Support DEVELOPER_DIR in gyp-ninja for mac.

pylib/gyp/common.py

 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 from __future__ import with_statement
 
 import collections
 import errno
 import filecmp
 import os.path
@@ skipping 415 matching lines @@
   if sys.platform.startswith('openbsd'):
     return 'openbsd'
   if sys.platform.startswith('netbsd'):
     return 'netbsd'
   if sys.platform.startswith('aix'):
     return 'aix'
 
   return 'linux'
 
 
-def CopyTool(flavor, out_path):
+def CopyTool(flavor, out_path, generator_flags={}):
   """Finds (flock|mac|win)_tool.gyp in the gyp directory and copies it
   to |out_path|."""
   # aix and solaris just need flock emulation. mac and win use more complicated
   # support scripts.
   prefix = {
       'aix': 'flock',
       'solaris': 'flock',
       'mac': 'mac',
       'win': 'win'
       }.get(flavor, None)
   if not prefix:
     return
 
   # Slurp input file.
   source_path = os.path.join(
       os.path.dirname(os.path.abspath(__file__)), '%s_tool.py' % prefix)
   with open(source_path) as source_file:
     source = source_file.readlines()
 
+  # Set custom header flags.
+  header = '# Generated by gyp. Do not edit.\n'
+  mac_toolchain_dir =  generator_flags.get('mac_toolchain_dir', None)
+  if flavor == 'mac' and mac_toolchain_dir:
+    header += "import os;\nos.environ['DEVELOPER_DIR']='%s'\n" \
+        % mac_toolchain_dir
+
   # Add header and write it out.
   tool_path = os.path.join(out_path, 'gyp-%s-tool' % prefix)
   with open(tool_path, 'w') as tool_file:
     tool_file.write(
-        ''.join([source[0], '# Generated by gyp. Do not edit.\n'] + source[1:]))
+        ''.join([source[0], header] + source[1:]))
 
   # Make file executable.
   os.chmod(tool_path, 0755)
 
 
 # From Alex Martelli,
 # http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/52560
 # ASPN: Python Cookbook: Remove duplicates from a sequence
 # First comment, dated 2001/10/13.
 # (Also in the printed Python Cookbook.)
@@ skipping 128 matching lines @@
 def CrossCompileRequested():
   # TODO: figure out how to not build extra host objects in the
   # non-cross-compile case when this is enabled, and enable unconditionally.
   return (os.environ.get('GYP_CROSSCOMPILE') or
           os.environ.get('AR_host') or
           os.environ.get('CC_host') or
           os.environ.get('CXX_host') or
           os.environ.get('AR_target') or
           os.environ.get('CC_target') or
           os.environ.get('CXX_target'))