$NetBSD$

--- resis/ResRex.c.orig	2009-08-03 13:43:58.000000000 +0000
+++ resis/ResRex.c
@@ -12,7 +12,7 @@ static char rcsid[] __attribute__ ((unus
 /* It is hard to get the value of MAXFLOAT in a portable manner. */
 #if defined(ibm032)
 #define MAXFLOAT        ((float)3.40282346638528860e+38)
-#elif !defined(__NetBSD__) && !defined(__FreeBSD__) && !defined(CYGWIN) && !defined(macosx) 
+#elif !defined(__NetBSD__) && !defined(__FreeBSD__) && !defined(CYGWIN) && !defined(macosx) && !defined(__DragonFly__)
 #include <values.h>
 #endif
 
