aclocal 1.9.5 is generating the following warning for gnome-libs 1.4.2: /usr/share/aclocal/libart.m4:11: warning: underquoted definition of AM_PATH_LIBART
Created attachment 58590 [details, diff] patch fixes the warning
These are harmless warnings for unmaintained old versions and patching would just be a lot of effort for no gain.