CMake is unable to find BehaviorTreeV3 since upgrading to v3.8

[koonpeng]

The latest release of BehaviorTree in ROS humble (version 3.8.0-1jammy.20221019.164714) changed the package config file from BehaviorTreeV3Config.cmake to behaviortree_cpp_v3Config.cmake, this causes current projects using BehaviorTree via cmake's find_package to break.

[facontidavide]

sorry about that.

On the other hand... it seems like there is an easy fix, isn't it?

[koonpeng]

Yeah, it can be easily fixed by looking for behaviortree_cpp_v3 instead. But given that this is not a major release, I thought this change is not intended.

[facontidavide]

I can understand you frustration, anyway that name was "wrong" in the first place...

Do you think it would be possible to add BOTH the names simultaneously? I mean adding (not replacing):

INSTALL(TARGETS ${BEHAVIOR_TREE_LIBRARY}
    EXPORT BehaviorTreeV3Config
    ARCHIVE DESTINATION ${BEHAVIOR_TREE_LIB_DESTINATION}
    LIBRARY DESTINATION ${BEHAVIOR_TREE_LIB_DESTINATION}
    RUNTIME DESTINATION ${BEHAVIOR_TREE_BIN_DESTINATION}
    )

install(EXPORT BehaviorTreeV3Config
    DESTINATION "${BEHAVIOR_TREE_LIB_DESTINATION}/BehaviorTreeV3/cmake"
    NAMESPACE BT::)

export(TARGETS ${PROJECT_NAME}
    NAMESPACE BT::
    FILE "${CMAKE_CURRENT_BINARY_DIR}/BehaviorTreeV3Config.cmake")
 

[facontidavide]

I think this is the solution to your problem.
I think that some ROS people will hate me, but that's life...

4ddc0b0

[facontidavide]

Sorry, but that doesn't work. if anybody with more knowledge about cmake wants to help he/she is very welcome.

I think the best course of action is to keep the new name behaviortree_cpp_v3