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 oldconfig menuconfig: $(STAMP_PREPARED) FORCE
 171         $(call Kernel/Configure)
 172         $(SCRIPT_DIR)/config.pl '+' $(GENERIC_LINUX_CONFIG) $(LINUX_CONFIG) > $(LINUX_DIR)/.config
 173         $(MAKE) -C $(LINUX_DIR) $(KERNEL_MAKEOPTS) $@
 174         $(SCRIPT_DIR)/config.pl '>' $(GENERIC_LINUX_CONFIG) $(LINUX_DIR)/.config > $(LINUX_CONFIG)
 175
 176 install: $(LINUX_DIR)/.image
 177         $(MAKE) -C image compile install
 178
 179 clean: FORCE
 180         rm -f $(STAMP_DIR)/.linux-compile
 181         rm -rf $(KERNEL_BUILD_DIR)
 182
 183 rebuild: FORCE
 184         @$(MAKE) mostlyclean
 185         @if [ -f $(LINUX_KERNEL) ]; then \
 186                 $(MAKE) clean; \
 187         fi
 188         @$(MAKE) compile
 189
 190 image-prereq:
 191         $(SUBMAKE) -s -C image prereq
 192
 193 prereq: image-prereq