[ipc] semtimedop undeclared

[Mehdi Rabah]

Hi,

I'm trying to compile a linux project with cygwin. There is a file
which use IPC and include all the necessary files

#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/sem.h>
#include <sys/time.h>


but still, I have this error at compile time:

error: `semtimedop' undeclared (first use this function)

what can I do about this ?

Regards,
--
Mehdi Rabah

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