kbuild: drop -Wno-unknown-warning-option from clang options (a0ae981e) · Commits · 戴 / test

Since commit ("kbuild, LLVMLinux: Add -Werror to cc-option to support clang"), cc-option and friends work nicely for clang. However, -Wno-unknown-warning-option makes clang happy with any unknown warning options even if -Werror is specified. Once -Wno-unknown-warning-option is added, any succeeding call of cc-disable-warning is evaluated positive, then unknown warning options are accepted. This should be dropped. Signed-off-by:

Masahiro Yamada <yamada.masahiro@socionext.com>

Makefile

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Original line number	Diff line number	Diff line
		@@ -689,7 +689,6 @@ KBUILD_CFLAGS += $(stackp-flag)

		ifeq ($(cc-name),clang)
		KBUILD_CPPFLAGS += $(call cc-option,-Qunused-arguments,)
		KBUILD_CPPFLAGS += $(call cc-option,-Wno-unknown-warning-option,)
		KBUILD_CFLAGS += $(call cc-disable-warning, unused-variable)
		KBUILD_CFLAGS += $(call cc-disable-warning, format-invalid-specifier)
		KBUILD_CFLAGS += $(call cc-disable-warning, gnu)

scripts/Makefile.extrawarn

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Original line number	Diff line number	Diff line
		@@ -64,7 +64,6 @@ ifeq ($(cc-name),clang)
		KBUILD_CFLAGS += $(call cc-disable-warning, initializer-overrides)
		KBUILD_CFLAGS += $(call cc-disable-warning, unused-value)
		KBUILD_CFLAGS += $(call cc-disable-warning, format)
		KBUILD_CFLAGS += $(call cc-disable-warning, unknown-warning-option)
		KBUILD_CFLAGS += $(call cc-disable-warning, sign-compare)
		KBUILD_CFLAGS += $(call cc-disable-warning, format-zero-length)
		KBUILD_CFLAGS += $(call cc-disable-warning, uninitialized)

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