2004-08-05 06:26:42 +08:00
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# boottime.m4 serial 2
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2002-07-17 18:47:46 +08:00
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# Determine whether this system has infrastructure for obtaining the boot time.
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2004-08-05 06:26:42 +08:00
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# Copyright (C) 1996, 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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2005-05-14 15:58:31 +08:00
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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2004-08-05 06:26:42 +08:00
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2002-07-17 18:47:46 +08:00
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# GNULIB_BOOT_TIME([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
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* ----------------------------------------------------------
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AC_DEFUN([GNULIB_BOOT_TIME],
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[
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AC_CHECK_FUNCS(sysctl)
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2004-08-05 06:26:42 +08:00
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AC_CHECK_HEADERS_ONCE(sys/param.h)
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AC_CHECK_HEADERS(sys/sysctl.h, [], [],
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[AC_INCLUDES_DEFAULT
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[#if HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif]])
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2002-07-17 18:47:46 +08:00
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AC_CACHE_CHECK(
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[whether we can get the system boot time],
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[gnulib_cv_have_boot_time],
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[
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AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[AC_INCLUDES_DEFAULT
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#if HAVE_SYSCTL && HAVE_SYS_SYSCTL_H
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2004-08-05 06:26:42 +08:00
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# if HAVE_SYS_PARAM_H
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# include <sys/param.h> /* needed for OpenBSD 3.0 */
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# endif
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2002-07-17 18:47:46 +08:00
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# include <sys/sysctl.h>
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#endif
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#ifdef HAVE_UTMPX_H
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# include <utmpx.h>
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#else
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# include <utmp.h>
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#endif
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],
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[[
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#if defined BOOT_TIME || (defined CTL_KERN && defined KERN_BOOTTIME)
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/* your system *does* have the infrastructure to determine boot time */
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#else
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please_tell_us_how_to_determine_boot_time_on_your_system
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#endif
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]])],
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gnulib_cv_have_boot_time=yes,
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gnulib_cv_have_boot_time=no)
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])
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AS_IF([test $gnulib_cv_have_boot_time = yes], [$1], [$2])
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])
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