On 7 October 2014 10:28, Ivo Doko wrote: > On 2014-10-07 10:57, Jonathan Wakely wrote: >> >> It's probably simply >> >> https://gcc.gnu.org/wiki/VerboseDiagnostics#missing_static_const_definition > > > Once again I must apologise for spam, but this helped me solve the issue. > Changing the declaration of function xorshift_engine::shift from > > shift(const result_type& val, const int_fast8_t& sh) > > to > > shift(const result_type& val, int_fast8_t sh) > > fixes the linker problem with optimisation disabled. That's almost certainly an improvement anyway, the compiler can pass an int_fast8_t in a register more efficiently than passing by reference. But you haven't actually fixed the root cause of the problem, which is that you haven't defined your static variables.
