[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 938 matching lines @@
 
     # Disable shadow stack keeping used by heapcheck to unwind the stacks
     # better.
     'linux_keep_shadow_stacks%': 0,
 
     # Set to 1 to link against libgnome-keyring instead of using dlopen().
     'linux_link_gnome_keyring%': 0,
     # Set to 1 to link against gsettings APIs instead of using dlopen().
     'linux_link_gsettings%': 0,
 
+    # Default arch variant for MIPS.
+    'mips_arch_variant%': 'mips32r2',
+
     # 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
     'enable_eglimage%': 1,
 
     # Enable a variable used elsewhere throughout the GYP files to determine
@@ skipping 227 matching lines @@
                 ['arm_version<7', {
                   '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-14/arch-mips',
+              'android_toolchain%': '<(android_ndk_root)/toolchains/mipsel-linux-android-4.6/prebuilt/<(host_os)-x86/bin',
+            }],
           ],
         },
         # 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 1728 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 1291 matching lines @@
       # it won't depend on the environment at make time.
       'make_global_settings': [
         ['CC', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} <(android_toolchain)/*-gcc)'],
         ['CXX', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} <(android_toolchain)/*-g++)'],
         ['LINK', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} <(android_toolchain)/*-gcc)'],
         ['CC.host', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} <!(which gcc))'],
         ['CXX.host', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} <!(which g++))'],
         ['LINK.host', '<!(/bin/echo -n ${ANDROID_GOMA_WRAPPER} <!(which g++))'],
       ],
     }],
-    ['target_arch=="mipsel"', {
+    ['OS=="linux" and target_arch=="mipsel"', {
       'make_global_settings': [
         ['CC', '<(sysroot)/../bin/mipsel-linux-gnu-gcc'],
         ['CXX', '<(sysroot)/../bin/mipsel-linux-gnu-g++'],
         ['LINK', '$(CXX)'],
         ['CC.host', '<!(which gcc)'],
         ['CXX.host', '<!(which g++)'],
         ['LINK.host', '<!(which g++)'],
       ],
     }],
   ],
@@ skipping 48 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',
   },
 }