[MIPS] Support to build libchromeview for MIPS-Android

build/common.gypi

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 923 matching lines @@
     # Set to 1 to link against gsettings APIs instead of using dlopen().
     'linux_link_gsettings%': 0,
 
     # Set Thumb compilation flags.
     'arm_thumb%': 0,
 
     # Set ARM fpu compilation flags (only meaningful if armv7==1 and
     # arm_neon==0).
     'arm_fpu%': 'vfpv3',
 
+    # Default arch variant for MIPS.
+    'mips_arch_variant%': 'mips32r2',
+
     # Set ARM float abi compilation flag.
     'arm_float_abi%': 'softfp',
 
     # Enable use of OpenMAX DL FFT routines.
     'use_openmax_dl_fft%': '<(use_openmax_dl_fft)',
 
     # Enable new NPDevice API.
     'enable_new_npdevice_api%': 0,
 
     # Enable EGLImage support in OpenMAX
@@ skipping 231 matching lines @@
                 ['armv7==0', {
                   'android_app_abi%': 'armeabi',
                 }, {
                   'android_app_abi%': 'armeabi-v7a',
                 }],
               ],
               'android_gdbserver%': '<(android_ndk_root)/prebuilt/android-arm/gdbserver/gdbserver',
               'android_ndk_sysroot%': '<(android_ndk_root)/platforms/android-14/arch-arm',
               'android_toolchain%': '<(android_ndk_root)/toolchains/arm-linux-androideabi-4.6/prebuilt/<(host_os)-<(android_host_arch)/bin',
             }],
+            ['target_arch == "mipsel"', {
+              'android_app_abi%': 'mips',
+              'android_gdbserver%': '<(android_ndk_root)/prebuilt/android-mips/gdbserver/gdbserver',
+              'android_ndk_sysroot%': '<(android_ndk_root)/platforms/android-9/arch-mips',

[cjhopman, 2013/04/19 18:02:10]

should this be android-14 like arm/x86?

[petarj, 2013/04/21 01:17:14]

Done.

+              'android_toolchain%': '<(android_ndk_root)/toolchains/mipsel-linux-android-4.6/prebuilt/<(host_os)-x86/bin',

[cjhopman, 2013/04/19 18:02:10]

"<(host_os)-<(android_host_arch)" instead of "<(host_os)-x86"?

[petarj, 2013/04/21 01:17:14]

We must force "linux-x86" for both "x86_64" and "x86" for the time being.
See the comment in envsetup_functions.sh.

+            }],
           ],
         },
         # Copy conditionally-set variables out one scope.
         'android_app_abi%': '<(android_app_abi)',
         'android_gdbserver%': '<(android_gdbserver)',
         'android_ndk_root%': '<(android_ndk_root)',
         'android_ndk_sysroot': '<(android_ndk_sysroot)',
         'android_sdk_root%': '<(android_sdk_root)',
         'android_sdk_version%': '<(android_sdk_version)',
         'android_toolchain%': '<(android_toolchain)',
@@ skipping 1415 matching lines @@
                 'ldflags': [
                   '-Wl,-O1',
                   '-Wl,--as-needed',
                 ],
               }],
               ['OS=="linux" and target_arch=="ia32"', {
                 'ldflags': [
                   '-Wl,--no-as-needed',
                 ],
               }],
+              ['target_arch == "mipsel"', {
+                'android_app_abi%': 'mips',
+                'android_ndk_sysroot%': '<(android_ndk_root)/platforms/android-9/arch-mips',

[cjhopman, 2013/04/19 18:02:10]

These shouldn't need to be set here. It should just use the ones above.

[petarj, 2013/04/21 01:17:14]

Removed.

+              }],
             ],
           },
           'Release_Base': {
             'variables': {
               'release_optimize%': '2',
               # Binaries become big and gold is unable to perform GC
               # and remove unused sections for some of test targets
               # on 32 bit platform.
               # (This is currently observed only in chromeos valgrind bots)
               # The following flag is to disable --gc-sections linker
@@ skipping 258 matching lines @@
                       # http://code.google.com/p/android/issues/detail?id=40303
                       ['_type=="static_library"', {
                         'standalone_static_library': 1,
                       }],
                     ],
                   }],
                 ],
               }],
             ],
           }],
+          ['target_arch=="mipsel"', {
+            'target_conditions': [
+              ['_toolset=="target"', {
+                'conditions': [
+                  ['mips_arch_variant=="mips32r2"', {
+                    'cflags': ['-mips32r2', '-Wa,-mips32r2'],
+                  }, {
+                    'cflags': ['-mips32', '-Wa,-mips32'],
+                  }],
+                ],
+                'cflags': [
+                  '-EL',
+                  '-mhard-float',
+                ],
+                'ldflags': [
+                  '-EL',
+                  '-Wl,--no-keep-memory'
+                ],
+                'cflags_cc': [
+                  '-Wno-uninitialized',
+                ],
+              }],
+            ],
+          }],
           ['linux_fpic==1', {
             'cflags': [
               '-fPIC',
             ],
             'ldflags': [
               '-fPIC',
             ],
           }],
           ['sysroot!=""', {
             'target_conditions': [
@@ skipping 381 matching lines @@
                 'conditions': [
                   ['target_arch=="arm"', {
                     'cflags': [
                       '-target arm-linux-androideabi',
                       '-mllvm -arm-enable-ehabi',
                     ],
                     'ldflags': [
                       '-target arm-linux-androideabi',
                     ],
                   }],
+                  ['target_arch=="mipsel"', {
+                    'ldflags': [
+                      '-L<(android_ndk_root)/sources/cxx-stl/stlport/libs/mips',
+                      '-L<(android_ndk_root)/sources/cxx-stl/gnu-libstdc++/4.6/libs/mips'

[cjhopman, 2013/04/19 18:02:10]

should this use the "-target" flag like arm/x86?

Note: I don't know what exactly it does, I just noticed the inconsistency.

[petarj, 2013/04/21 01:17:14]

Removed completely for now.

+                    ],
+                  }],
                   ['target_arch=="ia32"', {
                     'cflags': [
                       '-target x86-linux-androideabi',
                     ],
                     'ldflags': [
                       '-target x86-linux-androideabi',
                     ],
                   }],
                 ],
               }],
@@ skipping 935 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }