[MIPS] Set defaults for mips/linux chrome builds.

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 596 matching lines @@
         ['OS=="linux" and target_arch=="arm" and chromeos==0', {
           # Set some defaults for arm/linux chrome builds
           'armv7%': 1,
           'linux_breakpad%': 0,
           'linux_use_tcmalloc%': 0,
           'linux_use_gold_flags%': 0,
           # sysroot needs to be an absolute path otherwise it generates
           # incorrect results when passed to pkg-config
           'sysroot%': '<!(cd <(DEPTH) && pwd -P)/arm-sysroot',
         }], # OS=="linux" and target_arch=="arm" and chromeos==0
+
+        ['target_arch=="mipsel"', {
+          'sysroot': '<!(cd <(DEPTH) && pwd -P)/native_client/toolchain/linux_mips-trusted/sysroot',
+        }], # target_arch=="mipsel"

[tony, 2013/01/31 01:13:09]

Nit: I would remove the comment here.  I'm not sure why there's a similar
comment on line 616.

[petarj, 2013/01/31 01:19:23]

Done.

       ],
 
       # Set this to 1 to use the Google-internal file containing
       # official API keys for Google Chrome even in a developer build.
       # Setting this variable explicitly to 1 will cause your build to
       # fail if the internal file is missing.
       #
       # Set this to 0 to not use the internal file, even when it
       # exists in your checkout.
       #
@@ skipping 397 matching lines @@
         'conditions': [
           # TODO(glider): set clang to 1 earlier for ASan and TSan builds so
           # that it takes effect here.
           ['clang==0 and asan==0 and tsan==0', {
             # This will set gcc_version to XY if you are running gcc X.Y.*.
             # This is used to tweak build flags for gcc 4.5.
             'gcc_version%': '<!(python <(DEPTH)/build/compiler_version.py)',
           }, {
             'gcc_version%': 0,
           }],
+          ['target_arch=="mipsel"', {
+            # Set some defaults for mips/linux chrome builds

[tony, 2013/01/31 01:13:09]

I would remove this comment too.  I don't see anything like this in the other
sections (e.g., in the ios section).

[petarj, 2013/01/31 01:19:23]

Done.

+            'werror%': '',
+            'disable_nacl%': 1,
+            'linux_use_gold_binary%': 0,
+            'linux_use_gold_flags%': 0,
+            'nacl_untrusted_build%': 0,
+            'linux_use_tcmalloc%': 0,
+            'linux_breakpad%': 0,
+            'sysroot%': '<(sysroot)',
+          }],
           # All Chrome builds have breakpad symbols, but only process the
           # symbols from official builds.
           ['(branding=="Chrome" and buildtype=="Official")', {
             'linux_dump_symbols%': 1,
           }],
         ],
       }],  # os_posix==1 and OS!="mac" and OS!="ios"
       ['OS=="ios"', {
         'disable_nacl%': 1,
         'enable_background%': 0,
@@ skipping 245 matching lines @@
           'NACL_WIN64',
         ],
       }],
 
       ['os_posix==1 and chromeos==0 and OS!="android" and OS!="ios"', {
         'use_cups%': 1,
       }, {
         'use_cups%': 0,
       }],
 
-      # Native Client glibc toolchain is enabled by default except on arm.
-      ['target_arch=="arm"', {
+      # Native Client glibc toolchain is enabled
+      # by default except on arm and mips.
+      ['target_arch=="arm" or target_arch=="mipsel"', {
         'disable_glibc%': 1,
       }, {
         'disable_glibc%': 0,
       }],
 
       # Disable SSE2 when building for ARM or MIPS.
       ['target_arch=="arm" or target_arch=="mipsel"', {
         'disable_sse2%': 1,
       }, {
         'disable_sse2%': '<(disable_sse2)',
@@ skipping 2619 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 ${ANDROID_GOMA_WRAPPER} <!(which g++))'],
       ],
     }],
+    ['target_arch=="mipsel"', {
+      'make_global_settings': [
+        ['CC', '<(sysroot)/../bin/mipsel-linux-gnu-gcc'],
+        ['CXX', '<(sysroot)/../bin/mipsel-linux-gnu-g++'],
+        ['LINK', '$(CXX)'],
+        ['CC.host', '<!(which gcc)'],
+        ['CXX.host', '<!(which g++)'],
+        ['LINK.host', '<!(which g++)'],
+      ],
+    }],
   ],
   'xcode_settings': {
     # DON'T ADD ANYTHING NEW TO THIS BLOCK UNLESS YOU REALLY REALLY NEED IT!
     # This block adds *project-wide* configuration settings to each project
     # file.  It's almost always wrong to put things here.  Specify your
     # custom xcode_settings in target_defaults to add them to targets instead.
 
     'conditions': [
       # In an Xcode Project Info window, the "Base SDK for All Configurations"
       # setting sets the SDK on a project-wide basis. In order to get the
@@ skipping 39 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',
   },
 }