2000-09-14 Ralf Corsepius <corsepiu@faw.uni-ulm.de>

	* macros: New directory.
	* macros/bsp-alias.m4: new file.
	* macros/canonical-host.m4: new file.
	* macros/canonical-target-name.m4: new file.
	* macros/canonicalize-tools.m4: new file.
	* macros/check-bsp-cache.m4: new file.
	* macros/check-bsps.m4: new file.
	* macros/check-cpu.m4: new file.
	* macros/rtems-debug.m4: new file.
	* macros/check-cxx.m4: new file.
	* macros/check-itron.m4: new file.
	* macros/check-multiprocessing.m4: new file.
	* macros/check-networking.m4: new file.
	* macros/check-newlib.m4: new file.
	* macros/check-posix.m4: new file.
	* macros/check-rdbg.m4: new file.
	* macros/enable-bare.m4: new file.
	* macros/enable-cxx.m4: new file.
	* macros/enable-gcc28.m4: new file.
	* macros/enable-inlines.m4: new file.
	* macros/enable-itron.m4: new file.
	* macros/enable-libcdir.m4: new file.
	* macros/enable-multiprocessing.m4: new file.
	* macros/enable-networking.m4: new file.
	* macros/enable-posix.m4: new file.
	* macros/enable-rdbg.m4: new file.
	* macros/enable-rtemsbsp.m4: new file.
	* macros/enable-tests.m4: new file.
	* macros/gcc-pipe.m4: new file.
	* macros/gcc-specs.m4: new file.
	* macros/i386-gas-code16.m4: new file.
	* macros/path-ksh.m4: new file.
	* macros/path-perl.m4: new file.
	* macros/prog-cc.m4: new file.
	* macros/prog-cxx.m4: new file.
	* macros/project-root.m4: new file.
	* macros/rtems-top.m4: new file.
	* macros/sysv-ipc.m4: new file.
	* macros/target.m4: new file.
	* macros/rtems-test-no-pause.m4: new file.
	* macros/multilib.m4: new file.
	* macros/tool-paths.m4: new file.
	* macros/tool-prefix.m4: new file.

1 files changed, 133 insertions, 0 deletions

diff --git a/macros/sysv-ipc.m4 b/macros/sysv-ipc.m4
new file mode 100644
index 0000000000..883921e2c8
--- /dev/null
+++ b/macros/sysv-ipc.m4
@@ -0,0 +1,133 @@
+dnl
+dnl $Id$
+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
+])