I have compiled Gem on the pi3 and it compiles fine and the examples run ok. If there are some magic optimization flags that make it run even better I world also like to know :)

There is one important issue about the OpenGL driver tho. On the latest raspbian Stretch the OpenGL driver runs at 1/4 the speed of the previous raspbian Jessie so I recommend to use Jessie instead for now. You can get it here:

http://downloads.raspberrypi.org/raspbian/images/

"For OpenGL 2.1, you need any version from September 2016 onwards. The last version is 2017-01-11-raspbian-jessie-lite.img"

I got this information from here:

http://www.questions4steveb.co.uk/html/Raspberry_Pi/Stellarium-on-the-Pi

There are other tips in that page that can help.

Another issue is that with the OpenGL driver you can only use the HDMI output. No composite out for now.

On 10 December 2017 at 23:02, Fede Camara Halac <camarafede@gmail.com> wrote:
Indeed, you are right. I will try to find the flags I used. I remember trying to use the raspbian package and not succeeding, hence my need to compile. But I can't prove that right now. I will try later this week.

i'm interested in those optimization flags, though :)

fdch.github.io/tv



> On Dec 10, 2017, at 5:27 PM, IOhannes m zmölnig <zmoelnig@iem.at> wrote:
>
> you must provide those flags to enable optimization, and from your
> description it doesn't sound like you did.

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