[FEEDBACK] Issue with fd_set, FD_ZERO, FD_SET, FD_SETSIZE : Cygwin

[Yeo Kai Wei]

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 <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,
>>
>> 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?
>
> EM


Hi Eliot,

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?


Thank you.


Kind Regards,

YEO Kai Wei