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## -----------------------------------------------------------------------
##
## Copyright 2001-2008 H. Peter Anvin - All Rights Reserved
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation, Inc., 53 Temple Place Ste 330,
## Boston MA 02111-1307, USA; either version 2 of the License, or
## (at your option) any later version; incorporated herein by reference.
##
## -----------------------------------------------------------------------
topdir = ..
-include $(topdir)/version.mk
TMPFILE = $(shell mktemp /tmp/gcc_ok.XXXXXX)
CC = gcc
gcc_ok = $(shell tmpf=$(TMPFILE); if $(CC) $(1) -c -x c /dev/null -o $$tmpf 2>/dev/null; \
then echo $(1); else echo $(2); fi; rm -f $$tmpf)
M32 := $(call gcc_ok,-m32,)
ALIGN := $(call gcc_ok,-falign-functions=0 -falign-jumps=0 -falign-loops=0,-malign-functions=0 -malign-jumps=0 -malign-loops=0)
FREE := $(call gcc_ok,-ffreestanding,) $(call gcc_ok,-fno-stack-protector,)
CFLAGS = $(M32) $(FREE) -g -W -Wall -Wno-sign-compare \
-Os -fomit-frame-pointer -march=i386 -mregparm=3 $(ALIGN) \
-DDATE='"$(DATE)"'
SFLAGS = $(M32) -march=i386 -D__ASSEMBLY__
LDFLAGS = $(M32) -g
INCLUDE = -I../com32/include
LD = ld -m elf_i386
NASM = nasm
NASMOPT = -O9999
NFLAGS = -dDATE='"$(DATE)"' -dWITH_EDD
NINCLUDE =
OBJCOPY = objcopy
PERL = perl
SRCS = $(wildcard *.asm *.c *.h)
# The DATE is set on the make command line when building binaries for
# official release. Otherwise, substitute a hex string that is pretty much
# guaranteed to be unique to be unique from build to build.
ifndef HEXDATE
HEXDATE := $(shell $(PERL) ../now.pl $(SRCS))
endif
ifndef DATE
DATE := $(shell sh ../gen-id.sh $(VERSION) $(HEXDATE))
endif
# Important: init.o16 must be first!!
OBJS16 = init.o16 init32.o
OBJS32 = start32.o setup.o msetup.o e820func.o conio.o memcpy.o memset.o \
unzip.o memdisk.o
CSRC = setup.c msetup.c e820func.c conio.c unzip.c
SSRC = start32.S memcpy.S memset.S
NASMSRC = memdisk.asm memdisk16.asm
all: memdisk # e820test
# tidy, clean removes everything except the final binary
tidy dist:
rm -f *.o *.s *.o16 *.s16 *.bin *.lst *.elf e820test
clean: tidy
# spotless also removes the product binary
spotless: clean
rm -f memdisk .depend
%.o: %.asm
$(NASM) $(NASMOPT) $(NFLAGS) $(NINCLUDE) -f elf -l $*.lst -o $@ $<
%.o: %.s
$(CC) $(SFLAGS) -c -o $@ $<
%.o: %.S
$(CC) $(INCLUDE) $(SFLAGS) -c -o $@ $<
%.o16: %.s16
$(CC) $(SFLAGS) -x assembler -c -o $@ $<
%.o: %.c
$(CC) $(INCLUDE) $(CFLAGS) -c -o $@ $<
%.s16: %.s
echo '.code16gcc' | cat - $< > $@
%.s: %.S
$(CC) $(INCLUDE) $(SFLAGS) -E -o $@ $<
%.s16: %.S16
$(CC) $(INCLUDE) $(SFLAGS) -x assembler-with-cpp -E -o $@ $<
%.s: %.c
$(CC) $(INCLUDE) $(CFLAGS) -S -o $@ $<
%.i: %.c
$(CC) $(INCLUDE) $(CFLAGS) -E -o $@ $<
# Cancel default rule
%.o: %.c
%.bin: %.asm
$(NASM) -f bin $(NASMOPT) $(NFLAGS) $(NINCLUDE) -o $@ -l $*.lst $<
memdisk16.elf: $(OBJS16)
$(LD) -Ttext 0 -o $@ $^
memdisk32.elf: $(OBJS32)
$(LD) -Ttext 0x100000 -o $@ $^
%.bin: %.elf
$(OBJCOPY) -O binary $< $@
memdisk: memdisk16.bin memdisk32.bin postprocess.pl
$(PERL) postprocess.pl $@ memdisk16.bin memdisk32.bin
e820test: e820func.o msetup.o e820test.o memdisk.o
$(CC) $(LDFLAGS) -o $@ $^
memdisk.o: memdisk.bin
$(LD) -r -b binary -o $@ $<
.depend:
rm -f .depend
for csrc in *.c ; do $(CC) $(INCLUDE) $(CFLAGS) -MM $$csrc >> .depend ; done
for ssrc in *.S ; do $(CC) $(INCLUDE) $(SFLAGS) -MM $$ssrc >> .depend ; done
for nsrc in $(NASMSRC) ; do $(NASM) -DDEPEND $(NINCLUDE) -o `echo $$nsrc | sed -e 's/\.asm/\.bin/'` -M $$nsrc >> .depend ; done
depend:
rm -f .depend
$(MAKE) .depend
# This file contains the version number, so add a dependency for it
setup.s: ../version
# Include dependencies file
include .depend
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