Use LiveKit's Rust SDK on Linux while continue using Swift SDK on Mac (…

…#21550)

Similar to #20826 but keeps the Swift implementation. There were quite a
few changes in the `call` crate, and so that code now has two variants.

Closes #13714

Release Notes:

- Added preliminary Linux support for voice chat and viewing
screenshares.

---------

Co-authored-by: Kirill Bulatov <mail4score@gmail.com>
Co-authored-by: Kirill Bulatov <kirill@zed.dev>
Co-authored-by: Mikayla <mikayla@zed.dev>

.cargo/config.toml

@@ -13,6 +13,12 @@ rustflags = ["-C", "link-arg=-fuse-ld=mold"]
 linker = "clang"
 rustflags = ["-C", "link-arg=-fuse-ld=mold"]
 
+[target.aarch64-apple-darwin]
+rustflags = ["-C", "link-args=-Objc -all_load"]
+
+[target.x86_64-apple-darwin]
+rustflags = ["-C", "link-args=-Objc -all_load"]
+
 # This cfg will reduce the size of `windows::core::Error` from 16 bytes to 4 bytes
 [target.'cfg(target_os = "windows")']
 rustflags = ["--cfg", "windows_slim_errors"]

.github/workflows/ci.yml

@@ -129,6 +129,7 @@ jobs:
         run: |
           cargo build --workspace --bins --all-features
           cargo check -p gpui --features "macos-blade"
+          cargo check -p workspace --features "livekit-cross-platform"
           cargo build -p remote_server
 
   linux_tests: