old-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

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=}"

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=10634
NSPR_VERSION=4
NSPR_MINVER=4.18
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
CAIRO_VERSION=1.10
GTK2_VERSION=2.18.0
GTK3_VERSION=3.4.0
GDK_VERSION_MAX_ALLOWED=GDK_VERSION_3_4
WINDRES_VERSION=2.14.90
W32API_VERSION=3.14
GCONF_VERSION=1.2.1
STARTUP_NOTIFICATION_VERSION=0.8
DBUS_VERSION=0.60
SQLITE_VERSION=3.21.0

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

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

MOZ_DEFAULT_COMPILER

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

case "$target" in
*-android*|*-linuxandroid*)
    AC_DEFINE(ANDROID)
    ;;
*-linux*)
    AC_PATH_PROG(OBJCOPY,objcopy)
    ;;
esac

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 "$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, $CC)
    AC_CHECK_PROGS(AR, ar, :)
    AC_CHECK_PROGS(STRIP, strip, :)
    AC_CHECK_PROGS(WINDRES, windres, :)
    AC_CHECK_PROGS(OTOOL, otool, :)
    if test -z "$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

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

WINVER=601

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([,])

        _MSC_VER=`echo ${CC_VERSION} | cut -c 1-2,4-5`

        AC_DEFINE(_CRT_SECURE_NO_WARNINGS)
        AC_DEFINE(_CRT_NONSTDC_NO_WARNINGS)
        AC_DEFINE(_USE_MATH_DEFINES) # Otherwise MSVC's math.h doesn't #define M_PI.

        _CC_SUITE=14
        MSVC_C_RUNTIME_DLL=vcruntime140.dll
        MSVC_CXX_RUNTIME_DLL=msvcp140.dll

        MOZ_CHECK_HEADER(dia2.h, MSVC_HAS_DIA_SDK=1)
        if test -n "$MSVC_HAS_DIA_SDK"; then
            AC_DEFINE(MSVC_HAS_DIA_SDK)
        fi

        if test "$_MSC_VER" -ge "1910"; then # VS2017+
            # C5038: Enable initializer list order warnings
            # The -w1#### flag treats warning C#### as if it was a warning level
            # 1 warning, and thus enables it because we enable /W3 warnings. We
            # don't use -we#### because it would enable warning C#### but treat
            # it as an error, even in third-party code.
            # https://docs.microsoft.com/en-us/cpp/build/reference/compiler-option-warning-level
            CXXFLAGS="$CXXFLAGS -w15038"
        fi

        # C5026: move constructor was implicitly defined as deleted
        CXXFLAGS="$CXXFLAGS -wd5026"

        # C5027: move assignment operator was implicitly defined as deleted
        CXXFLAGS="$CXXFLAGS -wd5027"

        # -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"

        # This is intended as a temporary hack to support building with VS2015.
        # 'noexcept' used with no exception handling mode specified;
        # termination on exception is not guaranteed. Specify /EHsc
        CXXFLAGS="$CXXFLAGS -wd4577"

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

        AC_SUBST(MSVC_HAS_DIA_SDK)
        AC_SUBST(MSVC_C_RUNTIME_DLL)
        AC_SUBST(MSVC_CXX_RUNTIME_DLL)

        AC_DEFINE(HAVE_SEH_EXCEPTIONS)

        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 -W`
        fi

        # Check linker version, except in lld builds
        case "$LINKER" in
        *lld*)
            ;;
        *)
            _LD_FULL_VERSION=`"${LINKER}" -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
            ;;
        esac

        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

    AC_DEFINE_UNQUOTED(WINVER,0x$WINVER)
    AC_DEFINE_UNQUOTED(_WIN32_WINNT,0x$WINVER)
    # Require OS features provided by IE 8.0 (Win7)
    AC_DEFINE_UNQUOTED(_WIN32_IE,0x0800)

    ;;
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_ISATTY)
fi

fi # COMPILE_ENVIRONMENT

AC_SUBST(MIDL_FLAGS)
AC_SUBST(_MSC_VER)

AC_SUBST(GNU_AS)
AC_SUBST(GNU_CC)
AC_SUBST(GNU_CXX)

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

dnl ========================================================
dnl Checks for programs.
dnl ========================================================
if test "$COMPILE_ENVIRONMENT"; then

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

AC_PATH_XTRA

XCFLAGS="$X_CFLAGS"

fi # COMPILE_ENVIRONMENT

dnl ========================================================
dnl set the defaults first
dnl ========================================================
AS_BIN=$AS
AR_EXTRACT='$(AR) x'
AS='$(CC)'
AS_DASH_C_FLAG='-c'
MOZ_USER_DIR=".mozilla"

MOZ_FIX_LINK_PATHS="-Wl,-rpath-link,${DIST}/bin -Wl,-rpath-link,${prefix}/lib"

MOZ_FS_LAYOUT=unix

dnl Configure platform-specific CPU architecture compiler options.
dnl ==============================================================
if test "$COMPILE_ENVIRONMENT"; then
    MOZ_ARCH_OPTS
else
    if test "$OS_TARGET" = Android; then
        dnl Default Android builds to ARMv7.
        MOZ_ARCH=armv7-a
    fi
fi # COMPILE_ENVIRONMENT

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

MOZ_ANDROID_CPU_ARCH
if test "$COMPILE_ENVIRONMENT"; then
    MOZ_ANDROID_STLPORT
fi # COMPILE_ENVIRONMENT

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

if test -n "$COMPILE_ENVIRONMENT"; then
   MOZ_CONFIG_SANITIZE
fi

dnl ========================================================
dnl Add optional and non-optional hardening flags
dnl ========================================================

CFLAGS="$CFLAGS $MOZ_HARDENING_CFLAGS"
CPPFLAGS="$CPPFLAGS $MOZ_HARDENING_CFLAGS"
CXXFLAGS="$CXXFLAGS $MOZ_HARDENING_CFLAGS"

dnl ========================================================
dnl GNU specific defaults
dnl ========================================================
if test "$GNU_CC"; then
    MMX_FLAGS="-mmmx"
    SSE_FLAGS="-msse"
    SSE2_FLAGS="-msse2"
    SSSE3_FLAGS="-mssse3"
    # FIXME: Let us build with strict aliasing. bug 414641.
    CFLAGS="$CFLAGS -fno-strict-aliasing"
    MKSHLIB='$(CXX) $(COMPUTED_CXX_LDFLAGS) $(PGO_CFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -Wl,-h,$(DSO_SONAME) -o $@'
    MKCSHLIB='$(CC) $(COMPUTED_C_LDFLAGS) $(PGO_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]),
                  AC_MSG_RESULT([no])
                  LDFLAGS=$_SAVE_LDFLAGS)

    AC_MSG_CHECKING([for -z relro option to ld])
    _SAVE_LDFLAGS=$LDFLAGS
    LDFLAGS="$LDFLAGS -Wl,-z,relro"
    AC_TRY_LINK(,,AC_MSG_RESULT([yes]),
                  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]),
                  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
      ;;

    ppc*)
      AC_MSG_CHECKING([whether we can enable AltiVec support])
      HAVE_ALTIVEC=
      _SAVE_CFLAGS=$CFLAGS
      CFLAGS="$CFLAGS -maltivec"
      AC_TRY_COMPILE(,,AC_MSG_RESULT([yes])
                       [HAVE_ALTIVEC=1],
                       AC_MSG_RESULT([no]))
      CFLAGS=$_SAVE_CFLAGS
      ;;
    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

    _DEFINES_CFLAGS="-include $_objdir/mozilla-config.h -DMOZILLA_CLIENT"
    _USE_CPP_INCLUDE_FLAG=1

    ASFLAGS="$ASFLAGS $_DEFINES_CFLAGS"
fi

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

    _DEFINES_CXXFLAGS="-DMOZILLA_CLIENT -include $_objdir/mozilla-config.h"
    _USE_CPP_INCLUDE_FLAG=1
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)

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

if test "$MOZ_DMD"; then
    if test "${CPU_ARCH}" = "arm"; then
        CFLAGS="$CFLAGS -funwind-tables"
        CXXFLAGS="$CXXFLAGS -funwind-tables"
    fi
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 -D_CRT_SECURE_NO_WARNINGS"
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O2}"
    HOST_BIN_SUFFIX=.exe

    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="$HOST_CFLAGS -DXP_UNIX -DXP_MACOSX"
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O3}"
    ;;

