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BaseTools: Add GCC flags to Basetool build. 

BZ:https://bugzilla.tianocore.org/show_bug.cgi?id=1764

Some compiler flags restrict the compiler from making
arbitrary decisions while handling undefined C/C++ behaviors.
Therefore they can be used to fix some issues caused by undefined behavior.

For example, for GCC, the following flags are available:
-fno-delete-null-pointer-checks tells
the compiler NOT to assume that null pointer deference does not exist.
-fwrapv tells the compiler that signed overflow always wraps.

This patch is going to add these 2 build options to
BaseTool GCC build option.

Signed-off-by: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Feng, Bob C 2019-04-30 19:07:01 +08:00
parent 0d6de095a5
commit c4c8c340ef
1 changed files with 2 additions and 1 deletions
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3
BaseTools/Source/C/Makefiles/header.makefile
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@ -71,7 +71,8 @@ ifeq ($(DARWIN),Darwin)
BUILD_CFLAGS = -MD -fshort-wchar -fno-strict-aliasing -Wall -Werror \
-Wno-deprecated-declarations -Wno-self-assign -Wno-unused-result -nostdlib -g
else
BUILD_CFLAGS = -MD -fshort-wchar -fno-strict-aliasing -Wall -Werror \
BUILD_CFLAGS = -MD -fshort-wchar -fno-strict-aliasing -fwrapv \
-fno-delete-null-pointer-checks -Wall -Werror \
-Wno-deprecated-declarations -Wno-stringop-truncation -Wno-restrict \
-Wno-unused-result -nostdlib -g
endif