Add MDM166A driver for Futaba/Targa USB VFD (Christoph Rasim).

configure.in

@@ -292,6 +292,29 @@ fi
 AC_SUBST(LIBFTDI_LIBS)
 AC_SUBST(LIBFTDI_CFLAGS)
 
+dnl ######################################################################
+dnl libhid support
+dnl ######################################################################
+AC_MSG_CHECKING([if libhid support has been enabled]);
+AC_ARG_ENABLE(libhid,
+	[AS_HELP_STRING([--disable-libhid],[disable HID support using libhid])],
+	[ if test "$enableval" != "no"; then
+		enable_libhid=yes
+	fi ],
+	[ enable_libhid=yes ]
+)
+AC_MSG_RESULT($enable_libhid) 
+
+if test "$enable_libhid" = "yes"; then
+	ifdef([PKG_CHECK_MODULES],
+	 	[PKG_CHECK_MODULES(LIBHID, libhid >= 0.2.16,
+			[AC_DEFINE(HAVE_LIBHID, [1], [Define to 1 if you have libhid])],
+			[ enable_libhid=no ])],
+		[AC_MSG_WARN([pkg-config not (fully) installed; drivers requiring libhid may not be built])])
+fi
+AC_SUBST(LIBHID_LIBS)
+AC_SUBST(LIBHID_CFLAGS)
+
 dnl ######################################################################
 dnl ethlcd support
 dnl ######################################################################