qmake: using defines as conditionals

Question

How can I define variables to be used in the qmake .pro file? For instance:

DEFINES += MYCONDITION # also used in C++ code
MYCONDITION {
   # do something here
}

Regards,

Answer 1

You should use CONFIG += MYCONDITION if you want to create a conditional in the project file and DEFINES to create a conditional for header and cpp files(USING #ifdef etc)

Answer 2

you can use CONFIG

CONFIG += qt console newstuff
newstuff {
    SOURCES += new.cpp
    HEADERS += new.h
}