*-linux*|*-kfreebsd*-gnu|*-gnu*)
    HOST_CFLAGS="$HOST_CFLAGS -DXP_UNIX"
    HOST_OPTIMIZE_FLAGS="${HOST_OPTIMIZE_FLAGS=-O3}"
    ;;

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

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

MOZ_DOING_LTO(lto_is_enabled)

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

case "$target" in
*-darwin*)
    MKSHLIB='$(CXX) $(COMPUTED_CXX_LDFLAGS) $(PGO_CFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -o $@'
    MKCSHLIB='$(CC) $(COMPUTED_C_LDFLAGS) $(PGO_CFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -o $@'
    MOZ_OPTIMIZE_FLAGS="-O3"
    CXXFLAGS="$CXXFLAGS -stdlib=libc++"
    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
        direct_nspr_config=1
    else
        # 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

    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

    MOZ_FIX_LINK_PATHS="-Wl,-executable_path,${DIST}/bin"
    ;;

*-android*|*-linuxandroid*)
    AC_DEFINE(NO_PW_GECOS)

    if test "$COMPILE_ENVIRONMENT"; then
        MOZ_LINKER=1
    fi

    MOZ_GFX_OPTIMIZE_MOBILE=1
    if test -z "$CLANG_CC"; then
        MOZ_OPTIMIZE_FLAGS="-freorder-blocks -fno-reorder-functions -Os"
    else
        # From https://github.com/android-ndk/ndk/issues/133#issuecomment-308549264
        # -Oz is smaller than -Os on clang.
        MOZ_OPTIMIZE_FLAGS="-Oz"
    fi
    ;;

*-*linux*)
    if test "$GNU_CC" -o "$GNU_CXX"; then
        MOZ_PGO_OPTIMIZE_FLAGS="-O3"
        if test -n "$MOZ_DEBUG"; then
            MOZ_OPTIMIZE_FLAGS="-Os"
        else
            MOZ_OPTIMIZE_FLAGS="-O2"
        fi
        if test -z "$CLANG_CC"; then
           MOZ_OPTIMIZE_FLAGS="-freorder-blocks $MOZ_OPTIMIZE_FLAGS"
        fi
    fi

    case "${target_cpu}" in
    alpha*)
        CFLAGS="$CFLAGS -mieee"
        CXXFLAGS="$CXXFLAGS -mieee"
    ;;
    esac
    ;;
*-mingw*)
    DSO_CFLAGS=
    DSO_PIC_CFLAGS=
    RC=rc.exe
    # certain versions of cygwin's makedepend barf on the
    # #include <string> vs -I./dist/include/string issue so don't use it
    if test -n "$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="$LDFLAGS -static"
        # Use temp file for windres (bug 213281)
        RCFLAGS='-O coff --use-temp-file'
        # mingw doesn't require kernel32, user32, and advapi32 explicitly
        LIBS="$LIBS -luuid -lgdi32 -lwinmm -lwsock32 -luserenv -lsecur32"
        MOZ_FIX_LINK_PATHS=

        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"
    else
        TARGET_COMPILER_ABI=msvc
        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
        MKSHLIB='$(LINKER) -NOLOGO -DLL -OUT:$@ -PDB:$(LINK_PDBFILE) $(DSO_LDOPTS)'
        MKCSHLIB='$(LINKER) -NOLOGO -DLL -OUT:$@ -PDB:$(LINK_PDBFILE) $(DSO_LDOPTS)'
        WIN32_SUBSYSTEM_VERSION=6.01
        WIN32_CONSOLE_EXE_LDFLAGS=-SUBSYSTEM:CONSOLE,$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 $_objdir/mozilla-config.h -DMOZILLA_CLIENT"
        _DEFINES_CXXFLAGS="-FI $_objdir/mozilla-config.h -DMOZILLA_CLIENT"
        CFLAGS="$CFLAGS -W3 -Gy -Zc:inline"
        CXXFLAGS="$CXXFLAGS -W3 -Gy -Zc:inline"
        if test -z "$CLANG_CL"; then
            CPPFLAGS="$CPPFLAGS -utf-8"
        fi
        if test "$CPU_ARCH" = "x86"; then
            dnl VS2012+ defaults to -arch:SSE2. We want to target nothing
            dnl more recent, so set that explicitly here unless another
            dnl target arch has already been set.
            changequote(,)
            if test -z `echo $CFLAGS | grep -i [-/]arch:`; then
              CFLAGS="$CFLAGS -arch:SSE2"
            fi
            if test -z `echo $CXXFLAGS | grep -i [-/]arch:`; then
              CXXFLAGS="$CXXFLAGS -arch:SSE2"
            fi
            changequote([,])
            SSE_FLAGS="-arch:SSE"
            SSE2_FLAGS="-arch:SSE2"
            dnl MSVC allows the use of intrinsics without any flags
            dnl and doesn't have a separate arch for SSSE3
            SSSE3_FLAGS="-arch:SSE2"
        fi
        dnl clang-cl requires appropriate flags to enable SSSE3 support
        dnl on all architectures.
        if test -n "$CLANG_CL"; then
            SSSE3_FLAGS="-mssse3"
        fi
        dnl VS2013+ supports -Gw for better linker optimizations.
        dnl http://blogs.msdn.com/b/vcblog/archive/2013/09/11/introducing-gw-compiler-switch.aspx
        dnl Disabled on ASan because it causes false-positive ODR violations.
        if test -z "$MOZ_ASAN"; then
            CFLAGS="$CFLAGS -Gw"
            CXXFLAGS="$CXXFLAGS -Gw"
        fi
        # 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 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 C4595 warns non-member operator new or delete functions
        # may not be declared inline, as of VS2015 Update 2.
        CFLAGS="$CFLAGS -wd4244 -wd4267"
        CXXFLAGS="$CXXFLAGS -wd4251 -wd4244 -wd4267 -wd4800 -wd4595"
        if test -n "$CLANG_CL"; then
            # XXX We should combine some of these with our generic GCC-style
            # warning checks.
            #
            # Suppress the clang-cl warning for the inline 'new' and 'delete' in mozalloc
            CXXFLAGS="$CXXFLAGS -Wno-inline-new-delete"
            # We use offsetof on non-POD objects all the time.
            # We also suppress this warning on other platforms.
            CXXFLAGS="$CXXFLAGS -Wno-invalid-offsetof"
            # This warns for reasonable things like:
            #   enum { X = 0xffffffffU };
            # which is annoying for IDL headers.
            CXXFLAGS="$CXXFLAGS -Wno-microsoft-enum-value"
            # This warns for cases that would be reached by the Microsoft
            # #include rules, but also currently warns on cases that would
            # *also* be reached by standard C++ include rules.  That
            # behavior doesn't seem useful, so we turn it off.
            CXXFLAGS="$CXXFLAGS -Wno-microsoft-include"
            # We normally error out on unknown pragmas, but since clang-cl
            # claims to be MSVC, it would be difficult to add
            # #if defined(_MSC_VER) && !defined(__clang__) everywhere we
            # use such pragmas, so just ignore them.
            CFLAGS="$CFLAGS -Wno-unknown-pragmas"
            CXXFLAGS="$CXXFLAGS -Wno-unknown-pragmas"
            # We get errors about various #pragma intrinsic directives from
            # clang-cl, and we don't need to hear about those.
            CFLAGS="$CFLAGS -Wno-ignored-pragmas"
            CXXFLAGS="$CXXFLAGS -Wno-ignored-pragmas"
            # clang-cl's Intrin.h marks things like _ReadWriteBarrier
            # as __attribute((__deprecated__)).  This is nice to know,
            # but since we don't get the equivalent warning from MSVC,
            # let's just ignore it.
            CFLAGS="$CFLAGS -Wno-deprecated-declarations"
            CXXFLAGS="$CXXFLAGS -Wno-deprecated-declarations"
            # We use a function like:
            #   __declspec(noreturn) __inline void f() {}
            # which -Winvalid-noreturn complains about.  Again, MSVC seems
            # OK with it, so let's silence the warning.
            CFLAGS="$CFLAGS -Wno-invalid-noreturn"
            CXXFLAGS="$CXXFLAGS -Wno-invalid-noreturn"
            # Missing |override| on virtual function declarations isn't
            # something that MSVC currently warns about.
            CXXFLAGS="$CXXFLAGS -Wno-inconsistent-missing-override"
            # We use -DHAS_EXCEPTIONS=0, which removes the |throw()|
            # declaration on |operator delete(void*)|.  However, clang-cl
            # must internally declare |operator delete(void*)| differently,
            # which causes this warning for virtually every file in the
            # tree.  clang-cl doesn't support -fno-exceptions or equivalent,
            # so there doesn't seem to be any way to convince clang-cl to
            # declare |delete| differently.  Therefore, suppress this
            # warning.
            CXXFLAGS="$CXXFLAGS -Wno-implicit-exception-spec-mismatch"
            # At least one MSVC header and several headers in-tree have
            # unused typedefs, so turn this on.
            CXXFLAGS="$CXXFLAGS -Wno-unused-local-typedef"
            # jemalloc uses __declspec(allocator) as a profiler hint,
            # which clang-cl doesn't understand.
            CXXFLAGS="$CXXFLAGS -Wno-ignored-attributes"
        fi
        # make 'foo == bar;' error out
        CFLAGS="$CFLAGS -we4553"
        CXXFLAGS="$CXXFLAGS -we4553"
        # Silence VS2017 15.5+ TR1 deprecation warnings hit by older gtest versions
        CXXFLAGS="$CXXFLAGS -D_SILENCE_TR1_NAMESPACE_DEPRECATION_WARNING"
        LIBS="$LIBS kernel32.lib user32.lib gdi32.lib winmm.lib wsock32.lib advapi32.lib secur32.lib"
        MOZ_DEBUG_LDFLAGS='-DEBUG -DEBUGTYPE:CV'
        WARNINGS_AS_ERRORS='-WX'
        MOZ_OPTIMIZE_FLAGS='-O1 -Oi'
        MOZ_FIX_LINK_PATHS=
        LDFLAGS="$LDFLAGS -LARGEADDRESSAWARE -NXCOMPAT"
        if test -z "$DEVELOPER_OPTIONS"; then
            LDFLAGS="$LDFLAGS -RELEASE"
        fi
        LDFLAGS="$LDFLAGS -DYNAMICBASE"
        RCFLAGS="-nologo"
        dnl Minimum reqiurement of Gecko is VS2015 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 VS2015
        HAVE_X86_AVX2=1
    fi
    AC_DEFINE(WIN32_LEAN_AND_MEAN)
    dnl See http://support.microsoft.com/kb/143208 to use STL
    AC_DEFINE(NOMINMAX)
    BIN_SUFFIX='.exe'
    MOZ_USER_DIR="Mozilla"

