NonSFI mode: Add libcrt_platform for native/mixed linking.

pnacl/driver/pnacl-driver.py

Index: pnacl/driver/pnacl-driver.py
diff --git a/pnacl/driver/pnacl-driver.py b/pnacl/driver/pnacl-driver.py
index 5621fb1ee280eefaee0db5b8263d379cf9d493a6..384472a680d84a1a43bfc1f4f6e2bfd1a1e9a0a6 100755
--- a/pnacl/driver/pnacl-driver.py
+++ b/pnacl/driver/pnacl-driver.py
@@ -494,10 +494,12 @@ def main(argv):
   if env.getbool('ALLOW_NATIVE'):
     if not compiling_to_native:
       Log.Fatal("--pnacl-allow-native without -arch is not meaningful.")
-    # For native/mixed links, also bring in the native libgcc to avoid link
-    # failure if pre-translated native code needs functions from it.
+    # For native/mixed links, also bring in the native libgcc and
+    # libcrt_platform to avoid link failure if pre-translated native
+    # code needs functions from it.
     env.append('LD_FLAGS', env.eval('-L${LIBS_NATIVE_ARCH}'))
     env.append('STDLIBS', '-lgcc')
+    env.append('STDLIBS', '-lcrt_platform')
 
 
   if not env.get('STDLIB'):