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diff --git a/BaseTools/Conf/tools_def.template b/BaseTools/Conf/tools_def.template
index 427ef1b..936f79d 100755
--- a/BaseTools/Conf/tools_def.template
+++ b/BaseTools/Conf/tools_def.template
@@ -4335,7 +4335,7 @@ DEBUG_*_*_OBJCOPY_ADDDEBUGFLAG     = --add-gnu-debuglink=$(DEBUG_DIR)/$(MODULE_N
 RELEASE_*_*_OBJCOPY_ADDDEBUGFLAG   =
 NOOPT_*_*_OBJCOPY_ADDDEBUGFLAG     = --add-gnu-debuglink=$(DEBUG_DIR)/$(MODULE_NAME).debug
 
-DEFINE GCC_ALL_CC_FLAGS            = -g -Os -fshort-wchar -fno-builtin -fno-strict-aliasing -Wall -Werror -Wno-array-bounds -include AutoGen.h -fno-common
+DEFINE GCC_ALL_CC_FLAGS            = -g -Os -fshort-wchar -fno-builtin -fno-strict-aliasing -Wall -Wno-array-bounds -include AutoGen.h -fno-common
 DEFINE GCC_IA32_CC_FLAGS           = DEF(GCC_ALL_CC_FLAGS) -m32 -malign-double -freorder-blocks -freorder-blocks-and-partition -O2 -mno-stack-arg-probe
 DEFINE GCC_X64_CC_FLAGS            = DEF(GCC_ALL_CC_FLAGS) -mno-red-zone -Wno-address -mno-stack-arg-probe
 DEFINE GCC_IPF_CC_FLAGS            = DEF(GCC_ALL_CC_FLAGS) -minline-int-divide-min-latency
@@ -4368,7 +4368,7 @@ DEFINE GCC_IPF_RC_FLAGS            = -I binary -O elf64-ia64-little   -B ia64
 DEFINE GCC_ARM_RC_FLAGS            = -I binary -O elf32-littlearm     -B arm     --rename-section .data=.hii
 DEFINE GCC_AARCH64_RC_FLAGS        = -I binary -O elf64-littleaarch64 -B aarch64 --rename-section .data=.hii
 
-DEFINE GCC44_ALL_CC_FLAGS            = -g -fshort-wchar -fno-builtin -fno-strict-aliasing -Wall -Werror -Wno-array-bounds -ffunction-sections -fdata-sections -include AutoGen.h -fno-common -DSTRING_ARRAY_NAME=$(BASE_NAME)Strings
+DEFINE GCC44_ALL_CC_FLAGS            = -g -fshort-wchar -fno-builtin -fno-strict-aliasing -Wall -Wno-array-bounds -ffunction-sections -fdata-sections -include AutoGen.h -fno-common -DSTRING_ARRAY_NAME=$(BASE_NAME)Strings
 DEFINE GCC44_IA32_CC_FLAGS           = DEF(GCC44_ALL_CC_FLAGS) -m32 -march=i586 -malign-double -fno-stack-protector -D EFI32 -fno-asynchronous-unwind-tables
 DEFINE GCC44_X64_CC_FLAGS            = DEF(GCC44_ALL_CC_FLAGS) -m64 -fno-stack-protector "-DEFIAPI=__attribute__((ms_abi))" -maccumulate-outgoing-args -mno-red-zone -Wno-address -mcmodel=small -fpie -fno-asynchronous-unwind-tables
 DEFINE GCC44_IA32_X64_DLINK_COMMON   = -nostdlib -Wl,-n,-q,--gc-sections -z common-page-size=0x20
@@ -5864,7 +5864,7 @@ NOOPT_CLANG38_X64_DLINK2_FLAGS     = DEF(GCC5_X64_DLINK2_FLAGS) -O0
 *_ELFGCC_X64_VFRPP_PATH            = DEF(ELFGCC_BIN)/gcc
 *_ELFGCC_X64_RC_PATH               = DEF(ELFGCC_BIN)/objcopy
 
