# -*- makefile -*- : Force emacs to use Makefile mode
# This file contains various boring housekeeping functions that would
# otherwise seriously clutter up the main Makefile.
# Objects to be removed by "make clean"
#
CLEANUP := $(BIN)/*.* # *.* to avoid catching the "CVS" directory
# Version number calculations
#
VERSION_MAJOR = 0
VERSION_MINOR = 5
VERSION_PATCH = 1
EXTRAVERSION =
MM_VERSION = $(VERSION_MAJOR).$(VERSION_MINOR)
VERSION = $(MM_VERSION).$(VERSION_PATCH)$(EXTRAVERSION)
CFLAGS += -DVERSION_MAJOR=$(VERSION_MAJOR) \
-DVERSION_MINOR=$(VERSION_MINOR) \
-DVERSION=\"$(VERSION)\"
IDENT = '$(@F) $(VERSION) (GPL) etherboot.org'
version :
@$(ECHO) $(VERSION)
# Check for tools that can cause failed builds
#
.toolcheck : Makefile Config
@if $(CC) -v 2>&1 | grep -is 'gcc version 2\.96' > /dev/null; then \
$(ECHO) 'gcc 2.96 is unsuitable for compiling Etherboot'; \
$(ECHO) 'Use gcc 2.95 or gcc 3.x instead'; \
exit 1; \
fi
@if [ `perl -e 'use bytes; print chr(255)' | wc -c` = 2 ]; then \
$(ECHO) 'Your Perl version has a Unicode handling bug'; \
$(ECHO) 'Execute this command before compiling Etherboot:'; \
$(ECHO) 'export LANG=$${LANG%.UTF-8}'; \
exit 1; \
fi
@$(TOUCH) $@
VERYCLEANUP += .toolcheck
# Find a usable "echo -e" substitute.
#
TAB := $(shell printf "\t")
ifeq ($(shell echo '\t'),$(TAB))
ECHO_E ?= echo
endif
ifeq ($(shell echo -e '\t'),$(TAB))
ECHO_E ?= echo -e
endif
ifeq ($(shell /bin/echo '\t'),$(TAB))
ECHO_E ?= /bin/echo
endif
ifeq ($(shell /bin/echo -e '\t'),$(TAB))
ECHO_E ?= /bin/echo -e
endif
.echocheck :
ifdef ECHO_E
$(TOUCH) $@
else
@echo "No usable \"echo -e\" substitute found"
@exit 1
endif
VERYCLEANUP += .echocheck
echo :
@$(ECHO) "Using \"$(ECHO_E)\" for \"echo -e\""
# Build verbosity
#
ifeq ($(V),1)
Q =
QM = @\#
else
Q = @
QM = @
endif
# Check for an old version of gas (binutils 2.9.1)
#
OLDGAS := $(shell $(AS) --version | grep -q '2\.9\.1' && $(ECHO) -DGAS291)
CFLAGS += $(OLDGAS)
oldgas :
@$(ECHO) $(oldgas)
# compiler.h is needed for our linking and debugging system
#
CFLAGS += -include compiler.h
# config/%.h files are generated from config.h using mkconfig.pl
config/%.h : config.h
$(MKCONFIG) $<
CLEANUP += config/*.h
# SRCDIRS lists all directories containing source files.
srcdirs :
@$(ECHO) $(SRCDIRS)
# SRCS lists all .c or .S files found in any SRCDIR
#
SRCS += $(wildcard $(patsubst %,%/*.c,$(SRCDIRS)))
SRCS += $(wildcard $(patsubst %,%/*.S,$(SRCDIRS)))
srcs :
@$(ECHO) $(SRCS)
# AUTO_SRCS lists all files in SRCS that are not mentioned in
# NON_AUTO_SRCS. Files should be added to NON_AUTO_SRCS if they
# cannot be built using the standard build template.
#
AUTO_SRCS = $(filter-out $(NON_AUTO_SRCS),$(SRCS))
autosrcs :
@$(ECHO) $(AUTO_SRCS)
