CMake
find_package()
示例
find_package(fmt 10.2.1 REQUIRED)
target_link_libraries(YOUR_TARGET fmt::fmt)fmt：包名10.2.1：最小要求版本REQUIRED：表示 CMake 必须找到该包，否则停止构建
如果库本身的 CMake 配置写得足够规范，通常这两步就足够完成依赖接入。
库的搜索路径
# 这些是 find_package() 的一部分搜索路径
# 这里只列出常见变量，完整机制请参考官方文档
# ${CMAKE_PREFIX_PATH} 是 CMake 变量
# $ENV{CMAKE_PREFIX_PATH} 是 shell 环境变量
message("CMAKE_PREFIX_PATH: ${CMAKE_PREFIX_PATH}")
message("CMAKE_FRAMEWORK_PATH: ${CMAKE_FRAMEWORK_PATH}")
message("CMAKE_APPBUNDLE_PATH: ${CMAKE_APPBUNDLE_PATH}")
message("CMAKE_PREFIX_PATH env: $ENV{CMAKE_PREFIX_PATH}")
message("CMAKE_FRAMEWORK_PATH env: $ENV{CMAKE_FRAMEWORK_PATH}")
message("CMAKE_APPBUNDLE_PATH env: $ENV{CMAKE_APPBUNDLE_PATH}")
message("PATH env: $ENV{PATH}")
message("CMAKE_SYSTEM_PREFIX_PATH: ${CMAKE_SYSTEM_PREFIX_PATH}")
message("CMAKE_SYSTEM_FRAMEWORK_PATH: ${CMAKE_SYSTEM_FRAMEWORK_PATH}")
message("CMAKE_SYSTEM_APPBUNDLE_PATH: ${CMAKE_SYSTEM_APPBUNDLE_PATH}")
message("CMAKE_FIND_ROOT_PATH: ${CMAKE_FIND_ROOT_PATH}")官方文档：https://cmake.org/cmake/help/latest/command/find_package.html