Fix bundled HarfBuzz-NG build on Mac

Change-Id: I2229c77b4951c2ba9b445286cb94a2a86e345c34
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>

src/3rdparty/harfbuzz-ng/harfbuzz-ng.pro

@@ -121,6 +121,14 @@ mac {
 
     HEADERS += \
         $$PWD/src/hb-coretext.h
+
+    ios: \
+        # On iOS CoreText and CoreGraphics are stand-alone frameworks
+        LIBS_PRIVATE += -framework CoreText -framework CoreGraphics
+    else: \
+        # On Mac OS they are part of the ApplicationServices umbrella framework,
+        # even in 10.8 where they were also made available stand-alone.
+        LIBS_PRIVATE += -framework ApplicationServices
 }
 
 TARGET = $$TARGET$$qtPlatformTargetSuffix()

src/3rdparty/harfbuzz-ng/src/hb-coretext.h

@@ -29,7 +29,13 @@
 
 #include "hb.h"
 
-#include <ApplicationServices/ApplicationServices.h>
+#include <TargetConditionals.h>
+#if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
+#  include <CoreText/CoreText.h>
+#  include <CoreGraphics/CoreGraphics.h>
+#else
+#  include <ApplicationServices/ApplicationServices.h>
+#endif
 
 HB_BEGIN_DECLS