error with ssyevr

[Lostnliar]

Hello everyone,

My program cant not run. It shows this error :
" In function 'evx(char*, char*, char*, long*, float*, long*, float*, float*, long*, long*, float*, long*, float*, float*, long*, float*, long*, long*, long*, long*) const':
error : undefined reference to `ssyevx_'
undefined reference to `dsyevr_'
undefined reference to `ssyevr_'
undefined reference to `dsyevx_'

Anybody helps me ?

[melrobin]

What are your includes in the source file?