I can't seem to get Lib protobuffer to compile into a .so file to be used by another native library.

Even with the Android.mk file that is included, there's a bunch of errors, such as:

./src/google/protobuf/stubs/common.cc:39:20: fatal error: config.h: No such file or directory
or

In file included from ./src/google/protobuf/extension_set.cc:35:0:
./src/google/protobuf/stubs/hash.h:164:55: error: expected template-name before '<' token
 class hash_map : public HASH_NAMESPACE::HASH_MAP_CLASS<

people have claimed this has worked: http://stackoverflow.com/questions/7144008/how-to-build-protocol-buffer-by-android-ndk but i can't figure out what commit hash that android.mk works for.

Is there a commit along with a make file that is known to work?

fyi, i'm using
ndk-build V=1 NDK_PROJECT_PATH=. APP_BUILD_SCRIPT=Android.mk APP_STL=stlport_static APP_ABI=armeabi-v7a to compile