rely on post-noetic pybind11_catkin

ros-o's pybind11_catkin bundles a sufficient pybind11
and ensures python_add_library is available also with ros-o catkin,
where the implicit `find_package(Python COMPONENTS Interpreter)`
does not provide it by default anymore.

Author: v4hn

core/package.xml

@@ -17,6 +17,7 @@
 
 	<build_depend>roscpp</build_depend>
 	<build_depend>roslint</build_depend>
+	<build_depend>pybind11_catkin</build_depend>
 	<exec_depend>roscpp</exec_depend>
 
 	<depend>fmt</depend>

core/python/CMakeLists.txt

@@ -1,6 +1,4 @@
-# pybind11 must use the ROS python version
-set(PYBIND11_PYTHON_VERSION ${PYTHON_VERSION})
-find_package(pybind11 3.0 REQUIRED)
+find_package(pybind11_catkin REQUIRED)
 
 # C++ wrapper code
 add_subdirectory(bindings)

core/python/bindings/CMakeLists.txt

@@ -11,7 +11,7 @@ target_link_libraries(${PROJECT_NAME}_python_tools PUBLIC pybind11::opt_size)
 #catkin_lint: ignore undefined_target
 
 # moveit.task_constructor
-pybind11_add_module(pymoveit_mtc
+pybind_add_module(pymoveit_mtc
 	src/solvers.cpp
 	src/core.cpp
 	src/stages.cpp