[fix] resolve cross-platform build warnings

apps/android/app/build.gradle

@@ -1,27 +1,27 @@
 plugins { id 'com.android.application' }
 
 android {
-    namespace 'cn.crossdesk.mobile'
-    compileSdk 36
-    ndkVersion '28.2.13676358'
+    namespace = 'cn.crossdesk.mobile'
+    compileSdk = 36
+    ndkVersion = '28.2.13676358'
     defaultConfig {
-        applicationId 'cn.crossdesk.mobile'
-        minSdk 26
-        targetSdk 36
-        versionCode providers.gradleProperty('crossdeskVersionCode').get().toInteger()
-        versionName providers.gradleProperty('crossdeskVersionName').get()
+        applicationId = 'cn.crossdesk.mobile'
+        minSdk = 26
+        targetSdk = 36
+        versionCode = providers.gradleProperty('crossdeskVersionCode').get().toInteger()
+        versionName = providers.gradleProperty('crossdeskVersionName').get()
         ndk { abiFilters 'arm64-v8a' }
-        testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
+        testInstrumentationRunner = 'androidx.test.runner.AndroidJUnitRunner'
     }
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_17
-        targetCompatibility JavaVersion.VERSION_17
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
     }
     sourceSets.main.jniLibs.srcDirs = [layout.buildDirectory.dir('native')]
     sourceSets.main.assets.srcDirs += [layout.buildDirectory.dir('generated/notices')]
     sourceSets.androidTest.java.srcDirs = ['../test/android/java']
     sourceSets.androidTest.assets.srcDirs = ['../test/android/assets']
-    buildTypes.release { minifyEnabled false }
+    buildTypes.release { minifyEnabled = false }
     packaging.jniLibs.useLegacyPackaging = false
 }
 

apps/android/app/src/main/java/cn/crossdesk/mobile/MainActivity.java

@@ -118,6 +118,9 @@ public final class MainActivity extends Activity implements NativeSession.Listen
     private String serverKey(){return host+":"+port;}
     private void toast(String value){Toast.makeText(this,value,Toast.LENGTH_SHORT).show();}
     private void hideKeyboard(){((InputMethodManager)getSystemService(INPUT_METHOD_SERVICE)).hideSoftInputFromWindow(root.getWindowToken(),0);root.clearFocus();}
+    // Legacy inset handling also includes the IME on non-session pages. The
+    // decor-fitting call below is restricted to Android 11–14.
+    @SuppressWarnings("deprecation")
     private void installRoot(String nextPage,boolean dark){
         PageHost.Motion motion=PageHost.Motion.NONE;
         if(canvas!=null&&foreground&&!page.equals(nextPage)){
@@ -147,6 +150,8 @@ public final class MainActivity extends Activity implements NativeSession.Listen
         root.setFocusableInTouchMode(true);pageHost.show(canvas,motion);
         applySystemBars(dark);
     }
+    // Android 8–10 require system UI flags instead of WindowInsetsController.
+    @SuppressWarnings("deprecation")
     private void applySystemBars(boolean dark){
         if(android.os.Build.VERSION.SDK_INT>=30){
             android.view.WindowInsetsController controller=getWindow().getInsetsController();
@@ -302,7 +307,9 @@ public final class MainActivity extends Activity implements NativeSession.Listen
             rememberPassword=remember.isChecked();password.setText("");dialog.dismiss();begin(id,secret);
         });connect.setContentDescription(L10n.tr("确认连接"));sheet.addView(connect,ui.size(-1,48));
         ScrollView scroll=new ScrollView(this);scroll.addView(sheet);
-        dialog.setContentView(scroll);Window window=dialog.getWindow();if(window!=null){window.setBackgroundDrawableResource(android.R.color.transparent);window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);window.setDimAmount(.22f);}dialog.show();sizePasswordDialog();password.requestFocus();if(!error.isEmpty())password.setError(error);
+        // This floating dialog uses window-managed IME resizing on all supported APIs.
+        @SuppressWarnings("deprecation") int resizeMode=WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE;
+        dialog.setContentView(scroll);Window window=dialog.getWindow();if(window!=null){window.setBackgroundDrawableResource(android.R.color.transparent);window.setSoftInputMode(resizeMode);window.setDimAmount(.22f);}dialog.show();sizePasswordDialog();password.requestFocus();if(!error.isEmpty())password.setError(error);
         dialog.setOnDismissListener(d->{password.setText("");passwordDialog=null;});
     }
     private void sizePasswordDialog(){
@@ -715,6 +722,8 @@ public final class MainActivity extends Activity implements NativeSession.Listen
     private void navigateBack(){if(backAction==null)return;navigatingBack=true;try{backAction.run();}finally{navigatingBack=false;}}
     private void back(){if(controls!=null&&controls.closeKeyboard())return;pageHost.finish();if(session!=null){if(ready)confirmDisconnect();else end("");}else if(backAction!=null)navigateBack();else finish();}
     @Override public void onWindowFocusChanged(boolean focus){super.onWindowFocusChanged(focus);if(!focus)releaseKeys();else applySystemBars(ready);}
+    // API 26–32 use this callback; API 33+ registers OnBackInvokedCallback in onCreate.
+    @SuppressWarnings("deprecation")
     @android.annotation.SuppressLint("GestureBackNavigation") @Override public void onBackPressed(){back();}
     @Override public void onConfigurationChanged(Configuration config){
         super.onConfigurationChanged(config);

