Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 112 insertions, 0 deletions

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+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:
+
+- Python 3 (3.5 or later)
+- PlantUML (1.2017.15 or later)
+- Python modules specified in ``docs/requirements.txt``
+
+   You can install these with ``pip3`` (the Python Package Installer) by
+   passing it the requirements file above (with ``-r``). An optional ``--user``
+   argument will install them locally, but you have to add their location to
+   $PATH (pip will emit a warning). Alternatively, they can be installed
+   globally (but will probably require root privileges).
+
+   .. note::
+      Although not necessary, it is recommended you use a virtual environment.
+      More advanced usage instructions for *pip* are beyond the scope of this
+      document but you can refer to the `pip homepage`_ for detailed guides.
+
+- Optionally, the `Dia`_ application can be installed if you need to edit
+  existing ``.dia`` diagram files, or create new ones.
+
+An example set of installation commands for Ubuntu 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.
+
+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