This when emerging mono: >>> Emerging (1 of 2) dev-lang/mono-1.2.2.1 to / * Regenerating the build files, this will take some time... * Running eautoreconf in '/var/tmp/portage/mono-1.2.2.1/work/mono-1.2.2.1/libgc' ... * QA Notice: ${WANT_AUTOCONF} variable unset. Please report on http://bugs.gentoo.org/ * QA Notice: ${WANT_AUTOMAKE} variable unset. Please report on http://bugs.gentoo.org/ Should be added the WANT_* variables.
we've taken the route of defaulting to latest in the eclass: http://sources.gentoo.org/viewcvs.py/gentoo-x86/eclass/autotools.eclass?r1=1.62&r2=1.63