--- /usr/portage/app-doc/doxygen/doxygen-1.8.10-r1.ebuild	2016-02-28 03:53:19.000000000 +0100
+++ /usr/portage/app-doc/doxygen/doxygen-1.8.10-r1.ebuild	2016-02-28 11:43:27.344638259 +0100
@@ -142,6 +142,7 @@ 
 	# fatal, hence the ewarn message TeX's font caching in /var/cache/fonts
 	# causes sandbox warnings, so we allow it.
 	if use doc; then
+		export VARTEXFONTS="${T}/fonts"
 		if ! use dot; then
 			sed -i -e "s/HAVE_DOT               = YES/HAVE_DOT    = NO/" \
 				{Doxyfile,doc/Doxyfile} \