7.6 使用废弃函数、宏和变量
准备工作
cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
project(recipe-06 LANGUAGES NONE)
macro(custom_include_guard)
if(NOT DEFINED included_modules)
set(included_modules)
endif()
if ("${CMAKE_CURRENT_LIST_FILE}" IN_LIST included_modules)
message(WARNING "module ${CMAKE_CURRENT_LIST_FILE} processed more than once")
endif()
list(APPEND included_modules ${CMAKE_CURRENT_LIST_FILE})
endmacro()
include(cmake/custom.cmake)
message(STATUS "list of all included modules: ${included_modules}")具体实施
工作原理
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