Error initializing loop functions

[MaximGo]

Hi!

I try to execute the project Dynamic_MPFA and get the following error:
[FATAL] Symbol "CPFA_loop_functions" not found

This is how I proceeded:

1. cd build
2. cmake ..
   Result:
   -- The C compiler identification is GNU 7.3.0
   -- The CXX compiler identification is GNU 7.3.0
   -- Check for working C compiler: /usr/bin/cc
   -- Check for working C compiler: /usr/bin/cc -- works
   -- Detecting C compiler ABI info
   -- Detecting C compiler ABI info - done
   -- Detecting C compile features
   -- Detecting C compile features - done
   -- Check for working CXX compiler: /usr/bin/c++
   -- Check for working CXX compiler: /usr/bin/c++ -- works
   -- Detecting CXX compiler ABI info
   -- Detecting CXX compiler ABI info - done
   -- Detecting CXX compile features
   -- Detecting CXX compile features - done
   -- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.1")
   -- Checking for module 'argos3_simulator'
   --   Found argos3_simulator, version 3.0.0-beta52
   -- Found OpenGL: /usr/lib/x86_64-linux-gnu/libOpenGL.so   
   -- Found GLUT: /usr/lib/x86_64-linux-gnu/libglut.so  
   -- Found GSL: /usr/include (found version "2.4")
   -- Found Lua52: /usr/lib/x86_64-linux-gnu/liblua5.2.so;/usr/lib/x86_64-linux-gnu/libm.so (found version "")
   -- Configuring done
   -- Generating done
   -- Build files have been written to: /home/max/Downloads/MPFA-ARGoS/Dynamic_MPFA/build
3. make
4. cd ..
5. argos3 -c experiments/Cluster_4nests.xml
   Result:
   [INFO] Loaded library "/usr/lib/argos3/libargos3plugin_simulator_footbot.so"
   [INFO] Loaded library "/usr/lib/argos3/libargos3plugin_simulator_eyebot.so"
   [INFO] Loaded library "/usr/lib/argos3/libargos3plugin_simulator_dynamics3d.so"
   [INFO] Loaded library "/usr/lib/argos3/libargos3plugin_simulator_genericrobot.so"
   [INFO] Loaded library "/usr/lib/argos3/libargos3plugin_simulator_prototype.so"
   [INFO] Loaded library "/usr/lib/argos3/libargos3plugin_simulator_entities.so"
   [INFO] Loaded library "/usr/lib/argos3/libargos3plugin_simulator_pointmass3d.so"
   [INFO] Loaded library "/usr/lib/argos3/libargos3plugin_simulator_dynamics2d.so"
   [INFO] Loaded library "/usr/lib/argos3/libargos3plugin_simulator_qtopengl.so"
   [INFO] Loaded library "/usr/lib/argos3/libargos3plugin_simulator_epuck.so"
   [INFO] Loaded library "/usr/lib/argos3/libargos3core_simulator.so"
   [INFO] Loaded library "/usr/lib/argos3/libargos3plugin_simulator_spiri.so"
   [INFO] Loaded library "/usr/lib/argos3/libargos3plugin_simulator_media.so"
   [INFO] Not using threads
   [INFO] Using random seed = 906778
   [INFO] Using simulation clock tick = 0.03125
   [INFO] Total experiment length in clock ticks = 28800
   [INFO] Loaded library "./build/source/CPFA/libCPFA_controller.so"
   [INFO] Loaded library "./build/source/CPFA/libCPFA_loop_functions.so"
   [FATAL] Error initializing loop functions
   [FATAL] Symbol "CPFA_loop_functions" not found

I am using Ubuntu 18.04.1 LTS and argos 3.0.0-beta52.

Thanks for your help!

[lukey11-zz]

Hi,
I think your Ubuntu and ARGoS should not be a problem. I run it in Ubuntu 16.04.
Which branch were you in? You can stay in "master" branch.
Generally, my process is

1. ./build.sh
2. argos3 -c experiments/yourXMLFile
   E.g. argos3 -c experiments/Random_dynamic_MPFA_10by10.xml

In addition, I just updated a line in the CMakeLists.txt,
change line 32 of CPFA/CMakeLists.txt
${QT_LIBRARIES} ${GLUT_LIBRARY} ${OPENGL_LIBRARY})
to
${ARGOS_QTOPENGL_LIBRARIES})

This will support the code in both MAC and Ubuntu.

I tried to run it again. It works. I have never seen your issue.

Let me know if you still have this issue.

Qi Lu