From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ed1-x535.google.com (mail-ed1-x535.google.com [IPv6:2a00:1450:4864:20::535]) by sourceware.org (Postfix) with ESMTPS id 17B563858D33 for ; Sun, 24 Mar 2024 18:52:45 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 17B563858D33 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 17B563858D33 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=2a00:1450:4864:20::535 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1711306366; cv=none; b=vMeuIF5RPnRerix1TM+Xf5nsCnSJBzU9OhQcYR0XBVnRs8Q/+YSjPzSgBEj1JoZ3vJzEHr1zBHfvmBsLODJ0f4X8Guj7zckq1jnLmdS997m+SX2Sj0EW1A2a3shv7yPTFXEOPJdLhh6gjqYGsCX+dJJa3fVJqyeFiyMwdB4O8ek= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1711306366; c=relaxed/simple; bh=P5is/APPSthTvbjG1bOKOzU7pWazylhmAu5xjUSTODY=; h=DKIM-Signature:MIME-Version:From:Date:Message-ID:Subject:To; b=WwjLJKYaoXQ6jw8aqz6+FKB/M9sPjlCVMUIpMDyXGG4lqpcvrvbyGRof7rUvxtrJ38gdPKO3Sa3kNfGa7rNCPPSSDIuKeYaLUm0avLSbScyxXnmzML34cBr+Hrpe1RgfcFFHdYdC8iSvYcxTtfMoYwR/FYboGdMJfl0UjSoseoQ= ARC-Authentication-Results: i=1; server2.sourceware.org Received: by mail-ed1-x535.google.com with SMTP id 4fb4d7f45d1cf-56845954ffeso4887313a12.2 for ; Sun, 24 Mar 2024 11:52:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1711306364; x=1711911164; darn=gcc.gnu.org; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=P5is/APPSthTvbjG1bOKOzU7pWazylhmAu5xjUSTODY=; b=LweutRGquT6LeT2UBibhsk2vRJpLvU+lZQ1ymKa0M2e/34iasDY7epli7f1RCHMw2Y WpbFiSfO+9K7hOq7SMJxwps5EbTfmxXWDy4ebdbq3Cfqf8qpN0GMtDl09+GS1S/EDS7Y Y6NY9O2HyrdVaqZVBgA04aJBktBLZCypcTgSg35DBeCvD/wKnFl7l8k3JlwYPAaiqHVg +umpyZmmkbh6PmGB+29V5hBSecg/K179sKzYxSxbIibmogcYXQn5EAKW0Cl/9aDH4op8 YVZoSRZIo9+yxEd0B+y1pbUcTMJ3WccSQ9xGGzbWBcg4SCmYyqLVEjmucF8FuxpBaLvE SlSg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1711306364; x=1711911164; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=P5is/APPSthTvbjG1bOKOzU7pWazylhmAu5xjUSTODY=; b=kODlWT5zc7xK8lTaLzphzJ5/AhcAkDepi7yh2Re3qYi9SppX0hac1VGNeLWhYP2H9v tll3eg5MpY4r3pCDM7UE6vBIfN9ynXbSgm1QGKYMhUazCYsc9P9S8NRJ0rFhsixfUTaB QBKrqrTPkDLFrknoSBph57fcWyhtfTe3hxA9+vTuc79xi/jQ4lTo2WzoTRLngj/f/fAc kO3DyDY2YMzPDlvK1EbTi8+kwse5KjCxKYryjihFZoUbvrGi5va4g30UQ1TYWJKBdwJW mUHjYvpwbSF3Q4ziQ+YQ5FV19WU0PK3in/qo79Scky4bGOoc89l8odu11h5QpLDp05ai 9pmw== X-Gm-Message-State: AOJu0YxlikDQIzTodXd83UBwHQiogvKAmThI1BWtlr0v0i5gy8EJ405R s2ZazOmi9hM/Yio1RQa6i8xwqZgrpI8VncOpRErAO3yDaqUiOs72Mpdb1dp3NaYa04M2dVsObiY lj+04XK8yIKME2D9/D+p44njitQGWy2t89TVA X-Google-Smtp-Source: AGHT+IHNW9TFhpEsJsB2vih8QwUK54sfoB5Pt8u37CaIukdq6s3qkcTKQaaGkuhK5+FlhKMpeQOHm7M0N+SRz0uDsFk= X-Received: by 2002:a50:cd01:0:b0:566:348:fc4a with SMTP id z1-20020a50cd01000000b005660348fc4amr2911502edi.32.1711306363500; Sun, 24 Mar 2024 11:52:43 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Yuri Kanivetsky Date: Sun, 24 Mar 2024 20:52:31 +0200 Message-ID: Subject: Re: Is --as-needed the default these days? To: Jonathan Wakely Cc: "gcc@gcc.gnu.org" Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-0.5 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=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: > That's a linker option, and the linker is not part of GCC. Any change in linker behaviour is not because of a change in GCC. Have you noticed what gcc does? 3.4: /usr/libexec/gcc/x86_64-alpine-linux-musl/5.3.0/collect2 ... -lintl 3.5: /usr/libexec/gcc/x86_64-alpine-linux-musl/6.2.1/collect2 ... --as-needed ... -lintl collect2 is supposedly part of GCC. And what passes --as-needed is supposedly gcc. I was told on IRC that generally --as-needed is not the default. For the linker I guess. Although I wasn't able to confirm it. The option is supposedly defined here: https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=ld/lexsup.c;h=dad3b6059edfe1fe31f46c454fdc90d55b0aed5b;hb=ec6f962151998434f9cc743386f2a49a1ce1a0f6#l295 But I don't see the default value, and where it's used. And also it looks like gcc started to pass --as-needed to the linker since 5.x/6.x. Am I missing something? > The GNU linker can be configured to default to --as-needed or not, and different distros use different defaults. Can you tell me briefly how it's configured? Is there a config? Regards, Yuri