Hi everyone, I'm new at this list and new using the boost library. I'm little by little learning about boost. Now I was trying to do this example: http://www.boost.org/doc/libs/1_36_0/doc/html/boost_asio/tutorial/tutdaytime... The source is here: http://www.boost.org/doc/libs/1_36_0/doc/html/boost_asio/tutorial/tutdaytime... But when I try to link I get this errors: /usr/include/boost/system/error_code.hpp undefined reference to `boost::system::get_posix_category()' The program is linking with the follows boost librarys: boost_filesystem-gcc42-mt boost_system-gcc42-mt boost_unit_test_framework-gcc42-mt Maybe I forgot something when I did compile boost? My version of boost is 1.36. I use Linux (Slackware 12.1 + KDE 4.1), gcc 4.2.3 and Eclipse+CDT Best Regards -- Daniel C. França Tecnosapiens: http://tecnosapiens.wordpress.com 24Quadros: http://24quadros.wordpress.com -- Daniel C. França Tecnosapiens: http://tecnosapiens.wordpress.com 24Quadros: http://24quadros.wordpress.com