Re: [gentoo-dev] packages which won't support x32

[Davide Pesavento]

On Fri, Oct 5, 2012 at 7:28 AM, "Paweł Hajdan, Jr."
<phajdan.jr@g.o> wrote:
> This is the case with dev-lang/v8: it doesn't build on x32
> (<https://bugs.gentoo.org/423815>), and upstream said they *won't*
> support x32
> (<https://groups.google.com/d/msg/v8-users/c-_URSZqTq8/7wHl095t2CMJ>).
>
> Note that with v8 it's not just about getting v8 itself to compile, but
> also making it generate correct JIT code on x32, which would require
> substantial changes to v8 code (in fact, a whole new 40K arch port, see
> the discussion linked to above).
>

Is it possible to disable the JIT engine?

> Should dev-lang/v8 get p.masked on x32 profile, or is there some better
> way to handle it? What are your suggestions?
>

Qt5 uses a forked version of v8 for QML/QtQuick. So this means that
x11-libs/qt-jsbackend:5 (available in qt overlay) and all the packages
depending on it, including qt-declarative:5 and kde, won't be
available on x32 :-/

> I had a crazy idea to just build v8 and v8-dependent packages using
> non-x32 ABI, but I'm not sure if it's possible and if it would be the
> right thing to do.
>
> Paweł
>

Thanks,
Davide