[CMake] cmake link against Qt4's OpenGL
clinton at elemtech.com
clinton at elemtech.com
Fri Sep 26 15:26:47 EDT 2008
Then you must have a static build of Qt?
If you use CMake 2.6.0 or greater, it should work with a static Qt.
Clint
On Friday 26 September 2008 1:22:54 pm Linge Bai wrote:
> I still have the same problems:
> [15:20:04] ~/Desktop/myQt/hellogl$
> cmake .
> -- Found Qt-Version 4.4.2
> -- Configuring done
> -- Generating done
> -- Build files have been written to: /Users/lb353/Desktop/myQt/hellogl
> [15:20:08] ~/Desktop/myQt/hellogl$
> make
> Scanning dependencies of target exe
> [ 33%] Building CXX object CMakeFiles/exe.dir/main.o
> [ 66%] Building CXX object CMakeFiles/exe.dir/glwidget.o
> [100%] Building CXX object CMakeFiles/exe.dir/window.o
> Linking CXX executable exe
> Undefined symbols:
> "_glEnable", referenced from:
> GLWidget::initializeGL() in glwidget.o
> GLWidget::initializeGL() in glwidget.o
> "_glEnd", referenced from:
> GLWidget::makeObject() in glwidget.o
> "_glGenLists", referenced from:
> GLWidget::makeObject() in glwidget.o
> "_glMatrixMode", referenced from:
> GLWidget::resizeGL(int, int)in glwidget.o
> GLWidget::resizeGL(int, int)in glwidget.o
> "_glEndList", referenced from:
> GLWidget::makeObject() in glwidget.o
> "GLWidget::zRotationChanged(int)", referenced from:
> GLWidget::setZRotation(int) in glwidget.o
> "_glRotated", referenced from:
> GLWidget::paintGL() in glwidget.o
> GLWidget::paintGL() in glwidget.o
> GLWidget::paintGL() in glwidget.o
> "_glCallList", referenced from:
> GLWidget::paintGL() in glwidget.o
> "GLWidget::xRotationChanged(int)", referenced from:
> GLWidget::setXRotation(int) in glwidget.o
> "_glViewport", referenced from:
> GLWidget::resizeGL(int, int)in glwidget.o
> "_glDeleteLists", referenced from:
> GLWidget::~GLWidget()in glwidget.o
> GLWidget::~GLWidget()in glwidget.o
> GLWidget::~GLWidget()in glwidget.o
> "GLWidget::yRotationChanged(int)", referenced from:
> GLWidget::setYRotation(int) in glwidget.o
> "_glBegin", referenced from:
> GLWidget::makeObject() in glwidget.o
> "_glNewList", referenced from:
> GLWidget::makeObject() in glwidget.o
> "_glVertex3d", referenced from:
> GLWidget::extrude(double, double, double, double)in glwidget.o
> GLWidget::extrude(double, double, double, double)in glwidget.o
> GLWidget::extrude(double, double, double, double)in glwidget.o
> GLWidget::extrude(double, double, double, double)in glwidget.o
> GLWidget::quad(double, double, double, double, double, double,
> double, double)in glwidget.o
> GLWidget::quad(double, double, double, double, double, double,
> double, double)in glwidget.o
> GLWidget::quad(double, double, double, double, double, double,
> double, double)in glwidget.o
> GLWidget::quad(double, double, double, double, double, double,
> double, double)in glwidget.o
> GLWidget::quad(double, double, double, double, double, double,
> double, double)in glwidget.o
> GLWidget::quad(double, double, double, double, double, double,
> double, double)in glwidget.o
> GLWidget::quad(double, double, double, double, double, double,
> double, double)in glwidget.o
> GLWidget::quad(double, double, double, double, double, double,
> double, double)in glwidget.o
> "vtable for Window", referenced from:
> __ZTV6Window$non_lazy_ptr in main.o
> __ZTV6Window$non_lazy_ptr in window.o
> "Window::staticMetaObject", referenced from:
> __ZN6Window16staticMetaObjectE$non_lazy_ptr in window.o
> "_glOrtho", referenced from:
> GLWidget::resizeGL(int, int)in glwidget.o
> "_glLoadIdentity", referenced from:
> GLWidget::paintGL() in glwidget.o
> GLWidget::resizeGL(int, int)in glwidget.o
> "_glClear", referenced from:
> GLWidget::paintGL() in glwidget.o
> "vtable for GLWidget", referenced from:
> __ZTV8GLWidget$non_lazy_ptr in glwidget.o
> "_glShadeModel", referenced from:
> GLWidget::initializeGL() in glwidget.o
> "_glTranslated", referenced from:
> GLWidget::paintGL() in glwidget.o
> ld: symbol(s) not found
> collect2: ld returned 1 exit status
> make[2]: *** [exe] Error 1
> make[1]: *** [CMakeFiles/exe.dir/all] Error 2
> make: *** [all] Error 2
>
> I've also attached the source files, which are really simple Qt files if
> you are interested. Thank you very much for your reply.
