cmake学习

基础的一个 cmake 文件：

cmake_minimum_required(VERSION 3.25)
set(CMAKE_CXX_STANDARD 20)
project(app)

# 可执行文件存储目录
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_SOURCE_DIR}/bin)
# 动态库存储目录
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${PROJECT_SOURCE_DIR}/lib)
# 静态库存储目录
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${PROJECT_SOURCE_DIR}/lib)
# 项目源文件
set(SRC_LIST src/main.cpp src/util.cpp)

add_executable(app ${SRC_LIST})
add_library(util STATIC ${SRC_LIST})
add_library(util1 SHARED ${SRC_LIST})
# 使用 include_directories 一次性指定所有的头文件寻找路径
include_directories(${CMAKE_SOURCE_DIR}/include)

# 为每个对象设置搜索目录
# 为 app 目标设置头文件的搜索目录
# target_include_directories(app PUBLIC include/)
# 为 util 静态库设置头文件的搜索目录
# target_include_directories(util PUBLIC ${CMAKE_SOURCE_DIR}/include)

# 链接库
target_link_libraries(app util util1)

${PROJECT_SOURCE_DIR}指向项目根目录！

遍历项目目录下的所有.cpp文件的cmake

cmake_minimum_required(VERSION 3.28)
project(demo2)

set(CMAKE_CXX_STANDARD 23)
# set(CMAKE_CXX_FLAGS "-fno-elide-constructors")
file(GLOB files "${CMAKE_CURRENT_SOURCE_DIR}/*.cpp")
foreach (file ${files})
    # https://www.cnblogs.com/faithlocus/p/15613720.html
    get_filename_component(name ${file} NAME_WE)
    message(${name})
    add_executable(${name} ${file})
endforeach ()