Your package is runtime-depending on sys-devel/automake standing to
http://tinderbox.dev.gentoo.org/misc/rindex/sys-devel/automake .
sys-devel/automake is a tool used almost always at build-time, (it's either a
build system or a generator - sorry this is a generic template I start with so
I can't tell you right away which one). This means that it should only be
depended at build-time.
Please correct your ebuild or document why it is used as a runtime-dependency
so that it will not be suspected again.
Thanks,
Diego