| OBJCOPY=objcopy |
| |
| # 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 |
| ifeq ($(call cc-option-yn,-fno-stack-protector),y) |
| CFLAGS += -fno-stack-protector |
| endif |
| |
| all: extboot.bin |
| |
| %.o: %.S |
| $(CC) $(CFLAGS) -o $@ -c $< |
| |
| extboot.img: extboot.o |
| $(LD) --oformat binary -Ttext 0 -o $@ $< |
| |
| extboot.bin: extboot.img signrom |
| ./signrom extboot.img extboot.bin |
| |
| signrom: signrom.c |
| $(CC) -o $@ -g -Wall $^ |
| |
| clean: |
| $(RM) *.o *.img *.bin signrom *~ |
