Support for targeting multiple architectures

[negator]

It would be great if there was a straightforward way to add support for multiple architectures at once. A bit like how the Bazel --ios_multi_cpus works, but perhaps just allow an array of targets in Cargo.toml, which generates arch specific rules.

[acmcarther]

Can you reopen this in google/cargo-raze?

Response to both:

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I'm certainly open to this, but each target generates features, build scripts, and dependencies that are different, and I haven't had a chance to give enough though to the best way to organize the generated files. Do you have any ideas in that respect?

EDIT: I'll look into how ios_multi_cpus works.