Re: Compiling No Gnus for XEmacs

[Robert Pluim <rpluim@gmail.com>]

Katsumi Yamaoka <yamaoka@jpl.org> writes:

> Robert Pluim wrote:
>> Lars Magne Ingebrigtsen <larsi@gnus.org> writes:
> [...]
>>> I'm unable to reproduce that.  It seems to work for me...
>
>> On further investigation, I now see why this happens. I bet you have
>> your packages installed in /usr/local/share/xemacs, right? I have mine
>> under ~/.xemacs, putting them in /usr/local solves it.
>
> But why does it do the trick?
> Because of the -no-autoloads option, XEmacs doesn't know the module
> from which to get `defadvice'.  For it dgnushack.el provides the
> autoload:
>
>     (unless (fboundp 'defadvice)
>       (autoload 'defadvice "advice" nil nil 'macro))
>
> Even with that if XEmacs fails in loading advice.elc, it will mean
> there's no such module in the `load-path' directories.  I got
> (in Windows Vista):
>
> $ xemacs -batch -no-autoloads -eval '(message "%s" (locate-library "advice"))'
> /usr/share/xemacs/xemacs-packages/lisp/xemacs-base/advice.elc
>
> I can hardly imagine why the behavior changes by changing the
> installation directory.

It's because of the way XEmacs has early- and non-early package
paths. ~/.xemacs is where the early packages are searched for, and
-no-autoloads suppresses looking there, but does not suppress looking in
the other package paths, hence moving the files to /usr/local/ makes
things work again.

Robert