|  | .. _buildhosts:
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							|  | 
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							|  | ==========
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							|  | Buildhosts
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							|  | ==========
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							|  | 
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							|  | .. sidebar:: This article needs some work
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							|  | 
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							|  |    If you have any contribution send us your :pull:`PR <../pulls>`, see
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							|  |    :ref:`how to contribute`.
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							|  | 
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							|  | .. contents:: Contents
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							|  |    :depth: 2
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							|  |    :local:
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							|  |    :backlinks: entry
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							|  | 
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							|  | To get best results from build, its recommend to install additional packages
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							|  | on build hosts (see :ref:`searxng.sh`).::
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							|  | 
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							|  |   sudo -H ./utils/searxng.sh install buildhost
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							|  | 
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							|  | This will install packages needed by searx:
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							|  | 
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							|  | .. kernel-include:: $DOCS_BUILD/includes/searxng.rst
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							|  |    :start-after: START distro-packages
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							|  |    :end-before: END distro-packages
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							|  | 
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							|  | and packages needed to build docuemtation and run tests:
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							|  | 
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							|  | .. kernel-include:: $DOCS_BUILD/includes/searxng.rst
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							|  |    :start-after: START build-packages
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							|  |    :end-before: END build-packages
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							|  | 
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							|  | .. _docs build:
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							|  | 
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							|  | Build docs
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							|  | ==========
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							|  | 
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							|  | .. _Graphviz: https://graphviz.gitlab.io
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							|  | .. _ImageMagick: https://www.imagemagick.org
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							|  | .. _XeTeX: https://tug.org/xetex/
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							|  | .. _dvisvgm: https://dvisvgm.de/
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							|  | 
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							|  | .. sidebar:: Sphinx build needs
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							|  | 
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							|  |    - ImageMagick_
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							|  |    - Graphviz_
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							|  |    - XeTeX_
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							|  |    - dvisvgm_
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							|  | 
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							|  | Most of the sphinx requirements are installed from :origin:`setup.py` and the
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							|  | docs can be build from scratch with ``make docs.html``.  For better math and
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							|  | image processing additional packages are needed.  The XeTeX_ needed not only for
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							|  | PDF creation, its also needed for :ref:`math` when HTML output is build.
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							|  | 
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							|  | To be able to do :ref:`sphinx:math-support` without CDNs, the math are rendered
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							|  | as images (``sphinx.ext.imgmath`` extension).
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							|  | 
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							|  | Here is the extract from the :origin:`docs/conf.py` file, setting math renderer
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							|  | to ``imgmath``:
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							|  | 
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							|  | .. literalinclude:: ../conf.py
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							|  |    :language: python
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							|  |    :start-after: # sphinx.ext.imgmath setup
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							|  |    :end-before: # sphinx.ext.imgmath setup END
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							|  | 
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							|  | If your docs build (``make docs.html``) shows warnings like this::
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							|  | 
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							|  |    WARNING: dot(1) not found, for better output quality install \
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							|  |             graphviz from https://www.graphviz.org
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							|  |    ..
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							|  |    WARNING: LaTeX command 'latex' cannot be run (needed for math \
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							|  |             display), check the imgmath_latex setting
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							|  | 
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							|  | you need to install additional packages on your build host, to get better HTML
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							|  | output.
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							|  | 
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							|  | .. tabs::
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							|  | 
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							|  |    .. group-tab:: Ubuntu / debian
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							|  | 
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							|  |       .. code-block:: sh
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							|  | 
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							|  |          $ sudo apt install graphviz imagemagick texlive-xetex librsvg2-bin
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							|  | 
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							|  |    .. group-tab:: Arch Linux
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							|  | 
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							|  |       .. code-block:: sh
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							|  | 
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							|  |          $ sudo pacman -S graphviz imagemagick texlive-bin extra/librsvg
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							|  | 
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							|  |    .. group-tab::  Fedora / RHEL
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							|  | 
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							|  |       .. code-block:: sh
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							|  | 
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							|  |          $ sudo dnf install graphviz graphviz-gd texlive-xetex-bin librsvg2-tools
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							|  | 
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							|  | 
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							|  | For PDF output you also need:
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							|  | 
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							|  | .. tabs::
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							|  | 
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							|  |    .. group-tab:: Ubuntu / debian
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							|  | 
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							|  |       .. code:: sh
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							|  | 
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							|  |          $ sudo apt texlive-latex-recommended texlive-extra-utils ttf-dejavu
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							|  | 
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							|  |    .. group-tab:: Arch Linux
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							|  | 
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							|  |       .. code:: sh
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							|  | 
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							|  |       	 $ sudo pacman -S texlive-core texlive-latexextra ttf-dejavu
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							|  | 
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							|  |    .. group-tab::  Fedora / RHEL
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							|  | 
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							|  |       .. code:: sh
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							|  | 
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							|  |       	 $ sudo dnf install \
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							|  | 	        texlive-collection-fontsrecommended texlive-collection-latex \
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							|  | 		dejavu-sans-fonts dejavu-serif-fonts dejavu-sans-mono-fonts \
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							|  | 		ImageMagick
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							|  | 
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							|  | .. _sh lint:
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							|  | 
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							|  | Lint shell scripts
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							|  | ==================
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							|  | 
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							|  | .. _ShellCheck: https://github.com/koalaman/shellcheck
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							|  | 
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							|  | To lint shell scripts, we use ShellCheck_ - A shell script static analysis tool.
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							|  | 
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							|  | .. SNIP sh lint requirements
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							|  | 
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							|  | .. tabs::
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							|  | 
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							|  |    .. group-tab:: Ubuntu / debian
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							|  | 
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							|  |       .. code-block:: sh
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							|  | 
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							|  |          $ sudo apt install shellcheck
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							|  | 
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							|  |    .. group-tab:: Arch Linux
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							|  | 
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							|  |       .. code-block:: sh
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							|  | 
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							|  |          $ sudo pacman -S shellcheck
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							|  | 
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							|  |    .. group-tab::  Fedora / RHEL
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							|  | 
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							|  |       .. code-block:: sh
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							|  | 
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							|  |          $ sudo dnf install ShellCheck
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							|  | 
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							|  | .. SNAP sh lint requirements
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