macos: fix typedef on older macOS

On older systems, we don't have a typedef for gravity. They are a NSString
pointer and we can provide that manually just fine.

diff --git a/gdk/macos/GdkMacosWindow.c b/gdk/macos/GdkMacosWindow.c
index f4fcd01ad54b9737f9c37a08eb93eb376ebcc8c6..3afcdeb8268cb94cb197e2d719205a29d26f2fe7 100644 (file)
--- a/gdk/macos/GdkMacosWindow.c
+++ b/gdk/macos/GdkMacosWindow.c
@@ -38,6 +38,10 @@
 #include "gdkmonitorprivate.h"
 #include "gdksurfaceprivate.h"
 
+#ifndef AVAILABLE_MAC_OS_X_VERSION_10_15_AND_LATER
+typedef NSString *CALayerContentsGravity;
+#endif
+
 @implementation GdkMacosWindow
 
 -(BOOL)windowShouldClose:(id)sender