2 # Copyright (C) 2006-2007 OpenWrt.org
4 # This is free software, licensed under the GNU General Public License v2.
5 # See /LICENSE for more information.
7 include $(INCLUDE_DIR
)/host.mk
8 include $(INCLUDE_DIR
)/prereq.mk
9 include $(INCLUDE_DIR
)/depends.mk
15 KERNEL_FILE_DEPENDS
=$(GENERIC_PATCH_DIR
) $(PATCH_DIR
) $(GENERIC_FILES_DIR
) $(FILES_DIR
)
16 STAMP_PREPARED
=$(LINUX_DIR
)/.prepared
$(if
$(QUILT
)$(DUMP
),,_
$(shell $(call find_md5
,$(KERNEL_FILE_DEPENDS
),)))
17 STAMP_CONFIGURED
:=$(LINUX_DIR
)/.configured
18 include $(INCLUDE_DIR
)/download.mk
19 include $(INCLUDE_DIR
)/quilt.mk
20 include $(INCLUDE_DIR
)/kernel-defaults.mk
23 $(call Kernel
/Prepare
/Default
)
26 define Kernel
/Configure
27 $(call Kernel
/Configure
/Default
)
30 define Kernel
/CompileModules
31 $(call Kernel
/CompileModules
/Default
)
34 define Kernel
/CompileImage
35 $(call Kernel
/CompileImage
/Default
)
36 $(call Kernel
/CompileImage
/Initramfs
)
40 $(call Kernel
/Clean
/Default
)
43 define Download
/kernel
46 HASH
:=$(LINUX_KERNEL_HASH
)
50 ifneq ($(strip $(CONFIG_KERNEL_GIT_LOCAL_REPOSITORY
)),"")
51 KERNEL_GIT_OPTS
+=--reference
$(CONFIG_KERNEL_GIT_LOCAL_REPOSITORY
)
54 ifneq ($(strip $(CONFIG_KERNEL_GIT_BRANCH
)),"")
55 KERNEL_GIT_OPTS
+=--branch
$(CONFIG_KERNEL_GIT_BRANCH
)
58 define Download
/git-kernel
59 URL
:=$(call qstrip
,$(CONFIG_KERNEL_GIT_CLONE_URI
))
61 VERSION
:=$(CONFIG_KERNEL_GIT_BRANCH
)
63 SUBDIR
:=linux-
$(LINUX_VERSION
)
64 OPTS
:=$(KERNEL_GIT_OPTS
)
67 ifdef CONFIG_COLLECT_KERNEL_DEBUG
68 define Kernel
/CollectDebug
69 rm -rf
$(KERNEL_BUILD_DIR
)/debug
70 mkdir
-p
$(KERNEL_BUILD_DIR
)/debug
/modules
71 $(CP
) $(LINUX_DIR
)/vmlinux
$(KERNEL_BUILD_DIR
)/debug
/
73 $(STAGING_DIR_ROOT
)/lib
/modules
/$(LINUX_VERSION
)/* \
74 $(KERNEL_BUILD_DIR
)/debug
/modules
/
75 $(FIND
) $(KERNEL_BUILD_DIR
)/debug
-type f |
$(XARGS
) $(KERNEL_CROSS
)strip --only-keep-debug
76 $(TAR
) c
-C
$(KERNEL_BUILD_DIR
) debug \
77 $(if
$(SOURCE_DATE_EPOCH
),--mtime
="@$(SOURCE_DATE_EPOCH)") \
78 | bzip2
-c
-9 > $(BIN_DIR
)/kernel-debug.
