Update: featureless make should not autp-prepend "-D".

Update: featureless make should not autp-prepend "-D".

Having this does simplify the configuration.
The downside is that it limits the flexibility and requires compiler-specific code to be added and potentially added.

Removing the auto-prepend "-D" will reduce the amount of language or compiler specific code in featureless make.
If another C compiler exists but uses something other than "-D" for defines, then only the settings file need be updated.