Add comprehensive Windows build debugging and error handling

CMakeLists.txt:
- Enable all ExternalProject logging flags
- Add BUILD_ALWAYS to force rebuild and capture all output
- Add Windows-specific verification commands for libatari800.a

GitHub Actions:
- Add MSBuild diagnostic verbosity and detailed logging
- Add fallback logic to continue build if libatari800 exists despite errors
- Add comprehensive error checking and library verification

Should provide detailed insight into the MSBuild integration issue

Author: pedgarcia

.github/workflows/build-windows.yml

@@ -83,10 +83,32 @@ jobs:
           -DFUJISAN_VERSION="${{ github.event.inputs.version || 'dev' }}" `
           ..
 
-    - name: Build Fujisan
+    - name: Build Fujisan  
       run: |
         cd build-release
-        cmake --build . --config Release --parallel 4
+        echo "=== Building with enhanced MSBuild diagnostics ==="
+        echo "MSBuild version:"
+        msbuild -version
+        echo "=== Starting build with detailed logging ==="
+        
+        # Try build with detailed diagnostics
+        if (-not (cmake --build . --config Release --parallel 4 --verbose -- /verbosity:diagnostic /consoleloggerparameters:ShowTimestamp)) {
+            echo "=== First build attempt failed, checking atari800 status ==="
+            
+            # Check if libatari800 was actually built despite the error
+            if (Test-Path "atari800-src\src\libatari800.a") {
+                echo "SUCCESS: libatari800.a exists despite build error!"
+                Get-ChildItem "atari800-src\src\libatari800.a" | Format-List
+                
+                echo "=== Attempting to continue with Fujisan build only ==="
+                cmake --build . --config Release --target Fujisan --parallel 4 --verbose
+            } else {
+                echo "ERROR: libatari800.a was not created"
+                echo "Contents of atari800-src/src/:"
+                if (Test-Path "atari800-src\src") { Get-ChildItem "atari800-src\src" | Format-Table Name, Length }
+                throw "Build failed - libatari800.a not found"
+            }
+        }
 
     - name: Deploy Qt5 libraries
       run: |

CMakeLists.txt

@@ -92,10 +92,36 @@ ExternalProject_Add(atari800_external
     # No install step needed, we'll link directly to the library
     INSTALL_COMMAND ""
 
+    # Enhanced logging and debugging
+    LOG_DOWNLOAD ON
+    LOG_UPDATE ON
+    LOG_PATCH ON
+    LOG_CONFIGURE ON
+    LOG_BUILD ON
+    LOG_INSTALL ON
+    LOG_MERGED_STDOUTERR ON
+    LOG_OUTPUT_ON_FAILURE ON
+    
+    # Force rebuild to ensure we see all output
+    BUILD_ALWAYS ON
+    
     # Export the library location
     BUILD_BYPRODUCTS ${ATARI800_LIBRARY}
 )
 
+# Verify that the library was created successfully
+if(WIN32)
+    # Add custom command to verify library creation on Windows
+    add_custom_command(TARGET atari800_external POST_BUILD
+        COMMAND ${CMAKE_COMMAND} -E echo "=== Verifying libatari800 build on Windows ==="
+        COMMAND ${CMAKE_COMMAND} -E echo "Expected library: ${ATARI800_LIBRARY}"
+        COMMAND ${CMAKE_COMMAND} -E echo "Checking if library exists..."
+        COMMAND ${CMAKE_COMMAND} -E echo "$<IF:$<BOOL:$<TARGET_EXISTS:${ATARI800_LIBRARY}>>,Library found,Library NOT found>"
+        COMMAND ${MSYS2_BASH} -l -c "if [ -f '${ATARI800_LIBRARY}' ]; then echo 'SUCCESS: libatari800.a exists'; ls -la '${ATARI800_LIBRARY}'; else echo 'ERROR: libatari800.a missing'; ls -la '${ATARI800_SOURCE_DIR}/src/'; fi"
+        COMMENT "Verifying libatari800 library creation"
+    )
+endif()
+
 # Create imported target for libatari800
 add_library(libatari800 STATIC IMPORTED)
 set_target_properties(libatari800 PROPERTIES