ImportError: /home/john/anaconda3/envs/genesis_env/lib/python3.9/site-packages/pymeshlab/lib/libmeshlab-common.so: undefined symbol: _ZdlPvm, version Qt_5

[OldJohn86]

trafficstars

(genesis_env) john@john-MS-7D99:~/github/Genesis$ python examples/tutorials/pbd_cloth.py [Genesis] [16:09:25] [INFO] ╭─────────────────────────────────────────────────────────────────────────────────────╮ [Genesis] [16:09:25] [INFO] │┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉ Genesis ┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉┈┉│ [Genesis] [16:09:25] [INFO] ╰─────────────────────────────────────────────────────────────────────────────────────╯ [Genesis] [16:09:25] [INFO] Running on [NVIDIA GeForce RTX 4080 SUPER] with backend gs.cuda. Device memory: 15.69 GB. [Genesis] [16:09:25] [INFO] 🚀 Genesis initialized. 🔖 version: 0.2.0, 🌱 seed: None, 📏 precision: '32', 🐛 debug: False, 🎨 theme: 'dark'. [Genesis] [16:09:25] [INFO] Scene created. [Genesis] [16:09:25] [INFO] Adding <gs.RigidEntity>. idx: 0, uid: , morph: <gs.morphs.Plane>, material: <gs.materials.Rigid>. [Genesis] [16:09:25] [INFO] Adding <gs.PBD2DEntity>. idx: 1, uid: <36bdce0>, morph: <gs.morphs.Mesh(file='/home/john/anaconda3/envs/genesis_env/lib/python3.9/site-packages/genesis/assets/meshes/cloth.obj')>, material: <gs.PBD.Cloth>. [Genesis] [16:09:25] [INFO] Remeshing for tetrahedralization... Traceback (most recent call last): File "/home/john/github/Genesis/examples/tutorials/pbd_cloth.py", line 26, in cloth_1 = scene.add_entity( File "/home/john/anaconda3/envs/genesis_env/lib/python3.9/site-packages/genesis/utils/misc.py", line 38, in wrapper return method(self, *args, **kwargs) File "/home/john/anaconda3/envs/genesis_env/lib/python3.9/site-packages/genesis/engine/scene.py", line 351, in add_entity entity = self._sim._add_entity(morph, material, surface, visualize_contact) File "/home/john/anaconda3/envs/genesis_env/lib/python3.9/site-packages/genesis/engine/simulator.py", line 143, in _add_entity entity = self.pbd_solver.add_entity(self.n_entities, material, morph, surface) File "/home/john/anaconda3/envs/genesis_env/lib/python3.9/site-packages/genesis/engine/solvers/pbd_solver.py", line 215, in add_entity entity = PBD2DEntity( File "/home/john/anaconda3/envs/genesis_env/lib/python3.9/site-packages/genesis/engine/entities/pbd_entity.py", line 169, in init super().init( File "/home/john/anaconda3/envs/genesis_env/lib/python3.9/site-packages/genesis/engine/entities/pbd_entity.py", line 34, in init super().init( File "/home/john/anaconda3/envs/genesis_env/lib/python3.9/site-packages/genesis/engine/entities/particle_entity.py", line 69, in init self.sample() File "/home/john/anaconda3/envs/genesis_env/lib/python3.9/site-packages/genesis/engine/entities/pbd_entity.py", line 187, in sample super().sample() File "/home/john/anaconda3/envs/genesis_env/lib/python3.9/site-packages/genesis/engine/entities/pbd_entity.py", line 47, in sample self._mesh.remesh(edge_len_abs=self.particle_size, fix=isinstance(self, PBD3DEntity)) File "/home/john/anaconda3/envs/genesis_env/lib/python3.9/site-packages/genesis/engine/mesh.py", line 102, in remesh import pymeshlab File "/home/john/anaconda3/envs/genesis_env/lib/python3.9/site-packages/pymeshlab/init.py", line 11, in from .pmeshlab import * ImportError: /home/john/anaconda3/envs/genesis_env/lib/python3.9/site-packages/pymeshlab/lib/libmeshlab-common.so: undefined symbol: _ZdlPvm, version Qt_5 [Genesis] [16:09:25] [INFO] 💤 Exiting Genesis and caching compiled kernels... (genesis_env) john@john-MS-7D99:~/github/Genesis$

[OldJohn86]

env: Ubuntu24.04 python3.9

Thanks!

[DongzhenHuangfu]

Hi, I just fix the issue by running following command before running my Python script: export LD_LIBRARY_PATH=/home/wyatt/anaconda3/lib/python3.11/site-packages/pymeshlab/lib:$LD_LIBRARY_PATH

What critical is:

$LD_LIBRARY_PATH needs to come after /home/wyatt/anaconda3/lib/python3.11/site-packages/pymeshlab/lib:

for you it seems to be: export LD_LIBRARY_PATH=/home/john/anaconda3/envs/genesis_env/lib/python3.9/site-packages/pymeshlab/lib:$LD_LIBRARY_PATH

refer to: https://github.com/cnr-isti-vclab/PyMeshLab/issues/341#issuecomment-2091695040

[alexis779]

On Ubuntu, Qt5 library may be incompatible with pymeshlab native library. As a workaround, give precedence to the python module QT library instead of the Ubuntu system QT library.

SITE_PACKAGES=`pip show pymeshlab | grep Location | sed 's|Location: ||'`
PYMESHLAB_LIB=$SITE_PACKAGES/pymeshlab/lib

Make sure the symbol is found

strings $PYMESHLAB_LIB/libQt5Core.so.5 | grep _ZdlPvm

Finally, configure LD_LIBRARY_PATH to overwrite QT library path,

LD_LIBRARY_PATH=$PYMESHLAB_LIB PYOPENGL_PLATFORM=glx python <script.py>