Making your kernel with gcc 3.1.1

matrixise · n00b Joined: 09 Jul 2002 Posts: 11 Location: Belgium

if you want to compile your kernel with gcc 3.1.1, it's easy.

you edit your Makefile, and you change the variable CC=gcc to CC=gcc-3.1

if you have an athlon-xp like me, you can change this file : arch/i386/Makefile.
find the line : CONFIG_MK7, and you change "-march=athlon" in "-march=athlon-xp -mcpu=athlon-xp"

rieger · Posted: Thu Jul 18, 2002 11:46 am Post subject:

when you install 1.3 then the only gcc = gcc3.1; so the kernel should be compiled with gcc3.1 isn't it?

but as I think of it; have I dreamed or did I see some march=i486 messages during kernel compile?

don't know it anymore.
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haree

matrixise · n00b Joined: 09 Jul 2002 Posts: 11 Location: Belgium

i have a 1.2, and my GCC is gcc 3.1 :-)

lol

i don't have errors but many of warnings.

you can specify your CPU in the Makefiles.

abhishek · Posted: Thu Jul 18, 2002 8:01 pm Post subject:

neuron · Advocate Joined: 28 May 2002 Posts: 2371

note that you only need to change the gcc-3.1 if your also having gcc-2.x.x installed.

it does compile stuff with a lot of safe flags though, to ensure stability.

I tried changing some stuff around a while ago actually, bzip2 gained about 1-2 seconds, so I figured it wasn't worth it

if someone can show me some benchmarks that shows compiling the kernel with optimized flags helps, that'd be cool

rac · Posted: Mon Aug 19, 2002 1:30 am Post subject:

GCC3 to OTG.
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