No CARLA module found

[werewolfdev]

Trying to connect to CARLA from QGIS via Connect to CARLA instance button ,but returning error : No carla module available

OS: [e.g. Ubuntu 18.04]
CARLA Version [e.g. CARLA 0.9.11]
Python version [e.g. 3.]
QGIS Version [e.g. 3.16]

[ohashi3399]

Dear Contributors,
I appreciate for your developing such intuitive understandable plugin for CARLA scenario maker.

I also faced same issue.
After I configured CARLA environmental setting which describes in your Guide section of repo and tried to connect via CARLA instance botton, returning error; No carla module available.

I hope anyone shares information for dealing with it.

The paths that I configured shows as below:

export CARLA_ROOT=$HOME/ubuntu/git/carla_0.9.11
export SCENARIO_RUNNER_ROOT=${CARLA_ROOT}/PythonAPI/scenario_runner
export PYTHONPATH=$PYTHONPATH:${CARLA_ROOT}/PythonAPI/carla/dist/carla-0.9.11-py3.7-linux-x86_64.egg
export PYTHONPATH=$PYTHONPATH:${CARLA_ROOT}/PythonAPI/carla/agents
export PYTHONPATH=$PYTHONPATH:${CARLA_ROOT}/PythonAPI/carla
export PYTHONPATH=$PYTHONPATH:${CARLA_ROOT}/PythonAPI

Screenshot of the above situation that I face shows as below.

My workspace shows as below(almost same as the above):

OS: [Ubuntu 18.04]
CARLA Version [CARLA 0.9.11]
Python version [3.7.3]
QGIS Version [3.16]

best regards.

[werewolfdev]

Hi @fabianoboril any insights on this issue will be really helpful

[fabianoboril]

Well, the error says all. Python cannot access the CARLA egg. Either the file does not exist, the path is wrong, the version is not compatible (Attention this is Python 3!)....

[ohashi3399]

Thanks for your quick reply.
Since I checked there's an .egg file in correct path, let me check compatible again.

[ohashi3399]

If @fabianoboril could share some idea for dealing with it, It would be very helpful.
I found CARLA built from python3.7.3, but this plugin built from python3.6 via following command:

colcon build --metas colcon_python.meta --cmake-args -DPYTHON_BINDING_VERSION=3.6 -DPYTHON_EXECUTABLE:FILEPATH=/usr/bin/python3.6 --metas colcon_python.meta

After I try to build plugin via following command (python3.7.3),

colcon build --metas colcon_python.meta --cmake-args -DPYTHON_BINDING_VERSION=3.7 -DPYTHON_EXECUTABLE:FILEPATH=/usr/bin/python3.7 --metas colcon_python.meta

get error shown as below:

~/ubuntu/setup/qgis_plugin$ colcon build --metas colcon_python.meta --cmake-args -DPYTHON_BINDING_VERSION=3.7 -DPYTHON_EXECUTABLE:FILEPATH=/usr/bin/python3.7 --metas colcon_python.meta
Starting >>> spdlog  
[0.640s] WARNING:colcon.colcon_ros.prefix_path.catkin:The path '/home/j0135118/ubuntu/setup/qgis_plugin/install/spdlog' in the environment variable CMAKE_PREFIX_PATH doesn't exist
Starting >>> ad_map_access_qgis
--- stderr: ad_map_access_qgis                                                           
CMake Warning:
  Manually-specified variables were not used by the project:

    PYTHON_BINDING_VERSION
    PYTHON_EXECUTABLE


---
Finished <<< ad_map_access_qgis [0.35s]
--- stderr: spdlog                             
CMake Warning:
  Manually-specified variables were not used by the project:

    PYTHON_BINDING_VERSION
    PYTHON_EXECUTABLE


---
Finished <<< spdlog [7.44s]
Starting >>> ad_map_opendrive_reader
Starting >>> ad_physics
--- stderr: ad_physics                                                                                      
CMake Warning:
  Manually-specified variables were not used by the project:

    PYTHON_BINDING_VERSION
    PYTHON_EXECUTABLE


/usr/bin/ld: /home/j0135118/ubuntu/setup/qgis_plugin/install/spdlog/lib/libspdlog.a(spdlog.cpp.o): relocation R_X86_64_TPOFF32 against `_ZGVZN6spdlog7details2os9thread_idEvE3tid' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: Nonrepresentable section on output
collect2: error: ld returned 1 exit status
make[2]: *** [libad_physics.so] Error 1
make[1]: *** [CMakeFiles/ad_physics.dir/all] Error 2
make: *** [all] Error 2
---
Failed   <<< ad_physics [4.02s, exited with code 2]
Aborted  <<< ad_map_opendrive_reader [8.75s]                                 

Summary: 2 packages finished [16.5s]
  1 package failed: ad_physics
  1 package aborted: ad_map_opendrive_reader
  4 packages had stderr output: ad_map_access_qgis ad_map_opendrive_reader ad_physics spdlog
  3 packages not processed

Warning messages seems like no problem, maybe my redundant option cause it.
Especially, I don't understand how to deal with this part of message.

relocation R_X86_64_TPOFF32 against `_ZGVZN6spdlog7details2os9thread_idEvE3tid' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: Nonrepresentable section on output
collect2: error: ld returned 1 exit status

It seems like error arise from ld command.

[FENGShuanglang]

I also meet this error:

OS: [Ubuntu 18.04]
CARLA Version [CARLA 0.9.12]
Python version [3.6]
QGIS Version [3.16]

export UE4_ROOT=~/Documents/UnrealEngine_4.26
source /opt/ros/melodic/setup.bash
source ~/Workspace/carla/carla-ros-bridge/catkin_ws/devel/setup.bash
export CARLA_ROOT=~/Documents/carla/Dist/CARLA_Shipping_0.9.12-dirty/LinuxNoEditor
export SCENARIO_RUNNER_ROOT=~/Documents/scenario_runner
export SCENARIO_RUNNER_PATH=~/Documents/scenario_runner

export PYTHONPATH=$PYTHONPATH:${CARLA_ROOT}/PythonAPI/carla/dist/carla-0.9.12-py3.6-linux-x86_64.egg
#export PYTHONPATH=$PYTHONPATH:${CARLA_ROOT}/PythonAPI/carla/dist/carla-0.9.12-py2.7-linux-x86_64.egg
export PYTHONPATH=$PYTHONPATH:${CARLA_ROOT}/PythonAPI/carla/agents
export PYTHONPATH=$PYTHONPATH:${CARLA_ROOT}/PythonAPI/carla
export PYTHONPATH=$PYTHONPATH:${CARLA_ROOT}/PythonAPI

[fabianoboril]

If you have issues with admap, please raise the issues in the respective repo. We will not address these aspects here.

[werewolfdev]

Sorry will mention this in traffic generation editor repo

[ronyshaji]

@werewolfdev Did you find a solution?