Hi Dimitrios,
It looks like there is still a problem with the latest git head. It seems that there may have been a mishap with the patching, and the patch has been reversed at some point? I can see in b7027842 that the C++11 has been set back to ON in the CMakeLists file. I personally keep a debian/source/local-options file like so, to enforce patches-unapplied in my other repository: https://anonscm.debian.org/cgit/debian-science/packages/3depict.git/tree/debian/source/local-options?id=7fc15a0ad61ab38f0c1e4c1b2085dadf212d693c Last time I checked this was the recommended thing to do, as quilt + gbp dont play nicely together. I'm not totally clear what is going on here, but removing the .pc directory and going back to a patches-unapplied git seems to fix the problem for me. I dont want to push any changes until we agree on what both the cause of the problem and what the solution is. Thanks!