Problème de linkage avec libGL.so

Version imprimable

Bonjour,

J'essaie de compiler un projet d'une quarantaine de fichiers sources sur Ubuntu 11.10 (64 bits).
Les fichiers compilent bien mais lors du linkage j'obtiens une erreur à cause de libGL.so.

Ligne de commande de linkage :

Code:

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g++ -o tracker -L. -L/usr/lib/x86_64-linux-gnu -lm -lgsl -lblas -lGLU -lglut -lGL -L/usr/local/lib64 -lopencv_core -lopencv_imgproc -lopencv_calib3d -lopencv_video -lopencv_features2d -lopencv_ml -lopencv_highgui -lopencv_objdetect -lopencv_contrib -lopencv_legacy -lncurses -lOpenCL -lkdtree 
obj/release/edge_tracker/main.o obj/release/edge_tracker/video_thread.o obj/release/edge_tracker/edge_tracker.o obj/release/edge_tracker/surf_thread.o obj/release/edge_tracker/video_tracker_thread.o obj/release/edge_tracker/particle_filter.o obj/release/edge_tracker/inertial_tracker_thread.o obj/release/edge_tracker/particle.o obj/release/edge_tracker/mag_grav_orient.o obj/release/edge_tracker/gl_widget.o obj/release/edge_tracker/gl_canvas.o obj/release/edge_tracker/main_window.o obj/release/edge_tracker/window.o obj/release/edge_tracker/image_processing.o obj/release/edge_tracker/edge_point_matches.o obj/release/edge_tracker/me_masks.o obj/release/edge_tracker/camera.o obj/release/edge_tracker/map_point.o obj/release/edge_tracker/ipt_view.o obj/release/edge_tracker/ipt_map.o obj/release/edge_tracker/ipt_tracker.o obj/release/munkres/munkres.o obj/release/geometry/Mesh.o obj/release/geometry/Quad.o obj/release/geometry/Triangle.o obj/release/geometry/Vertex.o obj/release/geometry/Object.o obj/release/geometry/KDTree.o obj/release/geometry/Ray.o obj/release/geometry/IntersectData.o obj/release/geometry/BoundingBox.o obj/release/geometry/Scene.o obj/release/xsens/example_linux.o obj/release/cl_surf/clutils.o obj/release/cl_surf/eventlist.o obj/release/cl_surf/utils.o obj/release/cl_surf/surf.o obj/release/cl_surf/fasthessian.o obj/release/cl_surf/cvutils.o obj/release/cl_surf/responselayer.o obj/release/edge_tracker/moc_video_thread.o obj/release/edge_tracker/moc_surf_thread.o obj/release/edge_tracker/moc_video_tracker_thread.o obj/release/edge_tracker/moc_inertial_tracker_thread.o obj/release/edge_tracker/moc_gl_widget.o obj/release/edge_tracker/moc_gl_canvas.o obj/release/edge_tracker/moc_main_window.o obj/release/edge_tracker/moc_window.o 
libcmt.a -lQtOpenGL -lQtGui -lQtXml -lQtCore

Voici l'erreur :

Code:

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/usr/bin/ld: obj/release/edge_tracker/edge_tracker.o: undefined reference to symbol 'glDepthFunc'
/usr/bin/ld: note: 'glDepthFunc' is defined in DSO /usr/lib/x86_64-linux-gnu/libGL.so so try adding it to the linker command line
/usr/lib/x86_64-linux-gnu/libGL.so: could not read symbols: Invalid operation
collect2: ld returned 1 exit status
scons: *** [tracker] Error 1
scons: building terminated because of errors.

Pourtant dans la ligne de commande j'ai bien : -L/usr/lib/x86_64-linux-gnu et -lGLU -lglut -lGL

lorsque je tape la commande : locate libGL.so j'obtiens :

Code:

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/usr/lib/fglrx/libGL.so
/usr/lib/fglrx/libGL.so.1
/usr/lib/fglrx/libGL.so.1.2
/usr/lib/x86_64-linux-gnu/libGL.so
/usr/lib/x86_64-linux-gnu/mesa/libGL.so
/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1
/usr/lib/x86_64-linux-gnu/mesa/libGL.so.1.2
/usr/lib32/fglrx/libGL.so.1
/usr/lib32/fglrx/libGL.so.1.2

j'ai également fait un export de /usr/lib/x86_64-linux-gnu dans les variables LDFLAGS et LD_LIBRARY_PATH

J'ai bien installé les paquets : fglrx-amdcccle-updates, fglrx-updates, fglrx-updates-dev, libgl1-mesa-dev, libglu1-mesa, libglu1-mesa -dev, libgl1-mesa-glx, libqt4-opengl, libqt4-opengl-dev, pyhton-opengl

D'où vient cette erreur de linkage ?

