From: Scott Wood <scottwood@freescale.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 2/2 RESEND] SPL: Allow user to disable CPU support library
Date: Fri, 16 Sep 2011 17:07:52 -0500 [thread overview]
Message-ID: <4E73C8B8.3040505@freescale.com> (raw)
In-Reply-To: <201109162347.08103.marek.vasut@gmail.com>
On 09/16/2011 04:47 PM, Marek Vasut wrote:
> On Friday, September 16, 2011 11:42:50 PM Scott Wood wrote:
>> On 09/16/2011 04:38 PM, Marek Vasut wrote:
>>> On Friday, September 16, 2011 09:49:28 PM Scott Wood wrote:
>>>> Still, this seems hackish. Shouldn't the control be on specific files
>>>> that you include, not directories?
>>>
>>> I don't think so ... why ?
>>
>> That's how the main U-Boot build does it... More specifically, the
>> config.h controls should be on features, and the makefiles should decide
>> which (if any) files are required for that feature. If there are no
>> files from arch/$(ARCH)/cpu/$(CPU) needed, then we get an empty
>> lib$(CPU).o -- nothing special needed to avoid it.
>
> Yes, but you basically _always_ want that CPU support code in ... and I have no
> idea why you'd like to avoid particular files.
You have no idea why I'd like to be extremely selective with what I
include in a 4K binary?
It's not about avoiding particular files. It's about including
*nothing* but what is explicitly asked for through some SPL-specific
CONFIG symbol. Maybe that includes everything in arch/$(ARCH)/cpu.
Maybe it includes nothing in there. More likely, it includes just a
fraction of it.
If your answer is gc-sections, why do you need to drop the whole
directory? And why waste time building entire files that we know we
don't want? Why waste time debugging where the sudden bloat came from
instead of getting a simple and clear undefined-symbol error?
-Scott
next prev parent reply other threads:[~2011-09-16 22:07 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-12 4:03 [U-Boot] [PATCH 0/2] SPL improvements Marek Vasut
2011-09-12 4:03 ` [U-Boot] [PATCH 1/2 RESEND] SPL: Make path to start.S configurable Marek Vasut
2011-10-05 19:08 ` Wolfgang Denk
2011-10-05 20:07 ` Wolfgang Denk
2011-10-05 20:15 ` Wolfgang Denk
2011-09-12 4:03 ` [U-Boot] [PATCH 2/2 RESEND] SPL: Allow user to disable CPU support library Marek Vasut
2011-09-15 22:57 ` Scott Wood
2011-09-15 23:17 ` Marek Vasut
2011-09-16 19:49 ` Scott Wood
2011-09-16 21:38 ` Marek Vasut
2011-09-16 21:42 ` Scott Wood
2011-09-16 21:47 ` Marek Vasut
2011-09-16 22:07 ` Scott Wood [this message]
2011-09-16 22:48 ` Marek Vasut
2011-09-19 18:13 ` Scott Wood
2011-09-19 22:31 ` Marek Vasut
2011-09-20 19:12 ` Scott Wood
2011-09-20 21:16 ` Marek Vasut
2011-09-20 21:23 ` Scott Wood
2011-09-20 21:30 ` Marek Vasut
2011-09-20 23:31 ` Scott Wood
2011-09-22 8:52 ` Marek Vasut
2011-10-05 21:44 ` Tom Rini
2011-10-05 22:02 ` Scott Wood
2011-10-05 22:20 ` Marek Vasut
2011-10-06 0:13 ` [U-Boot] [PATCH 1/2] " Marek Vasut
2011-10-06 0:13 ` [U-Boot] [PATCH 2/2] SPL: Allow ARM926EJS to avoid compiling in the CPU support code Marek Vasut
2011-10-18 21:33 ` Albert ARIBAUD
2011-10-18 22:30 ` Marek Vasut
2011-10-21 20:44 ` Marek Vasut
2011-10-21 21:52 ` Albert ARIBAUD
2011-10-21 22:00 ` Marek Vasut
2011-10-21 22:44 ` Albert ARIBAUD
2011-10-21 22:46 ` Marek Vasut
2011-10-21 23:08 ` Albert ARIBAUD
2011-10-21 23:45 ` Marek Vasut
2011-10-22 0:04 ` Tom Rini
2011-10-22 0:19 ` Marek Vasut
2011-10-22 0:41 ` Albert ARIBAUD
2011-10-22 1:20 ` Marek Vasut
2011-10-22 7:05 ` Albert ARIBAUD
2011-10-24 10:14 ` [U-Boot] [PATCH 2/2 V2] " Marek Vasut
2011-11-03 0:05 ` Marek Vasut
2011-11-04 13:59 ` Marek Vasut
2011-11-08 21:15 ` Albert ARIBAUD
2011-10-06 15:54 ` [U-Boot] [PATCH 1/2] SPL: Allow user to disable CPU support library Scott Wood
2011-10-06 23:35 ` Marek Vasut
2011-09-12 4:12 ` [U-Boot] [PATCH 0/2] SPL improvements Marek Vasut
2011-10-05 11:04 ` Marek Vasut
2011-10-05 19:14 ` Wolfgang Denk
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=4E73C8B8.3040505@freescale.com \
--to=scottwood@freescale.com \
--cc=u-boot@lists.denx.de \
/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