Build Error: No module named 'dynamic_reconfigure'

[yu-sheng-vincent]

Hi,

To incorporate the latest pcl I build pcl from source, and I need to build perception_pcl as well. However, I got this error when running 'make' for pcl_ros:

Traceback (most recent call last):
File "/home/gmr/gmr_repo/perception_pcl/pcl_ros/cfg/ExtractIndices.cfg", line 6, in
from dynamic_reconfigure.parameter_generator_catkin import *;
ModuleNotFoundError: No module named 'dynamic_reconfigure'
Traceback (most recent call last):
File "/home/gmr/gmr_repo/perception_pcl/pcl_ros/cfg/EuclideanClusterExtraction.cfg", line 5, in
from dynamic_reconfigure.parameter_generator_catkin import *
ModuleNotFoundError: No module named 'dynamic_reconfigure'

---

Environment:
branch: tag-1.7.5
rosversion: noetic
pcl: 1.14.0

Also my system path looks fine:
user$ echo $CMAKE_PREFIX_PATH
/opt/ros/noetic:/usr/local
user$ echo $PYTHONPATH
/opt/ros/noetic/lib/python3/dist-packages

The wierd thing is if I keep doing random things, such as open a new terminal or restart the computer, sometimes it can be successfully built. Does anyone know this problem or have any idea? Thanks!!