> mkdir build
> cd build
> scons -f ../development/scons/SConstruct frontend=qt4 all
+If you are tired of typing development/scons/SConstruct, you can link
+development/scons/SConstruct to the top source directory and use this
+SConstruct file.
There are three types of command line options:
* key=value are user options. They are used to tell scons which