Makefile - seabios - Gitiles

 # SeaBIOS build system
 #
 # Copyright (C) 2008-2010  Kevin O'Connor <kevin@koconnor.net>
 #
 # This file may be distributed under the terms of the GNU LGPLv3 license.

 # Program version
 VERSION=1.6.3.2-$(shell date +"%Y%m%d_%H%M%S")-$(shell hostname)

 # Output directory
 OUT=out/

 # Source files
 SRCBOTH=misc.c stacks.c pmm.c output.c util.c block.c floppy.c ata.c mouse.c \
         kbd.c pci.c serial.c clock.c pic.c cdrom.c ps2port.c smp.c resume.c \
         pnpbios.c pirtable.c vgahooks.c ramdisk.c pcibios.c blockcmd.c \
         usb.c usb-uhci.c usb-ohci.c usb-ehci.c usb-hid.c usb-msc.c \
         virtio-ring.c virtio-pci.c virtio-blk.c apm.c ahci.c
 SRC16=$(SRCBOTH) system.c disk.c font.c
 SRC32FLAT=$(SRCBOTH) post.c shadow.c memmap.c coreboot.c boot.c \
       acpi.c smm.c mptable.c smbios.c pciinit.c optionroms.c mtrr.c \
       lzmadecode.c bootsplash.c jpeg.c usb-hub.c paravirt.c \
       biostables.c xen.c bmp.c
 SRC32SEG=util.c output.c pci.c pcibios.c apm.c stacks.c

 cc-option = $(shell if test -z "`$(1) $(2) -S -o /dev/null -xc \
               /dev/null 2>&1`"; then echo "$(2)"; else echo "$(3)"; fi ;)

 # Default compiler flags
 COMMONCFLAGS = -I$(OUT) -Os -MD \
                -Wall -Wno-strict-aliasing -Wold-style-definition \
                $(call cc-option,$(CC),-Wtype-limits,) \
                -m32 -march=i386 -mregparm=3 -mpreferred-stack-boundary=2 \
                -mrtd -minline-all-stringops \
                -freg-struct-return -ffreestanding -fomit-frame-pointer \
                -fno-delete-null-pointer-checks \
                -ffunction-sections -fdata-sections -fno-common
 COMMONCFLAGS += $(call cc-option,$(CC),-nopie,)
 COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector,)
 COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector-all,)

 CFLAGS32FLAT = $(COMMONCFLAGS) -g -DMODE16=0 -DMODESEGMENT=0
 CFLAGSSEG = $(COMMONCFLAGS) -DMODESEGMENT=1 -fno-defer-pop \
             $(call cc-option,$(CC),-fno-jump-tables,-DMANUAL_NO_JUMP_TABLE) \
             $(call cc-option,$(CC),-fno-tree-switch-conversion,)
 CFLAGS32SEG = $(CFLAGSSEG) -DMODE16=0 -g
 CFLAGS16INC = $(CFLAGSSEG) -DMODE16=1 \
               $(call cc-option,$(CC),--param large-stack-frame=4,-fno-inline)
 CFLAGS16 = $(CFLAGS16INC) -g

 all: $(OUT) $(OUT)bios.bin

 # Run with "make V=1" to see the actual compile commands
 ifdef V
 Q=
 else
 Q=@
 MAKEFLAGS += --no-print-directory
 endif

 OBJCOPY=objcopy
 OBJDUMP=objdump
 STRIP=strip
 PYTHON=python

 .PHONY : all clean distclean FORCE

 vpath %.c src vgasrc
 vpath %.S src vgasrc

 ################ Build rules

 # Verify the gcc configuration and test if -fwhole-program works.
 TESTGCC:=$(shell CC="$(CC)" LD="$(LD)" tools/test-gcc.sh)
 ifeq "$(TESTGCC)" "-1"
 $(error "Please upgrade GCC and/or binutils")
 endif

