When compiling I get an error saying: error: 'semtimedop' was not declared in this scope
I looked in /usr/include/sys/sem.h to see what compilation flags are needed, and it seems to me that there is an anomally there. In the excerpt from sem.h at the bootom, I have left the ifdefs and removed the code between them (faithfully, I hope) until the definition of semtimedop. As I understand it, it is impossible to reach the correct definition of semtimedop with arguments, since on the one hand it is under a global
Code:
#ifdef _INCLUDE_XOPEN_SOURCE
but on the other hand within this global ifdef it is under the else: of:
Code:
if defined(_INCLUDE_XOPEN_SOURCE) || defined(__LP64__)
This leaves me only with the definition of semtimedop as:
Code:
extern int semtimedop();
which does not please the compiler.
Am I wrong? What is the correct way to solve this?
Thank you,
Rimon
Edited excerpt from sem.h:
Code:
#ifdef _INCLUDE_XOPEN_SOURCE
# ifndef _NO_USER_PROTOS
# ifdef _PROTOTYPES
# if defined(_INCLUDE_XOPEN_SOURCE) || defined(__LP64__)
extern int semop(int, struct sembuf *, size_t);
# else /* not XOPEN_SOURCE or LP64 */
extern int semop(int, struct sembuf *, unsigned int);
# ifdef _INCLUDE_HPUX_SOURCE
extern int semtimedop(int, struct sembuf *, unsigned int, const struct timespec *);
# endif /* _INCLUDE_HPUX_SOURCE */
# endif /* not XOPEN_SOURCE or LP64 */
# else /* not _PROTOTYPES */
extern int semctl();
extern int semget();
extern int semop();
# ifdef _INCLUDE_HPUX_SOURCE
extern int semtimedop();
# endif /* _INCLUDE_HPUX_SOURCE */
# endif /* not _PROTOTYPES */
# ifdef __cplusplus
}
# endif /* __cplusplus */
# endif /* not _NO_USER_PROTOS */
#endif /* _INCLUDE_XOPEN_SOURCE */
The relevant portion of the code I am porting manages semphores between the threads in my application. The specific call which gives me the compliation error is:
Code:
rc = semtimedop(*sem_idp, sops, nsops, t_spec);
I tried the flags you mention but I'm afraid they don't solve the problem - I still get the compilation error.
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