[U-Boot] [RFC][PATCH] ARMV7: Patch to fix hard float build issues

[Alexander Holler]

Am 19.02.2011 14:51, schrieb Albert ARIBAUD:
> Le 19/02/2011 14:25, Måns Rullgård a écrit :
>
>>> So whats the reasoning to use -msoft-float as it is currently done? To
>>> confuse people? ;)
>>
>> I guess it's there to make sure no floating-point instructions make it
>> into u-boot, even though floats are not used in the code.  Perhaps
>> someone was paranoid.
>
> I think also that there is no choice but to have a float option for ARM
> C, either 'soft' or 'hard' (or 'softfp', actually, which is 'hard' with
> the 'soft' calling conventions), because the C compiler does not allow
> 'no floats', and anyway the C language *requires* to have some sort of
> float support.

As it is on every platform.

> Actually if you don't specify any float option, the C toolchain will
> choose one, which is just the same in the end: *some* float option is
> chosen.

Every compiler has dozens of options which are set to a default value.

> And since some option must be chosen, I prefer that U-Boot make the
> explicit decision, and choose soft float for the reasons I already exposed.

I don't see any reason to explicitly set an option for something which 
isn't used, but I know of many reasons to avoid such. ;)

Regards,

Alexander