    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 "$target" in
    i*86-*)
        if test -n "$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"
            LDFLAGS="$LDFLAGS -SAFESEH"
        fi

        AC_DEFINE(_X86_)
        ;;
    x86_64-*)
        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 $CC -E - -dM </dev/null | grep __ELF__ >/dev/null; then
        DSO_PIC_CFLAGS='-fPIC -DPIC'
        DSO_LDOPTS='-shared'
        MOZ_PROGRAM_LDFLAGS="$MOZ_PROGRAM_LDFLAGS -Wl,--export-dynamic"
    else
        DSO_PIC_CFLAGS='-fPIC -DPIC'
        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) $(COMPUTED_CXX_LDFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -Wl,-soname,$(DSO_SONAME) -o $@'
    MKCSHLIB='$(CC) $(COMPUTED_C_LDFLAGS) $(DSO_PIC_CFLAGS) $(DSO_LDOPTS) -Wl,-soname,$(DSO_SONAME) -o $@'
    ;;

*-openbsd*)
    if test -z "$X11BASE"; then
        X11BASE=/usr/X11R6
    fi
    MOZ_FIX_LINK_PATHS="$MOZ_FIX_LINK_PATHS -Wl,-rpath-link,${X11BASE}/lib"
    DSO_CFLAGS=''
    DSO_PIC_CFLAGS='-fPIC'
    DSO_LDOPTS='-shared -fPIC'
    if test "$LIBRUNPATH"; then
        DSO_LDOPTS="-R$LIBRUNPATH $DSO_LDOPTS"
    fi
    ;;

*-solaris*)
    MOZ_FIX_LINK_PATHS="-L${DIST}/bin"
    ;;

esac

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

AC_SUBST_LIST(MMX_FLAGS)
AC_SUBST_LIST(SSE_FLAGS)
AC_SUBST_LIST(SSE2_FLAGS)
AC_SUBST_LIST(SSSE3_FLAGS)

AC_SUBST(MOZ_LINKER)
if test -n "$MOZ_LINKER"; then
  AC_DEFINE(MOZ_LINKER)
  MOZ_LINKER_EXTRACT=1
  AC_CHECK_PROGS(XZ, xz)
fi

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

if test -z "$SKIP_COMPILER_CHECKS"; then
dnl Checks for typedefs, structures, and compiler characteristics.
dnl ========================================================
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

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

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

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)

dnl Checks for libraries.
dnl ========================================================
AC_CHECK_LIB(c_r, gethostbyname_r)

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
    AC_CHECK_LIB(C, demangle)
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 -n "$MOZ_X11"; then
    AC_DEFINE_UNQUOTED(FUNCPROTO,15)
    _SAVE_LDFLAGS="$LDFLAGS"
    _SAVE_LIBS="$LIBS"
    LDFLAGS="$XLDFLAGS $LDFLAGS"
    AC_CHECK_LIB(X11, XDrawLines, [XLIBS="-lX11 $XLIBS"],
        [MISSING_X="$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)
        ])

    dnl ========================================================
    dnl = Check for xcb
    dnl ========================================================
    AC_CHECK_LIB(xcb, xcb_connect, [XLIBS="-lxcb $XLIBS"],
        [MISSING_X="$MISSING_X -lxcb"], $XLIBS)
    AC_CHECK_LIB(xcb-shm, xcb_shm_query_version, [XLIBS="-lxcb-shm $XLIBS"],
        [MISSING_X="$MISSING_X -lxcb-shm"], $XLIBS)
    AC_CHECK_LIB(X11-xcb, XGetXCBConnection, [XLIBS="-lX11-xcb $XLIBS"],
        [MISSING_X="$MISSING_X -lX11-xcb"], $XLIBS)

    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="$_SAVE_LDFLAGS"
    LIBS="$_SAVE_LIBS"
fi # $MOZ_X11

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)
            ;;

    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 mallinfo gettid lchown setpriority strerror syscall)

dnl check for clock_gettime(), the CLOCK_MONOTONIC clock
dnl avoid this on Darwin, since depending on your system config, we may think
dnl it exists but it really doesn't
case "$OS_TARGET" in
Darwin)
  ;;
*)
  AC_CACHE_CHECK(for clock_gettime(CLOCK_MONOTONIC),
                 ac_cv_clock_monotonic,
                 [for libs in "" -lrt; do
                      _SAVE_LIBS="$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
  ;;
esac

AC_CACHE_CHECK(for pthread_cond_timedwait_monotonic_np,
               ac_cv_pthread_cond_timedwait_monotonic_np,
               AC_TRY_LINK([#include <pthread.h>],
                           [pthread_cond_timedwait_monotonic_np(0, 0, 0);],
                           ac_cv_pthread_cond_timewait_monotonic_np=yes,
                           ac_cv_pthread_cond_timewait_monotonic_np=no))
if test "$ac_cv_pthread_cond_timewait_monotonic_np" != "no"; then
    AC_DEFINE(HAVE_PTHREAD_COND_TIMEDWAIT_MONOTONIC)
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_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 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"
  fi
fi

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.

