+\.[0-9]\+\).*$/\1/g'`
          changequote([,])
      fi
      MAKENSISU_MAJOR_VER=0
      MAKENSISU_MINOR_VER=0
      if test ! "$MAKENSISU_PARSED_VER" = ""; then
          MAKENSISU_MAJOR_VER=`echo $MAKENSISU_PARSED_VER | $AWK -F\. '{ print $1 }'`
          MAKENSISU_MINOR_VER=`echo $MAKENSISU_PARSED_VER | $AWK -F\. '{ print $2 }'`
      fi
      AC_MSG_CHECKING([for Unicode NSIS version $MIN_NSIS_MAJOR_VER.$MIN_NSIS_MINOR_VER or greater])
      if test "$MAKENSISU_MAJOR_VER" -eq $MIN_NSIS_MAJOR_VER -a \
              "$MAKENSISU_MINOR_VER" -ge $MIN_NSIS_MINOR_VER ||
         test "$MAKENSISU_MAJOR_VER" -gt $MIN_NSIS_MAJOR_VER; then
          AC_MSG_RESULT([yes])
      else
          AC_MSG_RESULT([no])
          if test -z "$CROSS_COMPILE"; then
            AC_MSG_ERROR([To build the installer you must have the latest MozillaBuild or Unicode NSIS version $MIN_NSIS_MAJOR_VER.$MIN_NSIS_MINOR_VER or greater in your path.])
          else
            MAKENSISU=
          fi
      fi
    elif test -z "$CROSS_COMPILE"; then
      AC_MSG_ERROR([To build the installer you must have the latest MozillaBuild or Unicode NSIS version $MIN_NSIS_MAJOR_VER.$MIN_NSIS_MINOR_VER or greater in your path.])
    else
      MAKENSISU=
    fi
fi

dnl ========================================================
dnl Web App Runtime
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(webapp-runtime,
[  --disable-webapp-runtime  Disable Web App Runtime],
    MOZ_WEBAPP_RUNTIME=,
    MOZ_WEBAPP_RUNTIME=1)
if test "$MOZ_WIDGET_TOOLKIT" != "windows" -a "$MOZ_WIDGET_TOOLKIT" != "cocoa" -a -z "$MOZ_WIDGET_GTK" ; then
    MOZ_WEBAPP_RUNTIME=
fi
if test "$OS_ARCH" = "WINNT" -a -z "$MAKENSISU" -a -n "$CROSS_COMPILE"; then
    MOZ_WEBAPP_RUNTIME=
fi
AC_SUBST(MOZ_WEBAPP_RUNTIME)
if test "$MOZ_WEBAPP_RUNTIME"; then
    AC_DEFINE(MOZ_WEBAPP_RUNTIME)
fi

AC_CHECK_PROGS(TAR, gnutar gtar tar, "")
if test -z "$TAR"; then
    AC_MSG_ERROR([no tar archiver found in \$PATH])
fi
AC_SUBST(TAR)

AC_CHECK_PROGS(WGET, wget, "")
AC_SUBST(WGET)

dnl ========================================================
dnl Signing
dnl ========================================================

if test -n "$MOZ_SIGN_CMD"; then
    AC_DEFINE(MOZ_SIGNING)
fi

dnl ========================================================
dnl Maintenance Service
dnl ========================================================

MOZ_ARG_ENABLE_BOOL(maintenance-service,
[  --enable-maintenance-service       Enable building of maintenanceservice],
    MOZ_MAINTENANCE_SERVICE=1,
    MOZ_MAINTENANCE_SERVICE= )

if test -n "$MOZ_MAINTENANCE_SERVICE"; then
  if test "$OS_ARCH" = "WINNT"; then
    AC_DEFINE(MOZ_MAINTENANCE_SERVICE)
  else
    AC_MSG_ERROR([Can only build with --enable-maintenance-service with a Windows target])
  fi
fi

dnl ========================================================
dnl Bundled fonts on desktop platforms
dnl ========================================================

MOZ_ARG_ENABLE_BOOL(bundled-fonts,
[  --enable-bundled-fonts  Enable support for bundled fonts on desktop platforms],
    MOZ_BUNDLED_FONTS=1,
    MOZ_BUNDLED_FONTS=)

if test -n "$MOZ_BUNDLED_FONTS"; then
  AC_DEFINE(MOZ_BUNDLED_FONTS)
fi

dnl ========================================================
dnl Verify MAR signatures
dnl ========================================================

MOZ_ARG_ENABLE_BOOL(verify-mar,
[  --enable-verify-mar     Enable verifying MAR signatures],
    MOZ_VERIFY_MAR_SIGNATURE=1,
    MOZ_VERIFY_MAR_SIGNATURE= )

if test -n "$MOZ_VERIFY_MAR_SIGNATURE"; then
  AC_DEFINE(MOZ_VERIFY_MAR_SIGNATURE)
fi

dnl ========================================================
dnl Enable building the signmar program.
dnl This option is much different than the --enable-verify-mar option.
dnl --enable-verify-mar is for enabling the verification check on MAR
dnl files in the updater.  The --enable-signmar option is for building
dnl the signmar program.
dnl ========================================================

MOZ_ARG_ENABLE_BOOL(signmar,
[  --enable-signmar     Enable building the signmar program],
    MOZ_ENABLE_SIGNMAR=1,
    MOZ_ENABLE_SIGNMAR= )

if test -n "$MOZ_ENABLE_SIGNMAR"; then
  AC_DEFINE(MOZ_ENABLE_SIGNMAR)
fi

dnl ========================================================
dnl Updater
dnl ========================================================

if test "$MOZ_IOS"; then
  MOZ_UPDATER=
fi

MOZ_ARG_DISABLE_BOOL(updater,
[  --disable-updater       Disable building of updater],
    MOZ_UPDATER=,
    MOZ_UPDATER=1 )

if test -n "$MOZ_UPDATER"; then
    AC_DEFINE(MOZ_UPDATER)
fi

# tools/update-packaging is not checked out by default.
MOZ_ARG_ENABLE_BOOL(update-packaging,
[  --enable-update-packaging
                          Enable tools/update-packaging],
    MOZ_UPDATE_PACKAGING=1,
    MOZ_UPDATE_PACKAGING= )
AC_SUBST(MOZ_UPDATE_PACKAGING)

dnl ========================================================
dnl build the tests by default
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(tests,
[  --disable-tests         Do not build test libraries & programs],
    ENABLE_TESTS=,
    ENABLE_TESTS=1 )

if test -n "$ENABLE_TESTS"; then
    GTEST_HAS_RTTI=0
    AC_DEFINE(ENABLE_TESTS)
    AC_DEFINE_UNQUOTED(GTEST_HAS_RTTI, 0)
    AC_SUBST(GTEST_HAS_RTTI)
    if test -n "$_WIN32_MSVC"; then
          AC_DEFINE_UNQUOTED(_VARIADIC_MAX, 10)
    fi
    if test "${OS_TARGET}" = "Android"; then
        AC_DEFINE(GTEST_OS_LINUX_ANDROID)
        AC_DEFINE(GTEST_USE_OWN_TR1_TUPLE)
        AC_DEFINE_UNQUOTED(GTEST_HAS_CLONE, 0)
        AC_SUBST(GTEST_OS_LINUX_ANDROID)
        AC_SUBST(GTEST_USE_OWN_TR1_TUPLE)
        AC_SUBST(GTEST_HAS_CLONE)
    fi
fi

dnl ========================================================
dnl parental controls (for Windows Vista)
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(parental-controls,
[  --disable-parental-controls
                          Do not build parental controls],
   MOZ_DISABLE_PARENTAL_CONTROLS=1,
   MOZ_DISABLE_PARENTAL_CONTROLS=)
if test -n "$MOZ_DISABLE_PARENTAL_CONTROLS"; then
    AC_DEFINE(MOZ_DISABLE_PARENTAL_CONTROLS)
fi

AC_SUBST(MOZ_DISABLE_PARENTAL_CONTROLS)

dnl ========================================================
dnl = Disable smartcard support
dnl ========================================================
if test -n "$MOZ_NO_SMART_CARDS"; then
    AC_DEFINE(MOZ_NO_SMART_CARDS)
fi
AC_SUBST(MOZ_NO_SMART_CARDS)

dnl ========================================================
dnl = Disable EV certificate verification
dnl ========================================================
if test -n "$MOZ_NO_EV_CERTS"; then
    AC_DEFINE(MOZ_NO_EV_CERTS)
fi
AC_SUBST(MOZ_NO_EV_CERTS)

dnl ========================================================
dnl = Sandboxing support
dnl ========================================================
if test -n "$MOZ_TSAN"; then
    # Bug 1182565: TSan conflicts with sandboxing on Linux.
    case $OS_TARGET in
    Linux|Android)
        MOZ_SANDBOX=
        ;;
    esac
fi

MOZ_ARG_DISABLE_BOOL(sandbox,
[  --disable-sandbox        Disable sandboxing support],
    MOZ_SANDBOX=,
    MOZ_SANDBOX=1)

dnl ========================================================
dnl = Content process sandboxing
dnl ========================================================
if test -n "$gonkdir"; then
    MOZ_CONTENT_SANDBOX=$MOZ_SANDBOX
fi

case "$OS_TARGET:$NIGHTLY_BUILD" in
WINNT:1)
    MOZ_CONTENT_SANDBOX=$MOZ_SANDBOX
    ;;
Darwin:1)
    MOZ_CONTENT_SANDBOX=$MOZ_SANDBOX
    ;;
esac

MOZ_ARG_ENABLE_BOOL(content-sandbox,
[  --enable-content-sandbox Enable sandboxing support for content-processes
  --disable-content-sandbox Disable sandboxing support for content-processes],
    MOZ_CONTENT_SANDBOX=1,
    MOZ_CONTENT_SANDBOX=)

if test -n "$MOZ_CONTENT_SANDBOX" -a -z "$MOZ_SANDBOX"; then
    AC_MSG_ERROR([--enable-content-sandbox and --disable-sandbox are conflicting options])
fi

if test -n "$MOZ_CONTENT_SANDBOX"; then
    AC_DEFINE(MOZ_CONTENT_SANDBOX)
fi

AC_SUBST(MOZ_CONTENT_SANDBOX)

dnl ========================================================
dnl = Gecko Media Plugin sandboxing
dnl ========================================================
case $OS_TARGET in
WINNT)
    MOZ_GMP_SANDBOX=$MOZ_SANDBOX
    ;;
Linux)
    case $CPU_ARCH in
    x86_64|x86)
        MOZ_GMP_SANDBOX=$MOZ_SANDBOX
        ;;
    esac
    ;;
Darwin)
    MOZ_GMP_SANDBOX=$MOZ_SANDBOX
    ;;
esac

if test -n "$MOZ_GMP_SANDBOX"; then
    AC_DEFINE(MOZ_GMP_SANDBOX)
fi

AC_SUBST(MOZ_GMP_SANDBOX)

if test -z "$MOZ_CONTENT_SANDBOX" -a -z "$MOZ_GMP_SANDBOX"; then
    MOZ_SANDBOX=
fi

if test -n "$MOZ_SANDBOX"; then
    AC_DEFINE(MOZ_SANDBOX)
fi

AC_SUBST(MOZ_SANDBOX)


dnl ========================================================
dnl =
dnl = Module specific options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Individual module options)

dnl ========================================================
dnl = Disable feed handling components
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(feeds,
[  --disable-feeds         Disable feed handling and processing components],
    MOZ_FEEDS=,
    MOZ_FEEDS=1 )
if test -n "$MOZ_FEEDS"; then
    AC_DEFINE(MOZ_FEEDS)
else
    if test "$MOZ_BUILD_APP" = "browser"; then
        AC_MSG_ERROR([Cannot build Firefox with --disable-feeds.])
    fi
fi

dnl ========================================================
dnl Check for sqlite
dnl ========================================================

MOZ_NATIVE_SQLITE=
MOZ_ARG_ENABLE_BOOL(system-sqlite,
[  --enable-system-sqlite  Use system sqlite (located with pkgconfig)],
MOZ_NATIVE_SQLITE=1,
MOZ_NATIVE_SQLITE= )

if test -n "$MOZ_NATIVE_SQLITE"
then
    dnl ============================
    dnl === SQLite Version check ===
    dnl ============================
    dnl Check to see if the system SQLite package is new enough.
    PKG_CHECK_MODULES(SQLITE, sqlite3 >= $SQLITE_VERSION)

    dnl ==================================
    dnl === SQLITE_SECURE_DELETE check ===
    dnl ==================================
    dnl Check to see if the system SQLite package is compiled with
    dnl SQLITE_SECURE_DELETE enabled.
    AC_MSG_CHECKING(for SQLITE_SECURE_DELETE support in system SQLite)
    _SAVE_CFLAGS="$CFLAGS"
    CFLAGS="$CFLAGS $SQLITE_CFLAGS"
    _SAVE_LIBS="$LIBS"
    LIBS="$LIBS $SQLITE_LIBS"
    AC_CACHE_VAL(ac_cv_sqlite_secure_delete,[
        AC_TRY_RUN([
            #include "sqlite3.h"

            int main(int argc, char **argv){
              return !sqlite3_compileoption_used("SQLITE_SECURE_DELETE");
            }],
            ac_cv_sqlite_secure_delete=yes,
            ac_cv_sqlite_secure_delete=no,
            ac_cv_sqlite_secure_delete=no
        )
    ])
    AC_MSG_RESULT($ac_cv_sqlite_secure_delete)
    CFLAGS="$_SAVE_CFLAGS"
    LIBS="$_SAVE_LIBS"
    if test "x$ac_cv_sqlite_secure_delete" = "xno"; then
        AC_MSG_ERROR([System SQLite library is not compiled with SQLITE_SECURE_DELETE.])
    fi

    dnl ===============================
    dnl === SQLITE_THREADSAFE check ===
    dnl ===============================
    dnl Check to see if the system SQLite package is compiled with
    dnl SQLITE_THREADSAFE enabled.
    AC_MSG_CHECKING(for SQLITE_THREADSAFE support in system SQLite)
    _SAVE_CFLAGS="$CFLAGS"
    CFLAGS="$CFLAGS $SQLITE_CFLAGS"
    _SAVE_LIBS="$LIBS"
    LIBS="$LIBS $SQLITE_LIBS"
    AC_CACHE_VAL(ac_cv_sqlite_threadsafe,[
        AC_TRY_RUN([
            #include "sqlite3.h"

            int main(int argc, char **argv){
              return !sqlite3_compileoption_used("SQLITE_THREADSAFE=1");
            }],
            ac_cv_sqlite_threadsafe=yes,
            ac_cv_sqlite_threadsafe=no,
            ac_cv_sqlite_threadsafe=no
        )
    ])
    AC_MSG_RESULT($ac_cv_sqlite_threadsafe)
    CFLAGS="$_SAVE_CFLAGS"
    LIBS="$_SAVE_LIBS"
    if test "x$ac_cv_sqlite_threadsafe" = "xno"; then
        AC_MSG_ERROR([System SQLite library is not compiled with SQLITE_THREADSAFE.])
    fi

    dnl ================================
    dnl === SQLITE_ENABLE_FTS3 check ===
    dnl ================================
    dnl check to see if the system SQLite package is compiled with
    dnl SQLITE_ENABLE_FTS3 enabled.
    AC_MSG_CHECKING(for SQLITE_ENABLE_FTS3 support in system SQLite)
    _SAVE_CFLAGS="$CFLAGS"
    CFLAGS="$CFLAGS $SQLITE_CFLAGS"
    _SAVE_LIBS="$LIBS"
    LIBS="$LIBS $SQLITE_LIBS"
    AC_CACHE_VAL(ac_cv_sqlite_enable_fts3,[
        AC_TRY_RUN([
            #include "sqlite3.h"

            int main(int argc, char **argv){
              return !sqlite3_compileoption_used("SQLITE_ENABLE_FTS3");
            }],
            ac_cv_sqlite_enable_fts3=yes,
            ac_cv_sqlite_enable_fts3=no,
            ac_cv_sqlite_enable_fts3=no
        )
    ])
    AC_MSG_RESULT($ac_cv_sqlite_enable_fts3)
    CFLAGS="$_SAVE_CFLAGS"
    LIBS="$_SAVE_LIBS"
    if test "x$ac_cv_sqlite_enable_fts3" = "xno"; then
        AC_MSG_ERROR([System SQLite library is not compiled with SQLITE_ENABLE_FTS3.])
    fi

