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b=C/gN3FsnybeaT/rhfOkwu44qeJPiKM6k+noRhRNMw4CPOYw3dTphAXZQPXmYGOhz61Xso47qAK0rsA1WtR7HgX+A/f9hYh3vxyN74GCcKwGDzn/RO8cJMCTxsEcHEG6O+ldaQot9TybtxxTH1J03Nv7ncc8J3KocQtdvOTt6yOQ= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=cornell.edu; Received: from SA0PR04MB7322.namprd04.prod.outlook.com (2603:10b6:806:e2::7) by DM5PR04MB0923.namprd04.prod.outlook.com (2603:10b6:4:40::38) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6086.21; Mon, 20 Feb 2023 17:14:27 +0000 Received: from SA0PR04MB7322.namprd04.prod.outlook.com ([fe80::317b:fc3c:1a1b:db7]) by SA0PR04MB7322.namprd04.prod.outlook.com ([fe80::317b:fc3c:1a1b:db7%9]) with mapi id 15.20.6111.020; Mon, 20 Feb 2023 17:14:27 +0000 Message-ID: <39257fa6-df12-41d0-57fa-e26113a8efc6@cornell.edu> Date: Mon, 20 Feb 2023 12:14:23 -0500 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Subject: Re: Heads up: Problems with parallel make Content-Language: en-US To: cygwin-apps@cygwin.com References: <9c9fb865-5f11-67ec-81a5-9c1ee37b5ee1@cornell.edu> <871214fe-aa00-5c51-7145-82737e830fcc@Shaw.ca> <6c9c801e-7ec6-5093-afd7-8111fc4692a3@Shaw.ca> <6876bcc9-3747-1a7e-bab8-c89ba7a39cc8@cornell.edu> <4891b215-8bbc-431a-db83-f2c980538ffd@gmail.com> <87o7poxof0.fsf@Rainer.invalid> From: Ken Brown In-Reply-To: <87o7poxof0.fsf@Rainer.invalid> Content-Type: text/plain; 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As expected, that fixes the problem for my test case >> (building TeX Live). Obviously it would be better if the make >> developers would provide a configure option to use a pipe for the >> jobserver, but this is a good workaround if they don't. > > Does it actually do a parallel build? I've quickly tested a cmake based > project with it and it completely serializes the build. Reverting to > 4.4 resolves that problem. It does for my build of TeX Live. I just tried 'make -j13 check', and I saw many make processes and many sh processes running at once. [But I'm currently testing a self-built make 4.4.0.91.] Ken