| #!/usr/bin/m4 |
| # |
| # Copyright (c) 2015-2017 Dmitry V. Levin <ldv@altlinux.org> |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions |
| # are met: |
| # 1. Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # 2. Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # 3. The name of the author may not be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| AC_DEFUN([st_CHECK_UNION_BPF_ATTR],[ |
| |
| pushdef([ATTR_NAME], translit([$1], [a-z], [A-Z])) |
| pushdef([attr_text], [union bpf_attr.][$1]) |
| pushdef([have_attr], [st_cv_member_union_bpf_attr_][$1]) |
| |
| AC_CACHE_CHECK([whether attr_text initialization works], |
| [have_attr], |
| [AC_COMPILE_IFELSE( |
| [AC_LANG_PROGRAM([[#include <linux/bpf.h>]], |
| [union bpf_attr a = { .$1 = 0 };])], |
| [have_attr=yes], |
| [have_attr=no])]) |
| |
| if test $have_attr = yes; then |
| AC_DEFINE([HAVE_UNION_BPF_ATTR_]ATTR_NAME, [1], |
| [Define to 1 if attr_text initialization works]) |
| fi |
| |
| popdef([have_attr]) |
| popdef([attr_text]) |
| popdef([ATTR_NAME]) |
| ]) |