This is an auto-filed bug because games-roguelike/hengband fails to compile. The issue was originally discovered on amd64, but it may be reproducible on other arches as well. If you think that a different summary clarifies the issue better, feel free to change it. Attached build log and emerge --info. NOTE: If you need further logs, feel free to ask.
Created attachment 641026 [details] build.log build log and emerge --info
I have reproduced this failure on amd64. I'll be working to try to resolve the error.
https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=3deea32a6485c3bf92baafd7ffb6a8e93cc99537