--- dirdiff-2.1/Makefile.orig	2005-04-19 14:22:01 +0400
+++ dirdiff-2.1/Makefile	2006-03-22 20:04:17 +0300
@@ -12,7 +12,7 @@
 all:	libfilecmp.so.0.0
 
 libfilecmp.so.0.0: filecmp.c
-	$(CC) $(CFLAGS) -shared -o $@ filecmp.c
+	$(CC) $(CFLAGS) -shared -o $@ filecmp.c -ltcl
 
 install: dirdiff libfilecmp.so.0.0
 	$(INSTALL) -c dirdiff $(BINDIR)