Problem linking libraries

[simon_breton]

Hello,

I am a new user of fortran and I am using Intel Visual Fortran with the command line, using a makefile.

I am using two NAG subroutines. Up to now I have replaced them with empty subroutines to be able to compile, but now I want to use them.

I have to say that I will be using the version of the libraries for compaq visual fortran. As is is written on page 3 of the document Porting Applications from

Compaq Visual Fortran to Intel Visual Fortran Compilers that All CVF library routines are supported (on Intel Visual Fortran), I believe this should not be a problem.

I have problems linking and compiling the libraries.

I tried with a very simple example program suggested in the document Tutorial for the NAG Fortran 90 Library which consists in using the following program to call the the subroutine nag_lib_ident:

PROGRAM tutorial_ex1a

USE nag_lib_support, ONLY : nag_lib_ident

IMPLICIT NONE

CALL nag_lib_ident

END PROGRAM tutorial_ex1a

When I type the command

tutorial_ex1a.f90 /o /LINK nagfl90.lib

I get the error message

LINK : fatal error LNK1104: cannot open file 'dfor.lib'

I really do not know what the problem is.

Can you help me with this?

Thanks a lot,

S. Breton

[TimP]

Support for CVF library calls in ifort is at the source level, not at binary level. There are very limited options for use of libraries built for CVF.

[simon_breton]

Hello,

Thank you for your answer.

Are you 100% sure that this problem with cannot open file 'dfor.lib' is related to library compatibility?

I am not sure I understand the difference between source level and binary level support.

If this is really the problem, that means I would have to buy the libraries for intel visual fortran? There is nothing I can do with the one I have for compaq visual fortran?

Thank you,

S. Breton

[Steven_L_Intel1]

The problem is that you are trying to link in a .lib that was built with CVF. This does not work. All Fortran code must be recompiled with Intel Visual Fortran in order to link with Intel Fortran-compiled objects.

So, yes, you will have to obtain from NAG the version of their library built for use with Intel Visual Fortran.