# We automatically generate rules for any file mentioned in AUTO_SRCS
# using the following set of templates. It would be cleaner to use
# $(eval ...), but this function exists only in GNU make >= 3.80.
# src_template : generate Makefile rules for a given source file
#
# $(1) is the full path to the source file (e.g. "drivers/net/rtl8139.c")
# $(2) is the full path to the .d file (e.g. "bin/deps/drivers/net/rtl8139.d")
# $(3) is the source type (e.g. "c")
# $(4) is the source base name (e.g. "rtl8139")
#
define src_template
@$(ECHO) "Generating Makefile rules for $(1)"
@$(MKDIR) -p $(dir $(2))
@$(RM) $(2)
@$(TOUCH) $(2)
$(foreach OBJ,$(if $(OBJS_$(4)),$(OBJS_$(4)),$(4)), \
$(call obj_template,$(1),$(2),$(3),$(OBJ)))
@$(PARSEROM) $(1) >> $(2)
endef
# obj_template : generate Makefile rules for a given resultant object
# of a particular source file. (We can have multiple objects per
# source file via the OBJS_xxx list.)
#
# $(1) is the full path to the source file (e.g. "drivers/net/rtl8139.c")
# $(2) is the full path to the .d file (e.g. "bin/deps/drivers/net/rtl8139.d")
# $(3) is the source type (e.g. "c")
# $(4) is the object name (e.g. "rtl8139")
#
define obj_template
@$(CPP) $(CFLAGS) $(CFLAGS_$(3)) $(CFLAGS_$(4)) -DOBJECT=$(4) \
-Wno-error -M $(1) -MT "$(4)_DEPS" -MG -MP | \
sed 's/_DEPS\s*:/_DEPS =/' >> $(2)
@$(ECHO_E) '\n$$(BIN)/$(4).o : $(1) $$(MAKEDEPS) $$($(4)_DEPS)' \
'\n\t$$(QM)$(ECHO) " [BUILD] $$@"\n' \
'\n\t$$(RULE_$(3))\n' \
'\nBOBJS += $$(BIN)/$(4).o\n' \
$(foreach TGT,$(DEBUG_TARGETS), \
$(if $(RULE_$(3)_to_$(TGT)), \
'\n$$(BIN)/$(4).$(TGT) : $(1) $$(MAKEDEPS) $$($(4)_DEPS)' \
'\n\t$$(QM)$(ECHO) " [BUILD] $$@"\n' \
'\n\t$$(RULE_$(3)_to_$(TGT))\n' \
'\n$(TGT)_OBJS += $$(BIN)/$(4).$(TGT)\n' ) ) \
'\n$(2) : $$($(4)_DEPS)\n' \
'\nTAGS : $$($(4)_DEPS)\n' \
>> $(2)
endef
# Rule to generate the Makefile rules files to be included
#
$(BIN)/deps/%.d : % $(MAKEDEPS) $(PARSEROM)
$(if $(filter $(AUTO_SRCS),$<),$(call src_template,$<,$@,$(subst .,,$(suffix $<)),$(basename $(notdir $<))),@$(ECHO) 'ERROR: $< is not an AUTO_SRC' ; exit 1)
# Calculate and include the list of Makefile rules files
#
AUTO_DEPS = $(patsubst %,$(BIN)/deps/%.d,$(AUTO_SRCS))
include $(AUTO_DEPS)
autodeps :
@$(ECHO) $(AUTO_DEPS)
VERYCLEANUP += $(BIN)/deps
# The following variables are created by the Makefile rules files
#
bobjs :
@$(ECHO) $(BOBJS)
drivers :
@$(ECHO) $(DRIVERS)
.PHONY : drivers
roms :
@$(ECHO) $(ROMS)
