$NetBSD: patch-src_preproc_eqn_eqn.ypp,v 1.1 2020/03/30 19:32:24 joerg Exp $
--- src/preproc/eqn/eqn.ypp.orig 2020-03-29 11:19:42.584035045 +0000
+++ src/preproc/eqn/eqn.ypp
@@ -16,6 +16,10 @@ for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see . */
%{
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
#include
#include
#include