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#
# Copyright (C) 2006-2009 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
KERNEL_BUILD_DIR := $(BUILD_DIR_TOOLCHAIN)
BUILD_DIR := $(KERNEL_BUILD_DIR)
STAGING_DIR_HOST:=$(TOOLCHAIN_DIR)
BUILD_DIR_HOST:=$(BUILD_DIR_TOOLCHAIN)
override QUILT:=
override CONFIG_AUTOREBUILD=
include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=linux
PKG_VERSION:=$(LINUX_VERSION)
PKG_SOURCE:=$(LINUX_SOURCE)
PKG_SOURCE_URL:=$(LINUX_SITE)
PKG_BUILD_DIR:=$(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
PKG_MD5SUM:=$(LINUX_KERNEL_MD5SUM)
LINUX_DIR := $(PKG_BUILD_DIR)
include $(INCLUDE_DIR)/host-build.mk
include $(INCLUDE_DIR)/kernel-defaults.mk
ifeq ($(strip $(BOARD)),uml)
LINUX_KARCH:=$(ARCH)
endif
KMAKE := $(MAKE) -C $(PKG_BUILD_DIR) \
ARCH=$(LINUX_KARCH) \
KBUILD_HAVE_NLS=no \
CONFIG_SHELL=$(BASH)
define Build/Prepare/pre/cris
ln -sf $(PKG_BUILD_DIR)/include/asm-cris/arch-v10 $(PKG_BUILD_DIR)/include/asm-cris/arch
ln -sf $(PKG_BUILD_DIR)/include/asm-cris/arch-v10 $(PKG_BUILD_DIR)/arch/cris/arch
endef
define Build/Prepare/pre/powerpc
if [ -d $(PKG_BUILD_DIR)/include/asm-ppc ]; then \
$(CP) $(PKG_BUILD_DIR)/include/asm-ppc/* $(PKG_BUILD_DIR)/include/asm-powerpc/; \
rm -rf $(PKG_BUILD_DIR)/include/asm-ppc; \
ln -s $(PKG_BUILD_DIR)/include/asm-powerpc $(PKG_BUILD_DIR)/include/asm-ppc; \
fi
endef
ifeq ($(strip $(call CompareKernelPatchVer,$(KERNEL_PATCHVER),ge,2.6.18)),1)
define Build/Prepare/all
mkdir -p $(BUILD_DIR_TOOLCHAIN)/linux-dev/usr
$(KMAKE) \
CROSS_COMPILE=$(TARGET_CROSS) \
INSTALL_HDR_PATH="$(BUILD_DIR_TOOLCHAIN)/linux-dev/usr/" \
headers_install
endef
else
define Build/Prepare/all
mkdir -p $(BUILD_DIR_TOOLCHAIN)/linux-dev/usr/include
cp -pLR \
$(PKG_BUILD_DIR)/include/asm \
$(PKG_BUILD_DIR)/include/asm-generic \
$(PKG_BUILD_DIR)/include/asm-$(LINUX_KARCH) \
$(PKG_BUILD_DIR)/include/linux \
$(BUILD_DIR_TOOLCHAIN)/linux-dev/usr/include/
endef
endif
# XXX: the following is needed to build lzma-loader
define Build/Prepare/lzma
$(CP) \
$(PKG_BUILD_DIR)/include/asm-mips/asm.h \
$(PKG_BUILD_DIR)/include/asm-mips/regdef.h \
$(BUILD_DIR_TOOLCHAIN)/linux-dev/usr/include/asm/
endef
# XXX: the following is needed to build final gcc on cris
define Build/Prepare/post/cris
mkdir -p $(BUILD_DIR_TOOLCHAIN)/linux-dev/usr/include/asm/arch
$(CP) \
$(PKG_BUILD_DIR)/include/asm-cris/arch/ptrace.h \
$(BUILD_DIR_TOOLCHAIN)/linux-dev/usr/include/asm/arch/
endef
define Build/Prepare/post/mips
$(call Build/Prepare/lzma)
endef
define Build/Prepare/post/mipsel
$(call Build/Prepare/lzma)
endef
define Build/Prepare
$(call Kernel/Prepare/Default)
ln -sf linux-$(LINUX_VERSION) $(BUILD_DIR_TOOLCHAIN)/linux
$(SED) 's/@expr length/@-expr length/' $(PKG_BUILD_DIR)/Makefile
yes '' | $(KMAKE) oldconfig
$(KMAKE) include/linux/version.h include/asm
if [ -d $(PKG_BUILD_DIR)/arch/$(LINUX_KARCH)/include/asm ]; then \
$(CP) \
$(PKG_BUILD_DIR)/arch/$(LINUX_KARCH)/include/asm/. \
$(PKG_BUILD_DIR)/include/asm-$(LINUX_KARCH)/; \
fi
$(call Build/Prepare/pre/$(ARCH))
$(call Build/Prepare/all)
$(call Build/Prepare/post/$(ARCH))
endef
define Build/Configure
endef
define Build/Compile
endef
define Build/Install
$(CP) $(BUILD_DIR_TOOLCHAIN)/linux-dev/* $(TOOLCHAIN_DIR)/
endef
define Build/Clean
rm -rf \
$(PKG_BUILD_DIR) \
$(BUILD_DIR_TOOLCHAIN)/linux \
$(BUILD_DIR_TOOLCHAIN)/linux-dev
endef
$(eval $(call HostBuild))
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