$OpenBSD$
--- Makefile.orig	Thu Mar 11 15:10:04 2010
+++ Makefile	Thu Mar 11 15:11:25 2010
@@ -48,4 +48,4 @@ doc/gpscorrelate-manpage.xml: doc/gpscorrelate-manpage
 	sed  's,@DOCDIR@,$(docdir),' $< > $@
 
 gpscorrelate.1: doc/gpscorrelate-manpage.xml
-	xsltproc http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl $<
+	xsltproc ${LOCALBASE}/share/xsl/docbook/manpages/docbook.xsl $<