
For Windows user :
- Download GraphViz librairie : http://www.graphviz.org/Download.php
- Configure GRAPHVIZ_PATH in GraphViz.pro
- Open with Qt Creator & compile
- copy GraphViz dll to /bin : 
    cdt.dll
    cgraph.dll
    gvc.dll
    gvplugin_core.dll
    gvplugin_dot_layout.dll (Sample use dot layout)
    libexpat.dll
    ltdl.dll
    Pathplan.dll
    vmalloc.dll
    zlib1.dll
    config6 (dont forget !)

- copy Qt dll to /bin :
    QtCore4.dll
    QtGui4.dll
    mingwm10.dll and libgcc_s_dw2-1.dll (if using mingw32 compiler)

    
COMPILATION BUG :
- Graphviz2.36 Windows bundle forget to add "textspan.h"
    * Download missing file at : https://github.com/ellson/graphviz/blob/master/lib/common/textspan.h?source=cc