    dnl =========================================
    dnl === SQLITE_ENABLE_UNLOCK_NOTIFY check ===
    dnl =========================================
    dnl check to see if the system SQLite package is compiled with
    dnl SQLITE_ENABLE_UNLOCK_NOTIFY enabled.
    AC_MSG_CHECKING(for SQLITE_ENABLE_UNLOCK_NOTIFY support in system SQLite)
    _SAVE_CFLAGS="$CFLAGS"
    CFLAGS="$CFLAGS $SQLITE_CFLAGS"
    _SAVE_LIBS="$LIBS"
    LIBS="$LIBS $SQLITE_LIBS"
    AC_CACHE_VAL(ac_cv_sqlite_enable_unlock_notify,[
        AC_TRY_RUN([
            #include "sqlite3.h"

            int main(int argc, char **argv){
              return !sqlite3_compileoption_used("SQLITE_ENABLE_UNLOCK_NOTIFY");
            }],
            ac_cv_sqlite_enable_unlock_notify=yes,
            ac_cv_sqlite_enable_unlock_notify=no,
            ac_cv_sqlite_enable_unlock_notify=no
        )
    ])
    AC_MSG_RESULT($ac_cv_sqlite_enable_unlock_notify)
    CFLAGS="$_SAVE_CFLAGS"
    LIBS="$_SAVE_LIBS"
    if test "x$ac_cv_sqlite_enable_unlock_notify" = "xno"; then
        AC_MSG_ERROR([System SQLite library is not compiled with SQLITE_ENABLE_UNLOCK_NOTIFY.])
    fi

    dnl =========================================
    dnl === SQLITE_ENABLE_DBSTAT_VTAB check ===
    dnl =========================================
    dnl check to see if the system SQLite package is compiled with
    dnl SQLITE_ENABLE_DBSTAT_VTAB.
    AC_MSG_CHECKING(for SQLITE_ENABLE_DBSTAT_VTAB support in system SQLite)
    _SAVE_CFLAGS="$CFLAGS"
    CFLAGS="$CFLAGS $SQLITE_CFLAGS"
    _SAVE_LIBS="$LIBS"
    LIBS="$LIBS $SQLITE_LIBS"
    AC_CACHE_VAL(ac_cv_sqlite_dbstat_vtab,[
        AC_TRY_RUN([
            #include "sqlite3.h"

            int main(int argc, char **argv){
              return !sqlite3_compileoption_used("SQLITE_ENABLE_DBSTAT_VTAB");
            }],
            ac_cv_sqlite_dbstat_vtab=yes,
            ac_cv_sqlite_dbstat_vtab=no,
            ac_cv_sqlite_dbstat_vtab=no
        )
    ])
    AC_MSG_RESULT($ac_cv_sqlite_dbstat_vtab)
    CFLAGS="$_SAVE_CFLAGS"
    LIBS="$_SAVE_LIBS"
    if test "x$ac_cv_sqlite_dbstat_vtab" = "xno"; then
        AC_MSG_ERROR([System SQLite library is not compiled with SQLITE_ENABLE_DBSTAT_VTAB.])
    fi
fi

if test -n "$MOZ_NATIVE_SQLITE"; then
    AC_DEFINE(MOZ_NATIVE_SQLITE)
fi
AC_SUBST(MOZ_NATIVE_SQLITE)

dnl ========================================================
dnl = Enable help viewer (off by default)
dnl ========================================================
if test -n "$MOZ_HELP_VIEWER"; then
     dnl Do this if defined in confvars.sh
     AC_DEFINE(MOZ_HELP_VIEWER)
fi

dnl ========================================================
dnl = Enable safe browsing (anti-phishing)
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(safe-browsing,
[  --enable-safe-browsing  Enable safe browsing (anti-phishing) implementation],
    MOZ_SAFE_BROWSING=1,
    MOZ_SAFE_BROWSING= )
if test -n "$MOZ_SAFE_BROWSING"; then
    AC_DEFINE(MOZ_SAFE_BROWSING)
fi
AC_SUBST(MOZ_SAFE_BROWSING)

dnl ========================================================
dnl = Enable url-classifier
dnl ========================================================
dnl Implicitly enabled by default if building with safe-browsing
if test -n "$MOZ_SAFE_BROWSING"; then
    MOZ_URL_CLASSIFIER=1
fi
MOZ_ARG_ENABLE_BOOL(url-classifier,
[  --enable-url-classifier Enable url classifier module],
    MOZ_URL_CLASSIFIER=1,
    MOZ_URL_CLASSIFIER= )
if test -n "$MOZ_URL_CLASSIFIER"; then
    AC_DEFINE(MOZ_URL_CLASSIFIER)
fi
AC_SUBST(MOZ_URL_CLASSIFIER)

dnl ========================================================
dnl = Disable zipwriter
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(zipwriter,
[  --disable-zipwriter     Disable zipwriter component],
    MOZ_ZIPWRITER=,
    MOZ_ZIPWRITER=1 )
AC_SUBST(MOZ_ZIPWRITER)

dnl ========================================================
dnl GL provider
dnl ========================================================
MOZ_GL_PROVIDER=
MOZ_ARG_WITH_STRING(gl-provider,
[  --with-gl-provider=ID
                          Set GL provider backend type],
[ val=`echo $withval`
    MOZ_GL_PROVIDER="$val"])

if test -n "$MOZ_GL_PROVIDER"; then
MOZ_GL_DEFAULT_PROVIDER=$MOZ_GL_PROVIDER
AC_SUBST(MOZ_GL_PROVIDER)
AC_DEFINE_UNQUOTED(MOZ_GL_PROVIDER, GLContextProvider$MOZ_GL_PROVIDER)
fi
AC_SUBST(MOZ_GL_DEFAULT_PROVIDER)
AC_DEFINE_UNQUOTED(GL_PROVIDER_$MOZ_GL_DEFAULT_PROVIDER)

dnl ========================================================
dnl = faststripe theme
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(faststripe,
[  --enable-faststripe     Use faststripe theme],
    MOZ_THEME_FASTSTRIPE=1,
    MOZ_THEME_FASTSTRIPE= )
AC_SUBST(MOZ_THEME_FASTSTRIPE)

dnl ========================================================
dnl =
dnl = Feature options that require extra sources to be pulled
dnl =
dnl ========================================================
dnl MOZ_ARG_HEADER(Features that require extra sources)

dnl ========================================================
dnl =
dnl = Runtime debugging and Optimization Options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Runtime debugging and Optimizations)

dnl ========================================================
dnl enable mobile optimizations
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(mobile-optimize,
[  --enable-mobile-optimize
                          Enable mobile optimizations],
    MOZ_GFX_OPTIMIZE_MOBILE=1)

AC_SUBST(MOZ_GFX_OPTIMIZE_MOBILE)

if test "$MOZ_GFX_OPTIMIZE_MOBILE"; then
    # We ignore paint will resample on mobile for performance.
    # We may want to revisit this later.
    MOZ_IGNORE_PAINT_WILL_RESAMPLE=1

    AC_DEFINE(MOZ_GFX_OPTIMIZE_MOBILE)
    AC_DEFINE(MOZ_IGNORE_PAINT_WILL_RESAMPLE)
fi

dnl ========================================================
dnl = Enable code optimization. ON by default.
dnl ========================================================
if test -z "$MOZ_OPTIMIZE_FLAGS"; then
    MOZ_OPTIMIZE_FLAGS="-O"
fi

if test -z "$MOZ_OPTIMIZE_RUSTFLAGS"; then
    MOZ_OPTIMIZE_RUSTFLAGS="-O"
fi

MOZ_ARG_ENABLE_STRING(optimize,
[  --disable-optimize      Disable compiler optimization
  --enable-optimize=[OPT] Specify compiler optimization flags [OPT=-O]],
[ if test "$enableval" != "no"; then
    MOZ_OPTIMIZE=1
    if test -n "$enableval" -a "$enableval" != "yes"; then
        MOZ_OPTIMIZE_FLAGS=`echo "$enableval" | sed -e 's|\\\ | |g'`
        MOZ_OPTIMIZE=2
    fi
else
    MOZ_OPTIMIZE=
fi ], MOZ_OPTIMIZE=1)

MOZ_SET_FRAMEPTR_FLAGS

if test "$COMPILE_ENVIRONMENT"; then
if test -n "$MOZ_OPTIMIZE"; then
    AC_MSG_CHECKING([for valid C compiler optimization flags])
    _SAVE_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS $MOZ_OPTIMIZE_FLAGS"
    AC_TRY_COMPILE([#include <stdio.h>],
        [printf("Hello World\n");],
        _results=yes,
        _results=no)
    AC_MSG_RESULT([$_results])
    if test "$_results" = "no"; then
        AC_MSG_ERROR([These compiler flags for C are invalid: $MOZ_OPTIMIZE_FLAGS])
    fi
    CFLAGS=$_SAVE_CFLAGS
fi
fi # COMPILE_ENVIRONMENT

AC_SUBST(MOZ_OPTIMIZE)
AC_SUBST(MOZ_FRAMEPTR_FLAGS)
AC_SUBST(MOZ_OPTIMIZE_FLAGS)
AC_SUBST(MOZ_OPTIMIZE_RUSTFLAGS)
AC_SUBST(MOZ_OPTIMIZE_LDFLAGS)
AC_SUBST(MOZ_ALLOW_HEAP_EXECUTE_FLAGS)
AC_SUBST(MOZ_PGO)
AC_SUBST(MOZ_PGO_OPTIMIZE_FLAGS)

dnl ========================================================
dnl = Enable NS_StackWalk.
dnl ========================================================

# On Windows, NS_StackWalk will only work correctly if we have frame pointers
# available. That will only be true for non-optimized builds, debug builds or
# builds with --enable-profiling in the .mozconfig (which is turned on in
# Nightly by default.)
case "$OS_TARGET" in
WINNT)
    if test -z "$MOZ_OPTIMIZE" -o -n "$MOZ_PROFILING" -o -n "$MOZ_DEBUG"; then
        MOZ_STACKWALKING=1
    else
        MOZ_STACKWALKING=
    fi
    ;;
*)
    MOZ_STACKWALKING=1
    ;;
esac

if test -n "$MOZ_STACKWALKING"; then
    AC_DEFINE(MOZ_STACKWALKING)
fi

AC_SUBST(MOZ_STACKWALKING)

dnl ========================================================
dnl = Disable treating compiler warnings as errors
dnl ========================================================
if test -z "$MOZ_ENABLE_WARNINGS_AS_ERRORS"; then
   WARNINGS_AS_ERRORS=''
elif test "$GNU_CC"; then
    # Prevent the following GCC warnings from being treated as errors:
    # -Wmaybe-uninitialized - too many false positives
    # -Wdeprecated-declarations - we don't want our builds held hostage when a
    #   platform-specific API becomes deprecated.
    # -Wfree-nonheap-object - false positives during PGO
    # -Warray-bounds - false positives depending on optimization
    MOZ_C_SUPPORTS_WARNING(-W, no-error=maybe-uninitialized, ac_c_has_noerror_maybe_uninitialized)
    MOZ_CXX_SUPPORTS_WARNING(-W, no-error=maybe-uninitialized, ac_cxx_has_noerror_maybe_uninitialized)
    MOZ_C_SUPPORTS_WARNING(-W, no-error=deprecated-declarations, ac_c_has_noerror_deprecated_declarations)
    MOZ_CXX_SUPPORTS_WARNING(-W, no-error=deprecated-declarations, ac_cxx_has_noerror_deprecated_declarations)
    MOZ_C_SUPPORTS_WARNING(-W, no-error=array-bounds, ac_c_has_noerror_array_bounds)
    MOZ_CXX_SUPPORTS_WARNING(-W, no-error=array-bounds, ac_cxx_has_noerror_array_bounds)

    if test -n "$MOZ_PGO"; then
        MOZ_C_SUPPORTS_WARNING(-W, no-error=coverage-mismatch, ac_c_has_noerror_coverage_mismatch)
        MOZ_CXX_SUPPORTS_WARNING(-W, no-error=coverage-mismatch, ac_cxx_has_noerror_coverage_mismatch)
        MOZ_C_SUPPORTS_WARNING(-W, no-error=free-nonheap-object, ac_c_has_noerror_free_nonheap_object)
        MOZ_CXX_SUPPORTS_WARNING(-W, no-error=free-nonheap-object, ac_cxx_has_noerror_free_nonheap_object)
    fi
fi

dnl ========================================================
dnl = Disable runtime logging checks
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(logging,
[  --disable-logging       Disable logging facilities],
    NS_DISABLE_LOGGING=1,
    NS_DISABLE_LOGGING= )
if test "$NS_DISABLE_LOGGING"; then
    AC_DEFINE(NS_DISABLE_LOGGING)
else
    AC_DEFINE(MOZ_LOGGING)
    AC_DEFINE(FORCE_PR_LOG)
fi

dnl ========================================================
dnl = This will enable logging of addref, release, ctor, dtor.
dnl ========================================================
_ENABLE_LOGREFCNT=42
MOZ_ARG_ENABLE_BOOL(logrefcnt,
[  --enable-logrefcnt      Enable logging of refcounts (default=debug) ],
    _ENABLE_LOGREFCNT=1,
    _ENABLE_LOGREFCNT= )
if test "$_ENABLE_LOGREFCNT" = "1"; then
    AC_DEFINE(FORCE_BUILD_REFCNT_LOGGING)
elif test -z "$_ENABLE_LOGREFCNT"; then
    AC_DEFINE(NO_BUILD_REFCNT_LOGGING)
fi

dnl ========================================================
dnl moz_aproximate_location
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(approximate_location,
[ --enable-approximate-location    Enable approximate location ],
    MOZ_APPROX_LOCATION=1,
    MOZ_APPROX_LOCATION= )
if test -n "$MOZ_APPROX_LOCATION"; then
    AC_DEFINE(MOZ_APPROX_LOCATION)
fi

dnl ========================================================
dnl moz_gps_debug
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(gps_debug,
[ --enable-gps-debug    Enable gps specific debug messages ],
    MOZ_GPS_DEBUG=1,
    MOZ_GPS_DEBUG= )
if test -n "$MOZ_GPS_DEBUG"; then
    AC_DEFINE(MOZ_GPS_DEBUG)
fi
if test -n "$MOZ_DEBUG"; then
    AC_DEFINE(MOZ_GPS_DEBUG)
fi

dnl ========================================================
dnl moz_dump_painting
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(dump-painting,
[  --enable-dump-painting          Enable paint debugging.],
    MOZ_DUMP_PAINTING=1,
    MOZ_DUMP_PAINTING= )
if test -n "$MOZ_DUMP_PAINTING"; then
    AC_DEFINE(MOZ_DUMP_PAINTING)
    AC_DEFINE(MOZ_LAYERS_HAVE_LOG)
fi
if test -n "$MOZ_DEBUG"; then
    AC_DEFINE(MOZ_DUMP_PAINTING)
fi

dnl ========================================================
dnl = Enable DMD
dnl ========================================================

MOZ_ARG_ENABLE_BOOL(dmd,
[  --enable-dmd            Enable DMD; also enables jemalloc and replace-malloc],
    MOZ_DMD=1,
    MOZ_DMD= )

if test "$MOZ_DMD"; then
    AC_DEFINE(MOZ_DMD)

    if test "${CPU_ARCH}" = "arm"; then
        CFLAGS="$CFLAGS -funwind-tables"
        CXXFLAGS="$CXXFLAGS -funwind-tables"
    fi

