$NetBSD: patch-ab,v 1.12 2011/11/07 12:14:15 drochner Exp $

This patch makes imlib2 compile on systems that don't have an lround
function, which is defined in C99.

Needed at least for NetBSD-1.6.2 and NetBSD-2.0.

--- src/lib/color_helpers.c.orig	2005-01-08 08:55:02.000000000 +0100
+++ src/lib/color_helpers.c	2006-07-19 18:11:42.222074773 +0200
@@ -1,4 +1,22 @@
+#include <math.h>
+#include <stdlib.h>
+
 #include "color_helpers.h"
+
+#ifdef __DragonFly__
+#include <sys/param.h>
+#endif
+
+#if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__INTERIX) || \
+    (defined(__DragonFly__) && __DragonFly_version <= 130002)		\
+  || defined(__sun) && defined(__SunOS_5_8)
+#define lround(x) my_lround(x)
+static long my_lround(double x)
+{
+	return (long) ((x) >= 0 ? (x) + 0.5 : (x) - 0.5);
+}
+#endif
+
 /*
  * Color space conversion helper routines
  * Convert between rgb and hsv and between rgb and hls