1include config.mak 2SRC_DIR := $(TOPSRC_DIR)/pc-bios/optionrom 3VPATH = $(SRC_DIR) 4 5all: 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 9CFLAGS = -O2 -g 10 11NULL := 12SPACE := $(NULL) # 13TARGET_PREFIX := $(patsubst %/,%:$(SPACE),$(TARGET_DIR)) 14 15quiet-@ = $(if $(V),,@$(if $1,printf "%s\n" "$(TARGET_PREFIX)$1" && )) 16quiet-command = $(call quiet-@,$2 $@)$1 17 18# Flags for dependency generation 19override CPPFLAGS += -MMD -MP -MT $@ -MF $(@D)/$(*F).d 20 21override CFLAGS += -march=i486 -Wall $(EXTRA_CFLAGS) -m16 22override CFLAGS += -ffreestanding -I$(TOPSRC_DIR)/include 23 24cc-test = $(CC) -Werror $1 -c -o /dev/null -xc /dev/null >/dev/null 2>/dev/null 25cc-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 31config-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 $(call cc-option,-Wno-array-bounds)) 3> config-cc.mak 37-include config-cc.mak 38 39override LDFLAGS = -nostdlib -Wl,--build-id=none,-T,$(SRC_DIR)/flat.lds 40 41pvh.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 58include $(wildcard *.d) 59 60clean: 61 rm -f *.o *.d *.raw *.img *.bin *~ 62 63distclean: 64 rm -f config-cc.mak 65 66# suppress auto-removal of intermediate files 67.SECONDARY: 68 69.PHONY: all clean distclean 70