2 # Copyright (C) 2006-2011 OpenWrt.org
4 # This is free software, licensed under the GNU General Public License v2.
5 # See /LICENSE for more information.
8 KERNEL_MAKEOPTS
:= -C
$(LINUX_DIR
) \
9 CROSS_COMPILE
="$(KERNEL_CROSS)" \
10 ARCH
="$(LINUX_KARCH)" \
12 CONFIG_SHELL
="$(BASH)" \
13 $(if
$(findstring c
,$(OPENWRT_VERBOSE
)),V
=1)
15 ifdef CONFIG_STRIP_KERNEL_EXPORTS
17 EXTRA_LDSFLAGS
="-I$(KERNEL_BUILD_DIR) -include symtab.h"
20 INITRAMFS_EXTRA_FILES ?
= $(GENERIC_PLATFORM_DIR
)/image
/initramfs-base-files.txt
23 KERNEL_MAKEOPTS
+= CC
="$(KERNEL_CC)"
26 export HOST_EXTRACFLAGS
=-I
$(STAGING_DIR_HOST
)/include
29 Kernel
/Patch
:=$(Kernel
/Patch
/Default
)
30 ifeq ($(strip $(CONFIG_EXTERNAL_KERNEL_TREE
)),"")
31 ifeq ($(strip $(CONFIG_KERNEL_GIT_CLONE_URI
)),"")
32 define Kernel
/Prepare
/Default
33 bzcat
$(DL_DIR
)/$(LINUX_SOURCE
) |
$(TAR
) -C
$(KERNEL_BUILD_DIR
) $(TAR_OPTIONS
)
35 touch
$(LINUX_DIR
)/.quilt_used
38 ifeq ($(strip $(CONFIG_KERNEL_GIT_LOCAL_REPOSITORY
)),"")
39 define Kernel
/Prepare
/Default
40 git clone
$(CONFIG_KERNEL_GIT_CLONE_URI
) $(LINUX_DIR
)
43 define Kernel
/Prepare
/Default
44 git clone
--reference
$(CONFIG_KERNEL_GIT_LOCAL_REPOSITORY
) $(CONFIG_KERNEL_GIT_CLONE_URI
) $(LINUX_DIR
)
49 define Kernel
/Prepare
/Default
50 mkdir
-p
$(KERNEL_BUILD_DIR
)
51 if
[ -d
$(LINUX_DIR
) ]; then \
54 ln
-s
$(CONFIG_EXTERNAL_KERNEL_TREE
) $(LINUX_DIR
)
58 ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS
),y
)
59 ifeq ($(strip $(CONFIG_EXTERNAL_CPIO
)),"")
60 define Kernel
/SetInitramfs
61 mv
$(LINUX_DIR
)/.config
$(LINUX_DIR
)/.config.old
62 grep
-v
-e INITRAMFS
-e CONFIG_RD_
-e CONFIG_BLK_DEV_INITRD
$(LINUX_DIR
)/.config.old
> $(LINUX_DIR
)/.config
63 echo
'CONFIG_BLK_DEV_INITRD=y' >> $(LINUX_DIR
)/.config
64 echo
'CONFIG_INITRAMFS_SOURCE="$(strip $(TARGET_DIR) $(INITRAMFS_EXTRA_FILES))"' >> $(LINUX_DIR
)/.config
65 echo
'CONFIG_INITRAMFS_ROOT_UID=$(shell id -u)' >> $(LINUX_DIR
)/.config
66 echo
'CONFIG_INITRAMFS_ROOT_GID=$(shell id -g)' >> $(LINUX_DIR
)/.config
67 echo
"$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_NONE),CONFIG_INITRAMFS_COMPRESSION_NONE=y,# CONFIG_INITRAMFS_COMPRESSION_NONE is not set)" >> $(LINUX_DIR
)/.config
68 echo
-e
"$(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)" >> $(LINUX_DIR
)/.config
69 echo
-e
"$(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)" >> $(LINUX_DIR
)/.config
70 echo
-e
"$(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)" >> $(LINUX_DIR
)/.config
71 echo
-e
"$(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)" >> $(LINUX_DIR
)/.config
72 echo
-e
"$(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
75 define Kernel
/SetInitramfs
76 mv
$(LINUX_DIR
)/.config
$(LINUX_DIR
)/.config.old
77 grep
-v INITRAMFS
$(LINUX_DIR
)/.config.old
> $(LINUX_DIR
)/.config
78 echo
'CONFIG_INITRAMFS_SOURCE="$(call qstrip,$(CONFIG_EXTERNAL_CPIO))"' >> $(LINUX_DIR
