# -*- 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 = 5
VERSION_MINOR = 3
VERSION_PATCH = 14
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
# 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
# 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)) \
-M $(1) -MT "$(4)_DEPS" | tr : = >> $(2)
@echo -e '\n$$(BIN)/$(4).o : $(1) $$(MAKEDEPS) $$($(4)_DEPS)' \
'\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) $$($(4)_DEPS)' \
'\n\t$$(RULE_$(3)_to_$(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
# Library of all objects
#
$(BLIB) : $(BOBJS)
$(AR) r $@ $(BOBJS)
$(RANLIB) $@
blib : $(BLIB)
# 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")
#
TGT_ELEMENTS = $(subst --, ,$(firstword $(subst ., ,$(notdir $@))))
TGT_PREFIX = $(word 2,$(subst ., ,$(notdir $@)))
TGT_DRIVERS = $(strip $(foreach TGT_ELEMENT,$(TGT_ELEMENTS), \
$(firstword $(DRIVER_$(TGT_ELEMENT)) $(TGT_ELEMENT))))
TGT_ROM_NAME = $(firstword $(TGT_ELEMENTS))
TGT_MEDIA = $(subst z,,$(TGT_PREFIX))
# Look up ROM type and IDs for the current target
# (e.g. "bin/dfe538--prism2_pci.zrom.tmp") and derive the variables:
#
# TGT_ROM_TYPE : PCI/ISA indicator (e.g. "pci")
# TGT_PCI_VENDOR : the PCI vendor ID (e.g. "0x1186")
# TGT_PCI_DEVICE : the PCI device ID (e.g. "0x1300")
#
TGT_ROM_TYPE = $(ROM_TYPE_$(TGT_ROM_NAME))
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_PREFIX : symbols to require in order to drag in the relevant prefix
# (e.g. "obj_zpciprefix")
# 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_%,$(TGT_DRIVERS)))
TGT_LD_PREFIX = obj_$(subst rom,$(TGT_ROM_TYPE),$(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))))
# 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 'ROM type : $(TGT_ROM_TYPE)'
@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)'
# Build an intermediate object file from the objects required for the
# specified target.
#
$(BIN)/%.tmp : $(BLIB) $(MAKEDEPS) $(LDSCRIPT)
$(LD) $(LDFLAGS) -T $(LDSCRIPT) $(TGT_LD_FLAGS) $< -o $@ \
-Map $(BIN)/$*.tmp.map
# Show a linker map for the specified target
#
$(BIN)/%.map : $(BIN)/%.tmp
@less $(BIN)/$*.tmp.map
# 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).tmp' \
'\n\t$$(OBJCOPY) -O binary $$< $$@' \
'\n\t$$(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
#
allroms allzroms : all%s : $(foreach ROM,$(ROMS),$(BIN)/$(ROM).%)
all%s : $(foreach DRIVER,$(DRIVERS),$(BIN)/$(DRIVER).%)
# The compressor utility
#
$(NRV2B) : util/nrv2b.c $(MAKEDEPS)
$(HOST_CC) -O2 -DENCODE -DDECODE -DMAIN -DVERBOSE -DNDEBUG \
-DBITSIZE=32 -DENDIAN=0 -o $@ $<
CLEANUP += $(NRV2B)
# 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 = include/.buildserial.h
$(BUILDSERIAL_H) :
@if [ ! -s $@ ]; then echo '#define BUILD_SERIAL_NUM 0' > $@; fi
@perl -pi -e 's/(BUILD_SERIAL_NUM)\s+(\d+)/"$${1} ".($${2}+1)/e' $@
bs : $(BUILDSERIAL_H)
@perl -n -e '/BUILD_SERIAL_NUM\s+(\d+)/ && ' \
-e 'print "Build serial number is $$1\n";' $<
ifeq ($(filter bs,$(MAKECMDGOALS)),bs)
.PHONY : $(BUILDSERIAL_H)
endif
# Ensure that include/.buildserial.h always exists, to solve the
# problem of bootstrapping a BUILD_SERIAL-enabled build.
#
ifeq ($(wildcard $(BUILDSERIAL_H)),)
$(shell $(TOUCH) $(BUILDSERIAL_H))
endif
# 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 $@ $(foreach ARCH,$(OTHER_ARCHS),--exclude=arch/$(ARCH))
CLEANUP += TAGS*
# Force rebuild for any given target
#
$(BIN)/%.rebuild :
rm -f $(BIN)/$*
$(MAKE) $(MAKEFLAGS) $(BIN)/$*
# Build a debugging version of an object
#
$(BIN)/%.o.dbg :
rm -f $(BIN)/$*.o
$(MAKE) $(MAKEFLAGS) EXTRA_CFLAGS+=-Ddebug_$* $(BIN)/$*.o
# Clean-up
#
clean :
$(RM) $(CLEANUP)
veryclean : clean
$(RM) -r $(VERYCLEANUP)
