[U-Boot] Toolchain for 0map35xx

[U-Boot] Toolchain for 0map35xx

[Ing.G.Morandi]

Hello to everyone,

Few weeks ago, I've followed a thread on this list regarding the toolchain 
should be used to compile code for omap 35xx.
Surfing on the net, I've also found a msg of Koen Kooi where he described a 
patch to be applied on /arch/arm/Makefile in order to let gcc 4.3.x work.

Now I am not an expert of toolchain and I didn't understand what is the 
actual status, thus my question is:
may I use the toolchain coming with the ELDK 4.2 to compile for omap35xx or 
do I have to apply some patches?

Best Regards

Gianfranco Morandi

[U-Boot] Toolchain for 0map35xx

[Dirk Behme]

Hi Gianfranco,

Ing.G.Morandi (Portatile) wrote:
> Hello to everyone,
> 
> Few weeks ago, I've followed a thread on this list regarding the toolchain 
> should be used to compile code for omap 35xx.
> Surfing on the net, I've also found a msg of Koen Kooi where he described a 
> patch to be applied on /arch/arm/Makefile in order to let gcc 4.3.x work.
> 
> Now I am not an expert of toolchain and I didn't understand what is the 
> actual status, thus my question is:
> may I use the toolchain coming with the ELDK 4.2 to compile for omap35xx or 
> do I have to apply some patches?

I don't know toolchain coming with ELDK 4.2, but for U-Boot for OMAP 
35x you don't need a special compiler. A non-broken arm-linux-gcc or 
similar will work. While bringing OMAP U-Boot support to mainline, we 
explicitly switched to a more conservative toolchain configuration 
(-march=armv5 instead of v7a) to enable more toolchains to work.

Try the toolchain you have and ask or report errors if it doesn't work.

Best regards

Dirk

Btw.: For other code, e.g. Linux user space programs which need 
special optimizations, other toolchain might be necessary, though.

[U-Boot] Toolchain for 0map35xx

[Ing.G.Morandi]

Hi Dirk, Hi Wolfgang,

many thanks for Your suggestions.
They have been very useful.

Have a nice Eastern holidays

Gianfranco Morandi

----- Original Message ----- 
From: "Dirk Behme" <dirk.behme@googlemail.com>
To: "Ing.G.Morandi (Portatile)" <gianfranco.morandi@euro-studio.it>
Cc: "u-boot users" <u-boot@lists.denx.de>
Sent: Thursday, April 09, 2009 6:02 PM
Subject: Re: [U-Boot] Toolchain for 0map35xx


> Hi Gianfranco,
>
> Ing.G.Morandi (Portatile) wrote:
>> Hello to everyone,
>>
>> Few weeks ago, I've followed a thread on this list regarding the 
>> toolchain should be used to compile code for omap 35xx.
>> Surfing on the net, I've also found a msg of Koen Kooi where he described 
>> a patch to be applied on /arch/arm/Makefile in order to let gcc 4.3.x 
>> work.
>>
>> Now I am not an expert of toolchain and I didn't understand what is the 
>> actual status, thus my question is:
>> may I use the toolchain coming with the ELDK 4.2 to compile for omap35xx 
>> or do I have to apply some patches?
>
> I don't know toolchain coming with ELDK 4.2, but for U-Boot for OMAP 35x 
> you don't need a special compiler. A non-broken arm-linux-gcc or similar 
> will work. While bringing OMAP U-Boot support to mainline, we explicitly 
> switched to a more conservative toolchain configuration (-march=armv5 
> instead of v7a) to enable more toolchains to work.
>
> Try the toolchain you have and ask or report errors if it doesn't work.
>
> Best regards
>
> Dirk
>
> Btw.: For other code, e.g. Linux user space programs which need special 
> optimizations, other toolchain might be necessary, though. 

[U-Boot] Toolchain for 0map35xx

[Wolfgang Denk]

Dear "Ing.G.Morandi \(Portatile\)",

In message <B4BBC786F9164F6BB1C778A5F3223A67@Thinkpad01> you wrote:
> 
> Few weeks ago, I've followed a thread on this list regarding the toolchain 
> should be used to compile code for omap 35xx.
> Surfing on the net, I've also found a msg of Koen Kooi where he described a 
> patch to be applied on /arch/arm/Makefile in order to let gcc 4.3.x work.
> 
> Now I am not an expert of toolchain and I didn't understand what is the 
> actual status, thus my question is:
> may I use the toolchain coming with the ELDK 4.2 to compile for omap35xx or 
> do I have to apply some patches?

I am not aware of any problems when using the ELDK to build code  for
the  OMAP  processors. There may be benchmarks where other toolchains
give some percent betterperformance, but as far as U-Boot or Linux is
concerned that should not be a problem  (if  you  are  even  able  to
measure the difference).

Best regards,

Wolfgang Denk

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