-*_ELFGCC_X64_CC_FLAGS              = -Os -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-address -Wno-array-bounds -include AutoGen.h -D_EFI_P64
+*_ELFGCC_X64_CC_FLAGS              = -Os -fshort-wchar -fno-strict-aliasing -Wall -Wno-address -Wno-array-bounds -include AutoGen.h -D_EFI_P64
 *_ELFGCC_X64_DLINK_FLAGS           = -nostdlib --shared --entry $(IMAGE_ENTRY_POINT) -u $(IMAGE_ENTRY_POINT) -Map $(DEST_DIR_DEBUG)/$(BASE_NAME).map
 *_ELFGCC_X64_SLINK_FLAGS           =
 *_ELFGCC_X64_ASM_FLAGS             = -c -x assembler -imacros $(DEST_DIR_DEBUG)/AutoGen.h
@@ -5887,7 +5887,7 @@ NOOPT_CLANG38_X64_DLINK2_FLAGS     = DEF(GCC5_X64_DLINK2_FLAGS) -O0
 *_ELFGCC_IPF_VFRPP_PATH           = DEF(ELFGCC_BIN)/gcc
 *_ELFGCC_IPF_RC_PATH              = DEF(ELFGCC_BIN)/objcopy
 
-*_ELFGCC_IPF_CC_FLAGS             = -Os -fshort-wchar -Wall -Werror -include AutoGen.h -D_EFI_P64
+*_ELFGCC_IPF_CC_FLAGS             = -Os -fshort-wchar -Wall -include AutoGen.h -D_EFI_P64
 *_ELFGCC_IPF_DLINK_FLAGS          = -nostdlib --shared --entry $(IMAGE_ENTRY_POINT) -u $(IMAGE_ENTRY_POINT) -Map $(DEST_DIR_DEBUG)/$(BASE_NAME).map
 *_ELFGCC_IPF_SLINK_FLAGS          =
 *_ELFGCC_IPF_ASM_FLAGS            = -c -x assembler -imacros $(DEST_DIR_DEBUG)/AutoGen.h
@@ -7296,10 +7296,10 @@ RELEASE_XCODE32_IA32_ASM_FLAGS  = -arch i386
 *_XCODE32_IA32_NASM_FLAGS       = -f macho32
 *_XCODE32_IA32_PP_FLAGS         = -arch i386 -E -x assembler-with-cpp -include $(DEST_DIR_DEBUG)/AutoGen.h
 *_XCODE32_IA32_VFRPP_FLAGS      = -arch i386 -x c -E -P -DVFRCOMPILE --include $(DEST_DIR_DEBUG)/$(MODULE_NAME)StrDefs.h
-  DEBUG_XCODE32_IA32_CC_FLAGS   = -arch i386 -save-temps -g -O0 -combine -mms-bitfields  -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-missing-braces  -c -include AutoGen.h -mdynamic-no-pic -fno-stack-protector
-RELEASE_XCODE32_IA32_CC_FLAGS   = -arch i386 -Oz -combine -mms-bitfields  -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-missing-braces -fomit-frame-pointer -c -include AutoGen.h -mdynamic-no-pic -fno-stack-protector
+  DEBUG_XCODE32_IA32_CC_FLAGS   = -arch i386 -save-temps -g -O0 -combine -mms-bitfields  -fshort-wchar -fno-strict-aliasing -Wall -Wno-missing-braces  -c -include AutoGen.h -mdynamic-no-pic -fno-stack-protector
+RELEASE_XCODE32_IA32_CC_FLAGS   = -arch i386 -Oz -combine -mms-bitfields  -fshort-wchar -fno-strict-aliasing -Wall -Wno-missing-braces -fomit-frame-pointer -c -include AutoGen.h -mdynamic-no-pic -fno-stack-protector
 
-*_XCODE32_IA32_ASLCC_FLAGS      = -arch i386 -x c -save-temps -g -O0 -mms-bitfields -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-missing-braces -c -include AutoGen.h -mdynamic-no-pic
+*_XCODE32_IA32_ASLCC_FLAGS      = -arch i386 -x c -save-temps -g -O0 -mms-bitfields -fshort-wchar -fno-strict-aliasing -Wall -Wno-missing-braces -c -include AutoGen.h -mdynamic-no-pic
 *_XCODE32_IA32_ASLDLINK_FLAGS   = -arch i386 -e _main -preload -segalign 0x20  -pie -seg1addr 0x220 -read_only_relocs suppress -map $(DEST_DIR_DEBUG)/$(BASE_NAME).map
 *_XCODE32_IA32_ASLPP_FLAGS      = -arch i386 -x c -E -include AutoGen.h
 *_XCODE32_IA32_ASL_FLAGS        =
@@ -7328,8 +7328,8 @@ RELEASE_XCODE32_X64_ASM_FLAGS  = -arch x86_64
 *_XCODE32_X64_PP_FLAGS         = -arch x86_64 -E -x assembler-with-cpp -include $(DEST_DIR_DEBUG)/AutoGen.h
 *_XCODE32_X64_VFRPP_FLAGS      = -arch x86_64 -x c -E -P -DVFRCOMPILE --include $(DEST_DIR_DEBUG)/$(MODULE_NAME)StrDefs.h
 
