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.mayd...@linaro.org> --- NB: we need to land the fix for the current outstanding warning before this one can go in... https://lore.kernel.org/qemu-devel/20230310103123.2118519-11-alex.ben...@linaro.org/ --- docs/meson.build | 2 +- docs/sphinx/kerneldoc.py | 5 +++++ 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/docs/meson.build b/docs/meson.build index bb72c10ea8c..f220800e3e5 100644 --- a/docs/meson.build +++ b/docs/meson.build @@ -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 diff --git a/docs/sphinx/kerneldoc.py b/docs/sphinx/kerneldoc.py index bf442150165..72c403a7379 100644 --- a/docs/sphinx/kerneldoc.py +++ b/docs/sphinx/kerneldoc.py @@ -74,6 +74,10 @@ def run(self): # 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) -- 2.34.1