Add support for Windows arm64 (#423)

.github/workflows/build_and_test.yaml

@@ -19,7 +19,7 @@ jobs:
         uses: ./.github/workflows/build_windows.yaml
         strategy:
             matrix:
-                arch: [x64, x86]
+                arch: [x64, x86, arm64]
         with:
             arch: ${{ matrix.arch }}
 

.github/workflows/build_windows.yaml

@@ -14,7 +14,7 @@ on:
             arch:
                 type: string
                 required: true
-                description: "The architecture to build for, one of 'x64' | 'x86'"
+                description: "The architecture to build for, one of 'x64' | 'x86' | 'arm64'"
             version:
                 type: string
                 required: false
@@ -45,6 +45,12 @@ jobs:
                           "target": "x86_64-pc-windows-msvc",
                           "dir": "x64"
                         },
+                        "arm64": {
+                          "target": "aarch64-pc-windows-msvc",
+                          "build-args": "--arm64",
+                          "arch": "amd64_arm64",
+                          "dir": "arm64"
+                        },
                         "x86": {
                           "target": "i686-pc-windows-msvc",
                           "build-args": "--ia32",
@@ -69,7 +75,7 @@ jobs:
             - name: Set up build tools
               uses: ilammy/msvc-dev-cmd@v1
               with:
-                  arch: ${{ inputs.arch }}
+                  arch: ${{ steps.config.outputs.arch || inputs.arch }}
 
             # ActiveTCL package on choco is from 2015,
             # this one is newer but includes more than we need

scripts/hak/target.ts

@@ -25,6 +25,7 @@ export type TargetId =
     | "universal-apple-darwin"
     | "i686-pc-windows-msvc"
     | "x86_64-pc-windows-msvc"
+    | "aarch64-pc-windows-msvc"
     | "i686-unknown-linux-musl"
     | "i686-unknown-linux-gnu"
     | "x86_64-unknown-linux-musl"
@@ -98,6 +99,13 @@ const x8664PcWindowsMsvc: WindowsTarget = {
     vcVarsArch: "amd64",
 };
 
+const aarch64WindowsMsvc: WindowsTarget = {
+    id: 'aarch64-pc-windows-msvc',
+    platform: 'win32',
+    arch: 'arm64',
+    vcVarsArch: 'arm64',
+};
+
 const x8664UnknownLinuxGnu: LinuxTarget = {
     id: "x86_64-unknown-linux-gnu",
     platform: "linux",
@@ -162,6 +170,7 @@ export const TARGETS: Record<TargetId, Target> = {
     // Windows
     "i686-pc-windows-msvc": i686PcWindowsMsvc,
     "x86_64-pc-windows-msvc": x8664PcWindowsMsvc,
+    'aarch64-pc-windows-msvc': aarch64WindowsMsvc,
     // Linux
     "i686-unknown-linux-musl": i686UnknownLinuxMusl,
     "i686-unknown-linux-gnu": i686UnknownLinuxGnu,