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The Coq documentation
=====================

The Coq documentation includes

- A Reference Manual
- A document presenting the Coq standard library

The documentation of the latest released version is available on the Coq
web site at [coq.inria.fr/documentation](http://coq.inria.fr/documentation).

Additionnally, you can view the documentation for the current master version at
<https://gitlab.com/coq/coq/-/jobs/artifacts/master/file/_install_ci/share/doc/coq/sphinx/html/index.html?job=documentation>.

The reference manual is written is reStructuredText and compiled
using Sphinx. See [`sphinx/README.rst`](sphinx/README.rst)
to learn more about the format that is used.

The documentation for the standard library is generated from
the `.v` source files using coqdoc.

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

### HTML documentation

To produce the complete documentation in HTML, you will need Coq dependencies
listed in [`INSTALL`](../INSTALL). Additionally, the Sphinx-based
reference manual requires Python 3, and the following Python packages:

    sphinx sphinx_rtd_theme beautifulsoup4 antlr4-python3-runtime pexpect sphinxcontrib-bibtex

You can install them using `pip3 install` or using your distribution's package
manager. E.g. under recent Debian-based operating systems (Debian 10 "Buster",
Ubuntu 18.04, ...) you can use:

    apt install python3-sphinx python3-pexpect python3-sphinx-rtd-theme \
                python3-bs4 python3-sphinxcontrib.bibtex python3-pip

Then, install the missing Python3 Antlr4 package:

    pip3 install antlr4-python3-runtime

Nix users should get the correct development environment to build the
HTML documentation from Coq's [`default.nix`](../default.nix) (note this
doesn't include the LaTeX packages needed to build the full documentation).

### Other formats

To produce the documentation in PDF and PostScript formats, the following
additional tools are required:

  - latex (latex2e)
  - pdflatex
  - dvips
  - makeindex

Install them using your package manager. E.g. on Debian / Ubuntu:

    apt install texlive-latex-extra texlive-fonts-recommended

Compilation
-----------

To produce all documentation about Coq in all formats, just run:

    ./configure           # (if you hadn't already)
    make doc


Alternatively, you can use some specific targets:

- `make doc-ps`
  to produce all PostScript documents

- `make doc-pdf`
  to produce all PDF documents

- `make doc-html`
  to produce all HTML documents

- `make sphinx`
   to produce the HTML version of the reference manual

- `make stdlib`
  to produce all formats of the Coq standard library


Also note the `-with-doc yes` option of `./configure` to enable the
build of the documentation as part of the default make target.


Installation
------------

To install all produced documents, do:

    make install-doc

This will install the documentation in `/usr/share/doc/coq` unless you
specify another value through the `-docdir` option of `./configure` or the
`DOCDIR` environment variable.