all: build-all # Dummy command so that make thinks it has done something @true include ../../config-host.mak include $(SRC_PATH)/rules.mak $(call set-vpath, $(SRC_PATH)/pc-bios/optionrom) .PHONY : all clean build-all # Compiling with no optimization creates ROMs that are too large ifeq ($(lastword $(filter -O%, -O0 $(CFLAGS))),-O0) override CFLAGS += -O2 endif override CFLAGS += -march=i486 # Drop -fstack-protector and the like QEMU_CFLAGS := $(filter -W%, $(QEMU_CFLAGS)) $(CFLAGS_NOPIE) -ffreestanding QEMU_CFLAGS += $(call cc-option, $(QEMU_CFLAGS), -fno-stack-protector) QEMU_CFLAGS += $(call cc-option, $(QEMU_CFLAGS), -m16) ifeq ($(filter -m16, $(QEMU_CFLAGS)),) # Attempt to work around compilers that lack -m16 (GCC <= 4.8, clang <= ??) # On GCC we add -fno-toplevel-reorder to keep the order of asm blocks with # respect to the rest of the code. clang does not have -fno-toplevel-reorder, # but it places all asm blocks at the beginning and we're relying on it for # the option ROM header. So just force clang not to use the integrated # assembler, which doesn't support .code16gcc. QEMU_CFLAGS += $(call cc-option, $(QEMU_CFLAGS), -fno-toplevel-reorder) QEMU_CFLAGS += $(call cc-option, $(QEMU_CFLAGS), -no-integrated-as) QEMU_CFLAGS += -m32 -include $(SRC_PATH)/pc-bios/optionrom/code16gcc.h endif QEMU_INCLUDES += -I$(SRC_PATH) Wa = -Wa, ASFLAGS += -32 QEMU_CFLAGS += $(call cc-c-option, $(QEMU_CFLAGS), $(Wa)-32) build-all: multiboot.bin linuxboot.bin linuxboot_dma.bin kvmvapic.bin pvh.bin # suppress auto-removal of intermediate files .SECONDARY: %.o: %.S $(call quiet-command,$(CPP) $(QEMU_INCLUDES) $(QEMU_DGFLAGS) -c -o - $< | $(AS) $(ASFLAGS) -o $@,"AS","$(TARGET_DIR)$@") pvh.img: pvh.o pvh_main.o $(call quiet-command,$(LD) $(LDFLAGS_NOPIE) -m $(LD_I386_EMULATION) -T $(SRC_PATH)/pc-bios/optionrom/flat.lds -s -o $@ $^,"BUILD","$(TARGET_DIR)$@") %.img: %.o $(call quiet-command,$(LD) $(LDFLAGS_NOPIE) -m $(LD_I386_EMULATION) -T $(SRC_PATH)/pc-bios/optionrom/flat.lds -s -o $@ $<,"BUILD","$(TARGET_DIR)$@") %.raw: %.img $(call quiet-command,$(OBJCOPY) -O binary -j .text $< $@,"BUILD","$(TARGET_DIR)$@") %.bin: %.raw $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/signrom.py $< $@,"SIGN","$(TARGET_DIR)$@") clean: rm -f *.o *.d *.raw *.img *.bin *~