Set defaults for building chrome for linux/arm.

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 565 matching lines @@
           # where possible to reduce ROM size.
           'use_system_libjpeg%': '<(android_build_type)',
         }],
 
         # Enable Settings App only on Windows.
         ['enable_app_list==1 and OS=="win"', {
           'enable_settings_app%': 1,
         }, {
           'enable_settings_app%': 0,
         }],
+
+        ['OS=="linux"', { # and target_arch=="arm" and chromeos==0', {

[iannucci, 2012/12/07 23:54:06]

I'm not sure I'm reading this right, but it looks like this is really just
'OS=="linux"' with a comment after it?

[Sam Clegg, 2012/12/08 00:03:12]

Great catch. Thank you.

Done.

Do you happen to know if chromos builds with OS=linux and chromeos=1?

+          # Set some defaults for arm/linux chrome builds
+          'armv7%': 1,
+          'linux_breakpad%': 0,
+          'linux_use_tcmalloc%': 0,
+          'sysroot%': '<!(cd <(DEPTH)/arm-sysroot && pwd -P)',
+        }], # OS=="linux" and target_arch=="arm"
       ],
 
       # 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 611 matching lines @@
             # Enable Keystone auto-update support.
             'mac_keystone%': 1,
           }, { # else: branding!="Chrome" or buildtype!="Official"
             'mac_sdk%': '<!(python <(DEPTH)/build/mac/find_sdk.py <(mac_sdk_min))',
             'mac_breakpad_uploads%': 0,
             'mac_breakpad%': 0,
             'mac_keystone%': 0,
           }],
         ],
       }],  # OS=="mac"
-
       ['OS=="win"', {
         'conditions': [
           ['component=="shared_library"', {
             'win_use_allocator_shim%': 0,
           }],
           ['component=="shared_library" and "<(GENERATOR)"=="ninja"', {
             # Only enabled by default for ninja because it's buggy in VS.
             # Not enabled for component=static_library because some targets
             # are too large and the toolchain fails due to the size of the
             # .obj files.
@@ skipping 1568 matching lines @@
               # Allow mmx intrinsics to inline, so that the compiler can expand
               # the intrinsics.
               '-finstrument-functions-exclude-file-list=mmintrin.h',
             ],
           }],
           ['linux_use_gold_flags==1', {
             'conditions': [
               # Don't enable multi-threaded linking for 32-bit targets as it
               # causes intermittent crashed on lucid32: http://crbug.com/161942
               # TODO(sbc): remove this once gold bug is fixed
-              ['host_arch!="ia32"', {
+              ['host_arch!="ia32" and host_arch!="arm"', {
                 'ldflags': [
                   # Experimentation found that using four linking threads
                   # saved ~20% of link time.
                   # https://groups.google.com/a/chromium.org/group/chromium-dev/browse_thread/thread/281527606915bb36
                   '-Wl,--threads',
                   '-Wl,--thread-count=4',
                 ],
               }],
               ['release_valgrind_build==0', {
                 'target_conditions': [
@@ skipping 1098 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',
   },
 }