AC_HAVE_FUNCS(localeconv)

fi # ! SKIP_COMPILER_CHECKS

if test -n "${COMPILE_ENVIRONMENT}"; then
  MOZ_CHECK_ALLOCATOR
fi

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)

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

MOZ_CONFIG_NSPR()

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

AC_SUBST(MOZ_SYSTEM_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(3.36, [MOZ_SYSTEM_NSS=1], [AC_MSG_ERROR([you don't have NSS installed or your version is too old])])
fi

if test -n "$MOZ_SYSTEM_NSS"; then
   NSS_LIBS="$NSS_LIBS -lcrmf"
else
   NSS_CFLAGS="-I${DIST}/include/nss"
   case "${OS_ARCH}" in
        # Only few platforms have been tested with GYP
        WINNT|Darwin|Linux|DragonFly|FreeBSD|NetBSD|OpenBSD|SunOS)
            ;;
        *)
            AC_MSG_ERROR([building in-tree NSS is not supported on this platform. Use --with-system-nss])
            ;;
   esac
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_SYSTEM_JPEG=
else
    AC_CHECK_LIB(jpeg, jpeg_destroy_compress, [MOZ_SYSTEM_JPEG=1 MOZ_JPEG_LIBS="-ljpeg"], MOZ_SYSTEM_JPEG=)
fi

if test "$MOZ_SYSTEM_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_SYSTEM_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 "$MOZ_SYSTEM_JPEG" = 1; then
    MOZ_JPEG_CFLAGS="-I${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 -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 "$BZ2_DIR" = no; then
    MOZ_SYSTEM_BZ2=
else
    AC_CHECK_LIB(bz2, BZ2_bzread, [MOZ_SYSTEM_BZ2=1 MOZ_BZ2_LIBS="-lbz2"],
    [MOZ_SYSTEM_BZ2= MOZ_BZ2_CFLAGS= MOZ_BZ2_LIBS=])
fi
CFLAGS=$_SAVE_CFLAGS
LDFLAGS=$_SAVE_LDFLAGS
LIBS=$_SAVE_LIBS

if test "${BZ2_DIR}" -a -d "${BZ2_DIR}" -a "$MOZ_SYSTEM_BZ2" = 1; then
    MOZ_BZ2_CFLAGS="-I${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 "$PNG_DIR" = no; then
    MOZ_SYSTEM_PNG=
else
    AC_CHECK_LIB(png, png_get_valid, [MOZ_SYSTEM_PNG=1 MOZ_PNG_LIBS="-lpng"],
                 AC_MSG_ERROR([--with-system-png requested but no working libpng found]))
    AC_CHECK_LIB(png, png_get_acTL, ,
                 AC_MSG_ERROR([--with-system-png won't work because the system's libpng doesn't have APNG support]))
fi
if test "$MOZ_SYSTEM_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_SYSTEM_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 "$MOZ_SYSTEM_PNG" = 1; then
    MOZ_PNG_CFLAGS="-I${PNG_DIR}/include"
    MOZ_PNG_LIBS="-L${PNG_DIR}/lib ${MOZ_PNG_LIBS}"
fi

fi # SKIP_LIBRARY_CHECKS

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

MOZ_ARG_HEADER(Application)

ENABLE_SYSTEM_EXTENSION_DIRS=1
MOZ_BRANDING_DIRECTORY=
MOZ_OFFICIAL_BRANDING=
MOZ_FEEDS=1
MOZ_AUTH_EXTENSION=1
if test "$MOZ_IOS"; then
   MOZ_AUTH_EXTENSION=
fi
MOZ_RAW=
MOZ_VORBIS=
MOZ_TREMOR=
MOZ_SAMPLE_TYPE_FLOAT32=
MOZ_SAMPLE_TYPE_S16=
MOZ_SRTP=
MOZ_WEBRTC_HARDWARE_AEC_NS=
MOZ_SCTP=
VPX_USE_YASM=
VPX_ASFLAGS=
VPX_AS_CONVERSION=
VPX_X86_ASM=
VPX_ARM_ASM=
LIBJPEG_TURBO_AS=
LIBJPEG_TURBO_ASFLAGS=
MOZ_PREF_EXTENSIONS=1
MOZ_REFLOW_PERF=
MOZ_SPELLCHECK=1
MOZ_TOOLKIT_SEARCH=1
MOZ_UNIVERSALCHARDET=1
MOZ_XUL=1
MOZ_ZIPWRITER=1
MOZ_NO_SMART_CARDS=
NECKO_COOKIES=1
MOZ_USE_NATIVE_POPUP_WINDOWS=
MOZ_EXCLUDE_HYPHENATION_DICTIONARIES=
ACCESSIBILITY=1
MOZ_TIME_MANAGER=
MOZ_CONTENT_SANDBOX=
MOZ_GMP_SANDBOX=
MOZ_SANDBOX=1
MOZ_BINARY_EXTENSIONS=
MOZ_DEVTOOLS=server

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

case "${target}" in
    *-android*|*-linuxandroid*)
        MOZ_RAW=1
        ;;

esac

# Optional Firefox for Android partner distribution directory.
MOZ_ARG_WITH_STRING(android-distribution-directory,
[  --with-android-distribution-directory=dir
                          Optional Firefox for Android partner distribution directory.],
  MOZ_ANDROID_DISTRIBUTION_DIRECTORY=$withval)

if test -n "$MOZ_ANDROID_DISTRIBUTION_DIRECTORY"; then
  # A distribution directory must have an assets/distribution directory.
  # See https://wiki.mozilla.org/Mobile/Distribution_Files.
  if test ! -d "$MOZ_ANDROID_DISTRIBUTION_DIRECTORY/assets/distribution" ; then
    AC_MSG_ERROR([--with-android-distribution-directory does not contain assets/distribution;
                  (looked for ${MOZ_ANDROID_DISTRIBUTION_DIRECTORY}/assets/distribution).])
  fi
fi
AC_SUBST(MOZ_ANDROID_DISTRIBUTION_DIRECTORY)

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)
  ;;

xulrunner)
  AC_DEFINE(MOZ_XULRUNNER)
  ;;
esac

# 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

AC_SUBST(MOZ_PHOENIX)
AC_SUBST(MOZ_XULRUNNER)
AC_SUBST(MOZ_MULET)

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

case "$MOZ_BUILD_APP" in
mobile/android)
    MOZ_ANDROID_SDK(23, 23, 25.0.3, 26.0.0 26.0.0-dev 25.3.2 25.3.1)
    ;;
esac

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

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

case "$MOZ_WIDGET_TOOLKIT" in

cocoa)
    LDFLAGS="$LDFLAGS -framework Cocoa -lobjc"
    # Use -Wl as a trick to avoid -framework and framework names from
    # being separated by AC_SUBST_LIST.
    TK_LIBS='-Wl,-framework,Foundation -Wl,-framework,CoreFoundation -Wl,-framework,CoreLocation -Wl,-framework,QuartzCore -Wl,-framework,Carbon -Wl,-framework,CoreAudio -Wl,-framework,CoreVideo -Wl,-framework,AudioToolbox -Wl,-framework,AudioUnit -Wl,-framework,AddressBook -Wl,-framework,OpenGL -Wl,-framework,Security -Wl,-framework,ServiceManagement -Wl,-framework,CoreServices -Wl,-framework,ApplicationServices -Wl,-framework,AppKit'
    TK_CFLAGS=""
    CFLAGS="$CFLAGS $TK_CFLAGS"
    CXXFLAGS="$CXXFLAGS $TK_CFLAGS"
    MOZ_USER_DIR="Mozilla"
    MOZ_FS_LAYOUT=bundle
    ;;

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

esac

dnl there are a lot of tests on MOZ_ENABLE_GTK below, that are more convenient
dnl to keep that way than testing against MOZ_WIDGET_TOOLKIT
case "$MOZ_WIDGET_TOOLKIT" in
gtk*)
    MOZ_ENABLE_GTK=1
    ;;
esac

if test "$COMPILE_ENVIRONMENT"; then
  if test "$MOZ_WIDGET_TOOLKIT" = 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 $MOZ_GTK3_CFLAGS"
    TK_CFLAGS=$MOZ_GTK3_CFLAGS
    TK_LIBS=$MOZ_GTK3_LIBS
    dnl GDK_VERSION_MIN_REQUIRED is not set here as GDK3 deprecated warnings
    dnl are suppressed by widget/gtk/compat-gtk3/gdk/gdkversionmacros.h.
    AC_DEFINE_UNQUOTED(GDK_VERSION_MAX_ALLOWED,$GDK_VERSION_MAX_ALLOWED)
    GLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_32
  fi
  if test "$MOZ_WIDGET_TOOLKIT" = gtk2; then
    GLIB_VERSION_MAX_ALLOWED=$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 $MOZ_GTK2_CFLAGS"
  fi
  if test "$MOZ_WIDGET_TOOLKIT" = gtk2; then
    TK_CFLAGS=$MOZ_GTK2_CFLAGS
    TK_LIBS=$MOZ_GTK2_LIBS
  fi
fi # COMPILE_ENVIRONMENT

AC_SUBST(MOZ_FS_LAYOUT)

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)

AC_SUBST_LIST(TK_CFLAGS)
AC_SUBST_LIST(TK_LIBS)

AC_SUBST(MOC)
AC_SUBST(RCC)

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

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
MOZ_ANDROID_GOOGLE_CLOUD_MESSAGING
MOZ_ANDROID_INSTALL_TRACKING


dnl ========================================================
dnl = GConf support module
dnl ========================================================

if test "$MOZ_X11"
then
    if test "$MOZ_ENABLE_GTK"
    then
        MOZ_ENABLE_GCONF=1
    fi

