Attempt to build OpenSSL for arm64 on Windows (#686)

Author: alex

.github/workflows/build-windows-openssl.yml

@@ -20,12 +20,15 @@ on:
 
 jobs:
   build:
-    runs-on: windows-latest
+    runs-on: ${{ matrix.ARCH.RUNNER }}
     strategy:
       fail-fast: false
       matrix:
-        ARCH: ["win32", "win64"]
-    name: "Build OpenSSL for ${{ matrix.ARCH }} on MSVC 2022"
+        ARCH:
+          - {ARCH: "win32", RUNNER: "windows-latest"}
+          - {ARCH: "win64", RUNNER: "windows-latest"}
+          - {ARCH: "arm64", RUNNER: "windows-11-arm"}
+    name: "Build OpenSSL for ${{ matrix.ARCH.ARCH }} on MSVC 2022"
     steps:
       - uses: actions/checkout@v4.2.2
         with:
@@ -47,9 +50,9 @@ jobs:
         shell: powershell
       - run: '"C:\Program Files\WinRAR\WinRAR.exe" -INUL x openssl-latest.tar.gz'
         shell: cmd
-      - run: windows\openssl\build_openssl.bat ${{ matrix.ARCH }}
+      - run: windows\openssl\build_openssl.bat ${{ matrix.ARCH.ARCH }}
         shell: cmd
       - uses: actions/upload-artifact@v4.6.2
         with:
-          name: "openssl-${{ matrix.ARCH }}"
+          name: "openssl-${{ matrix.ARCH.ARCH }}"
           path: build\

windows/openssl/build_openssl.bat

@@ -10,11 +10,16 @@ if "%BUILDARCH%" == "win32" (
     CALL "C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" x86
 
     perl Configure %OPENSSL_BUILD_FLAGS_WINDOWS% VC-WIN32
-) else (
+) else if "%BUILDARCH%" == "win64" (
     CALL "C:\Program Files\Microsoft Visual Studio\2022\Enterprise\BuildTools\Common7\Tools\VsDevCmd.bat" -arch=x64
     CALL "C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" x64
 
     perl Configure %OPENSSL_BUILD_FLAGS_WINDOWS% VC-WIN64A
+) else if "%BUILDARCH%" == "arm64" (
+    CALL "C:\Program Files\Microsoft Visual Studio\2022\Enterprise\BuildTools\Common7\Tools\VsDevCmd.bat" -arch=arm64
+    CALL "C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" arm64
+
+    perl Configure %OPENSSL_BUILD_FLAGS_WINDOWS% VC-WIN64-ARM
 )
 
 jom