The front page for Keil MDK (https://www2.keil.com/mdk5/middleware) mentions that "Keil MDK Source is available as a separate product".
I was not able to find any mentions of that product anywhere on the keil website.
We have an MDK Pro license.
How do we get access to the source code?
The Keil website at:
http://www2.keil.com/mdk5/middleware
confirms:
Thus, please contact your local distributor for a quote:
http://www.keil.com/distis/