mbr/Makefile

   1 ## -----------------------------------------------------------------------
   2 ##
   3 ##   Copyright 2007 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 #
  14 # Makefile for MBR
  15 #
  16
  17 gcc_ok   = $(shell if gcc $(1) -c -x c /dev/null -o /dev/null 2>/dev/null; \
  18                    then echo $(1); else echo $(2); fi)
  19
  20 M32       := $(call gcc_ok,-m32,) $(call gcc_ok,-ffreestanding,) $(call gcc_ok,-fno-stack-protector)
  21
  22 CC         = gcc
  23 LD         = ld -m elf_i386
  24 SFLAGS     = $(M32) -march=i386
  25 OBJCOPY    = objcopy
  26 PERL       = perl
  27
  28 .SUFFIXES: .S .s .o .elf
  29
  30 all:    mbr.bin
  31
  32 .PRECIOUS: %.o
  33 %.o: %.S
  34         $(CC) $(SFLAGS) -Wa,-a=$*.lst -c -o $@ $<
  35
  36 mbr.elf: mbr.o mbr.ld
  37         $(LD) -T mbr.ld -e _start -o $@ $<
  38
  39 mbr.bin: mbr.elf checksize.pl
  40         $(OBJCOPY) -O binary $< $@
  41         $(PERL) checksize.pl mbr.bin 440
  42
  43 tidy:
  44         rm -f *.o *.elf *.lst
  45
  46 clean: tidy
  47         rm -f *.bin