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#############################################################
#
# Setup the kernel headers.  I include a generic package of
# kernel headers here, so you shouldn't need to include your
# own.  Be aware these kernel headers _will_ get blown away
# by a 'make clean' so don't put anything sacred in here...
#
#############################################################
ifneq ($(filter $(TARGETS),kernel-headers),)

VERSION=2
PATCHLEVEL=4
SUBLEVEL=25
LINUX_SITE:=http://www.uclibc.org/downloads/toolchain
LINUX_SOURCE:=kernel-headers-2.4.25.tar.bz2
LINUX_UNPACK_DIR:=$(TOOL_BUILD_DIR)/linux


# Uncomment this for 2.6.x kernel header files
#VERSION=2
#PATCHLEVEL=6
#SUBLEVEL=8
#LINUX_SITE:=http://ep09.pld-linux.org/~mmazur/linux-libc-headers/
#LINUX_SOURCE:=linux-libc-headers-2.6.8.0.tar.bz2
#LINUX_UNPACK_DIR:=$(TOOL_BUILD_DIR)/linux-libc-headers-2.6.8.0



LINUX_DIR:=$(TOOL_BUILD_DIR)/linux

$(DL_DIR)/$(LINUX_SOURCE):
	$(WGET) -P $(DL_DIR) $(LINUX_SITE)/$(LINUX_SOURCE)

$(LINUX_DIR)/.unpacked: $(DL_DIR)/$(LINUX_SOURCE)
	mkdir -p $(TOOL_BUILD_DIR)
	bzcat $(DL_DIR)/$(LINUX_SOURCE) | tar -C $(TOOL_BUILD_DIR) -xvf -
ifneq ($(LINUX_UNPACK_DIR),$(LINUX_DIR))
	mv $(LINUX_UNPACK_DIR) $(LINUX_DIR)
endif
	touch $(LINUX_DIR)/.unpacked

$(LINUX_DIR)/.configured: $(LINUX_DIR)/.unpacked
	rm -f $(LINUX_DIR)/include/asm
	@if [ ! -f $(LINUX_DIR)/Makefile ] ; then \
	    echo -e "VERSION = $(VERSION)\nPATCHLEVEL = $(PATCHLEVEL)\n" > \
		    $(LINUX_DIR)/Makefile; \
	    echo -e "SUBLEVEL = $(SUBLEVEL)\nEXTRAVERSION =\n" >> \
		    $(LINUX_DIR)/Makefile; \
	    echo -e "KERNELRELEASE=\$$(VERSION).\$$(PATCHLEVEL).\$$(SUBLEVEL)\$$(EXTRAVERSION)" >> \
		    $(LINUX_DIR)/Makefile; \
	fi;
	@if [ "$(ARCH)" = "powerpc" ];then \
	    (cd $(LINUX_DIR)/include; ln -fs asm-ppc$(NOMMU) asm;) \
	elif [ "$(ARCH)" = "mips" ];then \
	    (cd $(LINUX_DIR)/include; ln -fs asm-mips$(NOMMU) asm;) \
	elif [ "$(ARCH)" = "mipsel" ];then \
	    (cd $(LINUX_DIR)/include; ln -fs asm-mips$(NOMMU) asm;) \
	elif [ "$(ARCH)" = "arm" ];then \
	    (cd $(LINUX_DIR)/include; ln -fs asm-arm$(NOMMU) asm; \
	     cd asm; \
	     if [ ! -L proc ] ; then \
	     ln -fs proc-armv proc; \
	     ln -fs arch-ebsa285 arch; fi); \
	elif [ "$(ARCH)" = "cris" ];then \
	    (cd $(LINUX_DIR)/include; ln -fs asm-cris asm;) \
	else \
	    (cd $(LINUX_DIR)/include; ln -fs asm-$(ARCH)$(NOMMU) asm;) \
	fi
	touch $(LINUX_DIR)/include/linux/autoconf.h;
	touch $(LINUX_DIR)/.configured

$(LINUX_KERNEL): $(LINUX_DIR)/.configured

kernel-headers: $(LINUX_DIR)/.configured

kernel-headers-source: $(DL_DIR)/$(LINUX_SOURCE)

kernel-headers-clean: clean
	rm -f $(LINUX_KERNEL)
	rm -rf $(LINUX_DIR)

kernel-headers-dirclean:
	rm -rf $(LINUX_DIR)

endif