MIPS: Fix mips gyp build for chromium.

build/common.gypi

 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 14 matching lines @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 # Shared definitions for all V8-related targets.
 
 {
   'variables': {
     'use_system_v8%': 0,
     'msvs_use_common_release': 0,
     'gcc_version%': 'unknown',
+    'CXX%': '${CXX:-$(which g++)}',  # Used to assemble a shell command.
     'v8_compress_startup_data%': 'off',
     'v8_target_arch%': '<(target_arch)',
 
     # Setting 'v8_can_use_unaligned_accesses' to 'true' will allow the code
     # generated by V8 to do unaligned memory access, and setting it to 'false'
     # will ensure that the generated code will always do aligned memory
     # accesses. The default value of 'default' will try to determine the correct
     # setting. Note that for Intel architectures (ia32 and x64) unaligned memory
     # access is allowed for all CPUs.
     'v8_can_use_unaligned_accesses%': 'default',
@@ skipping 150 matching lines @@
       ['v8_target_arch=="ia32"', {
         'defines': [
           'V8_TARGET_ARCH_IA32',
         ],
       }],  # v8_target_arch=="ia32"
       ['v8_target_arch=="mipsel"', {
         'defines': [
           'V8_TARGET_ARCH_MIPS',
         ],
         'variables': {
-          'mipscompiler': '<!($(echo ${CXX:-$(which g++)}) -v 2>&1 | grep -q "^Target: mips" && echo "yes" || echo "no")',
+          'mipscompiler': '<!($(echo <(CXX)) -v 2>&1 | grep -q "^Target: mips" && echo "yes" || echo "no")',
         },
         'conditions': [
           ['mipscompiler=="yes"', {
             'target_conditions': [
               ['_toolset=="target"', {
                 'cflags': ['-EL'],
                 'ldflags': ['-EL'],
                 'conditions': [
                   [ 'v8_use_mips_abi_hardfloat=="true"', {
                     'cflags': ['-mhard-float'],
@@ skipping 97 matching lines @@
               'm32flag': '<!((echo | $(echo ${CXX_host:-$(which g++)}) -m32 -E - > /dev/null 2>&1) && echo "-m32" || true)',
             },
             'cflags': [ '<(m32flag)' ],
             'ldflags': [ '<(m32flag)' ],
             'xcode_settings': {
               'ARCHS': [ 'i386' ],
             },
           }],
           ['_toolset=="target"', {
             'variables': {
-              'm32flag': '<!((echo | $(echo ${CXX_target:-${CXX:-$(which g++)}}) -m32 -E - > /dev/null 2>&1) && echo "-m32" || true)',
+              'm32flag': '<!((echo | $(echo ${CXX_target:-<(CXX)}) -m32 -E - > /dev/null 2>&1) && echo "-m32" || true)',
               'clang%': 0,
             },
             'conditions': [
               ['OS!="android" or clang==1', {
                 'cflags': [ '<(m32flag)' ],
                 'ldflags': [ '<(m32flag)' ],
               }],
             ],
             'xcode_settings': {
               'ARCHS': [ 'i386' ],
@@ skipping 133 matching lines @@
                 'OptimizeReferences': '2',
                 'EnableCOMDATFolding': '2',
               },
             },
           }],  # OS=="win"
         ],  # conditions
       },  # Release
     },  # configurations
   },  # target_defaults
 }