explain custom-optimization use flag [solved]

cnistra · Last edited by cnistra on Sat Jul 19, 2008 7:21 pm; edited 1 time in total

Hello, can somebody please explain this new use flag custom-optimization. A more detailed one than the output of euse would be grand.
Thanks!

PS.

Schwinni · Posted: Sat Jul 19, 2008 3:28 pm Post subject:

Seems like they are not used in the ebuilds yet...

Still I'd also like to know for what they are meant.

Arfrever · Posted: Sat Jul 19, 2008 3:32 pm Post subject:

Schwinni · Posted: Sat Jul 19, 2008 3:42 pm Post subject:

And it works already?
How is it done?

I cannot see a query on that use flag in the ebuilds...

armin76 · Developer Joined: 24 Apr 2006 Posts: 163

Its just for the mozilla-firefox-3 and xulrunner-1.9 ebuilds...if you emerge them with that use-flag enabled, it will use your -O* option, if you don't, which is the default, it will use mozilla's default, which uses a combination of -O1, -O0, -O2, -Os and -O3

Schwinni · Posted: Sat Jul 19, 2008 3:57 pm Post subject:

Yeah, I got that.
My question was more "ebuild technical".

How do you achieve the usage of different compiler options if the ebuild doesn't contain something like

<pseudo code>
if (custom-optimization use flag is set) {
use compiler option from make.conf;
} else {
use mozilla's options;
}
</pseudo code>

?

Arfrever · Posted: Sat Jul 19, 2008 4:29 pm Post subject:

armin76 · Developer Joined: 24 Apr 2006 Posts: 163

Oops, -O2 should be allowed.
I'll fix that

Schwinni · Posted: Sat Jul 19, 2008 6:35 pm Post subject:

cnistra · Posted: Sat Jul 19, 2008 7:20 pm Post subject:

Thanks everyone for the explanation. I'm not complaining but I think it's a bit odd to have a use flag for a ebuild to honour optimization options that have been deemed safe (or at least not filtered out) for that particular ebuild. Anyway, I'm looking forward to compile all the parts of firefox with O2. Thanks again.