Android CMakeList引入第三方动态库

在CMakeList中需要编译自己的动态库，同时引入第三方动态库的CMakeList的写法如下：

cmake_minimum_required(VERSION 3.4.1)

# ${CMAKE_SOURCE_DIR} 表示CMakeLists当前的文件目录
set(include ${CMAKE_SOURCE_DIR}/include)
set(jniLibsDir ${CMAKE_SOURCE_DIR}/../jniLibs/${ANDROID_ABI})

add_library( # Sets the name of the library.
        native-lib
        # Sets the library as a shared library.
        SHARED
        # Provides a relative path to your source file(s).
        native-lib.cpp JavaListener.cpp PlayPCM.cpp
        AudioEncoder.c
        VodDecoder.c
        )

#avcodec
add_library(avcodec SHARED IMPORTED)
set_target_properties(avcodec  PROPERTIES IMPORTED_LOCATION
        ${jniLibsDir}/libavcodec.so)
#avfilter
add_library(avfilter SHARED IMPORTED)
set_target_properties(avfilter  PROPERTIES IMPORTED_LOCATION
        ${jniLibsDir}/libavfilter.so)
#avformat
add_library(avformat SHARED IMPORTED)
set_target_properties(avformat  PROPERTIES IMPORTED_LOCATION
        ${jniLibsDir}/libavformat.so)
#avutil
add_library(avutil SHARED IMPORTED)
set_target_properties(avutil  PROPERTIES IMPORTED_LOCATION
        ${jniLibsDir}/libavutil.so)
#avswresample
add_library(swresample SHARED IMPORTED)
set_target_properties(swresample  PROPERTIES IMPORTED_LOCATION
        ${jniLibsDir}/libswresample.so)
#avswscale
add_library(swscale SHARED IMPORTED)
set_target_properties(swscale  PROPERTIES IMPORTED_LOCATION
        ${jniLibsDir}/libswscale.so)

#引入头文件
include_directories(${CMAKE_SOURCE_DIR}/include)

find_library( # Sets the name of the path variable.
        log-lib
        # Specifies the name of the NDK library that
        # you want CMake to locate.
        log)

#链接需要的库
target_link_libraries( # Specifies the target library.
        native-lib
        ${avcodec-lib}
        ${avfilter-lib}
        ${avformat-lib}
        ${avutil-lib}
        ${swresample-lib}
        ${swscale-lib}
        OpenSLES
        ${android-lib}
        # Links the target library to the log library
        # included in the NDK.
        ${log-lib})

文件中的注释已经写的很清楚了，这里不再做多余的解释
我的C++/C文件和头文件的目录结构（include里边是头文件）:

以下示例是在C文件中引用：

#include <stdio.h>
#include <time.h>
#include "include/VodDecoder.h"
#include "libavcodec/avcodec.h"
#include "libavformat/avformat.h"
#include "libswresample/swresample.h"
#include "libavutil/log.h"