[retro-gtk] Use #pragma once instead of #if guards

From: Adrien Plazas <aplazas src gnome org>
To: commits-list gnome org
Cc:
Subject: [retro-gtk] Use #pragma once instead of #if guards
Date: Sat, 11 Jan 2020 12:55:34 +0000 (UTC)
commit 62be5e720011beb64df9231f93f929caddb16588
Author: Alexander Mikhaylenko <exalm7659 gmail com>
Date:   Sun Sep 1 20:48:43 2019 +0500

    Use #pragma once instead of #if guards

 retro-gtk/retro-cairo-display.h               | 6 +-----
 retro-gtk/retro-controller-codes.h            | 5 +----
 retro-gtk/retro-controller-iterator-private.h | 6 +-----
 retro-gtk/retro-controller-iterator.h         | 6 +-----
 retro-gtk/retro-controller-type.h             | 5 +----
 retro-gtk/retro-controller.h                  | 5 +----
 retro-gtk/retro-core-descriptor.h             | 5 +----
 retro-gtk/retro-core-private.h                | 5 +----
 retro-gtk/retro-core-view-controller.h        | 6 +-----
 retro-gtk/retro-core-view.h                   | 5 +----
 retro-gtk/retro-core.h                        | 5 +----
 retro-gtk/retro-disk-control-callback.h       | 5 +----
 retro-gtk/retro-game-info.h                   | 5 +----
 retro-gtk/retro-gl-display.h                  | 5 +----
 retro-gtk/retro-glsl-filter.h                 | 6 +-----
 retro-gtk/retro-gtk-version.h.in              | 5 +----
 retro-gtk/retro-gtk.h                         | 5 +----
 retro-gtk/retro-input-descriptor.h            | 5 +----
 retro-gtk/retro-input-private.h               | 5 +----
 retro-gtk/retro-input.h                       | 5 +----
 retro-gtk/retro-key-joypad-mapping.h          | 5 +----
 retro-gtk/retro-keyboard-key.h                | 5 +----
 retro-gtk/retro-log.h                         | 5 +----
 retro-gtk/retro-main-loop.h                   | 5 +----
 retro-gtk/retro-memory-type.h                 | 5 +----
 retro-gtk/retro-module-iterator.h             | 6 +-----
 retro-gtk/retro-module-query.h                | 6 +-----
 retro-gtk/retro-module.h                      | 5 +----
 retro-gtk/retro-option-iterator-private.h     | 5 +----
 retro-gtk/retro-option-iterator.h             | 5 +----
 retro-gtk/retro-option-private.h              | 5 +----
 retro-gtk/retro-option.h                      | 5 +----
 retro-gtk/retro-pa-player.h                   | 5 +----
 retro-gtk/retro-pixbuf.h                      | 5 +----
 retro-gtk/retro-pixdata-private.h             | 5 +----
 retro-gtk/retro-pixdata.h                     | 5 +----
 retro-gtk/retro-pixel-format.h                | 5 +----
 retro-gtk/retro-rotation.h                    | 5 +----
 retro-gtk/retro-rumble-effect.h               | 5 +----
 retro-gtk/retro-system-av-info.h              | 5 +----
 retro-gtk/retro-system-info.h                 | 5 +----
 retro-gtk/retro-variable.h                    | 5 +----
 retro-gtk/retro-video-filter.h                | 5 +----
 43 files changed, 43 insertions(+), 179 deletions(-)
---
diff --git a/retro-gtk/retro-cairo-display.h b/retro-gtk/retro-cairo-display.h
index 4ac507a..542ffaa 100644
--- a/retro-gtk/retro-cairo-display.h
+++ b/retro-gtk/retro-cairo-display.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_CAIRO_DISPLAY_H
-#define RETRO_CAIRO_DISPLAY_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -32,6 +31,3 @@ gboolean retro_cairo_display_get_coordinates_on_display (RetroCairoDisplay *self
                                                          gdouble           *display_y);
 
 G_END_DECLS
-
-#endif /* RETRO_CAIRO_DISPLAY_H */
-
diff --git a/retro-gtk/retro-controller-codes.h b/retro-gtk/retro-controller-codes.h
index 54d71f0..043061f 100644
--- a/retro-gtk/retro-controller-codes.h
+++ b/retro-gtk/retro-controller-codes.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_CONTROLLER_CODES_H
-#define RETRO_CONTROLLER_CODES_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -188,5 +187,3 @@ typedef enum
 } RetroPointerId;
 
 G_END_DECLS
-
-#endif /* RETRO_CONTROLLER_CODES_H */
diff --git a/retro-gtk/retro-controller-iterator-private.h b/retro-gtk/retro-controller-iterator-private.h
index d787a02..23a436b 100644
--- a/retro-gtk/retro-controller-iterator-private.h
+++ b/retro-gtk/retro-controller-iterator-private.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_CONTROLLER_ITERATOR_PRIVATE_H
-#define RETRO_CONTROLLER_ITERATOR_PRIVATE_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -14,6 +13,3 @@ G_BEGIN_DECLS
 RetroControllerIterator *retro_controller_iterator_new (GHashTable *controllers);
 
 G_END_DECLS
-
-#endif /* RETRO_CONTROLLER_ITERATOR_PRIVATE_H */
-
diff --git a/retro-gtk/retro-controller-iterator.h b/retro-gtk/retro-controller-iterator.h
index 4452420..4b8933a 100644
--- a/retro-gtk/retro-controller-iterator.h
+++ b/retro-gtk/retro-controller-iterator.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_CONTROLLER_ITERATOR_H
-#define RETRO_CONTROLLER_ITERATOR_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -21,6 +20,3 @@ gboolean retro_controller_iterator_next (RetroControllerIterator  *self,
                                          RetroController         **controller);
 
 G_END_DECLS
-
-#endif /* RETRO_CONTROLLER_ITERATOR_H */
-
diff --git a/retro-gtk/retro-controller-type.h b/retro-gtk/retro-controller-type.h
index b7103b7..ac17046 100644
--- a/retro-gtk/retro-controller-type.h
+++ b/retro-gtk/retro-controller-type.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_CONTROLLER_TYPE_H
-#define RETRO_CONTROLLER_TYPE_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -43,5 +42,3 @@ typedef enum
 } RetroControllerType;
 
 G_END_DECLS
-
-#endif /* RETRO_CONTROLLER_TYPE_H */
diff --git a/retro-gtk/retro-controller.h b/retro-gtk/retro-controller.h
index 1122a72..ee28dd5 100644
--- a/retro-gtk/retro-controller.h
+++ b/retro-gtk/retro-controller.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_CONTROLLER_H
-#define RETRO_CONTROLLER_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -43,5 +42,3 @@ gboolean retro_controller_set_rumble_state (RetroController   *self,
                                             guint16            strength);
 
 G_END_DECLS
-
-#endif /* RETRO_CONTROLLER_H */
diff --git a/retro-gtk/retro-core-descriptor.h b/retro-gtk/retro-core-descriptor.h
index ae1663d..4417277 100644
--- a/retro-gtk/retro-core-descriptor.h
+++ b/retro-gtk/retro-core-descriptor.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_CORE_DESCRIPTOR_H
-#define RETRO_CORE_DESCRIPTOR_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -71,5 +70,3 @@ gboolean retro_core_descriptor_get_platform_supports_mime_types (RetroCoreDescri
                                                                  GError              **error);
 
 G_END_DECLS
-
-#endif /* RETRO_CORE_DESCRIPTOR_H */
diff --git a/retro-gtk/retro-core-private.h b/retro-gtk/retro-core-private.h
index ab1cf11..1e0d977 100644
--- a/retro-gtk/retro-core-private.h
+++ b/retro-gtk/retro-core-private.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_CORE_PRIVATE_H
-#define RETRO_CORE_PRIVATE_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -87,5 +86,3 @@ void retro_core_insert_variable (RetroCore           *self,
 gboolean retro_core_get_variable_update (RetroCore *self);
 
 G_END_DECLS
-
-#endif /* RETRO_CORE_PRIVATE_H */
diff --git a/retro-gtk/retro-core-view-controller.h b/retro-gtk/retro-core-view-controller.h
index dae8587..e4a7a93 100644
--- a/retro-gtk/retro-core-view-controller.h
+++ b/retro-gtk/retro-core-view-controller.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_CORE_VIEW_CONTROLLER_H
-#define RETRO_CORE_VIEW_CONTROLLER_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -20,6 +19,3 @@ RetroCoreViewController *retro_core_view_controller_new (RetroCoreView       *vi
                                                          RetroControllerType  controller_type);
 
 G_END_DECLS
-
-#endif /* RETRO_CORE_VIEW_CONTROLLER_H */
-
diff --git a/retro-gtk/retro-core-view.h b/retro-gtk/retro-core-view.h
index 018313b..c33dd3f 100644
--- a/retro-gtk/retro-core-view.h
+++ b/retro-gtk/retro-core-view.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_CORE_VIEW_H
-#define RETRO_CORE_VIEW_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -47,5 +46,3 @@ void retro_core_view_set_snap_pointer_to_borders (RetroCoreView *self,
                                                   gboolean       snap_pointer_to_borders);
 
 G_END_DECLS
-
-#endif /* RETRO_CORE_VIEW_H */
diff --git a/retro-gtk/retro-core.h b/retro-gtk/retro-core.h
index 03f71ab..146627a 100644
--- a/retro-gtk/retro-core.h
+++ b/retro-gtk/retro-core.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_CORE_H
-#define RETRO_CORE_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -75,5 +74,3 @@ RetroOption *retro_core_get_option (RetroCore   *self,
 RetroOptionIterator *retro_core_iterate_options (RetroCore *self);
 
 G_END_DECLS
-
-#endif /* RETRO_CORE_H */
diff --git a/retro-gtk/retro-disk-control-callback.h b/retro-gtk/retro-disk-control-callback.h
index c5afb97..33489d9 100644
--- a/retro-gtk/retro-disk-control-callback.h
+++ b/retro-gtk/retro-disk-control-callback.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_DISK_CONTROL_CALLBACK_H
-#define RETRO_DISK_CONTROL_CALLBACK_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -33,5 +32,3 @@ struct _RetroDiskControlCallback
 };
 
 G_END_DECLS
-
-#endif /* RETRO_DISK_CONTROL_CALLBACK_H */
diff --git a/retro-gtk/retro-game-info.h b/retro-gtk/retro-game-info.h
index 820b5f0..a8745de 100644
--- a/retro-gtk/retro-game-info.h
+++ b/retro-gtk/retro-game-info.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_GAME_INFO_H
-#define RETRO_GAME_INFO_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -32,5 +31,3 @@ void retro_game_info_free (RetroGameInfo *self);
 G_DEFINE_AUTOPTR_CLEANUP_FUNC (RetroGameInfo, retro_game_info_free)
 
 G_END_DECLS
-
-#endif /* RETRO_GAME_INFO_H */
diff --git a/retro-gtk/retro-gl-display.h b/retro-gtk/retro-gl-display.h
index 2a0b1c7..8b579eb 100644
--- a/retro-gtk/retro-gl-display.h
+++ b/retro-gtk/retro-gl-display.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_GL_DISPLAY_H
-#define RETRO_GL_DISPLAY_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -32,5 +31,3 @@ gboolean retro_gl_display_get_coordinates_on_display (RetroGLDisplay *self,
                                                       gdouble        *display_y);
 
 G_END_DECLS
-
-#endif /* RETRO_GL_DISPLAY_H */
diff --git a/retro-gtk/retro-glsl-filter.h b/retro-gtk/retro-glsl-filter.h
index d468626..2b451ef 100644
--- a/retro-gtk/retro-glsl-filter.h
+++ b/retro-gtk/retro-glsl-filter.h
@@ -1,5 +1,4 @@
-#ifndef RETRO_GLSL_FILTER_H
-#define RETRO_GLSL_FILTER_H
+#pragma once
 
 #include <epoxy/gl.h>
 #include <gio/gio.h>
@@ -35,6 +34,3 @@ void retro_glsl_filter_set_uniform_4f (RetroGLSLFilter *self,
                                        gfloat           v3);
 
 G_END_DECLS
-
-#endif /* RETRO_GLSL_FILTER_H */
-
diff --git a/retro-gtk/retro-gtk-version.h.in b/retro-gtk/retro-gtk-version.h.in
index 4b46d59..31984ca 100644
--- a/retro-gtk/retro-gtk-version.h.in
+++ b/retro-gtk/retro-gtk-version.h.in
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_GTK_VERSION_H
-#define RETRO_GTK_VERSION_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -77,5 +76,3 @@
          (RETRO_GTK_MAJOR_VERSION == (major) && RETRO_GTK_MINOR_VERSION > (minor)) || \
          (RETRO_GTK_MAJOR_VERSION == (major) && RETRO_GTK_MINOR_VERSION == (minor) && \
           RETRO_GTK_MICRO_VERSION >= (micro)))
-
-#endif /* RETRO_GTK_VERSION_H */
diff --git a/retro-gtk/retro-gtk.h b/retro-gtk/retro-gtk.h
index 9cb91cd..ca3beef 100644
--- a/retro-gtk/retro-gtk.h
+++ b/retro-gtk/retro-gtk.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef __RETRO_GTK_H__
-#define __RETRO_GTK_H__
+#pragma once
 
 #define __RETRO_GTK_INSIDE__
 
@@ -30,5 +29,3 @@
 #include "retro-video-filter.h"
 
 #undef __RETRO_GTK_INSIDE__
-
-#endif
diff --git a/retro-gtk/retro-input-descriptor.h b/retro-gtk/retro-input-descriptor.h
index 752db73..8c35086 100644
--- a/retro-gtk/retro-input-descriptor.h
+++ b/retro-gtk/retro-input-descriptor.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_INPUT_DESCRIPTOR_H
-#define RETRO_INPUT_DESCRIPTOR_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -32,5 +31,3 @@ void                      retro_input_descriptor_free  (RetroInputDescriptor *se
 G_DEFINE_AUTOPTR_CLEANUP_FUNC (RetroInputDescriptor, retro_input_descriptor_free)
 
 G_END_DECLS
-
-#endif /* RETRO_INPUT_DESCRIPTOR_H */
diff --git a/retro-gtk/retro-input-private.h b/retro-gtk/retro-input-private.h
index 5b817e8..72525d5 100644
--- a/retro-gtk/retro-input-private.h
+++ b/retro-gtk/retro-input-private.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_INPUT_PRIVATE_H
-#define RETRO_INPUT_PRIVATE_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -76,5 +75,3 @@ gboolean retro_input_get_keyboard (RetroInput       *self,
                                    RetroKeyboardKey *key);
 
 G_END_DECLS
-
-#endif /* RETRO_INPUT_PRIVATE_H */
diff --git a/retro-gtk/retro-input.h b/retro-gtk/retro-input.h
index d8e1de7..f94ebfc 100644
--- a/retro-gtk/retro-input.h
+++ b/retro-gtk/retro-input.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_INPUT_H
-#define RETRO_INPUT_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -38,5 +37,3 @@ gboolean retro_input_get_pointer (RetroInput     *self,
 G_DEFINE_AUTOPTR_CLEANUP_FUNC (RetroInput, retro_input_free)
 
 G_END_DECLS
-
-#endif /* RETRO_INPUT_H */
diff --git a/retro-gtk/retro-key-joypad-mapping.h b/retro-gtk/retro-key-joypad-mapping.h
index 21eb61c..723707b 100644
--- a/retro-gtk/retro-key-joypad-mapping.h
+++ b/retro-gtk/retro-key-joypad-mapping.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_KEY_JOYPAD_MAPPING_H
-#define RETRO_KEY_JOYPAD_MAPPING_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -25,5 +24,3 @@ guint16 retro_key_joypad_mapping_get_button_key (RetroKeyJoypadMapping *self,
                                                  RetroJoypadId          button);
 
 G_END_DECLS
-
-#endif /* RETRO_KEY_JOYPAD_MAPPING_H */
diff --git a/retro-gtk/retro-keyboard-key.h b/retro-gtk/retro-keyboard-key.h
index 115a1a2..09df16a 100644
--- a/retro-gtk/retro-keyboard-key.h
+++ b/retro-gtk/retro-keyboard-key.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_KEYBOARD_KEY_H
-#define RETRO_KEYBOARD_KEY_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -173,5 +172,3 @@ RetroKeyboardKey retro_keyboard_key_converter (guint keyval);
 guint retro_keyboard_key_to_val_converter (RetroKeyboardKey key);
 
 G_END_DECLS
-
-#endif /* RETRO_KEYBOARD_KEY_H */
diff --git a/retro-gtk/retro-log.h b/retro-gtk/retro-log.h
index 3d08303..96c924d 100644
--- a/retro-gtk/retro-log.h
+++ b/retro-gtk/retro-log.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_LOG_H
-#define RETRO_LOG_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -18,5 +17,3 @@ void retro_g_log (RetroCore      *sender,
                   const gchar    *message);
 
 G_END_DECLS
-
-#endif /* RETRO_LOG_H */
diff --git a/retro-gtk/retro-main-loop.h b/retro-gtk/retro-main-loop.h
index bf2052f..515bedd 100644
--- a/retro-gtk/retro-main-loop.h
+++ b/retro-gtk/retro-main-loop.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_MAIN_LOOP_H
-#define RETRO_MAIN_LOOP_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -27,5 +26,3 @@ void retro_main_loop_set_speed_rate (RetroMainLoop *self,
                                      gdouble        speed_rate);
 
 G_END_DECLS
-
-#endif /* RETRO_MAIN_LOOP_H */
diff --git a/retro-gtk/retro-memory-type.h b/retro-gtk/retro-memory-type.h
index 4cede5e..bfe677f 100644
--- a/retro-gtk/retro-memory-type.h
+++ b/retro-gtk/retro-memory-type.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_MEMORY_TYPE_H
-#define RETRO_MEMORY_TYPE_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -29,5 +28,3 @@ typedef enum
 } RetroMemoryType;
 
 G_END_DECLS
-
-#endif /* RETRO_MEMORY_TYPE_H */
diff --git a/retro-gtk/retro-module-iterator.h b/retro-gtk/retro-module-iterator.h
index ad85356..f830217 100644
--- a/retro-gtk/retro-module-iterator.h
+++ b/retro-gtk/retro-module-iterator.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_MODULE_ITERATOR_H
-#define RETRO_MODULE_ITERATOR_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -22,6 +21,3 @@ RetroCoreDescriptor *retro_module_iterator_get (RetroModuleIterator *self);
 gboolean retro_module_iterator_next (RetroModuleIterator *self);
 
 G_END_DECLS
-
-#endif /* RETRO_MODULE_ITERATOR_H */
-
diff --git a/retro-gtk/retro-module-query.h b/retro-gtk/retro-module-query.h
index e3db695..cee08ca 100644
--- a/retro-gtk/retro-module-query.h
+++ b/retro-gtk/retro-module-query.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_MODULE_QUERY_H
-#define RETRO_MODULE_QUERY_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -20,6 +19,3 @@ RetroModuleQuery *retro_module_query_new (gboolean recursive);
 RetroModuleIterator *retro_module_query_iterator (RetroModuleQuery *self);
 
 G_END_DECLS
-
-#endif /* RETRO_MODULE_QUERY_H */
-
diff --git a/retro-gtk/retro-module.h b/retro-gtk/retro-module.h
index 5056fad..d3dc43f 100644
--- a/retro-gtk/retro-module.h
+++ b/retro-gtk/retro-module.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_MODULE_H
-#define RETRO_MODULE_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -62,5 +61,3 @@ RetroGetMemoryData retro_module_get_get_memory_data (RetroModule *self);
 RetroGetMemorySize retro_module_get_get_memory_size (RetroModule *self);
 
 G_END_DECLS
-
-#endif /* RETRO_MODULE_H */
diff --git a/retro-gtk/retro-option-iterator-private.h b/retro-gtk/retro-option-iterator-private.h
index de06ec2..b71b33a 100644
--- a/retro-gtk/retro-option-iterator-private.h
+++ b/retro-gtk/retro-option-iterator-private.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_OPTION_ITERATOR_PRIVATE_H
-#define RETRO_OPTION_ITERATOR_PRIVATE_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -14,5 +13,3 @@ G_BEGIN_DECLS
 RetroOptionIterator *retro_option_iterator_new (GHashTable *options);
 
 G_END_DECLS
-
-#endif /* RETRO_OPTION_ITERATOR_PRIVATE_H */
diff --git a/retro-gtk/retro-option-iterator.h b/retro-gtk/retro-option-iterator.h
index dc67576..0bace93 100644
--- a/retro-gtk/retro-option-iterator.h
+++ b/retro-gtk/retro-option-iterator.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_OPTION_ITERATOR_H
-#define RETRO_OPTION_ITERATOR_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -21,5 +20,3 @@ gboolean retro_option_iterator_next (RetroOptionIterator  *self,
                                      RetroOption         **option);
 
 G_END_DECLS
-
-#endif /* RETRO_OPTION_ITERATOR_H */
diff --git a/retro-gtk/retro-option-private.h b/retro-gtk/retro-option-private.h
index 33f631e..d16ef76 100644
--- a/retro-gtk/retro-option-private.h
+++ b/retro-gtk/retro-option-private.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_OPTION_PRIVATE_H
-#define RETRO_OPTION_PRIVATE_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -16,5 +15,3 @@ RetroOption *retro_option_new (const RetroVariable  *variable,
                                GError              **error);
 
 G_END_DECLS
-
-#endif /* RETRO_OPTION_PRIVATE_H */
diff --git a/retro-gtk/retro-option.h b/retro-gtk/retro-option.h
index 54500b5..32ab0da 100644
--- a/retro-gtk/retro-option.h
+++ b/retro-gtk/retro-option.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_OPTION_H
-#define RETRO_OPTION_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -24,5 +23,3 @@ void retro_option_set_value (RetroOption  *self,
                              GError      **error);
 
 G_END_DECLS
-
-#endif /* RETRO_OPTION_H */
diff --git a/retro-gtk/retro-pa-player.h b/retro-gtk/retro-pa-player.h
index c126731..145a2cb 100644
--- a/retro-gtk/retro-pa-player.h
+++ b/retro-gtk/retro-pa-player.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_PA_PLAYER_H
-#define RETRO_PA_PLAYER_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -23,5 +22,3 @@ void retro_pa_player_set_core (RetroPaPlayer *self,
                                RetroCore     *core);
 
 G_END_DECLS
-
-#endif /* RETRO_PA_PLAYER_H */
diff --git a/retro-gtk/retro-pixbuf.h b/retro-gtk/retro-pixbuf.h
index fa3d53e..f8b5902 100644
--- a/retro-gtk/retro-pixbuf.h
+++ b/retro-gtk/retro-pixbuf.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_PIXBUF_H
-#define RETRO_PIXBUF_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -17,5 +16,3 @@ void   retro_pixbuf_set_aspect_ratio (GdkPixbuf *pixbuf,
                                       gfloat     aspect_ratio);
 
 G_END_DECLS
-
-#endif /* RETRO_PIXBUF_H */
diff --git a/retro-gtk/retro-pixdata-private.h b/retro-gtk/retro-pixdata-private.h
index 01fe4b7..eb05b05 100644
--- a/retro-gtk/retro-pixdata-private.h
+++ b/retro-gtk/retro-pixdata-private.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_PIXDATA_PRIVATE_H
-#define RETRO_PIXDATA_PRIVATE_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -32,5 +31,3 @@ void retro_pixdata_init (RetroPixdata     *self,
                          gfloat            aspect_ratio);
 
 G_END_DECLS
-
-#endif /* RETRO_PIXDATA_PRIVATE_H */
diff --git a/retro-gtk/retro-pixdata.h b/retro-gtk/retro-pixdata.h
index 3b0b9a8..d9e4c3b 100644
--- a/retro-gtk/retro-pixdata.h
+++ b/retro-gtk/retro-pixdata.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_PIXDATA_H
-#define RETRO_PIXDATA_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -29,5 +28,3 @@ gboolean retro_pixdata_load_gl_texture (RetroPixdata *self);
 G_DEFINE_AUTOPTR_CLEANUP_FUNC (RetroPixdata, retro_pixdata_free)
 
 G_END_DECLS
-
-#endif /* RETRO_PIXDATA_H */
diff --git a/retro-gtk/retro-pixel-format.h b/retro-gtk/retro-pixel-format.h
index e66c52a..465271e 100644
--- a/retro-gtk/retro-pixel-format.h
+++ b/retro-gtk/retro-pixel-format.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_PIXEL_FORMAT_H
-#define RETRO_PIXEL_FORMAT_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -33,5 +32,3 @@ typedef enum
 } RetroPixelFormat;
 
 G_END_DECLS
-
-#endif /* RETRO_PIXEL_FORMAT_H */
diff --git a/retro-gtk/retro-rotation.h b/retro-gtk/retro-rotation.h
index f1aff32..de42bd1 100644
--- a/retro-gtk/retro-rotation.h
+++ b/retro-gtk/retro-rotation.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_ROTATION_H
-#define RETRO_ROTATION_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -22,5 +21,3 @@ enum _RetroRotation
 };
 
 G_END_DECLS
-
-#endif /* RETRO_ROTATION_H */
diff --git a/retro-gtk/retro-rumble-effect.h b/retro-gtk/retro-rumble-effect.h
index 0e35317..3037769 100644
--- a/retro-gtk/retro-rumble-effect.h
+++ b/retro-gtk/retro-rumble-effect.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_RUMBLE_EFFECT_H
-#define RETRO_RUMBLE_EFFECT_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -27,5 +26,3 @@ typedef enum
 } RetroRumbleEffect;
 
 G_END_DECLS
-
-#endif /* RETRO_RUMBLE_EFFECT_H */
diff --git a/retro-gtk/retro-system-av-info.h b/retro-gtk/retro-system-av-info.h
index 1ef4bf8..e13165e 100644
--- a/retro-gtk/retro-system-av-info.h
+++ b/retro-gtk/retro-system-av-info.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_SYSTEM_AV_INFO_H
-#define RETRO_SYSTEM_AV_INFO_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -37,5 +36,3 @@ struct _RetroSystemAvInfo
 };
 
 G_END_DECLS
-
-#endif /* RETRO_SYSTEM_AV_INFO_H */
diff --git a/retro-gtk/retro-system-info.h b/retro-gtk/retro-system-info.h
index cdef34b..1e2cb9a 100644
--- a/retro-gtk/retro-system-info.h
+++ b/retro-gtk/retro-system-info.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_SYSTEM_INFO_H
-#define RETRO_SYSTEM_INFO_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -23,5 +22,3 @@ struct _RetroSystemInfo
 };
 
 G_END_DECLS
-
-#endif /* RETRO_SYSTEM_INFO_H */
diff --git a/retro-gtk/retro-variable.h b/retro-gtk/retro-variable.h
index 6b66735..71a2744 100644
--- a/retro-gtk/retro-variable.h
+++ b/retro-gtk/retro-variable.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_VARIABLE_H
-#define RETRO_VARIABLE_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -20,5 +19,3 @@ struct _RetroVariable
 };
 
 G_END_DECLS
-
-#endif /* RETRO_VARIABLE_H */
diff --git a/retro-gtk/retro-video-filter.h b/retro-gtk/retro-video-filter.h
index 9cdb647..beaff7f 100644
--- a/retro-gtk/retro-video-filter.h
+++ b/retro-gtk/retro-video-filter.h
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#ifndef RETRO_VIDEO_FILTER_H
-#define RETRO_VIDEO_FILTER_H
+#pragma once
 
 #if !defined(__RETRO_GTK_INSIDE__) && !defined(RETRO_GTK_COMPILATION)
 # error "Only <retro-gtk.h> can be included directly."
@@ -35,5 +34,3 @@ typedef enum
 RetroVideoFilter retro_video_filter_from_string (const gchar *filter);
 
 G_END_DECLS
-
-#endif /* RETRO_VIDEO_FILTER_H */
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