-LINUX_HEADERS_DIR:=$(TOOL_BUILD_DIR)/linux
+# linux kernel headers for toolchain
+
+LINUX_HEADERS_VERSION=2.4.29
+LINUX_KERNEL_MD5SUM:=fcf8b6bb620467f27b657c1c4a60bbff
+LINUX_HEADERS_SITE=http://www.fi.kernel.org/pub/linux/kernel/v2.4 \
+ http://www.fr.kernel.org/pub/linux/kernel/v2.4 \
+ http://www.kernel.org/pub/linux/kernel/v2.4 \
+ http://www.de.kernel.org/pub/linux/kernel/v2.4
+LINUX_HEADERS_SOURCE=linux-$(LINUX_HEADERS_VERSION).tar.bz2
+LINUX_HEADERS_CONFIG=./linux.config
+LINUX_HEADERS_ARCH:=$(shell echo $(ARCH) | sed -e 's/i[3-9]86/i386/' \
+ -e 's/mipsel/mips/' \
+ -e 's/powerpc/ppc/' \
+ -e 's/sh[234]/sh/' \
+ )
+
+$(DL_DIR)/$(LINUX_HEADERS_SOURCE):
+ -mkdir -p $(DL_DIR)
+ $(SCRIPT_DIR)/download.pl $(DL_DIR) $(LINUX_HEADERS_SOURCE) $(LINUX_KERNEL_MD5SUM) $(LINUX_HEADERS_SITE)
+
+$(LINUX_HEADERS_DIR)/.unpacked: $(DL_DIR)/$(LINUX_HEADERS_SOURCE)
+ mkdir -p $(TOOL_BUILD_DIR)
+ bzcat $(DL_DIR)/$(LINUX_HEADERS_SOURCE) | tar -C $(TOOL_BUILD_DIR) $(TAR_OPTIONS) - \
+ linux-$(LINUX_HEADERS_VERSION)/include \
+ linux-$(LINUX_HEADERS_VERSION)/Makefile \
+ linux-$(LINUX_HEADERS_VERSION)/Rules.make \
+ linux-$(LINUX_HEADERS_VERSION)/arch/$(LINUX_HEADERS_ARCH)/Makefile \
+ linux-$(LINUX_HEADERS_VERSION)/scripts \
+ linux-$(LINUX_HEADERS_VERSION)/arch/$(LINUX_HEADERS_ARCH)/config*.in \
+ linux-$(LINUX_HEADERS_VERSION)/*/*/Config.in \
+ linux-$(LINUX_HEADERS_VERSION)/*/Config.in
+ ln -sf $(LINUX_HEADERS_DIR)-$(LINUX_HEADERS_VERSION) $(LINUX_HEADERS_DIR)
+ touch $(LINUX_HEADERS_DIR)/.unpacked
+
+$(LINUX_HEADERS_DIR)/.configured: $(LINUX_HEADERS_DIR)/.unpacked
+ -cp -af $(LINUX_HEADERS_CONFIG) $(LINUX_HEADERS_DIR)/.config
+ $(MAKE) -C $(LINUX_HEADERS_DIR) ARCH=$(LINUX_HEADERS_ARCH) oldconfig include/linux/version.h
+ touch $(LINUX_HEADERS_DIR)/.configured
+
+kernel-headers: $(LINUX_HEADERS_DIR)/.configured
+
+kernel-headers-source: $(DL_DIR)/$(LINUX_HEADERS_SOURCE)
+
+kernel-headers-clean: clean
+ rm -rf $(LINUX_HEADERS_DIR)
+
+kernel-headers-toolclean:
+ rm -rf $(LINUX_HEADERS_DIR)