cmake 简单使用

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我是靠谱客的博主拼搏滑板，这篇文章主要介绍cmake 简单使用，现在分享给大家，希望可以做个参考。

cmake文件基本结构

文件名 CMakeLists.txt

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cmake_minimum_required(VERSION 3.10)

# set the project name
project(Tutorial)

# add the executable
add_executable(Tutorial tutorial.cxx)

指令介绍

名称	参数	说明
set	参数名值	定义变量
add_executable	可执行程序名源文件	生成可执行程序
target_link_libraries
messages
find_package
include_directories
include

简单使用技巧

保存安装和编译信息

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make | tee LOG_make.txt
make install | tee LOG_install.txt
make >& LOG_make.txt
make install >& LOG_install.txt

C++ 版本设置

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# Check C++xx support 17,14,11,0x
include(CheckCXXCompilerFlag)
CHECK_CXX_COMPILER_FLAG("-std=c++17" COMPILER_SUPPORTS_CXX17)
CHECK_CXX_COMPILER_FLAG("-std=c++14" COMPILER_SUPPORTS_CXX14)
CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)
CHECK_CXX_COMPILER_FLAG("-std=c++0x" COMPILER_SUPPORTS_CXX0X)
if(COMPILER_SUPPORTS_CXX17)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")
   set(CMAKE_CXX_STANDARD 17)
   add_definitions(-DCOMPILEDWITHC17)
   message(STATUS "Using flag -std=c++17.")
elseif(COMPILER_SUPPORTS_CXX14)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14")
   set(CMAKE_CXX_STANDARD 14)
   add_definitions(-DCOMPILEDWITHC14)
   message(STATUS "Using flag -std=c++14.")
elseif(COMPILER_SUPPORTS_CXX11)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
   set(CMAKE_CXX_STANDARD 11)
   add_definitions(-DCOMPILEDWITHC11)
   message(STATUS "Using flag -std=c++11.")
elseif(COMPILER_SUPPORTS_CXX0X)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")
   set(CMAKE_CXX_STANDARD 0x)
   add_definitions(-DCOMPILEDWITHC0X)
   message(STATUS "Using flag -std=c++0x.")
else()
   message(FATAL_ERROR "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. Please use a different C++ compiler.")
endif()

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# Check C++xx support 17,14,11,0x
include(CheckCXXCompilerFlag)
CHECK_CXX_COMPILER_FLAG("-std=c++17" COMPILER_SUPPORTS_CXX17)
CHECK_CXX_COMPILER_FLAG("-std=c++14" COMPILER_SUPPORTS_CXX14)
CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)
CHECK_CXX_COMPILER_FLAG("-std=c++0x" COMPILER_SUPPORTS_CXX0X)
if(COMPILER_SUPPORTS_CXX17)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")
   set(CMAKE_CXX_STANDARD 17)
   add_definitions(-DCOMPILEDWITHC17)
   message(STATUS "Using flag -std=c++17.")
elseif(COMPILER_SUPPORTS_CXX14)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14")
   set(CMAKE_CXX_STANDARD 14)
   add_definitions(-DCOMPILEDWITHC14)
   message(STATUS "Using flag -std=c++14.")
elseif(COMPILER_SUPPORTS_CXX11)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
   set(CMAKE_CXX_STANDARD 11)
   add_definitions(-DCOMPILEDWITHC11)
   message(STATUS "Using flag -std=c++11.")
elseif(COMPILER_SUPPORTS_CXX0X)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")
   set(CMAKE_CXX_STANDARD 0x)
   add_definitions(-DCOMPILEDWITHC0X)
   message(STATUS "Using flag -std=c++0x.")
else()
   message(FATAL_ERROR "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. Please use a different C++ compiler.")
endif()

编译器设置

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set (CMAKE_C_COMPILER "/usr/bin/gcc-9")
set (CMAKE_CXX_COMPILER "/usr/bin/g++-9")

生成路径设置

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SET(EXECUTABLE_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/bin)
SET(LIBRARY_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/lib)

指定 Module 查找路径

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list(APPEND CMAKE_MODULE_PATH /home/ubuntu-segate/apps/g2o/cmake_modules)
find_package( CSparse)
MESSAGE("CSparse: lib: " ${CSPARSE_LIB} " include: " ${CSPARSE_INCLUDE_DIR})

文件批量添加，并移除指定文件

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file(GLOB G2O_LIB_NAMES /usr/local/lib/libg2o*.so)
file(GLOB SUB_SRC ${PROJECT_SOURCE_DIR}/src/*)
file(GLOB SUB_INCLUDE ${PROJECT_SOURCE_DIR}/include/*)
list(REMOVE_ITEM SUB_SRC ${PROJECT_SOURCE_DIR}/src/user.cpp)
add_library(${PROJECT_NAME} SHARED
${SUB_SRC}
${SUB_INCLUDE}
)