| dnl SPDX-License-Identifier: GPL-2.0-or-later | |
| dnl Copyright (c) Linux Test Project, 2016 | |
| AC_DEFUN([LTP_CHECK_BUILTIN_CLEAR_CACHE],[ | |
| AC_MSG_CHECKING([for __builtin___clear_cache]) | |
| AC_LINK_IFELSE([AC_LANG_SOURCE([[ | |
| int main(void) { | |
| char arr[16]; | |
| __builtin___clear_cache(arr, arr + sizeof(arr)); | |
| return 0; | |
| }]])],[has_bcc="yes"]) | |
| if test "x$has_bcc" = xyes; then | |
| AC_DEFINE(HAVE_BUILTIN_CLEAR_CACHE,1,[Define to 1 if you have __builtin___clear_cache]) | |
| AC_MSG_RESULT(yes) | |
| else | |
| AC_MSG_RESULT(no) | |
| fi | |
| ]) |