-  DEBUG_XCODE32_X64_CC_FLAGS   = -arch x86_64 -save-temps -g -O0 -mms-bitfields -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-missing-braces -Wno-address  -fomit-frame-pointer -static  -c -include AutoGen.h -fno-stack-protector
-RELEASE_XCODE32_X64_CC_FLAGS   = -arch x86_64 -Oz -mms-bitfields -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-missing-braces -Wno-address  -fomit-frame-pointer -static  -c -include AutoGen.h -fno-stack-protector
+  DEBUG_XCODE32_X64_CC_FLAGS   = -arch x86_64 -save-temps -g -O0 -mms-bitfields -fshort-wchar -fno-strict-aliasing -Wall -Wno-missing-braces -Wno-address  -fomit-frame-pointer -static  -c -include AutoGen.h -fno-stack-protector
+RELEASE_XCODE32_X64_CC_FLAGS   = -arch x86_64 -Oz -mms-bitfields -fshort-wchar -fno-strict-aliasing -Wall -Wno-missing-braces -Wno-address  -fomit-frame-pointer -static  -c -include AutoGen.h -fno-stack-protector
 
 ##################
 # ARM definitions - (Assumes iPhone SDK installed on Snow Leopard)
@@ -7357,8 +7357,8 @@ RELEASE_XCODE32_ARM_ASM_FLAGS  = $(ARCHASM_FLAGS)
 *_XCODE32_ARM_PP_FLAGS         = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) -E -x assembler-with-cpp -include $(DEST_DIR_DEBUG)/AutoGen.h
 *_XCODE32_ARM_VFRPP_FLAGS      = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) -x c -E -P -DVFRCOMPILE --include $(DEST_DIR_DEBUG)/$(MODULE_NAME)StrDefs.h
 
-  DEBUG_XCODE32_ARM_CC_FLAGS   = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) -mthumb-interwork -g -Oz -mabi=aapcs -mapcs -fno-short-enums  -save-temps -combine -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-missing-braces -fomit-frame-pointer -c -include AutoGen.h
-RELEASE_XCODE32_ARM_CC_FLAGS   = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) -mthumb-interwork -Oz    -mabi=aapcs -mapcs -fno-short-enums  -save-temps -combine -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-missing-braces -fomit-frame-pointer -c -include AutoGen.h
+  DEBUG_XCODE32_ARM_CC_FLAGS   = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) -mthumb-interwork -g -Oz -mabi=aapcs -mapcs -fno-short-enums  -save-temps -combine -fshort-wchar -fno-strict-aliasing -Wall -Wno-missing-braces -fomit-frame-pointer -c -include AutoGen.h
+RELEASE_XCODE32_ARM_CC_FLAGS   = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) -mthumb-interwork -Oz    -mabi=aapcs -mapcs -fno-short-enums  -save-temps -combine -fshort-wchar -fno-strict-aliasing -Wall -Wno-missing-braces -fomit-frame-pointer -c -include AutoGen.h
 
 
 ####################################################################################
@@ -7403,8 +7403,8 @@ RELEASE_XCLANG_IA32_DLINK_FLAGS      = -arch i386 -u _$(IMAGE_ENTRY_POINT) -e _$
 RELEASE_XCLANG_IA32_ASM_FLAGS  = -arch i386 
 *_XCLANG_IA32_NASM_FLAGS       = -f macho32
 
