[CMake教程] 使用变量示例代码

# CMake最低版本要求 cmake_minimum_required(VERSION 3.20) # 项目名称 project(test_3) message(${PROJECT_NAME}) add_subdirectory(sub1 output1) add_subdirectory(sub2 output2) # 指定生成目标 add_executable(test_3 src/main.c) target_link_libraries(test_3 sub1) set(VAR 12345 234) message("before ${VAR}") set(VAR) message("after ${VAR}") message("################ test_3 ################") message("CMAKE_BINARY_DIR: ${CMAKE_BINARY_DIR}") message("test_3_BINARY_DIR: ${test_3_BINARY_DIR}") message("PROJECT_BINARY_DIR: ${PROJECT_BINARY_DIR}") message("CMAKE_CURRENT_BINARY_DIR: ${CMAKE_CURRENT_BINARY_DIR}") message("CMAKE_SOURCE_DIR: ${CMAKE_SOURCE_DIR}") message("test_3_SOURCE_DIR: ${test_3_SOURCE_DIR}") message("PROJECT_SOURCE_DIR: ${PROJECT_SOURCE_DIR}") message("CMAKE_CURRENT_SOURCE_DIR: ${CMAKE_CURRENT_SOURCE_DIR}") message("CMAKE_VERSION: ${CMAKE_VERSION}") message("CMAKE_MAJOR_VERSION: ${CMAKE_MAJOR_VERSION}") message("CMAKE_MINOR_VERSION: ${CMAKE_MINOR_VERSION}") message("CMAKE_PATCH_VERSION: ${CMAKE_PATCH_VERSION}") message("CMAKE_TWEAK_VERSION: ${CMAKE_TWEAK_VERSION}")