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

if test "$MOZ_ENABLE_GTK"
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 = Whether to exclude hyphenations files in the build
dnl =========================================================
if test -n "$MOZ_EXCLUDE_HYPHENATION_DICTIONARIES"; then
    AC_DEFINE(MOZ_EXCLUDE_HYPHENATION_DICTIONARIES)
fi

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

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)

if test -n "$MOZ_WEBRTC"; then
    MOZ_RAW=1
    MOZ_SCTP=1
    MOZ_SRTP=1
    AC_DEFINE(MOZ_SCTP)
    AC_DEFINE(MOZ_SRTP)
    if test -n "$MOZ_X11"; then
      MOZ_WEBRTC_X11_LIBS="-lXext -lXdamage -lXfixes -lXcomposite"
    fi
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_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 = 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 ========================================================
dnl = Apple platform decoder support
dnl ========================================================
if test "$COMPILE_ENVIRONMENT"; then
if test -n "$MOZ_APPLEMEDIA"; then
  # 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 system libvpx Support
dnl ========================================================
MOZ_ARG_WITH_BOOL(system-libvpx,
[  --with-system-libvpx    Use system libvpx (located with pkgconfig)],
    MOZ_SYSTEM_LIBVPX=1)

MOZ_LIBVPX_CFLAGS=
MOZ_LIBVPX_LIBS=

_SAVE_CFLAGS=$CFLAGS
_SAVE_LIBS=$LIBS
if test -n "$MOZ_SYSTEM_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 >= 1.5.0)

    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

AC_SUBST(MOZ_SYSTEM_LIBVPX)
AC_SUBST_LIST(MOZ_LIBVPX_CFLAGS)
AC_SUBST_LIST(MOZ_LIBVPX_LIBS)

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

if test -z "$MOZ_SYSTEM_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.

    dnl See if we have assembly on this platform.
    case "$OS_ARCH:$CPU_ARCH" in
    Darwin:x86)
      VPX_USE_YASM=1
      VPX_X86_ASM=1
    ;;
    Darwin:x86_64)
      VPX_USE_YASM=1
      VPX_X86_ASM=1
    ;;
    WINNT:x86_64)
      VPX_USE_YASM=1
      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_USE_YASM=1
        VPX_X86_ASM=1
        dnl The encoder needs obj_int_extract to get asm offsets.
      fi # COMPILE_ENVIRONMENT and others
    ;;
    *:arm*)
      if test -n "$GNU_AS" ; then
        dnl These flags are a lie; they're just used to enable the requisite
        dnl opcodes; actual arch detection is done at runtime.
        VPX_ASFLAGS="-march=armv7-a -mfpu=neon"
        VPX_AS_CONVERSION='$(PERL) $(topsrcdir)/media/libvpx/libvpx/build/make/ads2gas.pl'
        VPX_ARM_ASM=1
        dnl Building with -mfpu=neon requires either the "softfp" or the
        dnl "hardfp" ABI. Depending on the compiler's default target, and the
        dnl CFLAGS, the default ABI might be neither, in which case it is the
        dnl "softfloat" ABI.
        dnl The "softfloat" ABI is binary-compatible with the "softfp" ABI, so
        dnl we can safely mix code built with both ABIs. So, if we detect
        dnl that compiling uses the "softfloat" ABI, force the use of the
        dnl "softfp" ABI instead.
        dnl Confusingly, the __SOFTFP__ preprocessor variable indicates the
        dnl "softfloat" ABI, not the "softfp" ABI.
        dnl Note: VPX_ASFLAGS is also used in CFLAGS.
        AC_TRY_COMPILE([],
          [#ifndef __SOFTFP__
           #error "compiler target supports -mfpu=neon, so we don't have to add extra flags"
           #endif],
           VPX_ASFLAGS="$VPX_ASFLAGS -mfloat-abi=softfp"
           )
      fi
    ;;
    *:x86)
      if $CC -E -dM -</dev/null | grep -q __ELF__; then
        VPX_USE_YASM=1
        VPX_X86_ASM=1
      fi
    ;;
    *:x86_64)
      if $CC -E -dM -</dev/null | grep -q __ELF__; then
        VPX_USE_YASM=1
        VPX_X86_ASM=1
      fi
    ;;
    esac

    if test -n "$COMPILE_ENVIRONMENT" -a -n "$VPX_USE_YASM" -a -z "$YASM"; 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 -n "$VPX_USE_YASM" && test "$OS_ARCH:$CPU_ARCH" != "WINNT:x86_64"; then
      VPX_ASFLAGS="-DPIC"
    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 = 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)
fi

MOZ_WEBM_ENCODER=1
AC_DEFINE(MOZ_WEBM_ENCODER)
AC_SUBST(MOZ_WEBM_ENCODER)

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

MOZ_ARG_ENABLE_BOOL(alsa,
[  --enable-alsa          Enable Alsa support],
   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 Desktop Linux, ensure that the PA library is available
case "$OS_TARGET" in
WINNT|Darwin|Android|OpenBSD)
    ;;
*)
    MOZ_PULSEAUDIO=1
    ;;
esac

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

if test -n "$MOZ_PULSEAUDIO"; then
    AC_DEFINE(MOZ_PULSEAUDIO)
    PKG_CHECK_MODULES(MOZ_PULSEAUDIO, libpulse, ,
         [echo "$MOZ_PULSEAUDIO_PKG_ERRORS"
          AC_MSG_ERROR([pulseaudio audio backend requires libpulse development package])])
fi

AC_SUBST(MOZ_PULSEAUDIO)

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 )

dnl ========================================================
dnl = ANGLE OpenGL->D3D translator for WebGL
dnl = * only applies to win32 (and then, not MINGW)
dnl ========================================================

MOZ_ANGLE_RENDERER=
MOZ_D3D_CPU_SUFFIX=
MOZ_HAS_WINSDK_WITH_D3D=
MOZ_D3DCOMPILER_VISTA_DLL=
MOZ_D3DCOMPILER_VISTA_DLL_PATH=

if test "$COMPILE_ENVIRONMENT" ; then
case "$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

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
    if test "$OS_ARCH" = "$HOST_OS_ARCH"; then
      AC_MSG_ERROR([Couldn't find Windows SDK 8.1 or higher needed for ANGLE.])
    else
      AC_MSG_RESULT([Windows SDK not needed for ANGLE in Linux MinGW build.])
    fi
  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

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

  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])
  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
  fi
fi # MOZ_ANGLE_RENDERER

fi # COMPILE_ENVIRONMENT


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

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.])
    fi
    MOZ_GAMEPAD_BACKEND=linux
    ;;
Android)
    MOZ_GAMEPAD_BACKEND=android
    ;;
*)
    ;;
esac

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
  ;;
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 "$OS_TARGET" = "Linux" && \
    test -z "$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" -a -n "$COMPILE_ENVIRONMENT"; then
      MOZ_CRASHREPORTER_INJECTOR=1
      AC_DEFINE(MOZ_CRASHREPORTER_INJECTOR)
    fi
  fi
fi

dnl ========================================================
dnl = libjpeg-turbo configuration
dnl ========================================================
MOZ_LIBJPEG_TURBO=
LIBJPEG_TURBO_USE_YASM=
if test -z "$MOZ_SYSTEM_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 "$MOZ_SYSTEM_JPEG" = 1 -a "$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 "$MOZ_LIBJPEG_TURBO" -a -n "$COMPILE_ENVIRONMENT"; then

  dnl Do we support libjpeg-turbo on this platform?
  case "$OS_ARCH:$CPU_ARCH" in
  Darwin:x86)
    LIBJPEG_TURBO_ASFLAGS="-DPIC -DMACHO"
  ;;
  Darwin:x86_64)
    LIBJPEG_TURBO_ASFLAGS="-D__x86_64__ -DPIC -DMACHO"
  ;;
  Darwin:arm*)
  ;;
  WINNT:x86)
    LIBJPEG_TURBO_ASFLAGS="-DPIC -DWIN32"
  ;;
  WINNT:x86_64)
    LIBJPEG_TURBO_ASFLAGS="-D__x86_64__ -DPIC -DWIN64 -DMSVC"
  ;;
  *:arm)
    LIBJPEG_TURBO_ASFLAGS="-march=armv7-a -mfpu=neon"
  ;;
  *:aarch64)
    LIBJPEG_TURBO_ASFLAGS="-march=armv8-a"
  ;;
  *:mips32)
    LIBJPEG_TURBO_ASFLAGS="-mdspr2"
  ;;
  *:x86)
    if $CC -E -dM -</dev/null | grep -q __ELF__; then
      LIBJPEG_TURBO_ASFLAGS="-DPIC -DELF"
    fi
  ;;
  *:x86_64)
    if $CC -E -dM -</dev/null | grep -q __ELF__; then
      LIBJPEG_TURBO_ASFLAGS="-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_USE_YASM=1

