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common: remove -fno-stack-protector from EMBEDDED_EXTRA_CFLAGS
This patch is preparation for making stack protector configurable. First step is to remove -fno-stack-protector flag from EMBEDDED_EXTRA_CFLAGS so separate components (Hypervisor in this case) can enable/disable this feature by themselves. Signed-off-by: Volodymyr Babchuk <volodymyr_babchuk@epam.com> Reviewed-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
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Volodymyr Babchuk authored and Andrew Cooper committed
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@@ -198,7 +198,7 @@ endif
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APPEND_LDFLAGS += $(foreach i, $(APPEND_LIB), -L$(i))
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APPEND_CFLAGS += $(foreach i, $(APPEND_INCLUDES), -I$(i))
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EMBEDDED_EXTRA_CFLAGS := -fno-pie -fno-stack-protector
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EMBEDDED_EXTRA_CFLAGS := -fno-pie
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EMBEDDED_EXTRA_CFLAGS += -fno-exceptions -fno-asynchronous-unwind-tables
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XEN_EXTFILES_URL ?= https://xenbits.xen.org/xen-extfiles
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@@ -13,6 +13,7 @@ export stubdom=y
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export debug=y
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# Moved from config/StdGNU.mk
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CFLAGS += -O1 -fno-omit-frame-pointer
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CFLAGS += -fno-stack-protector
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ifeq (,$(findstring clean,$(MAKECMDGOALS)))
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ifeq ($(wildcard $(MINI_OS)/Config.mk),)
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@@ -11,6 +11,8 @@ ifneq ($(debug),y)
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CFLAGS += -DNDEBUG
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endif
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CFLAGS += -fno-stack-protector
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$(call cc-options-add,CFLAGS,CC,$(EMBEDDED_EXTRA_CFLAGS))
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$(call cc-option-add,CFLAGS,CC,-fcf-protection=none)
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@@ -4,7 +4,7 @@ include $(XEN_ROOT)/tools/Rules.mk
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$(call cc-options-add,CFLAGS,CC,$(EMBEDDED_EXTRA_CFLAGS))
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CFLAGS += -fno-builtin -g0 $($(TESTCASE)-cflags)
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CFLAGS += -fno-builtin -fno-stack-protector -g0 $($(TESTCASE)-cflags)
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LDFLAGS_DIRECT += $(shell { $(LD) -v --warn-rwx-segments; } >/dev/null 2>&1 && echo --no-warn-rwx-segments)
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@@ -435,6 +435,8 @@ else
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CFLAGS_UBSAN :=
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endif
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CFLAGS += -fno-stack-protector
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ifeq ($(CONFIG_LTO),y)
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CFLAGS += -flto
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LDFLAGS-$(CONFIG_CC_IS_CLANG) += -plugin LLVMgold.so
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@@ -17,6 +17,7 @@ obj32 := $(addprefix $(obj)/,$(obj32))
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CFLAGS_x86_32 := $(subst -m64,-m32 -march=i686,$(XEN_TREEWIDE_CFLAGS))
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$(call cc-options-add,CFLAGS_x86_32,CC,$(EMBEDDED_EXTRA_CFLAGS))
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CFLAGS_x86_32 += -Werror -fno-builtin -g0 -msoft-float -mregparm=3
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CFLAGS_x86_32 += -fno-stack-protector
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CFLAGS_x86_32 += -nostdinc -include $(filter %/include/xen/config.h,$(XEN_CFLAGS))
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CFLAGS_x86_32 += $(filter -I% -O%,$(XEN_CFLAGS)) -D__XEN__
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