bitcoin/bitcoin — pull request #1623 by Diapolo (2012-07-23 06:10:51+00:00)
Title: set TARGET = bitcoin-qt in project file

From the documentation:

TARGET

This specifies the name of the target file.
For example:
TEMPLATE = app
TARGET = myapp
SOURCES = main.cpp

The project file above would produce an executable named myapp on unix and 'myapp.exe' on windows.

I checked the makefile, no changes, but TARGET should not be empty IMHO.