Created attachment 153710 [details] Patch qpopper requires gcc for a single performance-related compiler flag which clang doesn't know. This is needless, remove the flag if clang is used and drop GCC dependency.
if the flag is not needed, why not just remove it unconditionally and don't even bother with USES=compiler:features ?
A commit references this bug: Author: amdmi3 Date: Wed Mar 4 16:31:55 UTC 2015 New revision: 380446 URL: https://svnweb.freebsd.org/changeset/ports/380446 Log: - Don't needlessly require gcc PR: 198224 Submitted by: amdmi3 Approved by: bc979@lafn.org (maintainer) Changes: head/mail/qpopper/Makefile
(In reply to John Marino from comment #1) Because it may improve performance on gcc and because it's better to not change upstream code unless it's really needed.