CMAKE_SOURCE_DIR 顶级 CMakeLists.txt 文件所在路径(这个变量与子目录中的 CMakeLists.txt 文件无关) CMAKE_BINARY_DIR 项目实际构建路径，假设在build目录进行的构建，那么得到的就是这个目录的路径(这个变量与子目录中的 CMakeLists.txt 文件无关) CMAKE_CURRENT_SOURCE_DIR 当前处理 ...

When looking through a large list of projects, one thing becomes apparent: a description of the build process always is stored in a group of files. These files can be simple shell scripts, Makefiles, ...