qmake using source files not in .pro file

[Asperamanca]

Is there a kind of cache that I need to empty? Because those are source files from the previous project I tried to make.

[nish]

have you posted the full pro file or part of it?

[Asperamanca]

That's the full file. It was auto-generated by qmake -project
Something missing?

[nish]

are you running qmake in the same directory as the pro file?

[Asperamanca]

Yes. My command line is in the directory with the aforementioned .pro file, and I type "qmake MyHelloWorld.pro"

BTW, the only QT-related entry in my PATH env-var is the [...]\qt\bin\ folder

[nish]

may be try to remove +=
SOURCES += helloWorld.cpp
to
SOURCES = helloWorld.cpp
HEADERS = dummy.h

[nish]

may be try to remove +=
SOURCES += helloWorld.cpp
to
SOURCES = helloWorld.cpp
HEADERS = dummy.h

edit:
also try to rename the folder, pro file to helloWorld

[Asperamanca]

Aaaahhh...now we're getting somewhere!

Does qmake retains the variables last used? Even when re-booting the machine (which I did several times)?

[nish]

so did your problem solved? its strange..

[Asperamanca]

Yep. That problem's solved. Now for the make...but I'll tinker around a bit before calling for help