build system cleanup/restructuring as described in http://lists.openwrt.org/pipermail...
[openwrt-10.03/.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 $(INCLUDE_DIR)/prereq.mk
13
14 override MAKEFLAGS=
15
16 GENERIC_LINUX_CONFIG:=$(GENERIC_PLATFORM_DIR)/config-$(shell [ -f "$(GENERIC_PLATFORM_DIR)/config-$(KERNEL_PATCHVER)" ] && echo "$(KERNEL_PATCHVER)" || echo template ) 
17 LINUX_CONFIG_DIR ?= ./config$(shell [ -d "./config-$(KERNEL_PATCHVER)" ] && printf -- "-$(KERNEL_PATCHVER)" || true )
18 LINUX_CONFIG ?= $(LINUX_CONFIG_DIR)/default
19
20 ifneq ($(DUMP),)
21   TMP_CONFIG:=$(TMP_DIR)/.kconfig-$(BOARD)-$(KERNEL)
22   $(TMP_CONFIG): $(GENERIC_LINUX_CONFIG) $(LINUX_CONFIG)
23         $(SCRIPT_DIR)/config.pl + $^ > $@
24   -include $(TMP_CONFIG)
25   .SILENT: $(TMP_CONFIG)
26 endif
27
28 ifneq ($(CONFIG_PCI),)
29   FEATURES += pci
30 endif
31 ifneq ($(CONFIG_USB),)
32   FEATURES += usb
33 endif
34 ifneq ($(CONFIG_PCMCIA)$(CONFIG_PCCARD),)
35   FEATURES += pcmcia
36 endif
37
38 # remove duplicates
39 FEATURES:=$(sort $(FEATURES))
40
41 ifeq ($(DUMP),1)
42   all: dumpinfo
43 else
44   all: compile
45 endif
46
47 ifneq (,$(findstring uml,$(BOARD)))
48   LINUX_KARCH:=um
49 else
50   LINUX_KARCH:=$(shell echo $(ARCH) | sed -e 's/i[3-9]86/i386/' \
51         -e 's/mipsel/mips/' \
52         -e 's/mipseb/mips/' \
53         -e 's/powerpc/ppc/' \
54         -e 's/sh[234]/sh/' \
55         -e 's/armeb/arm/' \
56   )
57 endif
58
59 STAMP_PREPARED:=$(LINUX_DIR)/.prepared
60 STAMP_CONFIGURED:=$(LINUX_DIR)/.configured
61 include $(INCLUDE_DIR)/quilt.mk
62 include $(INCLUDE_DIR)/kernel-defaults.mk
63
64 define Kernel/Prepare
65         $(call Kernel/Prepare/Default)
66 endef
67
68 define Kernel/Configure
69         $(call Kernel/Configure/Default)
70 endef
71
72 define Kernel/CompileModules
73         $(call Kernel/CompileModules/Default)
74 endef
75
76 define Kernel/CompileImage
77         $(call Kernel/CompileImage/Default)
78 endef
79
80 define Kernel/Clean
81         $(call Kernel/Clean/Default)
82 endef
83
84 define BuildKernel
85   ifneq ($(LINUX_SITE),)
86     $(DL_DIR)/$(LINUX_SOURCE):
87                 -mkdir -p $(DL_DIR)
88                 $(SCRIPT_DIR)/download.pl $(DL_DIR) $(LINUX_SOURCE) $(LINUX_KERNEL_MD5SUM) $(LINUX_SITE)
89   endif
90
91   $(STAMP_PREPARED): $(DL_DIR)/$(LINUX_SOURCE)
92         -rm -rf $(KERNEL_BUILD_DIR)
93         -mkdir -p $(KERNEL_BUILD_DIR)
94         $(call Kernel/Prepare)
95         touch $$@
96
97   $(STAMP_CONFIGURED): $(STAMP_PREPARED) $(LINUX_CONFIG) $(GENERIC_LINUX_CONFIG) $(TOPDIR)/.config
98         $(call Kernel/Configure)
99         touch $$@
100
101   $(LINUX_DIR)/.modules: $(STAMP_CONFIGURED) $(LINUX_DIR)/.config FORCE
102         $(call Kernel/CompileModules)
103         touch $$@
104
105   $(LINUX_DIR)/.image: $(STAMP_CONFIGURED) FORCE
106         $(call Kernel/CompileImage)
107         touch $$@
108         
109   mostlyclean: FORCE
