diff --git a/shell/platform/linux/fl_basic_message_channel.cc b/shell/platform/linux/fl_basic_message_channel.cc
index 7b7c35a4ab49f..7d2b5afe60a6a 100644
--- a/shell/platform/linux/fl_basic_message_channel.cc
+++ b/shell/platform/linux/fl_basic_message_channel.cc
@@ -33,9 +33,6 @@ struct _FlBasicMessageChannelResponseHandle {
   FlBinaryMessengerResponseHandle* response_handle;
 };
 
-// Added here to stop the compiler from optimizing this function away.
-G_MODULE_EXPORT GType fl_basic_message_channel_get_type();
-
 G_DEFINE_TYPE(FlBasicMessageChannel, fl_basic_message_channel, G_TYPE_OBJECT)
 G_DEFINE_TYPE(FlBasicMessageChannelResponseHandle,
               fl_basic_message_channel_response_handle,
diff --git a/shell/platform/linux/fl_binary_messenger.cc b/shell/platform/linux/fl_binary_messenger.cc
index 63e42f71b36b5..7793e9df0040a 100644
--- a/shell/platform/linux/fl_binary_messenger.cc
+++ b/shell/platform/linux/fl_binary_messenger.cc
@@ -10,9 +10,6 @@
 
 #include <gmodule.h>
 
-// Added here to stop the compiler from optimizing this function away.
-G_MODULE_EXPORT GType fl_binary_messenger_get_type();
-
 G_DEFINE_QUARK(fl_binary_messenger_codec_error_quark,
                fl_binary_messenger_codec_error)
 
diff --git a/shell/platform/linux/fl_event_channel.cc b/shell/platform/linux/fl_event_channel.cc
index 008734789aec2..418acd89bfbbb 100644
--- a/shell/platform/linux/fl_event_channel.cc
+++ b/shell/platform/linux/fl_event_channel.cc
@@ -40,9 +40,6 @@ struct _FlEventChannelResponseHandle {
   FlBinaryMessengerResponseHandle* response_handle;
 };
 
-// Added here to stop the compiler from optimizing this function away.
-G_MODULE_EXPORT GType fl_event_channel_get_type();
-
 G_DEFINE_TYPE(FlEventChannel, fl_event_channel, G_TYPE_OBJECT)
 
 // Handle method calls from the Dart side of the channel.
diff --git a/shell/platform/linux/fl_message_codec.cc b/shell/platform/linux/fl_message_codec.cc
index 5b4454f2acb25..38aa967f2fe30 100644
--- a/shell/platform/linux/fl_message_codec.cc
+++ b/shell/platform/linux/fl_message_codec.cc
@@ -8,9 +8,6 @@
 
 G_DEFINE_QUARK(fl_message_codec_error_quark, fl_message_codec_error)
 
-// Added here to stop the compiler from optimizing this function away.
-G_MODULE_EXPORT GType fl_message_codec_get_type();
-
 G_DEFINE_TYPE(FlMessageCodec, fl_message_codec, G_TYPE_OBJECT)
 
 static void fl_message_codec_class_init(FlMessageCodecClass* klass) {}
diff --git a/shell/platform/linux/fl_method_channel.cc b/shell/platform/linux/fl_method_channel.cc
index d4c45ed920a7c..d967c50e9bdc6 100644
--- a/shell/platform/linux/fl_method_channel.cc
+++ b/shell/platform/linux/fl_method_channel.cc
@@ -31,9 +31,6 @@ struct _FlMethodChannel {
   GDestroyNotify method_call_handler_destroy_notify;
 };
 
-// Added here to stop the compiler from optimizing this function away.
-G_MODULE_EXPORT GType fl_method_channel_get_type();
-
 G_DEFINE_TYPE(FlMethodChannel, fl_method_channel, G_TYPE_OBJECT)
 
 // Called when a binary message is received on this channel.
diff --git a/shell/platform/linux/fl_method_codec.cc b/shell/platform/linux/fl_method_codec.cc
index 38cedb602d0c3..5b6d87c47a39a 100644
--- a/shell/platform/linux/fl_method_codec.cc
+++ b/shell/platform/linux/fl_method_codec.cc
@@ -7,9 +7,6 @@
 
