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.
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| @@ -64,7 +64,6 @@ ifeq ($(cc-name),clang) · 63 unmodified lines | ||
| 64 | 64 | KBUILD_CFLAGS += $(call cc-disable-warning, initializer-overrides) |
| 65 | 65 | KBUILD_CFLAGS += $(call cc-disable-warning, unused-value) |
| 66 | 66 | KBUILD_CFLAGS += $(call cc-disable-warning, format) |
| 67 | −KBUILD_CFLAGS += $(call cc-disable-warning, unknown-warning-option) | |
| 68 | 67 | KBUILD_CFLAGS += $(call cc-disable-warning, sign-compare) |
| 69 | 68 | KBUILD_CFLAGS += $(call cc-disable-warning, format-zero-length) |
| 70 | 69 | KBUILD_CFLAGS += $(call cc-disable-warning, uninitialized) |