docs/sphinx/kerneldoc.py: Honour --enable-werror

Currently, the kerneldoc Sphinx plugin doesn't honour the
--enable-werror configure option, so its warnings are never fatal.
This is because although we do pass sphinx-build the -W switch, the
warnings from kerneldoc are produced by the scripts/kernel-doc script
directly and don't go through Sphinx's "emit a warning" function.

When --enable-werror is in effect, pass sphinx-build an extra
argument -Dkerneldoc_werror=1.  The kerneldoc plugin can then use
this to determine whether it should be passing the kernel-doc script
-Werror.

We do this because there is no documented mechanism for
a Sphinx plugin to determine whether sphinx-build was
passed -W or not; if one is provided then we can switch to
that at a later date:
https://github.com/sphinx-doc/sphinx/issues/11239

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230314114431.1096972-1-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Peter Maydell 2023-03-14 11:44:31 +00:00 committed by Laurent Vivier
parent ad4052f104
commit 364206640c
2 changed files with 6 additions and 1 deletions

View File

@ -7,7 +7,7 @@ if sphinx_build.found()
SPHINX_ARGS = ['env', 'CONFDIR=' + qemu_confdir, sphinx_build, '-q']
# If we're making warnings fatal, apply this to Sphinx runs as well
if get_option('werror')
SPHINX_ARGS += [ '-W' ]
SPHINX_ARGS += [ '-W', '-Dkerneldoc_werror=1' ]
endif
# This is a bit awkward but works: create a trivial document and

View File

@ -74,6 +74,10 @@ class KernelDocDirective(Directive):
# Sphinx versions
cmd += ['-sphinx-version', sphinx.__version__]
# Pass through the warnings-as-errors flag
if env.config.kerneldoc_werror:
cmd += ['-Werror']
filename = env.config.kerneldoc_srctree + '/' + self.arguments[0]
export_file_patterns = []
@ -167,6 +171,7 @@ def setup(app):
app.add_config_value('kerneldoc_bin', None, 'env')
app.add_config_value('kerneldoc_srctree', None, 'env')
app.add_config_value('kerneldoc_verbosity', 1, 'env')
app.add_config_value('kerneldoc_werror', 0, 'env')
app.add_directive('kernel-doc', KernelDocDirective)