 #include <gmodule.h>
 
-// Added here to stop the compiler from optimizing this function away.
-G_MODULE_EXPORT GType fl_method_codec_get_type();
-
 G_DEFINE_TYPE(FlMethodCodec, fl_method_codec, G_TYPE_OBJECT)
 
 static void fl_method_codec_class_init(FlMethodCodecClass* klass) {}
diff --git a/shell/platform/linux/fl_method_response.cc b/shell/platform/linux/fl_method_response.cc
index 1c0483738f810..d970ffa127fa7 100644
--- a/shell/platform/linux/fl_method_response.cc
+++ b/shell/platform/linux/fl_method_response.cc
@@ -26,12 +26,6 @@ struct _FlMethodNotImplementedResponse {
   FlMethodResponse parent_instance;
 };
 
-// Added here to stop the compiler from optimizing these functions away.
-G_MODULE_EXPORT GType fl_method_response_get_type();
-G_MODULE_EXPORT GType fl_method_success_response_get_type();
-G_MODULE_EXPORT GType fl_method_error_response_get_type();
-G_MODULE_EXPORT GType fl_method_not_implemented_response_get_type();
-
 G_DEFINE_TYPE(FlMethodResponse, fl_method_response, G_TYPE_OBJECT)
 G_DEFINE_TYPE(FlMethodSuccessResponse,
               fl_method_success_response,
diff --git a/shell/platform/linux/fl_pixel_buffer_texture.cc b/shell/platform/linux/fl_pixel_buffer_texture.cc
index b284784eb5b07..374368f039c09 100644
--- a/shell/platform/linux/fl_pixel_buffer_texture.cc
+++ b/shell/platform/linux/fl_pixel_buffer_texture.cc
@@ -16,9 +16,6 @@ typedef struct {
 
 static void fl_pixel_buffer_texture_iface_init(FlTextureInterface* iface);
 
-// Added here to stop the compiler from optimising this function away.
-G_MODULE_EXPORT GType fl_pixel_buffer_texture_get_type();
-
 G_DEFINE_TYPE_WITH_CODE(
     FlPixelBufferTexture,
     fl_pixel_buffer_texture,
diff --git a/shell/platform/linux/fl_plugin_registrar.cc b/shell/platform/linux/fl_plugin_registrar.cc
index c2b83fb6bfb57..403af32aa706a 100644
--- a/shell/platform/linux/fl_plugin_registrar.cc
+++ b/shell/platform/linux/fl_plugin_registrar.cc
@@ -26,9 +26,6 @@ struct _FlPluginRegistrarImpl {
   FlTextureRegistrar* texture_registrar;
 };
 
-// Added here to stop the compiler from optimizing this function away.
-G_MODULE_EXPORT GType fl_plugin_registrar_get_type();
-
 static void fl_plugin_registrar_impl_iface_init(
     FlPluginRegistrarInterface* iface);
 
diff --git a/shell/platform/linux/fl_plugin_registry.cc b/shell/platform/linux/fl_plugin_registry.cc
index 0d0ece40e8a63..18017904e40eb 100644
--- a/shell/platform/linux/fl_plugin_registry.cc
+++ b/shell/platform/linux/fl_plugin_registry.cc
@@ -6,9 +6,6 @@
 
 #include <gmodule.h>
 
-// Added here to stop the compiler from optimizing this function away.
-G_MODULE_EXPORT GType fl_plugin_registry_get_type();
-
 G_DEFINE_INTERFACE(FlPluginRegistry, fl_plugin_registry, G_TYPE_OBJECT)
 
 void fl_plugin_registry_default_init(FlPluginRegistryInterface* self) {}
diff --git a/shell/platform/linux/fl_texture.cc b/shell/platform/linux/fl_texture.cc
index 8ede3bdb517d6..6c0afcf9acd0a 100644
--- a/shell/platform/linux/fl_texture.cc
+++ b/shell/platform/linux/fl_texture.cc
@@ -8,9 +8,6 @@
 #include <gmodule.h>
 #include <cstdio>
 
