OpenBSD, NetBSD and libusb-1.0

There is OpenBSD support in libusb.git. Since NetBSD and OpenBSD should have quite similar USB codes, I think that it should work under NetBSD as well.
Therefore I tried the following dirty patch to enable libusb-1.0 experimental support for NetBSD using the OpenBSD backend.
Take note FreeBSD has its own libusb-1.0 implementation which should be more mature than the OpenBSD backends of libusb-1.0 which is very recent.

diff --git a/configure.ac b/configure.ac
index ebbc107..71aad37 100644
--- a/configure.ac
+++ b/configure.ac
@@ -83,6 +83,17 @@ case $host in
       AC_CHECK_HEADERS([poll.h])
       AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])
       ;;
+*-netbsd*)
+       AC_DEFINE(OS_OPENBSD, 1, [OpenBSD backend])
+       AC_SUBST(OS_OPENBSD)
+       AC_MSG_RESULT([OpenBSD])
+       backend="openbsd"
+       threads="posix"
+       THREAD_CFLAGS="-pthread"
+       PC_LIBS_PRIVATE="-pthread"
+       AC_CHECK_HEADERS([poll.h])
+       AC_DEFINE([POLL_NFDS_TYPE],[nfds_t],[type of second poll() argument])
+       ;;
 *-mingw*)
       AC_MSG_RESULT([Windows])
       backend="windows"

And indeed it seems to work under NetBSD (tested with a NetBSD 5.1 VirtualBox VM under Mac OS X Lion)

localhost$ sudo ./listdevs
04d8:fa2e (bus 0, device 2)

I also tested libusb-pbatard's xusb example.

localhost$ sudo ./xusb -d 04d8:fa2e

Opening device...
speed: Unknown

Reading device descriptor:


Reading device descriptor:
           length: 18
     device class: 0
              S/N: 3
          VID:PID: 04D8:FA2E
        bcdDevice: 0001
  iMan:iProd:iSer: 1:2:3
         nb confs: 1

Reading configuration descriptors:
            nb interfaces: 1
             interface[0]: id = 0
interface[0].altsetting[0]: num endpoints = 2
  Class.SubClass.Protocol: 00.00.00
      endpoint[0].address: 01
          max packet size: 0020
         polling interval: 00
      endpoint[1].address: 81
          max packet size: 0020
         polling interval: 00
interface[0].altsetting[1]: num endpoints = 2
  Class.SubClass.Protocol: 00.00.00
      endpoint[0].address: 01
          max packet size: 0040
         polling interval: 00
      endpoint[1].address: 81
          max packet size: 0040
         polling interval: 00

Claiming interface 0...

Reading string descriptors:
  String (0x01): "Travis Robinson"
  String (0x02): "Benchmark Device"
  String (0x03): "LUSBW1"

Releasing interface 0...
Closing device...