[CI] Add support for GitHub Actions

.github/workflows/pull_request.yml

@@ -0,0 +1,19 @@
+name: Pull request
+
+on:
+  pull_request:
+    types: [opened, reopened, synchronize]
+
+jobs:
+  tests:
+    name: Test
+    uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
+    with:
+      linux_exclude_swift_versions: '[{"swift_version": "5.9"}, {"swift_version": "5.10"}]'
+      linux_pre_build_command: apt-get update && apt-get install -y libsqlite3-dev libncurses5-dev
+      windows_exclude_swift_versions: '[{"swift_version": "5.9"}, {"swift_version": "5.10"}]'
+  soundness:
+    name: Soundness
+    uses: swiftlang/github-workflows/.github/workflows/soundness.yml@main
+    with:
+       license_header_check_project_name: "Swift"

.license_header_template

@@ -0,0 +1,11 @@
+@@===----------------------------------------------------------------------===@@
+@@
+@@ This source file is part of the Swift open source project
+@@
+@@ Copyright (c) YEARS Apple Inc. and the Swift project authors
+@@ Licensed under Apache License v2.0 with Runtime Library Exception
+@@
+@@ See http://swift.org/LICENSE.txt for license information
+@@ See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+@@
+@@===----------------------------------------------------------------------===@@

.licenseignore

@@ -0,0 +1,12 @@
+**/*.mlmodel
+**/*.pbxproj
+**/*.png
+**/*.strings
+**/*.xcbuildrules
+**/*.xcspec
+**/*.xcworkspacedata
+**/Package.swift
+.dir-locals.el
+.editorconfig
+CODEOWNERS
+Package.swift

Tests/SWBCoreTests/ProductTypesTests.swift

@@ -1,9 +1,14 @@
+//===----------------------------------------------------------------------===//
 //
-//  ProductTypesTests.swift
-//  SWBCoreTests
+// This source file is part of the Swift open source project
 //
-//  Copyright © 2024 Apple Inc. All rights reserved.
+// Copyright (c) 2025 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
 //
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
 
 import Testing
 

Tests/SwiftBuildTests/TestData/CommandLineTool/CommandLineTool/main.c

@@ -1,3 +1,15 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift open source project
+//
+// Copyright (c) 2025 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+
 int main() {
     return 0;
 }

Tests/SwiftBuildTests/TestData/CommandLineToolPackage/Sources/CommandLineToolPackage/main.swift

@@ -0,0 +1,12 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift open source project
+//
+// Copyright (c) 2025 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===----------------------------------------------------------------------===//
+

Utilities/swift-ci-perf-tests.sh

@@ -1,4 +1,15 @@
-#!/usr/bin/env bash
+#!/bin/bash
+##===----------------------------------------------------------------------===##
+##
+## This source file is part of the Swift open source project
+##
+## Copyright (c) 2025 Apple Inc. and the Swift project authors
+## Licensed under Apache License v2.0 with Runtime Library Exception
+##
+## See http://swift.org/LICENSE.txt for license information
+## See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+##
+##===----------------------------------------------------------------------===##
 
 set -euo pipefail