--- trunk/OOPSE-3.0/ac-tools/configure.in	2005/01/14 20:09:26	1946
+++ trunk/OOPSE-3.0/ac-tools/configure.in	2005/02/15 15:17:01	2029
@@ -115,8 +115,20 @@ dnl check for system getopt
 AC_SUBST(F90_MODULE_NAMES)
 AC_LANG_POP
 
-dnl check for system getopt
 AC_LANG_PUSH(C)
+AC_CHECK_HEADERS(unistd.h sys/pstat.h sys/sysmp.h sys/sysinfo.h sys/table.h sys/param.h sys/sysctl.h sys/sytemcfg.h machine/hal_sysinfo.h)
+AC_CHECK_FUNCS(pstat_getstatic sysmp getsysinfo sysctl table)
+# special check for _system_configuration because AIX <4.3.2 do not
+# contain the `physmem' member.
+AC_MSG_CHECKING([for external symbol _system_configuration])
+AC_TRY_COMPILE([#include <sys/systemcfg.h>],
+               [double x = _system_configuration.physmem;],
+  [AC_MSG_RESULT([yes])
+  AC_DEFINE(HAVE__SYSTEM_CONFIGURATION, 1,
+            [Define if you have the _system_configuration variable.])],
+  [AC_MSG_RESULT([no])])
+
+dnl check for system getopt
 adl_FUNC_GETOPT_LONG
 
 dnl check for strong optimization options
@@ -143,8 +155,42 @@ fi
   AC_CACHE_SAVE
   exit 1
 fi
+
+AC_PATH_PROG(PS, ps)
+AC_CACHE_CHECK([for POSIX or BSD ps syntax], ac_cv_prog_ps_syntax, [
+	if $PS ax -o rss > /dev/null 2>&1; then
+		ac_cv_prog_ps_ax=yes
+	else
+		ac_cv_prog_ps_ax=no
+	fi
+	if $PS -ef -o rss > /dev/null 2>&1; then
+		ac_cv_prog_ps_ef=yes
+	else
+		ac_cv_prog_ps_ef=no
+	fi
+	if test "$ac_cv_prog_ps_ax" = yes; then
+		ac_cv_prog_ps_syntax=BSD
+        else
+		if test "$ac_cv_prog_ps_ef" = yes; then
+			ac_cv_prog_ps_syntax=POSIX
+		else
+			AC_MSG_ERROR(Could not determine ps syntax)
+		fi
+	fi
+])
 
+AC_DEFINE_UNQUOTED(PSCOMMAND, $PS, [Path to ps program])
 
+if test "$ac_cv_prog_ps_syntax" = BSD; then
+  AC_DEFINE(PSTYPE_IS_BSD, 1)
+else
+   if test "$ac_cv_prog_ps_syntax" = POSIX; then
+       AC_DEFINE(PSTYPE_IS_POSIX, 1)
+   else
+       AC_MSG_ERROR(Unknown ps syntax type!)
+   fi
+fi
+
 AC_ARG_WITH(mpi,
     	[AC_HELP_STRING([--with-mpi=<prefix>],
 		[compile with MPI installed in <prefix> [default=no]])],