the built files are not copied to "target.path" when building in Xcode

The target is not respected when building in XCode.
This works in Qt 4.2, but not in Qt 4.3.
It works in Qt 4.3 when building using a regular Makefile and gcc, but not using the Xcode project file with xcodebuild.

Reproducible with the following steps:

• create a simple project, have the following in the pro file:
  TEMPLATE = app
  target.path = /tmp
  INSTALLS += target
  DEPENDPATH += .
  INCLUDEPATH += .

1. Input
   SOURCES += main.cpp

• run: qmake -spec macx-xcode
• run: xcodebuild *.xcodeproj
• run: xcodebuild install

With Qt 4.2, this will copy the built file to "/tmp", but in Qt 4.3 nothing is copied.