From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id D7B40385734F; Thu, 13 Apr 2023 16:21:28 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org D7B40385734F DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1681402888; bh=l6xgwsIyfpGUk4LusZwMNtdS9/Pl0NxAdCJOpvpBxLg=; h=From:To:Subject:Date:In-Reply-To:References:From; b=v4ZmLdILmE1zLp7WeA46tPRhh4EgFnHHVSaZ50o7gGvMDm8OMGWnmYubMZDMHQp7g 7kQpyl1Fso5WfQQePHrdGwNyUAMGzVq805xcIFm1iez7Lh6MB91j7svopRajqnaz8q mny9i3riMj2Sgk7hqTNMdXwWXCVlMAaJTSBGGYjc= From: "allan.w.macdonald at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug preprocessor/109183] [regression?] since GCC 11.1, -MM -MMD generates "a-" prefixed dependency files Date: Thu, 13 Apr 2023 16:21:28 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: preprocessor X-Bugzilla-Version: unknown X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: allan.w.macdonald at gmail dot com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 List-Id: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109183 --- Comment #8 from Allan W. Macdonald = --- (In reply to Andrew Pinski from comment #7) > Does using -c instead help? Why would we want to compile the file without FIRST checking for dependenci= es?=20=20 The .d file needs to be up to date so that an included makefile rule can ch= eck for any changes in the files listed in each .d file before the target file = is compiled.=