How to fix this issue?

[Gokulnathvc]

1) undefined reference to `GUID_DEVINTERFACE_DISK'
2) undefined reference to `_imp__SetupDiGetClassDevsW@16'

[FelixB]

if you have undefined references, then you have to define these references. include the necessary files, set your compilers search paths etc.

[Gokulnathvc]

How to define these references in my cpp file.?

[ChrisW67]

This is a Qt-focussed forum, not a general Windows API programming forum.

Ntddstor.h declares GUID_DEVINTERFACE_DISK.
SetupDiGetClassDevs is in setupapi.dll

[Gokulnathvc]

I have linked the setupapi library in qmakespec. -lsetupapi and included initguid.h in my cpp file. Now the undefined reference issue has been solved.