Re: [edk2-devel] [PATCH] BaseTools: Add -ffat-lto-objects option in GCC5 tool chain

["Yao, Jiewen" <jiewen.yao@intel.com>]

Thanks Liming.
Acked-by: Jiewen Yao <Jiewen.yao@intel.com>

Just want to make sure, that this toolchain is covered in the existing CI build process, right?

Thank you
Yao Jiewen

> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of gaoliming
> Sent: Wednesday, May 19, 2021 10:27 AM
> To: devel@edk2.groups.io
> Cc: Sergei Dmitrouk <sergei@posteo.net>; Feng, Bob C <bob.c.feng@intel.com>;
> Ard Biesheuvel <ardb+tianocore@kernel.org>
> Subject: [edk2-devel] [PATCH] BaseTools: Add -ffat-lto-objects option in GCC5
> tool chain
> 
> BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3403
> 
> This option can trig the uninitialized warning when lto is enabled.
> The image size data is also collected for OVMF. There is no impact.
> 
> Cc: Sergei Dmitrouk <sergei@posteo.net>
> Cc: Bob Feng <bob.c.feng@intel.com>
> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
> Signed-off-by: Liming Gao <gaoliming@byosoft.com.cn>
> ---
>  BaseTools/Conf/tools_def.template | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/BaseTools/Conf/tools_def.template
> b/BaseTools/Conf/tools_def.template
> index 498696e583..aad5297385 100755
> --- a/BaseTools/Conf/tools_def.template
> +++ b/BaseTools/Conf/tools_def.template
> @@ -2315,10 +2315,10 @@ RELEASE_GCC49_AARCH64_DLINK_XIPFLAGS = -z
> common-page-size=0x20
>  *_GCC5_IA32_OBJCOPY_FLAGS        =
>  *_GCC5_IA32_NASM_FLAGS           = -f elf32
> 
> -  DEBUG_GCC5_IA32_CC_FLAGS       = DEF(GCC5_IA32_CC_FLAGS) -flto -Os
> +  DEBUG_GCC5_IA32_CC_FLAGS       = DEF(GCC5_IA32_CC_FLAGS) -ffat-lto-
> objects -flto -Os
>    DEBUG_GCC5_IA32_DLINK_FLAGS    = DEF(GCC5_IA32_X64_DLINK_FLAGS) -
> flto -Os -Wl,-m,elf_i386,--oformat=elf32-i386
> 
> -RELEASE_GCC5_IA32_CC_FLAGS       = DEF(GCC5_IA32_CC_FLAGS) -flto -Os -
> Wno-unused-but-set-variable -Wno-unused-const-variable
> +RELEASE_GCC5_IA32_CC_FLAGS       = DEF(GCC5_IA32_CC_FLAGS) -ffat-lto-
> objects -flto -Os -Wno-unused-but-set-variable -Wno-unused-const-variable
>  RELEASE_GCC5_IA32_DLINK_FLAGS    = DEF(GCC5_IA32_X64_DLINK_FLAGS) -
> flto -Os -Wl,-m,elf_i386,--oformat=elf32-i386
> 
>    NOOPT_GCC5_IA32_CC_FLAGS       = DEF(GCC5_IA32_CC_FLAGS) -O0
> @@ -2347,10 +2347,10 @@ RELEASE_GCC5_IA32_DLINK_FLAGS    =
> DEF(GCC5_IA32_X64_DLINK_FLAGS) -flto -Os -Wl,
>  *_GCC5_X64_OBJCOPY_FLAGS         =
>  *_GCC5_X64_NASM_FLAGS            = -f elf64
> 
> -  DEBUG_GCC5_X64_CC_FLAGS        = DEF(GCC5_X64_CC_FLAGS) -flto -
> DUSING_LTO -Os
> +  DEBUG_GCC5_X64_CC_FLAGS        = DEF(GCC5_X64_CC_FLAGS) -ffat-lto-
> objects -flto -DUSING_LTO -Os
>    DEBUG_GCC5_X64_DLINK_FLAGS     = DEF(GCC5_X64_DLINK_FLAGS) -flto -Os
> 
> -RELEASE_GCC5_X64_CC_FLAGS        = DEF(GCC5_X64_CC_FLAGS) -flto -
> DUSING_LTO -Os -Wno-unused-but-set-variable -Wno-unused-const-variable
> +RELEASE_GCC5_X64_CC_FLAGS        = DEF(GCC5_X64_CC_FLAGS) -ffat-lto-
> objects -flto -DUSING_LTO -Os -Wno-unused-but-set-variable -Wno-unused-
> const-variable
>  RELEASE_GCC5_X64_DLINK_FLAGS     = DEF(GCC5_X64_DLINK_FLAGS) -flto -Os
> 
>    NOOPT_GCC5_X64_CC_FLAGS        = DEF(GCC5_X64_CC_FLAGS) -O0
> @@ -2382,10 +2382,10 @@ RELEASE_GCC5_X64_DLINK_FLAGS     =
> DEF(GCC5_X64_DLINK_FLAGS) -flto -Os
>  *_GCC5_ARM_VFRPP_FLAGS           = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS)
> DEF(GCC_VFRPP_FLAGS)
>  *_GCC5_ARM_CC_XIPFLAGS           = DEF(GCC5_ARM_CC_XIPFLAGS)
> 
> -  DEBUG_GCC5_ARM_CC_FLAGS        = DEF(GCC5_ARM_CC_FLAGS) -flto -Wno-
> unused-but-set-variable -Wno-unused-const-variable
> +  DEBUG_GCC5_ARM_CC_FLAGS        = DEF(GCC5_ARM_CC_FLAGS) -ffat-lto-
> objects -flto -Wno-unused-but-set-variable -Wno-unused-const-variable
>    DEBUG_GCC5_ARM_DLINK_FLAGS     = DEF(GCC5_ARM_DLINK_FLAGS) -flto -
> Os -L$(WORKSPACE)/ArmPkg/Library/GccLto -llto-arm -Wl,-plugin-opt=-pass-
> through=-llto-arm
> 
> -RELEASE_GCC5_ARM_CC_FLAGS        = DEF(GCC5_ARM_CC_FLAGS) -flto -Wno-
> unused-but-set-variable -Wno-unused-const-variable
> +RELEASE_GCC5_ARM_CC_FLAGS        = DEF(GCC5_ARM_CC_FLAGS) -ffat-lto-
> objects -flto -Wno-unused-but-set-variable -Wno-unused-const-variable
>  RELEASE_GCC5_ARM_DLINK_FLAGS     = DEF(GCC5_ARM_DLINK_FLAGS) -flto -
> Os -L$(WORKSPACE)/ArmPkg/Library/GccLto -llto-arm -Wl,-plugin-opt=-pass-
> through=-llto-arm
> 
>    NOOPT_GCC5_ARM_CC_FLAGS        = DEF(GCC5_ARM_CC_FLAGS) -O0
> @@ -2416,11 +2416,11 @@ RELEASE_GCC5_ARM_DLINK_FLAGS     =
> DEF(GCC5_ARM_DLINK_FLAGS) -flto -Os -L$(WORKS
>  *_GCC5_AARCH64_VFRPP_FLAGS       = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS)
> DEF(GCC_VFRPP_FLAGS)
>  *_GCC5_AARCH64_CC_XIPFLAGS       = DEF(GCC5_AARCH64_CC_XIPFLAGS)
> 
> -  DEBUG_GCC5_AARCH64_CC_FLAGS    = DEF(GCC5_AARCH64_CC_FLAGS) -flto
> -Wno-unused-but-set-variable -Wno-unused-const-variable
> +  DEBUG_GCC5_AARCH64_CC_FLAGS    = DEF(GCC5_AARCH64_CC_FLAGS) -
> ffat-lto-objects -flto -Wno-unused-but-set-variable -Wno-unused-const-variable
>    DEBUG_GCC5_AARCH64_DLINK_FLAGS = DEF(GCC5_AARCH64_DLINK_FLAGS)
> -flto -Os -L$(WORKSPACE)/ArmPkg/Library/GccLto -llto-aarch64 -Wl,-plugin-
> opt=-pass-through=-llto-aarch64 -Wno-lto-type-mismatch
>    DEBUG_GCC5_AARCH64_DLINK_XIPFLAGS = -z common-page-size=0x20
> 
> -RELEASE_GCC5_AARCH64_CC_FLAGS    = DEF(GCC5_AARCH64_CC_FLAGS) -flto
> -Wno-unused-but-set-variable -Wno-unused-const-variable
> +RELEASE_GCC5_AARCH64_CC_FLAGS    = DEF(GCC5_AARCH64_CC_FLAGS) -
> ffat-lto-objects -flto -Wno-unused-but-set-variable -Wno-unused-const-variable
>  RELEASE_GCC5_AARCH64_DLINK_FLAGS = DEF(GCC5_AARCH64_DLINK_FLAGS)
> -flto -Os -L$(WORKSPACE)/ArmPkg/Library/GccLto -llto-aarch64 -Wl,-plugin-
> opt=-pass-through=-llto-aarch64 -Wno-lto-type-mismatch
>  RELEASE_GCC5_AARCH64_DLINK_XIPFLAGS = -z common-page-size=0x20
> 
> --
> 2.27.0.windows.1
> 
> 
> 
> 
> 
>