From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <dje.gcc@gmail.com>
Received: from mail-wr1-x435.google.com (mail-wr1-x435.google.com
 [IPv6:2a00:1450:4864:20::435])
 by sourceware.org (Postfix) with ESMTPS id 9FC123850406
 for <gcc@gcc.gnu.org>; Thu, 25 Feb 2021 22:46:08 +0000 (GMT)
DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 9FC123850406
Received: by mail-wr1-x435.google.com with SMTP id b18so308170wrn.6
 for <gcc@gcc.gnu.org>; Thu, 25 Feb 2021 14:46:08 -0800 (PST)
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=1e100.net; s=20161025;
 h=x-gm-message-state:mime-version:references:in-reply-to:from:date
 :message-id:subject:to:cc;
 bh=vq9w8SEtuf8j3WWDg1+IjZpwEwpHhR3fyT1YapY0ekk=;
 b=cYK6frpRcUJ8eAENfCIA2rvnUtQwXpyB+aA/+gTSLgxQaUpCkrqQJ2KQcNWHDYOY13
 MAbTXaW9UU+Xx/hnWgKondcEHnAP8WjvcxWjMqgE8FBeaGagTJ4os42NgV+IAsunjXf6
 ofWpT9LP1YQsDtJrEeiMzof9wFn3G6igwb4nDEGbRCk7wnlNwViCfl7KXMeSDmZZ1Xjz
 OoPC/+65FlIi7qIx26Z30dO8c/PWZSof8DiUow2McC/tziZn3+fdCwzdQ75YnqPZwRe+
 un4J861pKPivvvAX8mllMz0HUJsI17w3quEt5ZHzzlmifE32PRDKmPKQzkStOKIdirbe
 zjTA==
X-Gm-Message-State: AOAM532TBmy4mI0Mb3qoy9XqAtWwS8+HGctNiSpokYxqpx/0OsPQbmgI
 RImKb+miHqBdnLGfr3vsoAfDo2/3xCXtaO1vSP8=
X-Google-Smtp-Source: ABdhPJzEnPo1+1lHTWS2ahGeBYfN3fHOekhGl4ogARBzlO/H+Sw62qSBVVw+hHt9LYj6cAtIJmn/RhnwVQXj6QzkvL4=
X-Received: by 2002:a5d:6803:: with SMTP id w3mr189542wru.300.1614293167772;
 Thu, 25 Feb 2021 14:46:07 -0800 (PST)
MIME-Version: 1.0
References: <BYAPR01MB546484C6AB6FE197E08B4A92C69E9@BYAPR01MB5464.prod.exchangelabs.com>
In-Reply-To: <BYAPR01MB546484C6AB6FE197E08B4A92C69E9@BYAPR01MB5464.prod.exchangelabs.com>
From: David Edelsohn <dje.gcc@gmail.com>
Date: Thu, 25 Feb 2021 17:45:56 -0500
Message-ID: <CAGWvny=Row6uG33mwTBgZ6BDU2im=28qO2xun-jsQNUEpL_o6A@mail.gmail.com>
Subject: Re: What is pex_run
To: Gary Oblock <gary@amperecomputing.com>
Cc: "gcc@gcc.gnu.org" <gcc@gcc.gnu.org>
Content-Type: text/plain; charset="UTF-8"
X-Spam-Status: No, score=-2.4 required=5.0 tests=BAYES_00, DKIM_SIGNED,
 DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,
 SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2
X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on
 server2.sourceware.org
X-BeenThere: gcc@gcc.gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gcc mailing list <gcc.gcc.gnu.org>
List-Unsubscribe: <https://gcc.gnu.org/mailman/options/gcc>,
 <mailto:gcc-request@gcc.gnu.org?subject=unsubscribe>
List-Archive: <https://gcc.gnu.org/pipermail/gcc/>
List-Post: <mailto:gcc@gcc.gnu.org>
List-Help: <mailto:gcc-request@gcc.gnu.org?subject=help>
List-Subscribe: <https://gcc.gnu.org/mailman/listinfo/gcc>,
 <mailto:gcc-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Thu, 25 Feb 2021 22:46:10 -0000

On Thu, Feb 25, 2021 at 5:26 PM Gary Oblock via Gcc <gcc@gcc.gnu.org> wrote:
>
> I've got collect2 finding a linker error and I'm out of
> other options so I'm poking around in the collect2
> sources. I'm wondering what pex_run is (since it's
> getting handed the arguments this might mater?)
> I figure if I can get collect2 to spill its guts
> about what arguments are fed to "ld" I'll have
> at least a chance figuring out what in the bleep
> is going on... alternate debugging strategies
> are welcome.

collect2 will dump out a lot of extra information and save temporary
files if passed "-debug" option to collect2 (not to GCC).  In other
words

$ gcc -Wl,-debug -o foo foo.o

Thanks, David