github workflow: add mac

.github/workflows/ci.yml

@@ -53,3 +53,22 @@ jobs:
           ./configure --host=${{ matrix.arch }}-w64-mingw32 --prefix=/usr/${{ matrix.arch }}-w64-mingw32
           make
           sudo make install
+
+  macos:
+    runs-on: macos-latest
+    steps:
+      - name: Install dependencies
+        run: |
+          brew install autoconf automake libtool pkg-config
+          brew install fdk-aac
+      - name: Checkout sources
+        uses: actions/checkout@v3
+      - name: Build
+        run: |
+          autoreconf -fiv
+          ./configure
+          make
+          make install
+      - name: Test
+        run: |
+          fdkaac -b 128 -R -o /dev/null /dev/null