-  DEBUG_XCLANG_IA32_CC_FLAGS   = -arch i386 -c -g -O0  -Wall -Werror -include AutoGen.h -fno-stack-protector -fno-builtin -fshort-wchar -mdynamic-no-pic -mno-sse -mno-mmx -Wno-empty-body -Wno-pointer-sign -Wno-unused-function -Wno-unused-value -Wno-missing-braces -Wno-tautological-compare -Wreturn-type -Wno-unused-variable  -fasm-blocks  -mms-bitfields -msoft-float -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang
-RELEASE_XCLANG_IA32_CC_FLAGS   = -arch i386 -c    -Os  -Wall -Werror -include AutoGen.h -fno-stack-protector -fno-builtin -fshort-wchar -mdynamic-no-pic -mno-sse -mno-mmx -Wno-empty-body -Wno-pointer-sign -Wno-unused-function -Wno-unused-value -Wno-missing-braces -Wno-tautological-compare -Wreturn-type -Wno-unused-variable  -fasm-blocks  -mms-bitfields -msoft-float -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang
+  DEBUG_XCLANG_IA32_CC_FLAGS   = -arch i386 -c -g -O0  -Wall -include AutoGen.h -fno-stack-protector -fno-builtin -fshort-wchar -mdynamic-no-pic -mno-sse -mno-mmx -Wno-empty-body -Wno-pointer-sign -Wno-unused-function -Wno-unused-value -Wno-missing-braces -Wno-tautological-compare -Wreturn-type -Wno-unused-variable  -fasm-blocks  -mms-bitfields -msoft-float -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang
+RELEASE_XCLANG_IA32_CC_FLAGS   = -arch i386 -c    -Os  -Wall -include AutoGen.h -fno-stack-protector -fno-builtin -fshort-wchar -mdynamic-no-pic -mno-sse -mno-mmx -Wno-empty-body -Wno-pointer-sign -Wno-unused-function -Wno-unused-value -Wno-missing-braces -Wno-tautological-compare -Wreturn-type -Wno-unused-variable  -fasm-blocks  -mms-bitfields -msoft-float -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang
 
 
 ##################
@@ -7420,9 +7420,9 @@ RELEASE_XCLANG_X64_ASM_FLAGS  = -arch x86_64
 *_XCLANG_*_VFRPP_FLAGS      = -x c -E -P -DVFRCOMPILE -include $(DEST_DIR_DEBUG)/$(MODULE_NAME)StrDefs.h 
 
 
-  DEBUG_XCLANG_X64_CC_FLAGS   = -ccc-host-triple x86_64-pc-win32-macho -c -g -O0  -Wall -Werror -include AutoGen.h -fno-stack-protector -fno-builtin -fshort-wchar -mdynamic-no-pic -Wno-empty-body -Wno-pointer-sign -Wno-unused-function -Wno-unused-value -Wno-missing-braces -Wno-tautological-compare -Wreturn-type -Wno-unused-variable -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang
-RELEASE_XCLANG_X64_CC_FLAGS   = -ccc-host-triple x86_64-pc-win32-macho -c    -Os  -Wall -Werror -include AutoGen.h -fno-stack-protector -fno-builtin -fshort-wchar -mdynamic-no-pic -Wno-empty-body -Wno-pointer-sign -Wno-unused-function -Wno-unused-value -Wno-missing-braces -Wno-tautological-compare -Wreturn-type -Wno-unused-variable -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang
-*_XCLANG_*_ASLCC_FLAGS      = -x c -save-temps -g -O0 -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-missing-braces -c -include AutoGen.h -mdynamic-no-pic
+  DEBUG_XCLANG_X64_CC_FLAGS   = -ccc-host-triple x86_64-pc-win32-macho -c -g -O0  -Wall -include AutoGen.h -fno-stack-protector -fno-builtin -fshort-wchar -mdynamic-no-pic -Wno-empty-body -Wno-pointer-sign -Wno-unused-function -Wno-unused-value -Wno-missing-braces -Wno-tautological-compare -Wreturn-type -Wno-unused-variable -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang
+RELEASE_XCLANG_X64_CC_FLAGS   = -ccc-host-triple x86_64-pc-win32-macho -c    -Os  -Wall -include AutoGen.h -fno-stack-protector -fno-builtin -fshort-wchar -mdynamic-no-pic -Wno-empty-body -Wno-pointer-sign -Wno-unused-function -Wno-unused-value -Wno-missing-braces -Wno-tautological-compare -Wreturn-type -Wno-unused-variable -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang
+*_XCLANG_*_ASLCC_FLAGS      = -x c -save-temps -g -O0 -fshort-wchar -fno-strict-aliasing -Wall -Wno-missing-braces -c -include AutoGen.h -mdynamic-no-pic
 *_XCLANG_*_ASLDLINK_FLAGS   = -e _main -preload -segalign 0x20  -pie -seg1addr 0x240 -read_only_relocs suppress -map $(DEST_DIR_DEBUG)/$(BASE_NAME).map
 *_XCLANG_*_ASLPP_FLAGS      = -x c -E -include AutoGen.h
 *_XCLANG_*_ASL_FLAGS        =
@@ -7472,9 +7472,9 @@ RELEASE_XCODE5_IA32_ASM_FLAGS  = -arch i386
       *_XCODE5_IA32_NASM_FLAGS = -f macho32
 