apps/android/app/src/main/java/cn/crossdesk/mobile/MobileUi.java

@@ -90,6 +90,8 @@ final class MobileUi {
         }
         @Override public void setAlpha(int alpha) { bitmapPaint.setAlpha(alpha);invalidateSelf(); }
         @Override public void setColorFilter(ColorFilter filter) { bitmapPaint.setColorFilter(filter);invalidateSelf(); }
+        // Drawable still requires this abstract method, including on API 26.
+        @SuppressWarnings("deprecation")
         @Override public int getOpacity() { return PixelFormat.TRANSLUCENT; }
     }
     @android.annotation.SuppressLint("ViewConstructor") // Programmatic icon primitive, not inflated from XML.

apps/desktop/src/gui/ui/file_browser.slint

@@ -601,6 +601,9 @@ export component FileBrowserWindow inherits Window {
     SurfaceSeparator { x: 0px; y: 0px; width: parent.width; }
     focus := FocusScope {
         focus-on-click: true;
+        // Window sizing is defined above. Keep its layout constraints separate
+        // from children whose dimensions adapt to the current window size.
+        x: 0px; y: 0px; width: root.width; height: root.height;
         key-pressed(event) => {
             if event.text == Key.Escape { root.cancel-drag(); return accept; }
             reject

apps/desktop/src/gui/ui/trusted_devices.slint

@@ -141,7 +141,6 @@ export component TrustedDevicesDialog inherits Rectangle {
             // Extend into the right margin to preserve the existing card width.
             width: parent.width - 56px + dialog.scrollbar-gutter;
             height: parent.height - 84px;
-            min-width: 0px; min-height: 0px;
             horizontal-scrollbar-policy: always-off;
             vertical-scrollbar-policy: as-needed;
             viewport-width: self.visible-width;

apps/desktop/src/platform/common/updater_posix.cpp

@@ -102,7 +102,11 @@ void Launch(const fs::path& executable, const std::vector<std::string>& argument
     }
     execv(executable.c_str(), argv.data());
     const int error = errno;
-    (void)write(errors[1], &error, sizeof(error));
+    // This small blocking pipe write is atomic. Retry signal interruptions so
+    // the parent cannot mistake a failed exec for a successful launch.
+    ssize_t written;
+    do { written = write(errors[1], &error, sizeof(error)); }
+    while (written < 0 && errno == EINTR);
     _exit(127);
   }
   close(errors[1]);

apps/desktop/src/platform/macos/input/keyboard/keyboard_capturer.h

@@ -17,16 +17,16 @@ namespace crossdesk {
 class PlatformKeyboardCapturer final : public KeyboardCapturer {
  public:
   PlatformKeyboardCapturer();
-  virtual ~PlatformKeyboardCapturer();
+  ~PlatformKeyboardCapturer() override;
 
  public:
-  virtual int Hook(OnKeyAction on_key_action, void* user_ptr);
-  virtual int Unhook();
+  int Hook(OnKeyAction on_key_action, void* user_ptr) override;
+  int Unhook() override;
   bool SupportsTextInput() const override { return true; }
   int SendTextCommand(const std::string& text) override;
-  virtual int SendKeyboardCommand(int key_code, bool is_down,
-                                  uint32_t scan_code = 0,
-                                  bool extended = false);
+  int SendKeyboardCommand(int key_code, bool is_down,
+                          uint32_t scan_code = 0,
+                          bool extended = false) override;
 
  private:
   CFMachPortRef event_tap_ = nullptr;

apps/desktop/src/platform/macos/input/mouse/mouse_controller.h

@@ -1,7 +1,7 @@
 /*
  * @Author: DI JUNKUN
  * @Date: 2023-12-14
- * Copyright (c) 2023 by DI JUNKUN, All Rights Reserved.
+ * Copyright (c) 2026 by DI JUNKUN, All Rights Reserved.
  */
 
 #ifndef _MOUSE_CONTROLLER_H_
@@ -20,15 +20,15 @@ namespace crossdesk {
 class PlatformMouseController final : public MouseController {
  public:
   PlatformMouseController();
-  virtual ~PlatformMouseController();
+  ~PlatformMouseController() override;
 
  public:
-  virtual int Init(std::vector<DisplayInfo> display_info_list);
-  virtual int Destroy();
-  virtual int SendMouseCommand(RemoteAction remote_action, int display_index);
+  int Init(std::vector<DisplayInfo> display_info_list) override;
+  int Destroy() override;
+  int SendMouseCommand(RemoteAction remote_action, int display_index) override;
   unsigned ReleasePressedButtons(unsigned mask = 7) override;
   void UpdateDisplayInfoList(
-      const std::vector<DisplayInfo>& display_info_list);
+      const std::vector<DisplayInfo>& display_info_list) override;
 
