help explaining qmake generated make file

[high_flyer]

Hi,

Since I am on a central administrated PC, and I want to work with Qt4 and KDevelop > 3.0 I had to install both Qt4 and KDevelop on not default locations.
But when I try to compile a Qt4 test project I get an error that says that <Qt path>/src/moc does not exist.
So wondering where this path is in the make file I found out that qmake generates this:

$(MOC):
( cd $(QTDIR)/src/moc && $(MAKE) )

I thought this has to do with my custom install so I went to check the makefile on my working qt3 installation with a project that compiles.
And there too, qmake generates the same above code in the makefile.
But neither may Qt3 nor Qt4 installation has $(QTDIR)/src/moc, so what I don't understand is, why does this work for the Qt3 make file?

Thanks.

EDIT:
never mind I figured it out.
For a reason i still need to figure out qmake generates a makfile with a MOC variable set to /bin/moc and not $(QTDIR)/bin/moc, so it trys to make moc out of source, whic the path to does not exist since this is the installation location not the src location of Qt4.

[kandalf]

Which is the path to the qmake executable that is generating the mentioned Makefile?
How are you running KDevelop? I mean, what is the environment from which you start KDevelop?

[high_flyer]

I figured it all out - KDevelop uses PATH to call qmake, so all though QTDIR is given to it correctly it will run the qmake that it finds first in PATH.