Created attachment 224117 [details]
poudriere build log
When choosing MOTIF as gui the configure script doesn't recognise the mkdir syscall. While the script then finishes normally, this causes the build to fail later. (See attached log.)
At the moment I'm not sure if this is FreeBSD specific, or if upstream is affected as well on other platforms.
Apparently this issue was present since several versions, that's why I didn't mark the option as broken in the patch submitted with issue 255063. At least it shows that preferring the Motif ui to the Gtk one puts me into a clear minority position...
I'll attach a rather ham-fisted workaround as well. It likely isn't suitable long term, but might be useful being documented as reference.
Created attachment 224118 [details]
Quick and dirty workaround