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Date:   Wed, 9 Sep 2020 09:12:39 +0100
From:   Quentin Monnet <>
To:     Andrii Nakryiko <>
Cc:     Alexei Starovoitov <>,
        Daniel Borkmann <>,
        bpf <>, Networking <>
Subject: Re: [PATCH bpf-next 0/2] bpf: detect build errors for man pages for
 bpftool and eBPF helpers

On 09/09/2020 04:48, Andrii Nakryiko wrote:
> On Mon, Sep 7, 2020 at 9:40 AM Quentin Monnet <> wrote:
>> This set aims at improving the checks for building bpftool's documentation
>> (including the man page for eBPF helper functions). The first patch lowers
>> the log-level from rst2man and fix the reported informational messages. The
>> second one extends the script used to build bpftool in the eBPF selftests,
>> so that we also check a documentation build.
>> This is after a suggestion from Andrii Nakryiko.
>> Quentin Monnet (2):
>>   tools: bpftool: log info-level messages when building bpftool man
>>     pages
>>   selftests, bpftool: add bpftool (and eBPF helpers) documentation build
>>  tools/bpf/bpftool/Documentation/Makefile      |  2 +-
>>  .../bpf/bpftool/Documentation/bpftool-btf.rst |  3 +++
>>  .../bpf/bpftool/Documentation/bpftool-gen.rst |  4 ++++
>>  .../bpf/bpftool/Documentation/bpftool-map.rst |  3 +++
>>  .../selftests/bpf/       | 23 +++++++++++++++++++
>>  5 files changed, 34 insertions(+), 1 deletion(-)
>> --
>> 2.25.1
> Acked-by: Andrii Nakryiko <>
> But this still won't be run every time someone makes selftests. We do
> build bpftool during selftests build, so it would be good to run doc
> build there as well to ensure everyone is executing this. But this is
> a good first step for sure.

I see, indeed with this patch we would only build the doc on "make
run_tests", not when building the selftests. I'll send another version
that builds the doc at the same time as we build bpftool then.

I also had another look at rst2man's options, and there's probably
cleaner a way to get rid of the stderr redirection/line counting that
I'm doing in this version. I'll fix that too.

Thanks for the feedback.

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