$NetBSD: patch-ab,v 1.2 2017/06/23 19:13:15 kamil Exp $

--- src/mem.c.orig	2005-08-10 07:06:16.000000000 +0000
+++ src/mem.c
@@ -7,10 +7,12 @@
 #include <sys/fcntl.h>
 #include <stdio.h>
 #include <unistd.h>
-#if !__linux__
+#if !defined(__linux__)
+#if defined(__FreeBSD__) || defined(__DragonFly__)
 #include <sys/user.h>
+#endif
 #include <kvm.h>
-#if __FreeBSD__ || __APPLE__
+#if defined(__FreeBSD__) || defined(__APPLE__) || defined(__DragonFly__)
 #define KVM_NO_FILES O_RDONLY
 #endif
 #endif
@@ -26,7 +28,7 @@ mem_get_value()
 {
 	long total=0;
 
-#if __linux__
+#if defined(__linux__)
 	FILE *fd;
 	char var[1024];
 	long val,memtotal,memfree;
@@ -56,7 +58,7 @@ mem_get_value()
 	total*=1024;
 
 #else
-#if __FreeBSD__ || __APPLE__
+#if defined(__FreeBSD__) || defined(__APPLE__) || defined(__DragonFly__)
 	printf("Not yet supported on FreeBSD.\n");
 	exit(1);
 #else