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