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