http://bugs.gentoo.org/330047

--- src/Makefile.am
+++ src/Makefile.am
@@ -5,5 +5,5 @@
 
 fe3ddir		= @datadir@/@PACKAGE@
 fe3d_imgdir  	= @datadir@/@PACKAGE@/img
-fe3d_DATA	= $(top_srcdir)/data/*
-fe3d_img_DATA 	= $(top_srcdir)/data/img/*
+fe3d_DATA	= $(top_srcdir)/data/*.xml
+fe3d_img_DATA 	= $(top_srcdir)/data/img/*.png