1APP_ABI := armeabi-v7a arm64-v8a 2APP_CPPFLAGS += -fexceptions -frtti 3APP_OPTIM := release 4APP_PLATFORM := android-21 5#APP_STL := gnustl_shared 6#NDK_TOOLCHAIN_VERSION := 4.9 7APP_STL := c++_shared 8NDK_TOOLCHAIN_VERSION := clang 9 10