undefined reference to `vtable for YAML::BadConversion' 报错的解决方法

 Bug

  在编译用到yaml程序的时候，遇到如下报错：

/home/liuhang/Documents/Momenta/catkin_ws/devel/lib/libloam.so: undefined reference to `vtable for YAML::BadConversion'
/home/liuhang/Documents/Momenta/catkin_ws/devel/lib/libloam.so: undefined reference to `typeinfo for YAML::BadConversion'
/home/liuhang/Documents/Momenta/catkin_ws/devel/lib/libloam.so: undefined reference to `YAML::BadConversion::~BadConversion()'
/home/liuhang/Documents/Momenta/catkin_ws/devel/lib/libloam.so: undefined reference to `YAML::detail::node_data::convert_to_map(std::shared_ptr)'

Solution

最终在yaml的github中找到了解决方法。

下载0.5.1版本的yaml https://github.com/jbeder/yaml-cpp/releases，把之前安装的yaml删掉，重新编译安装。

至于怎么删除以前版本的yaml，直接把之前编译yaml的文件夹全部删掉就OK了。

至于怎么重新编译安装，mkdir build, cd build, cmake .. , make, sudo make install 。

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