libstdc++5 and gcc 3.3

[John Richard Moser]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1



Matthew Garrett wrote:
> On Mon, Oct 09, 2006 at 03:43:24PM -0400, John Richard Moser wrote:
> 
>> Can the ABI on this be rolled together into one library?  I recall doing
>> things like finding apps demanding libstdc++5 and symlinking 6 to the
>> .so they were looking for, which worked fine; to what extent it works
>> fine I don't know, eventually some app will go "I CAN'T FIND A SYMBOL I
>> WANT!!"
> 
> Not in any realistic way, no. The symbol mangling depends on the 
> compiler used to build the library.
> 
>>  - Keep libstdc++5.  Safest, easiest option; but the library is 730K
> 
> I'm sure people will live.
> 
>>  - Symlink or hardlink libstdc++6 to libstdc++5.  May work, may not,
>>    some apps will work with it but it is unknown (but likely) if any
>>    will outright fail.
> 
> Will entirely fail to work, since they're from different C++ ABIs.
> 

Ah, yes, that.  I probably flubbed this up somehow on Gentoo and wound
up with a really weird system :)

>>  - Roll any libstdc++5 compatibility necessary and proper into
>>    libstdc++6.  Any action breaking v6 programs will be impossible; but
>>    ELF versioning allows this to be done feasibly.  Then
>>    symlink/hardlink.  Probably safe, probably a lot of work.
> 
> Approximately impossible.
> 
>>  - Produce a thin wrapper library that adds proper compatibility
>>    layers, and links to libstdc++6.  This is probably the safest and
>>    easiest option that avoids installing libstdc++5.
> 
> Unbelievable pain.
> 
> The only sensible option is keeping libstdc++. 730K isn't worth weeks of 
> developer time.

Lazy way is the easiest and fastest.  Was worth a shot.

> 

- --
All content of all messages exchanged herein are left in the
Public Domain, unless otherwise explicitly stated.

    Creative brains are a valuable, limited resource. They shouldn't be
    wasted on re-inventing the wheel when there are so many fascinating
    new problems waiting out there.
                                                 -- Eric Steven Raymond

    We will enslave their women, eat their children and rape their
    cattle!
                  -- Bosc, Evil alien overlord from the fifth dimension
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.3 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
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=RkJu
-----END PGP SIGNATURE-----