Hi, I tried to package locally the gtksourceview3 library from git. It failed due to similar reasons. And this is not the only package suffering from missing enhancement to dh_autoreconf. Additionally intltoolize should also be added [1].
Or maybe instead of dh_autoreconf something like dh_autogen with different options should be introduced in Debian? Regards, Andrey [1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=741703