The configure script uses libxslt if detected, but the dependency is conditional on latex plugin. Not sure what is the correct way to take care of this, though: configure apparently has no switch to disable libxslt, which is apparently only used via latex plugin.
+ 13 Dec 2013; Pacho Ramos <pacho@gentoo.org> abiword-3.0.0-r1.ebuild: + perl is only a DEPEND and libxslt is always needed (#493790 and #493878 by + Maxim Kammerer) +