Windows ARM in CI

Author: andrjohns

.github/workflows/main.yml

@@ -5,7 +5,7 @@ on:
   pull_request:
     branches: [ develop, master ]
   push:
-    branches: [ develop ]
+    branches: [ develop, winarm ]
     paths-ignore:
       - 'doygen/**'
       - 'hooks/**'
@@ -26,7 +26,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [windows-latest, ubuntu-24.04-arm]
+        os: [windows-11-arm, ubuntu-24.04-arm]
         config: [
           { label: misc, tests: 'test/unit/*_test.cpp test/unit/math/*_test.cpp test/unit/math/memory' },
           { label: prim, tests: 'test/unit/math/prim' },
@@ -49,7 +49,7 @@ jobs:
 
     - name: Set path for Rtools45
       if: runner.os == 'Windows'
-      run: echo "C:/rtools45/usr/bin;C:/rtools45/x86_64-w64-mingw32.static.posix/bin" | Out-File -Append -FilePath $env:GITHUB_PATH -Encoding utf8
+      run: echo "C:/rtools45-aarch64/usr/bin;C:/rtools45-aarch64/aarch64-w64-mingw32.static.posix/bin" | Out-File -Append -FilePath $env:GITHUB_PATH -Encoding utf8
 
     - name: Build Math libs
       shell: pwsh
@@ -80,7 +80,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [windows-latest, ubuntu-24.04-arm]
+        os: [windows-11-arm, ubuntu-24.04-arm]
         group: [1, 2, 3, 4, 5]
 
     steps:
@@ -97,7 +97,7 @@ jobs:
 
     - name: Set path for Rtools45
       if: runner.os == 'Windows'
-      run: echo "C:/rtools45/usr/bin;C:/rtools45/x86_64-w64-mingw32.static.posix/bin" | Out-File -Append -FilePath $env:GITHUB_PATH -Encoding utf8
+      run: echo "C:/rtools45-aarch64/usr/bin;C:/rtools45-aarch64/aarch64-w64-mingw32.static.posix/bin" | Out-File -Append -FilePath $env:GITHUB_PATH -Encoding utf8
 
     - name: Build Math libs
       shell: pwsh