--- vigra-1.10.0.ebuild	2014-12-29 18:01:12.000000000 +0100
+++ vigra-1.10.0.ebuild	2015-07-16 15:40:34.431312323 +0200
@@ -115,7 +115,7 @@
 	if use doc; then
 		einfo "Generating Documentation"
 		# use build dir from last compile command
-		BUILD_DIR="${VIGRA_BUILD_DIR}" cmake-utils_src_make doc
+		VARTEXFONTS="${T}/fonts" BUILD_DIR="${VIGRA_BUILD_DIR}" cmake-utils_src_make doc
 	fi
 }