cmake-advanced

CMake 进阶

现代 CMake 以“目标”为核心：

cmake_minimum_required(VERSION 3.20)
project(demo LANGUAGES CXX)
set(CMAKE_CXX_STANDARD 20)

add_library(core src/core.cpp)
target_include_directories(core PUBLIC include)
target_compile_features(core PUBLIC cxx_std_20)

add_executable(app src/main.cpp)
target_link_libraries(app PRIVATE core)

依赖管理：

include(FetchContent)
FetchContent_Declare(fmt GIT_REPOSITORY https://github.com/fmtlib/fmt.git GIT_TAG 10.2.1)
FetchContent_MakeAvailable(fmt)
target_link_libraries(app PRIVATE fmt::fmt)

生成配置与安装：target_compile_definitions、target_compile_options、install(TARGETS ...)、find_package 等。