Like already said in post the precedence, the task to compile amarok 2 with the script put on hand from kde (kdesvn-build extragear/multimedia/amarok)has been revealed more arduous of the previewed one, tant'è that I have decided to resort to the old systems. And, as usual, the old systems have revealed the best ones:

• to modify the rows $HOME/.bashrc inserting these lines of code:
  export YACC='byacc - of
  export QTDIR=/path/to/qt-copy
  export KDEDIR=/path/to/kde4
  export KDEDIRS=$KDEDIR
  export DBUSDIR=/usr
  export PKG_CONFIG_PATH=$DBUSDIR/lib/pkgconfig: $PKG_CONFIG_PATH
  export PATH=$QTDIR/bin: $KDEDIR/bin: $PATH
  export LD_LIBRARY_PATH=$QTDIR/lib: $KDEDIR/lib: $LD_LIBRARY_PATH
  eval `PATH=$DBUSDIR/bin $DBUSDIR/bin/dbus-launch - car-syntax `
• to install dependencies, to thus unload and to compile amarok 2:
  1. I sudo apt-get install libtag1-dev ruby1.8-dev libxine-dev;
  2. svn Co svn: /anonsvn.kde.org/home/kde/trunk/extragear/multimedia/amarok;
  3. cd amarok;
  4. mkdir amarok-build;
  5. cd amarok-build;
  6. cmake - DCMAKE_INSTALL_PREFIX=$KDEDIR - DCMAKE_BUILD_TYPE=debugfull ../../amarok && make VERBOSE=1 && make install.

And here amarok2;
(more…)

It marks it near: