Undefined References from yaml-cpp During Build Process

[JustinKottinger]

Hello,

I am trying to build the demo's using the process outlined in the README on Ubuntu 18.04. The following is an outline of my process:

1. Install dependencies outlined in the repo sudo apt-get install g++ cmake libboost-program-options-dev libyaml-cpp-dev clang-tidy clang-format python3-matplotlib graphviz doxygen
2. mkdir build cd build cmake .. make

CMAKE claims to find all required libraries. However, during the build process, I get an error while building the planners. I have attached the error message below. I would appreciate some guidance on how to resolve this error. Thank you in advance !

[whoenig]

Hi, This is very strange! Could you try running make -k and see which targets work and which ones fail? (The -k flag tells make to keep going even if there is an error.)

[JustinKottinger]

Thank you for getting back to me.

The targets that worked:

• a_star
• assignment
• a_star_epsilon
• next_best_assignment

The targets that fail:

• mapf_prioritized_sipp
• cbs
• ecbs
• ecbs_ta
• cbs_ta
• sipp
• default_target (as a consequence of above errors)

I have also attached a file of the entire output for your records. libMultiRobotPlanning_make_output.txt

[whoenig]

Perhaps this helps: https://github.com/PX4/PX4-Avoidance/issues/173. Looks like you might have multiple yaml-cpp installed and would need to remove one of them.

[JustinKottinger]

Closing issue since this seems to be an issue with my machine and not the library.