diff -r f14a67a35bec tools/check/check_brctl
--- a/tools/check/check_brctl	Thu Oct 12 17:53:51 2006 +0100
+++ b/tools/check/check_brctl	Thu Oct 12 10:17:33 2006 +0200
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 # CHECK-INSTALL
 
 function error {
@@ -7,4 +7,18 @@ function error {
    exit 1
 }
 
-which brctl 1>/dev/null 2>&1 || error
+
+case ${OS} in
+OpenBSD|NetBSD|FreeBSD)
+	# These systems have a bridge builtin
+	which brconfig 1>/dev/null 2>&1 || error
+	;;
+Linux)
+	which brctl 1>/dev/null 2>&1 || error
+	;;
+*)
+	echo "Unknown OS" && error
+	;;
+esac
+
+exit 0
diff -r f14a67a35bec tools/check/check_iproute
--- a/tools/check/check_iproute	Thu Oct 12 17:53:51 2006 +0100
+++ b/tools/check/check_iproute	Thu Oct 12 10:17:33 2006 +0200
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 # CHECK-INSTALL
 
 function error {
@@ -7,5 +7,16 @@ function error {
    exit 1
 }
 
-ip addr list 1>/dev/null 2>&1 || error
+case ${OS} in
+OpenBSD|NetBSD|FreeBSD)
+	ifconfig -a 1>/dev/null 2>&1 || error
+	;;
+Linux)
+	ip addr list 1>/dev/null 2>&1 || error
+	;;
+*)
+	echo "Unknown OS" && error
+	;;
+esac
 
+exit 0	
diff -r f14a67a35bec tools/check/check_python
--- a/tools/check/check_python	Thu Oct 12 17:53:51 2006 +0100
+++ b/tools/check/check_python	Thu Oct 12 10:17:33 2006 +0200
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 # CHECK-BUILD CHECK-INSTALL
 
 function error {
diff -r f14a67a35bec tools/check/check_zlib_devel
--- a/tools/check/check_zlib_devel	Thu Oct 12 17:53:51 2006 +0100
+++ b/tools/check/check_zlib_devel	Thu Oct 12 10:17:33 2006 +0200
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 # CHECK-BUILD
 
 function error {
diff -r f14a67a35bec tools/check/check_zlib_lib
--- a/tools/check/check_zlib_lib	Thu Oct 12 17:53:51 2006 +0100
+++ b/tools/check/check_zlib_lib	Thu Oct 12 10:17:33 2006 +0200
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 # CHECK-BUILD CHECK-INSTALL
 
 function error {
@@ -8,4 +8,4 @@ function error {
 }
 
 set -e
-ldconfig -p | grep -q libz.so || error
+ldconfig -v 2>&1 | grep -q libz.so || error
diff -r f14a67a35bec tools/check/chk
--- a/tools/check/chk	Thu Oct 12 17:53:51 2006 +0100
+++ b/tools/check/chk	Thu Oct 12 10:17:33 2006 +0200
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 function usage {
     echo "Usage:"
@@ -13,6 +13,7 @@ function usage {
 }
 
 export PATH=${PATH}:/sbin:/usr/sbin
+export OS=`uname -s`
 
 case $1 in
     build)