getSubDir vs. getProjectDir

[Bernd Gehrmann]

> > Because I do not understand why you want to make clean in a directory
> > where only project files are. I thought 'make distclean' is for that
> > kind of cleaing up.

distclean is for removing files which are not distributed, e.g.
makefiles, onfig.h and generated dependencies.

> I don´t know except that I think that 99% of KDevelop apps are
> containing a Makefile in the *base* directory that contains make clean
> ;-) because they use autoconf &co. 

Actually, this is a convention which was established centuries
before autoconf was invented ;-)

Bernd.