2 # linux/arch/x86/boot/compressed/Makefile
4 # create a compressed vmlinux image from the original vmlinux
7 targets
:= vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma head_
$(BITS
).o misc.o piggy.o
9 KBUILD_CFLAGS
:= -m
$(BITS
) -D__KERNEL__
$(LINUX_INCLUDE
) -O2
10 KBUILD_CFLAGS
+= -fno-strict-aliasing
-fPIC
11 KBUILD_CFLAGS
+= -DDISABLE_BRANCH_PROFILING
12 cflags-
$(CONFIG_X86_64
) := -mcmodel
=small
13 KBUILD_CFLAGS
+= $(cflags-y
)
14 KBUILD_CFLAGS
+= $(call cc-option
,-ffreestanding
)
15 KBUILD_CFLAGS
+= $(call cc-option
,-fno-stack-protector
)
17 KBUILD_AFLAGS
:= $(KBUILD_CFLAGS
) -D__ASSEMBLY__
19 LDFLAGS
:= -m elf_
$(UTS_MACHINE
)
22 hostprogs-y
:= mkpiggy
24 $(obj
)/vmlinux
: $(obj
)/vmlinux.lds
$(obj
)/head_
$(BITS
).o
$(obj
)/misc.o
$(obj
)/piggy.o FORCE
28 OBJCOPYFLAGS_vmlinux.bin
:= -R .comment
-S
29 $(obj
)/vmlinux.bin
: vmlinux FORCE
30 $(call if_changed
,objcopy
)
33 targets
+= vmlinux.bin.
all vmlinux.relocs relocs
34 hostprogs-
$(CONFIG_X86_NEED_RELOCS
) += relocs
36 quiet_cmd_relocs
= RELOCS
$@
37 cmd_relocs
= $(obj
)/relocs
$< > $@
;$(obj
)/relocs
--abs-relocs
$<
38 $(obj
)/vmlinux.relocs
: vmlinux
$(obj
)/relocs FORCE
39 $(call if_changed
,relocs
)
41 vmlinux.bin.all-y
:= $(obj
)/vmlinux.bin
42 vmlinux.bin.all-
$(CONFIG_X86_NEED_RELOCS
) += $(obj
)/vmlinux.relocs
44 $(obj
)/vmlinux.bin.gz
: $(vmlinux.bin.all-y
) FORCE
45 $(call if_changed
,gzip
)
46 $(obj
)/vmlinux.bin.bz2
: $(vmlinux.bin.all-y
) FORCE
47 $(call if_changed
,bzip2
)
48 $(obj
)/vmlinux.bin.lzma
: $(vmlinux.bin.all-y
) FORCE
49 $(call if_changed
,lzma
)
51 suffix-
$(CONFIG_KERNEL_GZIP
) := gz
52 suffix-
$(CONFIG_KERNEL_BZIP2
) := bz2
53 suffix-
$(CONFIG_KERNEL_LZMA
) := lzma
55 quiet_cmd_mkpiggy
= MKPIGGY
$@
56 cmd_mkpiggy
= $(obj
)/mkpiggy
$< > $@ ||
( rm -f
$@
; false
)
59 $(obj
)/piggy.S
: $(obj
)/vmlinux.bin.
$(suffix-y
) $(obj
)/mkpiggy FORCE
60 $(call if_changed
,mkpiggy
)