$OpenBSD: patch-doc_Makefile_in,v 1.1 2011/08/29 09:54:51 espie Exp $
--- doc/Makefile.in.orig	Wed Aug 17 11:05:03 2011
+++ doc/Makefile.in	Wed Aug 17 11:05:16 2011
@@ -335,7 +335,7 @@ all: stamp-doxygen stamp-latex
 
 doxygen.cfg: $(srcdir)/doxygen.cfg.in
 	-rm -f $@
-	sed 's|@SRCDIR@|$(srcdir)|g; s|@TOP_SRCDIR@|$(top_srcdir)|g' $< > $@
+	sed 's|@SRCDIR@|$(srcdir)|g; s|@TOP_SRCDIR@|$(top_srcdir)|g' $(srcdir)/doxygen.cfg.in > $@
 
 stamp-doxygen: doxygen.cfg
 @DOXYGEN_TRUE@	doxygen doxygen.cfg
