Ubuntu CMake在简单测试程序中失败

我在Xubuntu19.10上，试图编译一个程序。几天前它还在工作，但在重新启动我的计算机后，由于某种原因，我的

build

目录消失了。我正在尝试重新制作，但在

cmake..

上失败了。我得到的错误是

-- The C compiler identification is GNU 9.2.1
-- The CXX compiler identification is GNU 9.2.1
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- broken
CMake Error at /usr/share/cmake-3.13/Modules/CMakeTestCCompiler.cmake:52 (message):
  The C compiler

"/usr/bin/cc"

  is not able to compile a simple test program.

  It fails with the following output:

Change Dir: /home/bojohnson/Documents/MagPhyxP/build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/gmake" "cmTC_77531/fast"
CMake Error: The source directory "/home/bojohnson/Documents/MagPhyxP/build/CMakeFiles/CMakeTmp/cmTC_77531/fast" does not exist.
Specify --help for usage, or press the help button on the CMake GUI.




  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:3 (project)


-- Configuring incomplete, errors occurred!
See also "/home/bojohnson/Documents/MagPhyxP/build/CMakeFiles/CMakeOutput.log".
See also "/home/bojohnson/Documents/MagPhyxP/build/CMakeFiles/CMakeError.log".

对于这个问题，我尝试了许多其他建议，例如

set（CMAKE\u TRY\u COMPILE\u TARGET\u TYPE“STATIC\u LIBRARY”）

或

set（CMAKE\u C\u COMPILER\u WORKS 1）

---

SET（CMAKE\u CXX\u COMPILER\u WORKS 1）

但我仍然得到相同的错误

我将这些项目放在

CMakeLists.txt

文件的错误部分的底部。

SET（CMAKE\u C\u COMPILER\u WORKS 1）

和

SET（CMAKE\u CXX\u COMPILER\u WORKS 1）

行需要放在

项目（）的前面