Run the macOS runners on Apple Silicon.

.github/workflows/ci-macos.yml

@@ -7,7 +7,7 @@ on:
 jobs:
   build:
     if: "!contains(github.event.head_commit.message, '[skip macos ci]')"
-    runs-on: macos-12
+    runs-on: macos-14
     env:
       HOMEBREW_NO_AUTO_UPDATE: 1
       HOMEBREW_NO_INSTALL_CLEANUP: 1
@@ -17,6 +17,11 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Prepare the build environment
+        run: |
+          echo "CPPFLAGS=-I$(brew --prefix)/include" >> $GITHUB_ENV
+          echo "LDFLAGS=-L$(brew --prefix)/lib" >> $GITHUB_ENV
+
       - name: Install dependencies
         run: |
           brew update || true