376 lines
12 KiB
Makefile
376 lines
12 KiB
Makefile
# -*- makefile -*- : Force emacs to use Makefile mode
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# This file contains various boring housekeeping functions that would
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# otherwise seriously clutter up the main Makefile.
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# Objects to be removed by "make clean"
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#
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CLEANUP := $(BIN)/*.* # *.* to avoid catching the "CVS" directory
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# Version number calculations
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#
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VERSION_MAJOR = 5
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VERSION_MINOR = 3
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VERSION_PATCH = 14
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EXTRAVERSION =
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MM_VERSION = $(VERSION_MAJOR).$(VERSION_MINOR)
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VERSION = $(MM_VERSION).$(VERSION_PATCH)$(EXTRAVERSION)
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CFLAGS += -DVERSION_MAJOR=$(VERSION_MAJOR) \
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-DVERSION_MINOR=$(VERSION_MINOR) \
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-DVERSION=\"$(VERSION)\"
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IDENT = '$(@F) $(VERSION) (GPL) etherboot.org'
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version :
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@echo $(VERSION)
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# Check for tools that can cause failed builds
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#
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.toolcheck : Makefile Config
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@if $(CC) -v 2>&1 | grep -is 'gcc version 2\.96' > /dev/null; then \
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echo 'gcc 2.96 is unsuitable for compiling Etherboot'; \
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echo 'Use gcc 2.95 or gcc 3.x instead'; \
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exit 1; \
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fi
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@if [ `perl -e 'use bytes; print chr(255)' | wc -c` = 2 ]; then \
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echo 'Your Perl version has a Unicode handling bug'; \
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echo 'Execute this command before compiling Etherboot:'; \
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echo 'export LANG=$${LANG%.UTF-8}'; \
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exit 1; \
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fi
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@$(TOUCH) $@
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VERYCLEANUP += .toolcheck
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# Check for an old version of gas (binutils 2.9.1)
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#
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OLDGAS := $(shell $(AS) --version | grep -q '2\.9\.1' && echo -DGAS291)
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CFLAGS += $(OLDGAS)
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oldgas :
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@echo $(oldgas)
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# SRCDIRS lists all directories containing source files.
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srcdirs :
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@echo $(SRCDIRS)
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# SRCS lists all .c or .S files found in any SRCDIR
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#
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SRCS += $(wildcard $(patsubst %,%/*.c,$(SRCDIRS)))
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SRCS += $(wildcard $(patsubst %,%/*.S,$(SRCDIRS)))
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srcs :
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@echo $(SRCS)
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# AUTO_SRCS lists all files in SRCS that are not mentioned in
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# NON_AUTO_SRCS. Files should be added to NON_AUTO_SRCS if they
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# cannot be built using the standard build template.
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#
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AUTO_SRCS = $(filter-out $(NON_AUTO_SRCS),$(SRCS))
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autosrcs :
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@echo $(AUTO_SRCS)
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# We automatically generate rules for any file mentioned in AUTO_SRCS
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# using the following set of templates. It would be cleaner to use
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# $(eval ...), but this function exists only in GNU make >= 3.80.
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# src_template : generate Makefile rules for a given source file
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#
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# $(1) is the full path to the source file (e.g. "drivers/net/rtl8139.c")
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# $(2) is the full path to the .d file (e.g. "bin/deps/drivers/net/rtl8139.d")
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# $(3) is the source type (e.g. "c")
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# $(4) is the source base name (e.g. "rtl8139")
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#
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define src_template
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@echo "Generating Makefile rules for $(1)"
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@$(MKDIR) -p $(dir $(2))
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@$(RM) $(2)
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@$(TOUCH) $(2)
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$(foreach OBJ,$(if $(OBJS_$(4)),$(OBJS_$(4)),$(4)), \
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$(call obj_template,$(1),$(2),$(3),$(OBJ)))
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@$(PARSEROM) $(1) >> $(2)
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endef
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# obj_template : generate Makefile rules for a given resultant object
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# of a particular source file. (We can have multiple objects per
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# source file via the OBJS_xxx list.)
