After upgrade QtCreator from version 4.1.0 to 4.2.0, an error occurs on project compilation:
'cl' is not recognized as an internal or external command
Perhaps for this reason, in Tools>Options>Build & Run>Kits there is a warning that the compiler for CMake is not configured (screenshot attached).
If i disable jom usage, an error occurs:
Could not start process "nmake.exe" clean
Error while building/deploying project DebugTest (kit: Desktop)
The kit Desktop has configuration issues which might be the root cause for this problem.
There is a suspicion that QtCreator ignores the compiler's environment variable settings initialization on Tools>Options>Build & Run>Compilers (vcvarsall.bat on screenshot).