On 2/7/2023 3:28 PM, Yeo Kai Wei 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....@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?

Install the relevant gcc and program building packages.
But I think you're reaching the limit of the handholding
the community may be prepared to offer ...

Also, you never said what you're *really* trying to
accomplish.

EM

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