Re: Gnutools: consideration for upgrade to GCC 4.6

On 17.01.2012 17:09, Stanislav Meduna wrote:
> On 17.01.2012 10:36, Tomas Frydrych wrote:
>
>> Some of the more recent gccs were not producing usable binaries on some
>> platforms (including arm) with the -Os option. I do not know if this is
>> the case with 4.6.2, and I don't think ecos uses -Os by default, but it
>> is probably worth checking whether this works (and at least documenting
>> somewhere if it does not).
> Do you happen to have more details on this - versions, flags used,
> example to reproduce...?
>
> http://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html says
>
>    -Os enables all -O2 optimizations that do not typically increase
>    code size. It also performs further optimizations designed
>    to reduce code size.
>
> it would be good to know whether the problems come from -O2 (which
> would be a major problem) or from these further optimizations.

I am compiling with default eCos options (that include -O2). Haven't 
noticed a problems so far.


Ilija