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Re: [PATCH] Avoid invoking ranlib on libbackend.a

From: Richard Biener <richard dot guenther at gmail dot com>
To: Jakub Jelinek <jakub at redhat dot com>
Cc: Segher Boessenkool <segher at kernel dot crashing dot org>, Michael Matz <matz at suse dot de>, Patrick Palka <patrick at parcs dot ath dot cx>, David Edelsohn <dje dot gcc at gmail dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Mon, 18 Jul 2016 14:44:28 +0200
Subject: Re: [PATCH] Avoid invoking ranlib on libbackend.a
Authentication-results: sourceware.org; auth=none
References: <CAGWvnykjLnNXrF8fGeXxsyUc_PsNW6Tqj03Bfjghs1Kdr+t96w@mail.gmail.com> <CA+C-WL8tMVH06ywKeMZgsGk2sYGFtJat+LT76C26OrDsO-tw_Q@mail.gmail.com> <CAGWvnykmGwi_j-oDeLBwLNL5BA+Uh=FOZT3JvH0-tOCi3DWSaA@mail.gmail.com> <alpine.DEB.2.20.13.1607172140000.1419@idea> <20160718113511.GA32392@gate.crashing.org> <CAFiYyc1W8R4iZqOxz3N8UAfz5xKSS79VmwDGWh2UfA5Xz7G7sA@mail.gmail.com> <20160718123704.GB7387@tucnak.redhat.com>

On Mon, Jul 18, 2016 at 2:37 PM, Jakub Jelinek <jakub@redhat.com> wrote:
> On Mon, Jul 18, 2016 at 02:32:40PM +0200, Richard Biener wrote:
>> While eliding ranlib sounds like a no-brainer the real benefit (I/O wise) is
>> when you get rid of the archive or save link time by creating a (partially)
>> linked DSO.  ISTR Michael Matz has patches to do that.  Whether it's
>
> DSO?  Then we'd have to build everything with -fpic (which we only do when
> building gccjit).  Did you mean just a relocatable object (ld -r) instead?

I think his patches do a DSO (and yes, add -fpic).  But a relocatable object
is also possible of course (not sure if libtool provides support for creating
such a beast portably).

Richard.

>         Jakub

References:
- Re: [PATCH] Avoid invoking ranlib on libbackend.a
  - From: David Edelsohn
- Re: [PATCH] Avoid invoking ranlib on libbackend.a
  - From: Patrick Palka
- Re: [PATCH] Avoid invoking ranlib on libbackend.a
  - From: David Edelsohn
- Re: [PATCH] Avoid invoking ranlib on libbackend.a
  - From: Patrick Palka
- Re: [PATCH] Avoid invoking ranlib on libbackend.a
  - From: Segher Boessenkool
- Re: [PATCH] Avoid invoking ranlib on libbackend.a
  - From: Richard Biener
- Re: [PATCH] Avoid invoking ranlib on libbackend.a
  - From: Jakub Jelinek

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