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