[gentoo-user] Strange KDE/gcc upgrade

[gentoo-user] Strange KDE/gcc upgrade

[Nagatoro]

Hi,

I've just upgraded my desktop computer to use gcc-3.4 and right after 
that I decided to try KDE-3.5. Everything compiled just fine but now i 
see that KDE-3.5 is linked against libstdc++.so.5 _and_ libstdc++.so.6.

Does anyone know where I've gone wrong?

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Re: [gentoo-user] Strange KDE/gcc upgrade

[Jan Callewaert]

2005/12/6, Nagatoro <nagatoro@gmail.com>:
> Hi,
>
> I've just upgraded my desktop computer to use gcc-3.4 and right after
> that I decided to try KDE-3.5. Everything compiled just fine but now i
> see that KDE-3.5 is linked against libstdc++.so.5 _and_ libstdc++.so.6.
>
> Does anyone know where I've gone wrong?
>
> --
> Naga


Have you run gcc-config to change the gcc-version? When installing a
new gcc, the default one is not automatically switched.

Jan

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Re: [gentoo-user] Strange KDE/gcc upgrade

[Nagatoro]

Jan Callewaert wrote:
> 2005/12/6, Nagatoro <nagatoro@gmail.com>:
>>I've just upgraded my desktop computer to use gcc-3.4 and right after
>>that I decided to try KDE-3.5. Everything compiled just fine but now i
>>see that KDE-3.5 is linked against libstdc++.so.5 _and_ libstdc++.so.6.
>>
>>Does anyone know where I've gone wrong?
> 
> Have you run gcc-config to change the gcc-version? When installing a
> new gcc, the default one is not automatically switched.

Yes
Also cleared the ccache cache and stopped distcc and did a emerge -e 
system. Didn't do a emerge -e world due to time issues (genlop tells 
me it should take 4 days and 12 hours...) but as I understand it every 
new emerge after the change of gcc should use the new version of 
libstdc++.

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Re: [gentoo-user] Strange KDE/gcc upgrade

[Peter Ruskin]

On Tuesday 06 December 2005 13:27, Nagatoro wrote:
> Jan Callewaert wrote:
> > 2005/12/6, Nagatoro <nagatoro@gmail.com>:
> >>I've just upgraded my desktop computer to use gcc-3.4 and right
> >> after that I decided to try KDE-3.5. Everything compiled just
> >> fine but now i see that KDE-3.5 is linked against
> >> libstdc++.so.5 _and_ libstdc++.so.6.
> >>
> >>Does anyone know where I've gone wrong?
> >

>From http://www.gentoo.org/proj/en/base/x86/gcc-upgrading-guide.xml:

# revdep-rebuild --library libstdc++.so.5 -- -pv
# revdep-rebuild --library libstdc++.so.5

-- 
Peter
========================================================================
Gentoo Linux: Portage 2.0.51.22-r3.	kernel-2.6.13-gentoo-r5.
i686 AMD Athlon(tm) XP 3200+.		gcc(GCC): 3.4.4.
KDE: 3.5.0.				Qt: 3.3.4.
========================================================================

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Re: [gentoo-user] Strange KDE/gcc upgrade

[Nagatoro]

Peter Ruskin wrote:
> From http://www.gentoo.org/proj/en/base/x86/gcc-upgrading-guide.xml:
> 
> # revdep-rebuild --library libstdc++.so.5 -- -pv
> # revdep-rebuild --library libstdc++.so.5

Yes I've read that too. But why is the newly compiled KDE linking 
against libstdc++.so.5 when it was compiled _after_ the gcc change?

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Re: [gentoo-user] Strange KDE/gcc upgrade

[Richard Fish]

On 12/6/05, Nagatoro <nagatoro@gmail.com> wrote:
> Peter Ruskin wrote:
> > From http://www.gentoo.org/proj/en/base/x86/gcc-upgrading-guide.xml:
> >
> > # revdep-rebuild --library libstdc++.so.5 -- -pv
> > # revdep-rebuild --library libstdc++.so.5
>
> Yes I've read that too. But why is the newly compiled KDE linking
> against libstdc++.so.5 when it was compiled _after_ the gcc change?

Because it is also linking against some other library that you already
have installed (Qt, maybe?) that is linked against stdc++.so.5.

That's why you need to revdep-rebuild everything linked against the old library.

-Richard

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Re: [gentoo-user] Strange KDE/gcc upgrade

[Nagatoro]

Richard Fish wrote:
> Because it is also linking against some other library that you already
> have installed (Qt, maybe?) that is linked against stdc++.so.5.

Point well taken.
But would I see this "link" on the actual KDE binaries (eg ldd kview) or 
would I see this if I checked the QT library that KDE links against?

