Re: [Buildroot] [PATCH 1/1] package/linux-tools: perf: add host-python3 dependency

From: "Yann E. MORIN" <yann.morin.1998@free.fr>
To: Arnout Vandecappelle <arnout@mind.be>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Sergey Matyukevich <geomatsi@gmail.com>,
	buildroot@buildroot.org
Subject: Re: [Buildroot] [PATCH 1/1] package/linux-tools: perf: add host-python3 dependency
Date: Tue, 6 Sep 2022 22:07:18 +0200	[thread overview]
Message-ID: <20220906200718.GA1490660@scaer> (raw)
In-Reply-To: <23566bac-ad05-3bd6-1b0b-ad4f3b3f5c20@mind.be>

Arnout, All,

On 2022-09-06 21:46 +0200, Arnout Vandecappelle spake thusly:
> On 05/09/2022 22:17, Yann E. MORIN wrote:
> >On 2022-09-04 23:57 +0300, Sergey Matyukevich spake thusly:
> >>Linux kernel commit 00facc760903 ("perf jevents: Switch build to use
> >>jevents.py")
> >00facc760903 is only parts of 6.0-rc kernels so far, so unless one uses
> >bleeding edge technology, there is no issue. So, paying the price of a
> >host-pytohn3 build just for release-candidate kernels is a bit too much
> >in my opinion.
> >So, I added a config knob to drive this, like we have for host-openssl
> >and a few other host programs for building the kernel.
>  If only python is needed, no modules, then $(BR2_PYTHON3_HOST_DEPENDENCY)

Dang, that's right, I totally forgot about that one...

> should be used instead. That checks for python 3.4 but I think that that is
> fine for the kernel as well. If not, we should probably bump the minimum
> system python3 version.

The imports are:

    import argparse
    import csv
    import json
    import os
    import sys
    from typing import (Callable, Dict, Optional, Sequence, Set, Tuple)
    import collections

I think hey all are from the stdlib, so no external module needed

So, indeed, BR2_PYTHON3_HOST_DEPENDENCY seems a much better fit...

Regards,
Yann E. MORIN.

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