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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [aclocal/] [sysv-ipc.m4] - Blame information for rev 578

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dnl
dnl $Id: sysv-ipc.m4,v 1.2 2001-09-27 11:59:11 chris Exp $
dnl
dnl Check for System V IPC calls used by Unix simulators
dnl
dnl 98/07/17 Dario Alcocer     alcocer@netcom.com
dnl          Ralf Corsepius    corsepiu@faw.uni-ulm.de
dnl
dnl Note: $host_os should probably *not* ever be used here to
dnl determine if host supports System V IPC calls, since some
dnl (e.g. FreeBSD 2.x) are configured by default to include only
dnl a subset of the System V IPC calls.  Therefore, to make sure
dnl all of the required calls are found, test for each call explicitly.
dnl
dnl All of the calls use IPC_PRIVATE, so tests will not unintentionally
dnl modify any existing key sets.  See the man pages for semget, shmget,
dnl msgget, semctl, shmctl and msgctl for details.
 
AC_DEFUN(RTEMS_UNION_SEMUN,
[
AC_CACHE_CHECK([whether $RTEMS_HOST defines union semun],
  rtems_cv_HAS_UNION_SEMUN,
  [AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/sem.h>],
[union semun arg ;],
[rtems_cv_HAS_UNION_SEMUN="yes"],
[rtems_cv_HAS_UNION_SEMUN="no"])
 
if test "$rtems_cv_HAS_UNION_SEMUN" = "yes"; then
    AC_DEFINE(HAS_UNION_SEMUN)
fi])
])
 
AC_DEFUN(RTEMS_SYSV_SEM,
[AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([RTEMS_CANONICAL_HOST])
AC_CACHE_CHECK(whether $RTEMS_HOST supports System V semaphores,
rtems_cv_sysv_sem,
[
AC_TRY_RUN(
[
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/sem.h>
#if !HAS_UNION_SEMUN
  union semun {
    int val;
    struct semid_ds *buf;
    ushort *array;
  } ;
#endif
int main () {
  union semun arg ;
 
  int id=semget(IPC_PRIVATE,1,IPC_CREAT|0400);
  if (id == -1)
    exit(1);
  arg.val = 0; /* avoid implicit type cast to union */
  if (semctl(id, 0, IPC_RMID, arg) == -1)
    exit(1);
  exit(0);
}
],
rtems_cv_sysv_sem="yes", rtems_cv_sysv_sem="no", :)
])
])
 
AC_DEFUN(RTEMS_SYSV_SHM,
[AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([RTEMS_CANONICAL_HOST])
AC_CACHE_CHECK(whether $RTEMS_HOST supports System V shared memory,
rtems_cv_sysv_shm,
[
AC_TRY_RUN([
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
int main () {
  int id=shmget(IPC_PRIVATE,1,IPC_CREAT|0400);
  if (id == -1)
    exit(1);
  if (shmctl(id, IPC_RMID, 0) == -1)
    exit(1);
  exit(0);
}
],
rtems_cv_sysv_shm="yes", rtems_cv_sysv_shm="no", :)
])
])
 
AC_DEFUN(RTEMS_SYSV_MSG,
[AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([RTEMS_CANONICAL_HOST])
AC_CACHE_CHECK(whether $RTEMS_HOST supports System V messages,
rtems_cv_sysv_msg,
[
AC_TRY_RUN([
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/msg.h>
int main () {
  int id=msgget(IPC_PRIVATE,IPC_CREAT|0400);
  if (id == -1)
    exit(1);
  if (msgctl(id, IPC_RMID, 0) == -1)
    exit(1);
  exit(0);
}
],
rtems_cv_sysv_msg="yes", rtems_cv_sysv_msg="no", :)
])
])
 
AC_DEFUN(RTEMS_CHECK_SYSV_UNIX,
[AC_REQUIRE([RTEMS_CANONICAL_HOST])
if test "$RTEMS_CPU" = "unix" ; then
  RTEMS_UNION_SEMUN
  RTEMS_SYSV_SEM
  if test "$rtems_cv_sysv_sem" != "yes" ; then
    AC_MSG_ERROR([System V semaphores don't work, required by simulator])
  fi
  RTEMS_SYSV_SHM
  if test "$rtems_cv_sysv_shm" != "yes" ; then
    AC_MSG_ERROR([System V shared memory doesn't work, required by simulator])
  fi
  RTEMS_SYSV_MSG
  if test "$rtems_cv_sysv_msg" != "yes" ; then
    AC_MSG_ERROR([System V messages don't work, required by simulator])
  fi
fi
])

