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I recently ran into this while fixing some catkin_lint problems.
See fkie/catkin_lint#78.
In short: yaml-cpp does not play nice with CMake's conventions. The name of the find-script uses yaml-cpp as the name, but the variables defined by it use YAML_CPP as the prefix.
catkin_simple (and actually regular Catkin as well, so I'm not sure this is a problem of catkin_simple per se), rightly assume if a find-script is called FindSomething.cmake, all variables defined by/in it are prefixed by Something (note capitalisation). yaml-cpp does not follow this convention and this causes your linking problems (ie: Catkin generates code to link against yaml-cpp_LIBRARIES, but the variable is actually called YAML_CPP_LIBRARIES).
| | 2 | No.2 Revision |
I recently ran into this while fixing some catkin_lint problems.
See fkie/catkin_lint#78.
In short: yaml-cpp does not play nice with CMake's conventions. The name of the find-script uses yaml-cpp as the name, but the variables defined by it use YAML_CPP as the prefix.
catkin_simple (and actually regular Catkin as well, so I'm not sure this is a problem of catkin_simple per se), rightly assume if a find-script is called FindSomething.cmake, all variables defined by/in it are prefixed by Something (note capitalisation). yaml-cpp does not follow this convention and this causes your linking problems (ie: Catkin CMake/Catkin generates code to link against yaml-cpp_LIBRARIES, but the variable is actually called YAML_CPP_LIBRARIES).
| | 3 | No.3 Revision |
I recently ran into this while fixing some catkin_lint problems.
See fkie/catkin_lint#78.
In short: yaml-cpp does not play nice with CMake's conventions. The name of the find-script uses yaml-cpp as the name, but the variables defined by it use YAML_CPP as the prefix.
catkin_simple (and actually regular Catkin as well, so I'm not sure this is a problem of catkin_simple per se), rightly assume if a find-script is called FindSomething.cmake, all variables defined by/in it are prefixed by Something (note capitalisation). capitalisation).
yaml-cpp does not follow this convention and this causes your linking problems (ie: CMake/Catkin generates code to link against yaml-cpp_LIBRARIES, but the variable is actually called YAML_CPP_LIBRARIES).
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