[gtk: 1/3] macos: Fix gdk_quartz_drag_context_get_dragging_info_libgtk_only symbol export

[Christoph Reiter <creiter src gnome org>]

commit 94d6d56913a1e0564c54d10a3a31fbb4303be2d9
Author: Christoph Reiter <creiter src gnome org>
Date:   Tue Feb 27 19:53:43 2018 +0100

    macos: Fix gdk_quartz_drag_context_get_dragging_info_libgtk_only symbol export
    
    The header got included without config.h being included first which resulted in the
    wrong _GDK_EXTERN macro being used. As a result some symbols weren't exported
    and starting a DnD action would crash in the linker.
    
    This patch adds config.h includes in all places where clang complained about
    _GDK_EXTERN redefinitions.
    
    See #32 for more info.

 gdk/quartz/GdkQuartzNSWindow.c | 1 +
 gdk/quartz/GdkQuartzView.c     | 1 +
 gdk/quartz/gdkdnd-quartz.c     | 1 +
 3 files changed, 3 insertions(+)
---
diff --git a/gdk/quartz/GdkQuartzNSWindow.c b/gdk/quartz/GdkQuartzNSWindow.c
index f6c50bc4f0..c5296b12ea 100644
--- a/gdk/quartz/GdkQuartzNSWindow.c
+++ b/gdk/quartz/GdkQuartzNSWindow.c
@@ -16,6 +16,7 @@
  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
 #import "GdkQuartzNSWindow.h"
 #include "gdkquartzwindow.h"
 #include "gdkdnd-quartz.h"
diff --git a/gdk/quartz/GdkQuartzView.c b/gdk/quartz/GdkQuartzView.c
index e945b2fb5e..6a20cd06d7 100644
--- a/gdk/quartz/GdkQuartzView.c
+++ b/gdk/quartz/GdkQuartzView.c
@@ -17,6 +17,7 @@
  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
 #import "GdkQuartzView.h"
 #include "gdkquartzwindow.h"
 #include "gdkprivate-quartz.h"
diff --git a/gdk/quartz/gdkdnd-quartz.c b/gdk/quartz/gdkdnd-quartz.c
index 8d16219a57..5c2c59590e 100644
--- a/gdk/quartz/gdkdnd-quartz.c
+++ b/gdk/quartz/gdkdnd-quartz.c
@@ -16,6 +16,7 @@
  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "config.h"
 #include "gdkdnd.h"
 #include "gdkquartzdnd.h"
 #include "gdkprivate-quartz.h"