1.cmake版本需求

cmake_minimum_required(VERSION 3.4.1)

2.定义目录

set(COMMON_DIR ${PROJECT_DIR}/src/main/cpp/common)
set(TOOLKIT_DIR ${PROJECT_DIR}/src/main/cpp/toolkit)
set(LIBYUV_DIR ${TOOLKIT_DIR}/libyuv/libs)
set(LIBYUV_INCLUDE_DIR ${LIBYUV_DIR}/include)

3.依赖的头文件目录

include_directories(${COMMON_DIR}
${LIBYUV_INCLUDE_DIR}
${TOOLKIT_DIR})

4.链接库目录

link_directories(${LIBYUV_DIR}/${ANDROID_ABI})

5.定义生成库

add_library(Toolkits
SHARED
${TOOLKIT_DIR}/jni_interface.cpp)

6.根据cpu类型，设置特殊配置

if( ${ANDROID_ABI} MATCHES "armeabi-v7a" )

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -mfloat-abi=softfp -mfpu=neon -march=armv7-a -mtune=cortex-a8")

message(${ANDROID_ABI},当前启用neon设置)

endif(${ANDROID_ABI} MATCHES "armeabi-v7a")

7.设置编译参数

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DUSE_JNI_LOG=1")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DANDROID_STL=gnustl_static")
set(CMAKE_VERBOSE_MAKEFILE on)

8.目标链接库

target_link_libraries(Toolkits yuv)
target_link_libraries(Toolkits log)