--- configure.in.orig	2008-05-07 19:24:31.000000000 -0400
+++ configure.in	2009-03-14 00:14:25.000000000 -0400
@@ -446,6 +446,9 @@ if test "x$with_libpci" != xno ; then
 fi 
 AM_CONDITIONAL([HAVE_LIBPCI], [test "x$USE_LIBPCI" = "xyes"])
 
+USE_LIBUSB20=no
+USE_LIBUSB=no
+LIBUSB20_LIBS=""
 AC_ARG_WITH([backend],
 	    AS_HELP_STRING([--with-backend=<name>],
 	                   [backend to use (linux/solaris/freebsd/dummy)]),
@@ -473,6 +476,22 @@ AM_CONDITIONAL(HALD_COMPILE_LINUX, [test
 AM_CONDITIONAL(HALD_COMPILE_FREEBSD, [test x$HALD_BACKEND = xfreebsd], [Compiling for FreeBSD])
 AM_CONDITIONAL(HALD_COMPILE_SOLARIS, [test x$HALD_BACKEND = xsolaris], [Compiling for Solaris])
 AC_SUBST(HALD_BACKEND)
+if test "x$HALD_BACKEND" = "xfreebsd"; then
+    AC_CHECK_LIB([usb20], [libusb20_dev_get_info], [USE_LIBUSB20=yes], [USE_LIBUSB20=no])
+fi
+if test "x$USE_LIBUSB20" = "xno"; then
+    AC_CHECK_LIB([usb], [libusb20_dev_get_info], [USE_LIBUSB=yes], [USE_LIBUSB=no])
+fi
+AM_CONDITIONAL([HAVE_LIBUSB20],[test "x$USE_LIBUSB20" = "xyes"])
+AM_CONDITIONAL([HAVE_LIBUSB20],[test "x$USE_LIBUSB" = "xyes"])
+if test "x$USE_LIBUSB20" = "xyes"; then
+    AC_DEFINE(HAVE_LIBUSB20, 1, [Set if we need libusb20])
+    LIBUSB20_LIBS="-lusb20"
+elif test "x$USE_LIBUSB" = "xyes"; then
+    AC_DEFINE(HAVE_LIBUSB20, 1, [Set if we need libsub20])
+    LIBUSB20_LIBS="-lusb"
+fi
+AC_SUBST(LIBUSB20_LIBS)
 
 dnl DBUS API is subject to changes
 AC_DEFINE_UNQUOTED(DBUS_API_SUBJECT_TO_CHANGE, [], [DBUS API is subject to change])