Using conda

Install Miniconda or Anaconda and then Slycot can be installed via the conda package manager from the conda-forge channel with the following command:

conda install -c conda-forge slycot

Using pip

Slycot can also be installed via the pip package manager. Install pip as per recommendations in pip’s documentation. At a minimum, Python and pip must be installed. If a pre-complied binary (i.e. “wheel”) is available it will be installed with no need for compilation. If not, pip will attempt to compile the package from source and thus the compilation dependencies will be required (scikit-build, gfortran, BLAS, etc.).

Pip can then be used to install Slycot with the command:

pip install slycot

From source

Unpack the course code to a directory of your choice, e.g. /path/to/slycot_src/

If you need to specify a specific compiler, set the environment variable FC before running the install:

# Linux/OSX:
export FC=/path/to/my/fortran

# Windows:
set FC=D:\path\to\my\fortran.exe

To build and install execute:

cd /path/to/slycot_src/
python setup.py install

You can also use conda to build and install Slycot from source:

conda build conda-recipe
conda install --use-local slycot

If you prefer to use the OpenBLAS library, a conda recipe is available in conda-recipe-openblas.

Additional tips for how to install Slycot from source can be found in the .travis.yml (commands used for Travis CI) and conda-recipe/ (conda pre-requisites) both which are included in the source code repository.

The hardest part about installing from source is getting a working version of FORTRAN and LAPACK installed on your system and working properly with Python. On Windows, the build system currently uses flang, which can be installed from conda-forge. Note that flang is incompatible with Python 2.7.

If you are using conda, you can also get working (binary) copies of LAPACK from conda-forge using the command:

conda install -c conda-forge lapack

Slycot will also work with the OpenBLAS libraries.

Note that in some cases you may need to set the LIBRARY_PATH environment variable to pick up dependencies such as -lpythonN.m (where N.m is the version of python you are using).