如果你跑了

cmake .

它将重新生成CMake文件。如果您将一个新文件添加到由*选择的源文件夹中，这是必需的。比如Cc。

虽然这本身不是“清理”，但它通过重新生成缓存来“清理”CMake文件。

试着使用: cmake——clean-first path-of-CMakeLists.txt-file -B output-dir

-clean-first:先建造目标，然后再建造。 (只清洁，使用-目标清洁。)

我同意外部构建是最好的答案。但是当你必须在源代码内构建的时候，我写了一个Python脚本，可以在这里使用，它:

运行“make clean” 在顶级目录中删除特定的cmake生成的文件，例如CMakeCache.txt 对于每个包含CMakeFiles目录的子目录，它会删除CMakeFiles, Makefile, cmake_install.cmake。 删除所有空子目录。

CMake官方常见问题解答说明:

Some build trees created with GNU autotools have a "make distclean" target that cleans the build and also removes Makefiles and other parts of the generated build system. CMake does not generate a "make distclean" target because CMakeLists.txt files can run scripts and arbitrary commands; CMake has no way of tracking exactly which files are generated as part of running CMake. Providing a distclean target would give users the false impression that it would work as expected. (CMake does generate a "make clean" target to remove files generated by the compiler and linker.) A "make distclean" target is only necessary if the user performs an in-source build. CMake supports in-source builds, but we strongly encourage users to adopt the notion of an out-of-source build. Using a build tree that is separate from the source tree will prevent CMake from generating any files in the source tree. Because CMake does not change the source tree, there is no need for a distclean target. One can start a fresh build by deleting the build tree or creating a separate build tree.

cmake主要生成一个Makefile文件，可以将rm添加到干净的PHONY文件中。

例如,

[root@localhost hello]# ls
CMakeCache.txt  CMakeFiles  cmake_install.cmake  CMakeLists.txt  hello  Makefile  test
[root@localhost hello]# vi Makefile
clean:
        $(MAKE) -f CMakeFiles/Makefile2 clean
        rm   -rf   *.o   *~   .depend   .*.cmd   *.mod    *.ko   *.mod.c   .tmp_versions *.symvers *.d *.markers *.order   CMakeFiles  cmake_install.cmake  CMakeCache.txt  Makefile

这是一个非常旧的文件夹，但是如果你完全删除了cmake-build-debug文件夹，当你使用cmake编译时，它会自动创建一个新的cmake-build-debug文件夹，里面有你需要的所有东西。尤其适用于CLion。