linux-kernel - Re: [PATCH 0/5] media: Allwinner A10 CSI support

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Date:   Tue, 13 Nov 2018 17:55:58 +0100
From:   Thomas Petazzoni <thomas.petazzoni@...tlin.com>
To:     Hans Verkuil <hansverk@...co.com>
Cc:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Hans Verkuil <hverkuil@...all.nl>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        linux-media@...r.kernel.org, Andrzej Hajda <a.hajda@...sung.com>,
        Chen-Yu Tsai <wens@...e.org>, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>
Subject: Re: [PATCH 0/5] media: Allwinner A10 CSI support

Hello,

On Tue, 13 Nov 2018 17:00:25 +0100, Hans Verkuil wrote:

> Weird, if I build directly from that tarball, then v4l2-compliance should say:
> 
> v4l2-compliance SHA: not available, 64 bits
> 
> So that's what I expect to see from buildroot as well.

Indeed, that's strange, I see that the v4l2-compliance Makefile does:

version.h:
        @if git -C $(srcdir) rev-parse HEAD >/dev/null 2>&1; then \
                echo -n "#define SHA " >$@ ; \
                git -C $(srcdir) rev-parse HEAD >>$@ ; \
        else \
                touch $@ ; \
        fi

which correctly uses $(srcdir), so it shouldn't go "up" the libv4l
build folder and pick up the latest Buildroot commit SHA1. I'll have a
quick look.

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com