Re: function-local variables in ltmain

[Gary V. Vaughan]

Hallo Ralf,

Ralf Wildenhues wrote:
> * Gary V. Vaughan wrote on Tue, Aug 16, 2005 at 04:06:38PM CEST:
>
> > Ralf Wildenhues wrote:
> > > This breaks `eval'.  
> >
> > I don't see how... 
>
> func_create_old_archive ()
> {
>    # for some reason (e.g. "interesting" archivers like `link -lib')
>    # we need to adapt old_deplibs, which is _LT_TAGVAR'ed.
>    local(old_deplibs, ...)
>    #...
>    func_execute_cmds "$old_archive_cmds"        # this uses `eval'
>    #...
>    endfunc
> }
>
> Now if I understand your proposal correctly, that just won't work then.
>
> Clear now?

Sure.  Seems we are talking past each other slightly.

Here is what I mean (untested btw, so quoting is almost certainly fubar):

# func(name)
# ----------
# Define function func_name.
m4_define([func],
[m4_define([lt_fcleanup])dnl
m4_define([lt_func_enum],
  [ifdef([lt_func_enum], [m4_incr(lt_func_enum)],
                         0)])dnl
[func_]$1[]dnl
])

# endfunc
# -------
m4_define([endfunc], [lt_fcleanup])

# local(variable, [value])
# ------------------------
# Define VARIABLE to be local to the current shell function.
m4_define([local],
[[local]]lt_func_enum[[_$1=$][$1]dnl
m4_if([$#], [2], [
    $1=$2])[]dnl
m4_append([lt_fcleanup], [
    $1=[$]local]lt_func_enum[_$1])dnl
])

...saving and restoring globals exactly as you propose, but using a less 
verbose system of ensuring uniqueness of the place holders.

Cheers,
        Gary.
--
Gary V. Vaughan      ())_.  address@hidden,gnu.org}
Research Scientist   ( '/   http://tkd.kicks-ass.net
GNU Hacker           / )=   http://www.gnu.org/software/libtool
Technical Author   `(_~)_   http://sources.redhat.com/autobook

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