kfreebsd-amd64 ?

[Petr Salinger]

> > Does glibc 2.3 support amd64?  Otherwise we'll have to work on updating glibc first.
It should, port to x86-64/Linux was included already in 2.2.5.
But glibc 2.3.0 won't compile with gcc 4.0.
Updating glibc for kfreebsd-i386 should take precedence anyway. 

> IIRC LinuxThreads are not supported on amd64, so if we're going into
> that now we'll probably have to investigate into NPTL.  

IIRC LinuxThreads are supported on amd64.
In fact LinuxThreads is the only pthread add-on available for stock Linux 2.4. 
Debian/amd64 choosed to support only Linux 2.6+, and choosed
to support only NPTL pthread implementation, not both.

Petr