Precompile .h files

I have a very short program written in boost :: xpressive

#include <iostream>
#include <boost/xpressive/xpressive.hpp>

using namespace boost::xpressive;

int main()
{
    std::string hello( "hello world!" );

    sregex rex = sregex::compile( "(\\w+) (\\w+)!" );
    smatch what;

    if( regex_match( hello, what, rex ) )
    {
        std::cout << what[0] << '\n'; // whole match
        std::cout << what[1] << '\n'; // first capture
        std::cout << what[2] << '\n'; // second capture
    }

    return 0;
}

      

        
        
        
      

    

This is Xpressive "hello world". It takes significantly longer to compile than the normal hello world. I think because the xpressive.hpp file is so huge. Is there a way to pre-compile or preprocess the .hpp file so that compilation is much faster?