Determining if the include file pthread.h exists failed with the following output:
Change Dir: C:/Users/Damyan/Desktop/input_events/out/build/x64-Debug/CMakeFiles/CMakeTmp

Run Build Command(s):C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/Common7/IDE/CommonExtensions/Microsoft/CMake/Ninja/ninja.exe cmTC_66cec && [1/2] Building CXX object CMakeFiles\cmTC_66cec.dir\CheckIncludeFile.cxx.obj
FAILED: CMakeFiles/cmTC_66cec.dir/CheckIncludeFile.cxx.obj 
C:\PROGRA~2\MICROS~2\2019\COMMUN~1\VC\Tools\MSVC\1429~1.300\bin\Hostx64\x64\cl.exe  /nologo /TP   /DWIN32 /D_WINDOWS /W3 /GR /EHsc  /MDd /Zi /Ob0 /Od /RTC1 /showIncludes /FoCMakeFiles\cmTC_66cec.dir\CheckIncludeFile.cxx.obj /FdCMakeFiles\cmTC_66cec.dir\ /FS -c CheckIncludeFile.cxx
CheckIncludeFile.cxx(1): fatal error C1083: Cannot open include file: 'pthread.h': No such file or directory
ninja: build stopped: subcommand failed.