$OpenBSD: patch-Makefile_in,v 1.4 2010/11/04 20:13:10 sthen Exp $
--- Makefile.in.orig	Thu Aug 20 20:41:13 2009
+++ Makefile.in	Thu Sep 16 11:35:26 2010
@@ -42,7 +42,7 @@ distclean: clean
 	-rm -f VERSION
 	-rm -f packages/rpm/doxygen.spec
 
-DATE=$(shell date "+%B %Y")
+DATE=`date "+%B %Y"`
 
 MAN1DIR = man/man1