Re: 64 bit support, finally!

>  >  After my patch it should be possible to compile autopackage on 64 and
>  >  (!!!!) create true x86_64 packages! It's also possible to create
>  >  Hybrid-Packages (containing both binaries): Just set CpuArchitectures
>  >  to "x86 x86_64" and install the correct binary (I haven't tested it
>  >  though).
>
>  How would this work in practice for packagers? I assume we
>  (autopackage) would provide an x86_64 version of the support code +
>  frontends, but how would packagers do to provide both 64 and 32 bit
>  versions of their packages?

They would need to import both binaries and then do something like this:

if [[ $(uname -m) == "x86_64" ]]; then
    installExe bin64/foobar
else
    installExe bin32/foobar
fi

It would be better to provide something like GCCABI2 which
automatically creates patches.

>  I.e. is it possible to cross compile to x86_64 binaries on a x86 system?

Do you mean compiling x86_64 binaries on a x86 system? I think that's
not possible, but it's possible to create x86 binary on a x86_64
system with a special compiler switch (i will look this up and do some
testing).

>  Is CpuArchitectures a flag set in the .aspec? How will this affect
>  backwards compatibility?

You can set it in the .aspec file, but if you don't, it will
automatically set itself to the system you are currently running.
Backwards compatibility might be a problem, i haven't tested that.


>  >  Autopackage now determines whether it has got a x86_64 package and
>  >  only searches for proper libraries. Examples:
>
>  I'm not sure I understand the tables below. Is 'arch' the architecture
>  of the package or the users system? etc.

The user system. "package" is the archtecture of the package and
"libraries" is the sort of libraries autopackage will check for.

>  >  I hope everyone helps my testing it, I'm very often on IRC (nick:
>  >  jhasse). Feel free to highlight me.
>
>  We'd need some people with access to 64bit systems to try this. Is
>  there anyone on this list who can help testing this??

Yeah, it certainly needs more testing. I'm trying to set up VMware
today, so that i can test on several different machines.

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