Hello,

I am currently writing a qt OpenGL application and I would like to build the project with cmake but unfortunately I am encountering some problems.

My CmakeFiles.txt looks like this:
Qt Code: 
  1. cmake_minimum_required(VERSION 2.6)
  2.  
  3. SET(PROJECTNAME plot)
  4.  
  5. PROJECT(${PROJECTNAME})
  6.  
  7. set(QT_USE_QTOPENGL TRUE)
  8.  
  9. # QT4 Handling
  10. FIND_PACKAGE( Qt4 REQUIRED )
  11.  
  12. INCLUDE(${QT_USE_FILE})
  13.  
  14. set(qtproject_SRCS
  15.       main.cpp
  16.       window.cpp
  17.       glwidget.cpp
  18.    )
  19.  
  20.  
  21. SET(foo_MOC_HDRS
  22.     glwidget.h
  23.     window.h
  24.    )
  25.  
  26. # After this call, foo_MOC_SRCS = moc_glwidget.cxx moc_window.cxx
  27. QT4_WRAP_CPP(foo_MOC_SRCS ${foo_MOC_HDRS})
  28.  
  29. ADD_EXECUTABLE(${PROJECTNAME} ${qtproject_SRCS} ${foo_MOC_SRCS})
  30.  
  31. TARGET_LINK_LIBRARIES(${PROJECTNAME} ${QT_LIBRARIES} )
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So far there is no problem but as soon as I run make I receive the following errors:

Qt Code: 
  1. Linking CXX executable plot
  2. Undefined symbols:
  3.   "_glEnableClientState", referenced from:
  4.       GLWidget::paintGL()     in glwidget.cpp.o
  5.       GLWidget::initializeGL()      in glwidget.cpp.o
  6.       GLWidget::initializeGL()      in glwidget.cpp.o
  7.   "_glDisableClientState", referenced from:
  8.       GLWidget::paintGL()     in glwidget.cpp.o
  9.   "_glGenBuffers", referenced from:
  10.       GLWidget::initializeGL()      in glwidget.cpp.o
  11.       GLWidget::initializeGL()      in glwidget.cpp.o
  12.   "_glEnable", referenced from:
  13.       GLWidget::initializeGL()      in glwidget.cpp.o
  14.   "_glTranslatef", referenced from:
  15.       GLWidget::paintGL()     in glwidget.cpp.o
  16.   "_glVertexPointer", referenced from:
  17.       GLWidget::paintGL()     in glwidget.cpp.o
  18.       GLWidget::paintGL()     in glwidget.cpp.o
  19.   "_glBindBuffer", referenced from:
  20.       GLWidget::paintGL()     in glwidget.cpp.o
  21.       GLWidget::paintGL()     in glwidget.cpp.o
  22.       GLWidget::paintGL()     in glwidget.cpp.o
  23.       GLWidget::initializeGL()      in glwidget.cpp.o
  24.   "_glBufferData", referenced from:
  25.       GLWidget::paintGL()     in glwidget.cpp.o
  26.       GLWidget::paintGL()     in glwidget.cpp.o
  27.       GLWidget::initializeGL()      in glwidget.cpp.o
  28.   "_glClearColor", referenced from:
  29.       GLWidget::initializeGL()      in glwidget.cpp.o
  30.   "_glColorPointer", referenced from:
  31.       GLWidget::paintGL()     in glwidget.cpp.o
  32.   "_glLoadIdentity", referenced from:
  33.       GLWidget::resizeGL(int, int)in glwidget.cpp.o
  34.       GLWidget::resizeGL(int, int)in glwidget.cpp.o
  35.       GLWidget::paintGL()     in glwidget.cpp.o
  36.   "_gluPerspective", referenced from:
  37.       GLWidget::resizeGL(int, int)in glwidget.cpp.o
  38.   "_glClear", referenced from:
  39.       GLWidget::paintGL()     in glwidget.cpp.o
  40.   "_glViewport", referenced from:
  41.       GLWidget::resizeGL(int, int)in glwidget.cpp.o
  42.   "_glMatrixMode", referenced from:
  43.       GLWidget::resizeGL(int, int)in glwidget.cpp.o
  44.       GLWidget::resizeGL(int, int)in glwidget.cpp.o
  45.   "_glDrawElements", referenced from:
  46.       GLWidget::paintGL()     in glwidget.cpp.o
  47.   "_glRotatef", referenced from:
  48.       GLWidget::paintGL()     in glwidget.cpp.o
  49.       GLWidget::paintGL()     in glwidget.cpp.o
  50.   "_glDrawArrays", referenced from:
  51.       GLWidget::paintGL()     in glwidget.cpp.o
  52. ld: symbol(s) not found
  53. collect2: ld returned 1 exit status
  54. make[2]: *** [plot] Error 1
  55. make[1]: *** [CMakeFiles/plot.dir/all] Error 2
  56. make: *** [all] Error 2
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Since all of these errors seem to be connected to my GLWidget (which is a derived class of QGLWidget) I think that cmake is not loading the OpenGL libs.

Do you have any suggestions?

Kind regards,
Harnz