-// Added here to stop the compiler from optimising this function away.
-G_MODULE_EXPORT GType fl_texture_get_type();
-
 G_DEFINE_INTERFACE(FlTexture, fl_texture, G_TYPE_OBJECT)
 
 static void fl_texture_default_init(FlTextureInterface* self) {}
diff --git a/shell/platform/linux/fl_texture_gl.cc b/shell/platform/linux/fl_texture_gl.cc
index a043c36f879fc..f91922a952f37 100644
--- a/shell/platform/linux/fl_texture_gl.cc
+++ b/shell/platform/linux/fl_texture_gl.cc
@@ -15,9 +15,6 @@ typedef struct {
 
 static void fl_texture_gl_texture_iface_init(FlTextureInterface* iface);
 
-// Added here to stop the compiler from optimising this function away.
-G_MODULE_EXPORT GType fl_texture_gl_get_type();
-
 G_DEFINE_TYPE_WITH_CODE(FlTextureGL,
                         fl_texture_gl,
                         G_TYPE_OBJECT,
diff --git a/shell/platform/linux/public/flutter_linux/fl_basic_message_channel.h b/shell/platform/linux/public/flutter_linux/fl_basic_message_channel.h
index 9e7f4e46bcef9..f3b2bd8ebef0f 100644
--- a/shell/platform/linux/public/flutter_linux/fl_basic_message_channel.h
+++ b/shell/platform/linux/public/flutter_linux/fl_basic_message_channel.h
@@ -11,18 +11,21 @@
 
 #include <gio/gio.h>
 #include <glib-object.h>
+#include <gmodule.h>
 
 #include "fl_binary_messenger.h"
 #include "fl_message_codec.h"
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_FINAL_TYPE(FlBasicMessageChannel,
                      fl_basic_message_channel,
                      FL,
                      BASIC_MESSAGE_CHANNEL,
                      GObject)
 
+G_MODULE_EXPORT
 G_DECLARE_FINAL_TYPE(FlBasicMessageChannelResponseHandle,
                      fl_basic_message_channel_response_handle,
                      FL,
diff --git a/shell/platform/linux/public/flutter_linux/fl_binary_codec.h b/shell/platform/linux/public/flutter_linux/fl_binary_codec.h
index e7223d8dfa272..2f9858cb39551 100644
--- a/shell/platform/linux/public/flutter_linux/fl_binary_codec.h
+++ b/shell/platform/linux/public/flutter_linux/fl_binary_codec.h
@@ -9,10 +9,13 @@
 #error "Only <flutter_linux/flutter_linux.h> can be included directly."
 #endif
 
+#include <gmodule.h>
+
 #include "fl_message_codec.h"
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_FINAL_TYPE(FlBinaryCodec,
                      fl_binary_codec,
                      FL,
diff --git a/shell/platform/linux/public/flutter_linux/fl_binary_messenger.h b/shell/platform/linux/public/flutter_linux/fl_binary_messenger.h
index 0fa7d9980fc44..f98bca70088b1 100644
--- a/shell/platform/linux/public/flutter_linux/fl_binary_messenger.h
+++ b/shell/platform/linux/public/flutter_linux/fl_binary_messenger.h
@@ -11,6 +11,7 @@
 
 #include <gio/gio.h>
 #include <glib-object.h>
+#include <gmodule.h>
 
 G_BEGIN_DECLS
 
@@ -29,12 +30,14 @@ typedef enum {
 
 GQuark fl_binary_messenger_codec_error_quark(void) G_GNUC_CONST;
 
+G_MODULE_EXPORT
 G_DECLARE_INTERFACE(FlBinaryMessenger,
                     fl_binary_messenger,
                     FL,
                     BINARY_MESSENGER,
                     GObject)
 
+G_MODULE_EXPORT
 G_DECLARE_DERIVABLE_TYPE(FlBinaryMessengerResponseHandle,
                          fl_binary_messenger_response_handle,
                          FL,
diff --git a/shell/platform/linux/public/flutter_linux/fl_dart_project.h b/shell/platform/linux/public/flutter_linux/fl_dart_project.h
index 93bd9a4c18d99..9664dfc75928f 100644
--- a/shell/platform/linux/public/flutter_linux/fl_dart_project.h
+++ b/shell/platform/linux/public/flutter_linux/fl_dart_project.h
@@ -6,6 +6,7 @@
 #define FLUTTER_SHELL_PLATFORM_LINUX_FL_DART_PROJECT_H_
 
 #include <glib-object.h>
+#include <gmodule.h>
 
 #if !defined(__FLUTTER_LINUX_INSIDE__) && !defined(FLUTTER_LINUX_COMPILATION)
 #error "Only <flutter_linux/flutter_linux.h> can be included directly."
@@ -13,6 +14,7 @@
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_FINAL_TYPE(FlDartProject, fl_dart_project, FL, DART_PROJECT, GObject)
 
 /**
diff --git a/shell/platform/linux/public/flutter_linux/fl_engine.h b/shell/platform/linux/public/flutter_linux/fl_engine.h
index 6740c0bd8cd81..fddf619fcc505 100644
--- a/shell/platform/linux/public/flutter_linux/fl_engine.h
+++ b/shell/platform/linux/public/flutter_linux/fl_engine.h
@@ -10,6 +10,7 @@
 #endif
 
 #include <glib-object.h>
+#include <gmodule.h>
 
 #include "fl_binary_messenger.h"
 #include "fl_dart_project.h"
@@ -17,6 +18,7 @@
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_FINAL_TYPE(FlEngine, fl_engine, FL, ENGINE, GObject)
 
 /**
diff --git a/shell/platform/linux/public/flutter_linux/fl_event_channel.h b/shell/platform/linux/public/flutter_linux/fl_event_channel.h
index 7141defbed72b..51e22a1d3ade3 100644
--- a/shell/platform/linux/public/flutter_linux/fl_event_channel.h
+++ b/shell/platform/linux/public/flutter_linux/fl_event_channel.h
@@ -11,6 +11,7 @@
 
 #include <gio/gio.h>
 #include <glib-object.h>
+#include <gmodule.h>
 
 #include "fl_binary_messenger.h"
 #include "fl_method_channel.h"
@@ -18,6 +19,7 @@
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_FINAL_TYPE(FlEventChannel,
                      fl_event_channel,
                      FL,
diff --git a/shell/platform/linux/public/flutter_linux/fl_json_message_codec.h b/shell/platform/linux/public/flutter_linux/fl_json_message_codec.h
index ddf68189ac357..a24075950bd85 100644
--- a/shell/platform/linux/public/flutter_linux/fl_json_message_codec.h
+++ b/shell/platform/linux/public/flutter_linux/fl_json_message_codec.h
@@ -9,6 +9,8 @@
 #error "Only <flutter_linux/flutter_linux.h> can be included directly."
 #endif
 
+#include <gmodule.h>
+
 #include "fl_message_codec.h"
 
 G_BEGIN_DECLS
@@ -32,6 +34,7 @@ typedef enum {
 
 GQuark fl_json_message_codec_error_quark(void) G_GNUC_CONST;
 
+G_MODULE_EXPORT
 G_DECLARE_FINAL_TYPE(FlJsonMessageCodec,
                      fl_json_message_codec,
                      FL,
diff --git a/shell/platform/linux/public/flutter_linux/fl_json_method_codec.h b/shell/platform/linux/public/flutter_linux/fl_json_method_codec.h
index 70ddf793b1039..9755f4bfe9e89 100644
--- a/shell/platform/linux/public/flutter_linux/fl_json_method_codec.h
+++ b/shell/platform/linux/public/flutter_linux/fl_json_method_codec.h
@@ -9,10 +9,13 @@
 #error "Only <flutter_linux/flutter_linux.h> can be included directly."
 #endif
 
+#include <gmodule.h>
+
 #include "fl_method_codec.h"
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_FINAL_TYPE(FlJsonMethodCodec,
                      fl_json_method_codec,
                      FL,
diff --git a/shell/platform/linux/public/flutter_linux/fl_message_codec.h b/shell/platform/linux/public/flutter_linux/fl_message_codec.h
index b74aad264b78d..451a6eaba7ad7 100644
--- a/shell/platform/linux/public/flutter_linux/fl_message_codec.h
+++ b/shell/platform/linux/public/flutter_linux/fl_message_codec.h
@@ -10,6 +10,7 @@
 #endif
 
 #include <glib-object.h>
+#include <gmodule.h>
 
 #include "fl_value.h"
 
@@ -37,6 +38,7 @@ typedef enum {
 
 GQuark fl_message_codec_error_quark(void) G_GNUC_CONST;
 
+G_MODULE_EXPORT
 G_DECLARE_DERIVABLE_TYPE(FlMessageCodec,
                          fl_message_codec,
                          FL,
diff --git a/shell/platform/linux/public/flutter_linux/fl_method_call.h b/shell/platform/linux/public/flutter_linux/fl_method_call.h
index 5a5ebc7419af2..bc9a4581e8b7a 100644
--- a/shell/platform/linux/public/flutter_linux/fl_method_call.h
+++ b/shell/platform/linux/public/flutter_linux/fl_method_call.h
@@ -10,12 +10,14 @@
 #endif
 
 #include <glib-object.h>
+#include <gmodule.h>
 
 #include "fl_method_response.h"
 #include "fl_value.h"
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_FINAL_TYPE(FlMethodCall, fl_method_call, FL, METHOD_CALL, GObject)
 
 /**
diff --git a/shell/platform/linux/public/flutter_linux/fl_method_channel.h b/shell/platform/linux/public/flutter_linux/fl_method_channel.h
index f57918d134fff..fe43a94ec9de7 100644
--- a/shell/platform/linux/public/flutter_linux/fl_method_channel.h
+++ b/shell/platform/linux/public/flutter_linux/fl_method_channel.h
@@ -11,6 +11,7 @@
 
 #include <gio/gio.h>
 #include <glib-object.h>
+#include <gmodule.h>
 
 #include "fl_binary_messenger.h"
 #include "fl_method_call.h"
@@ -19,6 +20,7 @@
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_FINAL_TYPE(FlMethodChannel,
                      fl_method_channel,
                      FL,
diff --git a/shell/platform/linux/public/flutter_linux/fl_method_codec.h b/shell/platform/linux/public/flutter_linux/fl_method_codec.h
index 97bf8e929b6e1..86c7d6dfb573f 100644
--- a/shell/platform/linux/public/flutter_linux/fl_method_codec.h
+++ b/shell/platform/linux/public/flutter_linux/fl_method_codec.h
@@ -10,12 +10,14 @@
 #endif
 
 #include <glib-object.h>
+#include <gmodule.h>
 
 #include "fl_method_response.h"
 #include "fl_value.h"
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_DERIVABLE_TYPE(FlMethodCodec,
                          fl_method_codec,
                          FL,
diff --git a/shell/platform/linux/public/flutter_linux/fl_method_response.h b/shell/platform/linux/public/flutter_linux/fl_method_response.h
index 90c4b9cc075db..2306c3e2ea611 100644
--- a/shell/platform/linux/public/flutter_linux/fl_method_response.h
+++ b/shell/platform/linux/public/flutter_linux/fl_method_response.h
@@ -10,6 +10,7 @@
 #endif
 
 #include <glib-object.h>
+#include <gmodule.h>
 
 #include "fl_value.h"
 
@@ -36,6 +37,7 @@ typedef enum {
 
 GQuark fl_method_response_error_quark(void) G_GNUC_CONST;
 
+G_MODULE_EXPORT
 G_DECLARE_DERIVABLE_TYPE(FlMethodResponse,
                          fl_method_response,
                          FL,
@@ -46,18 +48,21 @@ struct _FlMethodResponseClass {
   GObjectClass parent_class;
 };
 
+G_MODULE_EXPORT
 G_DECLARE_FINAL_TYPE(FlMethodSuccessResponse,
                      fl_method_success_response,
                      FL,
                      METHOD_SUCCESS_RESPONSE,
                      FlMethodResponse)
 
+G_MODULE_EXPORT
 G_DECLARE_FINAL_TYPE(FlMethodErrorResponse,
                      fl_method_error_response,
                      FL,
                      METHOD_ERROR_RESPONSE,
                      FlMethodResponse)
 
+G_MODULE_EXPORT
 G_DECLARE_FINAL_TYPE(FlMethodNotImplementedResponse,
                      fl_method_not_implemented_response,
                      FL,
diff --git a/shell/platform/linux/public/flutter_linux/fl_pixel_buffer_texture.h b/shell/platform/linux/public/flutter_linux/fl_pixel_buffer_texture.h
index 7493cba3b427f..31374026a5a28 100644
--- a/shell/platform/linux/public/flutter_linux/fl_pixel_buffer_texture.h
+++ b/shell/platform/linux/public/flutter_linux/fl_pixel_buffer_texture.h
@@ -9,10 +9,13 @@
 #error "Only <flutter_linux/flutter_linux.h> can be included directly."
 #endif
 
+#include <gmodule.h>
+
 #include "fl_texture.h"
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_DERIVABLE_TYPE(FlPixelBufferTexture,
                          fl_pixel_buffer_texture,
                          FL,
diff --git a/shell/platform/linux/public/flutter_linux/fl_plugin_registrar.h b/shell/platform/linux/public/flutter_linux/fl_plugin_registrar.h
index 6382804024e71..2bbcb336ceea4 100644
--- a/shell/platform/linux/public/flutter_linux/fl_plugin_registrar.h
+++ b/shell/platform/linux/public/flutter_linux/fl_plugin_registrar.h
@@ -10,6 +10,7 @@
 #endif
 
 #include <glib-object.h>
+#include <gmodule.h>
 
 #include "fl_binary_messenger.h"
 #include "fl_texture_registrar.h"
@@ -17,6 +18,7 @@
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_INTERFACE(FlPluginRegistrar,
                     fl_plugin_registrar,
                     FL,
diff --git a/shell/platform/linux/public/flutter_linux/fl_plugin_registry.h b/shell/platform/linux/public/flutter_linux/fl_plugin_registry.h
index ac16aba26adac..b20df179722fe 100644
--- a/shell/platform/linux/public/flutter_linux/fl_plugin_registry.h
+++ b/shell/platform/linux/public/flutter_linux/fl_plugin_registry.h
@@ -10,11 +10,13 @@
 #endif
 
 #include <glib-object.h>
+#include <gmodule.h>
 
 #include "fl_plugin_registrar.h"
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_INTERFACE(FlPluginRegistry,
                     fl_plugin_registry,
                     FL,
diff --git a/shell/platform/linux/public/flutter_linux/fl_standard_message_codec.h b/shell/platform/linux/public/flutter_linux/fl_standard_message_codec.h
index 2af7b83b86348..12718b443befa 100644
--- a/shell/platform/linux/public/flutter_linux/fl_standard_message_codec.h
+++ b/shell/platform/linux/public/flutter_linux/fl_standard_message_codec.h
@@ -9,10 +9,13 @@
 #error "Only <flutter_linux/flutter_linux.h> can be included directly."
 #endif
 
+#include <gmodule.h>
+
 #include "fl_message_codec.h"
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_FINAL_TYPE(FlStandardMessageCodec,
                      fl_standard_message_codec,
                      FL,
diff --git a/shell/platform/linux/public/flutter_linux/fl_standard_method_codec.h b/shell/platform/linux/public/flutter_linux/fl_standard_method_codec.h
index 1685ebced9830..46aa02a87b674 100644
--- a/shell/platform/linux/public/flutter_linux/fl_standard_method_codec.h
+++ b/shell/platform/linux/public/flutter_linux/fl_standard_method_codec.h
@@ -9,10 +9,13 @@
 #error "Only <flutter_linux/flutter_linux.h> can be included directly."
 #endif
 
+#include <gmodule.h>
+
 #include "fl_method_codec.h"
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_FINAL_TYPE(FlStandardMethodCodec,
                      fl_standard_method_codec,
                      FL,
diff --git a/shell/platform/linux/public/flutter_linux/fl_string_codec.h b/shell/platform/linux/public/flutter_linux/fl_string_codec.h
index 8f49e9fe0065d..c96786d0c36ca 100644
--- a/shell/platform/linux/public/flutter_linux/fl_string_codec.h
+++ b/shell/platform/linux/public/flutter_linux/fl_string_codec.h
@@ -9,10 +9,13 @@
 #error "Only <flutter_linux/flutter_linux.h> can be included directly."
 #endif
 
+#include <gmodule.h>
+
 #include "fl_message_codec.h"
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_FINAL_TYPE(FlStringCodec,
                      fl_string_codec,
                      FL,
diff --git a/shell/platform/linux/public/flutter_linux/fl_texture.h b/shell/platform/linux/public/flutter_linux/fl_texture.h
index ae0372c19ced8..e91205df770ac 100644
--- a/shell/platform/linux/public/flutter_linux/fl_texture.h
+++ b/shell/platform/linux/public/flutter_linux/fl_texture.h
@@ -10,10 +10,12 @@
 #endif
 
 #include <glib-object.h>
+#include <gmodule.h>
 #include <stdint.h>
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_INTERFACE(FlTexture, fl_texture, FL, TEXTURE, GObject)
 
 /**
diff --git a/shell/platform/linux/public/flutter_linux/fl_texture_gl.h b/shell/platform/linux/public/flutter_linux/fl_texture_gl.h
index c3d4eee744aa2..b7cc94c49d884 100644
--- a/shell/platform/linux/public/flutter_linux/fl_texture_gl.h
+++ b/shell/platform/linux/public/flutter_linux/fl_texture_gl.h
@@ -10,11 +10,13 @@
 #endif
 
 #include <glib-object.h>
+#include <gmodule.h>
 #include <stdint.h>
 #include "fl_texture.h"
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_DERIVABLE_TYPE(FlTextureGL, fl_texture_gl, FL, TEXTURE_GL, GObject)
 
 /**
diff --git a/shell/platform/linux/public/flutter_linux/fl_texture_registrar.h b/shell/platform/linux/public/flutter_linux/fl_texture_registrar.h
index 1c03cdc3ec731..65803cbb897fd 100644
--- a/shell/platform/linux/public/flutter_linux/fl_texture_registrar.h
+++ b/shell/platform/linux/public/flutter_linux/fl_texture_registrar.h
@@ -10,12 +10,14 @@
 #endif
 
 #include <glib-object.h>
+#include <gmodule.h>
 #include <stdint.h>
 
 #include "fl_texture.h"
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_INTERFACE(FlTextureRegistrar,
                     fl_texture_registrar,
                     FL,
diff --git a/shell/platform/linux/public/flutter_linux/fl_view.h b/shell/platform/linux/public/flutter_linux/fl_view.h
index e6b122c8f0a97..dc0db9aa37da8 100644
--- a/shell/platform/linux/public/flutter_linux/fl_view.h
+++ b/shell/platform/linux/public/flutter_linux/fl_view.h
@@ -9,6 +9,7 @@
 #error "Only <flutter_linux/flutter_linux.h> can be included directly."
 #endif
 
+#include <gmodule.h>
 #include <gtk/gtk.h>
 
 #include "fl_dart_project.h"
@@ -16,6 +17,7 @@
 
 G_BEGIN_DECLS
 
+G_MODULE_EXPORT
 G_DECLARE_FINAL_TYPE(FlView, fl_view, FL, VIEW, GtkBox)
 
 /**