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drm/amdgpu: Wrap -Wunused-but-set-variable in cc-option
-Wunused-but-set-variable was only supported in clang starting with
13.0.0, so earlier versions will emit a warning, which is turned into a
hard error for the kernel to mirror GCC:
error: unknown warning option '-Wunused-but-set-variable'; did you mean '-Wunused-const-variable'? [-Werror,-Wunknown-warning-option]
The minimum supported version of clang for building the kernel is
11.0.0, so match the rest of the kernel and wrap
-Wunused-but-set-variable in a cc-option call, so that it is only used
when supported by the compiler.
Closes: https://github.com/ClangBuiltLinux/linux/issues/1869
Fixes: 1b320ad3f5
("drm/amd/amdgpu: introduce DRM_AMDGPU_WERROR")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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1 changed files with 1 additions and 1 deletions
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@ -40,7 +40,7 @@ ccflags-y := -I$(FULL_AMD_PATH)/include/asic_reg \
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-I$(FULL_AMD_PATH)/amdkfd
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-I$(FULL_AMD_PATH)/amdkfd
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subdir-ccflags-y := -Wextra
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subdir-ccflags-y := -Wextra
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subdir-ccflags-y += -Wunused-but-set-variable
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subdir-ccflags-y += $(call cc-option, -Wunused-but-set-variable)
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subdir-ccflags-y += -Wno-unused-parameter
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subdir-ccflags-y += -Wno-unused-parameter
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subdir-ccflags-y += -Wno-type-limits
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subdir-ccflags-y += -Wno-type-limits
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subdir-ccflags-y += -Wno-sign-compare
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subdir-ccflags-y += -Wno-sign-compare
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