Commit graph

16 commits

Author SHA1 Message Date
Peter Maydell
bf3f857342 docs: Require Sphinx 1.6 or better
Versions of Sphinx older than 1.6 can't build all of our documentation,
because they are too picky about the syntax of the argument to the
option:: directive; see Sphinx bugs #646, #3366:

  https://github.com/sphinx-doc/sphinx/issues/646
  https://github.com/sphinx-doc/sphinx/issues/3366

Trying to build with a 1.4.x Sphinx fails with
 docs/system/images.rst:4: SEVERE: Duplicate ID: "cmdoption-qcow2-arg-encrypt"
and a 1.5.x Sphinx fails with
 docs/system/invocation.rst:544: WARNING: Malformed option description '[enable=]PATTERN', should look like "opt", "-opt
args", "--opt args", "/opt args" or "+opt args"

Update our needs_sphinx setting to indicate that we require at least
1.6.  This will allow configure to fall back to "don't build the
docs" rather than causing the build to fail entirely, which is
probably what most users building on a host old enough to have such
an old Sphinx would want; if they do want the docs then they'll have
a useful indication of what they need to do (upgrade Sphinx!) rather
than a confusing error message.

In theory our distro support policy would suggest that we should
support building on the Sphinx shipped in those distros, but:
 * EPEL7 has Sphinx 1.2.3 (which we've never supported!)
 * Debian Stretch has Sphinx 1.4.8

Trying to get our docs to work with Sphinx 1.4 is not tractable
for the 5.0 release and I'm not sure it's worthwhile effort anyway;
at least with this change the build as a whole now succeeds.

Thanks to John Snow for doing the investigation and testing to
confirm what Sphinx versions fail in what ways and what distros
shipped what.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2020-04-14 17:19:38 +01:00
Peter Maydell
e22684e34d docs/conf.py: Raise ConfigError for bad Sphinx Python version
Raise ConfigError rather than VersionRequirementError when we detect
that the Python being used by Sphinx is too old.

Currently the way we flag the Python version problem up to the user
causes Sphinx to print an unnecessary Python stack trace as well as
the information about the problem; in most versions of Sphinx this is
unavoidable.

The upstream Sphinx developers kindly added a feature to allow
conf.py to report errors to the user without the backtrace:
  be608ca231
but the exception type they chose for this was ConfigError.

Switch to ConfigError, which won't make any difference with currently
deployed Sphinx versions, but will be prettier one day when the user
is using a Sphinx version with the new feature.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20200313163616.30674-1-peter.maydell@linaro.org
2020-03-30 13:18:59 +01:00
Peter Maydell
9b26a61093 Update copyright date for user-facing copyright strings
Update the copyright date to 2020 for the copyright strings which are
user-facing and represent overall copyright info for all of QEMU.

Reported-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20200316112006.19107-1-peter.maydell@linaro.org
2020-03-22 11:16:21 +00:00
Peter Maydell
de1572ca49 docs: Create defs.rst.inc as a place to define substitutions
Rather than accumulating generally useful rST substitution
definitions in individual rST files, create a defs.rst.inc where we
can define these.  To start with it has the |qemu_system| definition
from qemu-block-drivers.rst.

Add a comment noting a pitfall where putting literal markup in the
definition of |qemu_system| makes it misrender manpage output; this
means the point-of-use must handle the literal markup (which is
almost always done by having it inside a parsed-literal block).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Kashyap Chamarthy <kchamart@redhat.com>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20200228153619.9906-15-peter.maydell@linaro.org
2020-03-06 10:04:58 +00:00
Peter Maydell
758b617af8 configure: Check that sphinx-build is using Python 3
Currently configure's has_sphinx_build() check simply runs a dummy
sphinx-build and either passes or fails.  This means that "no
sphinx-build at all" and "sphinx-build exists but is too old" are
both reported the same way.

Further, we want to assume that all the Python we write is running
with at least Python 3.5; configure checks that for our scripts, but
Sphinx extensions run with whatever Python version sphinx-build
itself is using.

Add a check to our conf.py which makes sphinx-build fail if it would
be running our extensions with an old Python, and handle this
in configure so we can report failure helpfully to the user.
This will mean that configure --enable-docs will fail like this
if the sphinx-build provided is not suitable:

Warning: sphinx-build exists but it is either too old or uses too old a Python version

ERROR: User requested feature docs
       configure was not able to find it.
       Install texinfo, Perl/perl-podlators and a Python 3 version of python-sphinx

(As usual, the default is to simply not build the docs, as we would
if sphinx-build wasn't present at all.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-Id: <20200213175647.17628-3-peter.maydell@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2020-02-15 11:41:49 +01:00
Peter Maydell
6803d6e9a7 docs/sphinx: Add new hxtool Sphinx extension
Some of our documentation includes sections which are created
by assembling fragments of texinfo from a .hx source file into
a .texi file, which is then included from qemu-doc.texi or
qemu-img.texi.

For Sphinx, rather than creating a file to include, the most natural
way to handle this is to have a small custom Sphinx extension which
reads the .hx file and process it.  So instead of:
 * makefile produces foo.texi from foo.hx
 * qemu-doc.texi says '@include foo.texi'
we have:
 * qemu-doc.rst says 'hxtool-doc:: foo.hx'
 * the Sphinx extension for hxtool has code that runs to handle that
   Sphinx directive which reads the .hx file and emits the appropriate
   documentation contents

This is pretty much the same way the kerneldoc extension works right
now. It also has the advantage that it should work for third-party
services like readthedocs that expect to build the docs directly with
sphinx rather than by invoking our makefiles.

