macos-13 was deprecated by github so pinning the mac release to macos-15

Author: popmonkey

.github/workflows/macos-build.yml

@@ -92,8 +92,16 @@ jobs:
       # ---------------------------------------------------------
       - name: Configure CMake
         run: |
+          # Determine target architecture for CMake (x64 input -> x86_64 flag)
+          if [[ "${{ inputs.arch }}" == "x64" ]]; then
+            CMAKE_ARCH="x86_64"
+          else
+            CMAKE_ARCH="arm64"
+          fi
+
           cmake -B build \
             -DCMAKE_BUILD_TYPE=Release \
+            -DCMAKE_OSX_ARCHITECTURES="$CMAKE_ARCH" \
             -DCMAKE_PREFIX_PATH="${{ env.HIGHS_DIR }}" \
             -DCMAKE_INSTALL_PREFIX="${{ github.workspace }}/dist" \
             -DBUILD_SHARED_LIBS=OFF \

.github/workflows/macos-ci.yml

@@ -27,7 +27,7 @@ jobs:
       name: "macOS Intel (x64)"
       version: ${{ github.ref_name }}
       platform: "darwin"
-      os: macos-13
+      os: macos-15
       arch: x64
       asset_ext: tar.gz
       upload_assets: false
@@ -40,7 +40,7 @@ jobs:
       name: "macOS Apple Silicon (arm64)"
       version: ${{ github.ref_name }}
       platform: "darwin"
-      os: macos-14
+      os: macos-15
       arch: arm64
       asset_ext: tar.gz
       upload_assets: false

.github/workflows/macos-release.yml

@@ -12,8 +12,8 @@ jobs:
     strategy:
       matrix:
         include:
-          - { name: "macOS Intel (x64)",           platform: darwin,  os: macos-13,      arch: x64, asset_ext: tar.gz }
-          - { name: "macOS Apple Silicon (arm64)", platform: darwin,  os: macos-14,      arch: arm64, asset_ext: tar.gz }
+          - { name: "macOS Intel (x64)",           platform: darwin,  os: macos-15,      arch: x64, asset_ext: tar.gz }
+          - { name: "macOS Apple Silicon (arm64)", platform: darwin,  os: macos-15,      arch: arm64, asset_ext: tar.gz }
 
     uses: ./.github/workflows/macos-build.yml
     secrets: inherit