We enable a lot more compiler warnings than the kernel defaults. A lot of them are comparable with the W=1 warnings (and warning disables!) in scripts/Makefile.extrawarn. Copy-paste them with s/KBUILD_CFLAGS/subdir-ccflags-y/ to make it easier to compare. Some of them overlap with the -Wall we also add, but it doesn't really matter. Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx> --- drivers/gpu/drm/i915/Makefile | 25 ++++++++++++++++++++----- 1 file changed, 20 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index 789dce9e2608..690308dc7047 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -12,15 +12,30 @@ # Note the danger in using -Wall -Wextra is that when CI updates gcc we # will most likely get a sudden build breakage... Hopefully we will fix # new warnings before CI updates! -subdir-ccflags-y := -Wall -Wextra -subdir-ccflags-y += -Wno-format-security -subdir-ccflags-y += -Wno-unused-parameter -subdir-ccflags-y += -Wno-type-limits +subdir-ccflags-y := -Wall + +# begin copy-paste W=1 warnings from scripts/Makefile.extrawarn +subdir-ccflags-y += -Wextra -Wunused -Wno-unused-parameter +subdir-ccflags-y += -Wmissing-declarations +subdir-ccflags-y += -Wmissing-format-attribute +subdir-ccflags-y += -Wmissing-prototypes +subdir-ccflags-y += -Wold-style-definition +subdir-ccflags-y += -Wmissing-include-dirs +subdir-ccflags-y += $(call cc-option, -Wunused-but-set-variable) +subdir-ccflags-y += $(call cc-option, -Wunused-const-variable) +subdir-ccflags-y += $(call cc-option, -Wpacked-not-aligned) +subdir-ccflags-y += $(call cc-option, -Wstringop-truncation) +# The following turn off the warnings enabled by -Wextra subdir-ccflags-y += -Wno-missing-field-initializers subdir-ccflags-y += -Wno-sign-compare +subdir-ccflags-y += -Wno-type-limits subdir-ccflags-y += -Wno-shift-negative-value -subdir-ccflags-y += $(call cc-option, -Wunused-but-set-variable) +# end copy-paste + +# The following turn off the warnings enabled by -Wall +subdir-ccflags-y += -Wno-format-security subdir-ccflags-y += $(call cc-disable-warning, frame-address) + subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror subdir-ccflags-y += -I$(srctree)/$(src) -- 2.39.2
