Add support for adding this lib to multi-platform targets where only used for iOS

Author: Jeehut

Package.swift

@@ -1,28 +1,10 @@
-// swift-tools-version:5.3
-// The swift-tools-version declares the minimum version of Swift required to build this package.
-
+// swift-tools-version:5.9
 import PackageDescription
 
 let package = Package(
     name: "CodeScanner",
-    platforms: [
-      .iOS(.v13)
-    ],
-    products: [
-        // Products define the executables and libraries produced by a package, and make them visible to other packages.
-        .library(
-            name: "CodeScanner",
-            targets: ["CodeScanner"]),
-    ],
-    dependencies: [
-        // Dependencies declare other packages that this package depends on.
-        // .package(url: /* package url */, from: "1.0.0"),
-    ],
-    targets: [
-        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
-        // Targets can depend on other targets in this package, and on products in packages which this package depends on.
-        .target(
-            name: "CodeScanner",
-            dependencies: []),
-    ]
+    platforms: [.iOS(.v13), .macOS(.v10_15), .tvOS(.v13), .visionOS(.v1), .watchOS(.v6)],
+    products: [.library(name: "CodeScanner", targets: ["CodeScanner"])],
+    dependencies: [],
+    targets: [.target(name: "CodeScanner", dependencies: [])]
 )

Sources/CodeScanner/AVCaptureDevice+bestForBuiltInCamera.swift

@@ -6,6 +6,7 @@
 //  Copyright © 2024 Paul Hudson. All rights reserved.
 //
 
+#if os(iOS)
 import AVFoundation
 
 @available(macCatalyst 14.0, *)
@@ -79,6 +80,7 @@ private extension Float {
         self * Float.pi / 180
     }
 }
+#endif
 
 /*
  Part of this code is copied from Apple sample project "AVCamBarcode: Using AVFoundation to capture barcodes".

Sources/CodeScanner/CodeScanner.swift

@@ -6,6 +6,7 @@
 //  Copyright © 2021 Paul Hudson. All rights reserved.
 //
 
+#if os(iOS)
 import AVFoundation
 import SwiftUI
 
@@ -153,3 +154,4 @@ struct CodeScannerView_Previews: PreviewProvider {
         }
     }
 }
+#endif

Sources/CodeScanner/ScannerViewController.swift

@@ -6,6 +6,7 @@
 //  Copyright © 2021 Paul Hudson. All rights reserved.
 //
 
+#if os(iOS)
 import AVFoundation
 import UIKit
 
@@ -594,3 +595,4 @@ public extension AVCaptureDevice {
     }
 
 }
+#endif