Build V8 for Android IA

build/android.gypi

 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 17 matching lines @@
 # Definitions for building standalone V8 binaries to run on Android.
 # This is mostly excerpted from:
 # http://src.chromium.org/viewvc/chrome/trunk/src/build/common.gypi
 
 {
   'variables': {
     # Location of Android NDK.
     'variables': {
       'variables': {
         'android_ndk_root%': '<!(/bin/echo -n $ANDROID_NDK_ROOT)',
-        'android_target_arch%': 'arm',  # target_arch in android terms.
 
         # Switch between different build types, currently only '0' is
         # supported.
         'android_build_type%': 0,
       },
       'android_ndk_root%': '<(android_ndk_root)',
       'android_ndk_sysroot': '<(android_ndk_root)/platforms/android-9/arch-<(android_target_arch)',
       'android_build_type%': '<(android_build_type)',
     },
     'android_ndk_root%': '<(android_ndk_root)',
     'android_ndk_sysroot': '<(android_ndk_sysroot)',
     'android_ndk_include': '<(android_ndk_sysroot)/usr/include',
     'android_ndk_lib': '<(android_ndk_sysroot)/usr/lib',
     # Enable to use the system stlport, otherwise statically
     # link the NDK one?
     'use_system_stlport%': '<(android_build_type)',
     'android_stlport_library': 'stlport_static',
     # Copy it out one scope.
     'android_build_type%': '<(android_build_type)',
 
     'OS': 'android',
-    'target_arch': 'arm',
-    'v8_target_arch': 'arm',
-    'armv7': 1,
-    'arm_neon': 0,
-    'arm_fpu': 'vfpv3',
   },  # variables
   'target_defaults': {
     'defines': [
       'ANDROID',
       'V8_ANDROID_LOG_STDOUT',
     ],
     'configurations': {
       'Release': {
         'cflags!': [
           '-O2',
@@ skipping 19 matching lines @@
           '-ffunction-sections',
           '-funwind-tables',
           '-fstack-protector',
           '-fno-short-enums',
           '-finline-limit=64',
           '-Wa,--noexecstack',
           '-Wno-error=non-virtual-dtor',  # TODO(michaelbai): Fix warnings.
           # Note: This include is in cflags to ensure that it comes after
           # all of the includes.
           '-I<(android_ndk_include)',
-          '-march=armv7-a',
-          '-mtune=cortex-a8',
-          '-mfpu=vfp3',
         ],
         'defines': [
           'ANDROID',
           #'__GNU_SOURCE=1',  # Necessary for clone()
           'USE_STLPORT=1',
           '_STLP_USE_PTR_SPECIALIZATIONS=1',
           'HAVE_OFF64_T',
           'HAVE_SYS_UIO_H',
           'ANDROID_BINSIZE_HACK', # Enable temporary hacks to reduce binsize.
         ],
         'ldflags!': [
           '-pthread',  # Not supported by Android toolchain.
         ],
         'ldflags': [
           '-nostdlib',
           '-Wl,--no-undefined',
-          '-Wl,--icf=safe',  # Enable identical code folding to reduce size
           # Don't export symbols from statically linked libraries.
           '-Wl,--exclude-libs=ALL',
         ],
         'libraries!': [
             '-lrt',  # librt is built into Bionic.
             # Not supported by Android toolchain.
             # Where do these come from?  Can't find references in
             # any Chromium gyp or gypi file.  Maybe they come from
             # gyp itself?
             '-lpthread', '-lnss3', '-lnssutil3', '-lsmime3', '-lplds4', '-lplc4', '-lnspr4',
           ],
           'libraries': [
             '-l<(android_stlport_library)',
             # Manually link the libgcc.a that the cross compiler uses.
             '<!($CC -print-libgcc-file-name)',
             '-lc',
             '-ldl',
             '-lstdc++',
             '-lm',
         ],
         'conditions': [
           ['android_build_type==0', {
             'ldflags': [
               '-Wl,-rpath-link=<(android_ndk_lib)',
               '-L<(android_ndk_lib)',
             ],
           }],
+          ['target_arch == "arm"', {
+            'ldflags': [
+              # Enable identical code folding to reduce size.
+              '-Wl,--icf=safe',
+            ],
+          }],
+          ['target_arch=="arm" and armv7==1', {
+            'cflags': [
+              '-march=armv7-a',
+              '-mtune=cortex-a8',
+              '-mfpu=vfp3',
+            ],
+          }],
           # NOTE: The stlport header include paths below are specified in
           # cflags rather than include_dirs because they need to come
           # after include_dirs. Think of them like system headers, but
           # don't use '-isystem' because the arm-linux-androideabi-4.4.3
           # toolchain (circa Gingerbread) will exhibit strange errors.
           # The include ordering here is important; change with caution.
           ['use_system_stlport==0', {
             'cflags': [
               '-I<(android_ndk_root)/sources/cxx-stl/stlport/stlport',
             ],
@@ skipping 55 matching lines @@
         'ldflags!': [
           '-Wl,-z,noexecstack',
           '-Wl,--gc-sections',
           '-Wl,-O1',
           '-Wl,--as-needed',
         ],
       }],
     ],  # target_conditions
   },  # target_defaults
 }