rust 1.74+ needs a newer macos SDK

[mleduque]

It seems from 1.74 the minimum SDK version for macos is v10.12.

rust-lang/rust#104385
https://blog.rust-lang.org/2023/11/16/Rust-1.74.0.html

The current version of rust-build uses 10.10 (AFAIK)

[lcmgh]

Is that related to errors such as

 = note: ld: warning: object file (/tmp/rustcZt9O7X/symbols.o) was built for newer macOS version (10.12) than being linked (10.8)

?

[mleduque]

I think it is.
In my case, I had those warnings but I also had a build failure because I had getrandom as transitive dep and https://github.com/rust-random/getrandom/blob/master/CHANGELOG.md#0212---2024-01-09 states

Raise minimum supported Apple OS versions to macOS 10.12 and iOS 10 rust-random/getrandom#388

[Odonno]

I can confirm that it works with Rust 1.74 but it won't with a later version. Hope we will not be locked on this version for a long period of time.

[jorgecarleitao]

Unfortunately we do not have the tarballs for 10.12 in https://s3.dockerproject.org/ yet (which we use in

rust-build.action/Dockerfile

Line 17 in 6febf1b

RUN curl -Lo /opt/osxcross/tarballs/MacOSX10.10.sdk.tar.xz "https://s3.dockerproject.org/darwin/v2/MacOSX10.10.sdk.tar.xz"

@Douile , do you know how these tarballs are created and uploaded to s3.dockerproject.org?

[Douile]

I believe it was found in a blog post (unlikely to get updated). New ones could possibly be sourced from https://github.com/joseluisq/macosx-sdks?tab=readme-ov-file