CMake Error at CMakeLists.txt:5 (PROJECT): The CMAKE_C_COMPILER: cl is not a full path

川长思鸟来 2022-02-18 09:57 1916阅读 1赞

报错：

\- Building for: NMake Makefiles  
\-- The C compiler identification is unknown  
\-- The CXX compiler identification is unknown  
CMake Error at CMakeLists.txt:5 (PROJECT):  
  The CMAKE\_C\_COMPILER:

is not a full path and was not found in the PATH.

To use the NMake generator with Visual C++, cmake must be run from a shell  
  that can use the compiler cl from the command line.  This environment is  
  unable to invoke the cl compiler.  To fix this problem, run cmake from the  
  Visual Studio Command Prompt (vcvarsall.bat).

Tell CMake where to find the compiler by setting either the environment  
  variable "CC" or the CMake cache entry CMAKE\_C\_COMPILER to the full path to  
  the compiler, or to the compiler name if it is in the PATH.

CMake Error at CMakeLists.txt:5 (PROJECT):  
  The CMAKE\_CXX\_COMPILER:

is not a full path and was not found in the PATH.

Tell CMake where to find the compiler by setting either the environment  
  variable "CXX" or the CMake cache entry CMAKE\_CXX\_COMPILER to the full path  
  to the compiler, or to the compiler name if it is in the PATH.

\-- Configuring incomplete, errors occurred!  
See also "E:/gc/c\_test1/build/CMakeFiles/CMakeOutput.log".  
See also "E:/gc/c\_test1/build/CMakeFiles/CMakeError.log".

解答：

1.不用cmake.. 用下面的命令

cmake -G "MSYS Makefiles" ..

2.如果第一个不行，那么设置路径：

$ export CC=/c/MinGW/bin/gcc.exe
    $ export CXX=/c/MinGW/bin/g++.exe
    $ cmake -G "MinGW Makefiles" ..
    -- The CXX compiler identification is GNU 4.8.1        
    ...
    $ mingw32-make

第2种：

$ cmake -DCMAKE_C_COMPILER=/c/MinGW/bin/gcc.exe -DCMAKE_CXX_COMPILER=/c/MinGW/bin/g++.exe ..

如果还不行，参考下面链接：

[https://www.e-learn.cn/content/wangluowenzhang/22835][https_www.e-learn.cn_content_wangluowenzhang_22835]

[https://stackoverflow.com/questions/29746950/cmake-cannot-find-compiler][https_stackoverflow.com_questions_29746950_cmake-cannot-find-compiler]

[https_www.e-learn.cn_content_wangluowenzhang_22835]: https://www.e-learn.cn/content/wangluowenzhang/22835
[https_stackoverflow.com_questions_29746950_cmake-cannot-find-compiler]: https://stackoverflow.com/questions/29746950/cmake-cannot-find-compiler