github workflow: add msys2

.github/workflows/ci.yml

@@ -72,3 +72,38 @@ jobs:
       - name: Test
         run: |
           fdkaac -b 128 -R -o /dev/null /dev/null
+
+  msys2:
+    runs-on: windows-latest
+    strategy:
+      matrix:
+        sys: [ clang32, clang64, mingw32, mingw64, ucrt64 ]
+    defaults:
+      run:
+        shell: msys2 {0}
+    steps:
+      - name: Setup msys2
+        uses: msys2/setup-msys2@v2
+        with:
+          msystem: ${{ matrix.sys }}
+          update: true
+          install: git
+          pacboy: >-
+            autoconf:
+            automake:
+            libtool:
+            make:
+            cc:p
+            pkg-config:p
+            fdk-aac:p
+      - name: Checkout
+        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