Reviewed-by: Liming Gao <liming....@intel.com>

-----Original Message-----
From: Leif Lindholm [mailto:leif.lindh...@linaro.org] 
Sent: Thursday, March 17, 2016 9:23 PM
To: edk2-devel@lists.01.org
Cc: Zhu, Yonghong <yonghong....@intel.com>; Gao, Liming <liming....@intel.com>; 
Ard Biesheuvel <ard.biesheu...@linaro.org>
Subject: [PATCH] BaseTools: use unsigned chars on ARM architectures

By default, the ARM architectures have unsigned chars, whereas the other
architectures supported by EDK2 by default have signed chars.
However, EDK2 uses -funsigned-chars on those architectures to change the
default behaviour.

Unfortunately, the ARM architectures explicitly break their default
behaviour by specifying -fsigned-chars (I presume in a pre-emptive
attempt at avoiding incompatibility).

Since this situation is already confusing enough, switch the ARM
architectures to also specify -funsigned-chars explicitly rather than
just dropping the current parameter.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Leif Lindholm <leif.lindh...@linaro.org>
---
 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 b1577af..eedf80f 100644
--- a/BaseTools/Conf/tools_def.template
+++ b/BaseTools/Conf/tools_def.template
@@ -4322,8 +4322,8 @@ DEFINE GCC_ALL_CC_FLAGS            = -g -Os -fshort-wchar 
-fno-strict-aliasing -
 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
-DEFINE GCC_ARM_CC_FLAGS            = DEF(GCC_ALL_CC_FLAGS) -mlittle-endian 
-mabi=aapcs -fno-short-enums -save-temps -fsigned-char -ffunction-sections 
-fdata-sections -fomit-frame-pointer -Wno-address -mthumb -mfloat-abi=soft
-DEFINE GCC_AARCH64_CC_FLAGS        = DEF(GCC_ALL_CC_FLAGS) -mlittle-endian 
-fno-short-enums -save-temps -fverbose-asm -fsigned-char  -ffunction-sections 
-fdata-sections -fomit-frame-pointer -fno-builtin -Wno-address 
-fno-asynchronous-unwind-tables
+DEFINE GCC_ARM_CC_FLAGS            = DEF(GCC_ALL_CC_FLAGS) -mlittle-endian 
-mabi=aapcs -fno-short-enums -save-temps -funsigned-char -ffunction-sections 
-fdata-sections -fomit-frame-pointer -Wno-address -mthumb -mfloat-abi=soft
+DEFINE GCC_AARCH64_CC_FLAGS        = DEF(GCC_ALL_CC_FLAGS) -mlittle-endian 
-fno-short-enums -save-temps -fverbose-asm -funsigned-char  -ffunction-sections 
-fdata-sections -fomit-frame-pointer -fno-builtin -Wno-address 
-fno-asynchronous-unwind-tables
 DEFINE GCC_AARCH64_CC_XIPFLAGS     = -mstrict-align
 DEFINE GCC_DLINK_FLAGS_COMMON      = -nostdlib --pie
 DEFINE GCC_DLINK2_FLAGS_COMMON     = 
--script=$(EDK_TOOLS_PATH)/Scripts/GccBase.lds
-- 
2.1.4

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