NAG Fortran Library, Mark 26

FLMI6261FL - License Managed

Intel-based Mac, Mac OS X 64, GNU gfortran, Double Precision, 32-bit integers

Installer's Note


1. Introduction

This document provides implementation-specific information relating to the installation of the NAG Fortran Library specified in the title.

By installing this software you agree to NAG's Terms and Conditions. Please note that these Terms and Conditions are subject to change without notice. The NAG Software Licence Terms and Conditions and details of revisions are available from

2. Implementation Provided

2.1. Applicability

This implementation is a compiled, tested, ready-to-use version of the NAG Fortran Library that is considered suitable for operation on the computer systems detailed below:

hardware:          Intel(R) Mac 64 systems and compatible
operating system:  Mac OS X 10.12.2 Darwin Kernel Version 16.3.0 and compatible
Fortran compiler:  GNU gfortran compiler 6.3 and compatible

2.2. Derivation and Additional Test Platforms

This implementation was produced at NAG Ltd., Oxford on the computing system detailed below:

hardware:         Mac mini 5,1 - 2.3 GHz Intel Core i5
operating system: Mac OS X 10.12.2 Darwin Kernel Version 16.3.0
Fortran compiler: GNU gfortran compiler 6.3
vendor library:   Apple vecLib (Accelerate Framework 1.11)
compiler options: -fPIC -fno-second-underscore -m64

For details of any other systems on which this implementation has been tested, please see the Supplementary Information page on our website.

2.3. Supplementary Information

Please check the following URL:

for details of any new information related to the applicability or usage of this implementation. Details of any other systems on which it has been tested may also be found on this page.

3. Distribution

The software is available to download from any of the NAG websites (see Section 6 for contact details).

3.1. Contents

The following shows the directory and file organization of the implementation materials after installation.
                    |- in.html  (Installer's Note - this document)
            |- doc -|- un.html  (Users' Note)
            |       |- nag_tsandcs.txt  (NAG Software Licence Ts & Cs)
            |       |- libnag_nag.a      (static self-contained library
            |       |                     including NAG BLAS/LAPACK)
            |       |- libnag_nag.dylib  (shareable self-contained library
            |       |                     including NAG BLAS/LAPACK)
            |- lib -|- libnag_veclib.a   (static library requiring
            |       |                     vecLib BLAS/LAPACK)
            |       |- libnag_veclib.dylib  (shareable library requiring
            |       |                        vecLib BLAS/LAPACK)
flmi6261fl -|
            |- nag_interface_blocks -|- *  (interface blocks for NAG Library routines)
            |            |- source --|- ??????e.f90
            |            |
            |- examples -|- data ----|- ??????e.d
            |            |           |- ??????e.opt
            |            |
            |            |- results -|- ??????e.r
            |           |- nag_example*  (scripts to compile and run
            |- scripts -|                  NAG example programs)
            |           |
            |           |- nag_recompile_mods  (script to recompile
            |                                   interface blocks)
            |- c_headers -|- * (C/C++ header file and information)
            |           |- bin -|- *  (directories of license management
            |           |              binaries for supported platforms)
            |- license -|- README.txt
                        |- doc -|- *  (license management documentation)

The following shows the directory and file organization of the Library Manual materials after installation.

nagdoc_fl26 -|- index.html
             |- examples -|- baseresults -|- *.r.html
             |            |- source      -|- *.f90.html (syntax highlighted
             |            |                              source files)
             |            |- data        -|- *.d.html
             |                            |- *.opt.html
             |- html  -|- frontmatter -|- manconts.html  (main HTML index)
             |         |               |- *.html         (foreword &
             |         |                                  copyright notice)
             |         |
             |         |- genint -|- *.html  (general introductory material)
             |         |
             |         |- [a00-x07] -|- *conts.html  (chapter contents)
             |         |             |- *intro.html  (chapter introduction)
             |         |             |- *f.html      (routine documents)
             |         |
             |         |- figures -|- *.png  (figures and plotfiles)
             |         |
             |         |- styles -|- *.css  (CSS stylesheets)
             |                    |- *.js   (JavaScript)
             |- pdf   -|- frontmatter -|- manconts.html (main contents page)
                       |               |- manconts.pdf  (main contents page)
                       |               |- *.pdf  (NAG foreword and copyright
                       |                          pages)
                       |- genint -|- *.pdf  (general introductory material)
                       |- [a00-x07] -|- *conts.html   (chapter contents)
                       |             |- *conts.pdf    (chapter contents)
                       |             |- *intro.pdf    (chapter introduction)
                       |             |- *f.pdf        (routine documents)
                       |- styles -|- *.css  (CSS stylesheets)
                                  |- *.js   (JavaScript)