 
-  DEBUG_XCODE5_IA32_CC_FLAGS   = -arch i386 -c -g -Os       -Wall -Werror -include AutoGen.h -funsigned-char -fno-stack-protector -fno-builtin -fshort-wchar -fasm-blocks -mdynamic-no-pic -mno-implicit-float -mms-bitfields -msoft-float -Wno-unused-parameter -Wno-missing-braces -Wno-missing-field-initializers -Wno-tautological-compare -Wno-sign-compare -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang $(PLATFORM_FLAGS)
-RELEASE_XCODE5_IA32_CC_FLAGS   = -arch i386 -c    -Os       -Wall -Werror -include AutoGen.h -funsigned-char -fno-stack-protector -fno-builtin -fshort-wchar -fasm-blocks -mdynamic-no-pic -mno-implicit-float -mms-bitfields -msoft-float -Wno-unused-parameter -Wno-missing-braces -Wno-missing-field-initializers -Wno-tautological-compare -Wno-sign-compare -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang $(PLATFORM_FLAGS)
-  NOOPT_XCODE5_IA32_CC_FLAGS   = -arch i386 -c -g -O0       -Wall -Werror -include AutoGen.h -funsigned-char -fno-stack-protector -fno-builtin -fshort-wchar -fasm-blocks -mdynamic-no-pic -mno-implicit-float -mms-bitfields -msoft-float -Wno-unused-parameter -Wno-missing-braces -Wno-missing-field-initializers -Wno-tautological-compare -Wno-sign-compare -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang $(PLATFORM_FLAGS)
+  DEBUG_XCODE5_IA32_CC_FLAGS   = -arch i386 -c -g -Os       -Wall -include AutoGen.h -funsigned-char -fno-stack-protector -fno-builtin -fshort-wchar -fasm-blocks -mdynamic-no-pic -mno-implicit-float -mms-bitfields -msoft-float -Wno-unused-parameter -Wno-missing-braces -Wno-missing-field-initializers -Wno-tautological-compare -Wno-sign-compare -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang $(PLATFORM_FLAGS)
+RELEASE_XCODE5_IA32_CC_FLAGS   = -arch i386 -c    -Os       -Wall -include AutoGen.h -funsigned-char -fno-stack-protector -fno-builtin -fshort-wchar -fasm-blocks -mdynamic-no-pic -mno-implicit-float -mms-bitfields -msoft-float -Wno-unused-parameter -Wno-missing-braces -Wno-missing-field-initializers -Wno-tautological-compare -Wno-sign-compare -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang $(PLATFORM_FLAGS)
+  NOOPT_XCODE5_IA32_CC_FLAGS   = -arch i386 -c -g -O0       -Wall -include AutoGen.h -funsigned-char -fno-stack-protector -fno-builtin -fshort-wchar -fasm-blocks -mdynamic-no-pic -mno-implicit-float -mms-bitfields -msoft-float -Wno-unused-parameter -Wno-missing-braces -Wno-missing-field-initializers -Wno-tautological-compare -Wno-sign-compare -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang $(PLATFORM_FLAGS)
 
 
 
@@ -7494,11 +7494,11 @@ RELEASE_XCODE5_X64_ASM_FLAGS  = -arch x86_64
 *_XCODE5_*_VFRPP_FLAGS      = -x c -E -P -DVFRCOMPILE -include $(DEST_DIR_DEBUG)/$(MODULE_NAME)StrDefs.h 
 
