Created attachment 203067 [details] Don't mix libwnck and libwnck3 Patch unset libwnck in CONFIGURE_ARGS macro.
Thanks for the patch. Looks like configure is, luckily, smart enough to figure out which version to use correctly, since the resulting package works fine.
A commit references this bug: Author: madpilot Date: Sun Mar 24 09:48:52 UTC 2019 New revision: 496710 URL: https://svnweb.freebsd.org/changeset/ports/496710 Log: Don't mix wnck and wnck3 options in CONFIGURE_ARGS. PR: 236733 Submitted by: Olivier Duchateau <duchateau.olivier@gmail.com> Changes: head/x11/xfce4-taskmanager/Makefile
Committed. Thanks!