Patch changes needed for ios/android build

Summary:
Mostly tweaks for android/ios tool chain

iOS doesn't like binary

Android tool chains seems using clang but the default one is not linking the kernel library and the `--whole-archive` works

Reviewed By: larryliu0820

Differential Revision: D48203714

fbshipit-source-id: 731bb13068fc61f06725d5b08af667b64d088aee