Created attachment 193249 [details] Patch for the port's makefile which should disable compile time cpu optimizations. When the application works as expected, and launched with no commandline options the lower half of the GUI should be an interactive Guile scheme command prompt, that one can use to control the on screen robot. This prompt appear to break if the compiler uses CPU optimizations. I have attached a patch to disable CPU optimizations for the port's Makefile.
I failed to mention it in my first comment but this is for: games/gnurobots
A commit references this bug: Author: swills Date: Sun May 26 17:01:50 UTC 2019 New revision: 502730 URL: https://svnweb.freebsd.org/changeset/ports/502730 Log: games/gnurobots: fix interactive prompt PR: 228130 Submitted by: Wes Frazier <wes.frazier@members.fsf.org> Changes: head/games/gnurobots/Makefile
Committed, thanks!