    MOZ_MEMORY=1                        # DMD enables jemalloc
    MOZ_REPLACE_MALLOC=1                # DMD enables replace-malloc
fi
AC_SUBST(MOZ_DMD)

dnl ========================================================
dnl = Enable jemalloc
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(jemalloc,
[  --enable-jemalloc       Replace memory allocator with jemalloc],
    MOZ_MEMORY=1,
    MOZ_MEMORY=)

case "${OS_TARGET}" in
Android|WINNT|Darwin)
  MOZ_GLUE_IN_PROGRAM=
  ;;
*)
  dnl On !Android !Windows !OSX, we only want to link executables against mozglue
  MOZ_GLUE_IN_PROGRAM=1
  AC_DEFINE(MOZ_GLUE_IN_PROGRAM)
  ;;
esac

dnl ========================================================
dnl = Enable dynamic replacement of malloc implementation
dnl ========================================================
if test -n "$NIGHTLY_BUILD" -a -n "$MOZ_MEMORY"; then
  # Enable on central for the debugging opportunities it adds.
  MOZ_REPLACE_MALLOC=1
fi
MOZ_ARG_ENABLE_BOOL(replace-malloc,
[  --enable-replace-malloc   Enable ability to dynamically replace the malloc implementation],
    MOZ_REPLACE_MALLOC=1,
    MOZ_REPLACE_MALLOC= )

if test -n "$MOZ_REPLACE_MALLOC" -a -z "$MOZ_MEMORY"; then
    dnl We don't want to enable jemalloc unconditionally because it may be a
    dnl deliberate choice not to enable it (bug 702250, for instance)
    AC_MSG_ERROR([--enable-replace-malloc requires --enable-jemalloc])
elif test -n "$MOZ_REPLACE_MALLOC"; then
    AC_DEFINE(MOZ_REPLACE_MALLOC)
    MOZ_NATIVE_JEMALLOC=

    dnl Replace-malloc Mac linkage quirks
    if test -n "$MACOSX_DEPLOYMENT_TARGET"; then
        AC_CACHE_CHECK([how to do weak dynamic linking],
            ac_cv_weak_dynamic_linking,
            [echo 'extern void foo() __attribute__((weak_import));int bar() { if (foo) foo(); return 0; }' > conftest.c
             if AC_TRY_COMMAND([${CC-cc} -o conftest${DLL_SUFFIX} $CFLAGS -dynamiclib $LDFLAGS -Wl,-U,_foo conftest.c $LIBS 1>&5]) &&
                test -s conftest${DLL_SUFFIX}; then
                 dnl There are several ways the linker can put link edit rules in a binary:
                 dnl - classic info only (for OSX < 10.6)
                 dnl - dyld info only
                 dnl - both
                 if "$OTOOL" -l conftest${DLL_SUFFIX} 2> /dev/null | grep "LC_DYLD_INFO_ONLY" > /dev/null; then
                     _CLASSIC_INFO=
                 else
                     _CLASSIC_INFO=1
                 fi
                 if "$OTOOL" -l conftest${DLL_SUFFIX} 2> /dev/null | grep "LC_DYLD_INFO" > /dev/null; then
                     _DYLD_INFO=1
                 else
                     _DYLD_INFO=
                 fi
                 dnl With classic info, we need to build with -flat_namespace.
                 dnl With dyld info, Xcode 4.5 does the right thing without additional flags,
                 dnl but Xcode < 4.5 requires a dummy library and -flat_namespace because it
                 dnl forgets to set the weak flag in the dyld info.
                 dnl See http://glandium.org/blog/?p=2764 for more details.
                 dnl
                 dnl Values for ac_cv_weak_dynamic_linking, and subsequently
                 dnl MOZ_REPLACE_MALLOC_LINKAGE are thus:
                 dnl - "flat namespace" when -flat_namespace alone is needed
                 dnl - "dummy library" when a dummy library and -flat_namespace are needed
                 dnl - "compiler support" when nothing is needed
                 if test -n "$_DYLD_INFO" && dyldinfo -bind conftest${DLL_SUFFIX} 2> /dev/null | grep "_foo (weak import)" > /dev/null; then
                     if test -n "$_CLASSIC_INFO"; then
                         ac_cv_weak_dynamic_linking="flat namespace"
                     else
                         ac_cv_weak_dynamic_linking="compiler support"
                     fi
                 else
                     if test -n "$_DYLD_INFO"; then
                         ac_cv_weak_dynamic_linking="dummy library"
                     else
                         ac_cv_weak_dynamic_linking="flat namespace"
                     fi
                 fi
             else
                 AC_ERROR([couldn't compile a simple C file])
             fi
             rm -rf conftest*])
        MOZ_REPLACE_MALLOC_LINKAGE="$ac_cv_weak_dynamic_linking"
    fi
fi
AC_SUBST(MOZ_REPLACE_MALLOC)
AC_SUBST(MOZ_REPLACE_MALLOC_LINKAGE)

dnl ========================================================
dnl = Jemalloc build setup
dnl ========================================================
if test -z "$MOZ_MEMORY"; then
  if test -n "$MOZ_JEMALLOC4" -a -z "$MOZ_REPLACE_MALLOC"; then
    MOZ_NATIVE_JEMALLOC=1
    AC_CHECK_FUNCS(mallctl nallocx,,
      [MOZ_NATIVE_JEMALLOC=
       break])
    if test -n "$MOZ_NATIVE_JEMALLOC"; then
      MOZ_MEMORY=1
      AC_DEFINE(MOZ_MEMORY)
      AC_DEFINE(MOZ_JEMALLOC4)
      AC_DEFINE(MOZ_NATIVE_JEMALLOC)
    fi
  fi
  case "${target}" in
    *-mingw*)
      if test -z "$WIN32_REDIST_DIR" -a -z "$MOZ_DEBUG"; then
        AC_MSG_WARN([When not building jemalloc, you need to set WIN32_REDIST_DIR to the path to the Visual C++ Redist (usually VCINSTALLDIR\redist\x86\Microsoft.VC80.CRT, for VC++ v8) if you intend to distribute your build.])
      fi
      ;;
  esac
else
  AC_DEFINE(MOZ_MEMORY)
  if test -n "$NIGHTLY_BUILD"; then
    MOZ_JEMALLOC4=1
  fi
  if test -n "$MOZ_JEMALLOC4"; then
    AC_DEFINE(MOZ_JEMALLOC4)
  fi
  if test "x$MOZ_DEBUG" = "x1"; then
    AC_DEFINE(MOZ_MEMORY_DEBUG)
  fi
  dnl The generic feature tests that determine how to compute ncpus are long and
  dnl complicated.  Therefore, simply define special cpp variables for the
  dnl platforms we have special knowledge of.
  case "${target}" in
  *-darwin*)
    AC_DEFINE(MOZ_MEMORY_DARWIN)
    ;;
  *-*freebsd*)
    AC_DEFINE(MOZ_MEMORY_BSD)
    ;;
  *-android*|*-linuxandroid*)
    AC_DEFINE(MOZ_MEMORY_LINUX)
    AC_DEFINE(MOZ_MEMORY_ANDROID)
    if test -n "$gonkdir"; then
      AC_DEFINE(MOZ_MEMORY_GONK)
    fi
    ;;
  *-*linux*)
    AC_DEFINE(MOZ_MEMORY_LINUX)
    ;;
  *-netbsd*)
    AC_DEFINE(MOZ_MEMORY_BSD)
    ;;
  *-solaris*)
    AC_DEFINE(MOZ_MEMORY_SOLARIS)
    ;;
  *-mingw*)
    AC_DEFINE(MOZ_MEMORY_WINDOWS)
    export MOZ_NO_DEBUG_RTL=1
    WIN32_CRT_LIBS="msvcrt.lib msvcprt.lib"
    dnl Look for a broken crtdll.obj
    WIN32_CRTDLL_FULLPATH=`lib -nologo -list $WIN32_CRT_LIBS | grep crtdll\\.obj`
    lib -NOLOGO -OUT:crtdll.obj $WIN32_CRT_LIBS -EXTRACT:$WIN32_CRTDLL_FULLPATH
    if grep -q '__imp__\{0,1\}free' crtdll.obj; then
      MOZ_CRT=1
    fi
    rm crtdll.obj
    ;;
  *)
    AC_MSG_ERROR([--enable-jemalloc not supported on ${target}])
    ;;
  esac
fi # MOZ_MEMORY
AC_SUBST(MOZ_MEMORY)
AC_SUBST(MOZ_JEMALLOC4)
AC_SUBST(MOZ_NATIVE_JEMALLOC)
AC_SUBST(MOZ_CRT)
export MOZ_CRT
AC_SUBST(MOZ_GLUE_IN_PROGRAM)
AC_SUBST_LIST(WIN32_CRT_LIBS)

# Allow the application to provide a subconfigure script.
# This should be after 'export MOZ_NO_DEBUG_RTL=1' since
# ldap/c-sdk/configure refers to the enviroment value.
if test -f "${srcdir}/${MOZ_BUILD_APP}/configure.in" ; then
  do_output_subdirs() {
    if test -n "$_subconfigure_subdirs"; then
      AC_MSG_ERROR([Cannot specify more than one sub-sub-configure])
     fi
    _subconfigure_subdir="$1"
    _subconfigure_config_args="$ac_configure_args"
  }
  tmpscript=`$PYTHON -c 'import os, tempfile; print tempfile.mktemp(prefix="subscript.").replace(os.sep, "/")'` || exit 1
  m4 "${srcdir}/build/autoconf/subconfigure.m4" \
     "${srcdir}/build/autoconf/altoptions.m4" \
     "${srcdir}/${MOZ_BUILD_APP}/configure.in" > $tmpscript
  . $tmpscript
  rm -f $tmpscript
fi

dnl We need to wrap dlopen and related functions on Android because we use
dnl our own linker.
if test "$OS_TARGET" = Android; then
    MOZ_GLUE_WRAP_LDFLAGS="${MOZ_GLUE_WRAP_LDFLAGS} -Wl,--wrap=PR_GetEnv,--wrap=PR_SetEnv"
    if test "$MOZ_WIDGET_TOOLKIT" = gonk -a -n "$MOZ_NUWA_PROCESS"; then
        MOZ_GLUE_WRAP_LDFLAGS="${MOZ_GLUE_WRAP_LDFLAGS} -Wl,--wrap=pthread_create,--wrap=epoll_wait,--wrap=poll,--wrap=pthread_cond_timedwait,--wrap=pthread_cond_wait,--wrap=epoll_create,--wrap=epoll_ctl,--wrap=close,--wrap=pthread_key_create,--wrap=pthread_key_delete,--wrap=socketpair,--wrap=pthread_self,--wrap=pthread_mutex_lock,--wrap=pthread_mutex_trylock,--wrap=pthread_join,--wrap=pipe,--wrap=pipe2"
    fi
    if test "$MOZ_WIDGET_TOOLKIT" = android -a "$MOZ_ANDROID_MIN_SDK_VERSION" -lt 11; then
        MOZ_GLUE_WRAP_LDFLAGS="${MOZ_GLUE_WRAP_LDFLAGS} -Wl,--wrap=getaddrinfo,--wrap=freeaddrinfo,--wrap=gai_strerror"
    fi
fi

AC_SUBST_LIST(MOZ_GLUE_WRAP_LDFLAGS)
export MOZ_GLUE_WRAP_LDFLAGS

dnl ========================================================
dnl = Enable static checking using gcc-dehydra
dnl ========================================================

MOZ_ARG_WITH_STRING(static-checking,
[  --with-static-checking=path/to/gcc_dehydra.so
                          Enable static checking of code using GCC-dehydra],
    DEHYDRA_PATH=$withval,
    DEHYDRA_PATH= )

if test -n "$DEHYDRA_PATH"; then
    if test ! -f "$DEHYDRA_PATH"; then
        AC_MSG_ERROR([The dehydra plugin is not at the specified path.])
    fi
    AC_DEFINE(NS_STATIC_CHECKING)
fi
AC_SUBST(DEHYDRA_PATH)

dnl ========================================================
dnl = Enable using the clang plugin to build
dnl ========================================================

MOZ_CONFIG_CLANG_PLUGIN

dnl ========================================================
dnl = Enable stripping of libs & executables
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(strip,
[  --enable-strip          Enable stripping of libs & executables ],
    ENABLE_STRIP=1,
    ENABLE_STRIP= )

dnl ========================================================
dnl = Enable stripping of libs & executables when packaging
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(install-strip,
[  --enable-install-strip  Enable stripping of libs & executables when packaging ],
    PKG_SKIP_STRIP= ,
    PKG_SKIP_STRIP=1)

dnl ========================================================
dnl = --disable-elf-hack
dnl ========================================================

USE_ELF_HACK=1
MOZ_ARG_DISABLE_BOOL(elf-hack,
[  --disable-elf-hack      Disable elf hacks],
    [USE_ELF_HACK=],
    [USE_ELF_HACK=1])

# Only enable elfhack where supported
if test "$USE_ELF_HACK" = 1; then
    case "${HOST_OS_ARCH},${OS_ARCH}" in
    Linux,Linux)
        case "${CPU_ARCH}" in
        arm | x86 | x86_64)
            USE_ELF_HACK=1
            ;;
        *)
            USE_ELF_HACK=
            ;;
        esac
        ;;
    *)
        USE_ELF_HACK=
        ;;
    esac
fi

if test -n "$COMPILE_ENVIRONMENT" -a -n "$USE_ELF_HACK"; then
    dnl PT_GNU_RELRO segment makes the dynamic linker set a read-only flag on
    dnl memory addresses it maps to. The result is that by the time elfhack
    dnl kicks in, it is not possible to apply relocations because of that,
    dnl thus elfhack effectively skips relocations inside the PT_GNU_RELRO
    dnl segment. It makes elfhack mostly useless, so considering the problems
    dnl we have we PT_GNU_RELRO (e.g. bug 664366), and until elfhack can deal
    dnl with PT_GNU_RELRO segments, it's just simpler to disable elfhack when
    dnl the linker creates PT_GNU_RELRO segments. However, when we do want
    dnl elfhack enabled, disable PT_GNU_RELRO instead.
    AC_CACHE_CHECK([whether linker creates PT_GNU_RELRO segments],
        LINK_WITH_PT_GNU_RELRO,
        [echo "int main() {return 0;}" > conftest.${ac_ext}
         if AC_TRY_COMMAND(${CC-cc} -o conftest${ac_exeext} $LDFLAGS conftest.${ac_ext} $LIBS 1>&2) &&
            test -s conftest${ac_exeext}; then
            if ${TOOLCHAIN_PREFIX}readelf -l conftest${ac_exeext} | grep GNU_RELRO > /dev/null; then
                LINK_WITH_PT_GNU_RELRO=yes
            else
                LINK_WITH_PT_GNU_RELRO=no
            fi
         else
             dnl We really don't expect to get here, but just in case
             AC_ERROR([couldn't compile a simple C file])
         fi
         rm -rf conftest*])
    if test "$LINK_WITH_PT_GNU_RELRO" = yes; then
        if test "$USE_ELF_HACK" = F; then
            AC_MSG_CHECKING([for -z norelro option to ld])
            _SAVE_LDFLAGS=$LDFLAGS
            LDFLAGS="$LDFLAGS -Wl,-z,norelro"
            AC_TRY_LINK(,,AC_MSG_RESULT([yes])
                        [NSPR_LDFLAGS="$NSPR_LDFLAGS -Wl,-z,norelro"],
                        AC_ERROR([--enable-elf-hack is not compatible with a linker creating a PT_GNU_RELRO segment and that doesn't support the "-z norelro" option.]))
            USE_ELF_HACK=1
        else
            AC_MSG_WARN([Disabling elfhack])
            USE_ELF_HACK=
        fi
    fi
fi # COMPILE_ENVIRONMENT and others.

dnl ========================================================
dnl = libstdc++ compatibility hacks
dnl ========================================================

STDCXX_COMPAT=
MOZ_ARG_ENABLE_BOOL(stdcxx-compat,
[  --enable-stdcxx-compat  Enable compatibility with older libstdc++],
    STDCXX_COMPAT=1)

if test -n "$STDCXX_COMPAT"; then
   eval $(CXX="$CXX" HOST_CXX="$HOST_CXX" $PYTHON -m mozbuild.configure.libstdcxx)
   AC_SUBST(MOZ_LIBSTDCXX_TARGET_VERSION)
   AC_SUBST(MOZ_LIBSTDCXX_HOST_VERSION)
   CXXFLAGS="$CXXFLAGS -D_GLIBCXX_USE_CXX11_ABI=0"
   HOST_CXXFLAGS="$HOST_CXXFLAGS -D_GLIBCXX_USE_CXX11_ABI=0"
fi

dnl ========================================================
dnl = frontend JS debug mode
dnl ========================================================

MOZ_ARG_ENABLE_BOOL(debug-js-modules,
[  --enable-debug-js-modules  Enable debug mode for frontend JS libraries],
   DEBUG_JS_MODULES=1,
   DEBUG_JS_MODULES=)

