--- a/Makefile.old	2011-06-14 22:12:00.920386798 +0200
+++ b/Makefile	2011-06-14 22:12:22.118716548 +0200
@@ -11,7 +11,7 @@
 EDTOB = editor
 EDWOB = editworld
 
-LINLIBS=$(LDLIBS) -lGL
+LINLIBS=$(LDLIBS) -lGL -ldl
 LINEXE = ../lin/moleinvasion
 LINEDT = ../lin/editor
 LINEDW = ../lin/editworld