Error

/usr/bin/ld: /tmp/ccrZDNIF.o: in function `boost::system::error_category::std_category::equivalent(int, std::error_condition const&) const':
bot.cpp:(.text._ZNK5boost6system14error_category12std_category10equivalentEiRKSt15error_condition[_ZNK5boost6system14error_category12std_category10equivalentEiRKSt15error_condition]+0xcc): undefined reference to `boost::system::generic_category()'
/usr/bin/ld: bot.cpp:(.text._ZNK5boost6system14error_category12std_category10equivalentEiRKSt15error_condition[_ZNK5boost6system14error_category12std_category10equivalentEiRKSt15error_condition]+0x118): undefined reference to `boost::system::generic_category()'
/usr/bin/ld: /tmp/ccrZDNIF.o: in function `boost::system::error_category::std_category::equivalent(std::error_code const&, int) const':
bot.cpp:(.text._ZNK5boost6system14error_category12std_category10equivalentERKSt10error_codei[_ZNK5boost6system14error_category12std_category10equivalentERKSt10error_codei]+0xcc): undefined reference to `boost::system::generic_category()'
/usr/bin/ld: bot.cpp:(.text._ZNK5boost6system14error_category12std_category10equivalentERKSt10error_codei[_ZNK5boost6system14error_category12std_category10equivalentERKSt10error_codei]+0x118): undefined reference to `boost::system::generic_category()'
/usr/bin/ld: bot.cpp:(.text._ZNK5boost6system14error_category12std_category10equivalentERKSt10error_codei[_ZNK5boost6system14error_category12std_category10equivalentERKSt10error_codei]+0x1fc): undefined reference to `boost::system::generic_category()'
/usr/bin/ld: /tmp/ccrZDNIF.o: in function `boost::asio::error::get_system_category()':
bot.cpp:(.text._ZN5boost4asio5error19get_system_categoryEv[_ZN5boost4asio5error19get_system_categoryEv]+0x8): undefined reference to `boost::system::system_category()'
collect2: error: ld returned 1 exit status
Compilation failed.