diff -urN a/configure.in b/configure.in
--- a/configure.in    2012-11-26 14:59:05.084788496 +0100
+++ b/configure.in    2012-11-26 14:59:21.665316347 +0100
@@ -19,6 +19,7 @@
  else
     AC_MSG_ERROR([*** libusb-config not found. You need a working 
libusb installation.])
  fi
+LIBS=""

  dnl check for version of libusb