Re: force gcc4.x to use libstdc++5

[Hans Schmidt]

Robert Heller wrote:
> At Sun, 09 Nov 2008 00:09:50 +0100 Hans Schmidt <ka5427-536@online.de> wrote:
>
> > Hi there!
> >
> > I am trying to force a gcc4.x compiler to use the libstdc++5 per default.
> >
> > This is needed because some "binary-only" Shared Libaries supplied by a 
> > 3rd party vendor uses libstdc++5.
> >
> > libstdc++5 is used by gcc-3.3 compilers - but unfortunately a gcc-4x is 
> > needed to compile the project.
> >
> > I spent some days of work to force a gcc-4x to use libstdc++5 per 
> > default. But I did not come closer to a solution.
> >
> > Do you have any ideas?
>
> It is not possible (as you have discovered). Versions of libstdc++ are
> tightly tied to compiler versions. You will *have* to modify your code
> to compile under gcc-3.3, probably by not using the features of gcc-4x
> your project now uses -- you will have to hack around the missing
> features.
>
> Either that or talk to the 3rd party vendor and try to get them to 
> re-build their libraries using gcc-4x & libstdc++6.
>
> Another possiblity is to build a gcc-3.3/libstdc++5 wrapper application
> that is run as a separate process from your main gcc-4x project and pass
> data back and forth with sockets or pipes.
>
> >                                                              

That was my concern.

Regarding the gcc documentation  gcc-3.3 uses abi version 1, and gcc-4.x 
uses abi version 2.

The gcc option -fabi-version=1 sounds like it should be possible to 
force  the usage of the older abi.

So I have recompiled the whole project with -fabi-version=1. But that 
seems to have no effect.

What is -fabi-version used for?