# Copyright (C) 2001-2024 Zabbix SIA
#
# This program is free software: you can redistribute it and/or modify it under the terms of
# the GNU Affero General Public License as published by the Free Software Foundation, version 3.
#
# This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License along with this program.
# If not, see <https://www.gnu.org/licenses/>.
#
# TIMES_CHECK_NULL_ARG
#
#   Checks if times function can be called with NULL argument and sets TIMES_SUPPORTS_NULL_ARG if true
#

AC_DEFUN([TIMES_TRY_RUN],
[
	AC_RUN_IFELSE(
	[
		AC_LANG_SOURCE(
		#include <sys/times.h>
		#include <stdlib.h>

		int	main()
		{
			
			if((clock_t)-1 == times(NULL))
				return 1;

			return 0;
		}
		)
	]
	,
	test_times_null_arg="yes",
	test_times_null_arg="no",
	test_times_null_arg="no" dnl action-if-cross-compiling
	)
])

AC_DEFUN([TIMES_CHECK_NULL_ARG],
[
	AC_MSG_CHECKING(if 'times' function supports null argument)
	
	TIMES_TRY_RUN([no])

	if test "x$test_times_null_arg" = "xyes"; then
		AC_DEFINE([TIMES_NULL_ARG], 1, [Define to 1 if 'times' function supports NULL argument])
		AC_MSG_RESULT(yes)
	else
		AC_MSG_RESULT(no)
	fi
])dnl