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* What is Sigmaid?
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  Sigmaid (SIGMA-calculus In Dedukti) is type-checker for Abadi and
  Cardelli simply-typed ς-calculus[1]. It can be used to produce
  Dedukti[2] and Coq[3] files.

  Sigmaid has a web page : http://sigmaid.gforge.inria.fr

* License

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This software is governed by the CeCILL-B license under French law and
abiding by the rules of distribution of free software.  You can use,
modify and/ or redistribute the software under the terms of the CeCILL-B
license as circulated by CEA, CNRS and INRIA at the following URL
"http://www.cecill.info".

As a counterpart to the access to the source code and rights to copy,
modify and redistribute granted by the license, users are provided
only with a limited warranty and the software's author, the holder of
the economic rights, and the successive licensors have only limited
liability.

In this respect, the user's attention is drawn to the risks associated
with loading, using, modifying and/or developing or reproducing the
software by the user in light of its specific status of free software,
that may mean that it is complicated to manipulate, and that also
therefore means that it is reserved for developers and experienced
professionals having in-depth computer knowledge. Users are therefore
encouraged to load and test the software's suitability as regards
their requirements in conditions enabling the security of their
systems and/or data to be ensured and, more generally, to use and
operate it in the same conditions as regards security.

The fact that you are presently reading this means that you have had
knowledge of the CeCILL-B license and that you accept its terms.
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* Installation
** Dependencies
   Sigmaid has the same dependencies than Dedukti :
   - OCaml
   - Menhir
   - GNU Make

   Sigmaid produces files for Dedukti and Coq.

** Compilation

   To compile, simply invoke
   #+BEGIN_SRC sh
   make
   #+END_SRC
   in Sigmaid's directory.

** Installation

   If you want Sigmaid to be installed system-wide, and if you have
   enough rights, invoke
   #+BEGIN_SRC sh
   make install
   #+END_SRC

** Check

   Sigmaid comes with a small example file =test.sigma=.  If you have
   Dedukti (v 2.2) installed, you can check this example with Dedukti
   using the command
   #+BEGIN_SRC sh
   make test.dko
   #+END_SRC.

   If you have Coq installed, you can check this example with Coq
   using the command
   #+BEGIN_SRC sh
   make test.vo
   #+END_SRC.

   You can do both with the command
   #+BEGIN_SRC sh
   make test
   #+END_SRC.

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* Author
  Sigmaid is written by [[https://who.rocq.inria.fr/Raphael.Cauderlier/][Raphaël Cauderlier]].

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* Footnotes

[1] Martin Abadi and Luca Cardelli, /A Theory of Objects/, Monographs in Computer Science, 1996

[2] http://dedukti.gforge.inria.fr/

[3] http://coq.inria.fr/

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