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#
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# $(1) is the full path to the source file (e.g. "drivers/net/rtl8139.c")
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# $(2) is the full path to the .d file (e.g. "bin/deps/drivers/net/rtl8139.d")
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# $(3) is the source type (e.g. "c")
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# $(4) is the object name (e.g. "rtl8139")
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#
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define obj_template
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@$(CPP) $(CFLAGS) $(CFLAGS_$(3)) $(CFLAGS_$(4)) \
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-M $(1) -MT "$(4)_DEPS" | tr : = >> $(2)
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@echo -e '\n$$(BIN)/$(4).o : $(1) $$(MAKEDEPS) $$($(4)_DEPS)' \
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'\n\t$$(RULE_$(3))\n' \
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'\nBOBJS += $$(BIN)/$(4).o\n' \
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$(foreach TGT,$(DEBUG_TARGETS), \
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$(if $(RULE_$(3)_to_$(TGT)), \
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'\n$$(BIN)/$(4).$(TGT) : $(1) $$(MAKEDEPS) $$($(4)_DEPS)' \
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'\n\t$$(RULE_$(3)_to_$(TGT))\n' ) ) \
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'\n$(2) : $$($(4)_DEPS)\n' \
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'\nTAGS : $$($(4)_DEPS)\n' \
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>> $(2)
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endef
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# Rule to generate the Makefile rules files to be included
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#
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$(BIN)/deps/%.d : % $(MAKEDEPS) $(PARSEROM)
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$(if $(filter $(AUTO_SRCS),$<),$(call src_template,$<,$@,$(subst .,,$(suffix $<)),$(basename $(notdir $<))),@echo 'ERROR: $< is not an AUTO_SRC' ; exit 1)
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# Calculate and include the list of Makefile rules files
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#
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AUTO_DEPS = $(patsubst %,$(BIN)/deps/%.d,$(AUTO_SRCS))
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include $(AUTO_DEPS)
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autodeps :
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@echo $(AUTO_DEPS)
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VERYCLEANUP += $(BIN)/deps
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# The following variables are created by the Makefile rules files
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#
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bobjs :
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@echo $(BOBJS)
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drivers :
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@echo $(DRIVERS)
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.PHONY : drivers
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roms :
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@echo $(ROMS)
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# Generate the NIC file from the parsed source files. The NIC file is
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# only for rom-o-matic.
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#
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$(BIN)/NIC : $(AUTO_DEPS)
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@echo '# This is an automatically generated file, do not edit' > $@
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@echo '# It does not affect anything in the build, ' \
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'it is only for rom-o-matic' >> $@
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@echo >> $@
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@perl -ne 'chomp; print "$$1\n" if /\# NIC\t(.*)$$/' $^ >> $@
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CLEANUP += $(BIN)/NIC
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# Library of all objects
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#
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$(BLIB) : $(BOBJS)
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$(AR) r $@ $(BOBJS)
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$(RANLIB) $@
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blib : $(BLIB)
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# Analyse a target name (e.g. "bin/dfe538--prism2_pci.zrom.tmp") and
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# derive the variables:
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#
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# TGT_ELEMENTS : the elements of the target (e.g. "dfe538 prism2_pci")
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# TGT_PREFIX : the prefix type (e.g. "zrom")
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# TGT_DRIVERS : the driver for each element (e.g. "rtl8139 prism2_pci")
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# TGT_ROM_NAME : the ROM name (e.g. "dfe538")
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# TGT_MEDIA : the media type (e.g. "rom")
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#
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TGT_ELEMENTS = $(subst --, ,$(firstword $(subst ., ,$(notdir $@))))
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TGT_PREFIX = $(word 2,$(subst ., ,$(notdir $@)))
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TGT_DRIVERS = $(strip $(foreach TGT_ELEMENT,$(TGT_ELEMENTS), \
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$(firstword $(DRIVER_$(TGT_ELEMENT)) $(TGT_ELEMENT))))
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TGT_ROM_NAME = $(firstword $(TGT_ELEMENTS))
