target/linux/kernel.mk

   1 LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.bz2
   2 LINUX_SITE=http://www.us.kernel.org/pub/linux/kernel/v$(KERNEL) \
   3            http://www.us.kernel.org/pub/linux/kernel/v$(KERNEL) \
   4            http://www.kernel.org/pub/linux/kernel/v$(KERNEL) \
   5            http://www.de.kernel.org/pub/linux/kernel/v$(KERNEL)
   6
   7 KERNEL_IDIR:=$(LINUX_BUILD_DIR)/kernel-ipkg
   8
   9 $(TARGETS): $(PACKAGE_DIR)
  10
  11 $(PACKAGE_DIR):
  12         mkdir -p $(PACKAGE_DIR)
  13
  14 $(DL_DIR)/$(LINUX_SOURCE):
  15         -mkdir -p $(DL_DIR)
  16         $(SCRIPT_DIR)/download.pl $(DL_DIR) $(LINUX_SOURCE) $(LINUX_KERNEL_MD5SUM) $(LINUX_SITE)
  17
  18 $(LINUX_DIR)/.unpacked: $(DL_DIR)/$(LINUX_SOURCE)
  19         -mkdir -p $(LINUX_BUILD_DIR)
  20         bzcat $(DL_DIR)/$(LINUX_SOURCE) | tar -C $(LINUX_BUILD_DIR) $(TAR_OPTIONS) -
  21         touch $@
  22
  23 ifeq ($(KERNEL),2.4)
  24 $(LINUX_DIR)/.configured: $(LINUX_DIR)/.patched
  25         $(SED) "s,^CROSS_COMPILE.*,CROSS_COMPILE=$(KERNEL_CROSS),g;" \
  26           $(LINUX_DIR)/Makefile  \
  27           $(LINUX_DIR)/arch/*/Makefile
  28         $(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
  29         $(MAKE) -C $(LINUX_DIR) ARCH=$(LINUX_KARCH) oldconfig include/linux/compile.h include/linux/version.h
  30         touch $@
  31
  32 $(LINUX_DIR)/.depend_done: $(LINUX_DIR)/.configured
  33         $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" ARCH=$(LINUX_KARCH) dep
  34         touch $@
  35
  36 $(LINUX_DIR)/vmlinux: $(LINUX_DIR)/.depend_done
  37 else
  38 $(LINUX_DIR)/.configured: $(LINUX_DIR)/.patched
  39         $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" ARCH=$(LINUX_KARCH) oldconfig prepare scripts
  40         touch $@
  41 endif
  42
  43 $(LINUX_DIR)/vmlinux: $(STAMP_DIR)/.linux-compile FORCE
  44         $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" ARCH=$(LINUX_KARCH) PATH=$(TARGET_PATH)
  45
  46 $(LINUX_KERNEL): $(LINUX_DIR)/vmlinux
  47         $(TARGET_CROSS)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S $< $@
  48         touch -c $(LINUX_KERNEL)
  49
  50 $(LINUX_DIR)/.modules_done:
  51         rm -rf $(LINUX_BUILD_DIR)/modules
  52         $(MAKE) -C "$(LINUX_DIR)" CROSS_COMPILE="$(KERNEL_CROSS)" ARCH=$(LINUX_KARCH) PATH="$(TARGET_PATH)" modules
  53         $(MAKE) -C "$(LINUX_DIR)" CROSS_COMPILE="$(KERNEL_CROSS)" DEPMOD=true INSTALL_MOD_PATH=$(LINUX_BUILD_DIR)/modules modules_install
  54         touch $(LINUX_DIR)/.modules_done
  55
  56 $(STAMP_DIR)/.linux-compile:
  57         @$(MAKE) $(LINUX_DIR)/.modules_done $(TARGETS) $(KERNEL_IPKG)
  58         ln -sf $(LINUX_BUILD_DIR)/linux-$(LINUX_VERSION) $(BUILD_DIR)/linux
  59         touch $@
  60
  61 $(KERNEL_IPKG):
  62         rm -rf $(KERNEL_IDIR)
  63         mkdir -p $(KERNEL_IDIR)/etc
  64         $(SCRIPT_DIR)/make-ipkg-dir.sh $(KERNEL_IDIR) ../control/kernel.control $(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE) $(ARCH)
  65         if [ -f ./config/$(BOARD).modules ]; then \
  66                 cp ./config/$(BOARD).modules $(KERNEL_IDIR)/etc/modules; \
  67         fi
  68         $(IPKG_BUILD) $(KERNEL_IDIR) $(LINUX_BUILD_DIR)
  69
  70 $(BUILD_DIR)/kernel.mk: FORCE
  71         echo "BOARD:=$(BOARD)" > $@
  72         echo "LINUX_VERSION:=$(LINUX_VERSION)" >> $@
  73         echo "LINUX_RELEASE:=$(LINUX_RELEASE)" >> $@
  74
  75 source: $(DL_DIR)/$(LINUX_SOURCE)
  76 prepare: $(BUILD_DIR)/kernel.mk
  77         @mkdir -p $(STAMP_DIR) $(PACKAGE_DIR)
  78         @$(MAKE) $(LINUX_DIR)/.configured
  79
  80 compile: prepare $(STAMP_DIR)/.linux-compile
  81
  82 install: compile $(LINUX_KERNEL)
  83
  84 mostlyclean:
  85         rm -f $(STAMP_DIR)/.linux-compile
  86         rm -f $(LINUX_BUILD_DIR)/linux-$(LINUX_VERSION)/.modules_done
  87         rm -f $(LINUX_BUILD_DIR)/linux-$(LINUX_VERSION)/.drivers-unpacked
  88         $(MAKE) -C $(LINUX_BUILD_DIR)/linux-$(LINUX_VERSION) clean
  89         rm -f $(LINUX_KERNEL)
  90
  91 rebuild:
  92         -$(MAKE) mostlyclean
  93         if [ -f $(LINUX_KERNEL) ]; then \
  94                 $(MAKE) clean; \
  95         fi
  96         $(MAKE) compile $(MAKE_TRACE)
  97
  98 clean:
  99         rm -f $(STAMP_DIR)/.linux-compile
 100         rm -rf $(LINUX_BUILD_DIR)
 101         rm -f $(TARGETS)
 102