Created attachment 197420 [details] patch Passes poudriere on 11amd64.
Maintainer informed via mail
This version appears to be faulty: https://gitlab.com/libxc/libxc/issues/66 It looks for non-existent 'config.h'. Need to wait for the fix, next version.
A commit references this bug: Author: yuri Date: Sat Oct 20 23:29:31 UTC 2018 New revision: 482633 URL: https://svnweb.freebsd.org/changeset/ports/482633 Log: science/libxc: Update 3.0.0 -> 4.2.3 PR: 231648 Approved by: dieterich@ogolem.org (maintainer's timeout; 27 days) Changes: head/science/atom/Makefile head/science/bagel/Makefile head/science/jdftx/Makefile head/science/libgridxc/Makefile head/science/libxc/Makefile head/science/libxc/distinfo head/science/libxc/files/ head/science/libxc/files/patch-src_xc.h head/science/libxc/pkg-descr head/science/libxc/pkg-plist head/science/madness/Makefile head/science/octopus/Makefile head/science/py-gpaw/Makefile
Committed.