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Volodymyr Babchuk
981d5550fd
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>
39 lines
1.4 KiB
Makefile
39 lines
1.4 KiB
Makefile
# Firmware is a 32-bit target
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override XEN_TARGET_ARCH = x86_32
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# User-supplied CFLAGS are not useful here.
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CFLAGS =
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EXTRA_CFLAGS_XEN_TOOLS =
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include $(XEN_ROOT)/tools/Rules.mk
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ifneq ($(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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$(call cc-option-add,CFLAGS,CC,-fcf-protection=none)
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# Do not add the .note.gnu.property section to any of the firmware objects: it
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# breaks the rombios binary and is not useful for firmware anyway.
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$(call cc-option-add,CFLAGS,CC,-Wa$$(comma)-mx86-used-note=no)
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# Extra CFLAGS suitable for an embedded type of environment.
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CFLAGS += -ffreestanding -msoft-float
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# Use our own set of stand alone headers to build firmware.
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#
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# Ideally using -ffreestanding should be enough, but that relies on the
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# compiler having the right order for include paths (ie: compiler private
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# headers before system ones) or the libc headers having proper arch-agnostic
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# freestanding support. This is not the case in Alpine at least which searches
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# system headers before compiler ones and has arch-specific libc headers. This
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# has been reported upstream:
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# https://gitlab.alpinelinux.org/alpine/aports/-/issues/12477
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# In the meantime (and for resilience against broken systems) use our own set
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# of headers that provide what's needed for the firmware build.
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CFLAGS += -nostdinc -I$(XEN_ROOT)/tools/firmware/include
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