porting issue

[sajis997]

Hello forum


I have developed a small opengl application with Qt. Not i am porting the application to the new qt version qt 4.8.0

I having the following linker problem while linking

GroupBoxCommandExtendedBox.o moc_LabelCounter.o moc_FrustumMainWidget.o moc_OrthoMainWidget.o moc_PerspectiveMainWidget.o moc_SharedWidgetData.o moc_glWidgetWorldSpace.o moc_glWidgetScreenSpace.o moc_ProjectionMainWindow.o moc_GroupBoxCommandExtendedBox.o    -L/usr/lib/i386-linux-gnu -L/usr/X11R6/lib -lQtOpenGL -lQtGui -lQtCore -lGL -lpthread 
glWidgetWorldSpace.o: In function `GLWidgetWorldSpace::worldReshape(int, int)':
/home/sajjad/Documents/realtimerendering/projection/glWidgetWorldSpace.cpp:85: undefined reference to `gluPerspective'
glWidgetScreenSpace.o: In function `GLWidgetScreenSpace::screenReshape(int, int)':
/home/sajjad/Documents/realtimerendering/projection/glWidgetScreenSpace.cpp:95: undefined reference to `gluPerspective'
/home/sajjad/Documents/realtimerendering/projection/glWidgetScreenSpace.cpp:125: undefined reference to `gluLookAt'
collect2: ld returned 1 exit status
make: *** [projection] Error 1

GroupBoxCommandExtendedBox.o moc_LabelCounter.o moc_FrustumMainWidget.o moc_OrthoMainWidget.o moc_PerspectiveMainWidget.o moc_SharedWidgetData.o moc_glWidgetWorldSpace.o moc_glWidgetScreenSpace.o moc_ProjectionMainWindow.o moc_GroupBoxCommandExtendedBox.o    -L/usr/lib/i386-linux-gnu -L/usr/X11R6/lib -lQtOpenGL -lQtGui -lQtCore -lGL -lpthread 
glWidgetWorldSpace.o: In function `GLWidgetWorldSpace::worldReshape(int, int)':
/home/sajjad/Documents/realtimerendering/projection/glWidgetWorldSpace.cpp:85: undefined reference to `gluPerspective'
glWidgetScreenSpace.o: In function `GLWidgetScreenSpace::screenReshape(int, int)':
/home/sajjad/Documents/realtimerendering/projection/glWidgetScreenSpace.cpp:95: undefined reference to `gluPerspective'
/home/sajjad/Documents/realtimerendering/projection/glWidgetScreenSpace.cpp:125: undefined reference to `gluLookAt'
collect2: ld returned 1 exit status
make: *** [projection] Error 1

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I have opengl driver installed in my system and it is functional as i have run the qt demos


Any hint to get around this problem ?


Regards
Sajjadul

[amleto]

compare the opengl demo .pro files to your .pro file. What was your previous version of Qt?

[sajis997]

Hi
it was done done in qt 4.4 . There is no substantial change i believe in qt 4.8.

I included the .pro file for you review

QT += opengl
HEADERS += \
    LabelCounter.h \
    FrustumMainWidget.h \
    OrthoMainWidget.h \
    PerspectiveMainWidget.h \
    SharedWidgetData.h \
    glWidgetWorldSpace.h \
    glWidgetScreenSpace.h \
    glm.h \
    ProjectionMainWindow.h \
    singleton.h \
    GLToolkit.h \
    GroupBoxCommandExtendedBox.h
 
SOURCES += \
    LabelCounter.cpp \
    FrustumMainWidget.cpp \
    OrthoMainWidget.cpp \
    PerspectiveMainWidget.cpp \
    SharedWidgetData.cpp \
    glWidgetWorldSpace.cpp \
    glWidgetScreenSpace.cpp \
    glm.cpp \
    ProjectionMainWindow.cpp \
    main.cpp \
    GLToolkit.cpp \
    GroupBoxCommandExtendedBox.cpp
 
FORMS += \
    projection.ui \
    perspective.ui \
    ortho.ui \
    frustum.ui

QT += opengl
HEADERS += \
    LabelCounter.h \
    FrustumMainWidget.h \
    OrthoMainWidget.h \
    PerspectiveMainWidget.h \
    SharedWidgetData.h \
    glWidgetWorldSpace.h \
    glWidgetScreenSpace.h \
    glm.h \
    ProjectionMainWindow.h \
    singleton.h \
    GLToolkit.h \
    GroupBoxCommandExtendedBox.h

SOURCES += \
    LabelCounter.cpp \
    FrustumMainWidget.cpp \
    OrthoMainWidget.cpp \
    PerspectiveMainWidget.cpp \
    SharedWidgetData.cpp \
    glWidgetWorldSpace.cpp \
    glWidgetScreenSpace.cpp \
    glm.cpp \
    ProjectionMainWindow.cpp \
    main.cpp \
    GLToolkit.cpp \
    GroupBoxCommandExtendedBox.cpp

FORMS += \
    projection.ui \
    perspective.ui \
    ortho.ui \
    frustum.ui

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Thanks
Sajjadul

[norobro]

Here you go: QTBUG-12227

As stated in the comments, add the following to your project file:

LIBS += -lGLU

LIBS += -lGLU

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