AC_SUBST(DEBUG_JS_MODULES)

dnl ========================================================
dnl =
dnl = Profiling and Instrumenting
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Profiling and Instrumenting)

dnl ========================================================
dnl = Enable TaskTracer
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(tasktracer,
[  --enable-tasktracer       Set compile flags necessary for using TaskTracer],
    MOZ_TASK_TRACER=1,
    MOZ_TASK_TRACER= )
if test "$MOZ_WIDGET_TOOLKIT" = "gonk" -a -n "$MOZ_TASK_TRACER"; then
    AC_DEFINE(MOZ_TASK_TRACER)
    AC_SUBST(MOZ_TASK_TRACER)
fi

dnl ========================================================
dnl Turn on reflow counting
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(reflow-perf,
[  --enable-reflow-perf    Enable reflow performance tracing],
    MOZ_REFLOW_PERF=1,
    MOZ_REFLOW_PERF= )
if test -n "$MOZ_REFLOW_PERF"; then
    AC_DEFINE(MOZ_REFLOW_PERF)
fi

dnl ========================================================
dnl = Horizon build options - set default preferences for
dnl   the horizon project. Horizon is a browser built on
dnl   top of the graphene runtime.
dnl ========================================================
if test -n "$MOZ_HORIZON"; then
    AC_DEFINE(MOZ_HORIZON)
fi
AC_SUBST(MOZ_HORIZON)

dnl ========================================================
dnl = Offer a way to disable the startup cache
dnl ========================================================

MOZ_ARG_DISABLE_BOOL(startupcache,
[  --disable-startupcache          Disable startup cache ],
    MOZ_DISABLE_STARTUPCACHE=1,
    MOZ_DISABLE_STARTUPCACHE=)

dnl bug 988880: disable startup cache on b2g
if test -n "$MOZ_B2G"; then
  MOZ_DISABLE_STARTUPCACHE=1
fi
if test -n "$MOZ_DISABLE_STARTUPCACHE"; then
  AC_DEFINE(MOZ_DISABLE_STARTUPCACHE)
fi
AC_SUBST(MOZ_DISABLE_STARTUPCACHE)

dnl ========================================================
dnl = Enable packaging Gaia with B2G desktop and b2gdroid
dnl ========================================================
if test x"$MOZ_WIDGET_TOOLKIT" != x"gonk"; then
    if test -n "$GAIADIR" -a ! -d "$GAIADIR" ; then
        AC_MSG_ERROR([GAIADIR '$GAIADIR' isn't a valid directory])
    fi

    AC_SUBST(GAIADIR)
    if test -n "$GAIADIR" ; then
        AC_DEFINE(PACKAGE_GAIA)
    fi

    if test -n "$FXOS_SIMULATOR" -a -z "$GAIADIR" ; then
        AC_MSG_ERROR([FXOS_SIMULATOR=1 requires GAIADIR to be defined])
    fi

    if test "$MOZ_BUILD_APP" = "mobile/android/b2gdroid" -a -z "$GAIADIR"; then
        AC_MSG_ERROR([GAIADIR needs to be set in b2gdroid builds])
    fi

    if test -n "$FXOS_SIMULATOR" ; then
        AC_DEFINE(FXOS_SIMULATOR)
        AC_SUBST(FXOS_SIMULATOR)
    fi
fi

dnl ========================================================
dnl = Enable Radio Interface for B2G (Gonk usually)
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(b2g-ril,
[  --enable-b2g-ril      Set compile flags necessary for testing B2G Radio Interface Layer via network sockets ],
    MOZ_B2G_RIL=1,
    MOZ_B2G_RIL=,
    MOZ_B2G_RIL=$_PLATFORM_HAVE_RIL )
if test -n "$MOZ_B2G_RIL"; then
    if test -n "$_PLATFORM_HAVE_RIL"; then
        AC_DEFINE(MOZ_B2G_RIL)
    else
        AC_MSG_ERROR([b2g-ril cannot be enabled because target platform doesn't support it.])
    fi
fi
AC_SUBST(MOZ_B2G_RIL)

dnl ========================================================
dnl = Enable Radio FM for B2G (Gonk usually)
dnl ========================================================
if test -n "$MOZ_B2G_FM"; then
    AC_DEFINE(MOZ_B2G_FM)
fi
AC_SUBST(MOZ_B2G_FM)

dnl ========================================================
dnl = Enable Bluetooth Interface for B2G (Gonk usually)
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(b2g-bt,
[  --enable-b2g-bt      Set compile flags necessary for compiling Bluetooth API for B2G ],
    MOZ_B2G_BT=1,
    MOZ_B2G_BT= )
if test -n "$MOZ_B2G_BT"; then
    AC_DEFINE(MOZ_B2G_BT)
fi
AC_SUBST(MOZ_B2G_BT)
AC_SUBST(MOZ_B2G_BT_BLUEZ)
AC_SUBST(MOZ_B2G_BT_DAEMON)

dnl ========================================================
dnl = Enable NFC Interface for B2G (Gonk usually)
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(nfc,
[  --enable-nfc         Set compile flags necessary for compiling NFC API ],
    MOZ_NFC=1,
    MOZ_NFC= )
if test -n "$MOZ_NFC"; then
   AC_DEFINE(MOZ_NFC)
fi
AC_SUBST(MOZ_NFC)

dnl ========================================================
dnl = Enable Pico Speech Synthesis (Gonk usually)
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(synth-pico,
[  --enable-synth-pico  Set compile flags necessary for compiling Pico Web Speech API ],
    MOZ_SYNTH_PICO=1,
    MOZ_SYNTH_PICO= )
if test -n "$MOZ_SYNTH_PICO"; then
    AC_DEFINE(MOZ_SYNTH_PICO)
fi
AC_SUBST(MOZ_SYNTH_PICO)

dnl ========================================================
dnl = Enable Support for Time Manager API
dnl ========================================================
if test -n "$MOZ_TIME_MANAGER"; then
    AC_DEFINE(MOZ_TIME_MANAGER)
fi
AC_SUBST(MOZ_TIME_MANAGER)

dnl ========================================================
dnl = Enable Camera Interface for B2G (Gonk usually)
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(b2g-camera,
[  --enable-b2g-camera      Set compile flags necessary for compiling camera API for B2G ],
    MOZ_B2G_CAMERA=1,
    MOZ_B2G_CAMERA= )
if test -n "$MOZ_B2G_CAMERA"; then
   AC_DEFINE(MOZ_B2G_CAMERA)
fi
AC_SUBST(MOZ_B2G_CAMERA)

dnl ========================================================
dnl = Enable Support for SimplePush (Gonk usually)
dnl   This will disable the Push API.
dnl ========================================================
if test -n "$MOZ_SIMPLEPUSH"; then
    AC_DEFINE(MOZ_SIMPLEPUSH)
fi
AC_SUBST(MOZ_SIMPLEPUSH)

dnl ========================================================
dnl = Enable Support for Payment API
dnl ========================================================
if test -n "$MOZ_PAY"; then
    AC_DEFINE(MOZ_PAY)
fi
AC_SUBST(MOZ_PAY)

dnl ========================================================
dnl = Enable Browser Support for Activities
dnl ========================================================
if test -n "$MOZ_ACTIVITIES"; then
    AC_DEFINE(MOZ_ACTIVITIES)
fi
AC_SUBST(MOZ_ACTIVITIES)

dnl ========================================================
dnl = Enable Support for AudioChannelManager API
dnl ========================================================
if test -n "$MOZ_AUDIO_CHANNEL_MANAGER"; then
    AC_DEFINE(MOZ_AUDIO_CHANNEL_MANAGER)
fi
AC_SUBST(MOZ_AUDIO_CHANNEL_MANAGER)

dnl ========================================================
dnl = Enable Support for Secure Element API
dnl ========================================================
   MOZ_SECUREELEMENT=1,
if test -n "$MOZ_SECUREELEMENT"; then
   AC_DEFINE(MOZ_SECUREELEMENT)
fi
 AC_SUBST(MOZ_SECUREELEMENT)

dnl ========================================================
dnl = Support for demangling undefined symbols
dnl ========================================================
if test -z "$SKIP_LIBRARY_CHECKS"; then
    AC_LANG_SAVE
    AC_LANG_CPLUSPLUS
    AC_CHECK_FUNCS(__cxa_demangle, HAVE_DEMANGLE=1, HAVE_DEMANGLE=)
    AC_LANG_RESTORE
fi

# Demangle only for debug or DMD builds
MOZ_DEMANGLE_SYMBOLS=
if test "$HAVE_DEMANGLE" && test "$MOZ_DEBUG" -o "$MOZ_DMD"; then
    MOZ_DEMANGLE_SYMBOLS=1
    AC_DEFINE(MOZ_DEMANGLE_SYMBOLS)
fi
AC_SUBST(MOZ_DEMANGLE_SYMBOLS)

dnl ========================================================
dnl = Support for gcc stack unwinding (from gcc 3.3)
dnl ========================================================
if test -z "$SKIP_LIBRARY_CHECKS"; then
    AC_LANG_SAVE
    AC_LANG_CPLUSPLUS
    MOZ_CHECK_HEADER(unwind.h, AC_CHECK_FUNCS(_Unwind_Backtrace))
    AC_LANG_RESTORE
fi

dnl ========================================================
dnl JIT observers
dnl ========================================================

MOZ_ARG_WITH_STRING(jitreport-granularity,
[  --jitreport-granularity=N
                           Default granularity at which to report JIT code
                           to external tools
                             0 - no info
                             1 - code ranges for whole functions only
                             2 - per-line information
                             3 - per-op information],
  JITREPORT_GRANULARITY=$withval,
  JITREPORT_GRANULARITY=3)

AC_DEFINE_UNQUOTED(JS_DEFAULT_JITREPORT_GRANULARITY, $JITREPORT_GRANULARITY)

dnl ========================================================
dnl = Disable Mozilla's versions of RIL and Geolocation
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(mozril-geoloc,
[  --disable-mozril-geoloc         Disable Mozilla's RIL and geolocation],
    DISABLE_MOZ_RIL_GEOLOC=1,
    DISABLE_MOZ_RIL_GEOLOC= )
if test -n "$DISABLE_MOZ_RIL_GEOLOC"; then
   AC_DEFINE(DISABLE_MOZ_RIL_GEOLOC)
fi
AC_SUBST(DISABLE_MOZ_RIL_GEOLOC)

dnl ========================================================
dnl =
dnl = Misc. Options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Misc. Options)

dnl ========================================================
dnl update xterm title
dnl ========================================================
MOZ_ARG_ENABLE_BOOL(xterm-updates,
[  --enable-xterm-updates  Update XTERM titles with current command.],
    MOZ_UPDATE_XTERM=1,
    MOZ_UPDATE_XTERM= )

dnl =========================================================
dnl = Chrome format
dnl =========================================================
MOZ_ARG_ENABLE_STRING([chrome-format],
[  --enable-chrome-format=jar|flat|omni
                          Select FORMAT of chrome files during packaging],
    MOZ_CHROME_FILE_FORMAT=`echo $enableval | tr A-Z a-z`)

if test -z "$MOZ_CHROME_FILE_FORMAT"; then
    MOZ_CHROME_FILE_FORMAT=jar
fi

if test "$MOZ_CHROME_FILE_FORMAT" = "symlink"; then
    AC_MSG_ERROR([--enable-chrome-format=symlink has been deprecated. It is now used by default in $DIST/bin on platforms that support it])
fi

if test "$MOZ_CHROME_FILE_FORMAT" != "jar" &&
    test "$MOZ_CHROME_FILE_FORMAT" != "flat" &&
    test "$MOZ_CHROME_FILE_FORMAT" != "omni"; then
    AC_MSG_ERROR([--enable-chrome-format must be set to either jar, flat, or omni])
fi

dnl =========================================================
dnl Omnijar packaging (bug 552121)
dnl =========================================================
dnl Omnijar packaging is compatible with flat packaging.
dnl In unpackaged builds, omnijar looks for files as if
dnl things were flat packaged. After packaging, all files
dnl are loaded from a single jar. MOZ_CHROME_FILE_FORMAT
dnl is set to flat since putting files into jars is only
dnl done during packaging with omnijar.
if test "$MOZ_CHROME_FILE_FORMAT" = "omni"; then
    MOZ_OMNIJAR=1
    AC_DEFINE(MOZ_OMNIJAR)
fi
MOZ_PACKAGER_FORMAT="$MOZ_CHROME_FILE_FORMAT"
if test "$OS_ARCH" = "WINNT" -o "$MOZ_WIDGET_TOOLKIT" = "android"; then
    MOZ_CHROME_FILE_FORMAT=flat
else
    MOZ_CHROME_FILE_FORMAT=symlink
fi

if test "$MOZ_WIDGET_TOOLKIT" = "android"; then
    dnl Fennec's static resources live in the assets/ folder of the
    dnl APK.  Adding a path to the name here works because we only
    dnl have one omnijar file in the final package (which is not the
    dnl case on desktop), and necessitates some contortions during
    dnl packaging so that the resources in the omnijar are considered
    dnl as rooted at / and not as rooted at assets/ (which again is
    dnl not the case on desktop: there are omnijars rooted at webrtc/,
    dnl etc). packager.mk handles changing the rooting of the single
    dnl omnijar.
    OMNIJAR_NAME=assets/omni.ja
else
    OMNIJAR_NAME=omni.ja
fi

AC_SUBST(OMNIJAR_NAME)
AC_SUBST(MOZ_OMNIJAR)
AC_SUBST(MOZ_PACKAGER_FORMAT)

dnl ========================================================
dnl = Define default location for MOZILLA_FIVE_HOME
dnl ========================================================
MOZ_ARG_WITH_STRING(default-mozilla-five-home,
[  --with-default-mozilla-five-home
                          Set the default value for MOZILLA_FIVE_HOME],
[ val=`echo $withval`
  AC_DEFINE_UNQUOTED(MOZ_DEFAULT_MOZILLA_FIVE_HOME,"$val") ])

dnl ========================================================
dnl = Location of the mozilla user directory (default is ~/.mozilla).],
dnl ========================================================
MOZ_ARG_WITH_STRING(user-appdir,
[  --with-user-appdir=DIR  Set user-specific appdir (default=.mozilla)],
[ val=`echo $withval`
if echo "$val" | grep "\/" >/dev/null; then
    AC_MSG_ERROR("Homedir must be single relative path.")
else
    MOZ_USER_DIR="$val"
fi])

AC_DEFINE_UNQUOTED(MOZ_USER_DIR,"$MOZ_USER_DIR")

dnl ========================================================
dnl = Doxygen configuration
dnl ========================================================
dnl Use commas to specify multiple dirs to this arg
MOZ_DOC_INPUT_DIRS='./dist/include ./dist/idl'
MOZ_ARG_WITH_STRING(doc-input-dirs,
[  --with-doc-input-dirs=DIRS
                          Header/idl dirs to create docs from],
[ MOZ_DOC_INPUT_DIRS=`echo "$withval" | sed "s/,/ /g"` ] )
AC_SUBST(MOZ_DOC_INPUT_DIRS)

dnl Use commas to specify multiple dirs to this arg
MOZ_DOC_INCLUDE_DIRS='./dist/include ./dist/include/nspr'
MOZ_ARG_WITH_STRING(doc-include-dirs,
[  --with-doc-include-dirs=DIRS
                          Include dirs to preprocess doc headers],
[ MOZ_DOC_INCLUDE_DIRS=`echo "$withval" | sed "s/,/ /g"` ] )
AC_SUBST(MOZ_DOC_INCLUDE_DIRS)

MOZ_DOC_OUTPUT_DIR='./dist/docs'
MOZ_ARG_WITH_STRING(doc-output-dir,
[  --with-doc-output-dir=DIR
                          Dir to generate docs into],
[ MOZ_DOC_OUTPUT_DIR=$withval ] )
AC_SUBST(MOZ_DOC_OUTPUT_DIR)

if test -z "$SKIP_COMPILER_CHECKS"; then
dnl ========================================================
dnl =
dnl = Compiler Options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Compiler Options)

dnl ========================================================
dnl Check for gcc -pipe support
dnl ========================================================
AC_MSG_CHECKING([for -pipe support])
if test -n "$GNU_CC" -a -n "$GNU_CXX"; then
    dnl Any gcc that supports firefox supports -pipe.
    CFLAGS="$CFLAGS -pipe"
    CXXFLAGS="$CXXFLAGS -pipe"
    AC_MSG_RESULT([yes])
else
    AC_MSG_RESULT([no])
fi

dnl ========================================================
dnl Profile guided optimization (gcc checks)
dnl ========================================================
dnl Test for profiling options
dnl Under gcc 3.4+, use -fprofile-generate/-fprofile-use

_SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fprofile-generate -fprofile-correction"

AC_MSG_CHECKING([whether C compiler supports -fprofile-generate])
AC_TRY_COMPILE([], [return 0;],
               [ PROFILE_GEN_CFLAGS="-fprofile-generate"
                 result="yes" ], result="no")
AC_MSG_RESULT([$result])

if test $result = "yes"; then
  PROFILE_GEN_LDFLAGS="-fprofile-generate"
  PROFILE_USE_CFLAGS="-fprofile-use -fprofile-correction -Wcoverage-mismatch"
  PROFILE_USE_LDFLAGS="-fprofile-use"
fi

CFLAGS="$_SAVE_CFLAGS"

if test -n "$INTEL_CC"; then
  PROFILE_GEN_CFLAGS="-prof-gen -prof-dir ."
  PROFILE_GEN_LDFLAGS=
  PROFILE_USE_CFLAGS="-prof-use -prof-dir ."
  PROFILE_USE_LDFLAGS=
fi

dnl Sun Studio on Solaris
if test "$SOLARIS_SUNPRO_CC"; then
  PROFILE_GEN_CFLAGS="-xprofile=collect:$_objdir/$enable_application"
  PROFILE_GEN_LDFLAGS="-xprofile=collect:$_objdir/$enable_application"
  PROFILE_USE_CFLAGS="-xprofile=use:$_objdir/$enable_application"
  PROFILE_USE_LDFLAGS="-xprofile=use:$_objdir/$enable_application"
fi

AC_SUBST(PROFILE_GEN_CFLAGS)
AC_SUBST(PROFILE_GEN_LDFLAGS)
AC_SUBST(PROFILE_USE_CFLAGS)
AC_SUBST(PROFILE_USE_LDFLAGS)

dnl =============================================
dnl Support for -fno-integrated-as (recent clang)
dnl =============================================
dnl Under clang 3.4+, use -fno-integrated-as to
dnl build libvpx's vp8_asm_enc_offsets.c

_SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fno-integrated-as -S"

AC_MSG_CHECKING([whether C compiler supports -fno-integrated-as])
AC_TRY_COMPILE([], [return 0;],
               [ NO_INTEGRATED_AS_CFLAGS="-fno-integrated-as"
                 result="yes" ], result="no")
AC_MSG_RESULT([$result])

CFLAGS="$_SAVE_CFLAGS"

AC_SUBST(NO_INTEGRATED_AS_CFLAGS)

fi # ! SKIP_COMPILER_CHECKS

AC_DEFINE(CPP_THROW_NEW, [throw()])
AC_LANG_C

if test "$COMPILE_ENVIRONMENT"; then
MOZ_EXPAND_LIBS
fi # COMPILE_ENVIRONMENT

dnl ========================================================
dnl =
dnl = Build depencency options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Build dependencies)

if test "$GNU_CC" -a "$GNU_CXX"; then
  _DEPEND_CFLAGS='-MD -MP -MF $(MDDEPDIR)/$(@F).pp'
dnl Sun Studio on Solaris use -xM instead of -MD, see config/rules.mk
elif test "$SOLARIS_SUNPRO_CC"; then
  _DEPEND_CFLAGS=
else
  dnl Don't override this for MSVC
  if test -z "$_WIN32_MSVC"; then
    _USE_CPP_INCLUDE_FLAG=
    _DEFINES_CFLAGS='$(ACDEFINES) -D_MOZILLA_CONFIG_H_ -DMOZILLA_CLIENT'
    _DEFINES_CXXFLAGS='$(ACDEFINES) -D_MOZILLA_CONFIG_H_ -DMOZILLA_CLIENT'
  else
    echo '#include <stdio.h>' > dummy-hello.c
    changequote(,)
    dnl This output is localized, split at the first double space or colon and space.
    _CL_PREFIX_REGEX="^\([^:]*:.*[ :] \)\(.*\\\stdio.h\)$"
    CL_INCLUDES_PREFIX=`${CC} -showIncludes -c -Fonul dummy-hello.c 2>&1 | sed -ne 's/'"$_CL_PREFIX_REGEX"'/\1/p'`
    _CL_STDIO_PATH=`${CC} -showIncludes -c -Fonul dummy-hello.c 2>&1 | sed -ne 's/'"$_CL_PREFIX_REGEX"'/\2/p'`
    changequote([,])
    if ! test -e "$_CL_STDIO_PATH"; then
        AC_MSG_ERROR([Unable to parse cl -showIncludes prefix. This compiler's locale has an unsupported formatting.])
    fi
    if test -z "$CL_INCLUDES_PREFIX"; then
        AC_MSG_ERROR([Cannot find cl -showIncludes prefix.])
    fi
    AC_SUBST(CL_INCLUDES_PREFIX)
    rm -f dummy-hello.c

    dnl Make sure that the build system can handle non-ASCII characters
    dnl in environment variables to prevent it from breaking silently on
    dnl non-English systems.
    NONASCII=$'\241\241'
    AC_SUBST(NONASCII)
  fi
fi

dnl ========================================================
dnl =
dnl = Static Build Options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Static build options)

if test -n "$GKMEDIAS_SHARED_LIBRARY"; then
  AC_DEFINE(GKMEDIAS_SHARED_LIBRARY)
fi
AC_SUBST(GKMEDIAS_SHARED_LIBRARY)

if test -z "$MOZ_NATIVE_ZLIB"; then
if test -n "$JS_SHARED_LIBRARY" -o "$GKMEDIAS_SHARED_LIBRARY"; then
  ZLIB_IN_MOZGLUE=1
  AC_DEFINE(ZLIB_IN_MOZGLUE)
fi
fi

AC_SUBST(ZLIB_IN_MOZGLUE)

dnl ========================================================
dnl =
dnl = Standalone module options
dnl =
dnl ========================================================
MOZ_ARG_HEADER(Standalone module options (Not for building Mozilla))

dnl Check for GLib.
dnl ========================================================

if test -z "$SKIP_PATH_CHECKS"; then
if test -z "${GLIB_CFLAGS}" -o -z "${GLIB_LIBS}" ; then
    if test "$MOZ_ENABLE_GTK" ; then
        PKG_CHECK_MODULES(GLIB, glib-2.0 >= 1.3.7 gobject-2.0)
    fi
fi
fi

if test -z "${GLIB_GMODULE_LIBS}" \
   -a -n "${GLIB_CONFIG}"\
    -a "${GLIB_CONFIG}" != no\
; then
    GLIB_GMODULE_LIBS=`$GLIB_CONFIG gmodule --libs`
fi

AC_SUBST_LIST(GLIB_GMODULE_LIBS)

dnl ========================================================
dnl Graphics checks.
dnl ========================================================

if test "${OS_TARGET}" = "WINNT" -o \
        "${OS_ARCH}" = "Darwin" -o \
        "${MOZ_WIDGET_TOOLKIT}" = "android" -o \
        "${MOZ_WIDGET_TOOLKIT}" = "gonk" -o \
        "${MOZ_WIDGET_TOOLKIT}" = "gtk2" -o \
        "${MOZ_WIDGET_TOOLKIT}" = "gtk3"; then
    case "${CPU_ARCH}" in
    x86|x86_64|arm)
        MOZ_ENABLE_SKIA=1
        ;;
    *)
        MOZ_ENABLE_SKIA=
        ;;
    esac
else
MOZ_ENABLE_SKIA=
fi

MOZ_ARG_ENABLE_BOOL(skia,
[  --enable-skia   Enable use of Skia],
MOZ_ENABLE_SKIA=1,
MOZ_ENABLE_SKIA=)

MOZ_ARG_DISABLE_BOOL(skia-gpu,
[  --disable-skia-gpu  Disable use of Skia-GPU],
MOZ_DISABLE_SKIA_GPU=1,
MOZ_DISABLE_SKIA_GPU=)

if test "$USE_FC_FREETYPE"; then
    if test "$COMPILE_ENVIRONMENT"; then
        dnl ========================================================
        dnl = Check for freetype2 and its functionality
        dnl ========================================================
        PKG_CHECK_MODULES(FT2, freetype2 >= 6.1.0, _HAVE_FREETYPE2=1, _HAVE_FREETYPE2=)

        if test "$_HAVE_FREETYPE2"; then
            _SAVE_LIBS="$LIBS"
            _SAVE_CFLAGS="$CFLAGS"
            LIBS="$LIBS $FT2_LIBS"
            CFLAGS="$CFLAGS $FT2_CFLAGS"

            AC_CACHE_CHECK(for FT_Bitmap_Size.y_ppem,
                ac_cv_member_FT_Bitmap_Size_y_ppem,
                [AC_TRY_COMPILE([#include <ft2build.h>
                                 #include FT_FREETYPE_H],
                                [FT_Bitmap_Size s;
                                 if (sizeof s.y_ppem) return 0;
                                 return 1],
                                ac_cv_member_FT_Bitmap_Size_y_ppem=yes,
                                ac_cv_member_FT_Bitmap_Size_y_ppem=no)])
            if test "$ac_cv_member_FT_Bitmap_Size_y_ppem" = yes; then
                HAVE_FT_BITMAP_SIZE_Y_PPEM=1
            else
                HAVE_FT_BITMAP_SIZE_Y_PPEM=0
            fi
            AC_DEFINE_UNQUOTED(HAVE_FT_BITMAP_SIZE_Y_PPEM,
                               $HAVE_FT_BITMAP_SIZE_Y_PPEM,
                               [FT_Bitmap_Size structure includes y_ppem field])

            AC_CHECK_FUNCS(FT_GlyphSlot_Embolden FT_Load_Sfnt_Table)

            LIBS="$_SAVE_LIBS"
            CFLAGS="$_SAVE_CFLAGS"
        fi

        _SAVE_CPPFLAGS="$CPPFLAGS"
        CPPFLAGS="$CPPFLAGS $FT2_CFLAGS $XCFLAGS"
        MOZ_CHECK_HEADERS([fontconfig/fcfreetype.h], ,
            [AC_MSG_ERROR(Can't find header fontconfig/fcfreetype.h.)], [#include <fontconfig/fontconfig.h>])
        CPPFLAGS="$_SAVE_CPPFLAGS"
    else
        AC_DEFINE(HAVE_FONTCONFIG_FCFREETYPE_H)
    fi

    PKG_CHECK_MODULES(_FONTCONFIG, fontconfig,
    [
        if test "$MOZ_PANGO"; then
            MOZ_PANGO_CFLAGS="$MOZ_PANGO_CFLAGS $_FONTCONFIG_CFLAGS"
            MOZ_PANGO_LIBS="$MOZ_PANGO_LIBS $_FONTCONFIG_LIBS"
        else
            FT2_CFLAGS="$FT2_CFLAGS $_FONTCONFIG_CFLAGS"
            FT2_LIBS="$FT2_LIBS $_FONTCONFIG_LIBS"
        fi
    ])
fi

dnl ========================================================
dnl Check for pixman and cairo
dnl ========================================================

MOZ_TREE_CAIRO=1
MOZ_ARG_ENABLE_BOOL(system-cairo,
[  --enable-system-cairo   Use system cairo (located with pkgconfig)],
MOZ_TREE_CAIRO=,
MOZ_TREE_CAIRO=1 )

MOZ_TREE_PIXMAN=1
MOZ_ARG_ENABLE_BOOL(system-pixman,
[ --enable-system-pixman Use system pixman (located with pkgconfig)],
MOZ_TREE_PIXMAN=,
MOZ_TREE_PIXMAN=force,
MOZ_TREE_PIXMAN=1 )

# System cairo depends on system pixman
if test "$MOZ_TREE_PIXMAN" = "force"; then
    if test -z "$MOZ_TREE_CAIRO"; then
        AC_MSG_ERROR([--disable-system-pixman is incompatible with --enable-system-cairo.])
    else
        MOZ_TREE_PIXMAN=1
    fi
elif test -z "$MOZ_TREE_CAIRO"; then
    MOZ_TREE_PIXMAN=
fi

if test "$MOZ_TREE_PIXMAN"; then
    AC_DEFINE(MOZ_TREE_PIXMAN)
else
    PKG_CHECK_MODULES(PIXMAN, pixman-1 >= 0.19.2)
    MOZ_PIXMAN_CFLAGS="$PIXMAN_CFLAGS"
    MOZ_PIXMAN_LIBS="$PIXMAN_LIBS"
fi
AC_SUBST(MOZ_PIXMAN_CFLAGS)
AC_SUBST_LIST(MOZ_PIXMAN_LIBS)

# Check for headers defining standard int types.
if test -n "$COMPILE_ENVIRONMENT"; then
    MOZ_CHECK_HEADERS(stdint.h inttypes.h)

    if test "${ac_cv_header_inttypes_h}" = "yes"; then
        HAVE_INTTYPES_H=1
    fi
fi

AC_SUBST(HAVE_INTTYPES_H)

if test "$MOZ_TREE_CAIRO"; then
    MOZ_CAIRO_CFLAGS='-I$(LIBXUL_DIST)/include/cairo'
    AC_DEFINE(MOZ_TREE_CAIRO)

    if test "$OS_ARCH" = "WINNT"; then
        # For now we assume that we will have a uint64_t available through
        # one of the above headers or mozstdint.h.
        AC_DEFINE(HAVE_UINT64_T)
    fi

    # Define macros for cairo-features.h
    TEE_SURFACE_FEATURE="#define CAIRO_HAS_TEE_SURFACE 1"
    if test "$MOZ_X11"; then
        XLIB_SURFACE_FEATURE="#define CAIRO_HAS_XLIB_SURFACE 1"
        XLIB_XRENDER_SURFACE_FEATURE="#define CAIRO_HAS_XLIB_XRENDER_SURFACE 1"
        PS_SURFACE_FEATURE="#define CAIRO_HAS_PS_SURFACE 1"
    fi
    if test "$_HAVE_FREETYPE2"; then
        FT_FONT_FEATURE="#define CAIRO_HAS_FT_FONT 1"
        MOZ_ENABLE_CAIRO_FT=1
        CAIRO_FT_CFLAGS="$FT2_CFLAGS"
    fi

    case "$MOZ_WIDGET_TOOLKIT" in
      qt)
        QT_SURFACE_FEATURE="#define CAIRO_HAS_QT_SURFACE 1"
        ;;
      cocoa | uikit)
        QUARTZ_SURFACE_FEATURE="#define CAIRO_HAS_QUARTZ_SURFACE 1"
        QUARTZ_IMAGE_SURFACE_FEATURE="#define CAIRO_HAS_QUARTZ_IMAGE_SURFACE 1"
        QUARTZ_FONT_FEATURE="#define CAIRO_HAS_QUARTZ_FONT 1"
        ;;
      windows)
        WIN32_D2D_SURFACE_FEATURE="#define CAIRO_HAS_D2D_SURFACE 1"
        WIN32_DWRITE_FONT_FEATURE="#define CAIRO_HAS_DWRITE_FONT 1"
        WIN32_FONT_FEATURE="#define CAIRO_HAS_WIN32_FONT 1"
        WIN32_SURFACE_FEATURE="#define CAIRO_HAS_WIN32_SURFACE 1"
        MOZ_ENABLE_D2D_SURFACE=1
        MOZ_ENABLE_DWRITE_FONT=1

        MOZ_CHECK_HEADER(d3d9.h, MOZ_ENABLE_D3D9_LAYER=1)

        dnl D3D10 Layers depend on D2D Surfaces.
        if test -n "$WIN32_D2D_SURFACE_FEATURE"; then
          MOZ_CHECK_HEADER(d3d10.h, MOZ_ENABLE_D3D10_LAYER=1)
        fi
        ;;
    esac
    if test "$USE_FC_FREETYPE"; then
        FC_FONT_FEATURE="#define CAIRO_HAS_FC_FONT 1"
    fi
    AC_SUBST(MOZ_ENABLE_CAIRO_FT)
    AC_SUBST(MOZ_ENABLE_DWRITE_FONT)
    AC_SUBST(MOZ_ENABLE_D2D_SURFACE)
    AC_SUBST(MOZ_ENABLE_D3D9_LAYER)
    AC_SUBST(MOZ_ENABLE_D3D10_LAYER)