# Generate the NIC file from the parsed source files. The NIC file is
# only for rom-o-matic.
#
$(BIN)/NIC : $(AUTO_DEPS)
@$(ECHO) '# This is an automatically generated file, do not edit' > $@
@$(ECHO) '# It does not affect anything in the build, ' \
'it is only for rom-o-matic' >> $@
@$(ECHO) >> $@
@perl -ne 'chomp; print "$$1\n" if /\# NIC\t(.*)$$/' $^ >> $@
CLEANUP += $(BIN)/NIC
# Analyse a target name (e.g. "bin/dfe538--prism2_pci.zrom.tmp") and
# derive the variables:
#
# TGT_ELEMENTS : the elements of the target (e.g. "dfe538 prism2_pci")
# TGT_PREFIX : the prefix type (e.g. "zrom")
# TGT_DRIVERS : the driver for each element (e.g. "rtl8139 prism2_pci")
# TGT_ROM_NAME : the ROM name (e.g. "dfe538")
# TGT_MEDIA : the media type (e.g. "rom")
#
DRIVERS_gpxe = $(DRIVERS)
CARD_DRIVER = $(firstword $(DRIVER_$(1)) $(1))
TGT_ELEMENTS = $(subst --, ,$(firstword $(subst ., ,$(notdir $@))))
TGT_PREFIX = $(word 2,$(subst ., ,$(notdir $@)))
TGT_ROM_NAME = $(firstword $(TGT_ELEMENTS))
TGT_DRIVERS = $(strip $(if $(DRIVERS_$(TGT_ROM_NAME)), \
$(DRIVERS_$(TGT_ROM_NAME)), \
$(foreach TGT_ELEMENT,$(TGT_ELEMENTS), \
$(call CARD_DRIVER,$(TGT_ELEMENT))) ))
TGT_MEDIA = $(subst z,,$(TGT_PREFIX))
# Look up ROM IDs for the current target
# (e.g. "bin/dfe538--prism2_pci.zrom.tmp") and derive the variables:
#
# TGT_PCI_VENDOR : the PCI vendor ID (e.g. "0x1186")
# TGT_PCI_DEVICE : the PCI device ID (e.g. "0x1300")
#
TGT_PCI_VENDOR = $(PCI_VENDOR_$(TGT_ROM_NAME))
TGT_PCI_DEVICE = $(PCI_DEVICE_$(TGT_ROM_NAME))
# Calculate link-time options for the current target
# (e.g. "bin/dfe538--prism2_pci.zrom.tmp") and derive the variables:
#
# TGT_LD_DRIVERS : symbols to require in order to drag in the relevant drivers
# (e.g. "obj_rtl8139 obj_prism2_pci")
# TGT_LD_IDS : symbols to define in order to fill in ID structures in the
# ROM header (e.g."pci_vendor_id=0x1186 pci_device_id=0x1300")
#
TGT_LD_DRIVERS = $(subst -,_,$(patsubst %,obj_%,$(TGT_DRIVERS)))
TGT_LD_PREFIX = obj_$(TGT_PREFIX)prefix
TGT_LD_IDS = $(if $(TGT_PCI_VENDOR),pci_vendor_id=$(TGT_PCI_VENDOR)) \
$(if $(TGT_PCI_DEVICE),pci_device_id=$(TGT_PCI_DEVICE))
# Calculate linker flags based on link-time options for the current
# target type (e.g. "bin/dfe538--prism2_pci.zrom.tmp") and derive the
# variables:
#
# TGT_LD_FLAGS : target-specific flags to pass to linker (e.g.
# "-u obj_zpciprefix -u obj_rtl8139 -u obj_prism2_pci
# --defsym pci_vendor=0x1186 --defsym pci_device=0x1300")
#
TGT_LD_FLAGS = $(foreach SYM,$(TGT_LD_PREFIX) $(TGT_LD_DRIVERS) obj_config,\
-u $(SYM) --defsym check_$(SYM)=$(SYM) ) \
$(patsubst %,--defsym %,$(TGT_LD_IDS))
# Calculate makerom flags for the specific target
# (e.g. "bin/dfe538--prism2_pci.zrom.tmp") and derive the variables:
#
# TGT_MAKEROM_FLAGS : target-specific flags for makerom (e.g.
# "-p 0x1186,0x1300")
#
TGT_MAKEROM_FLAGS = $(strip $(MAKEROM_FLAGS_$(TGT_ROM_NAME)) \
$(if $(TGT_PCI_VENDOR),$(strip -p $(TGT_PCI_VENDOR),$(TGT_PCI_DEVICE))))
# Calculate list of debugging versions of objects to be included in
# the target.
#
COMMA := ,
DEBUG_LIST = $(subst $(COMMA), ,$(DEBUG))
DEBUG_OBJ_LEVEL = $(firstword $(word 2,$(subst :, ,$(1))) 1)
DEBUG_OBJ_BASE = $(word 1,$(subst :, ,$(1))).dbg$(call DEBUG_OBJ_LEVEL,$(1))
DEBUG_OBJ = $(BIN)/$(call DEBUG_OBJ_BASE,$(1)).o
DEBUG_ORIG_OBJ = $(BIN)/$(word 1,$(subst :, ,$(1))).o
DEBUG_OBJS = $(foreach D,$(DEBUG_LIST),$(call DEBUG_OBJ,$(D)))
DEBUG_ORIG_OBJS = $(foreach D,$(DEBUG_LIST),$(call DEBUG_ORIG_OBJ,$(D)))
BLIB_OBJS = $(DEBUG_OBJS) $(filter-out $(DEBUG_ORIG_OBJS),$(BOBJS))
