+ +
+

Buildhosts

+ +

To get best results from build, it’s recommend to install additional packages on +build hosts (see utils/searxng.sh).

+
+

Build and Development tools

+

To Install tools used by build and development tasks in once:

+
+
$ sudo -H ./utils/searxng.sh install buildhost
+
+
+
+

This will install packages needed by SearXNG:

+
+
$ sudo -H apt-get install -y \
+    python3-dev python3-babel python3-venv \
+    uwsgi uwsgi-plugin-python3 \
+    git build-essential libxslt-dev zlib1g-dev libffi-dev libssl-dev
+
+
+
+

and packages needed to build documentation and run tests:

+
+
$ sudo -H apt-get install -y \
+    firefox graphviz imagemagick texlive-xetex librsvg2-bin \
+    texlive-latex-recommended texlive-extra-utils fonts-dejavu \
+    latexmk shellcheck
+
+
+
+
+
+

Build docs

+ +

Most of the sphinx requirements are installed from git://setup.py and the +docs can be build from scratch with make docs.html. For better math and +image processing additional packages are needed. The XeTeX needed not only for +PDF creation, it’s also needed for Math equations when HTML output is build.

+

To be able to do Math support for HTML outputs in Sphinx without CDNs, the math are rendered +as images (sphinx.ext.imgmath extension).

+

Here is the extract from the git://docs/conf.py file, setting math renderer +to imgmath:

+
html_math_renderer = 'imgmath'
+imgmath_image_format = 'svg'
+imgmath_font_size = 14
+
+
+

If your docs build (make docs.html) shows warnings like this:

+
WARNING: dot(1) not found, for better output quality install \
+         graphviz from https://www.graphviz.org
+..
+WARNING: LaTeX command 'latex' cannot be run (needed for math \
+         display), check the imgmath_latex setting
+
+
+

you need to install additional packages on your build host, to get better HTML +output (install buildhost).

+
+
$ sudo apt install graphviz imagemagick texlive-xetex librsvg2-bin
+
+
+
+

For PDF output you also need:

+
+
$ sudo apt texlive-latex-recommended texlive-extra-utils ttf-dejavu
+
+
+
+
+
+

Lint shell scripts

+

To lint shell scripts we use ShellCheck - a shell script static analysis tool +(install buildhost).

+
+
$ sudo apt install shellcheck
+
+
+
+
+
+ + +
+