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Re: [gentoo-user] Strange KDE/gcc upgrade

[Richard Fish]

On 12/6/05, Nagatoro <nagatoro@gmail.com> wrote:
> Richard Fish wrote:
> > Because it is also linking against some other library that you already
> > have installed (Qt, maybe?) that is linked against stdc++.so.5.
>
> Point well taken.
> But would I see this "link" on the actual KDE binaries (eg ldd kview) or
> would I see this if I checked the QT library that KDE links against?

You can check both.  The ldd output of a binary shows the complete
dependancy tree.  You can then check individual libraries.  The
following script should identify the 'offender':

for x in `ldd /usr/kde/3.5/bin/kview | awk '{ print $3}' | grep lib` ; do
  echo $x
  ldd $x
  read
done

Just press "enter" to move from one library to the next...

-Richard

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Re: [gentoo-user] Strange KDE/gcc upgrade

[Nagatoro]

Richard Fish wrote:
> You can check both.  The ldd output of a binary shows the complete
> dependancy tree.  You can then check individual libraries.  The
> following script should identify the 'offender':
> 
> for x in `ldd /usr/kde/3.5/bin/kview | awk '{ print $3}' | grep lib` ; do
>   echo $x
>   ldd $x
changed this to ldd $x | grep libstdc++.so.5
>   read
> done
> 
> Just press "enter" to move from one library to the next...

Thanks!

This shows me that kview and some of it's libraries link to 
libstdc++.so.5. Or am I missreading the display (libstdc++.so.5 shows up 
both for kview and some of the libs)?

I not back to the former question should kview link directly to 
libstdc++.so.5 at all?

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Re: [gentoo-user] Strange KDE/gcc upgrade

[Richard Fish]

On 12/6/05, Nagatoro <nagatoro@gmail.com> wrote:
> Richard Fish wrote:
> > You can check both.  The ldd output of a binary shows the complete
> > dependancy tree.  You can then check individual libraries.  The
> > following script should identify the 'offender':
> >
> > for x in `ldd /usr/kde/3.5/bin/kview | awk '{ print $3}' | grep lib` ; do
> >   echo $x
> >   ldd $x
> changed this to ldd $x | grep libstdc++.so.5
> >   read
> > done
> >
> > Just press "enter" to move from one library to the next...
>
> Thanks!
>
> This shows me that kview and some of it's libraries link to
> libstdc++.so.5. Or am I missreading the display (libstdc++.so.5 shows up
> both for kview and some of the libs)?
>
> I not back to the former question should kview link directly to
> libstdc++.so.5 at all?

It probably doesn't.  You can check this with:

strings /usr/kde/3.5/bin/kview | grep stdc++

The ldd output shows dependant libraries, plus dependencies of the
libraries, plus dependencies of the dependencies, and so on.

-Richard

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Re: [gentoo-user] Strange KDE/gcc upgrade

[Nagatoro]

Richard Fish wrote:
> On 12/6/05, Nagatoro <nagatoro@gmail.com> wrote:
>>I not back to the former question should kview link directly to
>>libstdc++.so.5 at all?
> 
> 
> It probably doesn't.  You can check this with:
> 
> strings /usr/kde/3.5/bin/kview | grep stdc++

Thanks, it turns out that it does link to both...
An emerge -e is running now ...
Will be back when it's done.

Thanks for you help.

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Re: [gentoo-user] Strange KDE/gcc upgrade

[cucu ionut cristian]

>  The ldd output of a binary shows the complete
> dependancy tree. 
I tried the ldd and ldd $x where x is a varios program wich runs fine on
my system and output is ldd: ./x: No such file or directory
I guess I shoud have set something somewhere but... don't know what
where

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Re: [gentoo-user] Strange KDE/gcc upgrade

[Richard Fish]

On 12/6/05, cucu ionut cristian <cuciferus@gmail.com> wrote:
> I tried the ldd and ldd $x where x is a varios program wich runs fine on
> my system and output is ldd: ./x: No such file or directory
> I guess I shoud have set something somewhere but... don't know what
> where

I'm not sure I understand.  What do you get if you do:

ldd /bin/bash

-Richard

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Re: [gentoo-user] Strange KDE/gcc upgrade

[cucu ionut cristian]

On Tue, 2005-12-06 at 20:00 -0700, Richard Fish wrote:
> 
> ldd /bin/bash 
 found problem: I must use ldd /parth/to/program/program to get the
right result thanks for tip

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Re: [gentoo-user] Strange KDE/gcc upgrade

[Graham Murray]

Nagatoro <nagatoro@gmail.com> writes:

> Yes I've read that too. But why is the newly compiled KDE linking
> against libstdc++.so.5 when it was compiled _after_ the gcc change?

It is probably linking against something (qt perhaps, as the existing
qt was used when I upgraded to kde 3.5) that is itself linked against
libstdc++.so.5
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