netdev - Re: [PATCH v1] samples/bpf: Add a .gitignore for binaries

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Message-ID: <1ce3f092-3552-173f-b26a-48ec81d49f55@gmail.com>
Date:   Thu, 18 May 2017 13:03:31 -0700
From:   David Ahern <dsahern@...il.com>
To:     Alexander Alemayhu <alexander@...mayhu.com>
Cc:     Mickaël Salaün <mic@...ikod.net>,
        Alexei Starovoitov <ast@...com>,
        Daniel Borkmann <daniel@...earbox.net>,
        linux-kernel@...r.kernel.org,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Wang Nan <wangnan0@...wei.com>, netdev@...r.kernel.org
Subject: Re: [PATCH v1] samples/bpf: Add a .gitignore for binaries

On 5/17/17 1:18 AM, Alexander Alemayhu wrote:
> I have looked into this but found it to be not easy and all attempts to
> change the Makefile has resulted in obscure errors :/
> 
> Getting clang to output in a different directory was easy[0], but I guess
> this is not the right approach either. Have you tried making the change?

spent an hour so a few weeks back. It is not trivial, but someone needs
to find to fix it now.

perf is the example to use: you can build it from both top level kernel
directory (e.g, make -C tools/perf O=/tmp/perf) and the perf directory
(cd tools/perf; make O=/tmp/perf). Both are wanted for samples/bpf and
it would be nice to keep the O= option as well.

I don't have the time for the next few weeks. Perhaps mid-June I can
take a look.