memdisk/Makefile

   1 ## -----------------------------------------------------------------------
   2 ##
   3 ##   Copyright 2001-2008 H. Peter Anvin - All Rights Reserved
   4 ##
   5 ##   This program is free software; you can redistribute it and/or modify
   6 ##   it under the terms of the GNU General Public License as published by
   7 ##   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
   8 ##   Boston MA 02111-1307, USA; either version 2 of the License, or
   9 ##   (at your option) any later version; incorporated herein by reference.
  10 ##
  11 ## -----------------------------------------------------------------------
  12
  13 VERSION := $(shell cat ../version)
  14
  15 TMPFILE = $(shell mktemp /tmp/gcc_ok.XXXXXX)
  16
  17 gcc_ok   = $(shell tmpf=$(TMPFILE); if $(CC) $(1) -c -x c /dev/null -o $$tmpf 2>/dev/null; \
  18                    then echo $(1); else echo $(2); fi; rm -f $$tmpf)
  19
  20 M32     := $(call gcc_ok,-m32,)
  21 ALIGN   := $(call gcc_ok,-falign-functions=0 -falign-jumps=0 -falign-loops=0,-malign-functions=0 -malign-jumps=0 -malign-loops=0)
  22 FREE    := $(call gcc_ok,-ffreestanding,) $(call gcc_ok,-fno-stack-protector,)
  23
  24 CC       = gcc
  25 CFLAGS   =  $(M32) $(FREE) -g -W -Wall -Wno-sign-compare \
  26            -Os -fomit-frame-pointer -march=i386 $(ALIGN) \
  27            -DVERSION='"$(VERSION)"' -DDATE='"$(DATE)"'
  28 SFLAGS   = $(M32) -march=i386 -D__ASSEMBLY__
  29 LDFLAGS  = $(M32) -g
  30 INCLUDE  = -I../com32/include
  31 LD       = ld -m elf_i386
  32 NASM     = nasm
  33 NASMOPT  = -O9999
  34 NFLAGS   = -dVERSION='"$(VERSION)"' -dDATE='"$(DATE)"' -dWITH_EDD
  35 NINCLUDE =
  36 OBJCOPY  = objcopy
  37 PERL     = perl
  38
  39 # Important: init.o16 must be first!!
  40 OBJS16   = init.o16 init32.o
  41 OBJS32   = start32.o setup.o msetup.o e820func.o conio.o memcpy.o memset.o \
  42            unzip.o memdisk.o
  43
  44 CSRC     = setup.c msetup.c e820func.c conio.c unzip.c
  45 SSRC     = start32.S memcpy.S memset.S
  46 NASMSRC  = memdisk.asm memdisk16.asm
  47
  48 all: memdisk # e820test
  49
  50 # tidy, clean removes everything except the final binary
  51 tidy:
  52         rm -f *.o *.s *.o16 *.s16 *.bin *.lst *.elf e820test
  53
  54 clean: tidy
  55
  56 # spotless also removes the product binary
  57 spotless: clean
  58         rm -f memdisk .depend
  59
  60 %.o: %.asm
  61         $(NASM) $(NASMOPT) $(NFLAGS) $(NINCLUDE) -f elf -l $*.lst -o $@ $<
  62
  63 %.o: %.s
  64         $(CC) $(SFLAGS) -c -o $@ $<
  65
  66 %.o: %.S
  67         $(CC) $(INCLUDE) $(SFLAGS) -c -o $@ $<
  68
  69 %.o16: %.s16
  70         $(CC) $(SFLAGS) -x assembler -c -o $@ $<
  71
  72 %.o: %.c
  73         $(CC) $(INCLUDE) $(CFLAGS) -c -o $@ $<
  74
  75 %.s16: %.s
  76         echo '.code16gcc' | cat - $< > $@
  77
  78 %.s: %.S
  79         $(CC) $(INCLUDE) $(SFLAGS) -E -o $@ $<
  80
  81 %.s16: %.S16
  82         $(CC) $(INCLUDE) $(SFLAGS) -x assembler-with-cpp -E -o $@ $<
  83
  84 %.s: %.c
  85         $(CC) $(INCLUDE) $(CFLAGS) -S -o $@ $<
  86
  87 %.i: %.c
  88         $(CC) $(INCLUDE) $(CFLAGS) -E -o $@ $<
  89
  90 # Cancel default rule
  91 %.o: %.c
  92
  93 %.bin: %.asm
  94         $(NASM) -f bin $(NASMOPT) $(NFLAGS) $(NINCLUDE) -o $@ -l $*.lst $<
  95
  96 memdisk16.elf: $(OBJS16)
  97         $(LD) -Ttext 0 -o $@ $^
  98
  99 memdisk32.elf: $(OBJS32)
 100         $(LD) -Ttext 0x100000 -o $@ $^
 101
 102 %.bin: %.elf
 103         $(OBJCOPY) -O binary $< $@
 104
 105 memdisk: memdisk16.bin memdisk32.bin postprocess.pl
 106         $(PERL) postprocess.pl $@ memdisk16.bin memdisk32.bin
 107
 108 e820test: e820func.o msetup.o e820test.o memdisk.o
 109         $(CC) $(LDFLAGS) -o $@ $^
 110
 111 memdisk.o: memdisk.bin
 112         $(LD) -r -b binary -o $@ $<
 113
 114 .depend:
 115         rm -f .depend
 116         for csrc in *.c ; do $(CC) $(INCLUDE) $(CFLAGS) -MM $$csrc >> .depend ; done
 117         for ssrc in *.S ; do $(CC) $(INCLUDE) $(SFLAGS) -MM $$ssrc >> .depend ; done
 118         for nsrc in $(NASMSRC) ; do $(NASM) -DDEPEND $(NINCLUDE) -o `echo $$nsrc | sed -e 's/\.asm/\.bin/'` -M $$nsrc >> .depend ; done
 119
 120 depend:
 121         rm -f .depend
 122         $(MAKE) .depend
 123
 124 # This file contains the version number, so add a dependency for it
 125 setup.s: ../version
 126
 127 # Include dependencies file
 128 include .depend