cmakelists添加第三方库

1.设置第三方库路径

SET(INC_DIR "usr/local/include/")
SET(LINK_DIR "usr/local/lib")

2.设置头文件搜索路径

include_directories(${INC_DIR})

3.指定要链接的路径

link_directories(${LINK_DIR})

通过log4cplus（C++日志库）举例子

之后生成可执行文件

include_directories(${INC_DIR}/log4cplus)
file(GLOB SRCLOG src/Log4jcpp.cpp)
add_executable(demolog ${SRCLOG} )
target_link_libraries(demolog log4cplus)