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