如何修复 CMake generation is not allowed within the source directory
问题
构建 CMake 项目时，你看到如下错误消息
cmake_run_in_build_dir.txt
CMake Error at CMakeLists.txt:844 (message):
CMake generation is not allowed within the source directory! Remove the
CMakeCache.txt file and try again from another folder, e.g.: rm
CMakeCache.txt mkdir cmake-make cd cmake-make cmake ..解决方案
此项目要求你创建单独的构建目录并从那里运行 CMake。以下是你可以这样做的方法：
为构建文件创建新目录：
mkdir_build.shmkdir build cd build从新目录运行 CMake：
cmake_build.sh
cmake ..注意是 cmake .. 而不是 cmake .，因为你希望 CMake 从父目录构建项目。
如果这不起作用，你必须删除 CMakeCache.txt 文件并重试：
remove_cmakecache.sh
rm CMakeCache.txt # if you are running from the root of the project
rm ../CMakeCache.txt # if you are running this from the build directory然后，再次尝试运行 cmake ..。
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