public inbox for gcc-rust@gcc.gnu.org
 help / color / mirror / Atom feed
From: Mark Wielaard <mark@klomp.org>
To: Philip Herron <philip.herron@embecosm.com>
Cc: gcc-rust@gcc.gnu.org
Subject: Re: [PATCH] More rustspec.cc cleanups
Date: Sat, 7 Aug 2021 01:08:38 +0200	[thread overview]
Message-ID: <YQ3A9u95cfAe4ieo@wildebeest.org> (raw)
In-Reply-To: <9ebd75fa-b14a-b224-93a9-e8f4f0363672@embecosm.com>

Hi Philip,

On Fri, Aug 06, 2021 at 03:58:24PM +0100, Philip Herron wrote:
> Great patch, this file has been neglected. This is now being merged
> https://github.com/Rust-GCC/gccrs/pull/610
> 
> Its not 100% clear but is the compiler driver here automatically adding
> in -lc or is it simply checking if it saw_libc?

It does pass -lc (if not saw_libc).  You can see what is invoked with
which arguments using -v (e.g. gcc/gccrs -B gcc -v foobar.rs).

One of the things we are using is the crt1.o startup code, which
provides the _start symbol and which relies on libc (in particular
__libc_start_main and abort).

The patch wasn't really meant to change how we currently do
assembling, linking and startup. But just to remove those parts that
were unnecessary because they were go specific.

Cheers,

Mark


  reply	other threads:[~2021-08-06 23:08 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-05 23:34 Mark Wielaard
2021-08-06 14:58 ` Philip Herron
2021-08-06 23:08   ` Mark Wielaard [this message]
2021-08-08 11:48     ` Philip Herron

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=YQ3A9u95cfAe4ieo@wildebeest.org \
    --to=mark@klomp.org \
    --cc=gcc-rust@gcc.gnu.org \
    --cc=philip.herron@embecosm.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).