Hello. I'm trying to use the Boost regular expressions functions but it fails. I'm forced to write some programs in C++ at work - I usually work in java/python and I'm not up to date with C/C++ - and it was recommended I use the Boost libraries for various utilities. However, on linux, the regex functions don't work don't work for some reason. I reinstalled the latest version of the Boost libraries and everything seems fine (ie, I tried the graph container and it works great). I tried both on SuSe linux 10.2 and Ubuntu with gcc 4.1.2 and the latest Boost libs 1.33.1 but it fails at compile time. At first I thought I was doing something wrong, but then I tried both the examples provided in the Boost documentation and other examples/tutorials on Boost::regex on the net (ie ,the ones on OnLAMP of O'Reilly and others) and they fail too with the same error(s): "boost_regexp.o: In function `boost::basic_regex >::assign(char const*, char const*, unsigned int)': /usr/include/boost/regex/v4/basic_regex.hpp:254: undefined reference to `boost::basic_regex >::do_assign(char const*, char const*, unsigned int)'" the problem is when the assign method is called (either if i call the constructor with arguments or when I call the assign method of an boost::regex object). the problem is in the boost::regex code, more exactly in (***)/boost/regex/v4/basic_regex.hpp the code that produces this result is the same as shown in the Boost:regex documentation (http://www.boost.org/libs/regex/doc/partial_matches.html) Thanx.