Bonne journée,

Merci

20/12/2011, 10h34
darkman19320

Salut,
As-tu essayé de mettre les '-L' et '-l' après les ".o"?

Merci pour ta réponse.

Alors j'ai essayé ça : (j'ai mis les .o au début)

Code:

g++ -o tracker obj/release/edge_tracker/main.o obj/release/edge_tracker/video_thread.o obj/release/edge_tracker/edge_tracker.o obj/release/edge_tracker/surf_thread.o obj/release/edge_tracker/video_tracker_thread.o obj/release/edge_tracker/particle_filter.o obj/release/edge_tracker/inertial_tracker_thread.o obj/release/edge_tracker/particle.o obj/release/edge_tracker/mag_grav_orient.o obj/release/edge_tracker/gl_widget.o obj/release/edge_tracker/gl_canvas.o obj/release/edge_tracker/main_window.o obj/release/edge_tracker/window.o obj/release/edge_tracker/image_processing.o obj/release/edge_tracker/edge_point_matches.o obj/release/edge_tracker/me_masks.o obj/release/edge_tracker/camera.o obj/release/edge_tracker/map_point.o obj/release/edge_tracker/ipt_view.o obj/release/edge_tracker/ipt_map.o obj/release/edge_tracker/ipt_tracker.o obj/release/munkres/munkres.o obj/release/geometry/Mesh.o obj/release/geometry/Quad.o obj/release/geometry/Triangle.o obj/release/geometry/Vertex.o obj/release/geometry/Object.o obj/release/geometry/KDTree.o obj/release/geometry/Ray.o obj/release/geometry/IntersectData.o obj/release/geometry/BoundingBox.o obj/release/geometry/Scene.o obj/release/xsens/example_linux.o obj/release/cl_surf/clutils.o obj/release/cl_surf/eventlist.o obj/release/cl_surf/utils.o obj/release/cl_surf/surf.o obj/release/cl_surf/fasthessian.o obj/release/cl_surf/cvutils.o obj/release/cl_surf/responselayer.o obj/release/edge_tracker/moc_video_thread.o obj/release/edge_tracker/moc_surf_thread.o obj/release/edge_tracker/moc_video_tracker_thread.o obj/release/edge_tracker/moc_inertial_tracker_thread.o obj/release/edge_tracker/moc_gl_widget.o obj/release/edge_tracker/moc_gl_canvas.o obj/release/edge_tracker/moc_main_window.o obj/release/edge_tracker/moc_window.o libcmt.a -lQtOpenGL -lQtGui -lQtXml -lQtCore -L. -L/usr/lib/x86_64-linux-gnu -lm -lgsl -lblas -lGLU -lglut -lGL -L/usr/local/lib64 -lopencv_core -lopencv_imgproc -lopencv_calib3d -lopencv_video -lopencv_features2d -lopencv_ml -lopencv_highgui -lopencv_objdetect -lopencv_contrib -lopencv_legacy -lncurses -lOpenCL -lkdtree

et j'obtiens cette fois-ci cette erreur :
Code:

1 2 3 4 /usr/bin/ld: obj/release/edge_tracker/main.o: undefined reference to symbol 'XInitThreads' /usr/bin/ld: note: 'XInitThreads' is defined in DSO /usr/lib/x86_64-linux-gnu/libX11.so.6 so try adding it to the linker command line /usr/lib/x86_64-linux-gnu/libX11.so.6: could not read symbols: Invalid operation collect2: ld returned 1 exit status
j'ai donc rajouté -lX11 et maintenant ça marche ! Merci beaucoup

Cela reste quand même assez mystèrieux pour moi le fait de devoir mettre les .o au début et les -L -l après ! mais bon ça marche

20/12/2011, 11h02
syl55
La compilation fonctionne mais à l'exécution de "tracker" j'obtiens une erreur OpenCL :
Code:

1 2 ./tracker OpenCL Error: -1001 (null) Getting platform IDs
Je n'ai rien trouvé sur internet à propos de cette erreur. Est ce que quelqu'un aurait une idée ?

Bonne journée,

Merci