-WYLAND_PREFIX=`$PKG_CONFIG --variable=prefix wayland-client wayland-server`
-AC_PATH_PROG([WAYLAND_SCANNER], [wayland-scanner],, [${WAYLAND_PREFIX}/bin$PATH_SEPARATOR$PATH])
+# set the data dir for the tdm config
+DEFAULT_HAL_LIBDIR="/hal/lib"
+AC_ARG_WITH(hal-libdir, AS_HELP_STRING([--with-hal-libdir=PATH], [hal backend library path]),
+ [ HAL_LIBDIR="$withval" ],
+ [ HAL_LIBDIR="${DEFAULT_HAL_LIBDIR}" ])
+AC_DEFINE_UNQUOTED(HAL_LIBDIR, "${HAL_LIBDIR}", [Directory for hal backend library path])
+AC_SUBST(HAL_LIBDIR)