>
> Linge
>
> On Fri, Sep 26, 2008 at 3:15 PM, <clinton at elemtech.com> wrote:
> > It should simply be:
> >
> > PROJECT ( COMBINED )
> > FIND_PACKAGE (Qt4 REQUIRED)
> > SET(QT_USE_QTOPENGL TRUE)
> > INCLUDE( ${QT_USE_FILE} )
> > ADD_EXECUTABLE(exe main.cpp glwidget.cpp window.cpp)
> > TARGET_LINK_LIBRARIES(exe ${QT_LIBRARIES})
> >
> > Clint
> >
> > On Friday 26 September 2008 1:02:43 pm Linge Bai wrote:
> > > Hi everybody,
> > >
> > > I have a project developed by Qt4's OpenGL, for example plenty of usage
> >
> > of
> >
> > > QGLWidget class. I want to use cmake to compile this project, instead
> > > of using qmake, because I need to combine another project to it. I can
> > > only link against Qt4 and OpenGL seperately. But I cannot link against
> > > Qt4's OpenGL by simply setting SET(QT_USE_QTOPENGL TRUE),
> > > ${QT_QTOPENGL_INCLUDE_DIR} or ${QT_QTOPENGL_LIBRARY}. I have no idea
> >
> > about
> >
> > > what else I need to add to my CMakeList.txt file:
> > >
> > > PROJECT ( COMBINED )
> > >
> > > FIND_PACKAGE (Qt4 REQUIRED)
> > > FIND_PACKAGE (OPENGL REQUIRED)
> > > SET(QT_USE_QTMAIN TRUE)
> > > SET(QT_USE_QTCORE TRUE)
> > > SET(QT_USE_QTGUI TRUE)
> > > SET(QT_USE_QTOPENGL TRUE)
> > > INCLUDE( ${QT_USE_FILE} )
> > >
> > > INCLUDE_DIRECTORIES(
> > > ${QT_INCLUDES}
> > > ${QT_INCLUDE_DIR}
> > > ${QT_QT_INCLUDE_DIR}
> > > ${QT_QTCORE_INCLUDE_DIR}
> > > ${QT_QTGUI_INCLUDE_DIR}
> > > ${QT_QTOPENGL_INCLUDE_DIR}
> > > )
> > >
> > > LINK_DIRECTORIES(
> > > ${QT_LIBRARIES}
> > > ${QT_LIBRARY_DIR}
> > > ${QT_QTOPENGL_LIBRARY}
> > > ${QT_QTGUI_LIBRARY}
> > > ${QT_QTCORE_LIBRARY}
> > > ${QT_MAIN_LIBRARY}
> > > )
> > >
> > > ADD_EXECUTABLE(exe main.cpp glwidget.cpp window.cpp)
> > > TARGET_LINK_LIBRARIES(exe ${QT_LIBRARIES})
> > >
> > > Could anyone please post a simple example to do this? Or could anyone
> > > please give me some suggestions? Any help would be greatly appreciated.
> > >
> > > thanks,
> > > Linge
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