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optionrom: simplify Makefile

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Make it independent from the rules.mak, and clean up to use pattern rules.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Marc-André Lureau 2019-10-08 19:27:24 +04:00 committed by Paolo Bonzini
parent 77afc75f69
commit bf708f3c4a
1 changed files with 51 additions and 36 deletions
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87
pc-bios/optionrom/Makefile
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@ -1,13 +1,16 @@
all: build-all
CURRENT_MAKEFILE := $(realpath $(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST)))
SRC_DIR := $(dir $(CURRENT_MAKEFILE))
TOPSRC_DIR := $(SRC_DIR)/../..
VPATH = $(SRC_DIR)
all: multiboot.bin linuxboot.bin linuxboot_dma.bin kvmvapic.bin pvh.bin
# Dummy command so that make thinks it has done something
@true
include ../../config-host.mak
include $(SRC_PATH)/rules.mak
$(call set-vpath, $(SRC_PATH)/pc-bios/optionrom)
.PHONY : all clean build-all
quiet-command = $(if $(V),$1,$(if $(2),@printf " %-7s %s\n" $2 $3 && $1, @$1))
cc-option = $(if $(shell $(CC) $1 -S -o /dev/null -xc /dev/null >/dev/null 2>&1 && echo OK), $1, $2)
# Compiling with no optimization creates ROMs that are too large
ifeq ($(lastword $(filter -O%, -O0 $(CFLAGS))),-O0)
@ -15,48 +18,60 @@ override CFLAGS += -O2
endif
override CFLAGS += -march=i486
# Drop -fstack-protector and the like
QEMU_CFLAGS := $(filter -W%, $(QEMU_CFLAGS)) $(CFLAGS_NOPIE) -ffreestanding
QEMU_CFLAGS += $(call cc-option, $(QEMU_CFLAGS), -fno-stack-protector)
QEMU_CFLAGS += $(call cc-option, $(QEMU_CFLAGS), -m16)
ifeq ($(filter -m16, $(QEMU_CFLAGS)),)
# Flags for dependency generation
override CPPFLAGS += -MMD -MP -MT $@ -MF $(@D)/$(*F).d
override CFLAGS += $(filter -W%, $(QEMU_CFLAGS))
override CFLAGS += $(CFLAGS_NOPIE) -ffreestanding -I$(TOPSRC_DIR)/include
override CFLAGS += $(call cc-option, -fno-stack-protector)
override CFLAGS += $(call cc-option, -m16)
ifeq ($(filter -m16, $(CFLAGS)),)
# Attempt to work around compilers that lack -m16 (GCC <= 4.8, clang <= ??)
# On GCC we add -fno-toplevel-reorder to keep the order of asm blocks with
# respect to the rest of the code. clang does not have -fno-toplevel-reorder,
# but it places all asm blocks at the beginning and we're relying on it for
# the option ROM header. So just force clang not to use the integrated
# assembler, which doesn't support .code16gcc.
QEMU_CFLAGS += $(call cc-option, $(QEMU_CFLAGS), -fno-toplevel-reorder)
QEMU_CFLAGS += $(call cc-option, $(QEMU_CFLAGS), -no-integrated-as)
QEMU_CFLAGS += -m32 -include $(SRC_PATH)/pc-bios/optionrom/code16gcc.h
override CFLAGS += $(call cc-option, -fno-toplevel-reorder)
override CFLAGS += $(call cc-option, -no-integrated-as)
override CFLAGS += -m32 -include $(SRC_DIR)/code16gcc.h
endif
QEMU_INCLUDES += -I$(SRC_PATH)
Wa = -Wa,
ASFLAGS += -32
QEMU_CFLAGS += $(call cc-c-option, $(QEMU_CFLAGS), $(Wa)-32)
override ASFLAGS += -32
override CFLAGS += $(call cc-option, $(Wa)-32)
build-all: multiboot.bin linuxboot.bin linuxboot_dma.bin kvmvapic.bin pvh.bin
LD_I386_EMULATION ?= elf_i386
override LDFLAGS = -m $(LD_I386_EMULATION) -T $(SRC_DIR)/flat.lds
override LDFLAGS += $(LDFLAGS_NOPIE)
all: multiboot.bin linuxboot.bin linuxboot_dma.bin kvmvapic.bin pvh.bin
pvh.img: pvh.o pvh_main.o
%.o: %.S
$(call quiet-command,$(CPP) $(CPPFLAGS) -c -o - $< | $(AS) $(ASFLAGS) -o $@,"AS","$@")
%.o: %.c
$(call quiet-command,$(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@,"CC","$@")
%.img: %.o
$(call quiet-command,$(LD) $(LDFLAGS) -s -o $@ $^,"BUILD","$@")
%.raw: %.img
$(call quiet-command,$(OBJCOPY) -O binary -j .text $< $@,"BUILD","$@")
%.bin: %.raw
$(call quiet-command,$(PYTHON) $(TOPSRC_DIR)/scripts/signrom.py $< $@,"SIGN","$@")
include $(wildcard *.d)
clean:
rm -f *.o *.d *.raw *.img *.bin *~
# suppress auto-removal of intermediate files
.SECONDARY:
%.o: %.S
$(call quiet-command,$(CPP) $(QEMU_INCLUDES) $(QEMU_DGFLAGS) -c -o - $< | $(AS) $(ASFLAGS) -o $@,"AS","$(TARGET_DIR)$@")
pvh.img: pvh.o pvh_main.o
$(call quiet-command,$(LD) $(LDFLAGS_NOPIE) -m $(LD_I386_EMULATION) -T $(SRC_PATH)/pc-bios/optionrom/flat.lds -s -o $@ $^,"BUILD","$(TARGET_DIR)$@")
%.img: %.o
$(call quiet-command,$(LD) $(LDFLAGS_NOPIE) -m $(LD_I386_EMULATION) -T $(SRC_PATH)/pc-bios/optionrom/flat.lds -s -o $@ $<,"BUILD","$(TARGET_DIR)$@")
%.raw: %.img
$(call quiet-command,$(OBJCOPY) -O binary -j .text $< $@,"BUILD","$(TARGET_DIR)$@")
%.bin: %.raw
$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/signrom.py $< $@,"SIGN","$(TARGET_DIR)$@")
clean:
rm -f *.o *.d *.raw *.img *.bin *~
.PHONY: all clean