# Print out all derived information for a given target.
#
$(BIN)/%.info :
@$(ECHO) 'Elements : $(TGT_ELEMENTS)'
@$(ECHO) 'Prefix : $(TGT_PREFIX)'
@$(ECHO) 'Drivers : $(TGT_DRIVERS)'
@$(ECHO) 'ROM name : $(TGT_ROM_NAME)'
@$(ECHO) 'Media : $(TGT_MEDIA)'
@$(ECHO)
@$(ECHO) 'PCI vendor : $(TGT_PCI_VENDOR)'
@$(ECHO) 'PCI device : $(TGT_PCI_DEVICE)'
@$(ECHO)
@$(ECHO) 'LD driver symbols : $(TGT_LD_DRIVERS)'
@$(ECHO) 'LD prefix symbols : $(TGT_LD_PREFIX)'
@$(ECHO) 'LD ID symbols : $(TGT_LD_IDS)'
@$(ECHO)
@$(ECHO) 'LD target flags : $(TGT_LD_FLAGS)'
@$(ECHO)
@$(ECHO) 'makerom target flags : $(TGT_MAKEROM_FLAGS)'
@$(ECHO)
@$(ECHO) 'Debugging objects : $(DEBUG_OBJS)'
@$(ECHO) 'Replaced objects : $(DEBUG_ORIG_OBJS)'
# List of objects included in the last build of blib. This is needed
# in order to correctly rebuild blib whenever the list of objects
# changes.
#
BLIB_LIST = $(BIN)/.blib.list
ifneq ($(shell cat $(BLIB_LIST)),$(BLIB_OBJS))
$(shell $(ECHO) "$(BLIB_OBJS)" > $(BLIB_LIST))
endif
$(BLIB_LIST) :
VERYCLEANUP += $(BLIB_LIST)
# Library of all objects
#
BLIB = $(BIN)/blib.a
$(BLIB) : $(BLIB_OBJS) $(BLIB_LIST) $(MAKEDEPS)
$(Q)$(RM) $(BLIB)
$(QM)$(ECHO) " [AR] $@"
$(Q)$(AR) r $@ $(BLIB_OBJS)
$(Q)$(RANLIB) $@
blib : $(BLIB)
# Build an intermediate object file from the objects required for the
# specified target.
#
$(BIN)/%.tmp : $(BLIB) $(MAKEDEPS) $(LDSCRIPT)
$(QM)$(ECHO) " [LD] $@"
$(Q)$(LD) $(LDFLAGS) -T $(LDSCRIPT) $(TGT_LD_FLAGS) $(BLIB) -o $@ \
-Map $(BIN)/$*.tmp.map
$(Q)$(OBJDUMP) -ht $@ | $(SORTOBJDUMP) >> $(BIN)/$*.tmp.map
# Show a linker map for the specified target
#
$(BIN)/%.map : $(BIN)/%.tmp
@less $(BIN)/$*.tmp.map
# Extract compression information from intermediate object file
#
$(BIN)/%.zinfo : $(BIN)/%.tmp
$(QM)$(ECHO) " [ZINFO] $@"
$(Q)$(OBJCOPY) -O binary -j .zinfo $< $@
# Build raw binary file from intermediate object file
#
$(BIN)/%.bin : $(BIN)/%.tmp
$(QM)$(ECHO) " [BIN] $@"
$(Q)$(OBJCOPY) -O binary -R .zinfo $< $@
# Compress raw binary file
#
$(BIN)/%.zbin : $(BIN)/%.bin $(BIN)/%.zinfo $(ZBIN)
$(QM)$(ECHO) " [ZBIN] $@"
