Use the lowest MacOS SDK available on a system

tools/generate_projects.py

 #!/usr/bin/env python
 #
 # Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 import os
 import sys
 import platform
 
@@ skipping 31 matching lines @@
 # Add gyp to the imports and if needed get it from the third_party location
 # inside the standalone dart gclient checkout.
 try:
   import gyp
 except ImportError, e:
   sys.path.append(os.path.abspath(gyp_pylib))
   import gyp
 
 
 if __name__ == '__main__':
+  dart_root = os.path.dirname(os.path.abspath(os.path.dirname(__file__)))
+
   # Make our own location absolute as it is stored in Makefiles.
   sys.argv[0] = os.path.abspath(sys.argv[0])
 
   # Add any extra arguments. Needed by compiler/dart.gyp to build v8.
   args = sys.argv[2:]
 
   args += ['--depth', project_src]
+  args += ['-D', 'DART_ROOT=' + dart_root]

[Ivan Posva, 2013/03/13 09:44:40]

I would prefer if we did not have to pass this value.

[kustermann, 2013/03/13 15:30:29]

As discussed offline, we don't need this anymore after we removed the two
unnecessary runhooks.

   args += ['-I', './tools/gyp/common.gypi']
 
   if platform.system() == 'Linux':
     # We need to fiddle with toplevel-dir to work around a GYP bug
     # that breaks building v8 from compiler/dart.gyp.
     args += ['--toplevel-dir', os.curdir]
     args += ['--generator-output', project_src]
   else:
     # On at least the Mac, the toplevel-dir should be where the
     # sources are. Otherwise, Xcode won't show sources correctly.
     args += ['--toplevel-dir', project_src]
 
   if sys.platform == 'win32':
     # Generate Visual Studio 2008 compatible files by default.
     if not os.environ.get('GYP_MSVS_VERSION'):
       args.extend(['-G', 'msvs_version=2008'])
 
   # Change into the dart directory as we want the project to be rooted here.
   # Also, GYP is very sensitive to exacly from where it is being run.
   os.chdir(dart_src)
 
   args += [GetProjectGypFile(project_src)]
 
   # Generate the projects.
   sys.exit(gyp.main(args))