Linux Support

.github/workflows/ci.yml

@@ -16,6 +16,7 @@ jobs:
     uses: skiptools/actions/.github/workflows/skip-framework.yml@v1
     with:
       # disable export because there are currently problems with shared PCH module cache files with multi-module native export
+      runs-on: "['macos-15-intel', 'ubuntu-24.04']"
       run-export: false
       #run-local-tests: false
 

Sources/SkipAndroidBridge/AndroidBridgeBootstrap.swift

@@ -16,6 +16,25 @@ import Foundation
 @_exported import AndroidLogging
 #elseif canImport(OSLog)
 @_exported import OSLog
+#else
+// e.g., for Linux define a local logging stub
+class Logger {
+    let subsystem: String
+    let category: String
+
+    init(subsystem: String, category: String) {
+        self.subsystem = subsystem
+        self.category = category
+    }
+
+    func log(_ string: String) {
+        print("\(subsystem)/\(category): \(string)")
+    }
+
+    func debug(_ string: String) {
+        print("\(subsystem)/\(category): \(string)")
+    }
+}
 #endif
 #if canImport(AndroidLooper)
 @_exported import AndroidLooper
@@ -127,7 +146,7 @@ private func bootstrapFileManagerProperties(filesDir: String, cacheDir: String)
 }
 
 // URL.applicationSupportDirectory exists in Darwin's Foundation but not in Android's Foundation
-#if os(Android)
+#if !canImport(Darwin)
 // SKIP @nobridge
 extension URL {
     public static var applicationSupportDirectory: URL {

Sources/SkipAndroidBridge/AndroidBundle.swift

@@ -2,6 +2,10 @@
 // SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
 import Foundation
 
+#if os(Linux)
+// Bundle subclass does not build on Linux due to https://github.com/swiftlang/swift-corelibs-foundation/issues/5108
+public typealias AndroidBundle = Foundation.Bundle
+#else
 /// Override of native `Bundle` for Android that delegates to our `skip.foundation.Bundle` Kotlin object.
 open class AndroidBundle : Foundation.Bundle, @unchecked Sendable {
     #if os(Android) || ROBOLECTRIC
@@ -304,6 +308,7 @@ open class AndroidBundle : Foundation.Bundle, @unchecked Sendable {
     }
     #endif
 }
+#endif
 
 #if os(Android) || ROBOLECTRIC
 

Sources/SkipAndroidBridgeSamples/SkipAndroidBridgeSamples.swift

@@ -39,6 +39,11 @@ public func setStringDefault(name: String, value: String?) {
     UserDefaults.standard.set(value, forKey: name)
 }
 
+#if os(Linux)
+// workaround for missing LocalizedStringResource on Linux
+typealias LocalizedStringResource = AndroidLocalizedStringResource
+#endif
+
 public func localizedStringResourceLiteralKey() -> String {
     let literal: LocalizedStringResource = "literal"
     return literal.key

Tests/SkipAndroidBridgeSamplesTests/XCSkipTests.swift

@@ -1,7 +1,7 @@
 // Copyright 2024–2025 Skip
 // SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
 import Foundation
-#if os(macOS) // Skip transpiled tests only run on macOS targets
+#if os(macOS) || os(Linux)
 import SkipTest
 
 /// This test case will run the transpiled tests for the Skip module.

Tests/SkipAndroidBridgeTests/XCSkipTests.swift

@@ -1,7 +1,7 @@
 // Copyright 2024–2025 Skip
 // SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
 import Foundation
-#if os(macOS) // Skip transpiled tests only run on macOS targets
+#if os(macOS) || os(Linux)
 import SkipTest
 
 /// This test case will run the transpiled tests for the Skip module.