I build Gem from git on RPi 2 in the beginning of February and wrote a report on this list
the build might work with RPi3 and is in Deken

+
a

--
do it yourself                      
http://antoine.villeret.free.fr

2016-04-19 17:38 GMT+02:00 Bastiaan van den Berg <buzz@spacedout.nl>:
You need to enable opengl first, as noted on ; 

https://www.raspberrypi.org/forums/viewtopic.php?f=91&t=128464
--
buZz

_______________________________________________
Pd-list@lists.iem.at mailing list
UNSUBSCRIBE and account-management -> https://lists.puredata.info/listinfo/pd-list