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Compile certain packages with -03, others with -02?
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flywheelbot
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PostPosted: Tue Sep 12, 2006 5:10 pm    Post subject: Compile certain packages with -03, others with -02? Reply with quote

I know the debate goes on as to if 03 is worth it or not--I'm not interested in all my binaries being larger, but for certain applications that I use regularly, I'd like to compile them (and their dependancies if necessary) with 03.

Is it possible to specify (like package.use?) that only certain packages should compile with -03 and others with -02?

Thanks!
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NeddySeagoon
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PostPosted: Tue Sep 12, 2006 6:41 pm    Post subject: Reply with quote

flywheelbot,

Per package CFLAGS are not supported yet. I know there is some work being done on it but I have no idea of timescales.
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flywheelbot
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PostPosted: Tue Sep 12, 2006 6:53 pm    Post subject: Reply with quote

Thanks--I figured it wouldn't be as simple as the package.use yet.

I saw in the gentoo wiki:
Quote:

It is very easy to get a system built using -O3 instead of -O2. A lot of packages that break with -O3 already replace the flag with -O2


at http://gentoo-wiki.com/CFLAGS

So, obviously some packages 'know' to step to -O2 from -O3 somewhere in the ebuild.

Again, the performance gains would probably be marginal at best--but for applications that I load only once, and use often (say, firefox, thunderbird, kdevelop), I wouldn't mind a slightly longer load time for any speed increase I can get.
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Earthwings
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PostPosted: Tue Sep 12, 2006 7:02 pm    Post subject: Reply with quote

Moved from Documentation, Tips & Tricks to Duplicate Threads, please see one of the various topics on this issue:

/etc/portage/package.c{,xx}flags features - v1.0_rc1
distclean and per package CFLAGS in portage...
[tool]portage-bashrc-ng - modular portage's bashrc

Please don't post support questions in Documentation, Tips and Tricks, see its forum description.
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