Line No.	Rev	Author	Line
1	30	unneback	`dnl`
2			`dnl $Id: sysv-ipc.m4,v 1.2 2001-09-27 11:59:11 chris Exp $`
3			`dnl`
4			`dnl Check for System V IPC calls used by Unix simulators`
5			`dnl`
6			`dnl 98/07/17 Dario Alcocer alcocer@netcom.com`
7			`dnl Ralf Corsepius corsepiu@faw.uni-ulm.de`
8			`dnl`
9			`dnl Note: $host_os should probably not ever be used here to`
10			`dnl determine if host supports System V IPC calls, since some`
11			`dnl (e.g. FreeBSD 2.x) are configured by default to include only`
12			`dnl a subset of the System V IPC calls. Therefore, to make sure`
13			`dnl all of the required calls are found, test for each call explicitly.`
14			`dnl`
15			`dnl All of the calls use IPC_PRIVATE, so tests will not unintentionally`
16			`dnl modify any existing key sets. See the man pages for semget, shmget,`
17			`dnl msgget, semctl, shmctl and msgctl for details.`
18
19			`AC_DEFUN(RTEMS_UNION_SEMUN,`
20			`[`
21			`AC_CACHE_CHECK([whether $RTEMS_HOST defines union semun],`
22			`rtems_cv_HAS_UNION_SEMUN,`
23			`[AC_TRY_COMPILE([`
24			`#include <sys/types.h>`
25			`#include <sys/ipc.h>`
26			`#include <sys/sem.h>],`
27			`[union semun arg ;],`
28			`[rtems_cv_HAS_UNION_SEMUN="yes"],`
29			`[rtems_cv_HAS_UNION_SEMUN="no"])`
30
31			`if test "$rtems_cv_HAS_UNION_SEMUN" = "yes"; then`
32			`AC_DEFINE(HAS_UNION_SEMUN)`
33			`fi])`
34			`])`
35
36			`AC_DEFUN(RTEMS_SYSV_SEM,`
37			`[AC_REQUIRE([AC_PROG_CC])`
38			`AC_REQUIRE([RTEMS_CANONICAL_HOST])`
39			`AC_CACHE_CHECK(whether $RTEMS_HOST supports System V semaphores,`
40			`rtems_cv_sysv_sem,`
41			`[`
42			`AC_TRY_RUN(`
43			`[`
44			`#include <sys/types.h>`
45			`#include <sys/ipc.h>`
46			`#include <sys/sem.h>`
47			`#if !HAS_UNION_SEMUN`
48			`union semun {`
49			`int val;`
50			`struct semid_ds *buf;`
51			`ushort *array;`
52			`} ;`
53			`#endif`
54			`int main () {`
55			`union semun arg ;`
56
57			`int id=semget(IPC_PRIVATE,1,IPC_CREAT\|0400);`
58			`if (id == -1)`
59			`exit(1);`
60			`arg.val = 0; /* avoid implicit type cast to union */`
61			`if (semctl(id, 0, IPC_RMID, arg) == -1)`
62			`exit(1);`
63			`exit(0);`
64			`}`
65			`],`
66			`rtems_cv_sysv_sem="yes", rtems_cv_sysv_sem="no", :)`
67			`])`
68			`])`
69
70			`AC_DEFUN(RTEMS_SYSV_SHM,`
71			`[AC_REQUIRE([AC_PROG_CC])`
72			`AC_REQUIRE([RTEMS_CANONICAL_HOST])`
73			`AC_CACHE_CHECK(whether $RTEMS_HOST supports System V shared memory,`
74			`rtems_cv_sysv_shm,`
75			`[`
76			`AC_TRY_RUN([`
77			`#include <sys/types.h>`
78			`#include <sys/ipc.h>`
79			`#include <sys/shm.h>`
80			`int main () {`
81			`int id=shmget(IPC_PRIVATE,1,IPC_CREAT\|0400);`
82			`if (id == -1)`
83			`exit(1);`
84			`if (shmctl(id, IPC_RMID, 0) == -1)`
85			`exit(1);`
86			`exit(0);`
87			`}`
88			`],`
89			`rtems_cv_sysv_shm="yes", rtems_cv_sysv_shm="no", :)`
90			`])`
91			`])`
92
93			`AC_DEFUN(RTEMS_SYSV_MSG,`
94			`[AC_REQUIRE([AC_PROG_CC])`
95			`AC_REQUIRE([RTEMS_CANONICAL_HOST])`
96			`AC_CACHE_CHECK(whether $RTEMS_HOST supports System V messages,`
97			`rtems_cv_sysv_msg,`
98			`[`
99			`AC_TRY_RUN([`
100			`#include <sys/types.h>`
101			`#include <sys/ipc.h>`
102			`#include <sys/msg.h>`
103			`int main () {`
104			`int id=msgget(IPC_PRIVATE,IPC_CREAT\|0400);`
105			`if (id == -1)`
106			`exit(1);`
107			`if (msgctl(id, IPC_RMID, 0) == -1)`
108			`exit(1);`
109			`exit(0);`
110			`}`
111			`],`
112			`rtems_cv_sysv_msg="yes", rtems_cv_sysv_msg="no", :)`
113			`])`
114			`])`
115
116			`AC_DEFUN(RTEMS_CHECK_SYSV_UNIX,`
117			`[AC_REQUIRE([RTEMS_CANONICAL_HOST])`
118			`if test "$RTEMS_CPU" = "unix" ; then`
119			`RTEMS_UNION_SEMUN`
120			`RTEMS_SYSV_SEM`
121			`if test "$rtems_cv_sysv_sem" != "yes" ; then`
122			`AC_MSG_ERROR([System V semaphores don't work, required by simulator])`
123			`fi`
124			`RTEMS_SYSV_SHM`
125			`if test "$rtems_cv_sysv_shm" != "yes" ; then`
126			`AC_MSG_ERROR([System V shared memory doesn't work, required by simulator])`
127			`fi`
128			`RTEMS_SYSV_MSG`
129			`if test "$rtems_cv_sysv_msg" != "yes" ; then`
130			`AC_MSG_ERROR([System V messages don't work, required by simulator])`
131			`fi`
132			`fi`
133			`])`

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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [aclocal/] [sysv-ipc.m4] - Blame information for rev 578