Support stack unwind on Android

[huangqinjin]

No description provided.

[sergiud]

Thanks for the contribution. However, many of the changes are more than questionable. Therefore, please provide a description of the purpose of this PR.

[sergiud]

Is there a chance you could setup a Github action that uses (any) Android NDK? Without a CI pipeline, it is very likely that the Android support will break again.

[huangqinjin]

OK, I will make a separate PR for Android CI.

[sergiud]

Thank you. A separate PR is not needed though. You can add the Github action as part of this PR. This will also ensure your changes actually work.

[huangqinjin]

CI added. I disabled tests since running tests requires emulators.

[sergiud]

Thanks, this looks great now! Some nitpicks:

• It would be nice to document what is actually logged to logcat (e.g., in README.rst)
• Possibly add an option that disables Android specific logging? Something like WITH_LOGCAT in CMake

[sergiud]

I would still build the tests to ensure at least linking works.

[huangqinjin]

Done. I have to set ANDROID_NATIVE_API_LEVEL to at least 28. Because glob function used by tests is introduced in 28.

[sergiud]

Thanks!