Install
========================

Minimum requirement
------------------------

* `SageMath <https://www.sagemath.org>`_ version 9.2 (Release Date: 2020-10-24) or higher.
* `OpenSSL <https://www.openssl.org/>`_ package.
* `4ti2 <https://doc.sagemath.org/html/en/reference/interfaces/sage/interfaces/four_ti_2.html>`_ package in `SageMath <https://www.sagemath.org>`_.
* `Macaulay2 <http://www2.macaulay2.com/Macaulay2/>`_ version 1.14 or higher.

Step-by-Step Installation
-------------------------------

1. Install `openssl <https://www.openssl.org/>`_ package. You may use package manager like `Homebrew <https://brew.sh>`_.
2. Install `Macaulay2 <http://www2.macaulay2.com/Macaulay2/>`_. 
3. Install `SageMath <https://www.sagemath.org>`_.
4. Install `4ti2 <https://doc.sagemath.org/html/en/reference/interfaces/sage/interfaces/four_ti_2.html>`_ package via

.. code-block:: shell

   sage -i 4ti2

5. Install `PyOpenSSL <https://pypi.org/project/pyOpenSSL/>`_ package via

.. code-block:: shell

   sage -i pyopenssl

6. Install `StdPairs <https://github.com/byeongsuyu/StdPairs/>`_ package via

.. code-block:: shell

   sage -pip install stdpairs

Optional Package: PyNormaliz
---------------------------------

`PyNormaliz <https://doc.sagemath.org/html/en/reference/discrete_geometry/sage/geometry/polyhedron/backend_normaliz.html>`_ package is optional and used for sending an affine semigroup to the polyhedron generated by "saturation" of the given affine semigroup. To install this, type

.. code-block:: shell

   sage -i pynormaliz