Factor out toolset definitions in a separate gypi file

build/toolchain.gypi

Index: build/toolchain.gypi
diff --git a/build/common.gypi b/build/toolchain.gypi
similarity index 88%
rename from build/common.gypi
rename to build/toolchain.gypi
index dbb33a867bfb9abd6aaeb88a542aa69b168c082d..034fbc37e095ddc063d3a1540e12a20a8c021d74 100644
--- a/build/common.gypi
+++ b/build/toolchain.gypi
@@ -1,4 +1,4 @@
-# Copyright 2012 the V8 project authors. All rights reserved.
+# Copyright 2013 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:
@@ -32,7 +32,6 @@
     '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)',
     # Native Client builds currently use the V8 ARM JIT and
     # arm/simulator-arm.cc to defer the significant effort required
@@ -42,14 +41,6 @@
     # NaCl V8 builds stop using the ARM simulator
     'nacl_target_arch%': 'none',     # must be set externally
 
-    # 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',
-
     # Setting 'v8_can_use_vfp32dregs' to 'true' will cause V8 to use the VFP
     # registers d16-d31 in the generated code, both in the snapshot and for the
     # ARM target. Leaving the default value of 'false' will avoid the use of
@@ -67,21 +58,10 @@
     # Default arch variant for MIPS.
     'mips_arch_variant%': 'mips32r2',
 
-    'v8_enable_debugger_support%': 1,
-
     'v8_enable_backtrace%': 0,
-
-    'v8_enable_disassembler%': 0,
-
-    'v8_enable_gdbjit%': 0,
-
-    'v8_object_print%': 0,
-
     # Enable profiling support. Only required on Windows.
     'v8_enable_prof%': 0,
 
-    'v8_enable_verify_heap%': 0,
-
     # Some versions of GCC 4.5 seem to need -fno-strict-aliasing.
     'v8_no_strict_aliasing%': 0,
 
@@ -89,49 +69,13 @@
     # it's handled in build/standalone.gypi.
     'want_separate_host_toolset%': 1,
 
-    'v8_use_snapshot%': 'true',
     'host_os%': '<(OS)',
     'werror%': '-Werror',
-
-    # With post mortem support enabled, metadata is embedded into libv8 that
-    # describes various parameters of the VM for use by debuggers. See
-    # tools/gen-postmortem-metadata.py for details.
-    'v8_postmortem_support%': 'false',
-
     # For a shared library build, results in "libv8-<(soname_version).so".
     'soname_version%': '',
-
-    # Interpreted regexp engine exists as platform-independent alternative
-    # based where the regular expression is compiled to a bytecode.
-    'v8_interpreted_regexp%': 0,
-
-    # Enable ECMAScript Internationalization API. Enabling this feature will
-    # add a dependency on the ICU library.
-    'v8_enable_i18n_support%': 0,
   },
   'target_defaults': {
     'conditions': [
-      ['v8_enable_debugger_support==1', {
-        'defines': ['ENABLE_DEBUGGER_SUPPORT',],
-      }],
-      ['v8_enable_disassembler==1', {
-        'defines': ['ENABLE_DISASSEMBLER',],
-      }],
-      ['v8_enable_gdbjit==1', {
-        'defines': ['ENABLE_GDB_JIT_INTERFACE',],
-      }],
-      ['v8_object_print==1', {
-        'defines': ['OBJECT_PRINT',],
-      }],
-      ['v8_enable_verify_heap==1', {
-        'defines': ['VERIFY_HEAP',],
-      }],
-      ['v8_interpreted_regexp==1', {
-        'defines': ['V8_INTERPRETED_REGEXP',],
-      }],
-      ['v8_enable_i18n_support==1', {
-        'defines': ['V8_I18N_SUPPORT',],
-      }],
       ['v8_target_arch=="arm"', {
         'defines': [
           'V8_TARGET_ARCH_ARM',
@@ -391,11 +335,6 @@
         },
         'msvs_configuration_platform': 'x64',
       }],  # v8_target_arch=="x64"
-      ['v8_compress_startup_data=="bz2"', {
-        'defines': [
-          'COMPRESS_STARTUP_DATA_BZ2',
-        ],
-      }],
       ['OS=="win"', {
         'defines': [
           'WIN32',
@@ -488,9 +427,6 @@
     ],  # conditions
     'configurations': {
       'Debug': {
-        'variables': {
-          'v8_enable_extra_checks%': 1,
-        },
         'defines': [
           'DEBUG',
           'ENABLE_DISASSEMBLER',
@@ -515,9 +451,6 @@
           },
         },
         'conditions': [
-          ['v8_enable_extra_checks==1', {
-            'defines': ['ENABLE_EXTRA_CHECKS',],
-          }],
           ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="netbsd"', {
             'cflags': [ '-Wall', '<(werror)', '-W', '-Wno-unused-parameter',
                         '-Wnon-virtual-dtor', '-Woverloaded-virtual' ],
@@ -548,13 +481,7 @@
         ],
       },  # Debug
       'Release': {
-        'variables': {
-          'v8_enable_extra_checks%': 0,
-        },
         'conditions': [
-          ['v8_enable_extra_checks==1', {
-            'defines': ['ENABLE_EXTRA_CHECKS',],
-          }],
           ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="netbsd"', {
             'cflags!': [
               '-O2',