Make MACOSX_DEPLOYMENT_TARGET configurable.

build/standalone.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 15 matching lines @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 # Definitions to be used when building stand-alone V8 binaries.
 
 {
   'variables': {
     'library%': 'static_library',
     'component%': 'static_library',
     'visibility%': 'hidden',
     'msvs_multi_core_compile%': '1',
+    'mac_deployment_target%': '10.5',

[Jakob Kummerow, 2012/07/02 14:54:52]

The bump to 10.5 is intentional. We follow Chromium here.

     'variables': {
       'variables': {
         'variables': {
           'conditions': [
             ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or \
                OS=="netbsd" or OS=="mac"', {
               # This handles the Unix platforms we generally deal with.
               # Anything else gets passed through, which probably won't work
               # very well; such hosts should pass an explicit target_arch
               # to gyp.
@@ skipping 138 matching lines @@
           'GCC_ENABLE_CPP_EXCEPTIONS': 'NO',        # -fno-exceptions
           'GCC_ENABLE_CPP_RTTI': 'NO',              # -fno-rtti
           'GCC_ENABLE_PASCAL_STRINGS': 'NO',        # No -mpascal-strings
           # GCC_INLINES_ARE_PRIVATE_EXTERN maps to -fvisibility-inlines-hidden
           'GCC_INLINES_ARE_PRIVATE_EXTERN': 'YES',
           'GCC_SYMBOLS_PRIVATE_EXTERN': 'YES',      # -fvisibility=hidden
           'GCC_THREADSAFE_STATICS': 'NO',           # -fno-threadsafe-statics
           'GCC_TREAT_WARNINGS_AS_ERRORS': 'YES',    # -Werror
           'GCC_VERSION': '4.2',
           'GCC_WARN_ABOUT_MISSING_NEWLINE': 'YES',  # -Wnewline-eof
-          'MACOSX_DEPLOYMENT_TARGET': '10.4',       # -mmacosx-version-min=10.4
+          # MACOSX_DEPLOYMENT_TARGET maps to -mmacosx-version-min
+          'MACOSX_DEPLOYMENT_TARGET': '<(mac_deployment_target)',
           'PREBINDING': 'NO',                       # No -Wl,-prebind
           'SYMROOT': '<(DEPTH)/xcodebuild',
           'USE_HEADERMAP': 'NO',
           'OTHER_CFLAGS': [
             '-fno-strict-aliasing',
           ],
           'WARNING_CFLAGS': [
             '-Wall',
             '-Wendif-labels',
             '-W',
             '-Wno-unused-parameter',
             '-Wnon-virtual-dtor',
           ],
         },
         'target_conditions': [
           ['_type!="static_library"', {
             'xcode_settings': {'OTHER_LDFLAGS': ['-Wl,-search_paths_first']},
           }],
         ],  # target_conditions
       },  # target_defaults
     }],  # OS=="mac"
   ],
 }