pc-bios/optionrom/Makefile

   1 all: build-all
   2
   3 include ../../config-host.mak
   4
   5 VPATH=$(SRC_PATH)/pc-bios/optionrom
   6 OBJCOPY=objcopy
   7
   8 # from kernel sources - scripts/Kbuild.include
   9 # try-run
  10 # Usage: option = $(call try-run, $(CC)...-o "$$TMP",option-ok,otherwise)
  11 # Exit code chooses option. "$$TMP" is can be used as temporary file and
  12 # is automatically cleaned up.
  13 try-run = $(shell set -e;               \
  14         TMP="$(TMPOUT).$$$$.tmp";       \
  15         if ($(1)) >/dev/null 2>&1;      \
  16         then echo "$(2)";               \
  17         else echo "$(3)";               \
  18         fi;                             \
  19         rm -f "$$TMP")
  20
  21 # cc-option-yn
  22 # Usage: flag := $(call cc-option-yn,-march=winchip-c6)
  23 cc-option-yn = $(call try-run,\
  24         $(CC) $(KBUILD_CFLAGS) $(1) -S -xc /dev/null -o "$$TMP",y,n)
  25
  26 CFLAGS = -Wall -Wstrict-prototypes -Werror -fomit-frame-pointer -fno-builtin
  27 CFLAGS += -I$(SRC_PATH)
  28 ifeq ($(call cc-option-yn,-fno-stack-protector),y)
  29 CFLAGS += -fno-stack-protector
  30 endif
  31
  32 build-all: multiboot.bin
  33
  34 %.o: %.S
  35         $(CC) $(CFLAGS) -o $@ -c $<
  36
  37 %.img: %.o
  38         $(LD) --oformat binary -Ttext 0 -o $@ $<
  39
  40 %.bin: %.img signrom
  41         ./signrom $< $@
  42         cp $@ $(SRC_PATH)/pc-bios/
  43
  44 signrom: signrom.c
  45         $(CC) -o $@ -g -Wall $^
  46
  47 clean:
  48         $(RM) *.o *.img *.bin signrom *~