    if test -z "$YASM" ; 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
  ;;
  esac
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 "$MOZ_LIBAV_FFT" -a -n "$COMPILE_ENVIRONMENT"; 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="-D__x86_64__ -DPIC -DMACHO"
  ;;
  WINNT:x86)
    LIBAV_FFT_ASFLAGS="-DPIC -DWIN32"
  ;;
  WINNT:x86_64)
    LIBAV_FFT_ASFLAGS="-D__x86_64__ -DPIC -DWIN64 -DMSVC"
  ;;
  *:x86_64)
    if $CC -E -dM -</dev/null | grep -q __ELF__; then
      LIBAV_FFT_ASFLAGS="-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 "$LIBAV_FFT_ASFLAGS"; then
  dnl If we're on an x86 or x64 system which supports libav-fft's asm routines
  dnl check for Yasm, and error out if it doesn't exist or we have too old of a
  dnl version.
  if test -z "$YASM" ; 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 = FFmpeg's ffvpx configuration
dnl ========================================================

MOZ_FFVPX=
MOZ_FFVPX_FLACONLY=
case "$CPU_ARCH" in
  x86|x86_64)
      MOZ_FFVPX=1
      dnl Use same conditional as MOZ_LIBAV_FFT to enable FFmpeg's ffvpx assembly decoder.
      if test -n "$LIBAV_FFT_ASFLAGS"; then
          FFVPX_ASFLAGS=$LIBAV_FFT_ASFLAGS
      else
          dnl On x86 system with assembly optimizations disabled, the ffvp9 and
          dnl ffvp8 decoders give worse performance than libvpx ones. So we only
          dnl enable the FFmpeg FLAC decoder on those machines.
          MOZ_FFVPX_FLACONLY=1
      fi
  ;;
  arm*|aarch64)
      MOZ_FFVPX=1
      MOZ_FFVPX_FLACONLY=1
      dnl Use same conditional as MOZ_LIBVPX to enable FFmpeg's ffvpx assembly decoder.
      dnl aarch 64 FLAC decoder for now will be C only.
      FFVPX_ASFLAGS=$VPX_ASFLAGS
  ;;
esac

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

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

# Avoid defining MOZ_ENABLE_CAIRO_FT on Windows platforms because
# "cairo-ft-font.c" includes <dlfcn.h>, which only exists on posix platforms
if test -n "$MOZ_TREE_FREETYPE" -a "$OS_TARGET" != WINNT; then
   MOZ_ENABLE_CAIRO_FT=1
   FT_FONT_FEATURE="#define CAIRO_HAS_FT_FONT 1"
   CAIRO_FT_CFLAGS="-I$_topsrcdir/modules/freetype2/include"
   AC_SUBST_LIST(CAIRO_FT_CFLAGS)
fi

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

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 "$MOZ_ENABLE_SIGNMAR"; then
  if test -z "$COMPILE_ENVIRONMENT" ; then
    AC_MSG_WARN([Cannot --enable-signmar with --disable-compile-environment])
    MOZ_ENABLE_SIGNMAR=
  else
    AC_DEFINE(MOZ_ENABLE_SIGNMAR)
  fi
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

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 = Sandboxing support
dnl ========================================================
if test -n "$MOZ_TSAN" -o -n "$MOZ_ASAN"; then
    # Bug 1182565: TSan conflicts with sandboxing on Linux.
    # Bug 1287971: LSan also 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 ========================================================

case "$OS_TARGET" in
WINNT)
    MOZ_CONTENT_SANDBOX=$MOZ_SANDBOX
    ;;
Darwin)
    MOZ_CONTENT_SANDBOX=$MOZ_SANDBOX
    ;;
Linux)
    case $CPU_ARCH in
        x86_64|x86)
            MOZ_CONTENT_SANDBOX=$MOZ_SANDBOX
        ;;
    esac
    ;;
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_SYSTEM_SQLITE=
MOZ_ARG_ENABLE_BOOL(system-sqlite,
[  --enable-system-sqlite  Use system sqlite (located with pkgconfig)],
MOZ_SYSTEM_SQLITE=1,
MOZ_SYSTEM_SQLITE= )

if test -n "$MOZ_SYSTEM_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
else
    dnl ==============================
    dnl === SQLite fdatasync check ===
    dnl ==============================
    dnl Check to see if fdatasync is available
    AC_CHECK_FUNC(fdatasync)
fi

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

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 =
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 ========================================================

# Use value from moz.configure if one is defined. Else use our computed
# value.
if test -n "${MOZ_CONFIGURE_OPTIMIZE_FLAGS}"; then
    MOZ_OPTIMIZE_FLAGS=${MOZ_CONFIGURE_OPTIMIZE_FLAGS}
fi

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_LIST(MOZ_FRAMEPTR_FLAGS)
AC_SUBST_LIST(MOZ_OPTIMIZE_FLAGS)
AC_SUBST_LIST(MOZ_OPTIMIZE_LDFLAGS)
AC_SUBST_LIST(MOZ_PGO_OPTIMIZE_FLAGS)

dnl ========================================================
dnl = Disable treating compiler warnings as errors
dnl ========================================================
if test -z "$MOZ_ENABLE_WARNINGS_AS_ERRORS"; then
   WARNINGS_AS_ERRORS=''
fi

dnl ========================================================
dnl = Enable runtime logging
dnl ========================================================
AC_DEFINE(MOZ_LOGGING)
AC_DEFINE(FORCE_PR_LOG)

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_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

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 = Jemalloc build setup
dnl ========================================================
if test -z "$MOZ_MEMORY"; then
  case "${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
  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
  *-mingw*)
    export MOZ_NO_DEBUG_RTL=1
    ;;
  esac
fi # MOZ_MEMORY
AC_SUBST(MOZ_GLUE_IN_PROGRAM)

# 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

AC_SUBST_LIST(MOZ_GLUE_WRAP_LDFLAGS)
export MOZ_GLUE_WRAP_LDFLAGS

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

if test -n "$COMPILE_ENVIRONMENT"; then
MOZ_CONFIG_CLANG_PLUGIN
fi # COMPILE_ENVIRONMENT

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 = 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 -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 = 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=)

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

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

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

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 "$COMPILE_ENVIRONMENT"; then
if test "$GNU_CC" -a "$GNU_CXX"; then
  _DEPEND_CFLAGS='-MD -MP -MF $(MDDEPDIR)/$(@F).pp'
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
fi # COMPILE_ENVIRONMENT

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

if test -z "$MOZ_SYSTEM_ZLIB"; then
if test -n "$JS_SHARED_LIBRARY" -o -n "$MOZ_LINKER"; 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)

if test "$USE_FC_FREETYPE"; then
    if test "$COMPILE_ENVIRONMENT"; then
        dnl ========================================================
        dnl = Check for freetype2 functionality
        dnl ========================================================
        if test "$_HAVE_FREETYPE2" -a -z "$MOZ_TREE_FREETYPE"; 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"
    fi
fi

dnl ========================================================
dnl Check if we need the 32-bit Linux SSE2 error dialog
dnl ========================================================

AC_SUBST(MOZ_LINUX_32_SSE2_STARTUP_ERROR)

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

MOZ_TREE_CAIRO=1
MOZ_ARG_ENABLE_BOOL(system-cairo,
[ --enable-system-cairo  Obsolete: do not use this option],
AC_MSG_ERROR(--enable-system-cairo is not supported),
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 )

if test "$MOZ_TREE_PIXMAN"; then
    AC_DEFINE(MOZ_TREE_PIXMAN)
else
    PKG_CHECK_MODULES(MOZ_PIXMAN, pixman-1 >= 0.19.2)
fi

MOZ_CAIRO_CFLAGS="-I${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
  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

    if test "$COMPILE_ENVIRONMENT"; then

      dnl D3D10 Layers depend on D2D Surfaces.
      if test -n "$WIN32_D2D_SURFACE_FEATURE"; then
        MOZ_CHECK_HEADER(d3d10.h, MOZ_ENABLE_D3D10_LAYER=1)
      fi
    fi
    ;;
esac
if test "$USE_FC_FREETYPE"; then
    FC_FONT_FEATURE="#define CAIRO_HAS_FC_FONT 1"
fi
AC_SUBST(MOZ_ENABLE_CAIRO_FT)
AC_SUBST(MOZ_ENABLE_D2D_SURFACE)
AC_SUBST(MOZ_ENABLE_D3D10_LAYER)

