build: temporarily disable PKG_CHECK_FORMAT_SECURITY until after the release
[oweals/openwrt.git] / include / kernel-build.mk
1 #
2 # Copyright (C) 2006-2007 OpenWrt.org
3 #
4 # This is free software, licensed under the GNU General Public License v2.
5 # See /LICENSE for more information.
6 #
7 include $(INCLUDE_DIR)/host.mk
8 include $(INCLUDE_DIR)/prereq.mk
9
10 ifneq ($(DUMP),1)
11   all: compile
12 endif
13
14 export QUILT=1
15 STAMP_PREPARED:=$(LINUX_DIR)/.prepared
16 STAMP_CONFIGURED:=$(LINUX_DIR)/.configured
17 include $(INCLUDE_DIR)/download.mk
18 include $(INCLUDE_DIR)/quilt.mk
19 include $(INCLUDE_DIR)/kernel-defaults.mk
20
21 define Kernel/Prepare
22         $(call Kernel/Prepare/Default)
23 endef
24
25 define Kernel/Configure
26         $(call Kernel/Configure/Default)
27 endef
28
29 define Kernel/CompileModules
30         $(call Kernel/CompileModules/Default)
31 endef
32
33 define Kernel/CompileImage
34         $(call Kernel/CompileImage/Default)
35         $(call Kernel/CompileImage/Initramfs)
36 endef
37
38 define Kernel/Clean
39         $(call Kernel/Clean/Default)
40 endef
41
42 define Download/kernel
43   URL:=$(LINUX_SITE)
44   FILE:=$(LINUX_SOURCE)
45   MD5SUM:=$(LINUX_KERNEL_MD5SUM)
46 endef
47
48 ifdef CONFIG_COLLECT_KERNEL_DEBUG
49   define Kernel/CollectDebug
50         rm -rf $(KERNEL_BUILD_DIR)/debug
51         mkdir -p $(KERNEL_BUILD_DIR)/debug/modules
52         $(CP) $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/debug/
53         -$(CP) \
54                 $(STAGING_DIR_ROOT)/lib/modules/$(LINUX_VERSION)/* \
55                 $(KERNEL_BUILD_DIR)/debug/modules/
56         $(FIND) $(KERNEL_BUILD_DIR)/debug -type f | $(XARGS) $(KERNEL_CROSS)strip --only-keep-debug
57         $(TAR) c -C $(KERNEL_BUILD_DIR) debug | bzip2 -c -9 > $(BIN_DIR)/kernel-debug.tar.bz2
58   endef
59 endif
60
61 define BuildKernel
62   $(if $(QUILT),$(Build/Quilt))
63   $(if $(LINUX_SITE),$(call Download,kernel))
64
65   $(STAMP_PREPARED): $(if $(LINUX_SITE),$(DL_DIR)/$(LINUX_SOURCE))
66         -rm -rf $(KERNEL_BUILD_DIR)
67         -mkdir -p $(KERNEL_BUILD_DIR)
68         $(Kernel/Prepare)
69         touch $$@
70
71   $(KERNEL_BUILD_DIR)/symtab.h: FORCE
72         rm -f $(KERNEL_BUILD_DIR)/symtab.h
73         touch $(KERNEL_BUILD_DIR)/symtab.h
74         +$(MAKE) $(KERNEL_MAKEOPTS) vmlinux
75         find $(LINUX_DIR) $(STAGING_DIR_ROOT)/lib/modules -name \*.ko | \
76                 xargs $(TARGET_CROSS)nm | \
77                 awk '$$$$1 == "U" { print $$$$2 } ' | \
78                 sort -u > $(KERNEL_BUILD_DIR)/mod_symtab.txt
79         $(TARGET_CROSS)nm -n $(LINUX_DIR)/vmlinux.o | grep -F ' r __ksymtab' | sed -e 's,........ r __ksymtab_,,' > $(KERNEL_BUILD_DIR)/kernel_symtab.txt
80         grep -Ff $(KERNEL_BUILD_DIR)/mod_symtab.txt $(KERNEL_BUILD_DIR)/kernel_symtab.txt > $(KERNEL_BUILD_DIR)/sym_include.txt
81         grep -Fvf $(KERNEL_BUILD_DIR)/mod_symtab.txt $(KERNEL_BUILD_DIR)/kernel_symtab.txt > $(KERNEL_BUILD_DIR)/sym_exclude.txt
82         ( \
83                 echo '#define SYMTAB_KEEP \'; \
84                 cat $(KERNEL_BUILD_DIR)/sym_include.txt | \
85                         awk '{print "KEEP(*(___ksymtab+" $$$$1 ")) \\" }'; \
86                 echo; \
87                 echo '#define SYMTAB_KEEP_GPL \'; \
88                 cat $(KERNEL_BUILD_DIR)/sym_include.txt | \
89                         awk '{print "KEEP(*(___ksymtab_gpl+" $$$$1 ")) \\" }'; \
90                 echo; \
91                 echo '#define SYMTAB_DISCARD \'; \
92                 cat $(KERNEL_BUILD_DIR)/sym_exclude.txt | \
93                         awk '{print "*(___ksymtab+" $$$$1 ") \\" }'; \
94                 echo; \
95                 echo '#define SYMTAB_DISCARD_GPL \'; \
96                 cat $(KERNEL_BUILD_DIR)/sym_exclude.txt | \
97                         awk '{print "*(___ksymtab_gpl+" $$$$1 ") \\" }'; \
98                 echo; \
99         ) > $$@
100
101   $(STAMP_CONFIGURED): $(STAMP_PREPARED) $(LINUX_KCONFIG_LIST) $(TOPDIR)/.config
102         $(Kernel/Configure)
103         touch $$@
104
105   $(LINUX_DIR)/.modules: $(STAMP_CONFIGURED) $(LINUX_DIR)/.config FORCE
106         $(Kernel/CompileModules)
107         touch $$@
108
109   $(LINUX_DIR)/.image: $(STAMP_CONFIGURED) $(if $(CONFIG_STRIP_KERNEL_EXPORTS),$(KERNEL_BUILD_DIR)/symtab.h) FORCE
110         $(Kernel/CompileImage)
111         $(Kernel/CollectDebug)
112         touch $$@
113         
114   mostlyclean: FORCE
115         $(Kernel/Clean)
116
117   define BuildKernel
118   endef
119
120   download: $(if $(LINUX_SITE),$(DL_DIR)/$(LINUX_SOURCE))
121   prepare: $(STAMP_CONFIGURED)
122   compile: $(LINUX_DIR)/.modules
123         $(MAKE) -C image compile TARGET_BUILD=
124
125   oldconfig menuconfig nconfig: $(STAMP_PREPARED) $(STAMP_CHECKED) FORCE
126         rm -f $(STAMP_CONFIGURED)
127         $(LINUX_RECONF_CMD) > $(LINUX_DIR)/.config
128         $(_SINGLE)$(MAKE) -C $(LINUX_DIR) $(KERNEL_MAKEOPTS) $$@
129         $(LINUX_RECONF_DIFF) $(LINUX_DIR)/.config > $(LINUX_RECONFIG_TARGET)
130
131   install: $(LINUX_DIR)/.image
132         +$(MAKE) -C image compile install TARGET_BUILD=
133
134   clean: FORCE
135         rm -rf $(KERNEL_BUILD_DIR)
136
137   image-prereq:
138         @+$(NO_TRACE_MAKE) -s -C image prereq TARGET_BUILD=
139
140   prereq: image-prereq
141
142 endef