Linking DLL to Project

[lynchkp]

Hey everyone,

I'm trying to link the FFTW libraries to my project in Windows. It works great when I do my development on my Macbook but I'm having difficulty getting the DLLs to link in on windows (I haven't really done it before)

I have placed the libfftw3-3.dll and fftw3.h file in my C:/Windows/System32/ directory. The error now I get is "undefined reference to '_imp_fftw_malloc', etc., indicating that the linking was incorrect.

Sorry, I know I'm a newbie at this. Any suggestions?

Here is my .pro file:

HEADERS += \
    mainwindow.h \
    corrsettingsdialog.h \
    fileopendialog.h \
    vardefs.h \
    qpiv.h \
    vectorscalingdialog.h \
    batchsettings.h
 
SOURCES += \
    mainwindow.cpp \
    main.cpp \
    corrsettingsdialog.cpp \
    corr_dcc.cpp \
    fileopendialog.cpp \
    subpixel_est.cpp \
    outlier_det.cpp \
    interp_vec.cpp \
    temp.cpp \
    run_corr.cpp \
    grid_gen.cpp \
    file_func.cpp \
    vectorscalingdialog.cpp \
    corr_dncc.cpp \
    batchsettings.cpp \
    corr_fft.cpp
 
FORMS += \
    corrsettingsdialog.ui \
    fileopendialog.ui \
    vectorscalingdialog.ui \
    batchsettings.ui
 
win32 {
    LIBS += -LC:/Windows/System32/libfftw3-3
    INCLUDEPATH += C:/Windows/System32/
}
 
macx {
    LIBS += -lfftw3 -lm
    INCLUDEPATH += /usr/local/include
}

HEADERS += \
    mainwindow.h \
    corrsettingsdialog.h \
    fileopendialog.h \
    vardefs.h \
    qpiv.h \
    vectorscalingdialog.h \
    batchsettings.h

SOURCES += \
    mainwindow.cpp \
    main.cpp \
    corrsettingsdialog.cpp \
    corr_dcc.cpp \
    fileopendialog.cpp \
    subpixel_est.cpp \
    outlier_det.cpp \
    interp_vec.cpp \
    temp.cpp \
    run_corr.cpp \
    grid_gen.cpp \
    file_func.cpp \
    vectorscalingdialog.cpp \
    corr_dncc.cpp \
    batchsettings.cpp \
    corr_fft.cpp

FORMS += \
    corrsettingsdialog.ui \
    fileopendialog.ui \
    vectorscalingdialog.ui \
    batchsettings.ui

win32 {
    LIBS += -LC:/Windows/System32/libfftw3-3
    INCLUDEPATH += C:/Windows/System32/
}

macx {
    LIBS += -lfftw3 -lm
    INCLUDEPATH += /usr/local/include
}

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