Merge pull request #4447 from facebook/android-cmake

added android cmake build

.github/workflows/android-ndk-build.yml

@@ -37,3 +37,14 @@ jobs:
              RANLIB=llvm-ranlib \
              STRIP=llvm-strip
 
+    - name: Build with CMake and NDK
+      run: |
+        mkdir -p build-android
+        cd build-android
+        cmake --version
+        cmake ../build/cmake \
+          -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK_HOME/build/cmake/android.toolchain.cmake \
+          -DANDROID_ABI=arm64-v8a \
+          -DANDROID_PLATFORM=android-21 \
+          -DCMAKE_BUILD_TYPE=Release
+        cmake --build . --parallel