How do I fix 'undefined reference to boost::system::system_category()' errors when compiling Boost programs?

Troubleshooting Compilation Issues with Boost

When compiling programs that rely on Boost libraries, you may encounter errors like "undefined reference to boost::system::system_category()." This issue stems from using a Boost library that requires the boost_system library.

Unlike all Boost libraries, boost_system is not part of the core Boost package. To resolve the compilation error, you must explicitly link your program against boost_system. When using gcc, append the following flag to your compiler command line:

-lboost_system

This flag ensures that the compiler links against the boost_system library, providing the necessary symbols and resolving the undefined reference error. By explicitly linking against boost_system, you can successfully compile your program and eliminate the error.

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