tar.bz2
82 ifeq ($(DUMP
)$(filter prereq
clean refresh update
,$(MAKECMDGOALS
)),)
83 ifneq ($(if
$(QUILT
),,$(CONFIG_AUTOREBUILD
)),)
84 define Kernel
/Autoclean
85 $(PKG_BUILD_DIR
)/.dep_files
: $(STAMP_PREPARED
)
86 $(call rdep
,$(KERNEL_FILE_DEPENDS
),$(STAMP_PREPARED
),$(PKG_BUILD_DIR
)/.dep_files
,-x
"*/.dep_*")
92 $(if
$(QUILT
),$(Build
/Quilt
))
93 $(if
$(LINUX_SITE
),$(call Download
,kernel
))
94 $(if
$(call qstrip
,$(CONFIG_KERNEL_GIT_CLONE_URI
)),$(call Download
,git-kernel
))
99 $(STAMP_PREPARED
): $(if
$(LINUX_SITE
),$(DL_DIR
)/$(LINUX_SOURCE
))
100 -rm -rf
$(KERNEL_BUILD_DIR
)
101 -mkdir
-p
$(KERNEL_BUILD_DIR
)
105 $(KERNEL_BUILD_DIR
)/symtab.h
: FORCE
106 rm -f
$(KERNEL_BUILD_DIR
)/symtab.h
107 touch
$(KERNEL_BUILD_DIR
)/symtab.h
108 +$(MAKE
) $(KERNEL_MAKEOPTS
) vmlinux
109 find
$(LINUX_DIR
) $(STAGING_DIR_ROOT
)/lib
/modules
-name \
*.ko | \
110 xargs
$(TARGET_CROSS
)nm | \
111 awk
'$$$$1 == "U" { print $$$$2 } ' | \
112 sort -u
> $(KERNEL_BUILD_DIR
)/mod_symtab.txt
113 $(TARGET_CROSS
)nm
-n
$(LINUX_DIR
)/vmlinux.o | grep
' [rR] __ksymtab' | sed
-e
's,........ [rR] __ksymtab_,,' > $(KERNEL_BUILD_DIR
)/kernel_symtab.txt
114 grep
-Ff
$(KERNEL_BUILD_DIR
)/mod_symtab.txt
$(KERNEL_BUILD_DIR
)/kernel_symtab.txt
> $(KERNEL_BUILD_DIR
)/sym_include.txt
115 grep
-Fvf
$(KERNEL_BUILD_DIR
)/mod_symtab.txt
$(KERNEL_BUILD_DIR
)/kernel_symtab.txt
> $(KERNEL_BUILD_DIR
)/sym_exclude.txt
117 echo
'#define SYMTAB_KEEP \'; \
118 cat $(KERNEL_BUILD_DIR)/sym_include.txt | \
119 awk '{print "KEEP(*(___ksymtab+" $$$$1 ")) \\" }'; \
121 echo '#define SYMTAB_KEEP_GPL \'; \
122 cat
$(KERNEL_BUILD_DIR
)/sym_include.txt | \
123 awk
'{print "KEEP(*(___ksymtab_gpl+" $$$$1 ")) \\" }'; \
125 echo
'#define SYMTAB_DISCARD \'; \
126 cat $(KERNEL_BUILD_DIR)/sym_exclude.txt | \
127 awk '{print "*(___ksymtab+" $$$$1 ") \\" }'; \
129 echo '#define SYMTAB_DISCARD_GPL \'; \
130 cat
$(KERNEL_BUILD_DIR
)/sym_exclude.txt | \
131 awk
'{print "*(___ksymtab_gpl+" $$$$1 ") \\" }'; \
135 $(STAMP_CONFIGURED
): $(STAMP_PREPARED
) $(LINUX_KCONFIG_LIST
) $(TOPDIR
)/.config FORCE
139 $(LINUX_DIR
)/.modules
: $(STAMP_CONFIGURED
) $(LINUX_DIR
)/.config FORCE
140 $(Kernel
/CompileModules
)
143 $(LINUX_DIR
)/.image
: $(STAMP_CONFIGURED
) $(if
$(CONFIG_STRIP_KERNEL_EXPORTS
),$(KERNEL_BUILD_DIR
)/symtab.h
) FORCE
144 $(Kernel
/CompileImage
)
145 $(Kernel
/CollectDebug
)
154 download
: $(if
$(LINUX_SITE
),$(DL_DIR
)/$(LINUX_SOURCE
))
155 prepare
: $(STAMP_CONFIGURED
)
156 compile
: $(LINUX_DIR
)/.modules
157 $(MAKE
) -C image compile TARGET_BUILD
=
159 oldconfig menuconfig nconfig
: $(STAMP_PREPARED
) $(STAMP_CHECKED
) FORCE
160 rm -f
$(LINUX_DIR
)/.config.prev
161 rm -f
$(STAMP_CONFIGURED
)
162 $(LINUX_RECONF_CMD
) > $(LINUX_DIR
)/.config
163 $(_SINGLE
)$(MAKE
) -C
$(LINUX_DIR
) $(KERNEL_MAKEOPTS
) HOST_LOADLIBES
="-L$(STAGING_DIR_HOST)/lib -lncurses" $$@
164 $(LINUX_RECONF_DIFF
) $(LINUX_DIR
)/.config
> $(LINUX_RECONFIG_TARGET
)
166 install: $(LINUX_DIR
)/.image
167 +$(MAKE
) -C image compile
install TARGET_BUILD
=
170 rm -rf
$(KERNEL_BUILD_DIR
)
173 @
+$(NO_TRACE_MAKE
) -s
-C image prereq TARGET_BUILD
=