if a package has something like: ACLOCAL_AMFLAGS = -I m4 in the toplevel Makefile.am, these flags arent respected by autotools.eclass
ive committed this: http://sources.gentoo.org/eclass/autotools.eclass?r1=1.73&r2=1.74
This fix breaks stable wireshark, bug #219029. wireshark's Makefile.am has: ACLOCAL_AMFLAGS = `./aclocal-flags` inside.
fixed: http://sources.gentoo.org/eclass/autotools.eclass?r1=1.74&r2=1.75