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Date:   Tue, 9 Jun 2020 12:34:45 -0300
From:   Arnaldo Carvalho de Melo <acme@kernel.org>
To:     Alexei Starovoitov <alexei.starovoitov@gmail.com>,
        Daniel Borkmann <daniel@iogearbox.net>,
        Andrii Nakryiko <andrii.nakryiko@gmail.com>
Cc:     Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Ian Rogers <irogers@google.com>,
        Namhyung Kim <namhyung@kernel.org>,
        Pekka Enberg <penberg@kernel.org>,
        Jiri Olsa <jolsa@kernel.org>,
        Irina Tirdea <irina.tirdea@intel.com>,
        bpf <bpf@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: [PATCH] libbpf: Define __WORDSIZE if not available
Message-ID: <20200609153445.GF24868@kernel.org>
References: <20200608161150.GA3073@kernel.org>
 <CAEf4BzbEcV6YaezP4yY8J=kYSBhh0cRHCvgCUe9xvB12mF08qg@mail.gmail.com>
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Some systems, such as Android, don't have a define for __WORDSIZE, do it
in terms of __SIZEOF_LONG__, as done in perf since 2012:

  http://git.kernel.org/torvalds/c/3f34f6c0233ae055b5

For reference: https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html

I build tested it here and Andrii did some Travis CI build tests too.

Acked-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>