From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from zimbra.cs.ucla.edu (zimbra.cs.ucla.edu [131.179.128.68]) by sourceware.org (Postfix) with ESMTPS id D53963839C7D for ; Tue, 27 Jul 2021 23:38:48 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org D53963839C7D Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=cs.ucla.edu Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=cs.ucla.edu Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 5183716007D; Tue, 27 Jul 2021 16:38:47 -0700 (PDT) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id LFSqR9DrHNPb; Tue, 27 Jul 2021 16:38:46 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id A2C6B1600AF; Tue, 27 Jul 2021 16:38:46 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id FRbHZ_U07LZ0; Tue, 27 Jul 2021 16:38:46 -0700 (PDT) Received: from [192.168.1.9] (cpe-172-91-119-151.socal.res.rr.com [172.91.119.151]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 7504116007D; Tue, 27 Jul 2021 16:38:46 -0700 (PDT) Subject: Re: Undefined use of weak symbols in gnulib To: Florian Weimer , Joseph Myers Cc: Carlos O'Donell , libc-alpha@sourceware.org, bug-gnulib@gnu.org, Bruno Haible References: <87o8e0p92r.fsf@oldenburg.str.redhat.com> <1680226.UWtE2gOZdF@omega> <87a6piluow.fsf@oldenburg.str.redhat.com> <1882380.6EOZElgKgl@omega> <877dhbbjc8.fsf@oldenburg.str.redhat.com> From: Paul Eggert Organization: UCLA Computer Science Department Message-ID: <84fa7f6b-cb0a-8154-7153-b183423cbac0@cs.ucla.edu> Date: Tue, 27 Jul 2021 16:38:46 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <877dhbbjc8.fsf@oldenburg.str.redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-3.6 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS, NICE_REPLY_A, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 Jul 2021 23:38:49 -0000 On 7/27/21 1:19 PM, Florian Weimer wrote: >> So if there's any change regarding LIBPTHREAD_SO, I think the natural one >> would be to define it to LIBC_SO (I hope the dlopen/dlsym case works >> regardless of whether that change is made or not). > That is in an interesting idea. I like it. Me too. > It doesn't help with Bruno's use case, detecting the integrated > libpthread with the preprocessor. It might be good enough for that use case, if the detection of LIBPTHREAD_SO==LIBC_SO can be done at 'configure' time instead of at preprocessor time. (Bruno would be a better person to opine on this.)