Where exactly do I add the SSE3 flag?

Misfit138 · Dec 18, 2006

I got these flags from Gentoo's safe flags page for my AMD X2, which I will be running in 32bit mode, x86.

CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon64 -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
I will also be adding MAKEOPTS="-j3"
My question is where do I add -msse3 ?
Like this: CFLAGS="-march=athlon64 -O2 -pipe -msse3 -fomit-frame-pointer" (?)

klingens · Dec 18, 2006

Misfit138 · Dec 18, 2006

klingens said:
yes

Thank you!

Question B.
From the Gentoo Install Guide:
"When the kernel has finished compiling, copy the kernel image to /boot. Use whatever name you feel is appropriate for your kernel choice and remember it as you will need it later on when you configure your bootloader. Remember to replace kernel-2.6.17-gentoo-r5 with the name and version of your kernel."

Where will the compiled kernel be copied FROM? Will it be in /usr/src/linux ?

S_Wilson · Dec 18, 2006

/usr/src/linux is where they usually are if you use symlinks otherwise is may be in /usr/src/linux kernel version. More specifically, it could be in the /arch/i386 directory. It has been a long time since I compiled a kernel so my memory may be a little hazy.

Seems like I used to issue a command like "make modules_install && make install" and everything would be moved to the proper place only needing to run lilo to be done. I don't know if that will work with gentoo or even the 2.6 kernel.

Suicide Al · Dec 18, 2006

/usr/src/linux/arch/i386/boot/bzImage

splat · Dec 18, 2006

Suicide Al said:
/usr/src/linux/arch/i386/boot/bzImage

yes, kernel config goes as such:

Code:

$ su -
password:

# cd /usr/src/linux
# make menuconfig
[config kernel]
# make && make modules_install
# cp arch/i386/boot/bzImage /boot/kernel
# reboot

David · Dec 19, 2006

splat said:
yes, kernel config goes as such:

Code:

$ su - password: # cd /usr/src/linux # make menuconfig [config kernel] # make && make modules_install # cp arch/i386/boot/bzImage /boot/kernel # reboot

Be sure to make sure the bootloader knows where to find the kernel, before rebooting

Misfit138 · Dec 19, 2006

All excellent info! Thank you all so very much. I fear the unknown, and like to be prepared if I can.

splat · Dec 19, 2006

David said:
Be sure to make sure the bootloader knows where to find the kernel, before rebooting

I should have mentioned I was assuming that whoever follows that has their system setup like mine.

I use Grub and I simple overwrite my old kernel everytime I rebuild. This is not always the best practice because it leave's you no life-raft if the new kernel doesn't work. You may want to consider moving your old kernel to something like /boot/kernel-old and creating a new grub/lilo entry to allow you to boot into it if the new kernel is not configured correctly.

and remember, if you use lilo, you need to run /sbin/lilo after making any changes to the menu config file.

Misfit138 · Dec 19, 2006

I have no old kernel per se, this is just information gathering for my first attempt at a fresh Gentoo install.
(With a wife, 2 kids, dogs, job, and life, I have to get this info in my in-between-time

)

Where exactly do I add the SSE3 flag?

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