)/.config
79 echo
'CONFIG_INITRAMFS_ROOT_UID=$(shell id -u)' >> $(LINUX_DIR
)/.config
80 echo
'CONFIG_INITRAMFS_ROOT_GID=$(shell id -g)' >> $(LINUX_DIR
)/.config
81 echo
"$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_NONE),CONFIG_INITRAMFS_COMPRESSION_NONE=y,# CONFIG_INITRAMFS_COMPRESSION_NONE is not set)" >> $(LINUX_DIR
)/.config
82 echo
-e
"$(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)" >> $(LINUX_DIR
)/.config
83 echo
-e
"$(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)" >> $(LINUX_DIR
)/.config
84 echo
-e
"$(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)" >> $(LINUX_DIR
)/.config
85 echo
-e
"$(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)" >> $(LINUX_DIR
)/.config
86 echo
-e
"$(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
90 define Kernel
/SetInitramfs
91 mv
$(LINUX_DIR
)/.config
$(LINUX_DIR
)/.config.old
92 grep
-v INITRAMFS
$(LINUX_DIR
)/.config.old
> $(LINUX_DIR
)/.config
93 echo
'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR
)/.config
97 define Kernel
/Configure
/Default
98 $(LINUX_CONF_CMD
) > $(LINUX_DIR
)/.config.target
99 # copy CONFIG_KERNEL_* settings over to .config.target
100 awk
'/^(#[[:space:]]+)?CONFIG_KERNEL/{sub("CONFIG_KERNEL_","CONFIG_");print}' $(TOPDIR
)/.config
>> $(LINUX_DIR
)/.config.target
101 echo
"# CONFIG_KALLSYMS_EXTRA_PASS is not set" >> $(LINUX_DIR
)/.config.target
102 echo
"# CONFIG_KALLSYMS_ALL is not set" >> $(LINUX_DIR
)/.config.target
103 echo
"# CONFIG_KPROBES is not set" >> $(LINUX_DIR
)/.config.target
104 $(SCRIPT_DIR
)/metadata.pl kconfig
$(TMP_DIR
)/.packageinfo
$(TOPDIR
)/.config
> $(LINUX_DIR
)/.config.
override
105 $(SCRIPT_DIR
)/kconfig.pl
'm+' '+' $(LINUX_DIR
)/.config.target
/dev
/null
$(LINUX_DIR
)/.config.
override > $(LINUX_DIR
)/.config
106 $(call Kernel
/SetInitramfs
)
107 -$(_SINGLE
)$(MAKE
) $(KERNEL_MAKEOPTS
) oldconfig prepare scripts
108 rm -rf
$(KERNEL_BUILD_DIR
)/modules
109 $(SH_FUNC
) grep
'=[ym]' $(LINUX_DIR
)/.config | LC_ALL
=C
sort | md5s
> $(LINUX_DIR
)/.vermagic
112 define Kernel
/CompileModules
/Default
113 rm -f
$(LINUX_DIR
)/vmlinux
$(LINUX_DIR
)/System.map
114 +$(MAKE
) $(KERNEL_MAKEOPTS
) modules
117 OBJCOPY_STRIP
= -R .reginfo
-R .notes
-R .note
-R .comment
-R .mdebug
-R .note.gnu.build-id
119 define Kernel
/CompileImage
/Default
120 $(if
$(CONFIG_TARGET_ROOTFS_INITRAMFS
),,rm -f
$(TARGET_DIR
)/init
)
121 +$(MAKE
) $(KERNEL_MAKEOPTS
) $(KERNELNAME
)
122 $(KERNEL_CROSS
)objcopy
-O binary
$(OBJCOPY_STRIP
) -S
$(LINUX_DIR
)/vmlinux
$(LINUX_KERNEL
)
123 $(KERNEL_CROSS
)objcopy
$(OBJCOPY_STRIP
) -S
$(LINUX_DIR
)/vmlinux
$(KERNEL_BUILD_DIR
)/vmlinux.elf
126 define Kernel
/Clean
/Default
127 rm -f
$(KERNEL_BUILD_DIR
)/linux-
$(LINUX_VERSION
)/.configured
128 rm -f
$(LINUX_KERNEL
)
129 $(_SINGLE
)$(MAKE
) -C
$(KERNEL_BUILD_DIR
)/linux-
$(LINUX_VERSION
) clean