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
)/prereq.mk
8 include $(INCLUDE_DIR
)/depends.mk
14 KERNEL_FILE_DEPENDS
=$(GENERIC_BACKPORT_DIR
) $(GENERIC_PATCH_DIR
) $(GENERIC_HACK_DIR
) $(PATCH_DIR
) $(GENERIC_FILES_DIR
) $(FILES_DIR
)
15 STAMP_PREPARED
=$(LINUX_DIR
)/.prepared
$(if
$(QUILT
)$(DUMP
),,_
$(shell $(call find_md5
,$(KERNEL_FILE_DEPENDS
),)))
16 STAMP_CONFIGURED
:=$(LINUX_DIR
)/.configured
17 include $(INCLUDE_DIR
)/download.mk
18 include $(INCLUDE_DIR
)/quilt.mk
19 include $(INCLUDE_DIR
)/kernel-defaults.mk
22 $(call Kernel
/Prepare
/Default
)
25 define Kernel
/Configure
26 $(call Kernel
/Configure
/Default
)
29 define Kernel
/CompileModules
30 $(call Kernel
/CompileModules
/Default
)
33 define Kernel
/CompileImage
34 $(call Kernel
/CompileImage
/Default
)
35 $(call Kernel
/CompileImage
/Initramfs
)
39 $(call Kernel
/Clean
/Default
)
42 define Download
/kernel
45 HASH
:=$(LINUX_KERNEL_HASH
)
49 ifneq ($(strip $(CONFIG_KERNEL_GIT_LOCAL_REPOSITORY
)),"")
50 KERNEL_GIT_OPTS
+=--reference
$(CONFIG_KERNEL_GIT_LOCAL_REPOSITORY
)
53 define Download
/git-kernel
54 URL
:=$(call qstrip
,$(CONFIG_KERNEL_GIT_CLONE_URI
))
56 VERSION
:=$(CONFIG_KERNEL_GIT_REF
)
58 SUBDIR
:=linux-
$(LINUX_VERSION
)
59 OPTS
:=$(KERNEL_GIT_OPTS
)
62 ifdef CONFIG_COLLECT_KERNEL_DEBUG
63 define Kernel
/CollectDebug
64 rm -rf
$(KERNEL_BUILD_DIR
)/debug
65 mkdir
-p
$(KERNEL_BUILD_DIR
)/debug
/modules
66 $(CP
) $(LINUX_DIR
)/vmlinux
$(KERNEL_BUILD_DIR
)/debug
/
68 $(STAGING_DIR_ROOT
)/lib
/modules
/$(LINUX_VERSION
)/* \
69 $(KERNEL_BUILD_DIR
)/debug
/modules
/
70 $(FIND
) $(KERNEL_BUILD_DIR
)/debug
-type f |
$(XARGS
) $(KERNEL_CROSS
)strip --only-keep-debug
71 $(TAR
) c
-C
$(KERNEL_BUILD_DIR
) debug \
72 $(if
$(SOURCE_DATE_EPOCH
),--mtime
="@$(SOURCE_DATE_EPOCH)") \
73 | bzip2
-c
-9 > $(BIN_DIR
)/kernel-debug.
tar.bz2
77 ifeq ($(DUMP
)$(filter prereq
clean refresh update
,$(MAKECMDGOALS
)),)
78 ifneq ($(if
$(QUILT
),,$(CONFIG_AUTOREBUILD
)),)
79 define Kernel
/Autoclean
80 $(PKG_BUILD_DIR
)/.dep_files
: $(STAMP_PREPARED
)
81 $(call rdep
,$(KERNEL_FILE_DEPENDS
),$(STAMP_PREPARED
),$(PKG_BUILD_DIR
)/.dep_files
,-x
"*/.dep_*")
87 $(if
$(QUILT
),$(Build
/Quilt
))
88 $(if
$(LINUX_SITE
),$(call Download
,kernel
))
89 $(if
$(call qstrip
,$(CONFIG_KERNEL_GIT_CLONE_URI
)),$(call Download
,git-kernel
))
94 $(STAMP_PREPARED
): $(if
$(LINUX_SITE
),$(DL_DIR
)/$(LINUX_SOURCE
))
95 -rm -rf
$(KERNEL_BUILD_DIR
)
96 -mkdir
-p
$(KERNEL_BUILD_DIR
)
100 $(KERNEL_BUILD_DIR
)/symtab.h
: FORCE
101 rm -f
$(KERNEL_BUILD_DIR
)/symtab.h
102 touch
$(KERNEL_BUILD_DIR
)/symtab.h
103 +$(KERNEL_MAKE
) vmlinux
104 find
$(LINUX_DIR
) $(STAGING_DIR_ROOT
)/lib
/modules
-name \
*.ko | \
105 xargs
$(TARGET_CROSS
)nm | \
106 awk
'$$$$1 == "U" { print $$$$2 } ' | \
107 sort -u
> $(KERNEL_BUILD_DIR
