| Peter Maydell | 189aea2 | 2016-07-26 17:31:05 +0100 | [diff] [blame] | 1 | dnl |
| 2 | dnl Copyright (c) Linux Test Project, 2016 |
| 3 | dnl |
| 4 | dnl This program is free software; you can redistribute it and/or modify |
| 5 | dnl it under the terms of the GNU General Public License as published by |
| 6 | dnl the Free Software Foundation; either version 2 of the License, or |
| 7 | dnl (at your option) any later version. |
| 8 | dnl |
| 9 | dnl This program is distributed in the hope that it will be useful, |
| 10 | dnl but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 12 | dnl the GNU General Public License for more details. |
| 13 | dnl |
| 14 | |
| 15 | AC_DEFUN([LTP_CHECK_BUILTIN_CLEAR_CACHE],[dnl |
| 16 | AC_MSG_CHECKING([for __builtin___clear_cache]) |
| 17 | AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
| 18 | int main(void) { |
| 19 | char arr[16]; |
| 20 | __builtin___clear_cache(arr, arr + sizeof(arr)); |
| 21 | return 0; |
| 22 | }]])],[has_bcc="yes"]) |
| 23 | |
| 24 | if 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) |
| 27 | else |
| 28 | AC_MSG_RESULT(no) |
| 29 | fi |
| 30 | ]) |