[Bug-gnulib] Re: modules/{sysexits,poll}: syntax nits

[Jim Meyering]

Simon Josefsson <address@hidden> wrote:
> Jim Meyering <address@hidden> writes:
>> These changes make it so all of the modules files use the
>> same syntax for AC_SUBST'd variable names.
>> Anyone object?
>
> Not really, although the Autoconf manual only mention @FOO@ in
> relation to AC_SUBST, not $(FOO).

About 6 months ago, Alexandre Duret-Lutz mentioned somewhere that
we should now start using $(FOO) in place of the then-obsolete (but
still-supported) @FOO@ notation.

> I recall getting a warning in some
> version of some tool (can't recall the details, sorry) for using
> $(FOO) instead of @FOO@, but I haven't seen it lately.

Coreutils have had no problems since the switch back in April.
Maybe you were using some older version of automake?
The manual I use describes AC_SUBST like this
(without mention the @FOO@ notation):

  `AC_SUBST'
       The first argument is automatically defined as a variable in each
       generated `Makefile.in'.
       ...