 ifndef COMPSTRAT
 COMPSTRAT=$(TESTGCC)
 endif

 # Do a whole file compile - three methods are supported.
 ifeq "$(COMPSTRAT)" "1"
 # First method - use -fwhole-program without -combine.
 define whole-compile
 @echo "  Compiling whole program $3"
 $(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
 $(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -c $3.tmp.c -o $3
 endef
 else
 ifeq "$(COMPSTRAT)" "2"
 # Second menthod - don't use -fwhole-program at all.
 define whole-compile
 @echo "  Compiling whole program $3"
 $(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
 $(Q)$(CC) $1 -c $3.tmp.c -o $3
 endef
 else
 # Third (and preferred) method - use -fwhole-program with -combine
 define whole-compile
 @echo "  Compiling whole program $3"
 $(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -combine -c $2 -o $3
 endef
 endif
 endif

 %.strip.o: %.o
 	@echo "  Stripping $@"
 	$(Q)$(STRIP) $< -o $@

 $(OUT)%.s: %.c
 	@echo "  Compiling to assembler $@"
 	$(Q)$(CC) $(CFLAGS16INC) -S -c $< -o $@

 $(OUT)%.lds: %.lds.S
 	@echo "  Precompiling $@"
 	$(Q)$(CPP) -P -D__ASSEMBLY__ $< -o $@

 $(OUT)asm-offsets.s: $(OUT)autoconf.h

 $(OUT)asm-offsets.h: $(OUT)asm-offsets.s
 	@echo "  Generating offset file $@"
 	$(Q)./tools/gen-offsets.sh $< $@


 $(OUT)ccode.16.s: $(OUT)autoconf.h ; $(call whole-compile, $(CFLAGS16) -S, $(addprefix src/, $(SRC16)),$@)

 $(OUT)code32seg.o: $(OUT)autoconf.h ; $(call whole-compile, $(CFLAGS32SEG), $(addprefix src/, $(SRC32SEG)),$@)

 $(OUT)ccode32flat.o: $(OUT)autoconf.h ; $(call whole-compile, $(CFLAGS32FLAT), $(addprefix src/, $(SRC32FLAT)),$@)

 $(OUT)code16.o: romlayout.S $(OUT)ccode.16.s $(OUT)asm-offsets.h
 	@echo "  Compiling (16bit) $@"
 	$(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ $< -o $@

 $(OUT)romlayout16.lds: $(OUT)ccode32flat.o $(OUT)code32seg.o $(OUT)code16.o tools/layoutrom.py
 	@echo "  Building ld scripts (version \"$(VERSION)\")"
 	$(Q)echo 'const char VERSION[] = "$(VERSION)";' > $(OUT)version.c
 	$(Q)$(CC) $(CFLAGS32FLAT) -c $(OUT)version.c -o $(OUT)version.o
 	$(Q)$(LD) -melf_i386 -r $(OUT)ccode32flat.o $(OUT)version.o -o $(OUT)code32flat.o
 	$(Q)$(OBJDUMP) -thr $(OUT)code32flat.o > $(OUT)code32flat.o.objdump
 	$(Q)$(OBJDUMP) -thr $(OUT)code32seg.o > $(OUT)code32seg.o.objdump
 	$(Q)$(OBJDUMP) -thr $(OUT)code16.o > $(OUT)code16.o.objdump
 	$(Q)$(PYTHON) ./tools/layoutrom.py $(OUT)code16.o.objdump $(OUT)code32seg.o.objdump $(OUT)code32flat.o.objdump $(OUT)romlayout16.lds $(OUT)romlayout32seg.lds $(OUT)romlayout32flat.lds

 # These are actually built by tools/layoutrom.py above, but by pulling them
 # into an extra rule we prevent make -j from spawning layoutrom.py 4 times.
 $(OUT)romlayout32seg.lds $(OUT)romlayout32flat.lds $(OUT)code32flat.o: $(OUT)romlayout16.lds

 $(OUT)rom16.o: $(OUT)code16.o $(OUT)romlayout16.lds
 	@echo "  Linking $@"
 	$(Q)$(LD) -T $(OUT)romlayout16.lds $< -o $@