110         $(call Kernel/Clean)
111
112   ifeq ($(DUMP),1)
113     dumpinfo:
114                 @echo 'Target: $(BOARD)-$(KERNEL)'
115                 @echo 'Target-Name: $(BOARDNAME) [$(KERNEL)]'
116                 @echo 'Target-Path: $(subst $(TOPDIR)/,,$(PWD))'
117                 @echo 'Target-Arch: $(ARCH)'
118                 @echo 'Target-Features: $(FEATURES)'
119                 @echo 'Linux-Version: $(LINUX_VERSION)'
120                 @echo 'Linux-Release: $(LINUX_RELEASE)'
121                 @echo 'Linux-Kernel-Arch: $(LINUX_KARCH)'
122                 @echo 'Target-Description:'
123                 @getvar $(call shvar,Target/Description)
124                 @echo '@@'
125                 @echo 'Default-Packages: $(DEFAULT_PACKAGES)'
126     ifneq ($(DUMPINFO),)
127                 @$(DUMPINFO)
128     endif
129   endif
130
131   define BuildKernel
132   endef
133 endef
134
135 define Profile/Default
136   NAME:=
137   PACKAGES:=
138 endef
139
140 confname=$(subst .,_,$(subst -,_,$(1)))
141 define Profile
142   $(eval $(call Profile/Default))
143   $(eval $(call Profile/$(1)))
144   $(eval $(call shexport,Profile/$(1)/Config))
145   $(eval $(call shexport,Profile/$(1)/Description))
146   DUMPINFO += \
147         echo "Target-Profile: $(1)"; \
148         echo "Target-Profile-Name: $(NAME)"; \
149         echo "Target-Profile-Packages: $(PACKAGES)"; \
150         if [ -f ./config/profile-$(1) ]; then \
151                 echo "Target-Profile-Kconfig: yes"; \
152         fi; \
153         echo "Target-Profile-Config: "; \
154         getvar "$(call shvar,Profile/$(1)/Config)"; \
155         echo "@@"; \
156         echo "Target-Profile-Description:"; \
157         getvar "$(call shvar,Profile/$(1)/Description)"; \
158         echo "@@"; \
159         echo;
160   ifeq ($(CONFIG_LINUX_$(call confname,$(KERNEL)_$(1))),y)
161     PROFILE=$(1)
162   endif
163 endef
164
165 $(eval $(call shexport,Target/Description))
166
167 download: $(DL_DIR)/$(LINUX_SOURCE)
168 prepare: $(STAMP_CONFIGURED)
169 compile: $(LINUX_DIR)/.modules
170         $(MAKE) -C image compile
171
172 oldconfig menuconfig: $(STAMP_PREPARED) FORCE
173         $(call Kernel/Configure)
174         $(SCRIPT_DIR)/config.pl '+' $(GENERIC_LINUX_CONFIG) $(LINUX_CONFIG) > $(LINUX_DIR)/.config
175         $(MAKE) -C $(LINUX_DIR) $(KERNEL_MAKEOPTS) $@
176         $(SCRIPT_DIR)/config.pl '>' $(GENERIC_LINUX_CONFIG) $(LINUX_DIR)/.config > $(LINUX_CONFIG)
177
178 install: $(LINUX_DIR)/.image
179         $(MAKE) -C image compile install
180
181 clean: FORCE
182         rm -f $(STAMP_DIR)/.linux-compile
183         rm -rf $(KERNEL_BUILD_DIR)
184
185 rebuild: FORCE
186         @$(MAKE) mostlyclean
187         @if [ -f $(LINUX_KERNEL) ]; then \
188                 $(MAKE) clean; \
189         fi
190         @$(MAKE) compile
191
192 image-prereq:
193         $(SUBMAKE) -s -C image prereq
194
195 prereq: image-prereq