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kbuild: change kbuild to not rely on incorrect GNU make behavior
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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#
47137419 17# 20050320 Kianusch Sayah Karadji <kianusch@sk-tech.net>
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18# Added support for GEODE CPU
19
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20HAS_BIARCH := $(call cc-option-yn, -m32)
21ifeq ($(HAS_BIARCH),y)
22AS := $(AS) --32
23LD := $(LD) -m elf_i386
24CC := $(CC) -m32
25endif
26
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27LDFLAGS := -m elf_i386
28OBJCOPYFLAGS := -O binary -R .note -R .comment -S
29LDFLAGS_vmlinux :=
30CHECKFLAGS += -D__i386__
31
32CFLAGS += -pipe -msoft-float
33
34# prevent gcc from keeping the stack 16 byte aligned
35CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2)
36
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37# CPU-specific tuning. Anything which can be shared with UML should go here.
38include $(srctree)/arch/i386/Makefile.cpu
1da177e4 39
6aa4c0ef 40cflags-$(CONFIG_REGPARM) += -mregparm=3
1da177e4 41
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42# Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
43# a lot more stack due to the lack of sharing of stacklots:
44CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then echo $(call cc-option,-fno-unit-at-a-time); fi ;)
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45
46CFLAGS += $(cflags-y)
47
48# Default subarch .c files
49mcore-y := mach-default
50
51# Voyager subarch support
52mflags-$(CONFIG_X86_VOYAGER) := -Iinclude/asm-i386/mach-voyager
53mcore-$(CONFIG_X86_VOYAGER) := mach-voyager
54
55# VISWS subarch support
56mflags-$(CONFIG_X86_VISWS) := -Iinclude/asm-i386/mach-visws
57mcore-$(CONFIG_X86_VISWS) := mach-visws
58
59# NUMAQ subarch support
60mflags-$(CONFIG_X86_NUMAQ) := -Iinclude/asm-i386/mach-numaq
61mcore-$(CONFIG_X86_NUMAQ) := mach-default
62
63# BIGSMP subarch support
64mflags-$(CONFIG_X86_BIGSMP) := -Iinclude/asm-i386/mach-bigsmp
65mcore-$(CONFIG_X86_BIGSMP) := mach-default
66
67#Summit subarch support
68mflags-$(CONFIG_X86_SUMMIT) := -Iinclude/asm-i386/mach-summit
69mcore-$(CONFIG_X86_SUMMIT) := mach-default
70
71# generic subarchitecture
72mflags-$(CONFIG_X86_GENERICARCH) := -Iinclude/asm-i386/mach-generic
73mcore-$(CONFIG_X86_GENERICARCH) := mach-default
74core-$(CONFIG_X86_GENERICARCH) += arch/i386/mach-generic/
75
76# ES7000 subarch support
77mflags-$(CONFIG_X86_ES7000) := -Iinclude/asm-i386/mach-es7000
78mcore-$(CONFIG_X86_ES7000) := mach-default
79core-$(CONFIG_X86_ES7000) := arch/i386/mach-es7000/
80
81# default subarch .h files
82mflags-y += -Iinclude/asm-i386/mach-default
83
84head-y := arch/i386/kernel/head.o arch/i386/kernel/init_task.o
85
86libs-y += arch/i386/lib/
87core-y += arch/i386/kernel/ \
88 arch/i386/mm/ \
89 arch/i386/$(mcore-y)/ \
90 arch/i386/crypto/
91drivers-$(CONFIG_MATH_EMULATION) += arch/i386/math-emu/
92drivers-$(CONFIG_PCI) += arch/i386/pci/
93# must be linked after kernel/
94drivers-$(CONFIG_OPROFILE) += arch/i386/oprofile/
95drivers-$(CONFIG_PM) += arch/i386/power/
96
97CFLAGS += $(mflags-y)
98AFLAGS += $(mflags-y)
99
100boot := arch/i386/boot
101
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102PHONY += zImage bzImage compressed zlilo bzlilo \
103 zdisk bzdisk fdimage fdimage144 fdimage288 install
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104
105all: bzImage
106
107# KBUILD_IMAGE specify target image being built
108 KBUILD_IMAGE := $(boot)/bzImage
109zImage zlilo zdisk: KBUILD_IMAGE := arch/i386/boot/zImage
110
111zImage bzImage: vmlinux
112 $(Q)$(MAKE) $(build)=$(boot) $(KBUILD_IMAGE)
113
114compressed: zImage
115
116zlilo bzlilo: vmlinux
117 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zlilo
118
119zdisk bzdisk: vmlinux
120 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) zdisk
121
122fdimage fdimage144 fdimage288: vmlinux
123 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) $@
124
0d20babd 125install:
2cacb3da 126 $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
1da177e4 127
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128archclean:
129 $(Q)$(MAKE) $(clean)=arch/i386/boot
130
131define archhelp
132 echo '* bzImage - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
133 echo ' install - Install kernel using'
134 echo ' (your) ~/bin/installkernel or'
135 echo ' (distribution) /sbin/installkernel or'
136 echo ' install to $$(INSTALL_PATH) and run lilo'
137 echo ' bzdisk - Create a boot floppy in /dev/fd0'
138 echo ' fdimage - Create a boot floppy image'
139endef
140
141CLEAN_FILES += arch/$(ARCH)/boot/fdimage arch/$(ARCH)/boot/mtools.conf