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 $$@
 100
 101   $(STAMP_CONFIGURED): $(LINUX_DIR)/.prepared $(LINUX_CONFIG)
 102         $(call Kernel/Configure)
 103         touch $$@
 104
 105   $(LINUX_DIR)/.modules: $(LINUX_DIR)/.configured $(LINUX_DIR)/.config FORCE
 106         $(call Kernel/CompileModules)
 107         touch $$@
 108
 109   $(LINUX_DIR)/.image: $(LINUX_DIR)/.configured FORCE
 110         $(call Kernel/CompileImage)
 111         touch $$@
 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: $(LINUX_DIR)/.configured
 173 compile: $(LINUX_DIR)/.modules
 174 menuconfig: $(LINUX_DIR)/.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) menuconfig
 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