...
android {
  ...
  defaultConfig {
    ...
    externalNativeBuild {
      cmake {
        cppFlags "-O2 -frtti -fexceptions -Wall -fstack-protector-all"
        abiFilters 'x86', 'x86_64', 'armeabi-v7a', 'arm64-v8a'
       }
    }
    ...
  }
  externalNativeBuild {
    cmake {
      path "CMakeLists.txt"
    }
  }
}