Rust: Allow running doctests and unit tests

[mkrasnitski]

Adding the cargo::rustc-link-arg option to the build.rs file of the binaryninja crate allows doctests and unit tests to be linked against binaryninjacore.so.1 and ran when invoking cargo test.

Also, the single-colon cargo: syntax is deprecated as of Rust 1.77, and future features will all use the cargo:: syntax. Since the MSRV is already Rust 1.77, it's fine to switch for consistency's sake going forward.

[mkrasnitski]

I guess CI is failing because binja isn't actually installed as part of the GH action? I wouldn't know how to set it up to allow for the linking to succeed - as far as I know the build.rs changes are correct (works on my machine lol)

[emesare]

I guess CI is failing because binja isn't actually installed as part of the GH action?

You are correct we do not install binja on GH actions, we only use it for PR checks. I think it would be fine to just not run tests in CI.

[mkrasnitski]

What's odd is that the doctests compile fine, whereas cargo test --no-run fails to even compile. What could be the difference here?

[emesare]

What's odd is that the doctests compile fine, whereas cargo test --no-run fails to even compile. What could be the difference here?

The doctests are all annotated with no_run

[mkrasnitski]

Exactly: they type check and compile just fine but don't run. For some reason though, the unit tests don't link correctly even though --no-run is passed, whereas the doctests do. I wonder if there's some subtle difference between how doctests and unit tests are treated here.

[emesare]

This PR is superseded by rust_break_everything.

Specifically 8a24a43 (Warning: this branch will rewrite history, these commits may not be accurate later)