From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=f3HH=7J=inria.fr=Paul.Zimmermann@sourceware.org>
Received: from mail2-relais-roc.national.inria.fr (mail2-relais-roc.national.inria.fr [192.134.164.83])
	by sourceware.org (Postfix) with ESMTPS id ABD7A3858C53
	for <libc-alpha@sourceware.org>; Fri, 17 Mar 2023 09:17:51 +0000 (GMT)
DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org ABD7A3858C53
Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=inria.fr
Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=inria.fr
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
  d=inria.fr; s=dc;
  h=date:message-id:from:to:subject;
  bh=Um3HK8O97jHfuiW8KZZuDyLhnui6Usdx9bmPnqEMbN8=;
  b=tWk2xg4ggHZDvUXDPld6TlT52u4GINQNgIRk5MPzoMh0DqY9WzVwn2/j
   kIzJQB7hTG6X+wjaDh7JoMsAnsyvPcwL7ER4ntfvypvkmdlVHJPmCjB0t
   JnLM5IAlXg73TqFNePH7woWfYLftM77YeVApxqSd7vmN/vFco/KXqO4rw
   w=;
Authentication-Results: mail2-relais-roc.national.inria.fr; dkim=none (message not signed) header.i=none; spf=SoftFail smtp.mailfrom=Paul.Zimmermann@inria.fr; spf=None smtp.helo=postmaster@coriandre
Received-SPF: SoftFail (mail2-relais-roc.national.inria.fr:
  domain of Paul.Zimmermann@inria.fr is inclined to not
  designate 152.81.9.227 as permitted sender)
  identity=mailfrom; client-ip=152.81.9.227;
  receiver=mail2-relais-roc.national.inria.fr;
  envelope-from="Paul.Zimmermann@inria.fr";
  x-sender="Paul.Zimmermann@inria.fr"; x-conformance=spf_only;
  x-record-type="v=spf1"; x-record-text="v=spf1
  ip4:128.93.142.0/24 ip4:192.134.164.0/24 ip4:128.93.162.160
  ip4:89.107.174.7 mx ~all"
Received-SPF: None (mail2-relais-roc.national.inria.fr: no sender
  authenticity information available from domain of
  postmaster@coriandre) identity=helo; client-ip=152.81.9.227;
  receiver=mail2-relais-roc.national.inria.fr;
  envelope-from="Paul.Zimmermann@inria.fr";
  x-sender="postmaster@coriandre"; x-conformance=spf_only
X-IronPort-AV: E=Sophos;i="5.98,268,1673910000"; 
   d="scan'208";a="97715163"
Received: from coriandre.loria.fr (HELO coriandre) ([152.81.9.227])
  by mail2-relais-roc.national.inria.fr with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Mar 2023 10:17:50 +0100
Date: Fri, 17 Mar 2023 10:17:49 +0100
Message-Id: <p9u0lejvka82.fsf@coriandre.loria.fr>
From: Paul Zimmermann <Paul.Zimmermann@inria.fr>
To: libc-alpha@sourceware.org
Subject: building glibc 2.27 with gcc 12.2.0
X-Spam-Status: No, score=-2.7 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,KAM_NUMSUBJECT,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=no autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org
List-Id: <libc-alpha.sourceware.org>

       Hi,

for a scientific article I am writing with some colleagues, I need to build
glibc 2.27 with a recent version of gcc. (The reason is that glibc 2.27 is the
last version which contained the full MathLib correctly-rounded functions,
with the slow path.)

I am using this way to configure/build glibc 2.27:

$ tar xf glibc-2.27.tar.bz2
$ cd glibc-2.27
$ mkdir build
$ cd build
$ ../configure --prefix=/tmp CFLAGS="-Wno-error -O2 -fcommon" CC="gcc -no-pie"
$ make -j12

However the build fails with:

/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/../../../x86_64-linux-gnu/libselinux.so: undefined reference to `dlsym@GLIBC_2.34'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/../../../x86_64-linux-gnu/libselinux.so: undefined reference to `dlclose@GLIBC_2.34'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/../../../x86_64-linux-gnu/libselinux.so: undefined reference to `lstat64@GLIBC_2.33'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/../../../x86_64-linux-gnu/libselinux.so: undefined reference to `stat@GLIBC_2.33'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/../../../x86_64-linux-gnu/libselinux.so: undefined reference to `fstat@GLIBC_2.33'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/../../../x86_64-linux-gnu/libselinux.so: undefined reference to `lstat@GLIBC_2.33'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/../../../x86_64-linux-gnu/libselinux.so: undefined reference to `dlerror@GLIBC_2.34'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/../../../x86_64-linux-gnu/libselinux.so: undefined reference to `gettid@GLIBC_2.30'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/12/../../../x86_64-linux-gnu/libselinux.so: undefined reference to `dlopen@GLIBC_2.34'

Any idea how I can avoid this?

Thank you in advance,
Paul

PS: I am under Debian GNU/Linux bookworm/sid, on a Intel(R) Core(TM) i7-8700,
with gcc 12.2.0.