CFLAGS for G3 800 Mhz iBook?

cayenne · l33t Joined: 17 Oct 2002 Posts: 945 Location: New Orleans

Hi all,
Thanks for all the help so far....been hitting a few gotcha's along the way here. I'm trying to figure out how to best put down my CFLAGS. I have an iBook, with G3 800Mhz chip.

I'm a little confused in the make.conf.examples of which chip setting I should use. One point says to use -mcpu=750...but, I also see -mcpu=powerpc

Also, do I need to use this -maltivec setting?

I've used -O3 on my x86 builds, but, have seen some posts saying that -O2 was better, faster and made for smaller files.

At this point I'm holding before I start the bootstrapping process, I've currently got:

CFLAGS="-O3 -mcpu=powerpc -pipe -fomit-frame-pointers"

Any suggestions for better settings?

Thank you,
]
cayenne
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Light travels faster than sound. This is why some people appear bright until you hear them speak.........

korg · n00b Joined: 27 Jan 2004 Posts: 46

Annoyingly, gentoo docs dont mention cflags at all in any helpful way, so it's up to outside sites like this one... (warning maybe old as its 1.4 and gcc3.2)

http://www.freehackers.org/gentoo/gccflags/flag_gcc3.html

and various contradictory forum posts to cover this.

For your reference, I use:

glurps · Apprentice Joined: 11 Mar 2004 Posts: 292

a usefull command is

cayenne · l33t Joined: 17 Oct 2002 Posts: 945 Location: New Orleans

glurps · Apprentice Joined: 11 Mar 2004 Posts: 292

jup

yesterday i got gentoo (kinda) to work on my pb on the 3th try but i guess on the first try i didn't have much of a chance, since i had no experience with linux at all before i tried.
"kinda" because i didn't get the bootloader to work yet. always have to use a funky combination of keys to enter some kind of bootpromt but you will get there too, you'll see :-)

zojas · Posted: Tue Aug 24, 2004 6:09 pm Post subject:

I highly recommend sticking with -O2. I've had ebuilds fail to compile on my 700 MHz g3 ibook with -O3. also, check out my web page, I have most of my config files posted there.
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Massimo B. · Posted: Wed May 10, 2006 7:51 am Post subject:

After some experience with my G3book I'd like to share my tested make.conf. Runs for months now and masters every emerge update (not considering other issues:):