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Ensure drm headers build, are self-contained, have header guards, and have no kernel-doc warnings, when CONFIG_DRM_HEADER_TEST=y. The mechanism follows similar patters used in i915, xe, and usr/include. To cover include/drm, we need to recurse there using the top level Kbuild and the new include/Kbuild files. v4: check for CONFIG_WERROR in addition to CONFIG_DRM_WERROR v3: adapt to upstream build changes v2: make DRM_HEADER_TEST depend on DRM Suggested-by: Daniel Vetter <daniel@ffwll.ch> Cc: David Airlie <airlied@gmail.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <mripard@kernel.org> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Simona Vetter <simona.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/d8ad1c6d707f38a55987f616cb9650aef30b84e1.1737556766.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
19 lines
642 B
Makefile
19 lines
642 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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# Ensure drm headers are self-contained and pass kernel-doc
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hdrtest-files := \
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$(shell cd $(src) && find * -name '*.h' 2>/dev/null)
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always-$(CONFIG_DRM_HEADER_TEST) += \
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$(patsubst %.h,%.hdrtest, $(hdrtest-files))
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# Include the header twice to detect missing include guard.
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quiet_cmd_hdrtest = HDRTEST $(patsubst %.hdrtest,%.h,$@)
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cmd_hdrtest = \
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$(CC) $(c_flags) -fsyntax-only -x c /dev/null -include $< -include $<; \
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$(srctree)/scripts/kernel-doc -none $(if $(CONFIG_WERROR)$(CONFIG_DRM_WERROR),-Werror) $<; \
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touch $@
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$(obj)/%.hdrtest: $(src)/%.h FORCE
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$(call if_changed_dep,hdrtest)
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