From: Peter Maydell <peter.maydell@linaro.org>
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>
---
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 bb72c10ea8c5..f220800e3e59 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 bf442150165f..72c403a73798 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)
--
2.39.2