+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 are needed to build a cris toolchain
+define Build/Prepare/post/cris
+ $(CP) \
+ $(PKG_BUILD_DIR)/include/linux/user.h \
+ $(BUILD_DIR_TOOLCHAIN)/linux-dev/usr/include/linux/
+ $(CP) \
+ $(PKG_BUILD_DIR)/include/asm-cris/elf.h \
+ $(PKG_BUILD_DIR)/include/asm-cris/page.h \
+ $(PKG_BUILD_DIR)/include/asm-cris/user.h \
+ $(BUILD_DIR_TOOLCHAIN)/linux-dev/usr/include/asm/
+ mkdir -p $(BUILD_DIR_TOOLCHAIN)/linux-dev/usr/include/asm/arch
+ $(CP) \
+ $(PKG_BUILD_DIR)/include/asm-cris/arch/elf.h \
+ $(PKG_BUILD_DIR)/include/asm-cris/arch/page.h \
+ $(PKG_BUILD_DIR)/include/asm-cris/arch/ptrace.h \
+ $(PKG_BUILD_DIR)/include/asm-cris/arch/user.h \
+ $(BUILD_DIR_TOOLCHAIN)/linux-dev/usr/include/asm/arch/
+ $(CP) \
+ $(PKG_BUILD_DIR)/include/asm-generic/memory_model.h \
+ $(PKG_BUILD_DIR)/include/asm-generic/page.h \
+ $(BUILD_DIR_TOOLCHAIN)/linux-dev/usr/include/asm-generic/
+endef
+
+define Build/Prepare/post/mips
+ $(call Build/Prepare/lzma)
+endef
+
+define Build/Prepare/post/mipsel
+ $(call Build/Prepare/lzma)
+endef
+