Determining if the include file pthread.h exists failed with the following output:
Change Dir: D:/Testprojekte/WEQ/CMakeFiles/CMakeTmp

Run Build Command(s):C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/MSBuild/Current/Bin/MSBuild.exe cmTC_5fae1.vcxproj /p:Configuration=Debug /p:Platform=x64 /p:VisualStudioVersion=16.0 /v:m && Microsoft (R)-Build-Engine, Version 16.11.2+f32259642 für .NET Framework

Copyright (C) Microsoft Corporation. Alle Rechte vorbehalten.



  Microsoft (R) C/C++-Optimierungscompiler Version 19.29.30146 für x64

  Copyright (C) Microsoft Corporation. Alle Rechte vorbehalten.

  CheckIncludeFile.cxx

  cl /c /Zi /W1 /WX- /diagnostics:column /Od /Ob0 /D WIN32 /D _WINDOWS /D "CMAKE_INTDIR=\"Debug\"" /D _MBCS /Gm- /EHsc /RTC1 /MDd /GS /fp:precise /Zc:wchar_t /Zc:forScope /Zc:inline /GR /Fo"cmTC_5fae1.dir\Debug\\" /Fd"cmTC_5fae1.dir\Debug\vc142.pdb" /external:W1 /Gd /TP /errorReport:queue D:\Testprojekte\WEQ\CMakeFiles\CMakeTmp\CheckIncludeFile.cxx

D:\Testprojekte\WEQ\CMakeFiles\CMakeTmp\CheckIncludeFile.cxx(1,10): fatal error C1083: Datei (Include) kann nicht geöffnet werden: "pthread.h": No such file or directory [D:\Testprojekte\WEQ\CMakeFiles\CMakeTmp\cmTC_5fae1.vcxproj]