Configuring Gentoo 2004.2 for linux 2.6 and NPTL (Updated)

[fxlamare]

Hi!

i also failed compiling glibc with ntpl support.
Followed steps in this thread with the bootstrap26.sh script.

Guess i should try again the full setup with the updated wiki.
Had 2.6.5 kernel and 2.6.7 headers but the problem is not here (emerged 2.6.5 headers without success).

The last difference is that I boot with smb-nofb for scrolling performance reasons.

Will post my results when i'll back home.
FX
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from france, where it's rainy today

[preacher]

If you check this thread, you can read about my experiences with nptl.

I could bootstrap and emerge system fine, but it's day-to-day emerging that doesn't seem to utilize my quad cpu system as much as it did before.

[OneOfMany]

One last thing I can think of is the keywords. If you haven't either enabled "ACCEPT_KEYWORDS=~x86", or whatever it should be for your CPU's architecture, in /etc/make.conf for all packages or the linux26-headers specifically (by doing the "mkdir /etc/portage" and creating a package.keywords file with "sys-kernel/linux26-headers ~x86" in it) then emerge won't install the right headers (running "emerge -s linux26-headers should tell you if you've got them installed).

Wrongs headers then you won't get the enabled glibc. Beyond that...I guess you're just cursed .

[fxlamare]

Back home (it's 2am...)

Ok, i saved my downloaded files to spare time downloading them (hey we're late in France, 512kbps for about 30$/month ).

To make it short, I tried again and followed the wiki page's instructions. I discovered I had forgotten to set my CHOST to i686 in my make.conf (in stage 1 it comes with i386).

I guess it was the reason why it didn't work past times (shouldn't work that late..).

Now i'm waiting for the bootstrap step to finish in a few minutes. I guess it's OK now because some nptl-related strings appeared during compilation (i missed the beginning of glibc's compilation -- number 2 )

thanks!!

[Hauser]

Hmm, I recompiled glibc with nptl flag, the /lib/libc.so.6 output shows nptl is there:

[Snooper]

If you compiled glibc with nptl after you had a built system with a 2.6 kernel installed i have heard the build script will look and see if the install kernel source is 2.6 if so it will use that and ignore the installed headers package. But if you don't install the 2.6 headers and bootstrap then glibc won't be nptl because there where no 2.6 headers found. Also unless you do a emerge -e world "i think" everything will be built against the 2.4 headers and not 2.6 witch may not be a problem but it could lead to issues...
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[Digital Storm]

Hi

I just recently reinstalled my gentoo install with nptl...The only thing I changed in the guide was the bootstrapping, where I manually editted the "bootstrap-2.6.sh" as it was complaining about linux headers...I had removed the old one and installed the new ones just like the guide said...So I editted the "bootstrap-2.6.sh" and removed the portion where it wanted to emerge the headers, ran it and went onto "emerge system" and everything came out fine with nptl running...

[Snooper]

You actually don't have to run bootstrap-2.6.sh that i imagine is just still left behind from when the 2.6 headers where still part of the linux-headers ebuild. running plain bootstrap.sh will work just fine and it will not try and download the 2.6 headers and install them again. It's just there from the good ole days when you could just add linux-headers -* to package.keywords and run bootstrap-2.6.sh and it took care of everything but the move to linux26-headers from linux-headers blocks each other from both being installed and the script doesn't know to uninstall the old headers first then install the new ones... Maybe it will be fixed or they will release 2 stages one based on 2.6 headers, and another on the 2.4 headers so both groups could follow the Gentoo Handbook for installing
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[jetblack]

Great HOWTO, Snooper. I just followed it to reinstall gentoo on my laptop with NPTL support, and it worked like a charm.

[taskara]

Just wondering where teh GCC section is in this howto?

Following the instructions seems to still build gcc 3.3

Also, following instructions, /lib/libc.so.6 is still built with 2.4.21 kernel, and there is no nptl.. any ideas?

cheers
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[Snooper]

Are you doing a clean bootstrap.sh from a stage1? I don't go into how to update an existing install.

But to get rolling you need a Gentoo LiveCD with a 2.6 kernel. 2004.1 or 2004.2 will do. when the boot prompt comes up asking for what kernel you want to boot with type smp this is a 2.6 kernel and supports nptl.

Now you will need to download a stage1 and emerge sync (follow the guide) and add nptl to USE in /etc/make.conf then remove the old linux-headers, emerge the linux26-headers (following the guide) and you should have a 2.6 system w/nptl support.
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[taskara]

[hadees]

I am kind of confused, at the top of this post it says it is for using gcc 3.4 but on the wiki it makes no mention of it. So how do I do all this and add gcc 3.4? can you add the instructions to the wiki

[taskara]

[Snooper]

Follow this below linkg to a guide to using the gcc34-x86-2004.2 profile:

https://forums.gentoo.org/viewtopic.php?p=1452485&highlight=#1452485

at the end of the thread i have some info for package.keywords so you don't have to use ~x86 in make.conf and use a stable system with the exception of gcc-3.4.1, libstdc++-v3, and glibc-2.3.4
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[javock]

[taskara]

generally any kernel has worked for me

the thing that HASN'T worked is genkernel.. dietlibc crashes out when trying to build the initrd, which is most frustrating

but if I do a manual build everything seems to work.. development, vanilla, gentoo-dev, mm-sources, ck-sources etc..
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[javock]

[Lepaca Kliffoth]

Help! I used this guide and everything worked fine!! WHY???
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[zerojay]

[-=Zepplock=-]

This was an excellent tutorial.
Everything worked.

Thank you.
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[the_real_one_maniac]

warning: my english is bad.

I have one very strange and maybe stupid question

I take a look on yours output of /lib/libc.6.so (when you have nptl) and I notice that everyone have:

[wharding]

the_real_one_maniac: I was about to post the exact same message. I have a feeling that the string was updated.

I am just finishing a full install on my laptop that includes:

1) nitro-sources 2.6.9-nitro2
2) reiser4

Laptop is running like a rocket now and I am really happy.

If anyone is looking for a LiveCD that includes nitro sources as well as reiser4 support I found one here: http://lxnay.dnsalias.org/.

Good luck and happy nptl'ing.

P.S. If you are wondering whether its worth it to convert to NPTL and/or reiser4 all I can say is that I have NEVER seen my laptop run as fast as it i running right now

xorg, firefox, tbird, gimp, xmms streaming audio, 4 compiles all running at the same time on a P4 1.6Ghz with 512MB RAM, and it's looking at me like "Is that all you got?"

[taskara]

I have built three gentoo machiens lately, and installed with nptl as I have the previous 5 times before that.. but this time when I check libc.so.6, there is no NPTL listed.. am I crazy?

[SchAmane]