[PATCH] x86: Drop cc-options call for all options supported in gcc 3.2+
[linux-2.6.git] / 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" cleaning up for this architecture.
7 #
8 # This file is subject to the terms and conditions of the GNU General Public
9 # License.  See the file "COPYING" in the main directory of this archive
10 # for more details.
11 #
12 # Copyright (C) 1994 by Linus Torvalds
13 #
14 # 19990713  Artur Skawina <skawina@geocities.com>
15 #           Added '-march' and '-mpreferred-stack-boundary' support
16 #
17 # 20050320  Kianusch Sayah Karadji <kianusch@sk-tech.net>
18 #           Added support for GEODE CPU
19
20 HAS_BIARCH      := $(call cc-option-yn, -m32)
21 ifeq ($(HAS_BIARCH),y)
22 AS              := $(AS) --32
23 LD              := $(LD) -m elf_i386
24 CC              := $(CC) -m32
25 endif
26
27 LDFLAGS         := -m elf_i386
28 OBJCOPYFLAGS    := -O binary -R .note -R .comment -S
29 ifdef CONFIG_RELOCATABLE
30 LDFLAGS_vmlinux := --emit-relocs
31 endif
32 CHECKFLAGS      += -D__i386__
33
34 CFLAGS += -pipe -msoft-float -mregparm=3 -freg-struct-return
35
36 # prevent gcc from keeping the stack 16 byte aligned
37 CFLAGS += -mpreferred-stack-boundary=4
38
39 # CPU-specific tuning. Anything which can be shared with UML should go here.
40 include $(srctree)/arch/i386/Makefile.cpu
41
42 # temporary until string.h is fixed
43 cflags-y += -ffreestanding
44
45 # this works around some issues with generating unwind tables in older gccs
46 # newer gccs do it by default
47 cflags-y += -maccumulate-outgoing-args
48
49 # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
50 # a lot more stack due to the lack of sharing of stacklots:
51 CFLAGS                          += $(shell if [ $(call cc-version) -lt 0400 ] ; then echo $(call cc-option,-fno-unit-at-a-time); fi ;)
52
53 # do binutils support CFI?
54 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
55 AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_endproc,-DCONFIG_AS_CFI=1,)
56
57 # is .cfi_signal_frame supported too?
58 cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
59 AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,)
60
61 CFLAGS += $(cflags-y)
62
63 # Default subarch .c files
64 mcore-y  := mach-default
65
66 # Voyager subarch support
67 mflags-$(CONFIG_X86_VOYAGER)    := -Iinclude/asm-i386/mach-voyager
68 mcore-$(CONFIG_X86_VOYAGER)     := mach-voyager
69
70 # VISWS subarch support
71 mflags-$(CONFIG_X86_VISWS)      := -Iinclude/asm-i386/mach-visws
72 mcore-$(CONFIG_X86_VISWS)       := mach-visws
73
74 # NUMAQ subarch support
75 mflags-$(CONFIG_X86_NUMAQ)      := -Iinclude/asm-i386/mach-numaq
76 mcore-$(CONFIG_X86_NUMAQ)       := mach-default
77
78 # BIGSMP subarch support
79 mflags-$(CONFIG_X86_BIGSMP)     := -Iinclude/asm-i386/mach-bigsmp
80 mcore-$(CONFIG_X86_BIGSMP)      := mach-default
81
82 #Summit subarch support
83 mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-i386/mach-summit
84 mcore-$(CONFIG_X86_SUMMIT)  := mach-default
85
86 # generic subarchitecture
87 mflags-$(CONFIG_X86_GENERICARCH) := -Iinclude/asm-i386/mach-generic
88 mcore-$(CONFIG_X86_GENERICARCH) := mach-default
89 core-$(CONFIG_X86_GENERICARCH) += arch/i386/mach-generic/
90
91 # ES7000 subarch support
92 mflags-$(CONFIG_X86_ES7000)     := -Iinclude/asm-i386/mach-es7000
93 mcore-$(CONFIG_X86_ES7000)      := mach-default
94 core-$(CONFIG_X86_ES7000)       := arch/i386/mach-es7000/
95
96 # default subarch .h files
97 mflags-y += -Iinclude/asm-i386/mach-default
98
99 head-y := arch/i386/kernel/head.o arch/i386/kernel/init_task.o
100
101 libs-y                                  += arch/i386/lib/
102 core-y                                  += arch/i386/kernel/ \
103                                            arch/i386/mm/ \
104                                            arch/i386/$(mcore-y)/ \
105                                            arch/i386/crypto/
106 drivers-$(CONFIG_MATH_EMULATION)        += arch/i386/math-emu/
107 drivers-$(CONFIG_PCI)                   += arch/i386/pci/
108 # must be linked after kernel/
109 drivers-$(CONFIG_OPROFILE)              += arch/i386/oprofile/
110 drivers-$(CONFIG_PM)                    += arch/i386/power/
111
112 CFLAGS += $(mflags-y)
113 AFLAGS += $(mflags-y)
114
115 boot := arch/i386/boot
116
117 PHONY += zImage bzImage compressed zlilo bzlilo \
118          zdisk bzdisk fdimage fdimage144 fdimage288 isoimage install
119
120 all: bzImage
121
122 # KBUILD_IMAGE specify target image being built
123                     KBUILD_IMAGE := $(boot)/bzImage
124 zImage zlilo zdisk: KBUILD_IMAGE := arch/i386/boot/zImage
125
126 zImage bzImage: vmlinux
127         $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
128
129 compressed: zImage
130
131 zlilo bzlilo: vmlinux
132         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo
133
134 zdisk bzdisk: vmlinux
135         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk
136
137 fdimage fdimage144 fdimage288 isoimage: vmlinux
138         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@
139
140 install:
141         $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
142
143 archclean:
144         $(Q)$(MAKE) $(clean)=arch/i386/boot
145
146 define archhelp
147   echo  '* bzImage      - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
148   echo  '  install      - Install kernel using'
149   echo  '                  (your) ~/bin/installkernel or'
150   echo  '                  (distribution) /sbin/installkernel or'
151   echo  '                  install to $$(INSTALL_PATH) and run lilo'
152   echo  '  bzdisk       - Create a boot floppy in /dev/fd0'
153   echo  '  fdimage      - Create a boot floppy image'
154   echo  '  isoimage     - Create a boot CD-ROM image'
155 endef
156
157 CLEAN_FILES += arch/$(ARCH)/boot/fdimage \
158                arch/$(ARCH)/boot/image.iso \
159                arch/$(ARCH)/boot/mtools.conf