[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

[Willie Wong]

Post by Alexander Skwar
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. (=

Post by Alexander Skwar
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

Post by Alexander Skwar
Thanks,
Alexander Skwar
--
knot in cables caused data stream to become twisted and kinked
--

[Willie Wong]

Post by Willie Wong

Post by Alexander Skwar
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

Post by Willie Wong

Post by Alexander Skwar
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

Post by Alexander Skwar
Thanks,
Alexander Skwar
--
knot in cables caused data stream to become twisted and kinked
--

--
A fine is a tax for doing wrong.
A tax is a fine for doing well.
Sortir en Pantoufles: up 4 days, 2:41
--

--
"The major difference between a thing that might go wrong
and a thing that cannot possibly go wrong is that when a
thing that cannot possibly go wrong goes wrong it usually
turns out to be impossible to get at or repair."

- One of the laws of computers and programming revealed.
Sortir en Pantoufles: up 4 days, 2:55

[Alexander Skwar]

Post by Willie Wong

Post by Willie Wong

Post by Alexander Skwar
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