In this commit we implement the hxtool extension.

Note that syntax errors in the rST fragments will be correctly
reported to the user with the filename and line number within the
hx file.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20200124162606.8787-4-peter.maydell@linaro.org
2020-02-03 10:46:32 +00:00
Peter Maydell
22b5ea75e1 docs/conf.py: Enable use of kerneldoc sphinx extension
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20190521122519.12573-4-peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-12-17 19:36:57 +01:00
Peter Maydell
27a296fce9 qemu-ga: Convert invocation documentation to rST
The qemu-ga documentation is currently in qemu-ga.texi in
Texinfo format, which we present to the user as:
 * a qemu-ga manpage
 * a section of the main qemu-doc HTML documentation

Convert the documentation to rST format, and present it to
the user as:
 * a qemu-ga manpage
 * part of the interop/ Sphinx manual

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Tested-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Message-id: 20190905131040.8350-1-peter.maydell@linaro.org
2019-09-13 16:05:01 +01:00
John Snow
cd231e13bd sphinx: add qmp_lexer
Sphinx, through Pygments, does not like annotated json examples very
much. In some versions of Sphinx (1.7), it will render the non-json
portions of code blocks in red, but in newer versions (2.0) it will
throw an exception and not highlight the block at all. Though we can
suppress this warning, it doesn't bring back highlighting on non-strict
json blocks.

We can alleviate this by creating a custom lexer for QMP examples that
allows us to properly highlight these examples in a robust way, keeping
our directionality and elision notations.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Reported-by: Aarushi Mehta <mehta.aaru20@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20190603214653.29369-3-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
2019-07-10 15:08:06 -04:00
Peter Maydell
6038f5fca5 docs/conf.py: Don't hard-code QEMU version
Don't hard-code the QEMU version number into conf.py. Instead
we either pass it to sphinx-build on the command line, or
(if doing a standalone Sphinx run in a readthedocs.org setup)
extract it from the VERSION file.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190305172139.32662-12-peter.maydell@linaro.org
Message-id: 20190228145624.24885-12-peter.maydell@linaro.org
2019-03-07 14:26:47 +00:00
Peter Maydell
f8cf7147f1 docs: Provide separate conf.py for each manual we want
By default Sphinx wants to build a single manual at once.
For QEMU, this doesn't suit us, because we want to have
separate manuals for "Developer's Guide", "User Manual",
and so on, and we don't want to ship the Developer's Guide
to end-users. However, we don't want to completely duplicate
conf.py for each manual, and we'd like to continue to
support "build all docs in one run" for third-party sites
like readthedocs.org.

Make the top-level conf.py support two usage forms:
 (1) as a common config file which is included by the conf.py
 for each of QEMU's manuals: in this case sphinx-build is run
 multiple times, once per subdirectory.
 (2) as a top level conf file which will result in building all
 the manuals into a single document: in this case sphinx-build is
 run once, on the top-level docs directory.

Provide per-manual conf.py files and top level pages for
our first two manuals:
 * QEMU Developer's Guide (docs/devel)
 * QEMU System Emulation Management and Interoperability Guide
   (docs/interop)

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-id: 20190305172139.32662-9-peter.maydell@linaro.org
Message-id: 20190228145624.24885-9-peter.maydell@linaro.org
2019-03-07 14:26:46 +00:00
Peter Maydell
e250e867dc docs/conf.py: Disable option warnings
sphinx-build complains about using :option: to mark up option
flags that it doesn't know about (because they were not defined
using the "option::" directive):
docs/pr-manager.rst:68: WARNING: unknown option: -d

Suppress these warnings. This way we get the semantic markup
of the option flag but no cross-referencing hyperlink.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190305172139.32662-8-peter.maydell@linaro.org
Message-id: 20190228145624.24885-8-peter.maydell@linaro.org
2019-03-07 14:26:46 +00:00
Peter Maydell
479fb8a511 docs/conf.py: Don't include rST sources in HTML build
Sphinx defaults to including all the rST source files
in the HTML build and making each HTML page link to the
source file. Disable that.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190305172139.32662-7-peter.maydell@linaro.org
Message-id: 20190228145624.24885-7-peter.maydell@linaro.org
2019-03-07 14:26:46 +00:00
Peter Maydell
4fad3864a8 docs/conf.py: Configure the 'alabaster' theme
Add the 'navigation' bar to the sidebar, which for some
reason is not enabled by default. Remove 'relations', which
is effectively disabled anyway and isn't useful for us.

This requires that we mandate having at least Sphinx 1.3,
where the theme was added.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Message-id: 20190305172139.32662-6-peter.maydell@linaro.org
Message-id: 20190228145624.24885-6-peter.maydell@linaro.org
2019-03-07 14:26:45 +00:00
Peter Maydell
07fd6563ae docs/conf.py: Disable unused _static directory
We don't yet have any custom static files, so disable this
config file setting to avoid a warning from sphinx about
not being able to find the directory.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190305172139.32662-5-peter.maydell@linaro.org
Message-id: 20190228145624.24885-5-peter.maydell@linaro.org
2019-03-07 14:26:45 +00:00
Peter Maydell
5329da6a4f docs: Commit initial files from sphinx-quickstart
Commit the initial Sphinx conf.py and skeleton index.rst as
generated with sphinx-quickstart. We'll update these to
add QEMU-specific tweaks in subsequent commits.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190305172139.32662-4-peter.maydell@linaro.org
Message-id: 20190228145624.24885-4-peter.maydell@linaro.org
2019-03-07 14:26:45 +00:00