[gentoo-dev] Gentoo kernel setup question

[gentoo-dev] Gentoo kernel setup question

[Henti Smith]

Hi there :) 

Just a quick question regarding the include files for linux kernel on gentoo.

I see as with most distro's there is a header and source install (emerge)
so when I update to the latest source ... does this update the headers as well ? 

I'm asking this as I saw that /usr/include/linux and /usr/include/asm is actual directories.
I usually soft link /usr/include/linux to /usr/src/linux/include/linux and /usr/include/asm to /usr/src/linux/include/asm-i386
and since /usr/src/linux is linked to current kernel .. I always have my running kernel headers for everything else ? 

Is this a bad way of doing things ... 

comments ? 

Henti Smith 

Re: [gentoo-dev] Gentoo kernel setup question

[Eric Noack]

Am Tue, 17 Sep 2002 09:17:27 +0200
schrieb Henti Smith <bain@reaper.org>:

> Hi there :) 
> 
> Just a quick question regarding the include files for linux kernel on gentoo.
> 
> I see as with most distro's there is a header and source install (emerge)
> so when I update to the latest source ... does this update the headers as well ? 
> 
> I'm asking this as I saw that /usr/include/linux and /usr/include/asm is actual directories.
> I usually soft link /usr/include/linux to /usr/src/linux/include/linux and /usr/include/asm to /usr/src/linux/include/asm-i386
> and since /usr/src/linux is linked to current kernel .. I always have my running kernel headers for everything else ? 
> 
> Is this a bad way of doing things ... 
> 
> comments ? 
> 
It actually is a bad way of doing things,
the headers in /usr/include should always keep the same you did compile the important librarys like glibc to.

if you replace this headers and there actually is a change in them you have to re-compile everything that uses that part,
which would be glibc, Xlibs, ..., ...

so its just usual to keep the header version there u used to compile glibc.

Corvus V Corax




> Henti Smith 
> _______________________________________________
> gentoo-dev mailing list
> gentoo-dev@gentoo.org
> http://lists.gentoo.org/mailman/listinfo/gentoo-dev
> 

Re: [gentoo-dev] Gentoo kernel setup question

[Henti Smith]

> > I'm asking this as I saw that /usr/include/linux and /usr/include/asm is actual directories.
> > I usually soft link /usr/include/linux to /usr/src/linux/include/linux and /usr/include/asm to /usr/src/linux/include/asm-i386
> > and since /usr/src/linux is linked to current kernel .. I always have my running kernel headers for everything else ? 
> > 
> It actually is a bad way of doing things,
> the headers in /usr/include should always keep the same you did compile the important librarys like glibc to.

So if I update my kernel I have to recompile everything ? 

> if you replace this headers and there actually is a change in them you have to re-compile everything that uses that part,
> which would be glibc, Xlibs, ..., ...

ok .. I think I understand .. .

> so its just usual to keep the header version there u used to compile glibc.

recompile .. here I come :)) 

H 

Re: [gentoo-dev] Gentoo kernel setup question

[Wilbert Berendsen]

Op dinsdag 17 september 2002 09:17, schreef Henti Smith:
> Hi there :)
>
> Just a quick question regarding the include files for linux kernel on
> gentoo.
>
> I see as with most distro's there is a header and source install (emerge)
> so when I update to the latest source ... does this update the headers as
> well ?
>
> I'm asking this as I saw that /usr/include/linux and /usr/include/asm is
> actual directories. I usually soft link /usr/include/linux to
> /usr/src/linux/include/linux and /usr/include/asm to
> /usr/src/linux/include/asm-i386 and since /usr/src/linux is linked to
> current kernel .. I always have my running kernel headers for everything
> else ?
>
> Is this a bad way of doing things ...
>
> comments ?

According to Linus (dont have a link handy right now) /usr/include/linux and 
asm should'nt be symlinked anymore, but just contain the headers that were 
used there when compiling glibc.

Bye,
Wilbert

-- 
Wilbert Berendsen (http://www.xs4all.nl/~wbsoft/)
!! Please help ending Death-by-Stoning Sentences
!! http://www.mertonai.org/amina/OpenLetter.htm

[gentoo-dev] Re: Gentoo kernel setup question

[Paul]

Henti Smith <bain@reaper.org>, on Tue Sep 17, 2002 [09:51:59 AM] said:
> So if I update my kernel I have to recompile everything ? 
> 
> > if you replace this headers and there actually is a change in them you have to re-compile everything that uses that part,
> > which would be glibc, Xlibs, ..., ...
> 
> ok .. I think I understand .. .
> 
> > so its just usual to keep the header version there u used to compile glibc.
> 
> recompile .. here I come :)) 
> 
> H 

	Hi;


	I would consider it a bug if updating a kernel required
recompilation of everything. This has been gone over before--
surely the new kernels headers dont replace the system headers.
	Build all the new kernels you want, and
/usr/include/[linux|asm] should stay whatever they were when
glibc was built. If you choose to update the system headers,
then rebuild...

Paul
set@pobox.com