Changes required for using MacOS ARM agents instead of x86 (#998)

skiko/buildSrc/src/main/kotlin/tasks/configuration/JvmTasksConfiguration.kt

@@ -455,6 +455,7 @@ fun SkikoProjectContext.createSkikoJvmJarTask(os: OS, arch: Arch, commonJar: Tas
         val createChecksums2 = createChecksumsTask(os, altArch, nativeLib2)
         nativeFiles.add(nativeLib2)
         nativeFiles.add(createChecksums2.map { it.outputs.files.singleFile })
+        allJvmRuntimeJars[os to altArch] = skikoJvmRuntimeJarTask(os, altArch, commonJar, nativeFiles)
     }
     val skikoJvmRuntimeJar = skikoJvmRuntimeJarTask(os, arch, commonJar, nativeFiles)
     allJvmRuntimeJars[os to arch] = skikoJvmRuntimeJar

skiko/buildSrc/src/main/kotlin/tasks/configuration/NativeTasksConfiguration.kt

@@ -31,6 +31,21 @@ fun String.withSuffix(isUikitSim: Boolean = false) =
 fun KotlinTarget.isUikitSimulator() =
     name.contains("Simulator", ignoreCase = true) || name == "tvosX64" // x64 tvOS is implicitly a simulator
 
+fun Project.findXcodeSdkRoot(): String {
+    val defaultPath = "/Applications/Xcode.app/Contents/Developer/Platforms"
+    if (File(defaultPath).exists()) {
+        return defaultPath.also {
+            println("findXcodeSdkRoot = $it")
+        }
+    }
+
+    return (project.property("skiko.ci.xcodehome") as? String)?.let {
+        val sdkPath = it + "/Platforms"
+        println("findXcodeSdkRoot = $sdkPath")
+        sdkPath
+    } ?: error("gradle property `skiko.ci.xcodehome` is not set")
+}
+
 fun SkikoProjectContext.compileNativeBridgesTask(
     os: OS, arch: Arch, isUikitSim: Boolean
 ): TaskProvider<CompileSkikoCppTask> = with (this.project) {
@@ -52,7 +67,7 @@ fun SkikoProjectContext.compileNativeBridgesTask(
 
         when (os) {
             OS.IOS -> {
-                val sdkRoot = "/Applications/Xcode.app/Contents/Developer/Platforms"
+                val sdkRoot = findXcodeSdkRoot()
                 val iphoneOsSdk = "$sdkRoot/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk"
                 val iphoneSimSdk = "$sdkRoot/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk"
                 val iosArchFlags = when (arch) {
@@ -76,7 +91,7 @@ fun SkikoProjectContext.compileNativeBridgesTask(
                 ))
             }
             OS.TVOS -> {
-                val sdkRoot = "/Applications/Xcode.app/Contents/Developer/Platforms"
+                val sdkRoot = findXcodeSdkRoot()
                 val tvOsSdk = "$sdkRoot/AppleTVOS.platform/Developer/SDKs/AppleTVOS.sdk"
                 val tvSimSdk = "$sdkRoot/AppleTVSimulator.platform/Developer/SDKs/AppleTVSimulator.sdk"
                 val tvosArchFlags = when (arch) {