Add platform dependent path into pro file problem

[Ashkan_s]

try this form

win32 {
    INCLUDEPATH += C:\Qwt-6.0.2\include
    LIBS += -LC:\Qwt-6.0.2\lib -lqwt
 
    CONFIG += qwt
}

win32 {
    INCLUDEPATH += C:\Qwt-6.0.2\include
    LIBS += -LC:\Qwt-6.0.2\lib -lqwt

    CONFIG += qwt
}

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