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- #############################################################
- #
- # Linux kernel targets
- #
- # Note: If you have any patches to apply, create the directory
- # sources/kernel-patches and put your patches in there and number
- # them in the order you wish to apply them... i.e.
- #
- # sources/kernel-patches/001-my-special-stuff.bz2
- # sources/kernel-patches/003-gcc-Os.bz2
- # sources/kernel-patches/004_no-warnings.bz2
- # sources/kernel-patches/030-lowlatency-mini.bz2
- # sources/kernel-patches/031-lowlatency-fixes-5.bz2
- # sources/kernel-patches/099-shutup.bz2
- # etc...
- #
- # these patches will all be applied by the patch-kernel.sh
- # script (which will also abort the build if it finds rejects)
- # -Erik
- #
- #############################################################
- ifneq ($(filter $(TARGETS),linux),)
- # Version of Linux to download and then apply patches to
- DOWNLOAD_LINUX_VERSION=2.4.20
- # Version of Linux AFTER patches
- LINUX_VERSION=2.4.21-pre4
- LINUX_FORMAT=bzImage
- LINUX_BINLOC=arch/$(ARCH)/boot/$(LINUX_FORMAT)
- #LINUX_FORMAT=zImage
- #LINUX_BINLOC=arch/ppc/boot/images/zImage.prep
- LINUX_DIR=$(BUILD_DIR)/linux-$(LINUX_VERSION)
- LINUX_SOURCE=linux-$(DOWNLOAD_LINUX_VERSION).tar.bz2
- LINUX_SITE=ftp://ftp.kernel.org/pub/linux/kernel/v2.4
- LINUX_KCONFIG=$(SOURCE_DIR)/linux.config
- LINUX_KERNEL=$(BUILD_DIR)/buildroot-kernel
- # Used by pcmcia-cs and others
- LINUX_SOURCE_DIR=$(LINUX_DIR)
- $(DL_DIR)/$(LINUX_SOURCE):
- $(WGET) -P $(DL_DIR) $(LINUX_SITE)/$(LINUX_SOURCE)
- $(LINUX_DIR)/.unpacked: $(DL_DIR)/$(LINUX_SOURCE)
- rm -rf $(LINUX_DIR)
- bzcat $(DL_DIR)/$(LINUX_SOURCE) | tar -C $(BUILD_DIR) -xvf -
- ifneq ($(DOWNLOAD_LINUX_VERSION),$(LINUX_VERSION))
- # Rename the dir from the downloaded version to the AFTER patch version
- mv -f $(BUILD_DIR)/linux-$(DOWNLOAD_LINUX_VERSION) $(BUILD_DIR)/linux-$(LINUX_VERSION)
- endif
- mkdir -p $(SOURCE_DIR)/kernel-patches
- $(SOURCE_DIR)/patch-kernel.sh $(LINUX_DIR) $(SOURCE_DIR)/kernel-patches
- -(cd $(BUILD_DIR); ln -sf $(LINUX_DIR) linux)
- touch $(LINUX_DIR)/.unpacked
- $(LINUX_KCONFIG):
- @if [ ! -f "$(LINUX_KCONFIG)" ] ; then \
- echo ""; \
- echo "You should create a .config for your kernel"; \
- echo "and install it as $(LINUX_KCONFIG)"; \
- echo ""; \
- sleep 5; \
- fi;
- $(LINUX_DIR)/.configured $(BUILD_DIR)/linux/.configured: $(LINUX_DIR)/.unpacked $(LINUX_KCONFIG)
- perl -i -p -e "s,^CROSS_COMPILE.*,CROSS_COMPILE=$(KERNEL_CROSS),g;" $(LINUX_DIR)/Makefile
- -cp $(LINUX_KCONFIG) $(LINUX_DIR)/.config
- $(MAKE) -C $(LINUX_DIR) oldconfig include/linux/version.h
- touch $(LINUX_DIR)/.configured
- $(LINUX_DIR)/.depend_done: $(LINUX_DIR)/.configured
- $(MAKE) -C $(LINUX_DIR) dep
- touch $(LINUX_DIR)/.depend_done
- $(LINUX_DIR)/$(LINUX_BINLOC): $(LINUX_DIR)/.depend_done
- $(MAKE) -C $(LINUX_DIR) $(LINUX_FORMAT)
- $(MAKE) -C $(LINUX_DIR) modules
- $(LINUX_KERNEL): $(LINUX_DIR)/$(LINUX_BINLOC)
- cp -fa $(LINUX_DIR)/$(LINUX_BINLOC) $(LINUX_KERNEL)
- touch -c $(LINUX_KERNEL)
- $(TARGET_DIR)/lib/modules/$(LINUX_VERSION)/modules.dep: $(LINUX_KERNEL)
- rm -rf $(TARGET_DIR)/lib/modules
- rm -f $(TARGET_DIR)/sbin/cardmgr
- $(MAKE) -C $(LINUX_DIR) INSTALL_MOD_PATH=$(TARGET_DIR) modules_install
- (cd $(TARGET_DIR)/lib/modules; ln -s $(LINUX_VERSION)/kernel/drivers .)
- $(STAGING_DIR)/include/linux/version.h: $(LINUX_DIR)/.configured
- mkdir -p $(STAGING_DIR)/include
- tar -ch -C $(LINUX_DIR)/include -f - linux | tar -xf - -C $(STAGING_DIR)/include/
- tar -ch -C $(LINUX_DIR)/include -f - asm | tar -xf - -C $(STAGING_DIR)/include/
- linux: $(STAGING_DIR)/include/linux/version.h $(TARGET_DIR)/lib/modules/$(LINUX_VERSION)/modules.dep
- # This has been renamed so we do _NOT_ by default run this on 'make clean'
- linuxclean: clean
- rm -f $(LINUX_KERNEL)
- -$(MAKE) -C $(LINUX_DIR) clean
- linux-dirclean:
- rm -rf $(LINUX_DIR)
- endif
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