With NDK r16b and GStreamer 1.14.0 android binaries:

  Error while executing process /Users/philn/dev/android/ndk-bundle/ndk-build with arguments {NDK_PROJECT_PATH=null APP_BUILD_SCRIPT=/Users/philn/dev/gst-build/gst-examples/playback/player/android/app/src/main/jni/Android.mk NDK_APPLICATION_MK=/Users/philn/dev/gst-build/gst-examples/playback/player/android/app/src/main/jni/Application.mk APP_ABI=arm64-v8a NDK_ALL_ABIS=arm64-v8a NDK_DEBUG=1 APP_PLATFORM=android-21 NDK_OUT=/Users/philn/dev/gst-build/gst-examples/playback/player/android/app/build/intermediates/ndkBuild/debug/obj NDK_LIBS_OUT=/Users/philn/dev/gst-build/gst-examples/playback/player/android/app/build/intermediates/ndkBuild/debug/lib NDK_APPLICATION_MK=src/main/jni/Application.mk GSTREAMER_JAVA_SRC_DIR=src/main/java GSTREAMER_ROOT_ANDROID=/Users/philn/dev/libgstreamer_android_gen/gst-android-1.14/ GSTREAMER_ASSETS_DIR=src/main/assets /Users/philn/dev/gst-build/gst-examples/playback/player/android/app/build/intermediates/ndkBuild/debug/obj/local/arm64-v8a/libgstplayer.so}
  GStreamer      : [GEN] => gst-build-arm64-v8a/gstreamer_android.c
  GStreamer      : [COMPILE] => gst-build-arm64-v8a/gstreamer_android.c
  GStreamer      : [LINK] => gst-build-arm64-v8a/libgstreamer_android.so
  /Users/philn/dev/libgstreamer_android_gen/gst-android-1.14//arm64/lib/libcrypto.a(sha1-armv8.o): In function `sha1_block_data_order':
  /home/jan/devel/gstreamer/cerbero/build/sources/android_universal/arm64/openssl-1.1.0g/crypto/sha/sha1-armv8.s:12: multiple definition of `sha1_block_data_order'
  /Users/philn/dev/libgstreamer_android_gen/gst-android-1.14//arm64/lib/libgnutls.a(sha1-armv8.o):/home/jan/devel/gstreamer/cerbero/build/sources/android_universal/arm64/gnutls-3.5.18/lib/accelerated/aarch64/lib/accelerated/aarch64/elf/sha1-armv8.s.tmp.S:52: first defined here
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  make: *** [buildsharedlibrary_arm64-v8a] Error 1