2 # Copyright (C) 2006-2015 OpenWrt.org
4 # This is free software, licensed under the GNU General Public License v2.
5 # See /LICENSE for more information.
8 ifdef CONFIG_STRIP_KERNEL_EXPORTS
10 EXTRA_LDSFLAGS
="-I$(KERNEL_BUILD_DIR) -include symtab.h"
13 INITRAMFS_EXTRA_FILES ?
= $(GENERIC_PLATFORM_DIR
)/image
/initramfs-base-files.txt
16 KERNEL_MAKEOPTS
+= CC
="$(KERNEL_CC)"
19 export HOST_EXTRACFLAGS
=-I
$(STAGING_DIR_HOST
)/include
22 Kernel
/Patch
:=$(Kernel
/Patch
/Default
)
24 ifneq (,$(findstring .xz
,$(LINUX_SOURCE
)))
30 ifeq ($(strip $(CONFIG_EXTERNAL_KERNEL_TREE
)),"")
31 ifeq ($(strip $(CONFIG_KERNEL_GIT_CLONE_URI
)),"")
32 define Kernel
/Prepare
/Default
33 $(LINUX_CAT
) $(DL_DIR
)/$(LINUX_SOURCE
) |
$(TAR
) -C
$(KERNEL_BUILD_DIR
) $(TAR_OPTIONS
)
35 $(if
$(QUILT
),touch
$(LINUX_DIR
)/.quilt_used
)
38 define Kernel
/Prepare
/Default
39 $(LINUX_CAT
) $(DL_DIR
)/$(LINUX_SOURCE
) |
$(TAR
) -C
$(KERNEL_BUILD_DIR
) $(TAR_OPTIONS
)
43 define Kernel
/Prepare
/Default
44 mkdir
-p
$(KERNEL_BUILD_DIR
)
45 if
[ -d
$(LINUX_DIR
) ]; then \
48 ln
-s
$(CONFIG_EXTERNAL_KERNEL_TREE
) $(LINUX_DIR
)
49 $(_SINGLE
) [ -d
$(LINUX_DIR
)/user_headers
] && rm -rf
$(LINUX_DIR
)/user_headers
53 ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS
),y
)
54 ifeq ($(strip $(CONFIG_EXTERNAL_CPIO
)),"")
55 define Kernel
/SetInitramfs
/PreConfigure
56 grep
-v
-e INITRAMFS
-e CONFIG_RD_
-e CONFIG_BLK_DEV_INITRD
$(LINUX_DIR
)/.config.old
> $(LINUX_DIR
)/.config
57 echo
'CONFIG_BLK_DEV_INITRD=y' >> $(LINUX_DIR
)/.config
58 echo
'CONFIG_INITRAMFS_SOURCE="$(strip $(TARGET_DIR) $(INITRAMFS_EXTRA_FILES))"' >> $(LINUX_DIR
)/.config
61 define Kernel
/SetInitramfs
/PreConfigure
62 grep
-v INITRAMFS
$(LINUX_DIR
)/.config.old
> $(LINUX_DIR
)/.config
63 echo
'CONFIG_INITRAMFS_SOURCE="$(call qstrip,$(CONFIG_EXTERNAL_CPIO))"' >> $(LINUX_DIR
)/.config
67 define Kernel
/SetInitramfs
68 rm -f
$(LINUX_DIR
)/.config.prev
69 mv
$(LINUX_DIR
)/.config
$(LINUX_DIR
)/.config.old
70 $(call Kernel
/SetInitramfs
/PreConfigure
)
71 echo
'CONFIG_INITRAMFS_ROOT_UID=$(shell id -u)' >> $(LINUX_DIR
)/.config
72 echo
'CONFIG_INITRAMFS_ROOT_GID=$(shell id -g)' >> $(LINUX_DIR
)/.config
73 echo
"$(if $(CONFIG_TARGET_INITRAMFS_FORCE),CONFIG_INITRAMFS_FORCE=y,# CONFIG_INITRAMFS_FORCE is not set)" >> $(LINUX_DIR
)/.config
74 echo
"$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_NONE),CONFIG_INITRAMFS_COMPRESSION_NONE=y,# CONFIG_INITRAMFS_COMPRESSION_NONE is not set)" >> $(LINUX_DIR
)/.config
75 echo
-e
