zebra: Do not build mlag protobuf support if version 3 is not avail

Older versions of protobuf-c do not support version 3 of the
protocol.  Add a check into the system to see if we have
version 3 available and if so, compile it in.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/zebra/zebra_mlag_vty.h b/zebra/zebra_mlag_vty.h
new file mode 100644
index 0000000000..c3dfdf74e0
--- /dev/null
+++ b/zebra/zebra_mlag_vty.h
@@ -0,0 +1,31 @@
+/* Zebra Mlag vty Code.
+ * Copyright (C) 2019 Cumulus Networks, Inc.
+ *                    Donald Sharp
+ *
+ * This file is part of FRR.
+ *
+ * FRR is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * FRR is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with FRR; see the file COPYING.  If not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+#ifndef __ZEBRA_MLAG_VTY_CODE__
+#define __ZEBRA_MLAG_VTY_CODE__
+
+extern int32_t zebra_mlag_test_mlag_internal(const char *none,
+					     const char *primary,
+					     const char *secondary);
+
+extern void zebra_mlag_vty_init(void);
+
+#endif