VS ninja build output

>------ Build started: Project: CMakeLists, Configuration: Debug ------
  [1/2] C:\PROGRA~1\MINGW-~1\X86_64~1.0-W\mingw64\bin\C__~1.EXE    -g   -std=gnu++1z -MD -MT CMakeFiles/vsNinjaTest.dir/main.cpp.obj -MF CMakeFiles\vsNinjaTest.dir\main.cpp.obj.d -o CMakeFiles/vsNinjaTest.dir/main.cpp.obj -c C:/Users/anton/Documents/Spelutveckling/C++/vsNinjaTest/main.cpp
  FAILED: CMakeFiles/vsNinjaTest.dir/main.cpp.obj
  C:\PROGRA~1\MINGW-~1\X86_64~1.0-W\mingw64\bin\C__~1.EXE    -g   -std=gnu++1z -MD -MT CMakeFiles/vsNinjaTest.dir/main.cpp.obj -MF CMakeFiles\vsNinjaTest.dir\main.cpp.obj.d -o CMakeFiles/vsNinjaTest.dir/main.cpp.obj -c C:/Users/anton/Documents/Spelutveckling/C++/vsNinjaTest/main.cpp
  C:/Users/anton/Documents/Spelutveckling/C++/vsNinjaTest/main.cpp:1:10: fatal error: foo.h: No such file or directory

   #include "foo.h"

            ^~~~~~~

  compilation terminated.

  ninja: build stopped: subcommand failed.