Add CI job to build nativeruntime for Windows

.github/workflows/build_native_runtime.yml

@@ -12,33 +12,56 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-18.04, macos-latest, self-hosted]
+        os: [ubuntu-18.04, macos-latest, self-hosted, windows-2019]
     steps:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0
           submodules: recursive
 
-      - name: Set up JDK 11.0.8
+      # msys2 only log not fail on non-Windows platform.
+      - uses: msys2/setup-msys2@v2
+        with:
+          msystem: mingw64
+          update: true
+          platform-check-severity: warn
+          location: D:\
+          install: >-
+            make
+            mingw-w64-x86_64-gcc
+            mingw-w64-x86_64-ninja
+            mingw-w64-x86_64-cmake
+            mingw-w64-x86_64-make
+
+      - name: Set up JDK 11
         uses: actions/setup-java@v1
         with:
-          java-version: 11.0.8
+          java-version: 11
 
-      - name: Install Ninja (Mac OS)
-        if: runner.os =='macOS'
+      - name: Install build tools (Mac OS)
+        if: runner.os == 'macOS'
         run: brew install ninja
 
-      - name: Install Ninja (Linux)
-        if: runner.os =='Linux'
+      - name: Install build tools (Linux)
+        if: runner.os == 'Linux'
         run: sudo apt-get install ninja-build
 
-      - name: Cache ICU build output
+      - name: Cache ICU build output (Non Windows)
         id: cache-icu
         uses: actions/cache@v2
+        if: runner.os == 'Linux' || runner.os == 'macOS'
         with:
           path: ~/icu-bin
           key: ${{ runner.os }}-${{ runner.arch }}-icu-${{ hashFiles('nativeruntime/external/icu/**') }}
 
+      - name: Cache ICU build output (Windows)
+        id: cache-icu-windows
+        uses: actions/cache@v2
+        if: runner.os == 'Windows'
+        with:
+          path: D:\msys64\home\runneradmin\icu-bin
+          key: ${{ runner.os }}-${{ runner.arch }}-icu-windows-${{ hashFiles('nativeruntime/external/icu/**') }}
+
       - name: Build ICU for MacOS
         if: runner.os =='macOS' && steps.cache-icu.outputs.cache-hit != 'true'
         run: |
@@ -57,7 +80,26 @@ jobs:
           make -j4
           make install
 
-      - name: Run CMake
+      - name: Build ICU for Windows
+        if: runner.os == 'Windows' && steps.cache-icu-windows.outputs.cache-hit != 'true'
+        shell: msys2 {0}
+        run: |
+          cd nativeruntime/external/icu/icu4c/source
+          ./runConfigureICU MinGW --enable-static --prefix=$HOME/icu-bin
+          make -j4
+          make install
+
+      - name: Run CMake (Non Windows)
+        if: runner.os == 'Linux' || runner.os == 'macOS'
+        run: |
+          mkdir build
+          cd build
+          ICU_ROOT_DIR=$HOME/icu-bin cmake -B . -S ../nativeruntime/cpp -G Ninja
+          ninja
+
+      - name: Run CMake (Windows)
+        if: runner.os == 'Windows'
+        shell: msys2 {0}
         run: |
           mkdir build
           cd build
@@ -76,9 +118,24 @@ jobs:
           echo "NATIVERUNTIME_ARTIFACT_FILE=librobolectric-nativeruntime-mac-$(uname -m).dylib" >> $GITHUB_ENV
           mv build/libnativeruntime.dylib build/librobolectric-nativeruntime-mac-$(uname -m).dylib
 
-      - name: Upload libnativeruntime
+      - name: Rename libnativeruntime for Windows
+        if: runner.os == 'Windows'
+        shell: msys2 {0}
+        run: |
+          mv build/libnativeruntime.dll build/robolectric-nativeruntime-windows-x86_64.dll
+
+      - name: Upload libnativeruntime (Non Windows)
+        if: runner.os == 'Linux' || runner.os == 'macOS'
         uses: actions/upload-artifact@v2
         with:
           name: ${{env.NATIVERUNTIME_ARTIFACT_FILE}}
           path: |
             build/${{env.NATIVERUNTIME_ARTIFACT_FILE}}
+
+      - name: Upload libnativeruntime (Windows)
+        if: runner.os == 'Windows'
+        uses: actions/upload-artifact@v2
+        with:
+          name: robolectric-nativeruntime-windows-x86_64.dll
+          path: |
+            build/robolectric-nativeruntime-windows-x86_64.dll