Bug#184446: libstdc++5-dev has i486 specific asm code

[Matthias Klose <doko@cs.tu-berlin.de>]

Daniel Jacobowitz writes:
> On Wed, Mar 12, 2003 at 12:49:44PM +0100, Sebastian Wilhelmi wrote:
> > Package: libstdc++5-dev
> > Version: 1:3.2.3-0pre5
> > Severity: normal
> >  
> > The file /usr/include/c++/3.2/i386-linux/bits/atomicity.h
> > has code, which does not work on i386. It needs i486 or above.
> >  
> > Is i386 unsupported by debian?
> >  
> > Personally I haven't found any info regarding this on debian-devel or
> > in the debian policy, so is there any consensus in dropping i386?
> >  
> > (Note, that I don't have i386 myself, so I hope I didn't get that wrong.)
> >  
> > This bug would make nearly all C++-packages compiled with it unusable on i386.
> 
> The comment in that file says:
> 
> // Low-level functions for atomic operations: x86, x < 4 version  -*- C++ -*-
> 
> Is that incorrect?  Hmm, it's the same as the 486 version, so the
> comment is wrong.
> 
> This will be fixed in gcc 3.3 (at a performance penalty; we need to
> think about providing the i486 version also).

or we do think to drop i386 alltogether? How should this library be
installed? Building can be done in a second libstdc++-v3 build dir
with the compiler just built and -march=486 -mtune=585.