Add Windows CI for Java interoperability branch

.github/workflows/windows-java.yml

@@ -0,0 +1,113 @@
+name: Windows MSYS2 with Java interoperability
+
+on:
+  pull_request:
+    branches: [ java-interop ]
+  push:
+    branches: [ java-interop-ci4windows ]
+  # manual run in actions tab - for all branches
+  workflow_dispatch:
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - windows-latest
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install packages
+        uses: msys2/setup-msys2@v2
+        with:
+          update: true
+          install: autoconf automake libtool make mingw-w64-x86_64-ncurses mingw-w64-x86_64-libxml2 mingw-w64-x86_64-cjson mingw-w64-x86_64-db mingw-w64-x86_64-gmp libdb-devel mingw-w64-x86_64-gcc flex bison gmp-devel help2man texinfo gettext-devel
+
+      - name: Set git user
+        run: |
+          git config --global user.name github-actions
+          git config --global user.email github-actions-bot@users.noreply.github.com
+
+      - name: bootstrap
+        run: |
+          ./autogen.sh
+          autoconf
+          autoreconf --install --force
+        shell: msys2 {0}
+
+      - name: Build environment setup
+        run: |
+          mkdir _build
+          echo "JAVA_HOME=$JAVA_HOME"
+          echo "export PATH=\"$(cygpath -u "$JAVA_HOME")/bin:\$PATH\"" >> ~/.bash_profile
+        shell: msys2 {0}
+
+      - name: configure
+        run: |
+          cd _build
+          echo "$PATH"
+          java_home="$(cygpath -u "$JAVA_HOME")"
+          # thanks @revelator & @GitMensch ;-)
+          # (cf https://github.com/msys2/MINGW-packages/discussions/8056)
+          lt_cv_deplibs_check_method=pass_all \
+          ../configure --enable-cobc-internal-checks \
+                       --enable-hardening \
+                       --prefix /opt/cobol/gnucobol \
+                       --exec-prefix /opt/cobol/gnucobol \
+                       --with-java \
+                       JAVA_HOME="$java_home" \
+                       JAVA="$java_home/bin/java" \
+                       JAVAC="$java_home/bin/javac"
+        shell: msys2 {0}
+
+      - name: Upload config.log
+        uses: actions/upload-artifact@v4
+        # if: failure()
+        with:
+          name: config-${{ matrix.os }}.log
+          path: _build/config.log
+
+      - name: make
+        run: |
+          make -C _build --jobs=$(($(nproc)+1))
+        shell: msys2 {0}
+
+      - name: Java runtime setup
+        shell: msys2 {0}
+        run: |
+          # Be sure to have `jvm.dll` in path for tests with JNI below
+          jvmdir="$(dirname $(find "$JAVA_HOME" -name jvm.dll))"
+          echo "$(find "$JAVA_HOME" -name jvm.dll)"
+          echo "$jvmdir"
+          echo "export PATH=\"$(cygpath -u "$jvmdir"):\$PATH\"" >> ~/.bash_profile
+          echo "export TERM=dumb" >> ~/.bash_profile # <- NB: I know it's weird
+
+      - name: check
+        continue-on-error: true
+        run: |
+          make -C _build check TESTSUITEFLAGS="--jobs=$(($(nproc)+1))"
+        shell: msys2 {0}
+
+      - name: Upload testsuite.log
+        uses: actions/upload-artifact@v4
+        with:
+          name: testsuite-${{ matrix.os }}.log
+          path: _build/tests/testsuite.log
+
+      - name: install
+        run: |
+          make -C _build install
+          find /opt/cobol > _build/install.log
+        shell: msys2 {0}
+
+      - name: Upload install.log
+        uses: actions/upload-artifact@v4
+        with:
+          name: install-${{ matrix.os }}.log
+          path: _build/install.log