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# Code size reduction.
#
CFLAGS += -fstrength-reduce -fomit-frame-pointer
# Code size reduction. gcc3 needs a different syntax to gcc2 if you
# want to avoid spurious warnings.
#
CFLAGS += -falign-jumps=1 -falign-loops=1 -falign-functions=1
# Use %rip-relative addressing wherever possible.
#
CFLAGS += -fpie
# Force 64-bit code
#
CFLAGS += -m64
ASFLAGS += --64
LDFLAGS += -m elf_x86_64
# EFI requires -fshort-wchar, and nothing else currently uses wchar_t
#
CFLAGS += -fshort-wchar
# We need to undefine the default macro "i386" when compiling .S
# files, otherwise ".arch i386" translates to ".arch 1"...
#
CFLAGS += -Ui386
# Add -maccumulate-outgoing-args if required by this version of gcc
#
ifeq ($(CCTYPE),gcc)
MS_ABI_TEST_CODE := extern void __attribute__ (( ms_abi )) ms_abi(); \
void sysv_abi ( void ) { ms_abi(); }
MS_ABI_TEST = $(ECHO) '$(MS_ABI_TEST_CODE)' | \
$(CC) -m64 -mno-accumulate-outgoing-args -x c -c - -o /dev/null \
>/dev/null 2>&1
MS_ABI_FLAGS := $(shell $(MS_ABI_TEST) || $(ECHO) '-maccumulate-outgoing-args')
WORKAROUND_CFLAGS += $(MS_ABI_FLAGS)
endif
# x86_64-specific directories containing source files
#
SRCDIRS += arch/x86_64/core
SRCDIRS += arch/x86_64/prefix
# Include common x86 Makefile
#
MAKEDEPS += arch/x86/Makefile
include arch/x86/Makefile
# Include platform-specific Makefile
#
MAKEDEPS += arch/x86_64/Makefile.$(PLATFORM)
include arch/x86_64/Makefile.$(PLATFORM)
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