Emerge compile confusion

cazze · Posted: Wed Mar 26, 2003 10:41 pm Post subject: Emerge compile confusion

hi,

i did an emerge of Xfree86. In my USE flags i specified -march=i586

If i look to what Xfree86 tells me, i got

...
Build Operating System : Linux 2.4.20 i686
...

In the mean time i changed from kernel too.

Do i have to recompile XFree86 on my new kernel?
Why does it tells me i686?

If i have to recompile XFree86, how can i do this with emerge?

Thx

A gentoo newbie :roll:

aja · Posted: Wed Mar 26, 2003 10:45 pm Post subject:

I will be corrected if I am wrong, but the USE flags specify the processor that you are compiling for, whereas XFree is reporting the processor that you have. As i586 code will run on an i686 (but not necessarily vice-versa), you should have no problems, but your code may not be quite as optimised as it could be.

You may want to consider modifying your flags to more closely align with your actual processor to take advantage of optimisations available to you. I probably wouldn't personally recompile XFree until the next upgrade.

ebrostig · Posted: Wed Mar 26, 2003 10:46 pm Post subject:

I guess you meant that your CFLAGS include the -march entry, not the USE flag?

Some ebuilds, XFree86 is one of them, changes the flags themselves. The reason for this is that there are bugs popping up if some specific flags are used. The flags may differ from ebuild to ebuild.

The best thing to do when you see such athing is to read the ebuild file. In this case, /usr/portage/x11-base/xfree/xfree-4.3.0-r1.ebuild
There are lots of comments in this file that explains why they filter certain flags.

Hope this helps to clearify the issue

Erik
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aja · Posted: Wed Mar 26, 2003 10:48 pm Post subject:

Hmmm... Maybe I'm wrong.... I tend to trust Erik..... :-)

cazze · Posted: Wed Mar 26, 2003 11:15 pm Post subject:

thx for the quick reply!

And yes it was in the CFLAGS and nat in the USE :oops:

As i see it is better that i don't touch on the CFLAGS for Xfree86 (especialy me who am a newbie in linux

)
i got an other little question now that i looked in the portage tree,

i have xfree 4.2.1-r2 installed but i see that xfree 4.3.0-r1 is available, why do i don't see it if i do an emerge search xfree?
it says that the latest version available is 4.2.1-r2

kammicazze

aja · Posted: Wed Mar 26, 2003 11:25 pm Post subject:

4.3.0-r1 is in portage, but currently masked.

Try

cazze · Posted: Thu Mar 27, 2003 10:29 am Post subject:

thx,

i feel a bit less stupid now :wink:

kammicazze
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