$(Q)$(ZBIN) $(BIN)/$*.bin $(BIN)/$*.zinfo > $@
# Build bochs symbol table
$(BIN)/%.bxs : $(BIN)/%.tmp
$(NM) $< | cut -d" " -f1,3 > $@
# Rules for each media format. These are generated and placed in an
# external Makefile fragment. We could do this via $(eval ...), but
# that would require make >= 3.80.
#
# Note that there's an alternative way to generate most .rom images:
# they can be copied from their 'master' ROM image using cp and
# reprocessed with makerom to add the PCI IDs and ident string. The
# relevant rule would look something like:
#
# $(BIN)/dfe538%rom : $(BIN)/rtl8139%rom
# cat $< $@
# $(FINALISE_rom)
#
# You can derive the ROM/driver relationships using the variables
# DRIVER_<rom> and/or ROMS_<driver>.
#
# We don't currently do this, because (a) it would require generating
# yet more Makefile fragments (since you need a rule for each ROM in
# ROMS), and (b) the linker is so fast that it probably wouldn't make
# much difference to the overall build time.
media :
@$(ECHO) $(MEDIA)
AUTO_MEDIA = $(filter-out $(NON_AUTO_MEDIA),$(MEDIA))
automedia :
@$(ECHO) $(AUTO_MEDIA)
# media_template : create Makefile rules for specified media
#
# $(1) is the media name (e.g. "rom")
# $(2) is the full path to the .d file (e.g. "bin/deps/rom.media.d")
#
define media_template
@$(ECHO) "Generating Makefile rules for $(1) media"
@$(MKDIR) -p $(dir $(2))
@$(RM) $(2)
@$(TOUCH) $(2)
@$(ECHO_E) '$$(BIN)/%.$(1) : $$(BIN)/%.$(1).zbin' \
'\n\t$$(QM)$(ECHO) " [FINISH] $$@"' \
'\n\t$$(Q)$$(CP) $$< $$@' \
'\n\t$$(Q)$$(FINALISE_$(1))' \
> $(2)
endef
# Rule to generate the Makefile rules to be included
#
$(BIN)/deps/%.media.d : $(MAKEDEPS)
$(if $(filter $(AUTO_MEDIA),$*), \
$(call media_template,$*,$@), \
@$(ECHO) 'ERROR: $* is not an AUTO_MEDIA' ; exit 1)
# Calculate and include the list of Makefile rules files
#
MEDIA_DEPS = $(patsubst %,$(BIN)/deps/%.media.d,$(AUTO_MEDIA))
mediadeps :
@$(ECHO) $(MEDIA_DEPS)
include $(MEDIA_DEPS)
# The "allXXXs" targets for each suffix
#
allall: allroms allzroms allpxes allisos alldsks
allroms allzroms : all%s : $(foreach ROM,$(ROMS),$(BIN)/$(ROM).%)
allpxes allisos alldsks : all%s : $(foreach DRIVER,$(DRIVERS),$(BIN)/$(DRIVER).%)
# Alias for gpxe.%
#
$(BIN)/etherboot.% : $(BIN)/gpxe.%
ln -sf $(notdir $<) $@
# Wrap up binary blobs
#
$(BIN)/%.o : payload/%.img
$(QM)echo " [WRAP] $@"
$(Q)$(LD) -b binary -r -o $@ $< --undefined obj_payload \
--defsym obj_$*=0
BOBJS += $(patsubst payload/%.img,$(BIN)/%.o,$(wildcard payload/*.img))
# The compression utilities
#
$(NRV2B) : util/nrv2b.c $(MAKEDEPS)
$(QM)$(ECHO) " [HOSTCC] $@"
$(Q)$(HOST_CC) -O2 -DENCODE -DDECODE -DMAIN -DVERBOSE -DNDEBUG \
-DBITSIZE=32 -DENDIAN=0 -o $@ $<
CLEANUP += $(NRV2B)
$(ZBIN) : util/zbin.c util/nrv2b.c $(MAKEDEPS)
$(QM)$(ECHO) " [HOSTCC] $@"
$(Q)$(HOST_CC) -O2 -o $@ $<
CLEANUP += $(ZBIN)