 $(OUT)rom32seg.o: $(OUT)code32seg.o $(OUT)romlayout32seg.lds
 	@echo "  Linking $@"
 	$(Q)$(LD) -T $(OUT)romlayout32seg.lds $< -o $@

 $(OUT)rom.o: $(OUT)rom16.strip.o $(OUT)rom32seg.strip.o $(OUT)code32flat.o $(OUT)romlayout32flat.lds
 	@echo "  Linking $@"
 	$(Q)$(LD) -T $(OUT)romlayout32flat.lds $(OUT)rom16.strip.o $(OUT)rom32seg.strip.o $(OUT)code32flat.o -o $@

 $(OUT)bios.bin.elf $(OUT)bios.bin: $(OUT)rom.o tools/checkrom.py
 	@echo "  Prepping $@"
 	$(Q)$(OBJDUMP) -thr $< > $<.objdump
 	$(Q)$(OBJCOPY) -O binary $< $(OUT)bios.bin.raw
 	$(Q)$(PYTHON) ./tools/checkrom.py $<.objdump $(OUT)bios.bin.raw $(OUT)bios.bin
 	$(Q)$(STRIP) -R .comment $< -o $(OUT)bios.bin.elf


 ################ VGA build rules

 # VGA src files
 SRCVGA=src/output.c src/util.c vgasrc/vga.c vgasrc/vgafb.c vgasrc/vgaio.c \
        vgasrc/vgatables.c vgasrc/vgafonts.c vgasrc/clext.c

 $(OUT)vgaccode.16.s: $(OUT)autoconf.h ; $(call whole-compile, $(CFLAGS16) -S -Isrc, $(SRCVGA),$@)

 $(OUT)vgalayout16.o: vgaentry.S $(OUT)vgaccode.16.s $(OUT)asm-offsets.h
 	@echo "  Compiling (16bit) $@"
 	$(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ -Isrc $< -o $@

 $(OUT)vgarom.o: $(OUT)vgalayout16.o $(OUT)vgalayout.lds
 	@echo "  Linking $@"
 	$(Q)$(LD) --gc-sections -T $(OUT)vgalayout.lds $(OUT)vgalayout16.o -o $@

 $(OUT)vgabios.bin.raw: $(OUT)vgarom.o
 	@echo "  Extracting binary $@"
 	$(Q)$(OBJCOPY) -O binary $< $@

 $(OUT)vgabios.bin: $(OUT)vgabios.bin.raw tools/buildrom.py
 	@echo "  Finalizing rom $@"
 	$(Q)$(PYTHON) ./tools/buildrom.py $< $@

 ####### dsdt build rules
 src/%.hex: src/%.dsl
 	@echo "Compiling DSDT"
 	$(Q)cpp -P $< > $(OUT)$*.dsl.i
 	$(Q)iasl -tc -p $(OUT)$* $(OUT)$*.dsl.i
 	$(Q)cp $(OUT)$*.hex $@

 $(OUT)ccode32flat.o: src/acpi-dsdt.hex

 ####### Kconfig rules
 export HOSTCC             := $(CC)
 export CONFIG_SHELL       := sh
 export KCONFIG_AUTOHEADER := autoconf.h
 export KCONFIG_CONFIG     := $(CURDIR)/.config

 $(OUT)autoconf.h : $(KCONFIG_CONFIG)
 	$(Q)$(MAKE) silentoldconfig

 $(KCONFIG_CONFIG):
 	$(Q)$(MAKE) defconfig

 %onfig:
 	$(Q)mkdir -p $(OUT)/tools/kconfig/lxdialog
 	$(Q)mkdir -p $(OUT)/include/config
 	$(Q)$(MAKE) -C $(OUT) -f $(CURDIR)/tools/kconfig/Makefile srctree=$(CURDIR) src=tools/kconfig obj=tools/kconfig Q=$(Q) Kconfig=$(CURDIR)/src/Kconfig $@

 ####### Generic rules
 clean:
 	$(Q)rm -rf $(OUT)

 distclean: clean
 	$(Q)rm -f .config .config.old

 $(OUT):
 	$(Q)mkdir $@

 -include $(OUT)*.d
	# SeaBIOS build system
	#
	# Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
	#
	# This file may be distributed under the terms of the GNU LGPLv3 license.

