Hi I just compiled the recent version of GEM on downloaded from https://github.com/umlaeute/Gem and I followed the instructions on that page.
I am had to run the bash autogen.sh before of autoconfig, and more than this it happens that when I open pd-extended with the new GEM all pix_ objects seem ok except for [gemwin] !!! which does not exist. Or, if I do -path /.abstractions it exists but simply does not work.
I run pd-extended 0.43.4, with Xubuntu 14.04, 64 bit.
Thanks for any feedback Mick