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TGT_MEDIA = $(subst z,,$(TGT_PREFIX))
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# Look up ROM type and IDs for the current target
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# (e.g. "bin/dfe538--prism2_pci.zrom.tmp") and derive the variables:
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#
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# TGT_ROM_TYPE : PCI/ISA indicator (e.g. "pci")
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# TGT_PCI_VENDOR : the PCI vendor ID (e.g. "0x1186")
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# TGT_PCI_DEVICE : the PCI device ID (e.g. "0x1300")
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#
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TGT_ROM_TYPE = $(ROM_TYPE_$(TGT_ROM_NAME))
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TGT_PCI_VENDOR = $(PCI_VENDOR_$(TGT_ROM_NAME))
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TGT_PCI_DEVICE = $(PCI_DEVICE_$(TGT_ROM_NAME))
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# Calculate link-time options for the current target
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# (e.g. "bin/dfe538--prism2_pci.zrom.tmp") and derive the variables:
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#
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# TGT_LD_DRIVERS : symbols to require in order to drag in the relevant drivers
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# (e.g. "obj_rtl8139 obj_prism2_pci")
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# TGT_LD_PREFIX : symbols to require in order to drag in the relevant prefix
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# (e.g. "obj_zpciprefix")
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# TGT_LD_IDS : symbols to define in order to fill in ID structures in the
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# ROM header (e.g. "pci_vendor=0x1186 pci_device=0x1300")
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#
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TGT_LD_DRIVERS = $(subst -,_,$(patsubst %,obj_%,$(TGT_DRIVERS)))
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TGT_LD_PREFIX = obj_$(subst rom,$(TGT_ROM_TYPE),$(TGT_PREFIX))prefix
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TGT_LD_IDS = $(if $(TGT_PCI_VENDOR),pci_vendor=$(TGT_PCI_VENDOR)) \
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$(if $(TGT_PCI_DEVICE),pci_device=$(TGT_PCI_DEVICE))
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# Calculate linker flags based on link-time options for the current
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# target type (e.g. "bin/dfe538--prism2_pci.zrom.tmp") and derive the
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# variables:
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#
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# TGT_LD_FLAGS : target-specific flags to pass to linker (e.g.
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# "-u obj_zpciprefix -u obj_rtl8139 -u obj_prism2_pci
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# --defsym pci_vendor=0x1186 --defsym pci_device=0x1300")
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#
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TGT_LD_FLAGS = $(foreach SYM,$(TGT_LD_PREFIX) $(TGT_LD_DRIVERS) obj_config,\
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-u $(SYM) --defsym check_$(SYM)=$(SYM) ) \
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$(patsubst %,--defsym %,$(TGT_LD_IDS))
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# Calculate makerom flags for the specific target
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# (e.g. "bin/dfe538--prism2_pci.zrom.tmp") and derive the variables:
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#
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# TGT_MAKEROM_FLAGS : target-specific flags for makerom (e.g.
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# "-p 0x1186,0x1300")
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#
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TGT_MAKEROM_FLAGS = $(strip $(MAKEROM_FLAGS_$(TGT_ROM_NAME)) \
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$(if $(TGT_PCI_VENDOR),$(strip -p $(TGT_PCI_VENDOR),$(TGT_PCI_DEVICE))))
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# Print out all derived information for a given target.
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#
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$(BIN)/%.info :
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@echo 'Elements : $(TGT_ELEMENTS)'
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@echo 'Prefix : $(TGT_PREFIX)'
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@echo 'Drivers : $(TGT_DRIVERS)'
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@echo 'ROM name : $(TGT_ROM_NAME)'
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@echo 'Media : $(TGT_MEDIA)'
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@echo
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@echo 'ROM type : $(TGT_ROM_TYPE)'
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@echo 'PCI vendor : $(TGT_PCI_VENDOR)'
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@echo 'PCI device : $(TGT_PCI_DEVICE)'
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@echo
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@echo 'LD driver symbols : $(TGT_LD_DRIVERS)'
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@echo 'LD prefix symbols : $(TGT_LD_PREFIX)'
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@echo 'LD ID symbols : $(TGT_LD_IDS)'
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@echo
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@echo 'LD target flags : $(TGT_LD_FLAGS)'
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@echo
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@echo 'makerom target flags : $(TGT_MAKEROM_FLAGS)'
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# Build an intermediate object file from the objects required for the
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# specified target.
