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How to Fix 'undefined reference to boost::system::system_category()' Linking Error on Ubuntu?

Patricia Arquette

Nov 11, 2024 am 02:00 AM

How to Fix

Linking Error: undefined reference to boost::system::system_category()

When attempting to compile a program utilizing Boost libraries on Ubuntu 11.10, an error message "undefined reference to boost::system::system_category()" may arise. This indicates an issue in linking the program to the Boost library.

Solution:

The error occurs because the program depends on the Boost library's system component, boost_system. To resolve the issue, add the linker option -lboost_system to the compiler command line. This instructs the compiler to link against the boost_system library.

For example, if your original compiler command is:

gcc -o my_program my_program.cpp

Modify it to include the linker option:

gcc -o my_program my_program.cpp -lboost_system

By adding this option, the compiler will locate and link the necessary boost_system library, which resolves the undefined reference error.

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