1dnl
2dnl Copyright (c) Linux Test Project, 2016
3dnl
4dnl This program is free software;  you can redistribute it and/or modify
5dnl it under the terms of the GNU General Public License as published by
6dnl the Free Software Foundation; either version 2 of the License, or
7dnl (at your option) any later version.
8dnl
9dnl This program is distributed in the hope that it will be useful,
10dnl but WITHOUT ANY WARRANTY;  without even the implied warranty of
11dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
12dnl the GNU General Public License for more details.
13dnl
14
15AC_DEFUN([LTP_CHECK_BUILTIN_CLEAR_CACHE],[dnl
16	AC_MSG_CHECKING([for __builtin___clear_cache])
17	AC_LINK_IFELSE([AC_LANG_SOURCE([[
18int main(void) {
19	char arr[16];
20	__builtin___clear_cache(arr, arr + sizeof(arr));
21        return 0;
22}]])],[has_bcc="yes"])
23
24if test "x$has_bcc" = xyes; then
25	AC_DEFINE(HAVE_BUILTIN_CLEAR_CACHE,1,[Define to 1 if you have __builtin___clear_cache])
26	AC_MSG_RESULT(yes)
27else
28	AC_MSG_RESULT(no)
29fi
30])
31