.. _spkg_giac:

giac: A general purpose computer algebra system
===============================================

Description
-----------

-  Giac is a general purpose Computer algebra system by Bernard Parisse.
   It consists of:
-  a C++ library (libgiac).
-  a command line interpreter (icas or giac).
-  the built of the FLTK-based GUI (xcas) has been disabled in the
   spkg-install file.

-  The english documentation will be installed in:

   $SAGE_LOCAL/share/giac/doc/en/cascmd_en/index.html

-  Author's website with debian, ubuntu, macosx, windows package:

   http://www-fourier.ujf-grenoble.fr/~parisse/giac.html

-  The Freebsd port is math/giacxcas

Licence
-------

GPLv3+

Note: except the french html documentation which is freely
redistributable for non commercial only purposes. This doc has been
removed in the Sage package, see spkg-src


Upstream Contact
----------------

-  Bernard Parisse:
   http://www-fourier.ujf-grenoble.fr/~parisse/giac.html
-  Source file (giac-x.y.z-t.tar.gz) in:

   http://www-fourier.ujf-grenoble.fr/~parisse/debian/dists/stable/main/source/

Dependencies
------------

-  gettext, readline
-  giac will benefit of ntl, pari, mpfr, gsl, lapack but they should be
   already installed by sage.
-  giac can also benefit of mpfi for arithmetic on intervals.
-  The Documentation is pre-built, hevea or latex or ... are not needed
   to install the package.


Special Update/Build Instructions
---------------------------------

-  Use spkg-src to update this package

Type
----

standard


Version Information
-------------------

package-version.txt::

    1.6.0.47p3.p0


Equivalent System Packages
--------------------------

arch:

.. CODE-BLOCK:: bash

    $ sudo pacman -S  libgiac giac


conda:

.. CODE-BLOCK:: bash

    $ conda install giac


Debian/Ubuntu:

.. CODE-BLOCK:: bash

    $ sudo apt-get install  libgiac-dev xcas


Fedora/Redhat/CentOS:

.. CODE-BLOCK:: bash

    $ sudo yum install  giac giac-devel


freebsd:

.. CODE-BLOCK:: bash

    $ sudo pkg install math/giacxcas


nix:

.. CODE-BLOCK:: bash

    $ nix-env --install giac


opensuse:

.. CODE-BLOCK:: bash

    $ sudo zypper install giac-devel


void:

.. CODE-BLOCK:: bash

    $ sudo xbps-install  giac-devel


See https://repology.org/project/giac/versions


If the system package is installed, ./configure will check whether it can be used.