CMake 常用宏分享
介绍
在本人多年的CMake使用过程中，有两个自定义宏被广泛且频繁使用。分别是：
1. GROUP_FILES
根据项目目录结构，分组显示c++文件，实现目录结构与项目结构的对应。
# MACRO GROUP_FILES MACRO(GROUP_FILES src_files root_path) SET(cur_dir ${root_path}) FOREACH(group_files ${${src_files}}) STRING(REGEX REPLACE ${cur_dir}/\(.*\) \\1 sgbd_fpath ${group_files}) STRING(REGEX REPLACE "\(.*\)/.*" \\1 sgbd_group_name ${sgbd_fpath}) STRING(COMPARE EQUAL ${sgbd_fpath} ${sgbd_group_name} sgbd_nogroup) STRING(REPLACE "/" "\\" sgbd_group_name ${sgbd_group_name}) IF(sgbd_nogroup) SOURCE_GROUP("" FILES ${group_files}) ELSE() INCLUDE_DIRECTORIES(${sgbd_group_name}) SOURCE_GROUP(${sgbd_group_name} FILES ${group_files}) ENDIF(sgbd_nogroup) ENDFOREACH(group_files) ENDMACRO(GROUP_FILES)2. EXCLUDE_FILES
根据匹配规则移除项目中的文件，在跨平台开发中，主要用于移除其它平台相关的代码文件。
MACRO(EXCLUDE_FILES src_files rescure exclude_dir) FILE(${rescure} excludefiles ${exclude_dir}) FOREACH(excludefile ${excludefiles}) LIST(REMOVE_ITEM ${src_files} ${excludefile}) ENDFOREACH(excludefile) ENDMACRO(EXCLUDE_FILES)应用
这里我们以glslang库为例
# Set Module Name SET(MODULE_NAME glslang) # message MESSAGE( STATUS "Configuring module: ${MODULE_NAME} ...") # Include Directories INCLUDE_DIRECTORIES( ${ECHO_SRC_PATH}) INCLUDE_DIRECTORIES( ${CMAKE_CURRENT_SOURCE_DIR}) # Link Directories LINK_DIRECTORIES(${CMAKE_LIBRARY_OUTPUT_DIRECTORY}) # set module path SET(MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}) # Recursive get all files FILE( GLOB_RECURSE ALL_FILES *.h *.inl *.c *.cpp *.mm) # remove files by platform IF(ECHO_PLATFORM_WIN32) EXCLUDE_FILES(ALL_FILES GLOB_RECURSE ${MODULE_PATH}/glslang/OSDependent/Unix/*.*) ELSE() EXCLUDE_FILES(ALL_FILES GLOB_RECURSE ${MODULE_PATH}/glslang/OSDependent/Windows/*.*) ENDIF() # Group GROUP_FILES(ALL_FILES ${CMAKE_CURRENT_SOURCE_DIR}) # Add library ADD_LIBRARY(${MODULE_NAME} ${ALL_FILES} CMakeLists.txt) # Set Folder SET_TARGET_PROPERTIES(${MODULE_NAME} PROPERTIES FOLDER "thirdparty") # Message MESSAGE(STATUS "Configure ${MODULE_NAME} success!")
结论
通过对GROUP_FILES 与 EXCLUDE_FILES的使用，极端情况下只需要修改 ${MODULE_NAME}，就可以实现一个c++库的CMake化。
