NAG Fortran Library, Mark 24

FLW3224DCL - License Managed

Microsoft Windows, Intel Fortran

Post Release Information

This implementation is applicable to computer systems described in section 2.1 of the Installer's Note (see Installer's Note, Applicability).

Any additional information related to this implementation, that came to light after the release of this product, is described below.

  1. Using the GNU gfortran compiler
  2. It is possible to call this version of the NAG library from the GNU gfortran compiler supplied with the Cygwin tools. The instructions below have been tested with version 4.5.3 of that compiler.

    First it is necessary to compile the NAG module files for use with your version of the compiler. This process is described in the Users' Note for flw3224dcl, but is also given below for convenience.

    In a DOS command window, go to the folder containing your installed copy of the NAG Library, for example c:\Program Files\NAG\FL23\flw3224dcl. Then, the following commands will compile the modules:

      mkdir nag_interface_blocks_gfortran
      copy nag_interface_blocks\*.f90 nag_interface_blocks_gfortran
      cd nag_interface_blocks_gfortran
      gfortran -c nag_precisions.f90
      gfortran -c *_ib.f90
      gfortran -c *blas*.f90
      gfortran -c nag_long_names.f90
      gfortran -c nag_library.f90
    Note that the order of compilation is important because some modules depend on others. Once all the modules have successfully compiled you should have a complete set of .mod files. The associated .o object files may be deleted as they are not required.

    Once the module files are created, you can compile and link a program to the NAG library as shown below. Note that we use one of the NAG example programs for demonstration, and assume that the NAG library has been installed in the default location.

      gfortran -I"C:\Program Files\NAG\FL24\flw3224dcl\nag_interface_blocks_gfortran"
               e04ucfe.f90 "C:\Program Files\NAG\FL24\flw3224dcl\lib\FLW3224DC_nag.lib"
               -o e04ucfe.exe
    So long as your PATH environment variable contains the folder where the NAG DLL FLW3224DC_nag.dll is installed, you should now be able to run the program:
      e04ucfe.exe < e04ucfe.d

    It is not possible to link to the static libraries that are distributed with FLW3224DC, e.g. nag_nag_MD.lib, because the name mangling used by gfortran means the symbol names in your program do not match those in the static NAG libraries. Correct symbol names are only exported by the DLLs.