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include $(MAKEDIR)/syslinux.mk
com32 = $(topdir)/com32
core = $(topdir)/core
# Support IA32 and x86_64 platforms with one build
# Set up architecture specifics; for cross compilation, set ARCH as apt
# gnuefi sets up architecture specifics in ia32 or x86_64 sub directories
# set up the LIBDIR and EFIINC for building for the appropriate architecture
GCCOPT := $(call gcc_ok,-fno-stack-protector,)
EFIINC = $(objdir)/include/efi
LIBDIR = $(objdir)/lib
ifeq ($(ARCH),i386)
ARCHOPT = -m32 -march=i386
EFI_SUBARCH = ia32
endif
ifeq ($(ARCH),x86_64)
ARCHOPT = -m64 -march=x86-64
EFI_SUBARCH = $(ARCH)
endif
#LIBDIR=/usr/lib
FORMAT=efi-app-$(EFI_SUBARCH)
CFLAGS = -I$(EFIINC) -I$(EFIINC)/$(EFI_SUBARCH) \
-DEFI_FUNCTION_WRAPPER -fPIC -fshort-wchar -ffreestanding \
-Wall -I$(com32)/include -I$(com32)/include/sys \
-I$(core)/include -I$(core)/ $(ARCHOPT) \
-I$(com32)/lib/ -I$(com32)/libutil/include -std=gnu99 \
-DELF_DEBUG -DSYSLINUX_EFI -I$(objdir) \
$(GCCWARN) -D__COM32__ -D__FIRMWARE_$(FIRMWARE)__ -mno-red-zone \
-DLDLINUX=\"$(LDLINUX)\" -fvisibility=hidden \
-Wno-unused-parameter $(GCCOPT)
CRT0 := $(LIBDIR)/crt0-efi-$(EFI_SUBARCH).o
LDSCRIPT := $(LIBDIR)/elf_$(EFI_SUBARCH)_efi.lds
LDFLAGS = -T $(SRC)/$(ARCH)/syslinux.ld -Bsymbolic -pie -nostdlib -znocombreloc \
-L$(LIBDIR) --hash-style=gnu -m elf_$(ARCH) $(CRT0) -E
SFLAGS = $(GCCOPT) $(GCCWARN) $(ARCHOPT) \
-fomit-frame-pointer -D__COM32__ -D__FIRMWARE_$(FIRMWARE)__ \
-nostdinc -iwithprefix include \
-I$(com32)/libutil/include -I$(com32)/include -I$(com32)/include/sys $(GPLINCLUDE)
LIBEFI = $(objdir)/lib/libefi.a
$(LIBEFI):
@echo Building gnu-efi for $(EFI_SUBARCH)
$(topdir)/efi/check-gnu-efi.sh $(EFI_SUBARCH) $(objdir)
%.o: %.S # Cancel old rule
%.o: %.c
.PRECIOUS: %.o
%.o: %.S $(LIBEFI)
$(CC) $(SFLAGS) -c -o $@ $<
.PRECIOUS: %.o
%.o: %.c $(LIBEFI)
$(CC) $(CFLAGS) -c -o $@ $<
#%.efi: %.so
# $(OBJCOPY) -j .text -j .sdata -j .data -j .dynamic -j .dynsym -j .rel \
# -j .rela -j .reloc --target=$(FORMAT) $*.so $@
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