Beginner level program not working

[Nishant]

Hello all,
my program which i have attatched gives compile output as:
Makefile.Debug:147: warning: ignoring old commands for target `debug/art.o'
Makefile.Debug:165: warning: overriding commands for target `debug/of.o'
Makefile.Debug:150: warning: ignoring old commands for target `debug/of.o'
Makefile.Debug:168: warning: overriding commands for target `debug/building.o'
Makefile.Debug:153: warning: ignoring old commands for target `debug/building.o'
Makefile.Debug:171: warning: overriding commands for target `debug/Qt.o'
Makefile.Debug:156: warning: ignoring old commands for target `debug/Qt.o'
Makefile.Debug:174: warning: overriding commands for target `debug/ByteConverterDialog.o'
Makefile.Debug:159: warning: ignoring old commands for target `debug/ByteConverterDialog.o'
mingw32-make[1]: *** No rule to make target `e:/data/Ebukz/Qt/art', needed by `debug/art.o'. Stop.
mingw32-make: *** [debug] Error 2
Exited with code 2.
Error while building project Byteconverter
When executing build step 'Make'


can someone please look into it and help me with it?
Thanks