Bug 1425381 - Always enable PIE on Android now that we support only >= 4.1. r=froydnj

--HG--
extra : rebase_source : c73d77ab1274b2dd54a3785a6d77c6e8dcb69f87

Author: glandium

build/autoconf/compiler-opts.m4

@@ -198,10 +198,14 @@ if test "$GNU_CC" -a "$GCC_USE_GNU_LD" -a -z "$DEVELOPER_OPTIONS"; then
     fi
 fi
 
-# bionic in Android < 4.1 doesn't support PIE
 # On OSX, the linker defaults to building PIE programs when targeting OSX 10.7.
 # On other Unix systems, some file managers (Nautilus) can't start PIE programs
-MOZ_PIE=
+if test "$OS_TARGET" = Android; then
+    # bionic in Android >= 4.1 supports PIE, and we target those versions.
+    MOZ_PIE=1
+else
+    MOZ_PIE=
+fi
 
 MOZ_ARG_ENABLE_BOOL(pie,
 [  --enable-pie           Enable Position Independent Executables],

ipc/app/moz.build

@@ -4,15 +4,11 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-# Any changes that affect Android need to be made in pie/moz.build as well.
-
 if CONFIG['MOZ_WIDGET_TOOLKIT'] == 'android':
     Program(CONFIG['MOZ_CHILD_PROCESS_NAME'])
     SOURCES += [
         'MozillaRuntimeMainAndroid.cpp',
     ]
-
-    DIRS += ['pie']
 else:
     GeckoProgram(CONFIG['MOZ_CHILD_PROCESS_NAME'], linkage='dependent')
 

ipc/app/pie/moz.build

@@ -219,8 +219,8 @@ include('/ipc/chromium/chromium-config.mozbuild')
 
 FINAL_LIBRARY = 'xul'
 
-for var in ('MOZ_CHILD_PROCESS_NAME', 'MOZ_CHILD_PROCESS_NAME_PIE',
-            'MOZ_CHILD_PROCESS_BUNDLE', 'DLL_PREFIX', 'DLL_SUFFIX'):
+for var in ('MOZ_CHILD_PROCESS_NAME', 'MOZ_CHILD_PROCESS_BUNDLE',
+            'DLL_PREFIX', 'DLL_SUFFIX'):
     DEFINES[var] = '"%s"' % CONFIG[var]
 
 if CONFIG['MOZ_SANDBOX'] and CONFIG['OS_ARCH'] == 'WINNT':

ipc/glue/moz.build

@@ -50,9 +50,6 @@ if CONFIG['OS_ARCH'] == 'WINNT':
         'xul.dll',
     ]
 
-if CONFIG['OS_TARGET'] == 'Android':
-    LDFLAGS += ['-pie']
-
 CFLAGS += CONFIG['TK_CFLAGS']
 CXXFLAGS += CONFIG['TK_CFLAGS']
 OS_LIBS += CONFIG['TK_LIBS']

js/xpconnect/shell/moz.build

@@ -27,7 +27,6 @@ DEFINES += \
   -DPREF_DIR=$(PREF_DIR) \
   -DJAREXT= \
   -DMOZ_CHILD_PROCESS_NAME=$(MOZ_CHILD_PROCESS_NAME) \
-  -DMOZ_CHILD_PROCESS_NAME_PIE=$(MOZ_CHILD_PROCESS_NAME_PIE) \
   -DANDROID_CPU_ARCH=$(ANDROID_CPU_ARCH) \
   $(NULL)
 

mobile/android/installer/Makefile.in

@@ -74,7 +74,6 @@
 @BINPATH@/@DLL_PREFIX@mozglue@DLL_SUFFIX@
 # This should be MOZ_CHILD_PROCESS_NAME, but that has a "lib/" prefix.
 @BINPATH@/@MOZ_CHILD_PROCESS_NAME@
-@BINPATH@/@MOZ_CHILD_PROCESS_NAME_PIE@
 
 #ifdef MOZ_ANDROID_GOOGLE_VR
 @BINPATH@/@DLL_PREFIX@gvr@DLL_SUFFIX@

mobile/android/installer/package-manifest.in

@@ -4431,8 +4431,6 @@ else
   # because the unpacked file will be under the lib/ subdirectory and will
   # need to be executed from that path.
   MOZ_CHILD_PROCESS_NAME="libplugin-container.so"
-  MOZ_CHILD_PROCESS_NAME_PIE="libplugin-container-pie.so"
-  AC_SUBST(MOZ_CHILD_PROCESS_NAME_PIE)
 fi
 MOZ_CHILD_PROCESS_BUNDLE="plugin-container.app/Contents/MacOS/"
 MOZ_CHILD_PROCESS_BUNDLENAME="${MOZ_APP_DISPLAYNAME}CP"