I never used QT in TCL - ( FLTK is enough for me ) , but in my early Knoppix days - following links helped me , see if it is of any help to you :
1) Ggl for Sitara SDK and QT
2) newbee link :https://pdfs.semanticscholar.org/presentation/f29c/a69120a610ffde1666ffcc5615216cc95194.pdf