"$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_GZIP),CONFIG_INITRAMFS_COMPRESSION_GZIP=y\nCONFIG_RD_GZIP=y,# CONFIG_INITRAMFS_COMPRESSION_GZIP is not set\n# CONFIG_RD_GZIP is not set)" >> $(LINUX_DIR
)/.config
76 echo
-e
"$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_BZIP2),CONFIG_INITRAMFS_COMPRESSION_BZIP2=y\nCONFIG_RD_BZIP2=y,# CONFIG_INITRAMFS_COMPRESSION_BZIP2 is not set\n# CONFIG_RD_BZIP2 is not set)" >> $(LINUX_DIR
)/.config
77 echo
-e
"$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZMA),CONFIG_INITRAMFS_COMPRESSION_LZMA=y\nCONFIG_RD_LZMA=y,# CONFIG_INITRAMFS_COMPRESSION_LZMA is not set\n# CONFIG_RD_LZMA is not set)" >> $(LINUX_DIR
)/.config
78 echo
-e
"$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZO),CONFIG_INITRAMFS_COMPRESSION_LZO=y\nCONFIG_RD_LZO=y,# CONFIG_INITRAMFS_COMPRESSION_LZO is not set\n# CONFIG_RD_LZO is not set)" >> $(LINUX_DIR
)/.config
79 echo
-e
"$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_XZ),CONFIG_INITRAMFS_COMPRESSION_XZ=y\nCONFIG_RD_XZ=y,# CONFIG_INITRAMFS_COMPRESSION_XZ is not set\n# CONFIG_RD_XZ is not set)" >> $(LINUX_DIR
)/.config
80 echo
-e
"$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZ4),CONFIG_INITRAMFS_COMPRESSION_LZ4=y\nCONFIG_RD_LZ4=y,# CONFIG_INITRAMFS_COMPRESSION_LZ4 is not set\n# CONFIG_RD_LZ4 is not set)" >> $(LINUX_DIR
)/.config
81 echo
-e
"$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_ZSTD),CONFIG_INITRAMFS_COMPRESSION_ZSTD=y\nCONFIG_RD_STD=y,# CONFIG_INITRAMFS_COMPRESSION_ZSTD is not set\n# CONFIG_RD_ZSTD is not set)" >> $(LINUX_DIR
)/.config
86 define Kernel
/SetNoInitramfs
87 mv
$(LINUX_DIR
)/.config.set
$(LINUX_DIR
)/.config.old
88 grep
-v INITRAMFS
$(LINUX_DIR
)/.config.old
> $(LINUX_DIR
)/.config.set
89 echo
'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR
)/.config.set
90 echo
'# CONFIG_INITRAMFS_FORCE is not set' >> $(LINUX_DIR
)/.config.set
93 define Kernel
/Configure
/Default
94 rm -f
$(LINUX_DIR
)/localversion
95 $(LINUX_CONF_CMD
) > $(LINUX_DIR
)/.config.target
96 # copy CONFIG_KERNEL_* settings over to .config.target
97 awk
'/^(#[[:space:]]+)?CONFIG_KERNEL/{sub("CONFIG_KERNEL_","CONFIG_");print}' $(TOPDIR
)/.config
>> $(LINUX_DIR
)/.config.target
98 echo
"# CONFIG_KALLSYMS_EXTRA_PASS is not set" >> $(LINUX_DIR
)/.config.target
99 echo
"# CONFIG_KALLSYMS_ALL is not set" >> $(LINUX_DIR
)/.config.target
100 echo
"CONFIG_KALLSYMS_UNCOMPRESSED=y" >> $(LINUX_DIR
)/.config.target
101 $(SCRIPT_DIR
)/package-metadata.pl kconfig
$(TMP_DIR
)/.packageinfo
$(TOPDIR
)/.config
$(KERNEL_PATCHVER
) > $(LINUX_DIR
)/.config.
override
102 $(SCRIPT_DIR
)/kconfig.pl
'm+' '+' $(LINUX_DIR
)/.config.target
/dev
/null
$(LINUX_DIR
)/.config.
override > $(LINUX_DIR
)/.config.set
103 $(call Kernel
/SetNoInitramfs
)
104 rm -rf
$(KERNEL_BUILD_DIR
)/modules
105 cmp
-s
$(LINUX_DIR
)/.config.set
$(LINUX_DIR
)/.config.prev ||
{ \
106 cp
$(LINUX_DIR
)/.config.set
$(LINUX_DIR
)/.config
; \
107 cp
$(LINUX_DIR
)/.config.set
$(LINUX_DIR
)/.config.prev
; \
109 $(_SINGLE
) [ -d
$(LINUX_DIR
)/user_headers
] ||
$(KERNEL_MAKE
) INSTALL_HDR_PATH
=$(LINUX_DIR
)/user_headers headers_install
110 grep
'=[ym]' $(LINUX_DIR
)/.config.set | LC_ALL
=C
sort | mkhash md5
> $(LINUX_DIR
)/.vermagic
113 define Kernel
/Configure
/Initramfs
114 $(call Kernel
/SetInitramfs
)
117 define Kernel
/CompileModules
/Default
118 rm -f
$(LINUX_DIR
)/vmlinux
$(LINUX_DIR
)/System.map
119 +$(KERNEL_MAKE
) modules
122 OBJCOPY_STRIP
= -R .reginfo
-R .notes
-R .note
-R .comment
-R .mdebug
-R .note.gnu.build-id
124 # AMD64 shares the location with x86
125 ifeq ($(LINUX_KARCH
),x86_64
)
126 IMAGES_DIR
:=..
/..
/x86
/boot
129 define Kernel
/CopyImage
130 cmp
-s
$(LINUX_DIR
)/vmlinux
$(KERNEL_BUILD_DIR
)/vmlinux
$(1).debug ||
{ \
131 $(KERNEL_CROSS
)objcopy
-O binary
$(OBJCOPY_STRIP
) -S
$(LINUX_DIR
)/vmlinux
$(LINUX_KERNEL
)$(1); \
132 $(KERNEL_CROSS
)objcopy
$(OBJCOPY_STRIP
) -S
$(LINUX_DIR
)/vmlinux
$(KERNEL_BUILD_DIR
)/vmlinux
$(1).elf
; \
133 $(CP
) $(LINUX_DIR
)/vmlinux
$(KERNEL_BUILD_DIR
)/vmlinux
$(1).debug
; \
135 $(if
$(KERNEL_IMAGES
),$(KERNEL_IMAGES
),$(filter-out vmlinux dtbs
,$(KERNELNAME
))), \
136 $(CP
) $(LINUX_DIR
)/arch
/$(LINUX_KARCH
)/boot
/$(IMAGES_DIR
)/$(k
) $(KERNEL_BUILD_DIR
)/$(k
)$(1); \
141 define Kernel
/CompileImage
/Default
142 rm -f
$(TARGET_DIR
)/init
143 +$(KERNEL_MAKE
) $(if
$(KERNELNAME
),$(KERNELNAME
),all) modules
144 $(call Kernel
/CopyImage
)
147 ifneq ($(CONFIG_TARGET_ROOTFS_INITRAMFS
),)
148 define Kernel
/CompileImage
/Initramfs
149 $(call Kernel
/Configure
/Initramfs
)
150 $(CP
) $(GENERIC_PLATFORM_DIR
)/other-files
/init
$(TARGET_DIR
)/init
151 $(if
$(SOURCE_DATE_EPOCH
),touch
-hcd
"@$(SOURCE_DATE_EPOCH)" $(TARGET_DIR
)/init
)
152 rm -rf
$(KERNEL_BUILD_DIR
)/linux-
$(LINUX_VERSION
)/usr
/initramfs_data.cpio
*
153 +$(KERNEL_MAKE
) $(if
$(KERNELNAME
),$(KERNELNAME
),all) modules
154 $(call Kernel
/CopyImage
,-initramfs
)
157 define Kernel
/CompileImage
/Initramfs
161 define Kernel
/Clean
/Default
162 rm -f
$(KERNEL_BUILD_DIR
)/linux-
$(LINUX_VERSION
)/.configured
163 rm -f
$(LINUX_KERNEL
)
164 $(_SINGLE
)$(MAKE
) -C
$(KERNEL_BUILD_DIR
)/linux-
$(LINUX_VERSION
) clean