AC_SUBST(PS_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)

if test "$MOZ_X11"; then
    MOZ_CAIRO_OSLIBS="$MOZ_CAIRO_OSLIBS $XLDFLAGS -lXrender"
fi

CAIRO_FEATURES_H=gfx/cairo/cairo/src/cairo-features.h

case "$MOZ_WIDGET_TOOLKIT" in
android)
    TK_CFLAGS="$MOZ_CAIRO_CFLAGS $MOZ_PIXMAN_CFLAGS"
    TK_LIBS="$MOZ_CAIRO_LIBS $MOZ_PIXMAN_LIBS"
    ;;
esac

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)

BINDGEN_SYSTEM_FLAGS="$_BINDGEN_CFLAGS $NSPR_CFLAGS $NSS_CFLAGS $MOZ_PIXMAN_CFLAGS $MOZ_CAIRO_CFLAGS"
AC_SUBST_TOML_LIST(BINDGEN_SYSTEM_FLAGS)

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 necko configuration options
dnl ========================================================

dnl
dnl option to disable necko's wifi scanner
dnl

if test "$MOZ_WIDGET_TOOLKIT"; then

  case "$OS_TARGET" in
    Darwin)
      if test -z "$MOZ_IOS"; then
	NECKO_WIFI=1
      fi
      ;;
    DragonFly|FreeBSD|WINNT)
      NECKO_WIFI=1
      ;;
    Linux)
      NECKO_WIFI=1
      NECKO_WIFI_DBUS=1
      ;;
  esac

fi

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 =
dnl = Maintainer debug option (no --enable equivalent)
dnl =
dnl ========================================================

AC_SUBST(AR)
AC_SUBST(AR_FLAGS)
AC_SUBST(AR_EXTRACT)
AC_SUBST(AS)
AC_SUBST_LIST(ASFLAGS)
AC_SUBST(AS_DASH_C_FLAG)
AC_SUBST(RC)
AC_SUBST(RCFLAGS)
AC_SUBST(WINDRES)
AC_SUBST(IMPLIB)
AC_SUBST(FILTER)
AC_SUBST(MOZ_AUTH_EXTENSION)
AC_SUBST(MOZ_PREF_EXTENSIONS)
AC_SUBST_LIST(MOZ_DEBUG_LDFLAGS)
AC_SUBST(WARNINGS_AS_ERRORS)
AC_SUBST_SET(MOZ_EXTENSIONS)
AC_SUBST(MOZ_TOOLKIT_SEARCH)
AC_SUBST(MOZ_FEEDS)

AC_SUBST(MOZ_UNIVERSALCHARDET)
AC_SUBST(ACCESSIBILITY)
AC_SUBST(MOZ_SPELLCHECK)
AC_SUBST(MOZ_ANDROID_ANR_REPORTER)
AC_SUBST(MOZ_CRASHREPORTER)
AC_SUBST(MOZ_CRASHREPORTER_INJECTOR)
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_ANDROID_APPLICATION_CLASS)
AC_SUBST(MOZ_ANDROID_BROWSER_INTENT_CLASS)
AC_SUBST(MOZ_EXCLUDE_HYPHENATION_DICTIONARIES)
AC_SUBST(ENABLE_STRIP)
AC_SUBST(PKG_SKIP_STRIP)
AC_SUBST(STRIP_FLAGS)
AC_SUBST(INCREMENTAL_LINKER)

AC_SUBST_LIST(MOZ_FIX_LINK_PATHS)

AC_SUBST(MOZ_POST_PROGRAM_COMMAND)
AC_SUBST(MOZ_LINKER_EXTRACT)

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

AC_SUBST(MOZ_ADDON_SIGNING)
if test "$MOZ_ADDON_SIGNING" = 1; then
  AC_DEFINE(MOZ_ADDON_SIGNING)
fi
AC_SUBST(MOZ_REQUIRE_SIGNING)
if test "$MOZ_REQUIRE_SIGNING" = 1; then
  AC_DEFINE(MOZ_REQUIRE_SIGNING)
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=$MOZ_APP_DISPLAYNAME
if test "$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)
# If the MOZ_MACBUNDLE_ID is defined in the configure.sh, use it
# Otherwise, use MOZ_APP_DISPLAYNAME
if test -z "$MOZ_MACBUNDLE_ID"; then
   MOZ_MACBUNDLE_ID=`echo $MOZ_APP_DISPLAYNAME | tr 'A-Z' 'a-z' | tr -d '[[:blank:]]'`
fi
MOZ_MACBUNDLE_ID=${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"
fi
MOZ_CHILD_PROCESS_BUNDLE="plugin-container.app/Contents/MacOS/"
MOZ_CHILD_PROCESS_BUNDLENAME="${MOZ_APP_DISPLAYNAME}CP"

AC_SUBST(MOZ_CHILD_PROCESS_NAME)
AC_SUBST(MOZ_CHILD_PROCESS_BUNDLE)
AC_SUBST(MOZ_CHILD_PROCESS_BUNDLENAME)

# 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_ANDROID_SHARED_ID: On Android, "android:sharedUserId" for all Android
# packages produced.
# - MOZ_ANDROID_GCM_SENDERID: On Android, the Android GCM Sender ID used.  GCM
# sender IDs are not sensitive: see, http://stackoverflow.com/a/18216063.
# - MOZ_MMA_GCM_SENDERID: This GCM Sender ID is used for MMA integration.
# - 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

if test -z "$ANDROID_PACKAGE_NAME" ; then
   # When we got rid of the Aurora channel we decided to replace the old
   # Nightly ANDROID_PACKAGE_NAME with Aurora. To make sure this is inherited
   # by all mozilla-central based branches we make this the new "default"
   # for Fennec. Non mozilla-central based branches set ANDROID_PACKAGE_NAME
   # in their mozconfig, so they will never get this. If there are ever
   # non-Fennec builds for Android, they will fall into the else block
   # and use their own default name.
   # https://bugzilla.mozilla.org/show_bug.cgi?id=1357808 has additional
   # background on this.
   if test "$MOZ_APP_NAME" = "fennec"; then
      ANDROID_PACKAGE_NAME="org.mozilla.fennec_aurora"
   else
      ANDROID_PACKAGE_NAME="org.mozilla.$MOZ_APP_NAME"
   fi
fi

# Mozilla released Firefox for Android {Release,Beta} and {Aurora,Nightly} to
# the public with specific common shared IDs and we need to keep them
# consistent forever.  The specific common values are set by per-channel
# branding; all other channels use a generic sharedID, set below.
if test -z "$MOZ_ANDROID_SHARED_ID" ; then
   MOZ_ANDROID_SHARED_ID="${ANDROID_PACKAGE_NAME}.sharedID"
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

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(MOZ_ANDROID_SHARED_ID)
AC_SUBST(MOZ_ANDROID_GCM_SENDERID)
AC_SUBST(MOZ_MMA_GCM_SENDERID)
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_PKG_SPECIAL)
AC_SUBST(MOZ_SIMPLE_PACKAGE_NAME)

if test "$MOZILLA_OFFICIAL"; then
    # Build revisions should always be present in official builds
    MOZ_INCLUDE_SOURCE_INFO=1
fi

# External builds (specifically Ubuntu) may drop the hg repo information, so we allow to
# explicitly set the repository and changeset information in.
AC_SUBST(MOZ_SOURCE_REPO)
AC_SUBST(MOZ_SOURCE_CHANGESET)
AC_SUBST(MOZ_INCLUDE_SOURCE_INFO)

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

    # Enable Telemetry by default for nightly and aurora channels
    if test -z "$RELEASE_OR_BETA"; 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(WIN32_REDIST_DIR)
AC_SUBST(WIN_UCRT_REDIST_DIR)

dnl ========================================================
dnl ICU Support
dnl ========================================================

_INTL_API=yes

if test "$MOZ_WIDGET_TOOLKIT" = "cocoa"; then
    USE_ICU=1
fi

MOZ_CONFIG_ICU()

dnl Echo the CFLAGS to remove extra whitespace.
CFLAGS=`echo \
    $_WARNINGS_CFLAGS \
    $_COMPILATION_CFLAGS \
    $CFLAGS`

