Index: gnustep-base-1.14.0.ebuild
===================================================================
--- gnustep-base-1.14.0.ebuild	(revision 9622)
+++ gnustep-base-1.14.0.ebuild	(working copy)
@@ -49,6 +49,10 @@
 }
 
 src_install() {
+	# we need this because the doc generation program uses the gnustep-base
+	# libraries
+	egnustep_env
+	use doc && export LD_LIBRARY_PATH="${D}${GNUSTEP_SYSTEM_LIBRARIES}:${LD_LIBRARY_PATH}"
 	gnustep-base_src_install
 
 	dodir /etc/revdep-rebuild