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_SYNC_ADD_AND_FETCH],[dnl 16 AC_MSG_CHECKING([for __sync_add_and_fetch]) 17 AC_LINK_IFELSE([AC_LANG_SOURCE([ 18 int main(void) { 19 int i = 0; 20 return __sync_add_and_fetch(&i, 1); 21 }])],[has_saac="yes"]) 22 23 if test "x$has_saac" = xyes; then 24 AC_DEFINE(HAVE_SYNC_ADD_AND_FETCH,1,[Define to 1 if you have __sync_add_and_fetch]) 25 AC_MSG_RESULT(yes) 26 else 27 AC_MSG_RESULT(no) 28 fi 29 ]) 30
