patch libIPC @osx 10.8.2

gistfile1.txt

$ gcc --version
i686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
Copyright (C) 2007 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.

$ sw_vers
ProductName:  Mac OS X
ProductVersion:	10.8.2
BuildVersion:	12C60

Makefile

# Nom du repertoire ou generer la libIPC
REP        = ../lib
 
# Nom du fichier a generer :
#                                                       <---
 
LIBRAIRIE = $(REP)/libIPC.a
 
# Fichiers C necessaires a la compilation :
#                                                       <---
CFILES    = shmem.c sem.c
 
#                                                       <-
INCDIR    =  -iquote 
 
# Fichiers objets :
#                                                       <
CFLAGS    = $(GFLAGS) $(INCDIR) -Wall 
OFILES    = $(CFILES:.c=.o)
CC        = gcc
 
$(LIBRAIRIE) : $(OFILES)
	@echo "Building $@ ... "
	ar r $@ $(OFILES); ranlib $@
	@echo "$@ done"
 
clean:;         rm -f $(OFILES) $(LIBRAIRIE) core
 
sem.o: sem.c
	$(CC) -c sem.c $(CFLAGS)
shmem.o: shmem.c
	$(CC) -c shmem.c $(CFLAGS)
 
 

sem.c

/*
 * sem.c
 *
 * 2001  Pierre Sens (Pierre.Sens@lip6.fr)
 *
 * Fonction de manipulation de semaphores
 *
 */



#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/sem.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>

//#if defined(__GNU_LIBRARY__) && !defined(_SEM_SEMUN_UNDEFINED)
//     /* union semun is defined by including <sys/sem.h> */
//#else
//     /* according to X/OPEN we have to define it ourselves */
//union semun {
//   int val;                    /* value for SETVAL */
//   struct semid_ds *buf;       /* buffer for IPC_STAT, IPC_SET */
//   unsigned short int *array;  /* array for GETALL, SETALL */
//   struct seminfo *__buf;      /* buffer for IPC_INFO */
//#endif

int semid;
struct sembuf operation;
union semun arg;
 
int creer_sem(int nbsem)
{
  int flags = 0666 | IPC_CREAT;
  
  return (semid=semget(IPC_PRIVATE, nbsem, flags)); 
}
 
int init_sem(ushort *argvect)
{
  arg.array = argvect;
  return semctl(semid, 1, SETALL, arg);
}
 
int init_un_sem(int semnum, ushort argsem)
{
  arg.val = argsem;
  return semctl(semid, semnum, SETVAL, arg);
}
 
int det_sem()
{
  return semctl(semid, 1, IPC_RMID, arg);
}
 
void P(int sem)
{
  operation.sem_num=sem;
  operation.sem_op = -1;
  /* operation.sem_flg=SEM_UNDO;*/
  if (semop(semid,&operation,1)) {
    perror("Erreur dans P");
    exit(1);
  }
}
 
void V(int sem)
{
  operation.sem_num=sem;
  operation.sem_op = 1;
  /* operation.sem_flg=SEM_UNDO;*/
  if (semop(semid,&operation,1)) {
    perror("Erreur dans V");
    exit(1);
  }
}