With both EM/32 and LF90, I get "undefined external" when invoking intrinsic function

[R. T. (Fortran Man)]

With both EM/32 and LF90, I get "undefined external" when invoking intrinsic functions in my code. What's up?

[Lahey Support]

You need to make sure that your arguments match the intrinsic function arguments. Refer to the EM/32 Language Reference, "Chapter 11: Intrinsic Functions" in or the LF90 Language Reference, "Appendix C: Intrinsic Procedures."