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Subject: Re: [FEEDBACK] Issue with fd_set, FD_ZERO, FD_SET, FD_SETSIZE : Cygwin Content-Language: en-US To: cygwin@cygwin.com References: <36f2d54f-8515-42fb-e64c-86e348b8e902@cs.umass.edu> From: Yeo Kai Wei In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-TMN: [Ie5ZfuyypkhARgJ5tM7y86tA4SiDgWh6] X-ClientProxiedBy: PS2PR03CA0011.apcprd03.prod.outlook.com (2603:1096:300:5b::23) To SA1PR05MB9907.namprd05.prod.outlook.com (2603:10b6:806:337::13) X-Microsoft-Original-Message-ID: MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SA1PR05MB9907:EE_|MW4PR05MB8780:EE_ X-MS-Office365-Filtering-Correlation-Id: 70cf4ff2-d1b0-4485-c72d-08db08d8dd02 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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sct-15-20-4823-7-msonline-outlook-84f76.templateTenant X-MS-Exchange-CrossTenant-Network-Message-Id: 70cf4ff2-d1b0-4485-c72d-08db08d8dd02 X-MS-Exchange-CrossTenant-AuthSource: SA1PR05MB9907.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Feb 2023 06:59:32.1492 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR05MB8780 X-Spam-Status: No, score=1.6 required=5.0 tests=BAYES_00,BODY_8BITS,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_MUA_MOZILLA,FREEMAIL_FROM,NICE_REPLY_A,SPF_HELO_PASS,SPF_PASS,TXREP autolearn=no autolearn_force=no version=3.4.6 X-Spam-Level: * X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On 7/2/2023 1:53 pm, Brian Inglis wrote: > On 2023-02-06 21:28, Yeo Kai Wei via Cygwin wrote: >> On 7/2/2023 9:54 am, Eliot Moss wrote: >>> On 2/7/2023 11:34 AM, Yeo Kai Wei wrote: >>>> On 7/2/2023 7:27 am, Eliot Moss wrote: >>>>> On 2/7/2023 10:03 AM, Yeo Kai Wei via Cygwin wrote: >>>>>> On 7/2/2023 4:59 am, gs-cygwin.com@gluelogic.com wrote: >>>>>>> On Tue, Feb 07, 2023 at 04:33:53AM +0800, Yeo Kai Wei wrote: >>>>>> I updated Cygwin to 3.4.5-1.x86_64. >>>>>> $ uname -a >>>>>> CYGWIN_NT-10.0-19045 DESKTOP-P3E71RB 3.4.5-1.x86_64 2023-01-19 >>>>>> 19:09 UTC x86_64 Cygwin >>>>>> However, the same problem occurs. >>>>>> Cygwn-devel doesn't seem to work. >>>>>> $ gcc -o selectStdIn selectStdIn.c >>>>>> selectStdIn.c:9:10: fatal error: sys/select.h: No such file or >>>>>> directory >>>>>>   #include >>>>>>            ^~~~~~~~~~~~~~ >>>>>> compilation terminated. >>>>> Well, on my system cygcheck -f /usr/include/sys/select.h clearly says >>>>> that the file came from cygwin-devel-3.4.3-1.  Maybe you misspelled >>>>> cygwin-devel ?  You do have to select the package explicitly, too. >>>> I just reinstalled Cygwin but I'm unsure of what I missed. >>>> I did "cygcheck -f /usr/include/sys/select.h" and it seems to tell >>>> me that I do have cygwin-devel-3.4.5-1 >>>> Did I miss a step? >>> What gcc are you running?  Maybe not cygwin's? >> I think I'm running MinGW's gcc. >> I typed in "gcc --version" and this is what Cygwin returned. >> $ gcc --version >> gcc.exe (x86_64-posix-seh-rev0, Built by MinGW-W64 project) 8.1.0 >> Copyright (C) 2018 Free Software Foundation, Inc. >> This is free software; see the source for copying conditions. There >> is NO >> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR >> PURPOSE. >> What should I do next? > > If you choose to install cygwin-devel in Cygwin Setup, it will install > all the tools and files needed to develop under Cygwin, as well as > rebuild Cygwin itself and most of the components and packages. > > If you use the provided Desktop and Start Menu shortcuts to run bash > under mintty, or both under Cygwin/X, you should be able to work as if > under any Linux or similar distro. > > You must have the virtual Cygwin paths > /home/$USER/bin:/usr/bin:/bin:/usr/sbin:/sbin:... first in PATH and > similar /usr/share/{man,info,awk} /usr/lib/gawk for > {MAN,INFO,AWK,AWKLIB}PATH in your preferred shell initialization files > e.g. in bash $OSTYPE == "cygwin". Hi Brian, Thank you for the help. I think I found the issue, I believe it's due to MinGW's build of gcc (I could be wrong). I downloaded "gcc -core" and it worked.