Bug#176064: gcc-3.2: Provide a way to build cpu-specific versions

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

Daniel Schepler writes:
> Package: gcc-3.2
> Version: 1:3.2.2-0pre3
> Severity: wishlist
> 
> I've been rebuilding all my packages with Athlon optimization, using a
> combination of pbuilder and pentium-builder.  Unfortunately, because
> of the way this works, gcc-3.2 isn't compiled with Athlon
> optimization.  It would be nice to have a way to get this to happen.
> 
> Probably the easiest way (for me) would be to recognize the
> DEBIAN_BUILDARCH environment variable, which is also what
> pentium-builder uses.  If the variable were set, stage 2 and above,
> along with the libraries, would be built using
> "-O... -march=$DEBIAN_BUILDARCH -mcpu=$DEBIAN_BUILDARCH".

it would be easier to add an DEBIAN_EXTRA_BUILDFLAGS, as not every
architecture does have -mcpu/-march. s390 uses -mtune. I didn't check
all architectures ...