Make dylib filename configurable in Info.plist for iOS (flutter/engine#3277)

engine/src/flutter/common/settings.h

@@ -26,6 +26,7 @@ struct Settings {
   std::string aot_vm_isolate_snapshot_file_name;
   std::string aot_instructions_blob_file_name;
   std::string aot_rodata_blob_file_name;
+  std::string application_library_path;
   std::string temp_directory_path;
   std::vector<std::string> dart_flags;
 

engine/src/flutter/runtime/dart_init.cc

@@ -399,12 +399,20 @@ void* _DartSymbolLookup(const char* symbol_name) {
     return nullptr;
   }
 
+  const char* application_library_path = kDartApplicationLibraryPath;
+  const Settings& settings = Settings::Get();
+  const std::string& application_library_path_setting =
+      settings.application_library_path;
+  if (!application_library_path_setting.empty()) {
+    application_library_path = application_library_path_setting.c_str();
+  }
+
   // First the application library is checked for the valid symbols. This
   // library may not necessarily exist. If it does exist, it is loaded and the
   // symbols resolved. Once the application library is loaded, there is
   // currently no provision to unload the same.
   void* symbol =
-      DartLookupSymbolInLibrary(symbol_name, kDartApplicationLibraryPath);
+      DartLookupSymbolInLibrary(symbol_name, application_library_path);
   if (symbol != nullptr) {
     return symbol;
   }

engine/src/flutter/shell/common/shell.cc

@@ -107,7 +107,8 @@ Shell::Shell() {
 
 Shell::~Shell() {}
 
-void Shell::InitStandalone(std::string icu_data_path) {
+void Shell::InitStandalone(std::string icu_data_path,
+                           std::string application_library_path) {
   TRACE_EVENT0("flutter", "Shell::InitStandalone");
 
   ftl::UniqueFD icu_fd(
@@ -126,6 +127,7 @@ void Shell::InitStandalone(std::string icu_data_path) {
   base::CommandLine& command_line = *base::CommandLine::ForCurrentProcess();
 
   blink::Settings settings;
+  settings.application_library_path = application_library_path;
 
   // Enable Observatory
   settings.enable_observatory =

engine/src/flutter/shell/common/shell.h

@@ -22,7 +22,8 @@ class Shell {
  public:
   ~Shell();
 
-  static void InitStandalone(std::string icu_data_path = "");
+  static void InitStandalone(std::string icu_data_path = "",
+                             std::string application_library_path = "");
   static void Init();
 
   static Shell& Shared();

engine/src/flutter/shell/platform/darwin/common/platform_mac.h

@@ -9,7 +9,10 @@
 
 namespace shell {
 
-void PlatformMacMain(int argc, const char* argv[], std::string icu_data_path);
+void PlatformMacMain(int argc,
+                     const char* argv[],
+                     std::string icu_data_path,
+                     std::string application_library_path);
 
 bool AttemptLaunchFromCommandLineSwitches(Engine* engine);
 

engine/src/flutter/shell/platform/darwin/common/platform_mac.mm

@@ -52,7 +52,10 @@ static void RedirectIOConnectionsToSyslog() {
 
 class EmbedderState {
  public:
-  EmbedderState(int argc, const char* argv[], std::string icu_data_path) {
+  EmbedderState(int argc,
+                const char* argv[],
+                std::string icu_data_path,
+                std::string application_library_path) {
 #if TARGET_OS_IPHONE
     // This calls crashes on MacOS because we haven't run Dart_Initialize yet.
     // See https://github.com/flutter/flutter/issues/4006
@@ -90,7 +93,7 @@ class EmbedderState {
     embedder_message_loop_->Attach();
 #endif
 
-    shell::Shell::InitStandalone(icu_data_path);
+    shell::Shell::InitStandalone(icu_data_path, application_library_path);
   }
 
   ~EmbedderState() {
@@ -106,12 +109,16 @@ class EmbedderState {
   FTL_DISALLOW_COPY_AND_ASSIGN(EmbedderState);
 };
 
-void PlatformMacMain(int argc, const char* argv[], std::string icu_data_path) {
+void PlatformMacMain(int argc,
+                     const char* argv[],
+                     std::string icu_data_path,
+                     std::string application_library_path) {
   static std::unique_ptr<EmbedderState> g_embedder;
   static std::once_flag once_main;
 
   std::call_once(once_main, [&]() {
-    g_embedder = WTF::MakeUnique<EmbedderState>(argc, argv, icu_data_path);
+    g_embedder = WTF::MakeUnique<EmbedderState>(argc, argv, icu_data_path,
+                                                application_library_path);
   });
 }
 

engine/src/flutter/shell/platform/darwin/desktop/main_mac.mm

@@ -32,7 +32,7 @@ void AttachMessageLoopToMainRunLoop(void) {
 int main(int argc, const char* argv[]) {
   [SkyApplication sharedApplication];
 
-  shell::PlatformMacMain(argc, argv, "");
+  shell::PlatformMacMain(argc, argv, "", "");
 
   base::CommandLine& command_line = *base::CommandLine::ForCurrentProcess();
   if (command_line.HasSwitch(shell::FlagForSwitch(shell::Switch::Help))) {

engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterViewController.mm

@@ -58,7 +58,10 @@ class PlatformMessageResponseDarwin : public blink::PlatformMessageResponse {
 void FlutterInit(int argc, const char* argv[]) {
   NSBundle* bundle = [NSBundle bundleForClass:[FlutterViewController class]];
   NSString* icuDataPath = [bundle pathForResource:@"icudtl" ofType:@"dat"];
-  shell::PlatformMacMain(argc, argv, icuDataPath.UTF8String);
+  NSString* libraryName =
+      [[NSBundle mainBundle] objectForInfoDictionaryKey:@"FLTLibraryPath"];
+  shell::PlatformMacMain(argc, argv, icuDataPath.UTF8String,
+                         libraryName != nil ? libraryName.UTF8String : "");
 }
 
 @implementation FlutterViewController {