arch/i386/Makefile

   1 #
   2 # i386/Makefile
   3 #
   4 # This file is included by the global makefile so that you can add your own
   5 # architecture-specific flags and dependencies. Remember to do have actions
   6 # for "archclean" and "archdep" for cleaning up and making dependencies for
   7 # this architecture
   8 #
   9 # This file is subject to the terms and conditions of the GNU General Public
  10 # License.  See the file "COPYING" in the main directory of this archive
  11 # for more details.
  12 #
  13 # Copyright (C) 1994 by Linus Torvalds
  14 #
  15 # 19990713  Artur Skawina <skawina@geocities.com>
  16 #           Added '-march' and '-mpreferred-stack-boundary' support
  17 #
  18
  19 LD=$(CROSS_COMPILE)ld -m elf_i386
  20 OBJCOPY=$(CROSS_COMPILE)objcopy -O binary -R .note -R .comment -S
  21 LDFLAGS=-e stext
  22 LINKFLAGS =-T $(TOPDIR)/arch/i386/vmlinux.lds $(LDFLAGS)
  23
  24 CFLAGS += -pipe
  25
  26 # only work around strength reduction bug(s) on older gcc versions
  27 CFLAGS += $(shell if ! $(CC) -march=i486 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-fno-strength-reduce"; fi)
  28
  29 # prevent gcc from keeping the stack 16 byte aligned
  30 CFLAGS += $(shell if $(CC) -mpreferred-stack-boundary=2 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-mpreferred-stack-boundary=2"; fi)
  31
  32 ifdef CONFIG_M386
  33 CFLAGS += $(shell if $(CC) -march=i386 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=i386"; else echo "-m386"; fi)
  34 endif
  35
  36 ifdef CONFIG_M486
  37 CFLAGS += $(shell if $(CC) -march=i486 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=i486"; else echo "-m486"; fi)
  38 endif
  39
  40 ifdef CONFIG_M586
  41 CFLAGS += $(shell if $(CC) -march=i586 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=i586"; fi)
  42 endif
  43
  44 ifdef CONFIG_M586TSC
  45 CFLAGS += $(shell if $(CC) -march=i586 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=i586"; fi)
  46 endif
  47
  48 ifdef CONFIG_M586MMX
  49 CFLAGS += $(shell if $(CC) -march=i586 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=i586"; fi)
  50 endif
  51
  52 ifdef CONFIG_M686
  53 CFLAGS += $(shell if $(CC) -march=i686 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=i686"; fi)
  54 endif
  55
  56 ifdef CONFIG_M686FXSR
  57 CFLAGS += $(shell if $(CC) -march=i686 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=i686"; fi)
  58 endif
  59
  60 ifdef CONFIG_MK6
  61 CFLAGS += $(shell if $(CC) -march=k6 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=k6"; fi)
  62 endif
  63
  64 ifdef CONFIG_MK7
  65 CFLAGS += $(shell if $(CC) -march=athlon -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=athlon"; else  if $(CC) -march=i686 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=i686 -malign-functions=4";  fi fi)
  66 endif
  67
  68 ifdef CONFIG_MCRUSOE
  69 CFLAGS += $(shell if $(CC) -march=i586 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=i586"; fi)
  70 endif
  71
  72 ifdef CONFIG_MWINCHIPC6
  73 CFLAGS += $(shell if $(CC) -march=i686 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=i686"; fi)
  74 endif
  75
  76 ifdef CONFIG_MWINCHIP2
  77 CFLAGS += $(shell if $(CC) -march=i686 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=i686"; fi)
  78 endif
  79
  80 ifdef CONFIG_MWINCHIP3D
  81 CFLAGS += $(shell if $(CC) -march=i686 -S -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-march=i686"; fi)
  82 endif
  83
  84 HEAD := arch/i386/kernel/head.o arch/i386/kernel/init_task.o
  85
  86 SUBDIRS += arch/i386/kernel arch/i386/mm arch/i386/lib
  87 CORE_FILES := arch/i386/kernel/kernel.o arch/i386/mm/mm.o $(CORE_FILES)
  88 LIBS := $(TOPDIR)/arch/i386/lib/lib.a $(LIBS) $(TOPDIR)/arch/i386/lib/lib.a
  89
  90 ifdef CONFIG_MATH_EMULATION
  91 SUBDIRS += arch/i386/math-emu
  92 DRIVERS += arch/i386/math-emu/math.a
  93 endif
  94
  95 arch/i386/kernel: dummy
  96         $(MAKE) linuxsubdirs SUBDIRS=arch/i386/kernel
  97
  98 arch/i386/mm: dummy
  99         $(MAKE) linuxsubdirs SUBDIRS=arch/i386/mm
 100
 101 MAKEBOOT = $(MAKE) -C arch/$(ARCH)/boot
 102
 103 vmlinux: arch/i386/vmlinux.lds
 104
 105 FORCE: ;
 106
 107 .PHONY: zImage bzImage compressed zlilo bzlilo zdisk bzdisk install \
 108                 clean archclean archmrproper archdep
 109
 110 zImage: vmlinux
 111         @$(MAKEBOOT) zImage
 112
 113 bzImage: vmlinux
 114         @$(MAKEBOOT) bzImage
 115
 116 compressed: zImage
 117
 118 zlilo: vmlinux
 119         @$(MAKEBOOT) BOOTIMAGE=zImage zlilo
 120
 121 tmp:
 122         @$(MAKEBOOT) BOOTIMAGE=bzImage zlilo
 123 bzlilo: vmlinux
 124         @$(MAKEBOOT) BOOTIMAGE=bzImage zlilo
 125
 126 zdisk: vmlinux
 127         @$(MAKEBOOT) BOOTIMAGE=zImage zdisk
 128
 129 bzdisk: vmlinux
 130         @$(MAKEBOOT) BOOTIMAGE=bzImage zdisk
 131
 132 install: vmlinux
 133         @$(MAKEBOOT) BOOTIMAGE=bzImage install
 134
 135 archclean:
 136         @$(MAKEBOOT) clean
 137
 138 archmrproper:
 139
 140 archdep:
 141         @$(MAKEBOOT) dep