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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 $< $@
cp $@ $(SRC_PATH)/pc-bios/
clean:
$(RM) *.o *.img *.bin *~
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