轉自:http://blog.csdn.net/arackethis/article/details/43488177
鏈接:http://blog.csdn.net/ktigerhero3/article/details/70313350 多目錄工程的CmakeLists.txt編寫(自動添加多目錄下的文件)
總結一下include_directories,link_directories,link_libraries和target_link_libraries的作用。尤其是後面三個參數,比較相似,容易弄混。
INCLUDE_DIRECTORIES(添加頭文件目錄)
它相當於g++選項中的-I參數的作用,也相當於環境變量中增加路徑到CPLUS_INCLUDE_PATH變量的作用(這裏特指c++。c和Java中用法類似)。
比如:
include_directories("/opt/MATLAB/R2012a/extern/include")
export CPLUS_INCLUDE_PATH=CPLUS_INCLUDE_PATH:$MATLAB/extern/include
LINK_DIRECTORIES(添加需要鏈接的庫文件目錄)
語法:
link_directories(directory1 directory2 ...)
它相當於g++命令的-L選項的作用,也相當於環境變量中增加LD_LIBRARY_PATH的路徑的作用。
比如:
LINK_DIRECTORIES("/opt/MATLAB/R2012a/bin/glnxa64")
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$MATLAB/bin/glnxa64
LINK_LIBRARIES (添加需要鏈接的庫文件路徑,注意這裏是全路徑)
List of direct link dependencies.
比如:
LINK_LIBRARIES("/opt/MATLAB/R2012a/bin/glnxa64/libeng.so")
LINK_LIBRARIES("/opt/MATLAB/R2012a/bin/glnxa64/libmx.so")
也可以寫成:
LINK_LIBRARIES("/opt/MATLAB/R2012a/bin/glnxa64/libeng.so" "/opt/MATLAB/R2012a/bin/glnxa64/libmx.so")
TARGET_LINK_LIBRARIES (設置要鏈接的庫文件的名稱)
語法:TARGET_LINK_LIBRARIES(targetlibrary1 <debug | optimized> library2 ..)
比如(以下寫法(包括備註中的)都可以):
TARGET_LINK_LIBRARIES(myProject hello),連接libhello.so庫
TARGET_LINK_LIBRARIES(myProject libhello.a)
TARGET_LINK_LIBRARIES(myProject libhello.so)
再如:
TARGET_LINK_LIBRARIES(myProject libeng.so) #這些庫名寫法都可以。
TARGET_LINK_LIBRARIES(myProject eng)
TARGET_LINK_LIBRARIES(myProject -leng)
一個簡單的示例(以下CMakeLists.txt效果相當,在ubuntu 12.04 + g++4.6下測試編譯通過):
方式一:
- cmake_minimum_required(VERSION 2.8 FATAL_ERROR)
- include_directories("/opt/MATLAB/R2012a/extern/include")
- #directly link to the libraries.
- LINK_LIBRARIES("/opt/MATLAB/R2012a/bin/glnxa64/libeng.so")
- LINK_LIBRARIES("/opt/MATLAB/R2012a/bin/glnxa64/libmx.so")
- #equals to below
- #LINK_LIBRARIES("/opt/MATLAB/R2012a/bin/glnxa64/libeng.so" "/opt/MATLAB/R2012a/bin/glnxa64/libmx.so")
- add_executable(myProject main.cpp)
方式二:
- cmake_minimum_required(VERSION 2.8 FATAL_ERROR)
- include_directories("/opt/MATLAB/R2012a/extern/include")
- LINK_DIRECTORIES("/opt/MATLAB/R2012a/bin/glnxa64")
- add_executable(myProject main.cpp)
- target_link_libraries(myProject eng mx)
- #equals to below
- #target_link_libraries(myProject -leng -lmx)
- #target_link_libraries(myProject libeng.so libmx.so)