prevent the new config changes from interfering with kernel_menuconfig
[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 KERNEL_BUILD:=1
8
9 include $(INCLUDE_DIR)/kernel-version.mk
10 include $(INCLUDE_DIR)/host.mk
11 include $(INCLUDE_DIR)/kernel.mk
12 include $(INCLUDE_DIR)/prereq.mk
13
14 GENERIC_LINUX_CONFIG:=$(GENERIC_PLATFORM_DIR)/config-$(shell [ -f "$(GENERIC_PLATFORM_DIR)/config-$(KERNEL_PATCHVER)" ] && echo "$(KERNEL_PATCHVER)" || echo template ) 
15 LINUX_CONFIG_DIR ?= ./config$(shell [ -d "./config-$(KERNEL_PATCHVER)" ] && printf -- "-$(KERNEL_PATCHVER)" || true )
16 LINUX_CONFIG ?= $(LINUX_CONFIG_DIR)/default
17
18 ifneq ($(DUMP),)
19   TMP_CONFIG:=$(TMP_DIR)/.kconfig-$(BOARD)-$(KERNEL)
20   $(TMP_CONFIG): $(GENERIC_LINUX_CONFIG) $(LINUX_CONFIG)
21         $(SCRIPT_DIR)/config.pl + $^ > $@
22   -include $(TMP_CONFIG)
23   .SILENT: $(TMP_CONFIG)
24 endif
25
26 ifneq ($(CONFIG_ATM),)
27   FEATURES += atm
28 endif
29 ifneq ($(CONFIG_PCI),)
30   FEATURES += pci
31 endif
32 ifneq ($(CONFIG_USB),)
33   FEATURES += usb
34 endif
35 ifneq ($(CONFIG_PCMCIA)$(CONFIG_PCCARD),)
36   FEATURES += pcmcia
37 endif
38 ifneq ($(CONFIG_VIDEO_DEV),)
39   FEATURES += video
40 endif
41
42 # remove duplicates
43 FEATURES:=$(sort $(FEATURES))
44
45 ifeq ($(DUMP),1)
46   all: dumpinfo
47 else
48   all: compile
49 endif
50
51 ifneq (,$(findstring uml,$(BOARD)))
52   LINUX_KARCH:=um
53 else
54   LINUX_KARCH:=$(shell echo $(ARCH) | sed -e 's/i[3-9]86/i386/' \
55         -e 's/mipsel/mips/' \
56         -e 's/mipseb/mips/' \
57         -e 's/powerpc/ppc/' \
58         -e 's/sh[234]/sh/' \
59         -e 's/armeb/arm/' \
60   )
61 endif
62
63 STAMP_PREPARED:=$(LINUX_DIR)/.prepared
64 STAMP_CONFIGURED:=$(LINUX_DIR)/.configured
65 include $(INCLUDE_DIR)/quilt.mk
66 include $(INCLUDE_DIR)/kernel-defaults.mk
67
68 define Kernel/Prepare
69         $(call Kernel/Prepare/Default)
70 endef
71
72 define Kernel/Configure
73         $(call Kernel/Configure/Default)
74 endef
75
76 define Kernel/CompileModules
77         $(call Kernel/CompileModules/Default)
78 endef
79
80 define Kernel/CompileImage
81         $(call Kernel/CompileImage/Default)
82 endef
83
84 define Kernel/Clean
85         $(call Kernel/Clean/Default)
86 endef
87
88 define BuildKernel
89   ifneq ($(LINUX_SITE),)
90     $(DL_DIR)/$(LINUX_SOURCE):
91                 -mkdir -p $(DL_DIR)
92                 $(SCRIPT_DIR)/download.pl $(DL_DIR) $(LINUX_SOURCE) $(LINUX_KERNEL_MD5SUM) $(LINUX_SITE)
93   endif
94
95   $(STAMP_PREPARED): $(DL_DIR)/$(LINUX_SOURCE)
96         -rm -rf $(KERNEL_BUILD_DIR)
97         -mkdir -p $(KERNEL_BUILD_DIR)
98         $(call Kernel/Prepare)
99         touch $$@
100
101   $(STAMP_CONFIGURED): $(STAMP_PREPARED) $(LINUX_CONFIG) $(GENERIC_LINUX_CONFIG) $(TOPDIR)/.config
102         $(call Kernel/Configure)
103         touch $$@
104
105   $(LINUX_DIR)/.modules: $(STAMP_CONFIGURED) $(LINUX_DIR)/.config FORCE
106         $(call Kernel/CompileModules)
107         touch $$@
108
109   $(LINUX_DIR)/.image: $(STAMP_CONFIGURED) FORCE
110         $(call Kernel/CompileImage)
111         touch $$@
112         
113   mostlyclean: FORCE
114         $(call Kernel/Clean)
115
116   ifeq ($(DUMP),1)
117     dumpinfo:
118                 @echo 'Target: $(BOARD)-$(KERNEL)'
119                 @echo 'Target-Name: $(BOARDNAME) [$(KERNEL)]'
120                 @echo 'Target-Path: $(subst $(TOPDIR)/,,$(PWD))'
121                 @echo 'Target-Arch: $(ARCH)'
122                 @echo 'Target-Features: $(FEATURES)'
123                 @echo 'Linux-Version: $(LINUX_VERSION)'
124                 @echo 'Linux-Release: $(LINUX_RELEASE)'
125                 @echo 'Linux-Kernel-Arch: $(LINUX_KARCH)'
126                 @echo 'Target-Description:'
127                 @getvar $(call shvar,Target/Description)
128                 @echo '@@'
129                 @echo 'Default-Packages: $(DEFAULT_PACKAGES)'
130     ifneq ($(DUMPINFO),)
131                 @$(DUMPINFO)
132     endif
133   endif
134
135   define BuildKernel
136   endef
137 endef
138
139 define Profile/Default
140   NAME:=
141   PACKAGES:=
142 endef
143
144 confname=$(subst .,_,$(subst -,_,$(1)))
145 define Profile
146   $(eval $(call Profile/Default))
147   $(eval $(call Profile/$(1)))
148   $(eval $(call shexport,Profile/$(1)/Config))
149   $(eval $(call shexport,Profile/$(1)/Description))
150   DUMPINFO += \
151         echo "Target-Profile: $(1)"; \
152         echo "Target-Profile-Name: $(NAME)"; \
153         echo "Target-Profile-Packages: $(PACKAGES)"; \
154         if [ -f ./config/profile-$(1) ]; then \
155                 echo "Target-Profile-Kconfig: yes"; \
156         fi; \
157         echo "Target-Profile-Config: "; \
158         getvar "$(call shvar,Profile/$(1)/Config)"; \
159         echo "@@"; \
160         echo "Target-Profile-Description:"; \
161         getvar "$(call shvar,Profile/$(1)/Description)"; \
162         echo "@@"; \
163         echo;
164   ifeq ($(CONFIG_LINUX_$(call confname,$(KERNEL)_$(1))),y)
165     PROFILE=$(1)
166   endif
167 endef
168
169 $(eval $(call shexport,Target/Description))
170
171 download: $(DL_DIR)/$(LINUX_SOURCE)
172 prepare: $(STAMP_CONFIGURED)
173 compile: $(LINUX_DIR)/.modules
174 oldconfig menuconfig: $(STAMP_PREPARED) FORCE
175         $(call Kernel/Configure)
176         $(SCRIPT_DIR)/config.pl '+' $(GENERIC_LINUX_CONFIG) $(LINUX_CONFIG) > $(LINUX_DIR)/.config
177         $(MAKE) -C $(LINUX_DIR) $(KERNEL_MAKEOPTS) $@
178         $(SCRIPT_DIR)/config.pl '>' $(GENERIC_LINUX_CONFIG) $(LINUX_DIR)/.config > $(LINUX_CONFIG)
179
180 install: $(LINUX_DIR)/.image
181
182 clean: FORCE
183         rm -f $(STAMP_DIR)/.linux-compile
184         rm -rf $(KERNEL_BUILD_DIR)
185
186 rebuild: FORCE
187         @$(MAKE) mostlyclean
188         @if [ -f $(LINUX_KERNEL) ]; then \
189                 $(MAKE) clean; \
190         fi
191         @$(MAKE) compile
192
193