)/mod_symtab.txt
108 $(TARGET_CROSS
)nm
-n
$(LINUX_DIR
)/vmlinux.o | grep
' [rR] __ksymtab' | sed
-e
's,........ [rR] __ksymtab_,,' > $(KERNEL_BUILD_DIR
)/kernel_symtab.txt
109 grep
-Ff
$(KERNEL_BUILD_DIR
)/mod_symtab.txt
$(KERNEL_BUILD_DIR
)/kernel_symtab.txt
> $(KERNEL_BUILD_DIR
)/sym_include.txt
110 grep
-Fvf
$(KERNEL_BUILD_DIR
)/mod_symtab.txt
$(KERNEL_BUILD_DIR
)/kernel_symtab.txt
> $(KERNEL_BUILD_DIR
)/sym_exclude.txt
112 echo
'#define SYMTAB_KEEP \'; \
113 cat $(KERNEL_BUILD_DIR)/sym_include.txt | \
114 awk '{print "KEEP(*(___ksymtab+" $$$$1 ")) \\" }'; \
116 echo '#define SYMTAB_KEEP_GPL \'; \
117 cat
$(KERNEL_BUILD_DIR
)/sym_include.txt | \
118 awk
'{print "KEEP(*(___ksymtab_gpl+" $$$$1 ")) \\" }'; \
120 echo
'#define SYMTAB_DISCARD \'; \
121 cat $(KERNEL_BUILD_DIR)/sym_exclude.txt | \
122 awk '{print "*(___ksymtab+" $$$$1 ") \\" }'; \
124 echo '#define SYMTAB_DISCARD_GPL \'; \
125 cat
$(KERNEL_BUILD_DIR
)/sym_exclude.txt | \
126 awk
'{print "*(___ksymtab_gpl+" $$$$1 ") \\" }'; \
130 $(STAMP_CONFIGURED
): $(STAMP_PREPARED
) $(LINUX_KCONFIG_LIST
) $(TOPDIR
)/.config FORCE
134 $(LINUX_DIR
)/.modules
: export STAGING_PREFIX
=$$(STAGING_DIR_HOST
)
135 $(LINUX_DIR
)/.modules
: export PKG_CONFIG_PATH
=$$(STAGING_DIR_HOST
)/lib
/pkgconfig
136 $(LINUX_DIR
)/.modules
: export PKG_CONFIG_LIBDIR
=$$(STAGING_DIR_HOST
)/lib
/pkgconfig
137 $(LINUX_DIR
)/.modules
: $(STAMP_CONFIGURED
) $(LINUX_DIR
)/.config FORCE
138 $(Kernel
/CompileModules
)
141 $(LINUX_DIR
)/.image
: export STAGING_PREFIX
=$$(STAGING_DIR_HOST
)
142 $(LINUX_DIR
)/.image
: export PKG_CONFIG_PATH
=$$(STAGING_DIR_HOST
)/lib
/pkgconfig
143 $(LINUX_DIR
)/.image
: export PKG_CONFIG_LIBDIR
=$$(STAGING_DIR_HOST
)/lib
/pkgconfig
144 $(LINUX_DIR
)/.image
: $(STAMP_CONFIGURED
) $(if
$(CONFIG_STRIP_KERNEL_EXPORTS
),$(KERNEL_BUILD_DIR
)/symtab.h
) FORCE
145 $(Kernel
/CompileImage
)
146 $(Kernel
/CollectDebug
)
155 download
: $(if
$(LINUX_SITE
),$(DL_DIR
)/$(LINUX_SOURCE
))
156 prepare
: $(STAMP_PREPARED
)
157 compile
: $(LINUX_DIR
)/.modules
158 $(MAKE
) -C image compile TARGET_BUILD
=
160 oldconfig menuconfig nconfig
: $(STAMP_PREPARED
) $(STAMP_CHECKED
) FORCE
161 rm -f
$(LINUX_DIR
)/.config.prev
162 rm -f
$(STAMP_CONFIGURED
)
163 $(LINUX_RECONF_CMD
) > $(LINUX_DIR
)/.config
164 $(_SINGLE
)$(KERNEL_MAKE
) \
165 $(if
$(findstring Darwin
,$(HOST_OS
)),HOST_LOADLIBES
="-L$(STAGING_DIR_HOST)/lib -lncurses") \
166 YACC
=$(STAGING_DIR_HOST
)/bin
/bison \
168 $(LINUX_RECONF_DIFF
) $(LINUX_DIR
)/.config | \
169 grep
-vE
'(CONFIG_CC_(HAS_ASM_GOTO|IS_GCC|IS_CLANG)|GCC_VERSION)=' \
170 > $(LINUX_RECONFIG_TARGET
)
172 install: $(LINUX_DIR
)/.image
173 +$(MAKE
) -C image compile
install TARGET_BUILD
=
176 rm -rf
$(KERNEL_BUILD_DIR
)
179 @
+$(NO_TRACE_MAKE
) -s
-C image prereq TARGET_BUILD
=