  private:
   struct ClickTracker {

apps/desktop/xmake/platform.lua

@@ -99,9 +99,6 @@ function setup_platform_settings()
 
         add_cxflags("-Wno-unused-variable")
     elseif is_os("macosx") then
-        if is_arch("x86_64") then
-            add_ldflags("-Wl,-ld_classic")
-        end
         add_cxflags("-Wno-unused-variable")
         add_frameworks("Cocoa", "CoreGraphics", "Metal", "QuartzCore", "IOKit",
             "IOSurface",

apps/desktop/xmake/targets.lua

@@ -1,6 +1,4 @@
 function setup_targets()
-    includes("deps/submodules", "deps/thirdparty")
-
     local crossdesk_version = get_config("CROSSDESK_VERSION") or "0.0.0"
     local version_define = "CROSSDESK_VERSION=\"" .. crossdesk_version .. "\""
     local windows_resource_defines = {

apps/ios/scripts/build_minirtc_ios.sh

@@ -196,7 +196,8 @@ fi
 # no second project definition to maintain.
 (
   cd "${WIRE_WORK_DIR}"
-  configure_xmake "${WIRE_WORK_DIR}" "${WIRE_BUILD_DIR}"
+  configure_xmake "${WIRE_WORK_DIR}" "${WIRE_BUILD_DIR}" \
+    --CROSSDESK_BUILD_DESKTOP=false --CROSSDESK_BUILD_CLI=false
   print "Building CrossDesk wire for ${SDK_NAME} (${MODE})"
   run_xmake b -P "${WIRE_WORK_DIR}" "${XMAKE_LOG_FLAGS[@]}" crossdesk_wire
 )

libs/controller/src/file_browser.cpp

@@ -9,6 +9,7 @@
 #include <fstream>
 #include <set>
 #include <stdexcept>
+#include <string_view>
 
 namespace crossdesk {
 namespace {
@@ -16,6 +17,9 @@ using Json = FileBrowser::Json;
 namespace fs = std::filesystem;
 constexpr size_t kPageEntries = 512;
 constexpr size_t kPageBytes = 45000;
+fs::path PathFromUtf8(std::string_view value) {
+  return fs::path(std::u8string(value.begin(), value.end()));
+}
 std::string Utf8(const fs::path& path) {
   const auto value = path.u8string();
   return {value.begin(), value.end()};
@@ -26,7 +30,7 @@ fs::path Home() {
 #else
   const auto* home = std::getenv("HOME");
 #endif
-  return home ? std::filesystem::u8path(home) : fs::current_path();
+  return home ? PathFromUtf8(home) : fs::current_path();
 }
 Json Failure(const std::string& reason) { return {{"ok", false}, {"error", reason}}; }
 template <typename FileTime>
@@ -76,7 +80,7 @@ std::string Text(const Json& value, const char* key) {
 }
 fs::path ExistingDirectory(const std::string& path) {
   if (path.empty()) throw std::runtime_error("invalid_path");
-  auto input = std::filesystem::u8path(path);
+  auto input = PathFromUtf8(path);
   if (!input.is_absolute()) throw std::runtime_error("invalid_path");
   std::error_code ec;
   auto result = fs::canonical(input, ec);
@@ -84,7 +88,7 @@ fs::path ExistingDirectory(const std::string& path) {
   return result;
 }
 fs::path Destination(const fs::path& root, const std::string& relative) {
-  auto path = std::filesystem::u8path(relative);
+  auto path = PathFromUtf8(relative);
   if (path.is_absolute() || path.has_root_name()) throw std::runtime_error("invalid_path");
   auto result = root;
   for (const auto& component : path) {
@@ -358,7 +362,7 @@ FileBrowser::Json FileBrowser::Directory(const std::string& value, const std::fu
       for (char drive = 'A'; drive <= 'Z'; ++drive) {
         const std::string root = std::string(1, drive) + ":\\";
         std::error_code ec;
-        if (fs::is_directory(std::filesystem::u8path(root), ec))
+        if (fs::is_directory(PathFromUtf8(root), ec))
           entries.push_back({{"name", root}, {"path", root}, {"directory", true}, {"size", 0}, {"modified", ""}, {"link", false}});
       }
 #else
@@ -514,7 +518,7 @@ void FileBrowser::Upload(const std::string& peer, const std::vector<std::string>
     };
     // Validate the entire selection before creating remote folders or sending.
     for (const auto& source : paths) {
-      auto path = std::filesystem::u8path(source);
+      auto path = PathFromUtf8(source);
       if (!path.is_absolute() || path.filename().empty()) throw std::runtime_error("invalid_path");
       add(path, path.filename());
       if (fs::is_directory(fs::symlink_status(path))) {

xmake.lua

@@ -86,6 +86,8 @@ if os.isdir(path.join(wire_dir, "tests")) then
 end
 
 if build_desktop then
+    includes(path.join(source_dir, "deps/submodules"),
+        path.join(source_dir, "deps/thirdparty"))
     setup_targets()
 end