Hello, I'm relatively new to C++ and Catkin. I am using OMPL in ROS Noetic for path-planning on a drone, but I'm having trouble with compiling it. I'm including the following files from the OMPL library:

#include <ompl/base/SpaceInformation.h>
#include <ompl/base/spaces/SE3StateSpace.h>
#include <ompl/geometric/PathGeometric.h>
#include <ompl/geometric/planners/informedtrees/ABITstar.h>
#include <ompl/config.h>

I included the OMPL directories and libraries in CMakeLists as follows:

...
find_package(ompl REQUIRED)
...

include_directories(
    SYSTEM 
    include
    ${catkin_INCLUDE_DIRS}
    ${Eigen3_INCLUDE_DIRS} 
    ${PCL_INCLUDE_DIRS}
    ${OMPL_INCLUDE_DIRS}
)

add_library(path_searching
    ...
    src/bitstar.cpp
)

target_link_libraries( path_searching
    ${catkin_LIBRARIES}
    ${OMPL_LIBRARIES}
)

When I try to compile the workspace, I get the following error:

/home/catkin_ws/src/path_searching/include/path_searching/bitstar.h:4:10: fatal error: ompl/base/SpaceInformation.h: No such file or directory
4 | #include <ompl/base/SpaceInformation.h>
  |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.

When I look in "/opt/ros/noetic/include", I see that there is a folder called "ompl-1.6", which has one folder called "ompl". If I copy the "ompl" folder to "/opt/ros/noetic/include", it compiles without any errors but this feels like a very hacky workaround. I've tried adding "/opt/ros/noetic/include/ompl-1.6/ompl" to include_directories in CMakeLists, but it didn't work. Also, I tried including the files as:

#include <ompl-1.6/ompl/base/SpaceInformation.h>
#include <ompl-1.6/ompl/base/spaces/SE3StateSpace.h>
#include <ompl-1.6/ompl/geometric/PathGeometric.h>
#include <ompl-1.6/ompl/geometric/planners/informedtrees/ABITstar.h>
#include <ompl-1.6/ompl/config.h>

But this gave the following error:

/opt/ros/noetic/include/ompl-1.6/ompl/base/SpaceInformation.h:40:10: fatal error: ompl/base/State.h: No such file or directory
40 | #include "ompl/base/State.h"
   |          ^~~~~~~~~~~~~~~~~~~
compilation terminated.