- For Android build, `ANDROID_NDK_HOME` must be confifigured by using ``export ANDROID_NDK_HOME=/path/to/ndk``
- It will link ``libc++`` instead of ``gnustl`` if ``NDK version >= r17b`` and ``bazel version >= 0.13.0``, please refer to `NDK cpp-support <https://developer.android.com/ndk/guides/cpp-support>`__.
- For Mac, please install Homebrew at first before installing other dependencies. Set ANDROID_NDK_HOME in ``/etc/bashrc`` and then run ``source /etc/bashrc``. This installation was tested with macOS Mojave(10.14).