    AC_SUBST(PS_SURFACE_FEATURE)
    AC_SUBST(PDF_SURFACE_FEATURE)
    AC_SUBST(SVG_SURFACE_FEATURE)
    AC_SUBST(XLIB_SURFACE_FEATURE)
    AC_SUBST(XLIB_XRENDER_SURFACE_FEATURE)
    AC_SUBST(QUARTZ_SURFACE_FEATURE)
    AC_SUBST(QUARTZ_IMAGE_SURFACE_FEATURE)
    AC_SUBST(WIN32_SURFACE_FEATURE)
    AC_SUBST(OS2_SURFACE_FEATURE)
    AC_SUBST(DIRECTFB_SURFACE_FEATURE)
    AC_SUBST(FT_FONT_FEATURE)
    AC_SUBST(FC_FONT_FEATURE)
    AC_SUBST(WIN32_FONT_FEATURE)
    AC_SUBST(WIN32_DWRITE_FONT_FEATURE)
    AC_SUBST(WIN32_D2D_SURFACE_FEATURE)
    AC_SUBST(QUARTZ_FONT_FEATURE)
    AC_SUBST(PNG_FUNCTIONS_FEATURE)
    AC_SUBST(QT_SURFACE_FEATURE)
    AC_SUBST(TEE_SURFACE_FEATURE)

    MOZ_CAIRO_OSLIBS='${CAIRO_FT_OSLIBS}'

    if test "$MOZ_X11"; then
        MOZ_CAIRO_OSLIBS="$MOZ_CAIRO_OSLIBS $XLDFLAGS -lXrender"
    fi

    CAIRO_FEATURES_H=gfx/cairo/cairo/src/cairo-features.h
else
    PKG_CHECK_MODULES(CAIRO, cairo >= $CAIRO_VERSION)
    MOZ_CAIRO_CFLAGS="$CAIRO_CFLAGS"
    MOZ_CAIRO_LIBS="$CAIRO_LIBS"
    PKG_CHECK_MODULES(CAIRO_TEE, cairo-tee >= $CAIRO_VERSION)
    if test "$MOZ_X11"; then
        PKG_CHECK_MODULES(CAIRO_XRENDER, cairo-xlib-xrender >= $CAIRO_VERSION)
        MOZ_CAIRO_LIBS="$MOZ_CAIRO_LIBS $XLDFLAGS $CAIRO_XRENDER_LIBS"
        MOZ_CAIRO_OSLIBS="$MOZ_CAIRO_LIBS"
        MOZ_CAIRO_CFLAGS="$MOZ_CAIRO_CFLAGS $CAIRO_XRENDER_CFLAGS"
    fi
fi

AC_SUBST(MOZ_TREE_CAIRO)
AC_SUBST_LIST(MOZ_CAIRO_CFLAGS)
AC_SUBST_LIST(MOZ_CAIRO_LIBS)
AC_SUBST_LIST(MOZ_CAIRO_OSLIBS)
AC_SUBST(MOZ_TREE_PIXMAN)

dnl ========================================================
dnl Skia
dnl ========================================================
if test "$MOZ_ENABLE_SKIA"; then
  SKIA_INCLUDES="/gfx/skia /gfx/skia/skia/include/config /gfx/skia/skia/include/core"
  AC_DEFINE(MOZ_ENABLE_SKIA)
  AC_DEFINE(USE_SKIA)
  if test "${MOZ_WIDGET_TOOLKIT}" = "android" -o x"$MOZ_WIDGET_TOOLKIT" = x"gonk"; then
    AC_DEFINE(SK_BUILD_FOR_ANDROID_NDK)
  fi

  if test "${CPU_ARCH}" != "ppc" -a "${CPU_ARCH}" != "ppc64" -a "${CPU_ARCH}" != "sparc" -a -z "$MOZ_DISABLE_SKIA_GPU" ; then
    SKIA_INCLUDES="$SKIA_INCLUDES /gfx/skia/skia/include/gpu /gfx/skia/skia/include/utils"
    MOZ_ENABLE_SKIA_GPU=1
    AC_DEFINE(USE_SKIA_GPU)
    AC_SUBST(MOZ_ENABLE_SKIA_GPU)
  fi
fi
AC_SUBST(MOZ_ENABLE_SKIA)
AC_SUBST_LIST(SKIA_INCLUDES)

dnl ========================================================
dnl disable xul
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(xul,
[  --disable-xul           Disable XUL],
    MOZ_XUL= )
if test "$MOZ_XUL"; then
  AC_DEFINE(MOZ_XUL)
else
  dnl remove extensions that require XUL
  MOZ_EXTENSIONS=`echo $MOZ_EXTENSIONS | sed -e 's/inspector//' -e 's/irc//' -e 's/tasks//'`
fi

AC_SUBST(MOZ_XUL)

dnl ========================================================
dnl disable profile locking
dnl   do no use this in applications that can have more than
dnl   one process accessing the profile directory.
dnl ========================================================
MOZ_ARG_DISABLE_BOOL(profilelocking,
[  --disable-profilelocking
                          Disable profile locking],
    MOZ_PROFILELOCKING=,
    MOZ_PROFILELOCKING=1 )
if test "$MOZ_PROFILELOCKING"; then
  AC_DEFINE(MOZ_PROFILELOCKING)
fi

dnl ========================================================
dnl necko configuration options
dnl ========================================================

dnl
dnl option to disable various necko protocols
dnl
MOZ_ARG_ENABLE_STRING(necko-protocols,
[  --enable-necko-protocols[={http,ftp,default,all,none}]
                          Enable/disable specific protocol handlers],
[ for option in `echo $enableval | sed 's/,/ /g'`; do
    if test "$option" = "yes" -o "$option" = "all"; then
        NECKO_PROTOCOLS="$NECKO_PROTOCOLS $NECKO_PROTOCOLS_DEFAULT"
    elif test "$option" = "no" -o "$option" = "none"; then
        NECKO_PROTOCOLS=""
    elif test "$option" = "default"; then
        NECKO_PROTOCOLS="$NECKO_PROTOCOLS $NECKO_PROTOCOLS_DEFAULT"
    elif test `echo "$option" | grep -c \^-` != 0; then
        option=`echo $option | sed 's/^-//'`
        NECKO_PROTOCOLS=`echo "$NECKO_PROTOCOLS" | sed "s/ ${option}//"`
    else
        NECKO_PROTOCOLS="$NECKO_PROTOCOLS $option"
    fi
done],
    NECKO_PROTOCOLS="$NECKO_PROTOCOLS_DEFAULT")
AC_SUBST_SET(NECKO_PROTOCOLS)
for p in $NECKO_PROTOCOLS; do
    AC_DEFINE_UNQUOTED(NECKO_PROTOCOL_$p)
    _NON_GLOBAL_ACDEFINES="$_NON_GLOBAL_ACDEFINES NECKO_PROTOCOL_$p"
done

dnl
dnl option to disable necko's wifi scanner
dnl

case "$OS_TARGET" in
  Android)
    if test -n "$gonkdir"; then
      NECKO_WIFI=1
    fi
    ;;
  Darwin)
    if test -z "$MOZ_IOS"; then
      NECKO_WIFI=1
    fi
    ;;
  DragonFly|FreeBSD|SunOS|WINNT)
    NECKO_WIFI=1
    ;;
  Linux)
    NECKO_WIFI=1
    NECKO_WIFI_DBUS=1
    ;;
esac

MOZ_ARG_DISABLE_BOOL(necko-wifi,
[  --disable-necko-wifi    Disable necko wifi scanner],
    NECKO_WIFI=,
    NECKO_WIFI=1)

if test "$NECKO_WIFI"; then
  if test -z "$MOZ_ENABLE_DBUS" -a -n "$NECKO_WIFI_DBUS"; then
    AC_MSG_ERROR([Necko WiFi scanning needs DBus on your platform, remove --disable-dbus or use --disable-necko-wifi])
  fi
  AC_DEFINE(NECKO_WIFI)
  _NON_GLOBAL_ACDEFINES="$_NON_GLOBAL_ACDEFINES NECKO_WIFI"
fi
AC_SUBST(NECKO_WIFI)
AC_SUBST(NECKO_WIFI_DBUS)

dnl
dnl option to disable cookies
dnl
MOZ_ARG_DISABLE_BOOL(cookies,
[  --disable-cookies       Disable cookie support],
    NECKO_COOKIES=,
    NECKO_COOKIES=1)
AC_SUBST(NECKO_COOKIES)
if test "$NECKO_COOKIES"; then
    AC_DEFINE(NECKO_COOKIES)
    _NON_GLOBAL_ACDEFINES="$_NON_GLOBAL_ACDEFINES NECKO_COOKIES"
fi

dnl
dnl Always build Marionette if not Android or B2G
dnl
if test "$OS_TARGET" != Android -a x"$MOZ_WIDGET_TOOLKIT" != x"gonk"; then
    AC_DEFINE(ENABLE_MARIONETTE)
fi
AC_SUBST(ENABLE_MARIONETTE)
if test "$ENABLE_MARIONETTE"; then
    AC_DEFINE(ENABLE_MARIONETTE)
fi

dnl
dnl Build jsctypes on the platforms we can, unless it's explicitly disabled.
dnl
MOZ_ARG_DISABLE_BOOL(ctypes,
[  --disable-ctypes        Disable js-ctypes],
    BUILD_CTYPES=,
    BUILD_CTYPES=1)
AC_SUBST(BUILD_CTYPES)
if test "$BUILD_CTYPES"; then
    AC_DEFINE(BUILD_CTYPES)
fi

dnl Build Places if required
if test "$MOZ_PLACES"; then
  AC_DEFINE(MOZ_PLACES)
fi

dnl Build SocialAPI if required
if test "$MOZ_SOCIAL"; then
  AC_DEFINE(MOZ_SOCIAL)
fi

dnl Build Common JS modules provided by services.
AC_SUBST(MOZ_SERVICES_COMMON)
if test -n "$MOZ_SERVICES_COMMON"; then
  AC_DEFINE(MOZ_SERVICES_COMMON)
fi

dnl Build Services crypto component (used by Sync)
AC_SUBST(MOZ_SERVICES_CRYPTO)
if test -n "$MOZ_SERVICES_CRYPTO"; then
  AC_DEFINE(MOZ_SERVICES_CRYPTO)
fi

dnl Build Firefox Health Reporter Service
AC_SUBST(MOZ_SERVICES_HEALTHREPORT)
if test -n "$MOZ_SERVICES_HEALTHREPORT"; then
  AC_DEFINE(MOZ_SERVICES_HEALTHREPORT)
fi

dnl Build Services metrics component
AC_SUBST(MOZ_SERVICES_METRICS)
if test -n "$MOZ_SERVICES_METRICS"; then
  AC_DEFINE(MOZ_SERVICES_METRICS)
fi

dnl Build Notifications if required
AC_SUBST(MOZ_SERVICES_NOTIFICATIONS)
if test -n "$MOZ_SERVICES_NOTIFICATIONS"; then
  AC_DEFINE(MOZ_SERVICES_NOTIFICATIONS)
fi

dnl Build Sync Services if required
AC_SUBST(MOZ_SERVICES_SYNC)
if test -n "$MOZ_SERVICES_SYNC"; then
  AC_DEFINE(MOZ_SERVICES_SYNC)
fi

dnl Build Services/CloudSync if required
AC_SUBST(MOZ_SERVICES_CLOUDSYNC)
if test -n "$MOZ_SERVICES_CLOUDSYNC"; then
  AC_DEFINE(MOZ_SERVICES_CLOUDSYNC)
fi

dnl Build second screen and casting features for external devices if required
AC_SUBST(MOZ_DEVICES)
if test -n "$MOZ_DEVICES"; then
  AC_DEFINE(MOZ_DEVICES)
fi

dnl Build Fennec Android native UI to manage accounts.  This will go away as
dnl Fennec transitions to web UI to manage accounts.
AC_SUBST(MOZ_ANDROID_NATIVE_ACCOUNT_UI)
if test -n "$MOZ_ANDROID_NATIVE_ACCOUNT_UI"; then
  AC_DEFINE(MOZ_ANDROID_NATIVE_ACCOUNT_UI)
fi

dnl ========================================================
if test "$MOZ_DEBUG" -o "$MOZ_DMD"; then
    MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS=
fi

dnl ========================================================
dnl =
dnl = Maintainer debug option (no --enable equivalent)
dnl =
dnl ========================================================

AC_SUBST(AR)
AC_SUBST(AR_FLAGS)
AC_SUBST(AR_LIST)
AC_SUBST(AR_EXTRACT)
AC_SUBST(AR_DELETE)
AC_SUBST(AS)
AC_SUBST(ASFLAGS)
AC_SUBST(AS_DASH_C_FLAG)
AC_SUBST(LD)
AC_SUBST(RC)
AC_SUBST(RCFLAGS)
AC_SUBST(MC)
AC_SUBST(WINDRES)
AC_SUBST(IMPLIB)
AC_SUBST(FILTER)
AC_SUBST(BIN_FLAGS)
AC_SUBST(MOZ_WIDGET_TOOLKIT)
AC_SUBST(MOZ_UPDATE_XTERM)
AC_SUBST(MOZ_AUTH_EXTENSION)
AC_SUBST(MOZ_PREF_EXTENSIONS)
AC_SUBST(MOZ_DEBUG)
AC_SUBST(MOZ_DEBUG_SYMBOLS)
AC_SUBST(MOZ_DEBUG_LDFLAGS)
AC_SUBST(WARNINGS_AS_ERRORS)
AC_SUBST_SET(MOZ_EXTENSIONS)
AC_SUBST(MOZ_ENABLE_PROFILER_SPS)
AC_SUBST(MOZ_JPROF)
AC_SUBST(MOZ_INSTRUMENTS)
AC_SUBST(MOZ_CALLGRIND)
AC_SUBST(MOZ_VTUNE)
AC_SUBST(MOZ_PROFILING)
AC_SUBST(LIBICONV)
AC_SUBST(MOZ_PLACES)
AC_SUBST(MOZ_SOCIAL)
AC_SUBST(MOZ_TOOLKIT_SEARCH)
AC_SUBST(MOZ_FEEDS)
AC_SUBST(NS_PRINTING)
AC_SUBST(MOZ_HELP_VIEWER)
AC_SUBST(TOOLCHAIN_PREFIX)

AC_SUBST(JAVA)
AC_SUBST(JAVAC)
AC_SUBST(JAVAH)
AC_SUBST(JAR)
AC_SUBST(JARSIGNER)
AC_SUBST(KEYTOOL)

AC_SUBST(MOZ_PROFILELOCKING)

AC_SUBST(ENABLE_TESTS)
AC_SUBST(MOZ_UNIVERSALCHARDET)
AC_SUBST(ACCESSIBILITY)
AC_SUBST(MOZ_SPELLCHECK)
AC_SUBST(MOZ_ANDROID_APZ)
AC_SUBST(MOZ_ANDROID_ANR_REPORTER)
AC_SUBST(MOZ_CRASHREPORTER)
AC_SUBST(MOZ_CRASHREPORTER_INJECTOR)
AC_SUBST(MOZ_CRASHREPORTER_UPLOAD_FULL_SYMBOLS)
AC_SUBST(MOZ_MAINTENANCE_SERVICE)
AC_SUBST(MOZ_STUB_INSTALLER)
AC_SUBST(MOZ_VERIFY_MAR_SIGNATURE)
AC_SUBST(MOZ_ENABLE_SIGNMAR)
AC_SUBST(MOZ_UPDATER)

AC_SUBST(MOZ_ANGLE_RENDERER)
AC_SUBST(MOZ_D3D_CPU_SUFFIX)
AC_SUBST(MOZ_HAS_WINSDK_WITH_D3D)
AC_SUBST(MOZ_D3DCOMPILER_VISTA_DLL)
AC_SUBST(MOZ_D3DCOMPILER_VISTA_DLL_PATH)
AC_SUBST(MOZ_DIRECTX_SDK_PATH)
AC_SUBST(MOZ_D3DCOMPILER_XP_DLL)
AC_SUBST(MOZ_D3DCOMPILER_XP_CAB)

