Support Mac android cross compile.

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 errno
 import filecmp
 import os.path
 import re
@@ skipping 380 matching lines @@
   if sys.platform.startswith('sunos'):
     return 'solaris'
   if sys.platform.startswith('freebsd'):
     return 'freebsd'
   if sys.platform.startswith('aix'):
     return 'aix'
 
   return 'linux'
 
 
+def GetHostOS():
+  """Returns flavor with no parameter overrides."""
+  return GetFlavor({})
+
+
 def CopyTool(flavor, out_path):
   """Finds (mac|sun|win)_tool.gyp in the gyp directory and copies it
   to |out_path|."""
   prefix = { 'solaris': 'sun', '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)
@@ skipping 69 matching lines @@
       return
     visited.add(node)
     visiting.add(node)
     for neighbor in get_edges(node):
       Visit(neighbor)
     visiting.remove(node)
     ordered_nodes.insert(0, node)
   for node in sorted(graph):
     Visit(node)
   return ordered_nodes