I've downloaded a package and am trying to build/install it. The project's wiki page has a command that looks like

```
qmake VAR=/path/to/something/ project.pro
```

It says that this command should tell `qmake` to generate a make file. Instead, I'm getting

```
qmake: Nothing to be done for `project.pro'.
```

Why is `qmake` not generating the make file like it's supposed to?