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# physmem.m4 serial 12
dnl Copyright (C) 2002-2003, 2005-2006, 2008-2023 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],
[
# 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 sysinfo])
AC_CHECK_MEMBERS([struct sysinfo.mem_unit],,, [[#include <sys/sysinfo.h>]])
AC_REQUIRE([gl_SYS__SYSTEM_CONFIGURATION])
])
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