$OpenBSD: patch-src_common_c,v 1.1 2011/05/21 11:19:24 fgsch Exp $
--- src/common.c.orig	Mon May  9 09:14:48 2011
+++ src/common.c	Mon May  9 09:33:03 2011
@@ -31,6 +31,7 @@
 #define isHex(c) (hexToInt(c) != -1)
 #define HEX_BASE 16
 
+#if !defined(__OpenBSD__)
 int get_ram_size(void) {
 	FILE *fp;
 	char str[256];
@@ -52,6 +53,20 @@ int get_ram_size(void) {
 	fclose(fp);
 	return ret;
 }
+#else
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+int get_ram_size(void) {
+	int mib[2] = { CTL_HW, HW_PHYSMEM };
+	unsigned int physmem;
+	size_t len = sizeof(physmem);
+
+	if (sysctl(mib, 2, &physmem, &len, NULL, 0) < 0)
+		return -1;
+	return (physmem / 1024);
+}
+#endif
 
 /* Return the version number */
 char * getVersion(char * progname, int maj, int min, int submin, int svnrev, int beta, int rc)