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libbpf: make sure bpf headers are c++ include-able

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Wrap headers in extern "C", to turn off C++ mangling.
This simplifies including libbpf in c++ and linking against it.

v2 changes:
* do the same for btf.h

v3 changes:
* test_libbpf.cpp to test for possible future c++ breakages

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Stanislav Fomichev 2018-11-21 09:29:44 -08:00 • committed by Daniel Borkmann
parent 462c124c59
commit 8c4905b995
5 changed files with 56 additions and 3 deletions
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18
tools/lib/bpf/test_libbpf.cpp Normal file
View file

@ -0,0 +1,18 @@
/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
#include "libbpf.h"
#include "bpf.h"
#include "btf.h"
/* do nothing, just make sure we can link successfully */
int main(int argc, char *argv[])
{
/* libbpf.h */
libbpf_set_print(NULL, NULL, NULL);
/* bpf.h */
bpf_prog_get_fd_by_id(0);
/* btf.h */
btf__new(NULL, 0, NULL);
}