Compiling all classes on every build

[pan]

I have a project that is compiling all classes on both build and rebuild.

I have a pro file set up to use SUBDIRS. One dir is the gui and the other is all my plugin classes.

I thought "build" should just rebuild and classes which have changed since the last time the object was created, where as "rebuild" would rebuild them all.

Is there a way I can stop it rebuilding all my plugin classes, unless I have cleaned them first?

Thanks.