From: Luis Machado <luis.machado@linaro.org>
To: gdb-patches@sourceware.org
Subject: Re: [PATCH] [sim,moxie] Fix DTB generation mechanism and build failure
Date: Wed, 7 Apr 2021 17:39:31 -0300 [thread overview]
Message-ID: <8c9459b3-ffbe-af35-eeb6-513a66d87e5b@linaro.org> (raw)
In-Reply-To: <YG4VdJh8D0vtxhU6@vapier>
On 4/7/21 5:26 PM, Mike Frysinger wrote:
> On 07 Apr 2021 16:39, Luis Machado via Gdb-patches wrote:
>> I ran into a build failure with --enable-targets=all due to the fact that
>> the moxie sim expects to be able to use the dtc tool. If it isn't available,
>> the builds fails.
>>
>> Given the device tree compiler (dtc) is not available everywhere, it seems
>> fair to only generate the DTB file on the spot if we have such a tool. For
>> those who don't have the tool available, we can use a prebuilt version of the
>> DTB available in the repository.
>
> i think i asked about vendoring the tool in, but i think people were
> (understandably) not super keen on the idea since it's not GPL or GNU.
>
>> The DTS file hasn't changed since ~2009, so it seems pretty safe to assume
>> a prebuilt version is suitable to be used.
>
> and because it's quite small. if it were much larger, i don't think we'd
> want to do it this way.
>
>> I also checked that the DTB file generated on an x86_64-Linux machine is the
>> the same as the one generated on an AArch64-Linux machine.
>
> right, by design, it should be stable no matter where it's created.
>
>> Tested by running make/make install with/without the dtc tool.
>
> i think we want to fold this under the existing maintainer logic. check out
> commit 8c379db285f2ab8ad298288e86103548b90674a2 for a bit more detail. we'd
> want to only update+install the version in the source tree rather than switch
> between the one in the srcdir & the builddir one.
I'll take a look. Are you proposing we only use the prebuilt file from
the source tree instead of generating a new dtb file during the build?
And we should only do those things if maintainer mode is enabled?
>
> also look at how move-if-change is used in common/Make-common.in.
>
> lmk if that's too vague :).
> -mike
>
next prev parent reply other threads:[~2021-04-07 20:39 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-07 19:39 Luis Machado
2021-04-07 20:26 ` Mike Frysinger
2021-04-07 20:39 ` Luis Machado [this message]
2021-04-07 22:31 ` Mike Frysinger
2021-04-08 14:40 ` Luis Machado
2021-04-08 14:40 ` [PATCH,v2][sim,moxie] " Luis Machado
2021-04-08 16:37 ` Mike Frysinger
2021-04-08 17:21 ` [PATCH,v3][sim,moxie] " Luis Machado
2021-04-08 17:44 ` Mike Frysinger
2021-04-08 18:03 ` Luis Machado
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