How to to target_compile_definitions() in qmake?

Question

In CMake I use:

#target_compile_definitions(appsap_rtf PRIVATE SAPwithUNICODE UNICODE _UNICODE SAPwithTHREADS)
target_compile_definitions(appsap_rtf PRIVATE SAPwithUNICODE)
target_compile_definitions(appsap_rtf PRIVATE UNICODE)
target_compile_definitions(appsap_rtf PRIVATE _UNICODE)
target_compile_definitions(appsap_rtf PRIVATE SAPwithTHREADS)

but how do I define these definitions in qmake?