Initial AndroidBackend implementation (experimental)

Author: stackotter

Examples/Package.resolved

@@ -0,0 +1,12 @@
+#!/bin/bash
+app=$1
+ndk=/Users/stackotter/Library/Android/sdk/ndk/26.1.10909125
+build_api=24
+link_api=32
+target_arch=aarch64
+host=darwin-x86_64 # x86_64 even on apply silicon
+xcrun --toolchain swift swift build --swift-sdk ${target_arch}-unknown-linux-android${build_api} --product $app \
+  -Xswiftc -I${ndk}/toolchains/llvm/prebuilt/${host}/sysroot/usr/include/android \
+  -Xcc -fPIC
+
+/Library/Developer/Toolchains/swift-6.1.1-RELEASE.xctoolchain/usr/bin/swiftc -L /Users/stackotter/Desktop/Projects/SwiftCrossUI/SwiftCrossUI/Examples/.build/aarch64-unknown-linux-android24/debug -o /Users/stackotter/Desktop/Projects/SwiftCrossUI/SwiftCrossUI/Examples/.build/aarch64-unknown-linux-android24/debug/libCounterExample.so -emit-library -module-name CounterExample -Xlinker --defsym -Xlinker main=CounterExample_main -resource-dir /Users/stackotter/Library/org.swift.swiftpm/swift-sdks/swift-6.1-RELEASE-android-24-0.1.artifactbundle/swift-6.1-release-android-24-sdk/android-27c-sysroot/usr/lib/swift -Xclang-linker -resource-dir -Xclang-linker /Users/stackotter/Library/org.swift.swiftpm/swift-sdks/swift-6.1-RELEASE-android-24-0.1.artifactbundle/swift-6.1-release-android-24-sdk/android-27c-sysroot/usr/lib/swift/clang -Xlinker '-rpath=$ORIGIN' @/Users/stackotter/Desktop/Projects/SwiftCrossUI/SwiftCrossUI/Examples/.build/aarch64-unknown-linux-android24/debug/CounterExample.product/Objects.LinkFileList -target aarch64-unknown-linux-android24 -sdk /Users/stackotter/Library/org.swift.swiftpm/swift-sdks/swift-6.1-RELEASE-android-24-0.1.artifactbundle/swift-6.1-release-android-24-sdk/android-27c-sysroot -Xclang-linker -fuse-ld=lld -sdk /Users/stackotter/Library/org.swift.swiftpm/swift-sdks/swift-6.1-RELEASE-android-24-0.1.artifactbundle/swift-6.1-release-android-24-sdk/android-27c-sysroot -g -I/Users/stackotter/Library/Android/sdk/ndk/26.1.10909125/toolchains/llvm/prebuilt/darwin-x86_64/sysroot/usr/include/android

Examples/build_android.sh

@@ -70,6 +70,7 @@ let package = Package(
         .library(name: "WinUIBackend", type: libraryType, targets: ["WinUIBackend"]),
         .library(name: "DefaultBackend", type: libraryType, targets: ["DefaultBackend"]),
         .library(name: "UIKitBackend", type: libraryType, targets: ["UIKitBackend"]),
+        .library(name: "AndroidBackend", type: libraryType, targets: ["AndroidBackend"]),
         .library(name: "Gtk", type: libraryType, targets: ["Gtk"]),
         .library(name: "Gtk3", type: libraryType, targets: ["Gtk3"]),
         .executable(name: "GtkExample", targets: ["GtkExample"]),
@@ -110,6 +111,10 @@ let package = Package(
             url: "https://github.com/stackotter/swift-winui",
             revision: "1695ee3ea2b7a249f6504c7f1759e7ec7a38eb86"
         ),
+        .package(
+            url: "https://github.com/stackotter/Android",
+            revision: "9e86388d4147637d2d1cb41bed0d99a1d915952a"
+        ),
         // .package(
         //     url: "https://github.com/stackotter/TermKit",
         //     revision: "163afa64f1257a0c026cc83ed8bc47a5f8fc9704"
@@ -164,6 +169,10 @@ let package = Package(
                     name: "UIKitBackend",
                     condition: .when(platforms: [.iOS, .tvOS, .macCatalyst, .visionOS])
                 ),
+                .target(
+                    name: "AndroidBackend",
+                    condition: .when(platforms: [.android])
+                ),
             ]
         ),
         .target(name: "AppKitBackend", dependencies: ["SwiftCrossUI"]),
@@ -252,6 +261,15 @@ let package = Package(
             name: "WinUIInterop",
             dependencies: []
         ),
+        .target(
+            name: "AndroidBackend",
+            dependencies: [
+                "SwiftCrossUI",
+                "AndroidBackendShim",
+                .product(name: "AndroidKit", package: "Android"),
+            ]
+        ),
+        .target(name: "AndroidBackendShim"),
         // .target(
         //     name: "CursesBackend",
         //     dependencies: ["SwiftCrossUI", "TermKit"]