-# physmem.m4 serial 1
-dnl Copyright (C) 2002 Free Software Foundation, Inc.
-dnl This file is free software, distributed under the terms of the GNU
-dnl General Public License. As a special exception to the GNU General
-dnl Public License, this file may be distributed as part of a program
-dnl that contains a configuration script generated by Autoconf, under
-dnl the same distribution terms as the rest of that program.
+# physmem.m4 serial 10
+dnl Copyright (C) 2002-2003, 2005-2006, 2008-2011 Free Software Foundation,
+dnl Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Check for the external symbol, _system_configuration,
+# a struct with member `physmem'.
+AC_DEFUN([gl_SYS__SYSTEM_CONFIGURATION],
+ [AC_CACHE_CHECK([for external symbol _system_configuration],
+ gl_cv_var__system_configuration,
+ [AC_LINK_IFELSE([AC_LANG_PROGRAM(
+ [[#include <sys/systemcfg.h>
+ ]],
+ [[double x = _system_configuration.physmem;
+ if (x > 0.0) return 0;]])],
+ [gl_cv_var__system_configuration=yes],
+ [gl_cv_var__system_configuration=no])])
+
+ if test $gl_cv_var__system_configuration = yes; then
+ AC_DEFINE([HAVE__SYSTEM_CONFIGURATION], [1],
+ [Define to 1 if you have the external variable,
+ _system_configuration with a member named physmem.])
+ fi
+ ]
+)
AC_DEFUN([gl_PHYSMEM],
[
- dnl Prerequisites of lib/physmem.c.
- AC_CHECK_HEADERS_ONCE(unistd.h)
- AC_CHECK_HEADERS(sys/pstat.h)
- AC_CHECK_FUNCS(pstat_getstatic pstat_getdynamic)
+ AC_LIBOBJ([physmem])
+
+ # Prerequisites of lib/physmem.c.
+ AC_CHECK_HEADERS([sys/pstat.h sys/sysmp.h sys/sysinfo.h \
+ machine/hal_sysinfo.h sys/table.h sys/param.h sys/systemcfg.h],,,
+ [AC_INCLUDES_DEFAULT])
+ dnl <sys/sysctl.h> requires <sys/param.h> on OpenBSD 4.0.
+ AC_CHECK_HEADERS([sys/sysctl.h],,,
+ [AC_INCLUDES_DEFAULT
+ #if HAVE_SYS_PARAM_H
+ # include <sys/param.h>
+ #endif
+ ])
+
+ AC_CHECK_FUNCS([pstat_getstatic pstat_getdynamic sysmp getsysinfo sysctl table])
+ AC_REQUIRE([gl_SYS__SYSTEM_CONFIGURATION])
])