Ada development resources for Mac OSX Cocoa applications

[Matt Borchers <mattborchers@gmail.com>]

Doing a search here for "mac osx cocoa" returns one hit from 1999.  Needless to say, any "help" in that thread would be woefully out-dated.

I am new to a team that needs to port a 32-bit Carbon graphical desktop application written in Ada to its 64-bit Cocoa equivalent.  Searching the web for any kind of Cocoa function library (in the same spirit as .NET) is leading me to very little of use aside from what I find at developer.apple.com.  Apple developers seem to care mostly about iOS/phone development than desktop apps.  Can anybody direct me to a good set of reference guides, on-line or off-line, that would be helpful to a programmer writing a graphical Mac application using non-native (ie. non-Apple) tools.  Being old-school, I would even appreciate the name of a good book.

I know that 20 years ago interfacing Ada to Objective-C was a very difficult task.  I am hopeful that the past 20 years have brought technologies that have made this easier or even simple.  Has anybody written an Ada binding to AppKit or Foundation with good documentation?

Thanks,
Matt