Re: AC_HELP_STRING Help

[Guido Draheim]

Bill Wendling schrieb:
> Hi all,
>
> I want to produce a help string like this:
>
>     --with-foo[=DIR]            Use the foo package
>
> (note the []s around the =DIR bit). When I use the option like this:
>
> AC_ARG_WITH([foo],
>             [AC_HELP_STRING([--with-foo[=DIR]],
>                             [Use the foo package])],,)
>
> It produces:
>
>     --with-foo=DIR            Use the foo package
>
> Is there a way to make it produce the []s that I want?

Have you been trying double-[[ and triple-[[[ pairings? That is
the normal way to pass literal "[" around and used widely
within m4/autoconf. It is needed for such simple things as
passing sed-char-ranges around (AC_X([sed -e `/[[0-9]].......)