$OpenBSD: patch-doc_Makefile_in,v 1.2 2012/05/03 06:50:09 ajacoutot Exp $
--- doc/Makefile.in.orig	Sun Mar 11 19:09:48 2012
+++ doc/Makefile.in	Mon Mar 12 05:55:37 2012
@@ -364,7 +364,7 @@ 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
