This is an autotools-based build system to build and install routines from the Harwell Subroutine Library (HSL). This installation of HSL routines is used by some other COIN-OR projects, in particular Ipopt.

For use by COIN-OR, STFC provides special packages at

https://licences.stfc.ac.uk/product/coin-hsl

which can be build independently or within the buildsystem in this directory.

Version 2021.05.05 of the Coin-HSL packages include single-precision versions of HSL routines. These are also compiled if found.

Alternatively, STFC provides a package that includes only the routines MA27, MA28, and MC19, but has more liberal license terms, at

https://licences.stfc.ac.uk/product/coin-hsl-archive

This Coin-HSL Archive package can also be used with ThirdParty-HSL.

Prebuild libraries with many HSL routines, including these from coin-hsl, are available at https://licences.stfc.ac.uk/products/Software/HSL/LibHSL.

• HSL routines require a Fortran compiler. Some of them are written in Fortran 77, others in Fortran 90.

• MA57, HSL_MA77, and HSL_MA86 require BLAS, HSL_MA97 requires LAPACK. configure will look for a LAPACK installation (and assume that it includes BLAS), but if that does not succeed, the flags to link with LAPACK should be specified with the --with-lapack-lflags argument of configure.

• MA57, HSL_MA77, HSL_MA97, and MC68 can use METIS. configure will look for a METIS library and header, but if that does not succeed, the arguments --with-metis-lflags and --with-metis-cflags can be specified for configure.

  Both Metis 4 and Metis 5 can be used with ThirdParty-HSL.

To install BLAS, LAPACK, and METIS on a standard Debian-based Linux distribution, e.g., Ubuntu:

apt install libblas-dev liblapack-dev libmetis-dev

1. Obtain a tarball with Coin-HSL source code from https://licences.stfc.ac.uk/product/coin-hsl.

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   Note: It is YOUR RESPONSIBILITY to ensure that you are entitled to download and use this third party package.

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2. Inside the ThirdParty-HSL directory, unpack this tarball via

   gunzip coinhsl-x.y.z.tar.gz
   tar xf coinhsl-x.y.z.tar
   

3. Rename the directory coinhsl-x.y.z to coinhsl, or set a symbolic link:

   ln -s coinhsl-x.y.z coinhsl
   

4. Run ./configure. Use ./configure --help to see available options.

   The configure script will detect which source files are available in your coinhsl package and prepare the Makefile accordingly.

5. Run make to build the HSL library (namestem coinhsl).

6. Run make install to install the HSL library and header files.

For Coin-HSL Archive, follow the above steps, but download from https://licences.stfc.ac.uk/product/coin-hsl-archive and adjust the tarball names accordingly. Make sure that the directory with the source files is still called coinhsl.

If you intend for Ipopt to load the generated HSL library at runtime, then be aware that Ipopt looks for a library with a name different than the one build here: https://coin-or.github.io/Ipopt/OPTIONS.html#OPT_hsllib

You should thus either set option hsllib of Ipopt to the full path of the library build here (e.g., $libdir/libcoinhsl.so, $libdir/libcoinhsl.dylib, $bindir/coinhsl-2.dll), or rename the coinhsl library appropriately.

Do not do this if you intend to build Ipopt such that it links to the coinhsl library.