Re: [gentoo-embedded] sparcv8 gcc

["Сергей Миронов" <ierton@gmail.com>]

2009/6/23 wireless <wireless@tampabay.rr.com>:
> Сергей Миронов wrote:
>>>> http://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/SPARC-Options.html#SPARC-Options
>>>> You'll need to use -mno-fpu on the CFLAGS. And again, the -softfloat-
>>>> thing on the CHOST is gentoo-specific and only applies to ARM.
>
>>> Thanks! i'll try it as soon as i can.
>
>> Hi.
>> man gcc says about -mno-fpu in SPARC section that  "... you need to
>> compile libgcc.a, the library that comes with GCC, with -msoft-float
>> in order for this to work". So i try that:
>
> Well, I'm not up on the sparc architecture. But, maybe there
> are different versions of the sparc chipsets that have different
> hardware (read some with fpu some without). I know that
> is true amongst the Arm chipsets. Maybe a little research to
> actually verify that the Sparc chipset you are compiling
> on, actually has a fully functional FPU or not needs clarification?
> Furthermore, if this is a Motherboard from SUN or a sparc clone
> vendor, the FPU might be a separate, discreet chip....who knows....
>
> In the old days, Solbourne, Tatung and Sun all did funky things
> with the Sparc Architecture...... I think the Euro Space agency
> even designed and built some sparc chipsets. If they are on a FPGA,
> who knows the details of some funky SOC design. That may or maynot
> be the source of your issues.
>
>
> just a thought,
> hth,
>
>
> James
>

Mmm, iam using FPGA emulation board  ML402 with LEON3 cpu and
Gaisler's IP-blocks. There is no FPU, because FPU is not for free:)
I have some old splack distribution (from older colleges, i don't know
where they find it:) Splack runs fine, but there is no toolchain and
that's why it is hard to install modern software on top of it..

-- 
Thanks,
Sergey