From a15d9ca9ccfeebfcea148fc61ead3a70541e2a76 Mon Sep 17 00:00:00 2001
From: Jon TURNEY <jon.turney@dronecode.org.uk>
Date: Fri, 24 Jul 2009 20:33:25 +0100
Subject: Fix building of GLSL demos which use M_PI

Some <math.h> files do not define M_PI, in which case, provide our own definition

Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
---
 progs/glsl/twoside.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'progs/glsl/twoside.c')

diff --git a/progs/glsl/twoside.c b/progs/glsl/twoside.c
index a57484f96c..ce155d64e9 100644
--- a/progs/glsl/twoside.c
+++ b/progs/glsl/twoside.c
@@ -16,6 +16,9 @@
 #include <GL/glut.h>
 #include "shaderutil.h"
 
+#ifndef M_PI
+#define M_PI 3.1415926535
+#endif
 
 static GLint WinWidth = 300, WinHeight = 300;
 static char *FragProgFile = NULL;
-- 
cgit v1.2.3