[Boost-users] Performance and linking (boost_regex)

Hi, i've encountered a significant performance difference with boost_regex between linking first to it and linking last to it. I guess it is not a issue specific to boost_regex, but maybe someone can clarify that. I have created the following test files and tested with gcc-4.1 and gcc-4.3 on 64-bit linux and gcc-4.1.2 on 32-bit linux. The results for 64bit are further down, but the results for 32-bit are very similar. **** # set your boost_extension (i.e. -mt) # export BOOST_EXT=-mt cat > test.hpp < test.cpp < int check(const std::string & test) { int result = 0; static boost::regex match("a*b*c*d*e*f*g*h*i*j*k*a*b*c*d*e*f*g*h*i*a*b*c*d*e*f*g*h*i*j*"); for (int i = 0; i < 1000; ++i) { result += boost::regex_match(test, match); } return result; } EOF cat > main.cpp <