On 10.3 amd64 (directly on bare metal as well as in poudriere)
/usr/ports/graphics/linux-c6-dri$ make DEVELOPER=yes check-plist
====> Checking for pkg-plist issues (check-plist)
===> Parsing plist
===> Checking for items in STAGEDIR missing from pkg-plist
Error: Orphaned: usr/lib/libGL.so.1
===> Checking for items in pkg-plist which are not in STAGEDIR
===> Error: Plist issues found.
===> Warning: Test was done with PREFIX != LOCALBASE
===> Warning: The port may not be properly installing into PREFIX
*** Error code 1
make: stopped in /usr/ports/graphics/linux-c6-dri
A commit references this bug:
Date: Fri Nov 4 10:01:35 UTC 2016
New revision: 425308
Fix build for people with DEVELOPER=yes.