[MIPS] Support to build libchromeview for MIPS-Android

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index 8b7337c1ef4d31d11a58858d59996e0924d8cbb6..44551c60922e42e64ea7fb705959f6bf238ffbe3 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -941,6 +941,9 @@
     # 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',
 
@@ -1192,6 +1195,12 @@
               '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.
@@ -2627,6 +2636,10 @@
                   '-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': {
@@ -2905,6 +2918,30 @@
               }],
             ],
           }],
+          ['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',
@@ -3306,6 +3343,12 @@
                       '-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',