ninja windows: support alternative entrypoints.

pylib/gyp/msvs_emulation.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.
 
 """
 This module helps emulate Visual Studio 2008 behavior on top of other
 build systems, primarily ninja.
 """
 
 import os
@@ skipping 342 matching lines @@
     ld('FixedBaseAddress', map={'1': ':NO', '2': ''}, prefix='/FIXED')
     ld('RandomizedBaseAddress',
         map={'1': ':NO', '2': ''}, prefix='/DYNAMICBASE')
     ld('DataExecutionPrevention',
         map={'1': ':NO', '2': ''}, prefix='/NXCOMPAT')
     ld('OptimizeReferences', map={'1': 'NOREF', '2': 'REF'}, prefix='/OPT:')
     ld('EnableCOMDATFolding', map={'1': 'NOICF', '2': 'ICF'}, prefix='/OPT:')
     ld('LinkTimeCodeGeneration', map={'1': '/LTCG'})
     ld('IgnoreDefaultLibraryNames', prefix='/NODEFAULTLIB:')
     ld('ResourceOnlyDLL', map={'true': '/NOENTRY'})
+    ld('EntryPointSymbol', prefix='/ENTRY:')
     # TODO(scottmg): This should sort of be somewhere else (not really a flag).
     ld('AdditionalDependencies', prefix='')
     # TODO(scottmg): These too.
     ldflags.extend(('kernel32.lib', 'user32.lib', 'gdi32.lib', 'winspool.lib',
         'comdlg32.lib', 'advapi32.lib', 'shell32.lib', 'ole32.lib',
         'oleaut32.lib', 'uuid.lib', 'odbc32.lib', 'DelayImp.lib'))
 
     # If the base address is not specifically controlled, DYNAMICBASE should
     # be on by default.
     base_flags = filter(lambda x: 'DYNAMICBASE' in x or x == '/FIXED',
@@ skipping 176 matching lines @@
   return vs.SetupScript()
 
 def ExpandMacros(string, expansions):
   """Expand $(Variable) per expansions dict. See MsvsSettings.GetVSMacroEnv
   for the canonical way to retrieve a suitable dict."""
   if '$' in string:
     for old, new in expansions.iteritems():
       assert '$(' not in new, new
       string = string.replace(old, new)
   return string