Created attachment 206423 [details] patch Powerpc64 switches to Clang soon and it can compile lftp just fine. Don't switch to GCC if Clang is used in the first place.
Created attachment 206426 [details] v2 Actually, this port builds with base GCC on powerpc64.
Committed, thanks!
A commit references this bug: Author: martymac Date: Sun Aug 11 19:50:14 UTC 2019 New revision: 508669 URL: https://svnweb.freebsd.org/changeset/ports/508669 Log: Switch to base compiler on powerpc64 PR: 239762 Submitted by: pkubaj Changes: head/ftp/lftp/Makefile