obsolete-buildroot/make/linux.mk

   1 #############################################################
   2 #
   3 # Linux kernel targets
   4 #
   5 # Note:  If you have any patches to apply, create the directory
   6 # sources/kernel-patches and put your patches in there and number
   7 # them in the order you wish to apply them...  i.e.
   8 #
   9 #   sources/kernel-patches/001-my-special-stuff.bz2
  10 #   sources/kernel-patches/003-gcc-Os.bz2
  11 #   sources/kernel-patches/004_no-warnings.bz2
  12 #   sources/kernel-patches/030-lowlatency-mini.bz2
  13 #   sources/kernel-patches/031-lowlatency-fixes-5.bz2
  14 #   sources/kernel-patches/099-shutup.bz2
  15 #   etc...
  16 #
  17 # these patches will all be applied by the patch-kernel.sh
  18 # script (which will also abort the build if it finds rejects)
  19 #  -Erik
  20 #
  21 #############################################################
  22 ifneq ($(filter $(TARGETS),linux),)
  23
  24 # Version of Linux to download and then apply patches to
  25 DOWNLOAD_LINUX_VERSION=2.4.25
  26 # Version of Linux AFTER patches
  27 LINUX_VERSION=2.4.26-pre5-erik
  28
  29 LINUX_FORMAT=bzImage
  30 #LINUX_FORMAT=images/zImage.prep
  31 LINUX_KARCH:=$(shell echo $(ARCH) | sed -e 's/i[3-9]86/i386/' \
  32         -e 's/mipsel/mips/' \
  33         -e 's/powerpc/ppc/' \
  34         -e 's/sh[234]/sh/' \
  35         )
  36 LINUX_BINLOC=arch/$(LINUX_KARCH)/boot/$(LINUX_FORMAT)
  37
  38 LINUX_DIR=$(BUILD_DIR)/linux-$(LINUX_VERSION)
  39 LINUX_SOURCE=linux-$(DOWNLOAD_LINUX_VERSION).tar.bz2
  40 LINUX_SITE=ftp://ftp.kernel.org/pub/linux/kernel/v2.4
  41 LINUX_KCONFIG=$(SOURCE_DIR)/linux.config
  42 LINUX_KERNEL=$(BUILD_DIR)/buildroot-kernel
  43 # Used by pcmcia-cs and others
  44 LINUX_SOURCE_DIR=$(LINUX_DIR)
  45
  46
  47 $(DL_DIR)/$(LINUX_SOURCE):
  48          $(WGET) -P $(DL_DIR) $(LINUX_SITE)/$(LINUX_SOURCE)
  49
  50 $(LINUX_DIR)/.unpacked: $(DL_DIR)/$(LINUX_SOURCE)
  51         mkdir -p $(LINUX_DIR) $(TOOL_BUILD_DIR)
  52         rm -rf $(LINUX_DIR)
  53         bzcat $(DL_DIR)/$(LINUX_SOURCE) | tar -C $(BUILD_DIR) -xvf -
  54 ifneq ($(DOWNLOAD_LINUX_VERSION),$(LINUX_VERSION))
  55         # Rename the dir from the downloaded version to the AFTER patch version
  56         mv -f $(BUILD_DIR)/linux-$(DOWNLOAD_LINUX_VERSION) $(BUILD_DIR)/linux-$(LINUX_VERSION)
  57 endif
  58         mkdir -p $(SOURCE_DIR)/kernel-patches
  59         $(SOURCE_DIR)/patch-kernel.sh $(LINUX_DIR) $(SOURCE_DIR)/kernel-patches
  60         -(cd $(TOOL_BUILD_DIR); ln -sf $(LINUX_DIR) linux)
  61         touch $(LINUX_DIR)/.unpacked
  62
  63 $(LINUX_KCONFIG):
  64         @if [ ! -f "$(LINUX_KCONFIG)" ] ; then \
  65                 echo ""; \
  66                 echo "You should create a .config for your kernel"; \
  67                 echo "and install it as $(LINUX_KCONFIG)"; \
  68                 echo ""; \
  69                 sleep 5; \
  70         fi;
  71
  72 $(LINUX_DIR)/.configured $(BUILD_DIR)/linux/.configured:  $(LINUX_DIR)/.unpacked  $(LINUX_KCONFIG)
  73         $(SED) "s,^CROSS_COMPILE.*,CROSS_COMPILE=$(KERNEL_CROSS),g;" $(LINUX_DIR)/Makefile
  74         -cp $(LINUX_KCONFIG) $(LINUX_DIR)/.config
  75         $(MAKE) -C $(LINUX_DIR) oldconfig include/linux/version.h
  76         touch $(LINUX_DIR)/.configured
  77
  78 $(LINUX_DIR)/.depend_done:  $(LINUX_DIR)/.configured
  79         $(MAKE) -C $(LINUX_DIR) dep
  80         touch $(LINUX_DIR)/.depend_done
  81
  82 $(LINUX_DIR)/$(LINUX_BINLOC): $(LINUX_DIR)/.depend_done
  83         $(MAKE) -C $(LINUX_DIR) $(LINUX_FORMAT)
  84         $(MAKE) -C $(LINUX_DIR) modules
  85
  86 $(LINUX_KERNEL): $(LINUX_DIR)/$(LINUX_BINLOC)
  87         cp -fa $(LINUX_DIR)/$(LINUX_BINLOC) $(LINUX_KERNEL)
  88         touch -c $(LINUX_KERNEL)
  89
  90 $(TARGET_DIR)/lib/modules/$(LINUX_VERSION)/modules.dep: $(LINUX_KERNEL)
  91         rm -rf $(TARGET_DIR)/lib/modules
  92         rm -f $(TARGET_DIR)/sbin/cardmgr
  93         $(MAKE) -C $(LINUX_DIR) INSTALL_MOD_PATH=$(TARGET_DIR) modules_install
  94         (cd $(TARGET_DIR)/lib/modules; ln -s $(LINUX_VERSION)/kernel/drivers .)
  95
  96 $(STAGING_DIR)/include/linux/version.h: $(LINUX_DIR)/.configured
  97         mkdir -p $(STAGING_DIR)/include
  98         tar -ch -C $(LINUX_DIR)/include -f - linux | tar -xf - -C $(STAGING_DIR)/include/
  99         tar -ch -C $(LINUX_DIR)/include -f - asm | tar -xf - -C $(STAGING_DIR)/include/
 100
 101 linux: $(STAGING_DIR)/include/linux/version.h $(TARGET_DIR)/lib/modules/$(LINUX_VERSION)/modules.dep
 102
 103 linux-source: $(DL_DIR)/$(LINUX_SOURCE)
 104
 105 # This has been renamed so we do _NOT_ by default run this on 'make clean'
 106 linuxclean: clean
 107         rm -f $(LINUX_KERNEL)
 108         -$(MAKE) -C $(LINUX_DIR) clean
 109
 110 linux-dirclean:
 111         rm -rf $(LINUX_DIR)
 112
 113 endif