From 291e2e3af661c8c0925f6478bc808b6ac6f31553 Mon Sep 17 00:00:00 2001
From: Peter Barker <pbarker@barker.dropbear.id.au>
Date: Tue, 27 Aug 2019 14:53:51 +1000
Subject: [PATCH] waf: squash expansion-to-defined warnings

We use these a lot in our code and we're not particularly fussed with
portability.
---
 Tools/ardupilotwaf/boards.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Tools/ardupilotwaf/boards.py b/Tools/ardupilotwaf/boards.py
index 7ff1f52a26..b58cb5c39d 100644
--- a/Tools/ardupilotwaf/boards.py
+++ b/Tools/ardupilotwaf/boards.py
@@ -175,6 +175,7 @@ class Board:
             '-Wno-reorder',
             '-Wno-redundant-decls',
             '-Wno-unknown-pragmas',
+            '-Wno-expansion-to-defined',
             '-Werror=attributes',
             '-Werror=format-security',
             '-Werror=enum-compare',