Linux: Autodetect and change build flags when using gcc 4.4.

build/common.gypi

 # Copyright (c) 2009 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': {
     # .gyp files should set chromium_code to 1 if they build Chromium-specific
@@ skipping 164 matching lines @@
 
     # Used to disable Native Client at compile time, for platforms where it
     # isn't supported
     'disable_nacl%': 0,
 
     # Set ARM-v7 compilation flags
     'armv7%': 0,
 
     'conditions': [
       ['OS=="linux"', {
+        # This will set gcc_version to XY if you are running gcc X.Y.*.
+        # This is used to tweak build flags for gcc 4.4.
+        'gcc_version%': '<!(python <(DEPTH)/build/compiler_version.py)',
         'conditions': [
           ['branding=="Chrome" or linux_chromium_breakpad==1', {
             'linux_breakpad%': 1,
           }, {
             'linux_breakpad%': 0,
           }],
           # All Chrome builds have breakpad symbols, but only process the
           # symbols from official builds.
           # TODO(mmoss) dump_syms segfaults on x64. Enable once dump_syms and
           # crash server handle 64-bit symbols.
@@ skipping 737 matching lines @@
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: