pc-bios/optionrom/Makefile

   1 include config.mak
   2 SRC_DIR := $(TOPSRC_DIR)/pc-bios/optionrom
   3 VPATH = $(SRC_DIR)
   4
   5 all: multiboot.bin multiboot_dma.bin linuxboot.bin linuxboot_dma.bin kvmvapic.bin pvh.bin
   6 # Dummy command so that make thinks it has done something
   7         @true
   8
   9 CFLAGS = -O2 -g
  10
  11 NULL :=
  12 SPACE := $(NULL) #
  13 TARGET_PREFIX := $(patsubst %/,%:$(SPACE),$(TARGET_DIR))
  14
  15 quiet-@ = $(if $(V),,@$(if $1,printf "%s\n" "$(TARGET_PREFIX)$1" && ))
  16 quiet-command = $(call quiet-@,$2 $@)$1
  17
  18 # Flags for dependency generation
  19 override CPPFLAGS += -MMD -MP -MT $@ -MF $(@D)/$(*F).d
  20
  21 override CFLAGS += -march=i486 -Wall $(EXTRA_CFLAGS) -m16
  22 override CFLAGS += -ffreestanding -I$(TOPSRC_DIR)/include
  23
  24 cc-test = $(CC) -Werror $1 -c -o /dev/null -xc /dev/null >/dev/null 2>/dev/null
  25 cc-option = if $(call cc-test, $1); then \
  26     echo "$(TARGET_PREFIX)$1 detected" && echo "override CFLAGS += $1" >&3; else \
  27     echo "$(TARGET_PREFIX)$1 not detected" $(if $2,&& echo "override CFLAGS += $2" >&3); fi
  28
  29 # If -fcf-protection is enabled in flags or compiler defaults that will
  30 # conflict with -march=i486
  31 config-cc.mak: Makefile
  32         $(quiet-@)($(call cc-option,-fcf-protection=none); \
  33             $(call cc-option,-fno-pie); \
  34             $(call cc-option,-no-pie); \
  35             $(call cc-option,-fno-stack-protector); \
  36             $(call cc-option,-Wno-array-bounds)) 3> config-cc.mak
  37 -include config-cc.mak
  38
  39 override LDFLAGS = -nostdlib -Wl,--build-id=none,-T,$(SRC_DIR)/flat.lds
  40
  41 pvh.img: pvh.o pvh_main.o
  42
  43 %.o: %.S
  44         $(call quiet-command,$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $@ $<,Assembling)
  45
  46 %.o: %.c
  47         $(call quiet-command,$(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@,Compiling)
  48
  49 %.img: %.o
  50         $(call quiet-command,$(CC) $(CFLAGS) $(LDFLAGS) -s -o $@ $^,Linking)
  51
  52 %.raw: %.img
  53         $(call quiet-command,$(OBJCOPY) -O binary -j .text $< $@,Extracting raw object)
  54
  55 %.bin: %.raw
  56         $(call quiet-command,$(PYTHON) $(TOPSRC_DIR)/scripts/signrom.py $< $@,Computing checksum into)
  57
  58 include $(wildcard *.d)
  59
  60 clean:
  61         rm -f *.o *.d *.raw *.img *.bin *~
  62
  63 distclean:
  64         rm -f config-cc.mak
  65
  66 # suppress auto-removal of intermediate files
  67 .SECONDARY:
  68
  69 .PHONY: all clean distclean