* app.gradle android{ ... defaultConfig{ ... ndk { moduleName "ndk-build" } } externalNativeBuild { ndkBuild { path 'jni/Android.mk' } } } * Android.mk LOCAL_PATH := $(call my-dir) include $(CLEAR_VARS) LOCAL_MODULE := GLWaveform LOCAL_SRC_FILES := wave/GLWaveform.cpp wave/TLog.cpp wave/TShader.cpp LOCAL_LDLIBS := -llog -lGLESv2 include $(BUILD_SHARED_LIBRARY) include $(CLEAR_VARS) LOCAL_MODULE := GLWaveform2 LOCAL_SRC_FILES := wave2/GLWaveform2.cpp wave2/TLog.cpp wave2/TShader.cpp LOCAL_LDLIBS := -llog -lGLESv2 include $(BUILD_SHARED_LIBRARY)