[SOLVED] Conditional include directories for native code in Android Studio

Issue

I'm trying to consume this pre-packaged build of libgmp for Android: https://github.com/Rupan/gmp

My project is built using Android Studio. I can "build" the pre-package library without trouble.

However, the package has different gmp.h header files depending on the platform (ie. arm64-v8a/gmp.h, armeabi/gmp.h, ...). My own native code is being built using CMake. I would like to include the appropriate directory using include_directories so I can use the appropriate header file.

Is there a variable or conditional that I can use for this?

Solution

arm64-v8a, armeabi are values of CMAKE_ANDROID_ARCH_ABI variable. So you may use this variable when declare an include directory:

include_directories("<...>/${CMAKE_ANDROID_ARCH_ABI}")

Answered By - Tsyvarev