CXXFLAGS=`echo \
    $_WARNINGS_CXXFLAGS \
    $_COMPILATION_CXXFLAGS \
    $CXXFLAGS`

COMPILE_CFLAGS=`echo \
    $_DEFINES_CFLAGS \
    $COMPILE_CFLAGS`

COMPILE_CXXFLAGS=`echo \
    $_DEFINES_CXXFLAGS \
    $COMPILE_CXXFLAGS`

HOST_CFLAGS=`echo \
    $_WARNINGS_HOST_CFLAGS \
    $_COMPILATION_HOST_CFLAGS \
    $HOST_CFLAGS`

HOST_CXXFLAGS=`echo \
    $_WARNINGS_HOST_CXXFLAGS \
    $_COMPILATION_HOST_CXXFLAGS \
    $HOST_CXXFLAGS`

AC_SUBST(_DEPEND_CFLAGS)
AC_SUBST(MOZ_SYSTEM_JPEG)
AC_SUBST(MOZ_SYSTEM_PNG)
AC_SUBST(MOZ_SYSTEM_BZ2)

AC_SUBST_LIST(MOZ_JPEG_CFLAGS)
AC_SUBST_LIST(MOZ_JPEG_LIBS)
AC_SUBST_LIST(MOZ_BZ2_CFLAGS)
AC_SUBST_LIST(MOZ_BZ2_LIBS)
AC_SUBST_LIST(MOZ_PNG_CFLAGS)
AC_SUBST_LIST(MOZ_PNG_LIBS)

AC_SUBST(MOZ_SYSTEM_NSPR)

AC_SUBST(MOZ_SYSTEM_NSS)

HOST_CMFLAGS="-x objective-c -fobjc-exceptions"
HOST_CMMFLAGS="-x objective-c++ -fobjc-exceptions"
OS_COMPILE_CMFLAGS="-x objective-c -fobjc-exceptions"
OS_COMPILE_CMMFLAGS="-x objective-c++ -fobjc-exceptions"
if test "$MOZ_WIDGET_TOOLKIT" = uikit; then
  OS_COMPILE_CMFLAGS="$OS_COMPILE_CMFLAGS -fobjc-abi-version=2 -fobjc-legacy-dispatch"
  OS_COMPILE_CMMFLAGS="$OS_COMPILE_CMMFLAGS -fobjc-abi-version=2 -fobjc-legacy-dispatch"
fi
AC_SUBST(HOST_CMFLAGS)
AC_SUBST(HOST_CMMFLAGS)
AC_SUBST(OS_COMPILE_CMFLAGS)
AC_SUBST(OS_COMPILE_CMMFLAGS)

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_LIST(OS_CFLAGS)
AC_SUBST_LIST(OS_CXXFLAGS)
AC_SUBST_LIST(OS_CPPFLAGS)
AC_SUBST_LIST(OS_COMPILE_CFLAGS)
AC_SUBST_LIST(OS_COMPILE_CXXFLAGS)
AC_SUBST_LIST(OS_LDFLAGS)
AC_SUBST(OS_LIBS)

AC_SUBST(HOST_CC)
AC_SUBST(HOST_CXX)
AC_SUBST_LIST(HOST_CFLAGS)
AC_SUBST_LIST(HOST_CPPFLAGS)
AC_SUBST_LIST(HOST_CXXFLAGS)
AC_SUBST(HOST_LDFLAGS)
AC_SUBST_LIST(HOST_OPTIMIZE_FLAGS)
AC_SUBST(HOST_AR)
AC_SUBST(HOST_AR_FLAGS)
AC_SUBST(HOST_RANLIB)
AC_SUBST(HOST_BIN_SUFFIX)

AC_SUBST(TARGET_XPCOM_ABI)
AC_SUBST(HAVE_TOOLCHAIN_SUPPORT_MSSSE3)
AC_SUBST(HAVE_TOOLCHAIN_SUPPORT_MSSE4_1)
AC_SUBST(HAVE_X86_AVX2)
AC_SUBST(HAVE_ALTIVEC)
AC_SUBST(GCC_USE_GNU_LD)

AC_SUBST(MKSHLIB)
AC_SUBST(MKCSHLIB)
AC_SUBST_LIST(DSO_CFLAGS)
AC_SUBST_LIST(DSO_PIC_CFLAGS)
AC_SUBST(DSO_LDOPTS)
AC_SUBST(BIN_SUFFIX)
AC_SUBST(USE_N32)
AC_SUBST(CC_VERSION)
AC_SUBST(NS_ENABLE_TSF)
AC_SUBST(WIN32_CONSOLE_EXE_LDFLAGS)
AC_SUBST(WIN32_GUI_EXE_LDFLAGS)

AC_SUBST(MOZ_VORBIS)
AC_SUBST(MOZ_TREMOR)
AC_SUBST(MOZ_FFVPX)
AC_SUBST(MOZ_FFVPX_FLACONLY)
AC_SUBST_LIST(FFVPX_ASFLAGS)
AC_SUBST(VPX_USE_YASM)
AC_SUBST_LIST(VPX_ASFLAGS)
AC_SUBST(VPX_AS_CONVERSION)
AC_SUBST(VPX_X86_ASM)
AC_SUBST(VPX_ARM_ASM)
AC_SUBST(LIBJPEG_TURBO_USE_YASM)
AC_SUBST_LIST(LIBJPEG_TURBO_ASFLAGS)
AC_SUBST(MOZ_LIBAV_FFT)
AC_SUBST_LIST(LIBAV_FFT_ASFLAGS)
AC_SUBST(MOZ_DEVTOOLS)

AC_SUBST(MOZ_PACKAGE_JSSHELL)
AC_SUBST(MOZ_FOLD_LIBS)
AC_SUBST_LIST(MOZ_FOLD_LIBS_FLAGS)

AC_SUBST(DMG_TOOL)

dnl Host JavaScript runtime, if any, to use during cross compiles.
AC_SUBST(JS_BINARY)

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 "$MOZ_X11"; then
    dnl ====================================================
    dnl = Check if X headers exist
    dnl ====================================================
    _SAVE_CFLAGS=$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 "$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

AC_SUBST(MOZ_DEV_EDITION)
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

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_DYNAMIC_CAST_TO_VOID_PTR
HAVE_GETPAGESIZE
HAVE_STATVFS64
HAVE_STATVFS
HAVE_STATFS64
HAVE_STATFS
HAVE_SYS_STATVFS_H
HAVE_SYS_STATFS_H
HAVE_SYS_VFS_H
HAVE_SYS_MOUNT_H
"

# Avoid using obsolete NSPR features
AC_DEFINE(NO_NSPR_10_SUPPORT)

# Don't build NSS libpkix
NSS_DISABLE_LIBPKIX=1
AC_SUBST(NSS_DISABLE_LIBPKIX)

MOZ_CREATE_CONFIG_STATUS()

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 "$COMPILE_ENVIRONMENT" -a "$MOZ_WIDGET_TOOLKIT"; 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=

# 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* *//'`"

if test "$_INTL_API" = no; then
    ac_configure_args="$ac_configure_args --without-intl-api"
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 -n "$ZLIB_IN_MOZGLUE"; then
   MOZ_ZLIB_LIBS=
fi
export MOZ_SYSTEM_ZLIB
export MOZ_ZLIB_CFLAGS
export MOZ_ZLIB_LIBS
export MOZ_APP_NAME
export MOZ_APP_REMOTINGNAME
export MOZ_DEV_EDITION
export RUSTC
export MOZILLA_CENTRAL_PATH=$_topsrcdir
export STLPORT_CPPFLAGS
export STLPORT_LIBS
unset MOZ_BUILD_APP
export DIST
export MOZ_LINKER
export ZLIB_IN_MOZGLUE
export AR
export RANLIB
export CPP
export CC
export CXX
export ARFLAGS
export CPPFLAGS
export CFLAGS
export CXXFLAGS
export LDFLAGS
export HOST_CC
export HOST_CXX
export HOST_CFLAGS
export HOST_CPPFLAGS
export HOST_CXXFLAGS
export HOST_LDFLAGS

if ! test -e js; then
    mkdir js
fi

ac_configure_args="$ac_configure_args JS_STANDALONE="
AC_OUTPUT_SUBDIRS(js/src,$cache_file)
ac_configure_args="$_SUBDIR_CONFIG_ARGS"

fi # COMPILE_ENVIRONMENT

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_ALL_SUBCONFIGURES()

rm -fr confdefs* $ac_clean_files