On Dec 8, 2008, at 15:29, Bryan Blackburn wrote:
So if someone wants to have 64bit support from a port, they'll need
to build
it +universal? This would have to require people adding the requisite
setting to universal_archs in macports.conf as well right, since
trunk still
specifies only 'ppc i386'?
Also, what about ports where building 64bit is easier than
universal, if
there are such ports?
To chime in: I also don't like having a variant for 64-bit support
and also think it should be part of the universal mechanism. But I
also don't like how setting the architectures you want in
macports.conf is the only way to influence what archs a port builds for.
I would like each port to be able to declare which architectures it
can be built for in universal mode. If a port does not specify, it is
assumed it can be built for all architectures. This way, a port can
specify that it only works on, say, i386 and ppc (if 64-bit doesn't
work), or that it only works on i386 and x86_64 (for ports like wine
that are Intel-only). Ports that are arch-agnostic would be able to
indicate that in some way too. All this would replace
"universal_variant no".
This would be in addition to the setting in macports.conf. For
example, a user requests in macports.conf that they prefer all 4
archs, and then individual ports can decide to only build a subset of
those.
MacPorts should also record which architectures a port was built for,
not just that it was built "universal". Otherwise it's painful to
upgrade from, say, a 2-arch universal to a 4-arch universal build of
a port.
MacPorts needs to be able to ensure that if you try to build port X
universal, and it depends on port Y, then the set of architectures
port X gets built for can be at most the set of architectures port Y
was built for.
I'm sure there was a previous discussion on the topic where I said
much the same thing, but I haven't tried to find it in the archives.
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