Re: crosstool-NG with GCC V3.X.X

[Andy Pevy <xywconsulting at googlemail dot com>]

Hi Arnaud,

       That would be brilliant, thanks.

Andy

On 13 May 2010 00:43, Arnaud Lacombe <lacombar@gmail.com> wrote:
> Hi,
>
> On Tue, May 11, 2010 at 5:51 AM, Yann E. MORIN
> <yann.morin.1998@anciens.enib.fr> wrote:
>> Andy,
>>
>> This kind of questins are best CCed to the mailing list.
>>
>> On Monday 10 May 2010 12:36:01 Andy Pevy wrote:
>>> I have picked up an old project that needs some modifications to
>>> it, and it was originally built using DaVinci-ARM GCC 3.4.3 from
>>> MontaVista and has kernel 2.6.10. I have tried compiling it with
>>> crosstool-NG compiled GCC 4.3.2 but the compiler is being too fussy
>>> about some of the kernel constructs.
>>> Is it possible to recreate the 3.4.3 tool set using crosstool-NG please ?.
>>
>> In crosstool-NG, gcc-3.x.x is considered 'obsolete', and the only 3.x.x
>> version still available is 3.4.6. You have to enable support for obsolete
>> versions:
>>
>> ?Paths and misc options ?--->
>> ? ?[*] Use obsolete features
>>
>> ?Operating System ?--->
>> ? ?Get kernel headers from: (Use custom headers)
>> ? ?( /some/where) Path to custom headers directory/tarball
>>
>> ?C compiler ?--->
>> ? ?gcc version (3.4.6 (OBSOLETE))
>>
>> Of course, I would highly encourage you to update your kernel and gcc.
>> There is a sample in crosstool-NG that can build for the DaVinci processor:
>>
>> ?# ct-ng show-arm-davinci-linux-gnueabi
>> ?arm-davinci-linux-gnueabi ?[L ?]
>> ? ? ?OS ? ? ? ? ? ? : linux-2.6.33.2
>> ? ? ?Companion libs : gmp-4.3.2 mpfr-2.4.2 libelf-0.8.13
>> ? ? ?binutils ? ? ? : binutils-2.20
>> ? ? ?C compiler ? ? : gcc-4.3.2 (C,C++)
>> ? ? ?C library ? ? ?: glibc-2.9
>> ? ? ?Tools ? ? ? ? ?: dmalloc-5.5.2 duma-2_5_15 gdb-6.8 ltrace-0.5.3 strace-4.5.19
>>
>> To use that sample:
>>
>> ?# ct-ng arm-davinci-linux-gnueabi
>> ?Now configured for "arm-davinci-linux-gnueabi"
>> ?# ct-ng build
>>
>> Of course, this sample builds a toolchain with headers from Linux 2.6.33.2,
>> and will require that you run the 2.6.33.2 kernel on your target. This is
>> really what I would recommend, that you update your kernel. 2.6.10 is now
>> really, really old...
>>
> Sometimes, people have no choice but to use an old kernel, especially
> when you need to make change to an old project, or when you don't have
> the control of the main project. The cost of bringing up a new BSP
> might also be too high or the original vendor may even not support it
> anymore. I have no interest to see people in this situation be turned
> down, as I am one of them.
>
> That said, I have a few patches to support those environment (ie truly
> supporting all 2.6 and [maybe] 2.4 kernel). I shall put these in a
> public git tree, but it needs some clean-up first. If you are
> interested by these patches, please pick them. As of the ETA, it
> should be good by the end of the week.
>
> my 0.2c,
> ?- Arnaud
>

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