Compare win/linux builds

.github/workflows/build.yaml

@@ -27,15 +27,15 @@ jobs:
         Start-Process -wait -FilePath "sdcc_setup.exe" -ArgumentList "/S", "/D=C:\Program Files\SDCC"
         echo "Adding sdcc to PATH"
         Add-Content $env:GITHUB_PATH "C:\Program Files\SDCC\bin"
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Build
       run: |
         cd src/controller
         ../../tools/cygwin/bin/make.exe clean
         ../../tools/cygwin/bin/make.exe CFLAGS=--Werror
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
-        name: firmware
+        name: firmware_from_windows
         path: bin/main.ihx
 
 
@@ -51,13 +51,39 @@ jobs:
            sudo cp -r * /usr/local
            sdcc --version
            sdcc --print-search-dirs
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Build
         run: |
           cd src/controller
           make clean
           make CFLAGS=--Werror
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
-          name: firmware
+          name: firmware_from_linux
           path: bin/main.ihx
+
+
+  Compare_builds:
+    needs: [Build_Windows, Build_Linux]
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Download Windows build
+        uses: actions/download-artifact@v4
+        with:
+          name: firmware_from_windows
+          path: firmware_from_windows
+      - name: Download Linux build
+        uses: actions/download-artifact@v4
+        with:
+          name: firmware_from_linux
+          path: firmware_from_linux
+      - name: Compare build files
+        run: |
+          ls -l
+          echo "Comparing build files"
+          diff -q -y -Z firmware_from_windows/main.ihx firmware_from_linux/main.ihx
+          if [ $? -eq 0 ]; then
+            echo "Builds are identical"
+          else
+            echo "Linux/Windows builds are different"
+            exit 1