--- /dev/null
+# 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-$(shell date +"%Y%m%d_%H%M%S")-$(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) $(OUT)bios.bin
+
+# Run with "make V=1" to see the actual compile commands
+ifdef V
+Q=
+else
+Q=@
+MAKEFLAGS += --no-print-directory
+endif
+
+OBJCOPY=objcopy
+OBJDUMP=objdump
+STRIP=strip
+
+.PHONY : all clean distclean FORCE
+
+vpath %.c src vgasrc
+vpath %.S src vgasrc
+
+################ Build rules
+
+# Verify the gcc configuration and test if -fwhole-program works.
+TESTGCC:=$(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)./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)./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)./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
