[Nek5000-users] Undefined reference to 'intp_do'

[nek5000-users at lists.mcs.anl.gov]

Dear Neks,

I am using the latest Nek5000, which replaced the old interpolation intpts() 
by the optional intp.h module.
When I call the subroutines of ‘intp_setup’ and ‘intp_do’ in the ‘intp.f’, 
there is always the  compilation error of undefined reference to ‘intp_setup’ and ‘intp_do’.

How should I fix the error?
Could anyone help me out?

Thanks,
Peng