	# Program version
	VERSION=1.6.3.2-$(shell date +"%Y%m%d_%H%M%S")-$(shell hostname)

	# Output directory
	OUT=out/

	# Source files
	SRCBOTH=misc.c stacks.c pmm.c output.c util.c block.c floppy.c ata.c mouse.c \
	kbd.c pci.c serial.c clock.c pic.c cdrom.c ps2port.c smp.c resume.c \
	pnpbios.c pirtable.c vgahooks.c ramdisk.c pcibios.c blockcmd.c \
	usb.c usb-uhci.c usb-ohci.c usb-ehci.c usb-hid.c usb-msc.c \
	virtio-ring.c virtio-pci.c virtio-blk.c apm.c ahci.c
	SRC16=$(SRCBOTH) system.c disk.c font.c
	SRC32FLAT=$(SRCBOTH) post.c shadow.c memmap.c coreboot.c boot.c \
	acpi.c smm.c mptable.c smbios.c pciinit.c optionroms.c mtrr.c \
	lzmadecode.c bootsplash.c jpeg.c usb-hub.c paravirt.c \
	biostables.c xen.c bmp.c
	SRC32SEG=util.c output.c pci.c pcibios.c apm.c stacks.c

	cc-option = $(shell if test -z "`$(1) $(2) -S -o /dev/null -xc \
	/dev/null 2>&1`"; then echo "$(2)"; else echo "$(3)"; fi ;)

	# Default compiler flags
	COMMONCFLAGS = -I$(OUT) -Os -MD \
	-Wall -Wno-strict-aliasing -Wold-style-definition \
	$(call cc-option,$(CC),-Wtype-limits,) \
	-m32 -march=i386 -mregparm=3 -mpreferred-stack-boundary=2 \
	-mrtd -minline-all-stringops \
	-freg-struct-return -ffreestanding -fomit-frame-pointer \
	-fno-delete-null-pointer-checks \
	-ffunction-sections -fdata-sections -fno-common
	COMMONCFLAGS += $(call cc-option,$(CC),-nopie,)
	COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector,)
	COMMONCFLAGS += $(call cc-option,$(CC),-fno-stack-protector-all,)

	CFLAGS32FLAT = $(COMMONCFLAGS) -g -DMODE16=0 -DMODESEGMENT=0
	CFLAGSSEG = $(COMMONCFLAGS) -DMODESEGMENT=1 -fno-defer-pop \
	$(call cc-option,$(CC),-fno-jump-tables,-DMANUAL_NO_JUMP_TABLE) \
	$(call cc-option,$(CC),-fno-tree-switch-conversion,)
	CFLAGS32SEG = $(CFLAGSSEG) -DMODE16=0 -g
	CFLAGS16INC = $(CFLAGSSEG) -DMODE16=1 \
	$(call cc-option,$(CC),--param large-stack-frame=4,-fno-inline)
	CFLAGS16 = $(CFLAGS16INC) -g

	all: $(OUT) $(OUT)bios.bin

	# Run with "make V=1" to see the actual compile commands
	ifdef V
	Q=
	else
	Q=@
	MAKEFLAGS += --no-print-directory
	endif

	OBJCOPY=objcopy
	OBJDUMP=objdump
	STRIP=strip
	PYTHON=python

	.PHONY : all clean distclean FORCE

	vpath %.c src vgasrc
	vpath %.S src vgasrc

	################ Build rules

	# Verify the gcc configuration and test if -fwhole-program works.
	TESTGCC:=$(shell CC="$(CC)" LD="$(LD)" tools/test-gcc.sh)
	ifeq "$(TESTGCC)" "-1"
	$(error "Please upgrade GCC and/or binutils")
	endif

