Compilation with MSYS2 + MSVC 2019 "Couldn't create the udata mappings/cns-11643-1992.cnv"
This issue might be related to ICU-20315. The difference with that issue is that I used the MSVC 2019 compiler instead of mingw-w64. It can still be reproduced on maint-64 branch with the latest commit 2b828fe198bd770fed00fc59e72121b1eb90c143 as of writing.
Build will proceed as usual if the following hack is applied.
I think this would be addressed by the changes in the following two PRs:
If there are still issues then I think we should create new tickets.
There is a commit on this ticket shipping in ICU 68. Should the ticket be marked as fixed with fix version 68.1?