this is the error :-
Setting up environment for Qt usage...
C:\WINDOWS\system32>cd C:\qwtplot3d-0.2.7\qwtplot3d\examples\simpleplot
C:\qwtplot3d-0.2.7\qwtplot3d\examples\simpleplot>qmake simpleplot.pro
WARNING: Unable to generate output for: C:/qwtplot3d-0.2.7/qwtplot3d/examples/si
mpleplot//Makefile.Debug [TEMPLATE vcapp]
WARNING: Unable to generate output for: C:/qwtplot3d-0.2.7/qwtplot3d/examples/si
mpleplot//Makefile.Release [TEMPLATE vcapp]
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