Change startup ABI for untrusted code to be C-compatible

site_scons/site_tools/naclsdk.py

Index: site_scons/site_tools/naclsdk.py
diff --git a/site_scons/site_tools/naclsdk.py b/site_scons/site_tools/naclsdk.py
index 71e18a57cb57d5047e605a3d2ce7db3d7f927b87..3892652a2b30790b9a5d39d310049920ea89e97b 100755
--- a/site_scons/site_tools/naclsdk.py
+++ b/site_scons/site_tools/naclsdk.py
@@ -277,11 +277,11 @@ def _SetEnvForSdkManually(env):
 
 def PNaClForceNative(env):
   assert(env.Bit('bitcode'))
-  env.Replace(OBJSUFFIX='.o')
-  env.Replace(SHLIBSUFFIX='.so')
-  env.Append(CCFLAGS=['-arch', '${TARGET_FULLARCH}',
-                            '--pnacl-allow-translate'])
-  env.Append(LINKFLAGS=['--pnacl-allow-native'])
+  env.Replace(OBJSUFFIX='.o',
+              SHLIBSUFFIX='.so')
+  env.Append(ASFLAGS=['-arch', '${TARGET_FULLARCH}'],
+             CCFLAGS=['-arch', '${TARGET_FULLARCH}', '--pnacl-allow-translate'],
+             LINKFLAGS=['--pnacl-allow-native'])
 
 # Get an environment for nacl-gcc when in PNaCl mode.
 def PNaClGetNNaClEnv(env):