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。

清除cmake构建输出:

命令行:

$ rm -rf [folder that you builded the project]/
$ cmake --build .

Cmake:

cmake --build . --target clean

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

我用zsxwing的答案成功解决了以下问题:

我有在多个主机上构建的源代码(在Raspberry Pi Linux板上，在VMware Linux虚拟机上，等等)。

我有一个Bash脚本，根据机器的主机名创建临时目录，就像这样:

# Get hostname to use as part of directory names
HOST_NAME=`uname -n`

# Create a temporary directory for cmake files so they don't
# end up all mixed up with the source.

TMP_DIR="cmake.tmp.$HOSTNAME"

if [ ! -e $TMP_DIR ] ; then
  echo "Creating directory for cmake tmp files : $TMP_DIR"
  mkdir $TMP_DIR
else
  echo "Reusing cmake tmp dir : $TMP_DIR"
fi

# Create makefiles with CMake
#
# Note: switch to the temporary dir and build parent 
#       which is a way of making cmake tmp files stay
#       out of the way.
#
# Note 2: to clean up cmake files, it is OK to
#        "rm -rf" the temporary directories

echo
echo Creating Makefiles with cmake ...

cd $TMP_DIR

cmake ..

# Run makefile (in temporary directory)

echo
echo Starting build ...

make

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。)

这是我用的。它被包装在一个函数中，它是跨平台的，它演示了如何找到匹配的文件名或文件夹名，以防你想做任何简单的调整。这个函数在我每次构建脚本时都运行，并且完美地满足了我的需求。

function(DELETE_CACHE)
    if(CMAKE_HOST_WIN32)
        execute_process(COMMAND cmd /c for /r %%i in (CMakeCache.*) do del "%%i" WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
        execute_process(COMMAND cmd /c for /d /r %%i in (*CMakeFiles*) do rd /s /q "%%i" WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
    else()
        execute_process(COMMAND find . -name "CMakeCache.*" -delete WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
        execute_process(COMMAND "rm -rf `find . -type d -name CMakeFiles`" WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
    endif()
endfunction()