Public SourceMage Discussion List

[Sergey A Lipnevich <sergeyli AT pisem.net>]

Is there any way we can improve this? Will it help if ldconfig is run at 
the end of the fragment that you attached?

Julian v. Bock wrote:

> Hi
>
> What is the save_libraries function in libsorcery for?  I think
> this is responsible for the glibc update problems.
>
> save_libraries is called from prepare_install before the make install.
> It does the following:
>
> [...]
>
>  ldconfig  $OLD_LIBS
>
>  if  [  -z   "$LD_LIBRARY_PATH"  ]
>  then  export  LD_LIBRARY_PATH="$OLD_LIBS"
>  else  export  LD_LIBRARY_PATH="$OLD_LIBS:LD_LIBRARY_PATH"
>  fi
>
>  if  [  "$SPELL"  ==  "glibc"         ]   ||
>      [  "$SPELL"  ==  "glibc-custom"  ];  then
>    ln  -sf  $OLD_LIBS/ld-$OLD_VERSION.so  /lib/ld-linux.so.2
>  fi
>
> linking $OLD_LIBS/ld-$OLD_VERSION.so to /lib/ld-linux.so.2 is definately
> *not* a good idea. this works *only* for the currently executing
> subshell, since only this one gets the modified LD_LIBRARY_PATH.
>
> No other shells / programs can execute shared executables since
> the old dynamic linker in /lib requires some versioned symbols
> found only in the old glibc.
>
> Even if the /lib/ld-* link would be restored after the build this is
> not a good idea since in the meantime everything else would be hosed.
>
> Julian
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>
>  


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