Question

I included

PREFIX = /usr/local

inside my project file and then I run

qmake myproject.pro

The makefile doesn’t say anything about PREFIX though so I assume that i’m doing something wrong. Any ideas?

Answer 1

PREFIX doesn’t mean anything in qmake files. The target for files is done via the target parameter. So if you want to make PREFIX determine the base location, such as /usr/local, you can do do something like this:

isEmpty(PREFIX) {
 PREFIX = /usr/local
}
TARGET = myapp
TARGET.path = $$PREFIX/

The isEmpty(PREFIX) will allow it to be changed during the command line call to qmake, e.g.

qmake PREFIX=/opt