> Cc: emacs-devel@gnu.org, [EMAIL PROTECTED], [EMAIL PROTECTED] > From: "Jan D." <[EMAIL PROTECTED]> > Date: Wed, 13 Apr 2005 06:58:04 +0200 > > > But how do you check whether configure was invoked with `--without-x' > > from Lisp and from C? > > #ifndef HAVE_X_WINDOWS
Actually, I'd suggest #ifdef HAVE_WINDOW_SYSTEM because the latter will catch non-X windowed versions (e.g., MS-Windows) as well. Unless the code is in X-specific file, like xfns.c, where non-X toolkits are a non-issue. > You can check window-system in Lisp (it is nil), but it doesn't tell if > the running Emacs was configured with --without-x, only that it is > currently running without X. I.e. it could be emacs -nw, or simply > running without an X display. Does it make any difference? Yes, it makes a difference: Emacs compiled with --without-x cannot invoke code that calls X-specific primitives, because that would signal errors complaining about void functions. Emacs that does have X support but runs with -nw will silently do nothing when such code is invoked because (modulo bugs) these features are coded to do nothing when the required graphic display facilities are not available. _______________________________________________ Emacs-devel mailing list Emacs-devel@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-devel
