I have gone through path '0001-Support-building-with-visual-studio-2019.patch' only, but I am sure some comments will also apply to back branches.
1. The VisualStudioVersion value looks odd: + $self->{VisualStudioVersion} = '16.0.32.32432'; Are you using a pre-release version [1]? 2. There is a typo: s/stuido/studio/: + # The major visual stuido that is suppored has nmake version >= 14.20 and < 15. There is something in the current code that I think should be also updated. The code for _GetVisualStudioVersion contains: if ($major > 14) { carp "The determined version of Visual Studio is newer than the latest supported version. Returning the latest supported version instead."; return '14.00'; } Shouldn't the returned value be '14.20' for Visual Studio 2019? Regards, Juan José Santamaría Flecha [1] https://docs.microsoft.com/en-us/visualstudio/releases/2019/history#release-dates-and-build-numbers