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Date:	Tue, 7 Feb 2023 10:50:36 +1100
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Subject:	Re: [FEEDBACK] Issue with fd_set, FD_ZERO, FD_SET, FD_SETSIZE : Cygwin
To:	Yeo Kai Wei <yeokaiwei AT hotmail DOT com>, gs-cygwin DOT com AT gluelogic DOT com
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From:	Eliot Moss via Cygwin <cygwin AT cygwin DOT com>
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On 2/7/2023 10:48 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 DOT com AT gluelogic DOT 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 <sys/select.h>
>>>            ^~~~~~~~~~~~~~
>>> 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.
>>
>> EM
> 
> 
> Hi Eliot,
> 
> Thanks for the help.
> 
> There's probably some error somewhere.
> 
> I'll just uninstall the whole thing and reinstall from scratch.

Well, sometimes that's best, but between the other responses and mine,
I suspect you're not actually selecting and downloading cygwin-devel.

It could be problematic if you've installed cygwin in more than one
place, perhaps without realizing it ...  Pay attention to what the
cygwin root directory is for your installation :-) ...

Best - EM

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