## Issue `desktop_webview_window` fails to build for native Windows ARM64 Flutter apps. Flutter 3.44.1 auto-selects `windows-arm64` on Windows ARM hosts. The plugin target is then built as ARM64, but the plugin links the x64 WebView2 loader import library. ## Evidence Environment: ```text Flutter 3.44.1 Dart 3.12.1 Windows ARM64 host desktop_webview_window 0.3.0 ``` Build failure: ```text web_view.obj : error LNK2019: unresolved external symbol CreateCoreWebView2EnvironmentWithOptions web_view_window_plugin.obj : error LNK2019: unresolved external symbol GetAvailableCoreWebView2BrowserVersionString windows\flutter\ephemeral\.plugin_symlinks\desktop_webview_window\windows\libs\x64\Webview2Loader.dll.lib : warning LNK4272: library machine type 'x64' conflicts with target machine type 'ARM64' desktop_webview_window_plugin.dll : fatal error LNK1120: 2 unresolved externals ``` Current Windows CMake hardcodes x64: ```cmake add_library(Webview2 SHARED IMPORTED GLOBAL) SET_PROPERTY(TARGET Webview2 PROPERTY IMPORTED_LOCATION ${CMAKE_CURRENT_SOURCE_DIR}/libs/x64/Webview2Loader.dll) SET_PROPERTY(TARGET Webview2 PROPERTY IMPORTED_IMPLIB ${CMAKE_CURRENT_SOURCE_DIR}/libs/x64/Webview2Loader.dll.lib) ``` The package only includes: ```text windows/libs/x64/WebView2Loader.dll windows/libs/x64/WebView2Loader.dll.lib ``` ## Root Cause The plugin always links the x64 WebView2 loader import library, regardless of the Windows build architecture. On Windows ARM64 builds, MSVC cannot link an x64 `.lib` into an ARM64 plugin DLL, which produces `LNK4272` and unresolved WebView2 symbols. ## Suggested Fix Ship WebView2 loader binaries for all supported Windows architectures and select the correct directory from CMake. Suggested layout: ```text windows/libs/x64/WebView2Loader.dll windows/libs/x64/WebView2Loader.dll.lib windows/libs/arm64/WebView2Loader.dll windows/libs/arm64/WebView2Loader.dll.lib ``` Suggested CMake behavior: ```cmake if(CMAKE_GENERATOR_PLATFORM MATCHES "ARM64") set(WEBVIEW2_LOADER_ARCH "arm64") else() set(WEBVIEW2_LOADER_ARCH "x64") endif() set_property(TARGET Webview2 PROPERTY IMPORTED_LOCATION ${CMAKE_CURRENT_SOURCE_DIR}/libs/${WEBVIEW2_LOADER_ARCH}/WebView2Loader.dll) set_property(TARGET Webview2 PROPERTY IMPORTED_IMPLIB ${CMAKE_CURRENT_SOURCE_DIR}/libs/${WEBVIEW2_LOADER_ARCH}/WebView2Loader.dll.lib) ``` Microsoft ships the ARM64 WebView2 loader in the `Microsoft.Web.WebView2` NuGet package.