AC_DEFUN([LX_ENABLE_GUI],
[
  AC_ARG_ENABLE([gui],
AS_HELP_STRING([--enable-gui], [build the GUI])
AS_HELP_STRING([--disable-gui], [do not build the GUI @<:@default@:>@]),
         [], [enable_gui=no])

  AC_MSG_CHECKING([whether to build the GUI])
  if test x"$enable_gui" != x"no"; then
      AC_MSG_RESULT([yes])
  else
      AC_MSG_RESULT([no])
  fi
  if test x"$enable_gui" != x"no"; then
    PKG_CHECK_MODULES([GTK], [libgnomecanvasmm-2.6 >= 2.6.0])
  fi
  AM_CONDITIONAL([WANT_GUI], [test x"$enable_gui" != x"no"])
])