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cmake3安装

echo '[group_kdesig-cmake3_EPEL]name=Copr repo for cmake3_EPEL owned by @kdesigbaseurl=https://copr-be.cloud.fedoraproject.org/results/@kdesig/cmake3_EPEL/epel-7-$basearch/type=rpm-mdskip_if_unavailable=Truegpgcheck=1gpgkey=https://copr-be.cloud.fedoraproject.org/results/@kdesig/cmake3_EPEL/pubkey.gpgrepo_gpgcheck=0enabled=1enabled_metadata=1' >> /etc/yum.repos.d/cmake3.repo yum install jsoncpp -yyum install -y cmake3 cmake3 -v

手动安装cmake-3.17.1-Linux-x86_64.tar.gz

解压到/usr/local/cmake-3.17.1-Linux-x86_64

ln -s  /usr/local/cmake-3.17.1-Linux-x86_64/bin/cmake    /usr/local/bin/cmake

]# cmake  --version

cmake version 3.17.1

CMake suite maintained and supported by Kitware (kitware.com/cmake).

[root@localhost cmake-3.17.1-Linux-x86_64]# 

CMake学习(六) —— if 和 else

 

CentOS 7 源码安装 CMake 3.15.5 最新稳定版。解决

wget https://github.com/Kitware/CMake/releases/download/v3.15.5/cmake-3.15.5.tar.gztar -zxf cmake-3.15.5.tar.gzcd cmake-3.15.5./bootstrap --prefix=/usr --datadir=share/cmake --docdir=doc/cmake && makesudo make installcmake --version

 

 

 

现在使用cmake的项目越来越多，学习了解下。

其实，cmake和autotools正是makefile的上层工具，它们的目的正是为了产生可移植的makefile，并简化自己动手写makefile时的巨大工作量。

#CMAKE_SOURCE_DIR是cmake内置变量表示当前项目根目录

 

 

 

 

接着在同级目录下创建cmake文件 CMakeLists.txt

为了代码干净，同级目录下创建build目录，进入build目录，执行“cmake ./”命令来生成Makefile文件，接着执行命令make编译，最后build目录下生成二进制文件example_01, 执行程序可以输出打印信息。

mkdir buildcd buildcmake ../make-B build   -B 
   
     指定Build Tree路径，不存在则创建cmake . -Bbuild
   

 

vi ./CMakeFiles/viid_server.dir/build.make

找到

/opt/rh/devtoolset-7/root/usr/bin/c++  $(CXX_DEFINES) $(CXX_INCLUDES) $(CXX_FLAGS) -o CMakeFiles/viid_server.dir/mnt/hgfs/liantong/code/nvr-server/03-server/xxxxx/source/xxxxx.cpp.o -c /mnt/hgfs/liantong/code/nvr-server/03-server/xxxxx/source/xxxx.cpp

./CMakeFiles/viid_server.dir/flags.make:CXX_INCLUDES = -

./CMakeFiles/viid_server.dir/DependInfo.cmake:  "../../../../common_tool/plan/plan"

排错

 

 

CmakeLists编写

C++ 项目 使用 CMAKE 和 GOOGLE TEST（傻瓜式教程）

 

./CMakeFiles/xxxxx.dir/link.txt:目录里查找  使用到的lxxx库

vim ./CMakeFiles/xxxxx.dir/depend.make   查找依赖的头文件

t.dir/depend.make:CMakeFiles/secret.dir/mnt/hgfs/liantong/code/nvr-server/03-server/common_tool/secret/source/secret.cpp.o: ../../include/secret.h

./CMakeFiles/secret.dir/DependInfo.cmake:# The include file search paths: ./CMakeFiles/secret.dir/DependInfo.cmake:  "../../include" ./CMakeFiles/secret.dir/DependInfo.cmake:  "../../../../../01-common/include/system" ./CMakeFiles/secret.dir/DependInfo.cmake:  "../../../../../01-common/include/cbb" ./CMakeFiles/secret.dir/DependInfo.cmake:  "../../../base/include" ./CMakeFiles/secret.dir/flags.make:CXX_INCLUDES = -I/mnt/hgfs/liantong/code/nvr-server/03-server/common_tool/secret/prj_linux/../include -I/mnt/hgfs/liantong/code/nvr-server/03-server/common_tool/secret/prj_linux/../../../../01-common/include/system -I/mnt/hgfs/liantong/code/nvr-server/03-server/common_tool/secret/prj_linux/../../../../01-common/include/cbb -I/mnt/hgfs/liantong/code/nvr-server/03-server/common_tool/secret/prj_linux/../../base/include  [root@localhost build]# vim ./CMakeFiles/secret.dir/build.make [root@localhost build]# 

 

查找宏定义

g]# grep  USE_CUT_FRAME ./  -rs

./CMakeCache.txt:USE_CUT_FRAME:UNINITIALIZED=true ./CMakeFiles/gbplat.dir/DependInfo.cmake:  "USE_CUT_FRAME" ./CMakeFiles/gbplat.dir/flags.make:CXX_DEFINES = -DCROW_CHANGE -DUSE_CUT_FRAME -D_DEBUG -D_LINUX_ [root@localhost build-debug]#   

 

指定输出路径

set(EXECUTABLE_OUTPUT_PATH ${CURDIR}) #set(EXECUTABLE_OUTPUT_PATH ${CURDIR}/../../)

cmake添加相对路径 GET_FILENAME_COMPONENT(PARENT_DIR ${PROJECT_SOURCE_DIR} DIRECTORY)  

cmake之 ADD_LIBRARY()

SET(LIBHELLO_SRC hello.c)ADD_LIBRARY(hello SHARED ${LIBHELLO_SRC})ADD_LIBRARY(hello_static STATIC ${LIBHELLO_SRC})

 

多目录工程的CmakeLists.txt编写（自动添加多目录下的文件）