Targets for MacCatalyst are failing to build

[tmarkovski]

This started to happen recently, but I'm not sure where exactly the problem is. Attempting to build the library for *-macabi targets is failing with clang error.

cargo +nightly build --release -Z build-std --target x86_64-apple-ios-macabi
// and
cargo +nightly build --release -Z build-std --target aarch64-apple-ios-macabi

It seems related to this issue. I tried building a simple rust library for these targets to make sure the tooling works, and it seemed to work.

[mikelodder7]

Not sure what it would be either. Do you have any notes from your investigation?

[tmarkovski]

Some. It only happens for cdylib target types, works fine for rlib and staticlib.
It is related to the clang issue I linked above, but based on the comments it seems the fix should have made it in the nightly cc-rs, but maybe it hasn't.

rust-lang/rust#96392

[mikelodder7]

Ah that probably means a dynamo library is missing from the system. Could be a version of Xcode. I’ll look into it