all: build-all include ../../config-host.mak VPATH=$(SRC_PATH)/pc-bios/optionrom # from kernel sources - scripts/Kbuild.include # try-run # Usage: option = $(call try-run, $(CC)...-o "$$TMP",option-ok,otherwise) # Exit code chooses option. "$$TMP" is can be used as temporary file and # is automatically cleaned up. try-run = $(shell set -e; \ TMP="$(TMPOUT).$$$$.tmp"; \ if ($(1)) >/dev/null 2>&1; \ then echo "$(2)"; \ else echo "$(3)"; \ fi; \ rm -f "$$TMP") # cc-option-yn # Usage: flag := $(call cc-option-yn,-march=winchip-c6) cc-option-yn = $(call try-run,\ $(CC) $(KBUILD_CFLAGS) $(1) -S -xc /dev/null -o "$$TMP",y,n) CFLAGS = -Wall -Wstrict-prototypes -Werror -fomit-frame-pointer -fno-builtin CFLAGS += -I$(SRC_PATH) ifeq ($(call cc-option-yn,-fno-stack-protector),y) CFLAGS += -fno-stack-protector endif build-all: multiboot.bin %.o: %.S $(CC) $(CFLAGS) -o $@ -c $< %.img: %.o $(LD) -Ttext 0 -e _start -s -o $@ $< %.raw: %.img $(OBJCOPY) -O binary -j .text $< $@ %.bin: %.raw $(SRC_PATH)/pc-bios/optionrom/signrom.sh $< $@ clean: $(RM) *.o *.img *.bin *~