Buildroot Archive on lore.kernel.org
 help / color / mirror / Atom feed
From: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
To: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Romain Naour <romain.naour@gmail.com>,
	Buildroot List <buildroot@buildroot.org>
Subject: Re: [Buildroot] [PATCH v2 2/5] Revert "arch/xtensa: custom configuration requires an overlay"
Date: Sun, 25 Sep 2022 12:13:02 +0200	[thread overview]
Message-ID: <20220925121302.6e9aa48d@windsurf> (raw)
In-Reply-To: <20220925100355.GG1127102@scaer>

Hello,

On Sun, 25 Sep 2022 12:03:55 +0200
"Yann E. MORIN" <yann.morin.1998@free.fr> wrote:

> As 4cbf7336914f explained, an empty overlay is equivalent to using the
> fsf variant, so in that case, there would be no point in asking for a
> custom core to begin with, and Max Filipov seemed to agree:
>     https://lore.kernel.org/buildroot/CAMo8BfKHKuVC86uOwP0z8CzE425q7u0B_q6jdeU0Rw9upaiY=Q@mail.gmail.com/
> 
> So, I think we are maybe taking the issue from the wrong side here. We
> should forbid an empty overlay only when using our internal toolchain
> for a custom xtensa core. I.e.:
> 
>     diff --git a/arch/arch.mk.xtensa b/arch/arch.mk.xtensa
>     index 7b6c59cecd..1799528a93 100644
>     --- a/arch/arch.mk.xtensa
>     +++ b/arch/arch.mk.xtensa
>     @@ -1,8 +1,10 @@
>      BR_ARCH_XTENSA_OVERLAY_FILE = $(call qstrip,$(BR2_XTENSA_OVERLAY_FILE))
>      
>     -ifeq ($(BR_BUILDING)$(BR2_XTENSA_CUSTOM):$(BR_ARCH_XTENSA_OVERLAY_FILE),yy:)
>     +ifeq ($(BR_BUILDING)$(BR2_TOOLCHAIN_BUILDROOT),yy)
>     +ifeq ($(BR_ARCH_XTENSA_OVERLAY_FILE),)
>      $(error No xtensa overlay file provided. Check your BR2_XTENSA_OVERLAY_FILE setting)
>      endif
>     +endif

You're right, this seems to be a better approach. In the case of an
internal toolchain with custom core, it means the user still sees the
little/big endian choice, but if he hasn't specified an overlay, the
build will be aborted early on.

I guess I'm on for a v3!

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
_______________________________________________
buildroot mailing list
buildroot@buildroot.org
https://lists.buildroot.org/mailman/listinfo/buildroot

  reply	other threads:[~2022-09-25 10:13 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-25  9:09 [Buildroot] [PATCH v2 0/5] Fixes/improvements in Xtensa handling Thomas Petazzoni
2022-09-25  9:09 ` [Buildroot] [PATCH v2 1/5] arch/Config.in.xtensa: adjust endianness logic to avoid bogus configurations Thomas Petazzoni
2022-09-25 10:10   ` Yann E. MORIN
2022-10-31 21:02     ` Thomas Petazzoni via buildroot
2022-09-25  9:09 ` [Buildroot] [PATCH v2 2/5] Revert "arch/xtensa: custom configuration requires an overlay" Thomas Petazzoni
2022-09-25 10:03   ` Yann E. MORIN
2022-09-25 10:13     ` Thomas Petazzoni [this message]
2022-10-31 21:05       ` Thomas Petazzoni via buildroot
2022-09-25  9:09 ` [Buildroot] [PATCH v2 3/5] arch/Config.in.xtensa: use one line per case in BR2_ENDIAN definition Thomas Petazzoni
2022-09-25  9:09 ` [Buildroot] [PATCH v2 4/5] arch/{Config.in, arch.mk}.xtensa: add explicit support for DC233C core Thomas Petazzoni
2022-09-25  9:09 ` [Buildroot] [PATCH v2 5/5] configs/qemu_xtensa_lx60*: use new BR2_xtensa_dc233c option Thomas Petazzoni

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20220925121302.6e9aa48d@windsurf \
    --to=thomas.petazzoni@bootlin.com \
    --cc=buildroot@buildroot.org \
    --cc=romain.naour@gmail.com \
    --cc=yann.morin.1998@free.fr \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox