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Commit c466d17e authored Apr 13, 2017 by Masahiro Yamada Committed by Greg Kroah-Hartman Nov 23, 2018

kbuild: drop -Wno-unknown-warning-option from clang options



commit a0ae981eba8f07dbc74bce38fd3a462b69a5bc8e upstream.

Since commit c3f0d0bc5b01 ("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>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent b53c7372

Makefile

+0 −1

Original line number	Diff line number	Diff line
		@@ -714,7 +714,6 @@ endif
		KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC)
		KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC)
		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

+0 −1

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)