From 7d85efbf3c8cd0524bf92cec74f73b4484411da7 Mon Sep 17 00:00:00 2001
From: William S Fulton <wsf@fultondesigns.co.uk>
Date: Fri, 19 Feb 2021 20:59:51 +0000
Subject: [PATCH] Lua example fix for newer osx

---
 Examples/lua/owner/example.cxx | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Examples/lua/owner/example.cxx b/Examples/lua/owner/example.cxx
index c2c073d79..a4dcc68a1 100644
--- a/Examples/lua/owner/example.cxx
+++ b/Examples/lua/owner/example.cxx
@@ -3,7 +3,9 @@
 #include "example.h"
 #include <stdio.h>
 
+#ifndef M_PI
 #define M_PI 3.14159265358979323846
+#endif
 
 /* Move the shape to a new location */
 void Shape::move(double dx, double dy) {