Fix for custom gtk widgets, need to use global namespace

source/bridges-ui/CarlaBridgeToolkitGtk.cpp

@@ -160,6 +160,7 @@ struct GtkLoader {
 # if defined(CARLA_OS_MAC)
             "libgtk-quartz-2.0.dylib",
             "libgtk-x11-2.0.dylib",
+            "/opt/homebrew/opt/gtk+/lib/libgtk-quartz-2.0.0.dylib",
             "/opt/local/lib/libgtk-quartz-2.0.dylib",
             "/opt/local/lib/libgtk-x11-2.0.dylib",
 # else
@@ -171,7 +172,7 @@ struct GtkLoader {
         for (size_t i=0; i<sizeof(filenames)/sizeof(filenames[0]); ++i)
         {
             filename = filenames[i];
-            if ((lib = lib_open(filename)) != nullptr)
+            if ((lib = lib_open(filename, true)) != nullptr)
                 break;
         }
 
@@ -303,8 +304,9 @@ public:
         CARLA_SAFE_ASSERT_RETURN(gtkWindow != nullptr,);
 
         GtkWidget* const widget((GtkWidget*)fPlugin->getWidget());
-        gtk.container_add(GTK_CONTAINER(fWindow), widget);
+        CARLA_SAFE_ASSERT_RETURN(widget != nullptr,);
 
+        gtk.container_add(GTK_CONTAINER(fWindow), widget);
         gtk.window_set_resizable(gtkWindow, options.isResizable);
         gtk.window_set_title(gtkWindow, options.windowTitle.buffer());
 

source/utils/CarlaLibUtils.hpp

@@ -35,15 +35,17 @@ typedef void* lib_t;
  * May return null, in which case "lib_error" has the error.
  */
 static inline
-lib_t lib_open(const char* const filename) noexcept
+lib_t lib_open(const char* const filename, const bool global = false) noexcept
 {
     CARLA_SAFE_ASSERT_RETURN(filename != nullptr && filename[0] != '\0', nullptr);
 
     try {
 #ifdef CARLA_OS_WIN
         return ::LoadLibraryA(filename);
+        // unused
+        (void)global;
 #else
-        return ::dlopen(filename, RTLD_NOW|RTLD_LOCAL);
+        return ::dlopen(filename, RTLD_NOW|(global ? RTLD_GLOBAL : RTLD_LOCAL));
 #endif
     } CARLA_SAFE_EXCEPTION_RETURN("lib_open", nullptr);
 }