CI: install a version on Binaryen with stack-switching support

Author: vouillon

.github/workflows/build-wasm_of_ocaml.yml

@@ -33,11 +33,11 @@ jobs:
             separate_compilation: true
             jane_street_tests: false
             all_jane_street_tests: false
-          - os: windows-latest
-            ocaml-compiler: "5.2"
-            separate_compilation: true
-            jane_street_tests: true
-            all_jane_street_tests: true
+#          - os: windows-latest
+#            ocaml-compiler: "5.2"
+#            separate_compilation: true
+#            jane_street_tests: true
+#            all_jane_street_tests: true
           - os: ubuntu-latest
             ocaml-compiler: "5.2"
             separate_compilation: true
@@ -77,16 +77,53 @@ jobs:
         with:
           node-version: latest
 
+      - name: Restore cached binaryen
+        id: cache-binaryen
+        uses: actions/cache/restore@v4
+        with:
+          path: binaryen
+          key: ${{ runner.os }}-binaryen-stack-switching
+
+      - name: Checkout binaryen
+        if: steps.cache-binaryen.outputs.cache-hit != 'true'
+        uses: actions/checkout@v4
+        with:
+          repository: vouillon/binaryen
+          path: binaryen
+          submodules: true
+          ref: stack-switching-fixes
+
+      - name: Install ninja (Ubuntu)
+        if: matrix.os == 'ubuntu-latest' && steps.cache-binaryen.outputs.cache-hit != 'true'
+        run: sudo apt-get install ninja-build
+
+      - name: Install ninja (MacOS)
+        if: matrix.os == 'macos-latest' && steps.cache-binaryen.outputs.cache-hit != 'true'
+        run: brew install ninja
+
+      - name: Build binaryen
+        if: steps.cache-binaryen.outputs.cache-hit != 'true'
+        working-directory: ./binaryen
+        run: |
+          cmake -G Ninja .
+          ninja
+
+      - name: Cache binaryen
+        if: steps.cache-binaryen.outputs.cache-hit != 'true'
+        uses: actions/cache/save@v4
+        with:
+          path: binaryen
+          key: ${{ runner.os }}-binaryen-stack-switching
+
+      - name: Set binaryen's path
+        run: |
+          echo "$GITHUB_WORKSPACE/binaryen/bin" >> $GITHUB_PATH
+
       - name: Set-up OCaml ${{ matrix.ocaml-compiler }}
         uses: ocaml/setup-ocaml@v3
         with:
           ocaml-compiler: ${{ matrix.ocaml-compiler }}
 
-      - name: Set-up Binaryen
-        uses: Aandreba/setup-binaryen@v1.0.0
-        with:
-          token: ${{ github.token }}
-
       - name: Pin faked binaryen-bin package
         # It's faster to use a cached version
         run: opam install --fake binaryen-bin