title: NDK build for target x86_64 results in error
body: <p>I have set my NDK build Application.mk configured to do build for target x86_64 with APP_ABI configured as below
   APP_ABI := x86_64</p>
  
  <p>When I run the NDK build with this, I get error as we below:
  Android NDK: NDK Application 'local' targets unknown ABI(s): x86_64
  Android NDK: Please APP_ABI definition in Application.mk</p>
  
  <p>I am running the build on Linux x86_64 machine. Any suggestions on fixing this? Do I need to do some settings/configure NDK to do builds for x86_64.</p>