cmake报错：Could not find compiler set in environment variable RC:_cmake error at c:/program files/cmake/share/cmake-

问题现象

使用cmake-gui生成vs工程，进行configure时，报错信息如下：

CMake Error at C:/Program Files/CMake/share/cmake-3.18/Modules/CMakeDetermineRCCompiler.cmake:25 (message):
  Could not find compiler set in environment variable RC:

  C:\Program Files (x86)\Windows Kits\10\bin\10.0.15063.0\x86\.
Call Stack (most recent call first):
  C:/Program Files/CMake/share/cmake-3.18/Modules/Platform/Windows-MSVC.cmake:437 (enable_language)
  C:/Program Files/CMake/share/cmake-3.18/Modules/Platform/Windows-MSVC.cmake:421 (__windows_compiler_msvc_enable_rc)
  C:/Program Files/CMake/share/cmake-3.18/Modules/Platform/Windows-MSVC-C.cmake:5 (__windows_compiler_msvc)
  C:/Program Files/CMake/share/cmake-3.18/Modules/CMakeCInformation.cmake:48 (include)
  CMakeLists.txt:11 (project)
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问题分析

看报错日志，找不到环境变量RC设置的编译器，输出的RC变量值为空，所以原因是RC变量没有设置

解决方案

那么为什么没有设置RC变量呢？我试了重装cmake, 重装vs，重新下载需要cmake的代码，还是报错。

后来看到一篇博客，博主是通过命令行传入RC变量：

cmake -G Ninja -B build .
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于是我试了下在CMakeDetermineRCCompiler.cmake文件中直接设置RC变量值为：Ninja

清理cmake缓存，然后重新configure就正常运行了。。