现在要调用一个第3方库libwebrtc_audio_preprocessing.so

最终布局如下：

即创建2个文件夹，将第3方库放进去。

include目录放第3方库的头文件 

其中lib目录如下：

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE := webrtc_audio_preprocessing

LOCAL_SRC_FILES := libwebrtc_audio_preprocessing.so

#prebuilt user libraries

include $(PREBUILT_SHARED_LIBRARY)

最上层的Android.mk如下：

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE := apm

LOCAL_SRC_FILES := apm_jni_wrapper.cpp

 

LOCAL_LDLIBS += -llog -lz -landroid

LOCAL_SHARED_LIBRARIES := webrtc_audio_preprocessing

include $(BUILD_SHARED_LIBRARY)

#place it in the end

include $(LOCAL_PATH)/lib/Android.mk

运行ndk-build后，会将第3方库拷贝到armeabi-v7a目录下。