background parser ignores code inside of an "#ifdef"-block in kdev 3.9.98

[Dietmar Hofer]

I am not using kdevelop for compiling and running the project, because it's 
for an embedded device with a custom build-system managed from command line.

What I tried so far:
- launch kdevelop from command line after defining and exporting CXXFLAGS with 
the needed macro there
- go to "settings->configure kdevelop->environment" and add the flag as variable 
there.

I remember that in kdevelop 3 it was possible after defining the flags somewhere 
in settings.
Any suggestions?