Your bug report #7800: automake fails to honor `-d' in AM_YFLAGS when variable expansions are involved which was filed against the automake package, has been closed. The explanation is attached below, along with your original report. If you require more details, please reply to 7800@debbugs.gnu.org. -- 7800: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=7800 GNU Bug Tracking System Contact help-debbugs@gnu.org with problems