fix Windows and macOS symbol error

app/CMakeLists.txt

@@ -108,8 +108,8 @@ if (OAK_ENABLE_DYNAMIC_RENDER_BACKEND)
     common/filefunctions.h
     common/qtutils.cpp
     common/qtutils.h
-    config/config.cpp
-    config/config.h
+    common/xmlutils.cpp
+    common/xmlutils.h
     node/param.cpp
     node/param.h
     node/splitvalue.h
@@ -148,6 +148,7 @@ if (OAK_ENABLE_DYNAMIC_RENDER_BACKEND)
     render/opengl/openglrenderer.h
   )
   target_link_libraries(oakgl PRIVATE libolive-rendercore)
+  target_compile_definitions(oakgl PRIVATE OAK_RENDER_BACKEND_PLUGIN)
   set_target_properties(oakgl PROPERTIES
     OUTPUT_NAME oakgl
     LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}

app/render/opengl/openglrenderer.cpp

@@ -28,7 +28,9 @@
 #include <QRegularExpression>
 
 #include "common/filefunctions.h"
+#if !defined(OAK_RENDER_BACKEND_PLUGIN)
 #include "config/config.h"
+#endif
 #include "render/job/shaderjob.h"
 
 namespace olive
@@ -394,19 +396,23 @@ void OpenGLRenderer::Flush()
 {
 	GL_PREAMBLE;
 
+#if !defined(OAK_RENDER_BACKEND_PLUGIN)
 	if (OLIVE_CONFIG("UseGLFinish").toBool()) {
 		functions_->glFinish();
-	} else {
+		return;
+	}
+#endif
+
 #if defined(Q_OS_MAC)
-		// macOS uses Tile-Based Deferred Rendering (TBDR). glFlush() does not
-		// guarantee that tile memory has been written back to texture memory.
-		// Using glFinish() prevents partial tile corruption ("black ink" artifacts).
+	// The dynamically loaded OpenGL backend cannot depend on the editor Config
+	// singleton because that pulls UI/Core symbols into the plugin. This
+	// platform default also preserves the previous macOS-safe behavior for
+	// texture consumers on TBDR drivers.
 	functions_->glFinish();
 #else
 	functions_->glFlush();
 #endif
 }
-}
 
 // Adapts the generic Renderer output attachment hook to OpenGL's framebuffer
 // attachment path used by OFX OpenGL rendering.