Gtkada on Mac using Quartz

[ahlan@marriott.org]

Has anyone managed to install GtkAda on a Mac, preferably GPL 2015.

Unfortunately AdaCore doesn't provide a GtkAda installation for MacOs as part of its GPL offering however as there is a MacPort of Gtk I rather hoped that all I had to do was compile the GtkAda bindings to Gtk.

So I installed MacPorts and Xcode and then did the port install of gtk3 +quartz.
This seemed to work. :-)
Apparently I now have Gtk 3.16.0 installed on my Mac.

On the perhaps faulty and naive assumption that compiling the GtkAda bindings would be the same as for linux I tried to use gtkada-gpl-2015-src.tar

After decompressing these sources I ran
CC=/usr/bin/gcc ./configure --prefix=/Users/Ahlan/Documents

This did lots of checking, liked what it found and created various makefiles and .gpr files.
So far so good ;-)
 
I then started the build by issuing the command Make
This started - but quickly failed ;-(

gcc -c -gnat05 -gnatQ -O2 -gnatn -gnatws gtkada-mdi.adb
gcc -c -gnat05 -gnatQ -O2 -gnatn -gnatws gtkada-intl.adb
gcc -c -gnat05 -gnatQ -O2 -gnatn -gnatws gtkada-handlers.ads
gcc -c -gnat05 -gnatQ -O2 -gnatn -gnatws gtkada-file_selection.adb
/Users/Ahlan/Documents/gtkada-gpl-2015-src/src/misc_osx.m:37:10: fatal error: 
      'gdk/gdkquartz.h' file not found
#include <gdk/gdkquartz.h>
         ^
gcc -c -gnat05 -gnatQ -O2 -gnatn -gnatws gtkada-dialogs.adb
1 error generated.

   compilation of misc_osx.m failed

gprbuild: *** compilation phase failed

Has anyone any idea why the file gdkquartz.h is missing?
Do I have to do something in addition to get the files for gdk Quartz?
Should I get this file and then see what happens next?
Or am I wasting my time?

Has anyone ventured down this path - perhaps even getting GtkAda to work?

Best wishes,
Ahlan