From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from NAM12-DM6-obe.outbound.protection.outlook.com (mail-dm6nam12on2119.outbound.protection.outlook.com [40.107.243.119]) by sourceware.org (Postfix) with ESMTPS id 2FF393857C4E for ; Sun, 11 Oct 2020 16:52:04 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 2FF393857C4E ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Q3lwpTZ5jo8gZikGDeFYz/Yq3ioKf2KK33yZFiOCOCVCkFIBxqT7kMt8c2yuJ6RUykLjcYAXGSCi0g+AiVGuwFg+5yWH2MAONUOdDBpswl+N0nEAMwjZu9p0RMeNpPemgFskspdfTRI6TguqmcxVLU2cvzin8xkwD1DR84j2I+d2dCUEMTr9HjmlAa+JN4SdwFYENeV0bWkEMmc7oas8/i0fLKQYjTQFUTnTH9ag4/JCkzhQGOUVZfjGDZCwlwY+0syI5TRbFquCJ7u3G9cwQx0oxhR4va2eOppL8C4VhD9Kx3pdV+nfq1H0mefxVCtIGRxXgbclHZqj9wI/i4gEZQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=Qg4xsBQUnvD+rKOQ8HzCdr8wiy5tpZ615NQM9PP1riE=; b=IXQ7m8IY+X39LXtkseTFGWJoYPMSLJeBZLI1Ds/8Ic+TwxuLpdCRFfYxAZMeh2h5ogzKQeSXFgbarn3jsAQqlzBxztMgk0mMPSm0DM+e4kyxYjl3SuIxgQ5tZ3Ed7dPgi0nNK+EIQq08xLrdCskTRMaiFRGtnMXCoC+ynlLORd0O9iwMf2oibTc4cMFDtTXSlsuxUqzMqdI1VuuFcRvd9chd5YXdiJAiDDADGRgsCuG+bEB5kW6WB4L6UmFQ9ruW72ixK0lHfCz4G48nXGqqzgjBoNeKUPyXInvIahBM7+HMTzpyIybXNDexw+YABAopDNW4vz/Z+F5bAibUjkPmCQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=cornell.edu; dmarc=pass action=none header.from=cornell.edu; dkim=pass header.d=cornell.edu; arc=none Received: from MN2PR04MB6176.namprd04.prod.outlook.com (2603:10b6:208:e3::13) by MN2PR04MB5487.namprd04.prod.outlook.com (2603:10b6:208:d5::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3455.26; Sun, 11 Oct 2020 16:52:02 +0000 Received: from MN2PR04MB6176.namprd04.prod.outlook.com ([fe80::c144:d206:c369:af44]) by MN2PR04MB6176.namprd04.prod.outlook.com ([fe80::c144:d206:c369:af44%7]) with mapi id 15.20.3455.028; Sun, 11 Oct 2020 16:52:02 +0000 Subject: Re: Build spends a long time in "mkimport". To: cygwin-developers@cygwin.com References: From: Ken Brown Message-ID: <6b379c79-727f-0164-3924-3bcae3ced0a6@cornell.edu> Date: Sun, 11 Oct 2020 12:52:02 -0400 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.1 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-Originating-IP: [2604:6000:b407:7f00:946b:663a:1a3:dfd2] X-ClientProxiedBy: BL1PR13CA0054.namprd13.prod.outlook.com (2603:10b6:208:257::29) To MN2PR04MB6176.namprd04.prod.outlook.com (2603:10b6:208:e3::13) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [IPv6:2604:6000:b407:7f00:946b:663a:1a3:dfd2] (2604:6000:b407:7f00:946b:663a:1a3:dfd2) by BL1PR13CA0054.namprd13.prod.outlook.com (2603:10b6:208:257::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.14 via Frontend Transport; Sun, 11 Oct 2020 16:52:02 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 7c3077d9-64c7-47d9-cece-08d86e05fa23 X-MS-TrafficTypeDiagnostic: MN2PR04MB5487: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6108; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: PGStCvIZ4jg4DgBPZh1gTqjQjCwWqD6URi9jFwN7ssx+XZ+cDZsr9hXBnIxP8nCIrVsa8pok0T53Q14CNROpGTJIE5+aHADuz5qSgBSQibUZM3+6vT28vbqoilVFmL3UXj+Mhx4Hufpm/eGPVr7pQng9+/R77RCSd+LW/DzDaRqw9lSJPy0kjKKYiti6YMOuInk3KYOuGGQgDEN5vZUbuJ/WTRPkdFDT4ME8d54qPBvG2rVLTt8luLA8/x5UdeXsdYoiMhkgQLK21GMqHFthi94MvlHCm8ReE05lVW6W3BZYSDrmugcBQY3Xq29B0fNpw+eq0xq+5Yz/R1eAWwMjEgMzApQRloWEXb7PeLUAWR3fHLCODhmJNMA7kGNOx5Qj X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:MN2PR04MB6176.namprd04.prod.outlook.com; PTR:; CAT:NONE; SFS:(4636009)(136003)(396003)(346002)(39860400002)(376002)(366004)(31686004)(2616005)(186003)(66556008)(66476007)(786003)(16526019)(75432002)(2906002)(52116002)(36756003)(86362001)(8676002)(31696002)(8936002)(6916009)(53546011)(316002)(6486002)(5660300002)(66946007)(478600001)(43740500002); DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: cornell.edu X-MS-Exchange-CrossTenant-Network-Message-Id: 7c3077d9-64c7-47d9-cece-08d86e05fa23 X-MS-Exchange-CrossTenant-AuthSource: MN2PR04MB6176.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Oct 2020 16:52:02.5666 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 5d7e4366-1b9b-45cf-8e79-b14b27df46e1 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: olhQm6CNG4rFg+VcWmuxW4232B+mkcle1pPCsqYtcfYVVwSKOJTiPnYGyR92vgM8c9Nut9ueIC+4kItTV/xeug== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR04MB5487 X-Spam-Status: No, score=0.1 required=5.0 tests=BAYES_00, DKIM_INVALID, DKIM_SIGNED, JMQ_SPF_NEUTRAL, KAM_DMARC_STATUS, MSGID_FROM_MTA_HEADER, NICE_REPLY_A, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_PASS, SPF_PASS, TXREP autolearn=no autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: cygwin-developers@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Cygwin core component developers mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 11 Oct 2020 16:52:06 -0000 On 10/11/2020 3:24 AM, Mark Geisert wrote: > Kaz Kylheku (Cygwin) via Cygwin wrote: >> Hi All, >> >> When building the Cygwin DLL, this single step takes almost ten minutes: >> >>    ../../.././winsup/cygwin/mkimport --cpu=i686 --ar=ar --as=as --nm=nm >> --objcopy=objcopy \ >>    --replace=atexit= --replace=timezone= --replace=uname=uname_x >> --replace=__xdrrec_getrec= >> >>    [ .. SNIP ... ] >> >>    --replace=truncate=_truncate64 libcygwin.a cygdll.a _cygwin_crt0_common.o \ >>    atexit.o cygwin_attach_dll.o cygwin_crt0.o dll_entry.o dll_main.o >> dso_handle.o \ >>    libcmain.o premain0.o premain1.o premain2.o premain3.o pseudo-reloc-dummy.o >> >> What's puzzling is that there is very CPU activity during this time. It's >> launching >> some objcopy commands. >> >> Is there some documentation that provides an overview of what exactly this does, >> other than studying its perl source code? >> >> Maybe it can be sped up? >> >> I'm going to have to cycle quite a few times on some changes, so this is >> frustrating. > > Hi Kaz, > I'm redirecting this to the cygwin-developers list as it's a Cygwin build issue. > Please follow up there. I don't have any insight into why mkimport takes so long. But the good news is that it doesn't run very often. Most changes to winsup/cygwin files don't trigger the mkimport command. Ken