 
-  DEBUG_XCODE5_X64_CC_FLAGS   = -target x86_64-pc-win32-macho -c -g -Os       -Wall -Werror -Wextra -include AutoGen.h -funsigned-char -fno-ms-extensions -fno-stack-protector -fno-builtin -fshort-wchar -mno-implicit-float -mms-bitfields -Wno-unused-parameter -Wno-missing-braces -Wno-missing-field-initializers -Wno-tautological-compare -Wno-sign-compare -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang $(PLATFORM_FLAGS)
-  NOOPT_XCODE5_X64_CC_FLAGS   = -target x86_64-pc-win32-macho -c -g -O0       -Wall -Werror -Wextra -include AutoGen.h -funsigned-char -fno-ms-extensions -fno-stack-protector -fno-builtin -fshort-wchar -mno-implicit-float -mms-bitfields -Wno-unused-parameter -Wno-missing-braces -Wno-missing-field-initializers -Wno-tautological-compare -Wno-sign-compare -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang $(PLATFORM_FLAGS)
-RELEASE_XCODE5_X64_CC_FLAGS   = -target x86_64-pc-win32-macho -c    -Os       -Wall -Werror -Wextra -include AutoGen.h -funsigned-char -fno-ms-extensions -fno-stack-protector -fno-builtin -fshort-wchar -mno-implicit-float -mms-bitfields -Wno-unused-parameter -Wno-missing-braces -Wno-missing-field-initializers -Wno-tautological-compare -Wno-sign-compare -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang $(PLATFORM_FLAGS)
+  DEBUG_XCODE5_X64_CC_FLAGS   = -target x86_64-pc-win32-macho -c -g -Os       -Wall -Wextra -include AutoGen.h -funsigned-char -fno-ms-extensions -fno-stack-protector -fno-builtin -fshort-wchar -mno-implicit-float -mms-bitfields -Wno-unused-parameter -Wno-missing-braces -Wno-missing-field-initializers -Wno-tautological-compare -Wno-sign-compare -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang $(PLATFORM_FLAGS)
+  NOOPT_XCODE5_X64_CC_FLAGS   = -target x86_64-pc-win32-macho -c -g -O0       -Wall -Wextra -include AutoGen.h -funsigned-char -fno-ms-extensions -fno-stack-protector -fno-builtin -fshort-wchar -mno-implicit-float -mms-bitfields -Wno-unused-parameter -Wno-missing-braces -Wno-missing-field-initializers -Wno-tautological-compare -Wno-sign-compare -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang $(PLATFORM_FLAGS)
+RELEASE_XCODE5_X64_CC_FLAGS   = -target x86_64-pc-win32-macho -c    -Os       -Wall -Wextra -include AutoGen.h -funsigned-char -fno-ms-extensions -fno-stack-protector -fno-builtin -fshort-wchar -mno-implicit-float -mms-bitfields -Wno-unused-parameter -Wno-missing-braces -Wno-missing-field-initializers -Wno-tautological-compare -Wno-sign-compare -ftrap-function=undefined_behavior_has_been_optimized_away_by_clang $(PLATFORM_FLAGS)
 
-*_XCODE5_*_ASLCC_FLAGS      = -x c -save-temps -g -O0 -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-missing-braces -c -include AutoGen.h 
+*_XCODE5_*_ASLCC_FLAGS      = -x c -save-temps -g -O0 -fshort-wchar -fno-strict-aliasing -Wall -Wno-missing-braces -c -include AutoGen.h 
 *_XCODE5_*_ASLDLINK_FLAGS   = -e _ReferenceAcpiTable -preload -segalign 0x20  -pie -seg1addr 0x240 -read_only_relocs suppress -map $(DEST_DIR_DEBUG)/$(BASE_NAME).map
 *_XCODE5_*_ASLPP_FLAGS      = -x c -E -include AutoGen.h
 *_XCODE5_*_ASL_FLAGS        =
diff --git a/BaseTools/Source/C/Makefiles/header.makefile b/BaseTools/Source/C/Makefiles/header.makefile
index 063982b..0316f56 100644
--- a/BaseTools/Source/C/Makefiles/header.makefile
+++ b/BaseTools/Source/C/Makefiles/header.makefile
@@ -47,9 +47,9 @@ INCLUDE = $(TOOL_INCLUDE) -I $(MAKEROOT) -I $(MAKEROOT)/Include/Common -I $(MAKE
 BUILD_CPPFLAGS = $(INCLUDE) -O2
 ifeq ($(DARWIN),Darwin)
 # assume clang or clang compatible flags on OS X
-BUILD_CFLAGS = -MD -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-deprecated-declarations -Wno-self-assign -Wno-unused-result -nostdlib -c -g
+BUILD_CFLAGS = -MD -fshort-wchar -fno-strict-aliasing -Wall -Wno-deprecated-declarations -Wno-self-assign -Wno-unused-result -nostdlib -c -g
 else
-BUILD_CFLAGS = -MD -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-deprecated-declarations -Wno-unused-result -nostdlib -c -g
+BUILD_CFLAGS = -MD -fshort-wchar -fno-strict-aliasing -Wall -Wno-deprecated-declarations -Wno-unused-result -nostdlib -c -g
 endif
 BUILD_LFLAGS =
 BUILD_CXXFLAGS = -Wno-unused-result