Hi i don't know why but after some test on ofxMidi, it didn't compile any of my project...
So i removed my openframeworks directory to rebase it on clean 0.9 but even there it wouldn't compile PG and any of the exemple.
I'm downlaoding the github version to test on master but it's a really weird issue.
The errors look like that : https://forum.openframeworks.cc/t/compileof-sh-works-but-compilepg-sh-fails/15952
Or that : https://gist.github.com/flyingrub/012441d8a4693aff15f6