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130 lines
3.4 KiB
Makefile
130 lines
3.4 KiB
Makefile
# detect architecture
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MYARCH = $(shell uname -m | sed s,i[3456789]86,ia32,)
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ifeq ($(ARCH),)
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ARCH = $(MYARCH)
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endif
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# get source files, generate object names
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ifeq ($(SRCS),)
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SRCS = $(wildcard *.c) $(wildcard *.S)
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endif
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ifeq ($(OBJS),)
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TMP = $(SRCS:.c=.o)
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OBJS = $(TMP:.S=.o)
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endif
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ifneq ($(OUTDIR),)
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# OUTDIR is not used with uefi/*.o deliberately
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OUTDIR:=$(addsuffix /,$(OUTDIR))
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endif
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CFLAGS += -fshort-wchar -fno-strict-aliasing -ffreestanding -fno-stack-protector -fno-stack-check -I. -I./uefi \
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-I/usr/include -I/usr/include/efi -I/usr/include/efi/protocol -I/usr/include/efi/$(ARCH) -D__$(ARCH)__
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ifeq ($(ARCH),x86_64)
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CFLAGS += -DHAVE_USE_MS_ABI -mno-red-zone
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endif
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# for libuefi.a
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LIBSRCS = $(filter-out $(wildcard crt_*.c),$(wildcard *.c)) $(wildcard *.S)
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TMP2 = $(LIBSRCS:.c=.o)
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LIBOBJS = $(TMP2:.S=.o)
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# detect toolchain
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ifeq ($(wildcard /usr/bin/clang)$(wildcard /usr/local/bin/clang)$(wildcard /usr/lib/llvm/*/bin/clang),)
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USE_GCC = 1
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endif
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ifneq ($(USE_GCC),)
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ifeq ($(ARCH),x86_64)
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CFLAGS += -maccumulate-outgoing-args
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endif
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CFLAGS += -Wno-builtin-declaration-mismatch -fpic -fPIC
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LDFLAGS += -nostdlib -shared -Bsymbolic -Luefi uefi/crt_$(ARCH).o
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LIBS += -o $(addprefix $(OUTDIR),$(TARGET).so) -luefi -T uefi/elf_$(ARCH)_efi.lds
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# see if we're cross-compiling
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ifneq ($(ARCH),$(MYARCH))
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CC = $(ARCH)-elf-gcc
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LD = $(ARCH)-elf-ld
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OBJCOPY ?= $(ARCH)-elf-objcopy
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else
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CC = gcc
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LD = ld
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OBJCOPY ?= objcopy
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endif
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ifeq ($(ARCH),aarch64)
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EFIARCH = pei-aarch64-little
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else
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EFIARCH = efi-app-$(ARCH)
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endif
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AR ?= ar
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else
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CFLAGS += --target=$(ARCH)-pc-win32-coff -Wno-builtin-requires-header -Wno-incompatible-library-redeclaration -Wno-long-long
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LDFLAGS += -subsystem:efi_application -nodefaultlib -dll -entry:uefi_init uefi/*.o
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LIBS = -out:$(addprefix $(OUTDIR),$(TARGET))
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CC = clang
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LD = lld -flavor link
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OBJCOPY = true
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endif
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# recipies
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ifeq ($(wildcard uefi/Makefile),)
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ALLTARGETS = crt_$(ARCH).o libuefi.a buildlib
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else
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ALLTARGETS = uefi/crt_$(ARCH).o uefi/libuefi.a $(OBJS) $(TARGET)
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endif
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all: $(OUTDIR) $(ALSO) $(EXTRA) $(ALLTARGETS)
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ifneq ($(OUTDIR),)
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$(OUTDIR):
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@mkdir -p $(OUTDIR)
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endif
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uefi/libuefi.a:
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@make --no-print-directory -C uefi libuefi.a USE_GCC=$(USE_GCC) ARCH=$(ARCH)
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libuefi.lib: $(LIBOBJS)
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libuefi.a: $(LIBOBJS)
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ifneq ($(USE_GCC),)
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@rm $@ 2>/dev/null || true
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$(AR) -frsv $@ $(LIBOBJS) >/dev/null
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else
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@true
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endif
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$(TARGET): $(addprefix $(OUTDIR),$(TARGET).so)
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ifneq ($(USE_GCC),)
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$(OBJCOPY) -j .text -j .sdata -j .data -j .dynamic -j .dynsym -j .rel -j .rela -j .rel.* -j .rela.* -j .reloc --target $(EFIARCH) --subsystem=10 $^ $(addprefix $(OUTDIR),$@) || echo target: $(EFIARCH)
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@rm $(addprefix $(OUTDIR),$(TARGET).so)
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endif
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$(addprefix $(OUTDIR),$(TARGET).so): $(addprefix $(OUTDIR),$(OBJS)) $(EXTRA)
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$(LD) $(LDFLAGS) $^ $(LIBS)
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@rm $(addprefix $(OUTDIR),*.lib) 2>/dev/null || true
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uefi/%.o: uefi/%.c
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$(CC) $(CFLAGS) -c $< -o $@
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%.o: %.c
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$(CC) $(CFLAGS) -c $< -o $(addprefix $(OUTDIR),$@)
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%.o: %.S
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$(CC) $(CFLAGS) -c $< -o $(addprefix $(OUTDIR),$@)
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buildlib:
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@mkdir ../build ../build/uefi 2>/dev/null || true
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@cp crt_$(ARCH).o ../build/uefi/crt0.o
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@cp elf_$(ARCH)_efi.lds ../build/uefi/link.ld
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@cp libuefi.a uefi.h ../build/uefi
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clean:
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@rm $(addprefix $(OUTDIR),$(TARGET)) *.o *.a *.lib *.elf $(LIBOBJS) 2>/dev/null || true
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ifneq ($(OUTDIR),)
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@rm -rf $(OUTDIR)
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endif
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distclean: clean
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ifeq ($(wildcard uefi/Makefile),)
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@rm -rf ../build 2>/dev/null || true
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else
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@rm uefi/*.o uefi/libuefi.a 2>/dev/null || true
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endif
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