	ifndef COMPSTRAT
	COMPSTRAT=$(TESTGCC)
	endif

	# Do a whole file compile - three methods are supported.
	ifeq "$(COMPSTRAT)" "1"
	# First method - use -fwhole-program without -combine.
	define whole-compile
	@echo " Compiling whole program $3"
	$(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
	$(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -c $3.tmp.c -o $3
	endef
	else
	ifeq "$(COMPSTRAT)" "2"
	# Second menthod - don't use -fwhole-program at all.
	define whole-compile
	@echo " Compiling whole program $3"
	$(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
	$(Q)$(CC) $1 -c $3.tmp.c -o $3
	endef
	else
	# Third (and preferred) method - use -fwhole-program with -combine
	define whole-compile
	@echo " Compiling whole program $3"
	$(Q)$(CC) $1 -fwhole-program -DWHOLE_PROGRAM -combine -c $2 -o $3
	endef
	endif
	endif

	%.strip.o: %.o
	@echo " Stripping $@"
	$(Q)$(STRIP) $< -o $@

	$(OUT)%.s: %.c
	@echo " Compiling to assembler $@"
	$(Q)$(CC) $(CFLAGS16INC) -S -c $< -o $@

	$(OUT)%.lds: %.lds.S
	@echo " Precompiling $@"
	$(Q)$(CPP) -P -D__ASSEMBLY__ $< -o $@

	$(OUT)asm-offsets.s: $(OUT)autoconf.h

	$(OUT)asm-offsets.h: $(OUT)asm-offsets.s
	@echo " Generating offset file $@"
	$(Q)./tools/gen-offsets.sh $< $@


	$(OUT)ccode.16.s: $(OUT)autoconf.h ; $(call whole-compile, $(CFLAGS16) -S, $(addprefix src/, $(SRC16)),$@)

	$(OUT)code32seg.o: $(OUT)autoconf.h ; $(call whole-compile, $(CFLAGS32SEG), $(addprefix src/, $(SRC32SEG)),$@)

	$(OUT)ccode32flat.o: $(OUT)autoconf.h ; $(call whole-compile, $(CFLAGS32FLAT), $(addprefix src/, $(SRC32FLAT)),$@)

	$(OUT)code16.o: romlayout.S $(OUT)ccode.16.s $(OUT)asm-offsets.h
	@echo " Compiling (16bit) $@"
	$(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ $< -o $@

	$(OUT)romlayout16.lds: $(OUT)ccode32flat.o $(OUT)code32seg.o $(OUT)code16.o tools/layoutrom.py
	@echo " Building ld scripts (version \"$(VERSION)\")"
	$(Q)echo 'const char VERSION[] = "$(VERSION)";' > $(OUT)version.c
	$(Q)$(CC) $(CFLAGS32FLAT) -c $(OUT)version.c -o $(OUT)version.o
	$(Q)$(LD) -melf_i386 -r $(OUT)ccode32flat.o $(OUT)version.o -o $(OUT)code32flat.o
	$(Q)$(OBJDUMP) -thr $(OUT)code32flat.o > $(OUT)code32flat.o.objdump
	$(Q)$(OBJDUMP) -thr $(OUT)code32seg.o > $(OUT)code32seg.o.objdump
	$(Q)$(OBJDUMP) -thr $(OUT)code16.o > $(OUT)code16.o.objdump
	$(Q)$(PYTHON) ./tools/layoutrom.py $(OUT)code16.o.objdump $(OUT)code32seg.o.objdump $(OUT)code32flat.o.objdump $(OUT)romlayout16.lds $(OUT)romlayout32seg.lds $(OUT)romlayout32flat.lds

	# These are actually built by tools/layoutrom.py above, but by pulling them
	# into an extra rule we prevent make -j from spawning layoutrom.py 4 times.
	$(OUT)romlayout32seg.lds $(OUT)romlayout32flat.lds $(OUT)code32flat.o: $(OUT)romlayout16.lds

	$(OUT)rom16.o: $(OUT)code16.o $(OUT)romlayout16.lds
	@echo " Linking $@"
	$(Q)$(LD) -T $(OUT)romlayout16.lds $< -o $@

	$(OUT)rom32seg.o: $(OUT)code32seg.o $(OUT)romlayout32seg.lds
	@echo " Linking $@"
	$(Q)$(LD) -T $(OUT)romlayout32seg.lds $< -o $@

	$(OUT)rom.o: $(OUT)rom16.strip.o $(OUT)rom32seg.strip.o $(OUT)code32flat.o $(OUT)romlayout32flat.lds
	@echo " Linking $@"
	$(Q)$(LD) -T $(OUT)romlayout32flat.lds $(OUT)rom16.strip.o $(OUT)rom32seg.strip.o $(OUT)code32flat.o -o $@

	$(OUT)bios.bin.elf $(OUT)bios.bin: $(OUT)rom.o tools/checkrom.py
	@echo " Prepping $@"
	$(Q)$(OBJDUMP) -thr $< > $<.objdump
	$(Q)$(OBJCOPY) -O binary $< $(OUT)bios.bin.raw
	$(Q)$(PYTHON) ./tools/checkrom.py $<.objdump $(OUT)bios.bin.raw $(OUT)bios.bin
	$(Q)$(STRIP) -R .comment $< -o $(OUT)bios.bin.elf


	################ VGA build rules

	# VGA src files
	SRCVGA=src/output.c src/util.c vgasrc/vga.c vgasrc/vgafb.c vgasrc/vgaio.c \
	vgasrc/vgatables.c vgasrc/vgafonts.c vgasrc/clext.c

	$(OUT)vgaccode.16.s: $(OUT)autoconf.h ; $(call whole-compile, $(CFLAGS16) -S -Isrc, $(SRCVGA),$@)

	$(OUT)vgalayout16.o: vgaentry.S $(OUT)vgaccode.16.s $(OUT)asm-offsets.h
	@echo " Compiling (16bit) $@"
	$(Q)$(CC) $(CFLAGS16INC) -c -D__ASSEMBLY__ -Isrc $< -o $@

	$(OUT)vgarom.o: $(OUT)vgalayout16.o $(OUT)vgalayout.lds
	@echo " Linking $@"
	$(Q)$(LD) --gc-sections -T $(OUT)vgalayout.lds $(OUT)vgalayout16.o -o $@

	$(OUT)vgabios.bin.raw: $(OUT)vgarom.o
	@echo " Extracting binary $@"
	$(Q)$(OBJCOPY) -O binary $< $@

	$(OUT)vgabios.bin: $(OUT)vgabios.bin.raw tools/buildrom.py
	@echo " Finalizing rom $@"
	$(Q)$(PYTHON) ./tools/buildrom.py $< $@

	####### dsdt build rules
	src/%.hex: src/%.dsl
	@echo "Compiling DSDT"
	$(Q)cpp -P $< > $(OUT)$*.dsl.i
	$(Q)iasl -tc -p $(OUT)$* $(OUT)$*.dsl.i
	$(Q)cp $(OUT)$*.hex $@

	$(OUT)ccode32flat.o: src/acpi-dsdt.hex

	####### Kconfig rules
	export HOSTCC := $(CC)
	export CONFIG_SHELL := sh
	export KCONFIG_AUTOHEADER := autoconf.h
	export KCONFIG_CONFIG := $(CURDIR)/.config

	$(OUT)autoconf.h : $(KCONFIG_CONFIG)
	$(Q)$(MAKE) silentoldconfig

	$(KCONFIG_CONFIG):
	$(Q)$(MAKE) defconfig

	%onfig:
	$(Q)mkdir -p $(OUT)/tools/kconfig/lxdialog
	$(Q)mkdir -p $(OUT)/include/config
	$(Q)$(MAKE) -C $(OUT) -f $(CURDIR)/tools/kconfig/Makefile srctree=$(CURDIR) src=tools/kconfig obj=tools/kconfig Q=$(Q) Kconfig=$(CURDIR)/src/Kconfig $@

	####### Generic rules
	clean:
	$(Q)rm -rf $(OUT)

	distclean: clean
	$(Q)rm -f .config .config.old

	$(OUT):
	$(Q)mkdir $@

	-include $(OUT)*.d