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126 lines
4.5 KiB
Makefile
126 lines
4.5 KiB
Makefile
#
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# Copyright (C) 2006-2007 OpenWrt.org
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#
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# This is free software, licensed under the GNU General Public License v2.
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# See /LICENSE for more information.
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#
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KERNELNAME=
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ifneq (,$(findstring x86,$(BOARD)))
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KERNELNAME="bzImage"
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endif
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ifneq (,$(findstring rdc,$(BOARD)))
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KERNELNAME="bzImage"
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endif
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ifneq (,$(findstring avr32,$(BOARD)))
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KERNELNAME="uImage"
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endif
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KERNEL_MAKEOPTS := -C $(LINUX_DIR) \
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CROSS_COMPILE="$(KERNEL_CROSS)" \
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ARCH="$(LINUX_KARCH)" \
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KBUILD_HAVE_NLS=no \
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CONFIG_SHELL="$(BASH)"
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INITRAMFS_EXTRA_FILES ?= $(GENERIC_PLATFORM_DIR)/image/initramfs-base-files.txt
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ifneq (,$(KERNEL_CC))
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KERNEL_MAKEOPTS += CC="$(KERNEL_CC)"
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endif
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# defined in quilt.mk
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Kernel/Patch:=$(Kernel/Patch/Default)
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ifeq ($(strip $(CONFIG_EXTERNAL_KERNEL_TREE)),"")
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ifeq ($(strip $(CONFIG_KERNEL_GIT_CLONE_URI)),"")
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define Kernel/Prepare/Default
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bzcat $(DL_DIR)/$(LINUX_SOURCE) | $(TAR) -C $(KERNEL_BUILD_DIR) $(TAR_OPTIONS)
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$(Kernel/Patch)
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touch $(LINUX_DIR)/.quilt_used
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endef
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else
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ifeq ($(strip $(CONFIG_KERNEL_GIT_LOCAL_REPOSITORY)),"")
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define Kernel/Prepare/Default
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git clone $(CONFIG_KERNEL_GIT_CLONE_URI) $(LINUX_DIR)
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endef
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else
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define Kernel/Prepare/Default
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git clone --reference $(CONFIG_KERNEL_GIT_LOCAL_REPOSITORY) $(CONFIG_KERNEL_GIT_CLONE_URI) $(LINUX_DIR)
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endef
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endif
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endif
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else
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define Kernel/Prepare/Default
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mkdir -p $(KERNEL_BUILD_DIR)
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if [ -d $(LINUX_DIR) ]; then \
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rmdir $(LINUX_DIR); \
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fi
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ln -s $(CONFIG_EXTERNAL_KERNEL_TREE) $(LINUX_DIR)
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endef
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endif
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ifeq ($(KERNEL),2.6)
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ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
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define Kernel/SetInitramfs
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mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
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grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
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echo 'CONFIG_INITRAMFS_SOURCE="$(strip $(TARGET_DIR) $(INITRAMFS_EXTRA_FILES))"' >> $(LINUX_DIR)/.config
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echo 'CONFIG_INITRAMFS_ROOT_UID=$(shell id -u)' >> $(LINUX_DIR)/.config
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echo 'CONFIG_INITRAMFS_ROOT_GID=$(shell id -g)' >> $(LINUX_DIR)/.config
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echo 'CONFIG_INITRAMFS_COMPRESSION_NONE=y' >> $(LINUX_DIR)/.config
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echo '# CONFIG_INITRAMFS_COMPRESSION_LZMA is not set' >> $(LINUX_DIR)/.config
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endef
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else
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define Kernel/SetInitramfs
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mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
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grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
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echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config
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endef
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endif
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endif
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define Kernel/Configure/2.4
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$(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
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$(_SINGLE)$(MAKE) $(KERNEL_MAKEOPTS) oldconfig include/linux/compile.h include/linux/version.h
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$(_SINGLE)$(MAKE) $(KERNEL_MAKEOPTS) dep
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endef
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define Kernel/Configure/2.6
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-$(_SINGLE)$(MAKE) $(KERNEL_MAKEOPTS) oldconfig prepare scripts
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endef
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define Kernel/Configure/Default
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$(LINUX_CONFCMD) > $(LINUX_DIR)/.config.target
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echo "$(if $(CONFIG_KERNEL_KALLSYMS),CONFIG_KALLSYMS=y,# CONFIG_KALLSYMS is not set)" >> $(LINUX_DIR)/.config.target
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echo "$(if $(CONFIG_KERNEL_PROFILING),CONFIG_PROFILING=y,# CONFIG_PROFILING is not set)" >> $(LINUX_DIR)/.config.target
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echo "# CONFIG_KALLSYMS_EXTRA_PASS is not set" >> $(LINUX_DIR)/.config.target
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echo "# CONFIG_KALLSYMS_ALL is not set" >> $(LINUX_DIR)/.config.target
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echo "# CONFIG_KPROBES is not set" >> $(LINUX_DIR)/.config.target
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$(SED) 's,.*CONFIG_AEABI.*,$(if $(CONFIG_EABI_SUPPORT),CONFIG_AEABI=y,# CONFIG_AEABI is not set),' $(LINUX_DIR)/.config.target
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$(if $(CONFIG_EABI_SUPPORT),echo '# CONFIG_OABI_COMPAT is not set' >> $(LINUX_DIR)/.config.target)
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$(SCRIPT_DIR)/metadata.pl kconfig $(TMP_DIR)/.packageinfo $(TOPDIR)/.config > $(LINUX_DIR)/.config.override
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$(SCRIPT_DIR)/kconfig.pl 'm+' $(LINUX_DIR)/.config.target $(LINUX_DIR)/.config.override > $(LINUX_DIR)/.config
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$(call Kernel/SetInitramfs)
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$(call Kernel/Configure/$(KERNEL))
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rm -rf $(KERNEL_BUILD_DIR)/modules
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endef
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define Kernel/CompileModules/Default
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rm -f $(LINUX_DIR)/vmlinux $(LINUX_DIR)/System.map
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+$(MAKE) $(KERNEL_MAKEOPTS) modules
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endef
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OBJCOPY_STRIP = -R .reginfo -R .notes -R .note -R .comment -R .mdebug -R .note.gnu.build-id
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define Kernel/CompileImage/Default
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$(if $(CONFIG_TARGET_ROOTFS_INITRAMFS),,rm -f $(TARGET_DIR)/init)
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+$(MAKE) $(KERNEL_MAKEOPTS) $(KERNELNAME)
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$(KERNEL_CROSS)objcopy -O binary $(OBJCOPY_STRIP) -S $(LINUX_DIR)/vmlinux $(LINUX_KERNEL)
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$(KERNEL_CROSS)objcopy $(OBJCOPY_STRIP) -S $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/vmlinux.elf
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endef
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define Kernel/Clean/Default
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rm -f $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/.configured
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rm -f $(LINUX_KERNEL)
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$(_SINGLE)$(MAKE) -C $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) clean
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endef
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