[Boost-users] A linking error on switch_statement. Can anyone with kindness help me?

I am using Dev-C++ with boost 1.34.1,the program is the following: ....................... typedef std::map IIPrimemap; IIPrimemap primemapvec; # define BetaKGre2 1 # define EqualToOne 2 #define ProductOfKPrime 3 ......................... (switch_statement(_1, case_statement<BetaKGre2> (var(result)=0), case_statement<EqualToOne> (var(result)=1), case_statement<ProductOfKPrime> (var(result)=bind(static_cast(std::pow), constant(-1.0),bind(&IIPrimemap::size,var(primemapvec)))), default_statement ( var(result)=234) ))(switchvalue); the complier told me no errors.But the linker told me that: nstantiated from `Arg::sig(std::pow), constant(-1.0),bind(&IIPrimemap::size,var(primemapvec)))), otherwise the program do not have such problems. How can I solve it? Can anyone with kindness help me?