chore: Build whole workspace on macos (#10228)

- Add some macos stubs to gui-smoke-test.
- Hide `ebpf-turn-router` binary functionality behind `#[cfg(target_arch
= "bpf")]`

Signed-off-by: Mariusz Klochowicz <mariusz@klochowicz.com>

rust/relay/ebpf-turn-router/Cargo.toml

@@ -4,6 +4,11 @@ version = "0.1.0"
 edition = { workspace = true }
 license = { workspace = true }
 
+[package.metadata.cargo-udeps.ignore]
+normal = ["aya-ebpf", "aya-log-ebpf", "ebpf-shared", "network-types"]
+build = ["which"]
+development = ["hex-literal", "ip-packet"]
+
 [[bin]]
 name = "ebpf-turn-router-main" # This needs to be different from the package name otherwise the build-script fails to differentiate between the directory it is built in and the actual binary.
 path = "src/main.rs"

rust/relay/ebpf-turn-router/build.rs

@@ -1,5 +1,3 @@
-use which::which;
-
 /// Building this crate has an undeclared dependency on the `bpf-linker` binary. This would be
 /// better expressed by [artifact-dependencies][bindeps] but issues such as
 /// https://github.com/rust-lang/cargo/issues/12385 make their use impractical for the time being.
@@ -11,7 +9,14 @@ use which::which;
 /// which would likely mean far too much cache invalidation.
 ///
 /// [bindeps]: https://doc.rust-lang.org/nightly/cargo/reference/unstable.html?highlight=feature#artifact-dependencies
+#[cfg(target_os = "linux")]
 fn main() {
+    use which::which;
     let bpf_linker = which("bpf-linker").expect("bpf-linker not found in $PATH");
     println!("cargo:rerun-if-changed={}", bpf_linker.to_str().unwrap());
 }
+
+#[cfg(not(target_os = "linux"))]
+fn main() {
+    println!("cargo:warning=eBPF is only supported on Linux, skipping bpf-linker check");
+}