[retro-gtk] demo: Only include toplevel header file

[Adrien Plazas <aplazas src gnome org>]

commit 602d9123b5937af3c1e4cb619b587aa325ed4e9f
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Mon Jan 6 20:27:39 2020 +0500

    demo: Only include toplevel header file
    
    Avoid issues later after directory layout changes.

 demos/meson.build     | 1 -
 demos/retro-demo.c    | 3 +--
 retro-gtk/meson.build | 4 +++-
 3 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/demos/meson.build b/demos/meson.build
index 075373d..64676b8 100644
--- a/demos/meson.build
+++ b/demos/meson.build
@@ -7,7 +7,6 @@ executable(
   'retro-demo.c',
   c_args: retro_demo_c_args,
   dependencies: retro_gtk_dep,
-  include_directories: [ confinc, srcinc ],
   gui_app: true,
   install: true,
 )
diff --git a/demos/retro-demo.c b/demos/retro-demo.c
index 28170cf..16372cd 100644
--- a/demos/retro-demo.c
+++ b/demos/retro-demo.c
@@ -1,7 +1,6 @@
 // This file is part of retro-gtk. License: GPL-3.0+.
 
-#include <retro-gtk/retro-gtk.h>
-#include <retro-gtk/retro-core-view.h>
+#include <retro-gtk.h>
 
 #define RETRO_TYPE_DEMO_APPLICATION (retro_demo_application_get_type())
 
diff --git a/retro-gtk/meson.build b/retro-gtk/meson.build
index 96d979f..1c7655d 100644
--- a/retro-gtk/meson.build
+++ b/retro-gtk/meson.build
@@ -162,10 +162,12 @@ if get_option('introspection')
   retro_gtk_dep_sources += retro_gtk_gir
 endif
 
+retro_gtk_inc = include_directories('.')
+
 retro_gtk_dep = declare_dependency(
   link_with: retro_gtk_lib,
   sources: retro_gtk_dep_sources,
-  include_directories: confinc,
+  include_directories: [ confinc, retro_gtk_inc ],
   dependencies: retro_gtk_deps,
 )