GNU bug report logs - #45849
Autoconf options and dependencies

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Jeffrey Walton <noloader <at> gmail.com>
To: bug-grep <at> gnu.org
Subject: Autoconf options and dependencies
Date: 2021年1月13日 19:05:02 -0500

Hi Everyone,
I noticed Grep offers these two autoconf options (and friends):
 --with-libiconv-prefix
 --with-libintl-prefix
Configure does not complain when they are used.
However, when I check link dependencies with ldd:
 $ ldd /usr/local/bin/grep
 linux-vdso.so.1
 libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3
 libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
 libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6
 /lib64/ld-linux-x86-64.so.2
There seems to be no iConv dependencies, but there does seem to be
PCRE dependencies. (It may be time to bump to PCRE2 since PCRE is
end-of-life and the sources have some undefined behavior present).
If I use --with-libpcre-prefix, then I get an autoconf warning:
 WARNING: unrecognized options: --with-libpcre-prefix
It looks like something is a bit sideways.
Jef

Message #8 received at 45849 <at> debbugs.gnu.org (full text, mbox):

From: Jim Meyering <jim <at> meyering.net>
To: Jeffrey Walton <noloader <at> gmail.com>
Cc: 45849 <at> debbugs.gnu.org
Subject: Re: bug#45849: Autoconf options and dependencies
Date: 2021年1月14日 08:36:51 -0800

On Thu, Jan 14, 2021 at 6:29 AM Jeffrey Walton <noloader <at> gmail.com> wrote:
> I noticed Grep offers these two autoconf options (and friends):
>
> --with-libiconv-prefix
> --with-libintl-prefix
>
> Configure does not complain when they are used.
>
> However, when I check link dependencies with ldd:
>
> $ ldd /usr/local/bin/grep
> linux-vdso.so.1
> libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3
> libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
> libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6
> /lib64/ld-linux-x86-64.so.2
>
> There seems to be no iConv dependencies, but there does seem to be
> PCRE dependencies. (It may be time to bump to PCRE2 since PCRE is
> end-of-life and the sources have some undefined behavior present).
>
> If I use --with-libpcre-prefix, then I get an autoconf warning:
>
> WARNING: unrecognized options: --with-libpcre-prefix
>
> It looks like something is a bit sideways.
Hi Jeffrey,
Thanks for investigating. I haven't looked at the
--with-libiconv-prefix or --with-libintl-prefix issues, but PCRE2
(overdue, indeed) is on our radar. I expect that the switch to it will
happen soon. That may serve as impetus for the next release.

Message #11 received at 45849 <at> debbugs.gnu.org (full text, mbox):

From: Jim Meyering <jim <at> meyering.net>
To: Jeffrey Walton <noloader <at> gmail.com>
Cc: 45849 <at> debbugs.gnu.org
Subject: Re: bug#45849: Autoconf options and dependencies
Date: Fri, 6 Aug 2021 22:27:27 -0700

On Thu, Jan 14, 2021 at 8:36 AM Jim Meyering <jim <at> meyering.net> wrote:
> On Thu, Jan 14, 2021 at 6:29 AM Jeffrey Walton <noloader <at> gmail.com> wrote:
> > I noticed Grep offers these two autoconf options (and friends):
> >
> > --with-libiconv-prefix
> > --with-libintl-prefix
> >
> > Configure does not complain when they are used.
> >
> > However, when I check link dependencies with ldd:
> >
> > $ ldd /usr/local/bin/grep
> > linux-vdso.so.1
> > libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3
> > libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
> > libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6
> > /lib64/ld-linux-x86-64.so.2
> >
> > There seems to be no iConv dependencies, but there does seem to be
> > PCRE dependencies. (It may be time to bump to PCRE2 since PCRE is
> > end-of-life and the sources have some undefined behavior present).
> >
> > If I use --with-libpcre-prefix, then I get an autoconf warning:
> >
> > WARNING: unrecognized options: --with-libpcre-prefix
> >
> > It looks like something is a bit sideways.
>
> Hi Jeffrey,
>
> Thanks for investigating. I haven't looked at the
> --with-libiconv-prefix or --with-libintl-prefix issues, but PCRE2
> (overdue, indeed) is on our radar. I expect that the switch to it will
> happen soon. That may serve as impetus for the next release.
Actually, PCRE2 is no longer an immediate priority.
The cost/value ratio seems too high for now, so unless someone else
does the work it's unlikely to change.

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