ninja windows: support precompiled headers

pylib/gyp/xcode_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 contains classes that help to emulate xcodebuild behavior on top of
 other build systems, such as make and ninja.
 """
 
 import gyp.common
@@ skipping 734 matching lines @@
       lang = {
         '.c': 'c',
         '.cpp': 'cc', '.cc': 'cc', '.cxx': 'cc',
         '.m': 'm',
         '.mm': 'mm',
       }.get(ext, None)
       if lang:
         result.append((source, obj, self._Gch(lang)))
     return result
 
-  def GetGchBuildCommands(self):
-    """Returns [(path_to_gch, language_flag, language, header)].
+  def GetPchBuildCommands(self):
+    """Returns [(path_to_gch, language_flag, language, header, extra_vars)].
     |path_to_gch| and |header| are relative to the build directory.
     """
     if not self.header or not self.compile_headers:
       return []
     return [
-      (self._Gch('c'), '-x c-header', 'c', self.header),
-      (self._Gch('cc'), '-x c++-header', 'cc', self.header),
-      (self._Gch('m'), '-x objective-c-header', 'm', self.header),
-      (self._Gch('mm'), '-x objective-c++-header', 'mm', self.header),
+      (self._Gch('c'), '-x c-header', 'c', self.header, []),
+      (self._Gch('cc'), '-x c++-header', 'cc', self.header, []),
+      (self._Gch('m'), '-x objective-c-header', 'm', self.header, []),
+      (self._Gch('mm'), '-x objective-c++-header', 'mm', self.header, []),
     ]
 
 
 def MergeGlobalXcodeSettingsToSpec(global_dict, spec):
   """Merges the global xcode_settings dictionary into each configuration of the
   target represented by spec. For keys that are both in the global and the local
   xcode_settings dict, the local key gets precendence.
   """
   # The xcode generator special-cases global xcode_settings and does something
   # that amounts to merging in the global xcode_settings into each local
@@ skipping 243 matching lines @@
 def GetSpecPostbuildCommands(spec, quiet=False):
   """Returns the list of postbuilds explicitly defined on |spec|, in a form
   executable by a shell."""
   postbuilds = []
   for postbuild in spec.get('postbuilds', []):
     if not quiet:
       postbuilds.append('echo POSTBUILD\\(%s\\) %s' % (
             spec['target_name'], postbuild['postbuild_name']))
     postbuilds.append(gyp.common.EncodePOSIXShellList(postbuild['action']))
   return postbuilds