AC_SUBST(MOZ_ANDROID_HISTORY)
AC_SUBST(MOZ_WEBSMS_BACKEND)
AC_SUBST(MOZ_ANDROID_BEAM)
AC_SUBST(MOZ_LOCALE_SWITCHER)
AC_SUBST(MOZ_DISABLE_GECKOVIEW)
AC_SUBST(MOZ_ANDROID_GECKOLIBS_AAR)
AC_SUBST(MOZ_ANDROID_READING_LIST_SERVICE)
AC_SUBST(MOZ_ANDROID_SEARCH_ACTIVITY)
AC_SUBST(MOZ_ANDROID_SHARE_OVERLAY)
AC_SUBST(MOZ_ANDROID_FIREFOX_ACCOUNT_PROFILES)
AC_SUBST(MOZ_ANDROID_TAB_QUEUE)
AC_SUBST(MOZ_ANDROID_MLS_STUMBLER)
AC_SUBST(MOZ_ANDROID_DOWNLOADS_INTEGRATION)
AC_SUBST(MOZ_ANDROID_APPLICATION_CLASS)
AC_SUBST(MOZ_ANDROID_BROWSER_INTENT_CLASS)
AC_SUBST(MOZ_ANDROID_SEARCH_INTENT_CLASS)
AC_SUBST(MOZ_INSTALL_TRACKING)
AC_SUBST(MOZ_SWITCHBOARD)
AC_SUBST(ENABLE_STRIP)
AC_SUBST(PKG_SKIP_STRIP)
AC_SUBST(STRIP_FLAGS)
AC_SUBST(USE_ELF_HACK)
AC_SUBST(INCREMENTAL_LINKER)
AC_SUBST(MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS)
AC_SUBST(MOZ_COMPONENT_NSPR_LIBS)

AC_SUBST(MOZ_FIX_LINK_PATHS)

AC_SUBST(USE_DEPENDENT_LIBS)

AC_SUBST(MOZ_BUILD_ROOT)

AC_SUBST(MOZ_POST_DSO_LIB_COMMAND)
AC_SUBST(MOZ_POST_PROGRAM_COMMAND)
AC_SUBST(MOZ_LINKER_EXTRACT)

AC_SUBST(MOZ_ADDON_SIGNING)
AC_SUBST(MOZ_REQUIRE_SIGNING)

if test -n "$MOZ_BINARY_EXTENSIONS"; then
  AC_DEFINE(MOZ_BINARY_EXTENSIONS)
fi

AC_SUBST(MOZ_JSDOWNLOADS)
if test -n "$MOZ_JSDOWNLOADS"; then
  AC_DEFINE(MOZ_JSDOWNLOADS)
fi

dnl ========================================================
dnl = Mac bundle name prefix
dnl ========================================================
MOZ_ARG_WITH_STRING(macbundlename-prefix,
[  --with-macbundlename-prefix=prefix
                          Prefix for MOZ_MACBUNDLE_NAME],
[ MOZ_MACBUNDLE_NAME_PREFIX="$withval"])

MOZ_MACBUNDLE_NAME=`echo $MOZ_APP_DISPLAYNAME | tr -d ' '`
if test "$MOZ_MACBUNDLE_NAME_PREFIX"; then
  MOZ_MACBUNDLE_NAME="${MOZ_MACBUNDLE_NAME_PREFIX}${MOZ_MACBUNDLE_NAME}"
fi

if test "$MOZ_DEBUG"; then
  MOZ_MACBUNDLE_NAME=${MOZ_MACBUNDLE_NAME}Debug.app
else
  MOZ_MACBUNDLE_NAME=${MOZ_MACBUNDLE_NAME}.app
fi
AC_SUBST(MOZ_MACBUNDLE_NAME)

dnl Mac bundle identifier (based on MOZ_APP_DISPLAYNAME)
MOZ_MACBUNDLE_ID=`echo $MOZ_APP_DISPLAYNAME | tr '[A-Z]' '[a-z]'`
MOZ_MACBUNDLE_ID=${MOZ_DISTRIBUTION_ID}.${MOZ_MACBUNDLE_ID}
if test "$MOZ_DEBUG"; then
  MOZ_MACBUNDLE_ID=${MOZ_MACBUNDLE_ID}debug
fi

AC_DEFINE_UNQUOTED(MOZ_MACBUNDLE_ID,$MOZ_MACBUNDLE_ID)
AC_SUBST(MOZ_MACBUNDLE_ID)

dnl ========================================================
dnl = Child Process Name for IPC
dnl ========================================================
if test "$MOZ_WIDGET_TOOLKIT" != "android"; then
  MOZ_CHILD_PROCESS_NAME="plugin-container${BIN_SUFFIX}"
else
  # We want to let Android unpack the file at install time, but it only does
  # so if the file is named libsomething.so. The lib/ path is also required
  # because the unpacked file will be under the lib/ subdirectory and will
  # need to be executed from that path.
  MOZ_CHILD_PROCESS_NAME="libplugin-container.so"
  MOZ_CHILD_PROCESS_NAME_PIE="libplugin-container-pie.so"
  AC_SUBST(MOZ_CHILD_PROCESS_NAME_PIE)
fi
MOZ_CHILD_PROCESS_BUNDLE="plugin-container.app/Contents/MacOS/"

AC_SUBST(MOZ_CHILD_PROCESS_NAME)
AC_SUBST(MOZ_CHILD_PROCESS_BUNDLE)

# The following variables are available to branding and application
# configuration ($BRANDING/configure.sh and $APPLICATION/confvars.sh):
# - MOZ_APP_VENDOR: Used for application.ini's "Vendor" field, which also
# impacts profile location and user-visible fields.
# - MOZ_APP_BASENAME: Typically stays consistent for multiple branded
# versions of a given application (e.g. Aurora and Firefox both use
# "Firefox"), but may vary for full rebrandings (e.g. Iceweasel). Used
# for application.ini's "Name" field, which controls profile location in
# the absence of a "Profile" field (see below), and various system
# integration hooks (Unix remoting, Windows MessageWindow name, etc.)
# - MOZ_APP_DISPLAYNAME: Used in user-visible fields (DLL properties,
# Mac Bundle name, Updater, Installer), it is typically used for nightly
# builds (e.g. Aurora for Firefox).
# - MOZ_APP_VERSION: Defines the application version number.
# - MOZ_APP_VERSION_DISPLAY: Defines the application version number. Used
# in the "About" window. If not set, defaults to MOZ_APP_VERSION.
# - MOZ_APP_NAME: Used for e.g. the binary program file name. If not set,
# defaults to a lowercase form of MOZ_APP_BASENAME.
# - MOZ_APP_REMOTINGNAME: Used for the internal program name, which affects
# profile name and remoting. If not set, defaults to MOZ_APP_NAME.
# - MOZ_APP_PROFILE: When set, used for application.ini's
# "Profile" field, which controls profile location.
# - MOZ_APP_ID: When set, used for application.ini's "ID" field, and
# crash reporter server url.
# - MOZ_APP_ANDROID_VERSION_CODE: On android, "android:versionCode" for
# the main application is set to the value of this variable.  If not
# set, it falls back to a Mozilla-specific value derived from the
# build ID.
# - MOZ_PROFILE_MIGRATOR: When set, enables profile migrator.

if test -z "$MOZ_APP_NAME"; then
   MOZ_APP_NAME=`echo $MOZ_APP_BASENAME | tr A-Z a-z`
fi

if test -z "$MOZ_APP_REMOTINGNAME"; then
   MOZ_APP_REMOTINGNAME=$MOZ_APP_NAME
fi

if test -z "$MOZ_APP_VERSION_DISPLAY"; then
   MOZ_APP_VERSION_DISPLAY=$MOZ_APP_VERSION
fi

# For extensions and langpacks, we require a max version that is compatible
# across security releases. MOZ_APP_MAXVERSION is our method for doing that.
# 24.0a1 and 24.0a2 aren't affected
# 24.0 becomes 24.*
# 24.1.1 becomes 24.*
IS_ALPHA=`echo $MOZ_APP_VERSION | grep a`
if test -z "$IS_ALPHA"; then
  changequote(,)
  if test "$(basename $MOZ_BUILD_APP)" = "suite"; then
    MOZ_APP_MAXVERSION=`echo $MOZ_APP_VERSION | sed "s|\(^[0-9]*\.[0-9]*\).*|\1|"`.*
  else
    MOZ_APP_MAXVERSION=`echo $MOZ_APP_VERSION | sed "s|\(^[0-9]*\).*|\1|"`.*
  fi
  changequote([,])
else
  MOZ_APP_MAXVERSION=$MOZ_APP_VERSION
fi

MOZ_B2G_VERSION=${MOZ_B2G_VERSION:-"1.0.0"}
AC_DEFINE_UNQUOTED(MOZ_B2G_VERSION,"$MOZ_B2G_VERSION")
AC_DEFINE_UNQUOTED(MOZ_B2G_OS_NAME,"$MOZ_B2G_OS_NAME")

AC_SUBST(MOZ_APP_NAME)
AC_SUBST(MOZ_APP_REMOTINGNAME)
AC_SUBST(MOZ_APP_DISPLAYNAME)
AC_SUBST(MOZ_APP_BASENAME)
AC_SUBST(MOZ_APP_VENDOR)
AC_SUBST(MOZ_APP_PROFILE)
AC_SUBST(MOZ_APP_ID)
AC_SUBST(MOZ_APP_ANDROID_VERSION_CODE)
AC_SUBST(MAR_CHANNEL_ID)
AC_SUBST(ACCEPTED_MAR_CHANNEL_IDS)
AC_SUBST(MOZ_PROFILE_MIGRATOR)
AC_DEFINE_UNQUOTED(MOZ_APP_UA_NAME, "$MOZ_APP_UA_NAME")
AC_SUBST(MOZ_APP_UA_NAME)
AC_DEFINE_UNQUOTED(MOZ_APP_UA_VERSION, "$MOZ_APP_VERSION")
AC_SUBST(MOZ_APP_VERSION)
AC_SUBST(MOZ_APP_VERSION_DISPLAY)
AC_SUBST(MOZ_APP_MAXVERSION)
AC_DEFINE_UNQUOTED(FIREFOX_VERSION,$FIREFOX_VERSION)
AC_SUBST(FIREFOX_VERSION)
AC_SUBST(MOZ_UA_OS_AGNOSTIC)
if test -n "$MOZ_UA_OS_AGNOSTIC"; then
  AC_DEFINE(MOZ_UA_OS_AGNOSTIC)
fi

AC_SUBST(MOZ_APP_STATIC_INI)

AC_SUBST(MOZ_PKG_SPECIAL)
AC_SUBST(MOZ_SIMPLE_PACKAGE_NAME)

AC_SUBST(MOZILLA_OFFICIAL)
if test "$MOZILLA_OFFICIAL"; then
    AC_DEFINE(MOZILLA_OFFICIAL)
    # Build revisions should always be present in official builds
    MOZ_INCLUDE_SOURCE_INFO=1
fi

# On official builds, we need to know in Telemetry what revision this is built from.
# This is e.g. needed to match incoming data to a specific revision of the Histograms.json
# file.
if test "$MOZILLA_OFFICIAL" && test -d ${_topsrcdir}/.hg; then
  SOURCE_REV=`cd $_topsrcdir && hg parent --template='{node|short}'`
  SOURCE_REPO=`cd $_topsrcdir && hg showconfig paths.default | sed -e 's|^ssh://|http://|' -e 's|/$||'`
  SOURCE_REV_URL=$SOURCE_REPO/rev/$SOURCE_REV
else
  SOURCE_REV_URL=
fi
AC_SUBST(SOURCE_REV_URL)

AC_SUBST(MOZ_INCLUDE_SOURCE_INFO)

AC_DEFINE_UNQUOTED(MOZ_TELEMETRY_DISPLAY_REV, 2)
AC_SUBST(MOZ_TELEMETRY_DISPLAY_REV)

if test "$MOZ_TELEMETRY_REPORTING"; then
    AC_DEFINE(MOZ_TELEMETRY_REPORTING)

    # Enable Telemetry by default for nightly and aurora channels
    if test -z "$RELEASE_BUILD"; then
      AC_DEFINE(MOZ_TELEMETRY_ON_BY_DEFAULT)
    fi
fi

dnl If we have any service that uploads data (and requires data submission
dnl policy alert), set MOZ_DATA_REPORTING.
dnl We need SUBST for build system and DEFINE for xul preprocessor.
if test -n "$MOZ_TELEMETRY_REPORTING" || test -n "$MOZ_SERVICES_HEALTHREPORT" || test -n "$MOZ_CRASHREPORTER"; then
  MOZ_DATA_REPORTING=1
  AC_DEFINE(MOZ_DATA_REPORTING)
  AC_SUBST(MOZ_DATA_REPORTING)
fi

dnl win32 options
AC_SUBST(MOZ_BROWSE_INFO)
AC_SUBST(WIN32_REDIST_DIR)
AC_SUBST(MAKENSISU)

dnl Echo the CFLAGS to remove extra whitespace.
CFLAGS=`echo \
    $_WARNINGS_CFLAGS \
    $CFLAGS`

CXXFLAGS=`echo \
    $_WARNINGS_CXXFLAGS \
    $CXXFLAGS`

COMPILE_CFLAGS=`echo \
    $_DEFINES_CFLAGS \
    $_DEPEND_CFLAGS \
    $COMPILE_CFLAGS`

COMPILE_CXXFLAGS=`echo \
    $_DEFINES_CXXFLAGS \
    $_DEPEND_CFLAGS \
    $COMPILE_CXXFLAGS`

HOST_CFLAGS=`echo \
    $HOST_CFLAGS \
    $_DEPEND_CFLAGS`

HOST_CXXFLAGS=`echo \
    $HOST_CXXFLAGS \
    $_DEPEND_CFLAGS`

AC_SUBST(MOZ_NATIVE_JPEG)
AC_SUBST(MOZ_NATIVE_PNG)
AC_SUBST(MOZ_NATIVE_BZ2)

AC_SUBST(MOZ_JPEG_CFLAGS)
AC_SUBST_LIST(MOZ_JPEG_LIBS)
AC_SUBST_LIST(MOZ_BZ2_CFLAGS)
AC_SUBST_LIST(MOZ_BZ2_LIBS)
AC_SUBST(MOZ_PNG_CFLAGS)
AC_SUBST_LIST(MOZ_PNG_LIBS)

if test "$MOZ_WIDGET_TOOLKIT" = gonk -a -n "$MOZ_NUWA_PROCESS"; then
    export MOZ_NUWA_PROCESS
    AC_DEFINE(MOZ_NUWA_PROCESS)
fi
AC_SUBST(MOZ_NUWA_PROCESS)
if test "$MOZ_WIDGET_TOOLKIT" = gonk -a -n "$MOZ_B2G_LOADER"; then
    if test -z "$MOZ_NUWA_PROCESS"; then
       AC_MSG_ERROR([B2G loader works with Nuwa]);
    fi
    export MOZ_B2G_LOADER
    AC_DEFINE(MOZ_B2G_LOADER)
fi
AC_SUBST(MOZ_B2G_LOADER)

AC_SUBST(NSPR_CFLAGS)
AC_SUBST(MOZ_NATIVE_NSPR)

AC_SUBST(NSS_CFLAGS)
AC_SUBST(MOZ_NATIVE_NSS)
AC_SUBST(NSS_DISABLE_DBM)

OS_CFLAGS="$CFLAGS"
OS_CXXFLAGS="$CXXFLAGS"
OS_CPPFLAGS="$CPPFLAGS"
OS_COMPILE_CFLAGS="$COMPILE_CFLAGS"
OS_COMPILE_CXXFLAGS="$COMPILE_CXXFLAGS"
OS_LDFLAGS="$LDFLAGS"
OS_LIBS="$LIBS"
AC_SUBST(OS_CFLAGS)
AC_SUBST(OS_CXXFLAGS)
AC_SUBST(OS_CPPFLAGS)
AC_SUBST(OS_COMPILE_CFLAGS)
AC_SUBST(OS_COMPILE_CXXFLAGS)
AC_SUBST(OS_LDFLAGS)
AC_SUBST(OS_LIBS)
AC_SUBST(CROSS_COMPILE)
AC_SUBST(WCHAR_CFLAGS)

AC_SUBST(HOST_CC)
AC_SUBST(HOST_CXX)
AC_SUBST(HOST_CFLAGS)
AC_SUBST(HOST_CXXFLAGS)
AC_SUBST(HOST_LDFLAGS)
AC_SUBST(HOST_OPTIMIZE_FLAGS)
AC_SUBST(HOST_AR)
AC_SUBST(HOST_AR_FLAGS)
AC_SUBST(HOST_LD)
AC_SUBST(HOST_RANLIB)
AC_SUBST(HOST_NSPR_MDCPUCFG)
AC_SUBST(HOST_BIN_SUFFIX)
AC_SUBST(HOST_OS_ARCH)

