[MacPorts] #70745: rust @ 1.81.0 Add cross compilation targets to port

[MacPorts]

#70745: rust @ 1.81.0 Add cross compilation targets to port
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 Reporter:  isolated-matrix  |      Owner:  (none)
     Type:  enhancement      |     Status:  new
 Priority:  Normal           |  Milestone:
Component:  ports            |    Version:  2.10.1
 Keywords:                   |       Port:  rust
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 I have been trying to figure out a way to use the MacPorts distribution of
 Rust to cross compile a program from my Mac to a linux machine for a while
 now and, as far as I can tell, there is no way to do it. Tutorials online
 all say that you need to install a 'target' using rustup; unfortunately,
 the MacPorts distribution of rust does not include rustup. As it is, I
 cannot find any way to install these targets without also installing a
 second distribution of Rust on my computer, which I would like to avoid.

 I was wondering if it would be possible to include cross compilation
 targets in the Rust port, or, if it would be easier, to add separate,
 discrete ports for the cross compilation targets themselves (similar to
 the way Python packages are handled with MacPorts)?

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Ticket URL: <https://trac.macports.org/ticket/70745>
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