--- a/Makefile	Thu May 20 23:36:53 2010 +0200
+++ b/Makefile	Thu Jun 03 12:59:32 2010 +0200
@@ -66,7 +66,7 @@
 
 Makefile.depend depend:
 	$(CXX) -MM -MG -I. *.cc \
-	  | perl -pe 's/:/ Makefile.depend:/' > Makefile.depend
+	  | sed 's/:/ Makefile.depend:/' > Makefile.depend
 
 include Makefile.depend