NAG Library, Mark 27

NLMI627DGL - Licence Managed

macOS, 64-bit, GNU C or GNU Fortran, 32-bit integers

Installer's Note


1. Introduction

This document provides implementation-specific information relating to the installation of the NAG 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 Library that is considered suitable for operation on the computer systems detailed below:

hardware:          Intel (R) Mac 64 systems and compatible
operating system:  macOS 10.14 (Darwin 18.0.0) and compatible
Fortran compiler:  GNU gfortran version 8.3 and compatible
C compiler:        GNU gcc version 8.3 and compatible
vendor library:    Apple vecLib (Accelerate Framework) version 3.11 and compatible

The NAG AD Library is not included in this implementation.

The definitions and sizes of the C Integer and Pointer types used in this implementation are shown in Section 3.5 of the Users' Note.

2.2. Derivation and Additional Test Platforms

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

hardware:          Intel(R) Core(TM) i5-4278U  
operating system:  macOS 10.14 (Darwin 18.0.0)
Fortran compiler:  GNU gfortran version 8.3 
C compiler:        GNU gcc version 8.3 
vendor library:    Apple vecLib (Accelerate Framework) version 3.11
Fortran compiler options:  -O3 -fPIC -fno-second-underscore -m64 -fno-asynchronous-unwind-tables -ffree-line-length-512
C compiler options      :  -O3 -fPIC -m64 -msse -msse2 -mfpmath=sse -fexceptions -fno-asynchronous-unwind-tables

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

Please see the Apple web site for further information about vecLib (

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)
            |       |- alt_c_interfaces.html (Advice on calling FL interface from C and C++)
            |                 |- libnag_nag.a     (static self-contained library
            |                 |                    including NAG BLAS/LAPACK)
            |                 |- libnag_nag.dylib (shareable self-contained library
            |                 |                    including NAG BLAS/LAPACK)
            |         |- lib -|
            |         |       |- libnag_vl.a      (static library requiring
            |         |       |                    vecLib BLAS/LAPACK)
            |-  lp64 -|       |- libnag_vl.dylib  (shareable library requiring
            |         |       |                    vecLib BLAS/LAPACK)
            |         |
            |         |- include -|- *.h  (C include files for NAG Library routines)
            |         |
            |         |- nag_interface_blocks -|- * (Fortran interface blocks for
            |                                        NAG Library routines)
nlmi627dgl -|
            |              |- source --|- *.c       (Example programs for CL
            |              |                         interface routines)
            |- c_examples -|- data ----|- *.d
            |              |           |- *.opt
            |              |
            |              |- results -|- *.r
            |              |- source --|- *.f90     (Example programs for FL
            |              |                         interface routines)
            |- f_examples -|- data ----|- *.d
            |              |           |- *.opt
            |              |
            |              |- results -|- *.r
            |             |- c_examples ---|- *.c   (Example programs (subset)
            |             |                          for alternative C interface
            |- c_headers -|- cpp_examples -|- *.cpp  to FL routines)
            |             |
            |             |- data ---------|- *.d
            |           |- nag_example  (script to compile and run
            |- scripts -|                NAG example programs)
            |           |
            |           |- nagvars.{sh,csh}    (scripts to set environment variables
            |           |                       to location of NAG libraries, etc.)
            |           |
            |           |- nag_recompile_mods  (script to recompile
            |                                   Fortran interface blocks)
            |           |- bin -|- *  (directories of licence management
            |           |              binaries for supported platforms)
            |- license -|- README.txt
                        |- doc -|- *  (licence management documentation)

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

nagdoc_27   -|- index.html
             |- nlhtml   Generic Documentation of the NAG Library
             |- flhtml   Documentation of FL Interfaces
             |- clhtml   Documentation of CL Interfaces
             |- adhtml   Documentation of AD Library
             |- figures  Figures
             |- styles   CSS and JavaScript used by the documentation
             |- examples -|- baseresults HTML display of example results
                          |- source      HTML display of example sources
                          |- data        HTML display of example data files

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 nlmi627dgl.dmg to mount the disk image. You should see the files install.command, nl27.tgz, nag_tsandcs.txt, in.html, un.html and mk27_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/nlmi627dgl or /opt/NAG/nlmi627dgl 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. Licence Management

The use of this product is controlled by the Kusari licence 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 licence key as follows. The licence key is contained in a text file consisting of details of the software that will be enabled. For evaluation purposes a trial licence may be used. Before obtaining a full licence 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 licence 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 NLMI627DGL), 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) licence key contains one or more lines like the following:

  NLMI627DG TRIAL 2019/11/12 "EMnxidA3oeoj0F1Yvi5ibxPjB7"
Specifically, it has a line containing the word TRIAL. Longer term licence keys must be locked to a specific computer, i.e. they will enable the software on one computer only. These licence 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 licence keys, the easiest way to install it is to store the text in a file,

The licence software in this implementation automatically looks for these particular files and reads the first one found, so no further action is necessary. Alternatively, store the licence in a file with a name and location of your choice, say,
The location of the licence 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]/licence.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 licence key on a server) are included in the Kusari Licence 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, f07adf, d01sjc, f07adc and g05sjc. The installation can also be tested using the script 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.