# Auto-incrementing build serial number. Append "bs" to your list of
# build targets to get a serial number printed at the end of the
# build. Enable -DBUILD_SERIAL in order to see it when the code runs.
#
BUILDSERIAL_H = config/.buildserial.h
BUILDSERIAL_NOW = config/.buildserial.now
BUILDSERIAL_NEXT = config/.buildserial.next
$(BUILDSERIAL_NOW) $(BUILDSERIAL_NEXT) :
$(ECHO) 1 > $@
$(BUILDSERIAL_H) : $(BUILDSERIAL_NOW) $(BUILDSERIAL_NEXT)
$(ECHO) '#define BUILD_SERIAL_NUM $(shell cat $<)' > $@
ifeq ($(filter bs,$(MAKECMDGOALS)),bs)
$(shell diff -q $(BUILDSERIAL_NOW) $(BUILDSERIAL_NEXT) > /dev/null || \
cp -f $(BUILDSERIAL_NEXT) $(BUILDSERIAL_NOW))
endif
bs : $(BUILDSERIAL_NOW)
@$(ECHO) $$(( $(shell cat $<) + 1 )) > $(BUILDSERIAL_NEXT)
@$(ECHO) "Build serial number is $(shell cat $<)"
# List of available architectures
#
ARCHS = $(filter-out CVS,$(patsubst arch/%,%,$(wildcard arch/*)))
archs :
@$(ECHO) $(ARCHS)
OTHER_ARCHS = $(filter-out $(ARCH),$(ARCHS))
otherarchs :
@$(ECHO) $(OTHER_ARCHS)
# Build the TAGS file for emacs
#
TAGS : TAGS.$(ARCH)
TAGS.$(ARCH) :
ctags -e -R -f $@ --exclude=bin \
$(foreach ARCH,$(OTHER_ARCHS),--exclude=arch/$(ARCH))
CLEANUP += TAGS*
# Symbol table checks
#
SYMTAB = $(BIN)/symtab
$(SYMTAB) : $(BLIB)
$(OBJDUMP) -w -t $< > $@
CLEANUP += $(BIN)/symtab
symcheck : $(SYMTAB)
$(SYMCHECK) $<
# Force rebuild for any given target
#
$(BIN)/%.rebuild :
rm -f $(BIN)/$*
$(MAKE) $(MAKEFLAGS) $(BIN)/$*
# Documentation
#
$(BIN)/doxygen.cfg : doxygen.cfg $(MAKEDEPS)
$(PERL) -pe 's{\@SRCDIRS\@}{$(SRCDIRS)}; ' \
-e 's{\@BIN\@}{$(BIN)}; ' \
-e 's{\@ARCH\@}{$(ARCH)}; ' \
$< > $@
$(BIN)/doc : $(BIN)/doxygen.cfg
$(DOXYGEN) $<
.PHONY : $(BIN)/doc
VERYCLEANUP += $(BIN)/doc
doc : $(BIN)/doc
docview :
@[ -f $(BIN)/doc/html/index.html ] || $(MAKE) $(BIN)/doc
@if [ -n "$$BROWSER" ] ; then \
( $$BROWSER $(BIN)/doc/html/index.html & ) ; \
else \
$(ECHO) "Documentation index in $(BIN)/doc/html/index.html" ; \
fi
# Clean-up
#
clean :
$(RM) $(CLEANUP)
veryclean : clean
$(RM) -r $(VERYCLEANUP)
# Make clean tarballs for release
gpxe-tarball : ../VERSION
($(ECHO) -n $(VERSION) ''; date -u +'%Y-%m-%d') > ../VERSION
$(RM) -r /tmp/gpxe/gpxe-$(VERSION)
mkdir -p /tmp/gpxe/gpxe-$(VERSION)
cp -rP .. /tmp/gpxe/gpxe-$(VERSION)
$(RM) -r /tmp/gpxe/CVS
( cd /tmp/gpxe/gpxe-$(VERSION)/src ; $(RM) -r bin/deps ; $(MAKE) clean ; $(MAKE) veryclean )
( cd /tmp/gpxe; tar cf /tmp/gpxe/gpxe-$(VERSION).tar --exclude CVS --exclude "#*" \
--exclude "*~" gpxe-$(VERSION) )
bzip2 -9 < /tmp/gpxe/gpxe-$(VERSION).tar > /tmp/gpxe/gpxe-$(VERSION).tar.bz2
gzip -9 < /tmp/gpxe/gpxe-$(VERSION).tar > /tmp/gpxe/gpxe-$(VERSION).tar.gz
$(RM) -r /tmp/gpxe/gpxe-$(VERSION)
$(RM) /tmp/gpxe/gpxe-$(VERSION).tar
( cd /tmp/gpxe ; tar -zxf /tmp/gpxe/gpxe-$(VERSION).tar.gz )
