# $ cmake --version 设置cmake最小版本号 cmake_minimum_required(VERSION 3.5) # 指定工程名 PROJECT (HELLO) # 现阶段，你只需要了解 SET 指令可以用来显式的定义变量即可 # 将 hello.cpp 赋值给 SRC_LIST 变量，也可以指定多个源文件，用空格隔开 # SET(SRC_LIST hello.cpp add.cpp sub.cpp) SET(SRC_LIST hello.cpp) # 输出打印构建目录 MESSAGE(STATUS "This is HELLO_BINARY_DIR " ${HELLO_BINARY_DIR}) # 输出打印资源目录 MESSAGE(STATUS "This is HELLO_SOURCE_DIR " ${HELLO_SOURCE_DIR}) # 输出打印资源目录，与HELLO_SOURCE_DIR 一样 MESSAGE(STATUS "This is PROJECT_SOURCE_DIR " ${PROJECT_SOURCE_DIR}) # 输出打印 CMake 资源目录，与 PROJECT_SOURCE_DIR 一样 MESSAGE(STATUS "This is CMAKE_SOURCE_DIR " ${CMAKE_SOURCE_DIR}) # 生成可执行文件 hello ，${SRC_LIST}是引用变量，也就是源文件 hello.cpp ADD_EXECUTABLE(hello ${SRC_LIST})
文件结构：
[root@centos8 A-hello-cmake]# tree .
.
├── CMakeLists.txt
├── main.cpp
└── README.adoc
执行：
[root@centos8 A-hello-cmake]# mkdir build [root@centos8 A-hello-cmake]# cd build [root@centos8 build]# cmake .. -- The C compiler identification is GNU 8.4.1 -- The CXX compiler identification is GNU 8.4.1 -- Check for working C compiler: /usr/bin/cc -- Check for working C compiler: /usr/bin/cc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Detecting C compile features -- Detecting C compile features - done -- Check for working CXX compiler: /usr/bin/c++ -- Check for working CXX compiler: /usr/bin/c++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Detecting CXX compile features -- Detecting CXX compile features - done -- This is HELLO_BINARY_DIR /sunbin/cmake-examples/01-basic/A-hello-cmake/build -- This is HELLO_SOURCE_DIR /sunbin/cmake-examples/01-basic/A-hello-cmake -- This is PROJECT_SOURCE_DIR /sunbin/cmake-examples/01-basic/A-hello-cmake -- This is CMAKE_SOURCE_DIR /sunbin/cmake-examples/01-basic/A-hello-cmake -- Configuring done -- Generating done -- Build files have been written to: /sunbin/cmake-examples/01-basic/A-hello-cmake/build