Details of the software are given in the Users' Note (un.html).

4. Installation

4.1. Installation of Library Software and Manual

If you have downloaded the Library materials, double click on FLMI6261FL.dmg to mount the disk image. You should see the files install.command, fl26.tgz, nag_tsandcs.txt, in.html, un.html and mk26-1_doc.tgz.

To install the Library software, double click on install.command and follow the instructions. By default, the materials will be installed under $HOME/NAG/, or if the directory $HOME does not exist, under /opt/NAG/. However, you may choose a different location. In this document we refer to the directory $HOME/NAG/flmi6261fl or /opt/NAG/flmi6261fl as [INSTALL_DIR]. This convention is also used in the Users' Note.

The install script can install the Library Manual in the same location as the NAG Library material or at some other location of your choice. Alternatively, the Library Manual may be viewed from the NAG website (

4.1.1. Silent Installation

From a command line, it is also possible to run install.command in unattended or silent modes. The installer takes command line switches for this purpose:

4.1.2. License Management

The use of this product is controlled by the Kusari license management system. This release of the Library uses version 2.2-88 of Kusari.

In order to enable the software, NAG will issue you with a license key. The license key is contained in a text file consisting of details of the software that will be enabled. For evaluation purposes a trial license may be used. Before obtaining a full license you need to know the Kusari hostid of the system on which you intend to use this product. How to do this is described below.

To request a license key, run the program khostid located in the license/bin/macx64/ subdirectory of the software distribution. This utility must be run from a command prompt. Return the information that it displays, together with the product code (in this case FLMI6261FL), by email to NAG. Alternatively, direct the output from this utility to a file and send both the file and the product code to NAG.

A short term (demonstration or trial) license key contains one or more lines like the following:

  FLMI6261F TRIAL 2018/11/12 "EMnxidA3oeoj0F1Yvi5ibxPjB7"
Specifically, it has a line containing the word TRIAL. Longer term license keys must be locked to a specific computer, i.e. they will enable the software on one computer only. These license keys typically include the word NODE or FULL instead of the word TRIAL above and may contain extra fields.

Once you have obtained one of the above license keys, the easiest way to install it is to store the text in a file,

The license software in this implementation automatically looks for these particular files and reads the first one found, so no other action is necessary. Alternatively, store the license in a file with a name and location of your choice, say,
The location of the license file, if it is not one of the default places listed above, must be made known to the NAG application by setting the environment variable NAG_KUSARI_FILE to the full pathname of the file before the application is invoked.

For example, in the C shell, type:

  setenv NAG_KUSARI_FILE [INSTALL_DIR]/license.lic
or in the Bourne shell, type:

Further details about Kusari and how it may be configured to suit your local circumstances (e.g. how to install the license key on a server) are included in the Kusari License Management documentation in the license/doc/ subdirectory of the software distribution. See also the Kusari FAQ:

4.2. Further Information

4.2.1. Checking the Installation

Access to the Library materials can be checked by running a few example programs following the advice given in the Users' Note, Section 3.1; a suitable sample would be D01AUF, E04UCA and F07ADF. The installation can also be tested using the scripts nag_example* (see Users' Note, Section 3.3).

5. Support from NAG

Please see

for information about the NAG Technical Support Service, including details of the NAG Technical Support Service contact points. We would also be delighted to receive your feedback on NAG's products and services.

6. Contact Addresses

Please see

for worldwide contact details for the Numerical Algorithms Group.