Building Documentation ====================== To create a rendered copy of this documentation locally you can use the `Sphinx`_ tool to build and package the plain-text documents into HTML-formatted pages. If you are building the documentation for the first time then you will need to check that you have the required software packages, as described in the *Prerequisites* section that follows. .. note:: An online copy of the documentation is available at https://www.trustedfirmware.org/docs/tf-a, if you want to view a rendered copy without doing a local build. Prerequisites ------------- For building a local copy of the |TF-A| documentation you will need, at minimum: - Python 3 (3.5 or later) - PlantUML (1.2017.15 or later) Optionally, the `Dia`_ application can be installed if you need to edit existing ``.dia`` diagram files, or create new ones. You must also install the Python modules that are specified in the ``requirements.txt`` file in the root of the ``docs`` directory. These modules can be installed using ``pip3`` (the Python Package Installer). Passing this requirements file as an argument to ``pip3`` automatically installs the specific module versions required by |TF-A|. An example set of installation commands for Ubuntu 18.04 LTS follows, assuming that the working directory is ``docs``: .. code:: shell sudo apt install python3 python3-pip plantuml [dia] pip3 install [--user] -r requirements.txt .. note:: Several other modules will be installed as dependencies. Please review the list to ensure that there will be no conflicts with other modules already installed in your environment. Passing the optional ``--user`` argument to ``pip3`` will install the Python packages only for the current user. Omitting this argument will attempt to install the packages globally and this will likely require the command to be run as root or using ``sudo``. .. note:: More advanced usage instructions for *pip* are beyond the scope of this document but you can refer to the `pip homepage`_ for detailed guides. Building rendered documentation ------------------------------- Documents can be built into HTML-formatted pages from project root directory by running the following command. .. code:: shell make doc Output from the build process will be placed in: :: docs/build/html We also support building documentation in other formats. From the ``docs`` directory of the project, run the following command to see the supported formats. It is important to note that you will not get the correct result if the command is run from the project root directory, as that would invoke the top-level Makefile for |TF-A| itself. .. code:: shell make help Building rendered documentation from a container ------------------------------------------------ There may be cases where you can not either install or upgrade required dependencies to generate the documents, so in this case, one way to create the documentation is through a docker container. The first step is to check if `docker`_ is installed in your host, otherwise check main docker page for installation instructions. Once installed, run the following script from project root directory .. code:: shell docker run --rm -v $PWD:/TF sphinxdoc/sphinx \ bash -c 'cd /TF && \ pip3 install plantuml -r ./docs/requirements.txt && make doc' The above command fetches the ``sphinxdoc/sphinx`` container from `docker hub`_, launches the container, installs documentation requirements and finally creates the documentation. Once done, exit the container and output from the build process will be placed in: :: docs/build/html -------------- *Copyright (c) 2019, Arm Limited. All rights reserved.* .. _Sphinx: http://www.sphinx-doc.org/en/master/ .. _pip homepage: https://pip.pypa.io/en/stable/ .. _Dia: https://wiki.gnome.org/Apps/Dia .. _docker: https://www.docker.com/ .. _docker hub: https://hub.docker.com/repository/docker/sphinxdoc/sphinx