Pass the /safeseh option to ml.exe.

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 327 matching lines @@
     generate_debug_info = self._Setting(
         ('VCLinkerTool', 'GenerateDebugInformation'), config)
     if generate_debug_info:
       if output_file:
         return expand_special(self.ConvertVSMacros(output_file, config=config))
       else:
         return default
     else:
       return None
 
+  def GetAsmflags(self, config):
+    """Returns the flags that need to be added to ml invocations."""
+    config = self._TargetConfig(config)
+    asmflags = []
+    safeseh = self._Setting(('MASM', 'UseSafeExceptionHandlers'), config)
+    if safeseh == 'true':
+      asmflags.append('/safeseh')
+    return asmflags
+
   def GetCflags(self, config):
     """Returns the flags that need to be added to .c and .cc compilations."""
     config = self._TargetConfig(config)
     cflags = []
     cflags.extend(['/wd' + w for w in self.msvs_disabled_warnings[config]])
     cl = self._GetWrapper(self, self.msvs_settings[config],
                           'VCCLCompilerTool', append=cflags)
     cl('Optimization',
        map={'0': 'd', '1': '1', '2': '2', '3': 'x'}, prefix='/O', default='2')
     cl('InlineFunctionExpansion', prefix='/Ob')
@@ skipping 601 matching lines @@
 
   # To determine processor word size on Windows, in addition to checking
   # PROCESSOR_ARCHITECTURE (which reflects the word size of the current
   # process), it is also necessary to check PROCESSOR_ARCHITEW6432 (which
   # contains the actual word size of the system when running thru WOW64).
   if ('64' in os.environ.get('PROCESSOR_ARCHITECTURE', '') or
       '64' in os.environ.get('PROCESSOR_ARCHITEW6432', '')):
     default_variables['MSVS_OS_BITS'] = 64
   else:
     default_variables['MSVS_OS_BITS'] = 32