--- libusb-0.1.3b/configure.orig	Sat Jan 13 21:17:45 2001
+++ libusb-0.1.3b/configure	Tue May  8 08:47:40 2001
@@ -1605,7 +1605,7 @@ EOF
     os_support=linux
     echo "$ac_t""Linux" 1>&6
     ;;
-  *-freebsd*)
+  *-freebsd*|*-netbsd*|*-openbsd*)
     cat >> confdefs.h <<\EOF
 #define FREEBSD 1
 EOF