TARGET = BUILDDIR = ifeq ($(BUILDDIR), ) $(error BUILDDIR not specified) endif ifeq ($(TARGET), bios) OBJCOPY_ARCH = elf32-i386 else ifeq ($(TARGET), uefi) OBJCOPY_ARCH = elf64-x86-64 else $(error Invalid target) endif TOOLCHAIN = x86_64-elf TOOLCHAIN_CC = $(TOOLCHAIN)-gcc TOOLCHAIN_LD = $(TOOLCHAIN)-ld TOOLCHAIN_AR = $(TOOLCHAIN)-ar TOOLCHAIN_OBJCOPY = $(TOOLCHAIN)-objcopy TOOLCHAIN_OBJDUMP = $(TOOLCHAIN)-objdump TOOLCHAIN_READELF = $(TOOLCHAIN)-readelf ifeq ($(shell command -v $(TOOLCHAIN_CC) ; ), ) TOOLCHAIN_CC := gcc endif ifeq ($(shell command -v $(TOOLCHAIN_LD) ; ), ) TOOLCHAIN_LD := ld endif ifeq ($(shell command -v $(TOOLCHAIN_AR) ; ), ) TOOLCHAIN_AR := ar endif ifeq ($(shell command -v $(TOOLCHAIN_OBJCOPY) ; ), ) TOOLCHAIN_OBJCOPY := objcopy endif ifeq ($(shell command -v $(TOOLCHAIN_OBJDUMP) ; ), ) TOOLCHAIN_OBJDUMP := objdump endif ifeq ($(shell command -v $(TOOLCHAIN_READELF) ; ), ) TOOLCHAIN_READELF := readelf endif COM_OUTPUT = false E9_OUTPUT = false BUILD_ID := $(shell dd if=/dev/urandom count=8 bs=1 2>/dev/null | od -An -t x8 | sed 's/^ /0x/') LIMINE_VERSION := $(shell cat ../version 2>/dev/null || ( git describe --exact-match --tags `git log -n1 --pretty='%h'` 2>/dev/null || ( git log -n1 --pretty='%h' && echo -n "(`git branch --show-current`)" ) ) ) WERROR = -Werror CFLAGS = -O3 -g -pipe -Wall -Wextra $(WERROR) S2CFLAGS = -Os -g -pipe -Wall -Wextra $(WERROR) INTERNAL_CFLAGS := \ -std=gnu11 \ -ffreestanding \ -fno-stack-protector \ -fno-omit-frame-pointer \ -fno-lto \ -fno-pic \ -Wno-address-of-packed-member \ -mno-80387 \ -mno-mmx \ -mno-3dnow \ -mno-sse \ -mno-sse2 \ -MMD \ -DBUILD_ID=$(BUILD_ID) \ -DLIMINE_VERSION='"$(LIMINE_VERSION)"' \ -DCOM_OUTPUT=$(COM_OUTPUT) \ -DE9_OUTPUT=$(E9_OUTPUT) \ -D$(TARGET)=1 \ -I. \ -I.. ifeq ($(TARGET), bios) INTERNAL_CFLAGS += \ -m32 \ -march=i386 \ -fno-pie endif ifeq ($(TARGET), uefi) INTERNAL_CFLAGS32 := \ $(INTERNAL_CFLAGS) \ -m32 \ -march=i386 \ -fpie INTERNAL_CFLAGS += \ -m64 \ -march=x86-64 \ -I../gnu-efi/inc \ -I../gnu-efi/inc/x86_64 \ -fpie \ -mno-red-zone endif LDFLAGS = INTERNAL_LDFLAGS := \ -nostdlib \ -z max-page-size=0x1000 ifeq ($(TARGET), bios) INTERNAL_LDFLAGS += \ -melf_i386 \ -static endif ifeq ($(TARGET), uefi) INTERNAL_LDFLAGS += \ -melf_x86_64 \ -static \ -pie \ --no-dynamic-linker \ -ztext endif .PHONY: all clean builddir C_FILES := $(shell find -L ./ -type f -name '*.c' | sort) ifeq ($(TARGET), bios) ASM_FILES := $(shell find -L ./ -type f -name '*.asm' | sort) OBJ := $(addprefix $(BUILDDIR)/, $(ASM_FILES:.asm=.o) $(C_FILES:.c=.o)) endif ifeq ($(TARGET), uefi) ASM_FILES := $(shell find -L ./ -type f -name '*.asm64' | sort) OBJ := $(addprefix $(BUILDDIR)/, $(ASM_FILES:.asm64=.o) $(C_FILES:.c=.o)) endif HEADER_DEPS := $(addprefix $(BUILDDIR)/, $(C_FILES:.c=.d)) ifeq ($(TARGET), bios) all: $(MAKE) builddir $(MAKE) $(BUILDDIR)/limine_dbg.elf $(BUILDDIR)/limine.sys $(BUILDDIR)/stage2.bin $(BUILDDIR)/stage2.bin.gz else ifeq ($(TARGET), uefi) all: $(MAKE) builddir $(MAKE) $(BUILDDIR)/BOOTX64.EFI endif builddir: for i in $(OBJ); do mkdir -p `dirname $$i`; done $(BUILDDIR)/sys/smp_trampoline.bin: sys/smp_trampoline.real nasm $< -f bin -o $@ $(BUILDDIR)/sys/smp_trampoline.o: $(BUILDDIR)/sys/smp_trampoline.bin cd "`dirname $<`" && \ $(TOOLCHAIN_OBJCOPY) -B i8086 -I binary -O $(OBJCOPY_ARCH) "`basename $<`" $@ $(BUILDDIR)/font.o: font.bin cd "`dirname $<`" && \ $(TOOLCHAIN_OBJCOPY) -B i8086 -I binary -O $(OBJCOPY_ARCH) "`basename $<`" $@ ifeq ($(TARGET), bios) $(BUILDDIR)/stage2.bin.gz: $(BUILDDIR)/stage2.bin gzip -n -9 < $< > $@ $(BUILDDIR)/stage2.bin: $(BUILDDIR)/limine.sys dd if=$< bs=$$(( 0x$$($(TOOLCHAIN_READELF) -S $(BUILDDIR)/limine.elf | grep .stage3.text | sed 's/^.*] //' | awk '{print $$3}' | sed 's/^0*//') - 0x8000 )) count=1 of=$@ $(BUILDDIR)/stage2.map.o: $(BUILDDIR)/limine_stage2only.elf GENSYMS="`pwd`/gensyms.sh" && \ cd "`dirname $<`" && \ "$$GENSYMS" $(TOOLCHAIN_OBJDUMP) $< stage2 32 $(BUILDDIR)/full.map.o: $(BUILDDIR)/limine_nomap.elf GENSYMS="`pwd`/gensyms.sh" && \ cd "`dirname $<`" && \ "$$GENSYMS" $(TOOLCHAIN_OBJDUMP) $< full 32 $(BUILDDIR)/limine.sys: $(BUILDDIR)/limine.elf $(TOOLCHAIN_OBJCOPY) -O binary $< $@ $(BUILDDIR)/limine_stage2only.elf: $(OBJ) $(TOOLCHAIN_LD) $^ $(LDFLAGS) $(INTERNAL_LDFLAGS) -Tlinker_stage2only.ld -o $@ || \ ( echo "This error may mean that stage 2 was trying to use stage 3 symbols before loading stage 3" && \ false ) $(BUILDDIR)/limine_nomap.elf: $(OBJ) $(BUILDDIR)/font.o $(BUILDDIR)/sys/smp_trampoline.o $(BUILDDIR)/stage2.map.o $(TOOLCHAIN_LD) $^ $(LDFLAGS) $(INTERNAL_LDFLAGS) -Tlinker_nomap.ld -o $@ $(BUILDDIR)/limine.elf: $(OBJ) $(BUILDDIR)/font.o $(BUILDDIR)/sys/smp_trampoline.o $(BUILDDIR)/stage2.map.o $(BUILDDIR)/full.map.o $(TOOLCHAIN_LD) $^ $(LDFLAGS) $(INTERNAL_LDFLAGS) -Tlinker.ld -o $@ $(BUILDDIR)/limine_dbg.elf: $(OBJ) $(BUILDDIR)/font.o $(BUILDDIR)/sys/smp_trampoline.o $(BUILDDIR)/stage2.map.o $(BUILDDIR)/full.map.o $(TOOLCHAIN_LD) $^ $(LDFLAGS) $(INTERNAL_LDFLAGS) -Tlinker_dbg.ld -o $@ endif ifeq ($(TARGET), uefi) $(BUILDDIR)/full.map.o: $(BUILDDIR)/limine_efi_nomap.elf GENSYMS="`pwd`/gensyms.sh" && \ cd "`dirname $<`" && \ "$$GENSYMS" $(TOOLCHAIN_OBJDUMP) $< full 64 $(BUILDDIR)/BOOTX64.EFI: $(BUILDDIR)/limine_efi.elf $(TOOLCHAIN_OBJCOPY) -j .text -j .sdata -j .data -j .dynamic -j .dynsym -j .rel -j .rela -j .rel.* -j .rela.* -j .reloc -j .sbat --target efi-app-x86_64 --subsystem=10 $< $@ ../gnu-efi/gnuefi/crt0-efi-x86_64.o ../gnu-efi/gnuefi/libgnuefi.a: $(MAKE) -C ../gnu-efi/gnuefi CC="$(TOOLCHAIN_CC) -m64 -march=x86-64" AR="$(TOOLCHAIN_AR)" ARCH=x86_64 ../gnu-efi/lib/x86_64/efi_stub.o: $(MAKE) -C ../gnu-efi/lib CC="$(TOOLCHAIN_CC) -m64 -march=x86-64" ARCH=x86_64 x86_64/efi_stub.o $(BUILDDIR)/limine_efi_nomap.elf: ../gnu-efi/gnuefi/crt0-efi-x86_64.o ../gnu-efi/gnuefi/libgnuefi.a ../gnu-efi/lib/x86_64/efi_stub.o $(OBJ) $(BUILDDIR)/font.o $(BUILDDIR)/sys/smp_trampoline.o $(TOOLCHAIN_LD) \ -Tlinker_uefi_nomap.ld \ $^ $(LDFLAGS) $(INTERNAL_LDFLAGS) -o $@ $(BUILDDIR)/limine_efi.elf: ../gnu-efi/gnuefi/crt0-efi-x86_64.o ../gnu-efi/gnuefi/libgnuefi.a ../gnu-efi/lib/x86_64/efi_stub.o $(OBJ) $(BUILDDIR)/font.o $(BUILDDIR)/sys/smp_trampoline.o $(BUILDDIR)/full.map.o $(TOOLCHAIN_LD) \ -Tlinker_uefi.ld \ $^ $(LDFLAGS) $(INTERNAL_LDFLAGS) -o $@ endif -include $(HEADER_DEPS) $(BUILDDIR)/%.o: %.c $(TOOLCHAIN_CC) $(CFLAGS) $(INTERNAL_CFLAGS) -c $< -o $@ -include $(HEADER_DEPS) ifeq ($(TARGET), bios) $(BUILDDIR)/%.s2.o: %.s2.c $(TOOLCHAIN_CC) $(S2CFLAGS) $(INTERNAL_CFLAGS) -c $< -o $@ endif -include $(HEADER_DEPS) ifeq ($(TARGET), uefi) $(BUILDDIR)/%.32.o: %.32.c $(TOOLCHAIN_CC) $(CFLAGS) $(INTERNAL_CFLAGS32) -c $< -o $@.32 $(TOOLCHAIN_OBJCOPY) -I elf32-i386 -O elf64-x86-64 $@.32 $@ rm $@.32 endif ifeq ($(TARGET), bios) $(BUILDDIR)/%.o: %.asm nasm $< -F dwarf -g -Werror -f elf32 -o $@ endif ifeq ($(TARGET), uefi) $(BUILDDIR)/%.o: %.asm64 nasm $< -F dwarf -g -Werror -f elf64 -o $@ endif clean: rm -rf $(BUILDDIR)