AC_SUBST(TARGET_CPU)
AC_SUBST(TARGET_VENDOR)
AC_SUBST(TARGET_OS)
AC_SUBST(TARGET_NSPR_MDCPUCFG)
AC_SUBST(TARGET_MD_ARCH)
AC_SUBST(TARGET_XPCOM_ABI)
AC_SUBST(OS_TARGET)
AC_SUBST(OS_ARCH)
AC_SUBST(OS_RELEASE)
AC_SUBST(OS_TEST)
AC_SUBST(CPU_ARCH)
AC_SUBST(INTEL_ARCHITECTURE)
AC_SUBST(HAVE_TOOLCHAIN_SUPPORT_MSSSE3)
AC_SUBST(HAVE_TOOLCHAIN_SUPPORT_MSSE4_1)
AC_SUBST(HAVE_X86_AVX2)
AC_SUBST(GCC_USE_GNU_LD)

AC_SUBST(MOZ_CHROME_FILE_FORMAT)

AC_SUBST(WRAP_LDFLAGS)
AC_SUBST(MKSHLIB)
AC_SUBST(MKCSHLIB)
AC_SUBST(DSO_CFLAGS)
AC_SUBST(DSO_PIC_CFLAGS)
AC_SUBST(DSO_LDOPTS)
AC_SUBST(LIB_PREFIX)
AC_SUBST(DLL_PREFIX)
AC_SUBST(DLL_SUFFIX)
AC_DEFINE_UNQUOTED(MOZ_DLL_SUFFIX, "$DLL_SUFFIX")
AC_SUBST(LIB_SUFFIX)
AC_SUBST(OBJ_SUFFIX)
AC_SUBST(BIN_SUFFIX)
AC_SUBST(ASM_SUFFIX)
AC_SUBST(IMPORT_LIB_SUFFIX)
AC_SUBST(USE_N32)
AC_SUBST(CC_VERSION)
AC_SUBST(CXX_VERSION)
AC_SUBST(MSMANIFEST_TOOL)
AC_SUBST(NS_ENABLE_TSF)
AC_SUBST(WIN32_CONSOLE_EXE_LDFLAGS)
AC_SUBST(WIN32_GUI_EXE_LDFLAGS)

AC_SUBST(MOZ_WAVE)
AC_SUBST(MOZ_VORBIS)
AC_SUBST(MOZ_TREMOR)
AC_SUBST(MOZ_WEBM)
AC_SUBST(MOZ_WMF)
AC_SUBST(MOZ_FFMPEG)
AC_SUBST(MOZ_FMP4)
AC_SUBST(MOZ_EME)
AC_SUBST(MOZ_DIRECTSHOW)
AC_SUBST(MOZ_ANDROID_OMX)
AC_SUBST(MOZ_APPLEMEDIA)
AC_SUBST(MOZ_OMX_PLUGIN)
AC_SUBST(MOZ_VPX_ERROR_CONCEALMENT)
AC_SUBST(MOZ_VPX)
AC_SUBST(VPX_AS)
AC_SUBST_LIST(VPX_ASFLAGS)
AC_SUBST(VPX_AS_CONVERSION)
AC_SUBST(VPX_ASM_SUFFIX)
AC_SUBST(VPX_X86_ASM)
AC_SUBST(VPX_ARM_ASM)
AC_SUBST(VPX_NEED_OBJ_INT_EXTRACT)
AC_SUBST(MOZ_INSTRUMENT_EVENT_LOOP)
AC_SUBST(MOZ_CODE_COVERAGE)
AC_SUBST(LIBJPEG_TURBO_AS)
AC_SUBST_LIST(LIBJPEG_TURBO_ASFLAGS)
AC_SUBST(MOZ_LIBAV_FFT)
AC_SUBST(LIBAV_FFT_AS)
AC_SUBST_LIST(LIBAV_FFT_ASFLAGS)

AC_SUBST(MOZ_PACKAGE_JSSHELL)
AC_SUBST(MOZ_FOLD_LIBS)
AC_SUBST(MOZ_FOLD_LIBS_FLAGS)
AC_SUBST(SOCORRO_SYMBOL_UPLOAD_TOKEN_FILE)

AC_SUBST(MOZ_ENABLE_SZIP)
AC_SUBST(MOZ_SZIP_FLAGS)

AC_SUBST(DMG_TOOL)

dnl Host JavaScript runtime, if any, to use during cross compiles.
AC_SUBST(JS_BINARY)

if test "$MOZ_DEBUG"; then
    MOZ_EM_DEBUG=1
fi
AC_SUBST(MOZ_EM_DEBUG)

AC_SUBST(NSS_EXTRA_SYMBOLS_FILE)

if test -n "$COMPILE_ENVIRONMENT"; then
AC_CHECK_FUNCS(posix_fadvise posix_fallocate)

dnl Check for missing components
if test "$MOZ_X11"; then
    if test "$WITHOUT_X11"; then
        AC_MSG_ERROR([--without-x specified and MOZ_X11 still defined])
    fi
    dnl ====================================================
    dnl = Check if X headers exist
    dnl ====================================================
    _SAVE_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS $XCFLAGS"
    AC_TRY_COMPILE([
        #include <stdio.h>
        #include <stdlib.h>
        #include <X11/Xlib.h>
        #include <X11/Intrinsic.h>
        #include <X11/extensions/XShm.h>
    ],
    [
        Display *dpy = 0;
        if ((dpy = XOpenDisplay(NULL)) == NULL) {
            fprintf(stderr, ": can't open %s\n", XDisplayName(NULL));
            exit(1);
        }
    ], [],
    [ AC_MSG_ERROR([Can't find X headers (install libxt-dev (Debian/Ubuntu), libXt-devel (Fedora), or xorg-x11-libXt-devel (SuSE)).]) ])
    CFLAGS="$_SAVE_CFLAGS"

    if test -n "$MISSING_X"; then
        AC_MSG_ERROR([ Could not find the following X libraries: $MISSING_X ]);
    fi

fi # MOZ_X11

fi # COMPILE_ENVIRONMENT

dnl Set various defines and substitutions
dnl ========================================================

if test "$OS_ARCH" != "WINNT"; then
  AC_DEFINE(XP_UNIX)
fi

if test "$MOZ_DEBUG"; then
    AC_DEFINE(MOZ_REFLOW_PERF)
    AC_DEFINE(MOZ_REFLOW_PERF_DSP)
fi

if test "$ACCESSIBILITY" -a "$MOZ_ENABLE_GTK" ; then
    AC_DEFINE(MOZ_ACCESSIBILITY_ATK)
    ATK_FULL_VERSION=`$PKG_CONFIG --modversion atk`
    ATK_MAJOR_VERSION=`echo ${ATK_FULL_VERSION} | $AWK -F\. '{ print $1 }'`
    ATK_MINOR_VERSION=`echo ${ATK_FULL_VERSION} | $AWK -F\. '{ print $2 }'`
    ATK_REV_VERSION=`echo ${ATK_FULL_VERSION} | $AWK -F\. '{ print $3 }'`
    AC_DEFINE_UNQUOTED(ATK_MAJOR_VERSION, $ATK_MAJOR_VERSION)
    AC_DEFINE_UNQUOTED(ATK_MINOR_VERSION, $ATK_MINOR_VERSION)
    AC_DEFINE_UNQUOTED(ATK_REV_VERSION, $ATK_REV_VERSION)
fi

if test -n "$MOZ_DEV_EDITION"; then
    AC_DEFINE(MOZ_DEV_EDITION)
fi

if test "$MOZ_DEBUG"; then
    A11Y_LOG=1
fi
case "$MOZ_UPDATE_CHANNEL" in
aurora|beta|release|esr)
    ;;
*)
    A11Y_LOG=1
    ;;
esac
AC_SUBST(A11Y_LOG)
if test -n "$A11Y_LOG"; then
    AC_DEFINE(A11Y_LOG)
fi

AC_SUBST(MOZILLA_VERSION)

AC_SUBST(ac_configure_args)

dnl Spit out some output
dnl ========================================================

dnl The following defines are used by xpcom
_NON_GLOBAL_ACDEFINES="$_NON_GLOBAL_ACDEFINES
CPP_THROW_NEW
HAVE_CPP_AMBIGUITY_RESOLVING_USING
HAVE_CPP_DYNAMIC_CAST_TO_VOID_PTR
HAVE_CPP_PARTIAL_SPECIALIZATION
HAVE_GETPAGESIZE
HAVE_ICONV
HAVE_ICONV_WITH_CONST_INPUT
HAVE_MBRTOWC
HAVE_WCRTOMB
HAVE_STATVFS64
HAVE_STATVFS
HAVE_STATFS64
HAVE_STATFS
HAVE_SYS_STATVFS_H
HAVE_SYS_STATFS_H
HAVE_SYS_VFS_H
HAVE_SYS_MOUNT_H
"

dnl ========================================================
dnl ICU Support
dnl ========================================================

# Internationalization isn't built or exposed by default in non-desktop
# builds.  Bugs to enable:
#
#   Android:  bug 864843

if test "$MOZ_WIDGET_TOOLKIT" = "android"; then
    _INTL_API=no
else
    _INTL_API=yes
fi

if test "$MOZ_WIDGET_TOOLKIT" = "cocoa"; then
    USE_ICU=1
fi

MOZ_CONFIG_ICU()

if test -z "$JS_SHARED_LIBRARY"; then
  AC_DEFINE(MOZ_STATIC_JS)
fi
AC_SUBST(JS_SHARED_LIBRARY)

MOZ_CREATE_CONFIG_STATUS()

if test "$COMPILE_ENVIRONMENT"; then
  MOZ_SUBCONFIGURE_ICU()
  MOZ_SUBCONFIGURE_FFI()
  MOZ_SUBCONFIGURE_JEMALLOC()
fi

# Run freetype configure script

if test "$MOZ_TREE_FREETYPE"; then
   export CFLAGS="$CFLAGS $MOZ_DEBUG_FLAGS -std=c99"
   export CPPFLAGS="$CPPFLAGS $MOZ_DEBUG_FLAGS"
   export CXXFLAGS="$CXXFLAGS $MOZ_DEBUG_FLAGS"
   export LDFLAGS="$LDFLAGS $MOZ_DEBUG_LDFLAGS"
   # Spaces in the *_CFLAGS and *_LIBS variables are intentionally placed
   # to force freetype to use our settings rather than autodetecting
   if test -n "$MOZ_NATIVE_PNG"; then
     export LIBPNG_CFLAGS="$MOZ_PNG_CFLAGS "
   else
     export LIBPNG_CFLAGS="-I$_objdir/dist/include"
   fi
   export LIBPNG_LIBS="$MOZ_PNG_LIBS "
   export ZLIB_CFLAGS="$MOZ_ZLIB_CFLAGS "
   export ZLIB_LIBS="$MOZ_ZLIB_LIBS "
   export CONFIG_FILES="unix-cc.mk:unix-cc.in unix-def.mk:unix-def.in freetype-config freetype2.pc:freetype2.in"
   ac_configure_args="$ac_configure_args --host=$target --disable-shared --with-pic=yes --with-zlib=yes --without-bzip2 --with-png=yes --without-harfbuzz"

   if ! test -e modules; then
     mkdir modules
   fi
   # Only export CC, CXX and RANLIB for the subconfigure, and avoid spilling
   # that further down the road.
   (export CC CXX RANLIB;
    AC_OUTPUT_SUBDIRS(modules/freetype2)
   ) || exit 1
fi

if test -z "$direct_nspr_config"; then
    dnl ========================================================
    dnl = Setup a nice relatively clean build environment for
    dnl = sub-configures.
    dnl ========================================================
    CC="$_SUBDIR_CC"
    CXX="$_SUBDIR_CXX"
    CFLAGS="$_SUBDIR_CFLAGS"
    CPPFLAGS="$_SUBDIR_CPPFLAGS"
    CXXFLAGS="$_SUBDIR_CXXFLAGS"
    LDFLAGS="$_SUBDIR_LDFLAGS"
    HOST_CC="$_SUBDIR_HOST_CC"
    HOST_CFLAGS="$_SUBDIR_HOST_CFLAGS"
    HOST_CXXFLAGS="$_SUBDIR_HOST_CXXFLAGS"
    HOST_LDFLAGS="$_SUBDIR_HOST_LDFLAGS"
    RC=
fi

unset MAKEFILES
unset CONFIG_FILES

# Run all configure scripts specified by a subconfigure
if test -n "$_subconfigure_subdir"; then
  _save_srcdir="$srcdir"
  srcdir="$srcdir/.."
  _save_ac_configure_args="$ac_configure_args"
  ac_configure_args="$_subconfigure_config_args"
  AC_OUTPUT_SUBDIRS_NOW("$_subconfigure_subdir",$cache_file)
  ac_configure_args="$_save_ac_configure_args"
  srcdir="$_save_srcdir"
fi

if test "$COMPILE_ENVIRONMENT"; then

export WRAP_LDFLAGS

MOZ_SUBCONFIGURE_NSPR()

dnl ========================================================
dnl = Setup a nice relatively clean build environment for
dnl = sub-configures.
dnl ========================================================
CC="$_SUBDIR_CC"
CXX="$_SUBDIR_CXX"
CFLAGS="$_SUBDIR_CFLAGS"
CPPFLAGS="$_SUBDIR_CPPFLAGS"
CXXFLAGS="$_SUBDIR_CXXFLAGS"
LDFLAGS="$_SUBDIR_LDFLAGS"
HOST_CC="$_SUBDIR_HOST_CC"
HOST_CFLAGS="$_SUBDIR_HOST_CFLAGS"
HOST_CXXFLAGS="$_SUBDIR_HOST_CXXFLAGS"
HOST_LDFLAGS="$_SUBDIR_HOST_LDFLAGS"
RC=

# Run the SpiderMonkey 'configure' script.
dist=$MOZ_BUILD_ROOT/dist
ac_configure_args="$_SUBDIR_CONFIG_ARGS"

# --with-system-nspr will have been converted into the relevant $NSPR_CFLAGS
# and $NSPR_LIBS.
ac_configure_args="`echo $ac_configure_args | sed -e 's/--with-system-nspr\S* *//'`"

ac_configure_args="$ac_configure_args --enable-threadsafe"

if test "$_INTL_API" = no; then
    ac_configure_args="$ac_configure_args --without-intl-api"
fi

if test "$BUILD_CTYPES"; then
    # Build js-ctypes on the platforms we can.
    ac_configure_args="$ac_configure_args --enable-ctypes"
fi
if test -z "$JS_SHARED_LIBRARY" ; then
    ac_configure_args="$ac_configure_args --disable-shared-js"
    if test -n "$MOZ_DISABLE_EXPORT_JS"; then
        ac_configure_args="$ac_configure_args --disable-export-js"
    fi
fi
if test -n "$NSPR_CFLAGS" -o -n "$NSPR_LIBS"; then
    ac_configure_args="$ac_configure_args --with-nspr-cflags='$NSPR_CFLAGS'"
    ac_configure_args="$ac_configure_args --with-nspr-libs='$NSPR_LIBS'"
fi
ac_configure_args="$ac_configure_args --prefix=$dist"
if test "$MOZ_MEMORY"; then
   ac_configure_args="$ac_configure_args --enable-jemalloc"
fi
if test -n "$ZLIB_IN_MOZGLUE"; then
   MOZ_ZLIB_LIBS=
fi
export MOZ_NATIVE_ZLIB
export MOZ_ZLIB_CFLAGS
export MOZ_ZLIB_LIBS
export MOZ_APP_NAME
export MOZ_APP_REMOTINGNAME
export DONT_POPULATE_VIRTUALENV=1
export PYTHON
export MOZILLA_CENTRAL_PATH=$_topsrcdir
export STLPORT_CPPFLAGS
export STLPORT_LIBS
export JS_STANDALONE=no
export MOZ_LINKER
export ZLIB_IN_MOZGLUE
export MOZ_MEMORY

if ! test -e js; then
    mkdir js
fi

AC_OUTPUT_SUBDIRS(js/src,$cache_file)
ac_configure_args="$_SUBDIR_CONFIG_ARGS"

fi # COMPILE_ENVIRONMENT

export WRITE_MOZINFO=1
dnl we need to run config.status after js/src subconfigure because we're
dnl traversing its moz.build and we need its config.status for that.
dnl However, writing our own config.status needs to happen before
dnl subconfigures because the setup surrounding subconfigures alters
dnl many AC_SUBSTed variables.
MOZ_RUN_CONFIG_STATUS()
unset WRITE_MOZINFO