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