Got a quick and simple question, everytime I attempt to build Amarok 2 from source it fails with

CMake Error at /usr/pkg/share/kde/apps/cmake/modules/FindQt4.cmake:1486 (MESSAGE):
  Qt qmake not found!
Call Stack (most recent call first):
  /usr/pkg/share/kde/apps/cmake/modules/FindKDE4Internal.cmake:284 (find_package)
  /usr/pkg/share/cmake-2.6/Modules/FindKDE4.cmake:81 (FIND_PACKAGE)
  CMakeLists.txt:9 (find_package)

I know where qmake is located but how do I point it to the right directory?

Of course you will have to install the basic KDE build system. See more info here:

http://techbase.kde.org/Welcome_to_KDE_TechBase