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
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
13 # Copyright (C) 1994 by Linus Torvalds
15 # 19990713 Artur Skawina <skawina@geocities.com>
16 # Added '-march' and '-mpreferred-stack-boundary' support
17 # 20000913 Pavel Machek <pavel@suse.cz>
18 # Converted for x86_64 architecture
19 # 20010105 Andi Kleen, add IA32 compiler.
20 # ....and later removed it again....
22 # $Id: Makefile,v 1.31 2002/03/22 15:56:07 ak Exp $
24 LDFLAGS
:= -m elf_x86_64
25 OBJCOPYFLAGS
:= -O binary
-R .note
-R .comment
-S
27 CHECKFLAGS
+= -D__x86_64__
-m64
31 cflags-
$(CONFIG_MK8
) += $(call cc-option
,-march
=k8
)
32 cflags-
$(CONFIG_MPSC
) += $(call cc-option
,-march
=nocona
)
33 # gcc doesn't support -march=core2 yet as of gcc 4.3, but I hope it
34 # will eventually. Use -mtune=generic as fallback
35 cflags-
$(CONFIG_MCORE2
) += \
36 $(call cc-option
,-march
=core2
,$(call cc-option
,-mtune
=generic
))
37 cflags-
$(CONFIG_GENERIC_CPU
) += $(call cc-option
,-mtune
=generic
)
40 cflags-y
+= -mno-red-zone
41 cflags-y
+= -mcmodel
=kernel
43 cflags-kernel-
$(CONFIG_REORDER
) += -ffunction-sections
44 # this makes reading assembly source easier, but produces worse code
45 # actually it makes the kernel smaller too.
46 cflags-y
+= -fno-reorder-blocks
47 cflags-y
+= -Wno-sign-compare
48 ifneq ($(CONFIG_UNWIND_INFO
),y
)
49 cflags-y
+= -fno-asynchronous-unwind-tables
51 ifneq ($(CONFIG_DEBUG_INFO
),y
)
52 # -fweb shrinks the kernel a bit, but the difference is very small
53 # it also messes up debugging, so don't use it for now.
54 #cflags-y += $(call cc-option,-fweb)
56 # -funit-at-a-time shrinks the kernel .text considerably
57 # unfortunately it makes reading oopses harder.
58 cflags-y
+= $(call cc-option
,-funit-at-a-time
)
59 # prevent gcc from generating any FP code by mistake
60 cflags-y
+= $(call cc-option
,-mno-sse
-mno-mmx
-mno-sse2
-mno-3dnow
,)
61 # this works around some issues with generating unwind tables in older gccs
62 # newer gccs do it by default
63 cflags-y
+= -maccumulate-outgoing-args
65 # do binutils support CFI?
66 cflags-y
+= $(call as-instr
,.cfi_startproc
\n.cfi_endproc
,-DCONFIG_AS_CFI
=1,)
67 AFLAGS
+= $(call as-instr
,.cfi_startproc
\n.cfi_endproc
,-DCONFIG_AS_CFI
=1,)
69 # is .cfi_signal_frame supported too?
70 cflags-y
+= $(call as-instr
,.cfi_startproc
\n.cfi_signal_frame
\n.cfi_endproc
,-DCONFIG_AS_CFI_SIGNAL_FRAME
=1,)
71 AFLAGS
+= $(call as-instr
,.cfi_startproc
\n.cfi_signal_frame
\n.cfi_endproc
,-DCONFIG_AS_CFI_SIGNAL_FRAME
=1,)
73 cflags-
$(CONFIG_CC_STACKPROTECTOR
) += $(shell $(CONFIG_SHELL
) $(srctree
)/scripts
/gcc-x86_64-has-stack-protector.sh
"$(CC)" -fstack-protector
)
74 cflags-
$(CONFIG_CC_STACKPROTECTOR_ALL
) += $(shell $(CONFIG_SHELL
) $(srctree
)/scripts
/gcc-x86_64-has-stack-protector.sh
"$(CC)" -fstack-protector-all
)
77 CFLAGS_KERNEL
+= $(cflags-kernel-y
)
80 head-y
:= arch
/x86_64
/kernel
/head.o arch
/x86_64
/kernel
/head64.o arch
/x86_64
/kernel
/init_task.o
82 libs-y
+= arch
/x86_64
/lib
/
83 core-y
+= arch
/x86_64
/kernel
/ \
86 core-
$(CONFIG_IA32_EMULATION
) += arch
/x86_64
/ia32
/
87 drivers-
$(CONFIG_PCI
) += arch
/x86_64
/pci
/
88 drivers-
$(CONFIG_OPROFILE
) += arch
/x86_64
/oprofile
/
90 boot
:= arch
/x86_64
/boot
92 PHONY
+= bzImage bzlilo
install archmrproper \
93 fdimage fdimage144 fdimage288 isoimage archclean
95 #Default target when executing "make"
98 BOOTIMAGE
:= arch
/x86_64
/boot
/bzImage
99 KBUILD_IMAGE
:= $(BOOTIMAGE
)
102 $(Q
)$(MAKE
) $(build
)=$(boot
) $(BOOTIMAGE
)
105 $(Q
)$(MAKE
) $(build
)=$(boot
) BOOTIMAGE
=$(BOOTIMAGE
) zlilo
108 $(Q
)$(MAKE
) $(build
)=$(boot
) BOOTIMAGE
=$(BOOTIMAGE
) zdisk
110 fdimage fdimage144 fdimage288 isoimage
: vmlinux
111 $(Q
)$(MAKE
) $(build
)=$(boot
) BOOTIMAGE
=$(BOOTIMAGE
) $@
114 $(Q
)$(MAKE
) $(build
)=$(boot
) BOOTIMAGE
=$(BOOTIMAGE
) $@
117 $(Q
)$(MAKE
) $(clean)=$(boot
)
120 echo
'* bzImage - Compressed kernel image (arch/$(ARCH)/boot/bzImage)'
121 echo
' install - Install kernel using'
122 echo
' (your) ~/bin/installkernel or'
123 echo
' (distribution) /sbin/installkernel or'
124 echo
' install to $$(INSTALL_PATH) and run lilo'
125 echo
' bzdisk - Create a boot floppy in /dev/fd0'
126 echo
' fdimage - Create a boot floppy image'
127 echo
' isoimage - Create a boot CD-ROM image'
130 CLEAN_FILES
+= arch
/$(ARCH
)/boot
/fdimage \
131 arch
/$(ARCH
)/boot
/image.iso \
132 arch
/$(ARCH
)/boot
/mtools.conf