From patchwork Mon Nov 15 19:07:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Florian Weimer X-Patchwork-Id: 47718 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 391F33857823 for ; Mon, 15 Nov 2021 19:08:25 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 391F33857823 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1637003305; bh=SNGLLGzMCEx7/0OFkUcaBbZJHBAtbYnHOQ53ZZlKwzw=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:From; b=XQgrpRz4U873dzF3Di3FkRRcRsm1gyUyjylSUUQXp3ygGAvjY+4WcNI8jpzRK6iRW zA2p+wqrYN5EsQHoAPbdtkshYkB7XUvRF/2z9CA7RiknRuiLngaanrRDPpcVG2DkHY xuonN2N7w45USbi8m5rglyixq3TjVrSZPt/umR+A= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by sourceware.org (Postfix) with ESMTPS id D2E0D3858405 for ; Mon, 15 Nov 2021 19:08:03 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org D2E0D3858405 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-500-lkG-ipMqO6GEFZqIBCdWJA-1; Mon, 15 Nov 2021 14:08:01 -0500 X-MC-Unique: lkG-ipMqO6GEFZqIBCdWJA-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id DB03A8015BA for ; Mon, 15 Nov 2021 19:08:00 +0000 (UTC) Received: from oldenburg.str.redhat.com (unknown [10.39.194.81]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 3EBA05C1A1 for ; Mon, 15 Nov 2021 19:08:00 +0000 (UTC) To: libc-alpha@sourceware.org Subject: [PATCH v2] elf: Install a symbolic link to ld.so as /usr/bin/ld.so Date: Mon, 15 Nov 2021 20:07:58 +0100 Message-ID: <87a6i5fd9t.fsf@oldenburg.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-Spam-Status: No, score=-12.7 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_NONE, 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-Patchwork-Original-From: Florian Weimer via Libc-alpha From: Florian Weimer Reply-To: Florian Weimer Errors-To: libc-alpha-bounces+patchwork=sourceware.org@sourceware.org Sender: "Libc-alpha" This makes ld.so features such as --preload, --audit, and --list-diagnostics more accessible to end users because they do not need to know the ABI name of the dynamic loader. --- v2: Use $(make-link). NEWS | 4 ++++ elf/Makefile | 7 ++++++- 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/NEWS b/NEWS index f10971b180..2f56f3db28 100644 --- a/NEWS +++ b/NEWS @@ -68,6 +68,10 @@ Major new features: to be used by compilers for optimizing usage of 'memcmp' when its return value is only used for its boolean status. +* A symbolic link to the dynamic linker is now installed under + /usr/bin/ld.so (or ${bindir}/ld.so if glibc is not configured with + --prefix=/usr). + Deprecated and removed features, and other changes affecting compatibility: * The r_version update in the debugger interface makes the glibc binary diff --git a/elf/Makefile b/elf/Makefile index 72004484db..06cfde778c 100644 --- a/elf/Makefile +++ b/elf/Makefile @@ -110,7 +110,7 @@ endif ifeq (yes,$(build-shared)) extra-objs = $(all-rtld-routines:%=%.os) sofini.os interp.os generated += librtld.os dl-allobjs.os ld.so ldd -install-others = $(inst_rtlddir)/$(rtld-installed-name) +install-others = $(inst_rtlddir)/$(rtld-installed-name) $(inst_bindir)/ld.so install-bin-script = ldd endif @@ -682,6 +682,11 @@ $(inst_rtlddir)/$(rtld-installed-name): $(objpfx)ld.so $(+force) $(make-target-directory) $(do-install-program) +# Creates the relative /usr/bin/ld.so symbolic link. +$(inst_bindir)/ld.so: $(inst_rtlddir)/$(rtld-installed-name) + $(make-target-directory) + $(make-link) + # Special target called by parent to install just the dynamic linker. .PHONY: ldso_install ldso_install: $(inst_rtlddir)/$(rtld-installed-name)