gdk: Include copy of glib/gconstructor.h

This is named gdkconstructor.h to avoid any possible conflicts. This fixes
the current usages of G_HAS_CONSTRUCTORS, as that header is not installed
by glib.

1 files changed, 2 insertions, 0 deletions

diff --git a/gdk/gdk.c b/gdk/gdk.c
index 6c69f1a050..e094b3465a 100644
--- a/gdk/gdk.c
+++ b/gdk/gdk.c
@@ -33,6 +33,8 @@
 
 #include "gdk-private.h"
 
+#include "gdkconstructor.h"
+
 #ifndef HAVE_XCONVERTCASE
 #include "gdkkeysyms.h"
 #endif