[gentoo-user] Using Intel's icc to compile the whole system?

[gentoo-user] Using Intel's icc to compile the whole system?

[Alexander Skwar]

Hi!

Is it possible to compile the complete system with the
icc from the Intel C++ Compiler?

Are there any (performance) gains to be expected on a
system using a Celeron M340 CPU?

Thanks,

Alexander Skwar
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Re: [gentoo-user] Using Intel's icc to compile the whole system?

[Willie Wong]

On Thu, Aug 04, 2005 at 08:19:00PM +0200, Alexander Skwar wrote:
> Hi!
> 
> Is it possible to compile the complete system with the
> icc from the Intel C++ Compiler?

afaik, no. Too many things rely on gcc-specific extensions. 
BUT! if you add "icc" to your USEflags, portage will compile things
with icc whenever the compile is known not to break. (=

> 
> Are there any (performance) gains to be expected on a
> system using a Celeron M340 CPU?
> 

Most likely. I remember seeing benchmarks showing that gcc is
dead-slow compared to icc. But then again, other benchmarks can show
comparable performance. My only advice is to try it out if you really
want to know. 

W
> Thanks,
> 
> Alexander Skwar
> -- 
> BOFH Excuse #69:
> 
> knot in cables caused data stream to become twisted and kinked
> -- 
> gentoo-user@gentoo.org mailing list

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Re: [gentoo-user] Using Intel's icc to compile the whole system?

[Willie Wong]

On Thu, Aug 04, 2005 at 03:20:43PM -0400, Willie Wong wrote:
> On Thu, Aug 04, 2005 at 08:19:00PM +0200, Alexander Skwar wrote:
> > Hi!
> > 
> > Is it possible to compile the complete system with the
> > icc from the Intel C++ Compiler?
> 
> afaik, no. Too many things rely on gcc-specific extensions. 
> BUT! if you add "icc" to your USEflags, portage will compile things
> with icc whenever the compile is known not to break. (=
> 

scratch that. You also need to set the $CC yourself plus a lot of
hocuspocus. Check 
  http://www.google.com/url?sa=U&start=1&q=http://gentoo-wiki.com/HOWTO_ICC_and_Portage&e=912


> > 
> > Are there any (performance) gains to be expected on a
> > system using a Celeron M340 CPU?
> > 
> 
> Most likely. I remember seeing benchmarks showing that gcc is
> dead-slow compared to icc. But then again, other benchmarks can show
> comparable performance. My only advice is to try it out if you really
> want to know. 
> 
> W
> > Thanks,
> > 
> > Alexander Skwar
> > -- 
> > BOFH Excuse #69:
> > 
> > knot in cables caused data stream to become twisted and kinked
> > -- 
> > gentoo-user@gentoo.org mailing list
> 
> -- 
> A fine is a tax for doing wrong.
> A tax is a fine for doing well.
> Sortir en Pantoufles: up 4 days,  2:41
> -- 
> gentoo-user@gentoo.org mailing list

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Re: [gentoo-user] Using Intel's icc to compile the whole system?

[Alexander Skwar]

Willie Wong schrieb:
> On Thu, Aug 04, 2005 at 03:20:43PM -0400, Willie Wong wrote:
>> On Thu, Aug 04, 2005 at 08:19:00PM +0200, Alexander Skwar wrote:
>> > Hi!
>> > 
>> > Is it possible to compile the complete system with the
>> > icc from the Intel C++ Compiler?
>> 
>> afaik, no. Too many things rely on gcc-specific extensions. 
>> BUT! if you add "icc" to your USEflags, portage will compile things
>> with icc whenever the compile is known not to break. (=
>> 
> 
> scratch that. You also need to set the $CC yourself plus a lot of
> hocuspocus. Check 
>   http://www.google.com/url?sa=U&start=1&q=http://gentoo-wiki.com/HOWTO_ICC_and_Portage&e=912

Hey, nice howto! I'll try to setup an icc system then.

Too bad, that some of the large packages like xorg don't
compile with icc :(

Cheers,

Alexander Skwar
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