Re: [edk2-devel] [PATCH 1/1] BaseTools: Update CLANG{35,38}_WARNING_OVERRIDES to ignore unused vars

["Michael D Kinney" <michael.d.kinney@intel.com>]

Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>

Mike

> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Rebecca Cran
> Sent: Friday, February 4, 2022 11:51 AM
> To: devel@edk2.groups.io; Feng, Bob C <bob.c.feng@intel.com>; Gao, Liming <gaoliming@byosoft.com.cn>; Chen, Christine
> <yuwei.chen@intel.com>; Kinney, Michael D <michael.d.kinney@intel.com>; Andrew Fish <afish@apple.com>
> Cc: Rebecca Cran <quic_rcran@quicinc.com>
> Subject: [edk2-devel] [PATCH 1/1] BaseTools: Update CLANG{35,38}_WARNING_OVERRIDES to ignore unused vars
> 
> Building with the CLANG35 and CLANG38 toolset fails because of variables
> which are set but not otherwise used in the RELEASE build.
> 
> GCC added -Wno-unused-but-set-variable back in 2016, and later added
> -Wno-unused-const-variable. Add those to CLANG35_WARNING_OVERRIDES and
> CLANG38_WARNING_OVERRIDES.
> 
> Signed-off-by: Rebecca Cran <quic_rcran@quicinc.com>
> ---
>  BaseTools/Conf/tools_def.template | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/BaseTools/Conf/tools_def.template b/BaseTools/Conf/tools_def.template
> index 2e6b382ab623..e839e8602a0b 100755
> --- a/BaseTools/Conf/tools_def.template
> +++ b/BaseTools/Conf/tools_def.template
> @@ -2496,7 +2496,7 @@ RELEASE_GCC5_AARCH64_DLINK_XIPFLAGS = -z common-page-size=0x20
>  DEFINE CLANG35_ARM_TARGET        = -target arm-linux-gnueabi
>  DEFINE CLANG35_AARCH64_TARGET    = -target aarch64-linux-gnu
> 
> -DEFINE CLANG35_WARNING_OVERRIDES = -Wno-parentheses-equality -Wno-tautological-compare -Wno-tautological-constant-out-of-
> range-compare -Wno-empty-body -Wno-unknown-warning-option
> +DEFINE CLANG35_WARNING_OVERRIDES = -Wno-parentheses-equality -Wno-tautological-compare -Wno-tautological-constant-out-of-
> range-compare -Wno-empty-body -Wno-unknown-warning-option -Wno-unused-but-set-variable -Wno-unused-const-variable
>  DEFINE CLANG35_ARM_CC_FLAGS      = DEF(GCC_ARM_CC_FLAGS) DEF(CLANG35_ARM_TARGET) DEF(CLANG35_WARNING_OVERRIDES)
>  DEFINE CLANG35_AARCH64_CC_FLAGS  = DEF(GCC_AARCH64_CC_FLAGS) DEF(CLANG35_AARCH64_TARGET) -mcmodel=small
> DEF(CLANG35_WARNING_OVERRIDES)
> 
> @@ -2566,7 +2566,7 @@ DEFINE CLANG38_X64_PREFIX           = ENV(CLANG38_BIN)
>  DEFINE CLANG38_IA32_TARGET          = -target i686-pc-linux-gnu
>  DEFINE CLANG38_X64_TARGET           = -target x86_64-pc-linux-gnu
> 
> -DEFINE CLANG38_WARNING_OVERRIDES    = -Wno-parentheses-equality -Wno-tautological-compare -Wno-tautological-constant-out-of-
> range-compare -Wno-empty-body -Wno-unused-const-variable -Wno-varargs -Wno-unknown-warning-option
> +DEFINE CLANG38_WARNING_OVERRIDES    = -Wno-parentheses-equality -Wno-tautological-compare -Wno-tautological-constant-out-of-
> range-compare -Wno-empty-body -Wno-unused-const-variable -Wno-varargs -Wno-unknown-warning-option -Wno-unused-but-set-variable
> -Wno-unused-const-variable
>  DEFINE CLANG38_ALL_CC_FLAGS         = DEF(GCC48_ALL_CC_FLAGS) DEF(CLANG38_WARNING_OVERRIDES) -fno-stack-protector -mms-
> bitfields -Wno-address -Wno-shift-negative-value -Wno-unknown-pragmas -Wno-incompatible-library-redeclaration -fno-
> asynchronous-unwind-tables -mno-sse -mno-mmx -msoft-float -mno-implicit-float  -ftrap-
> function=undefined_behavior_has_been_optimized_away_by_clang -funsigned-char -fno-ms-extensions -Wno-null-dereference
> 
>  ###########################
> --
> 2.34.1
> 
> 
> 
> 
>