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#
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$(BIN)/%.tmp : $(BLIB) $(MAKEDEPS) $(LDSCRIPT)
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$(LD) $(LDFLAGS) -T $(LDSCRIPT) $(TGT_LD_FLAGS) $< -o $@ \
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-Map $(BIN)/$*.tmp.map
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# Show a linker map for the specified target
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#
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$(BIN)/%.map : $(BIN)/%.tmp
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@less $(BIN)/$*.tmp.map
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# Rules for each media format. These are generated and placed in an
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# external Makefile fragment. We could do this via $(eval ...), but
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# that would require make >= 3.80.
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#
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# Note that there's an alternative way to generate most .rom images:
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# they can be copied from their 'master' ROM image using cp and
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# reprocessed with makerom to add the PCI IDs and ident string. The
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# relevant rule would look something like:
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#
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# $(BIN)/dfe538%rom : $(BIN)/rtl8139%rom
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# cat $< $@
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# $(FINALISE_rom)
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#
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# You can derive the ROM/driver relationships using the variables
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# DRIVER_<rom> and/or ROMS_<driver>.
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#
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# We don't currently do this, because (a) it would require generating
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# yet more Makefile fragments (since you need a rule for each ROM in
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# ROMS), and (b) the linker is so fast that it probably wouldn't make
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# much difference to the overall build time.
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media :
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@echo $(MEDIA)
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AUTO_MEDIA = $(filter-out $(NON_AUTO_MEDIA),$(MEDIA))
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automedia :
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@echo $(AUTO_MEDIA)
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# media_template : create Makefile rules for specified media
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#
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# $(1) is the media name (e.g. "rom")
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# $(2) is the full path to the .d file (e.g. "bin/deps/rom.media.d")
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#
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define media_template
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@echo "Generating Makefile rules for $(1) media"
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@$(MKDIR) -p $(dir $(2))
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@$(RM) $(2)
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@$(TOUCH) $(2)
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@echo -e '$$(BIN)/%$(1) : $$(BIN)/%$(1).tmp' \
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'\n\t$$(OBJCOPY) -O binary $$< $$@' \
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'\n\t$$(FINALISE_$(1))' \
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> $(2)
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endef
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# Rule to generate the Makefile rules to be included
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#
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$(BIN)/deps/%.media.d : $(MAKEDEPS)
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$(if $(filter $(AUTO_MEDIA),$*), \
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$(call media_template,$*,$@), \
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@echo 'ERROR: $* is not an AUTO_MEDIA' ; exit 1)
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# Calculate and include the list of Makefile rules files
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#
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MEDIA_DEPS = $(patsubst %,$(BIN)/deps/%.media.d,$(AUTO_MEDIA))
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mediadeps :
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@echo $(MEDIA_DEPS)
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include $(MEDIA_DEPS)
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# The "allXXXs" targets for each suffix
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#
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allroms allzroms : all%s : $(foreach ROM,$(ROMS),$(BIN)/$(ROM).%)
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all%s : $(foreach DRIVER,$(DRIVERS),$(BIN)/$(DRIVER).%)
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# The compressor utility
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#
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$(NRV2B) : util/nrv2b.c $(MAKEDEPS)
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$(HOST_CC) -O2 -DENCODE -DDECODE -DMAIN -DVERBOSE -DNDEBUG \
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-DBITSIZE=32 -DENDIAN=0 -o $@ $<
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CLEANUP += $(NRV2B)
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# Auto-incrementing build serial number. Append "bs" to your list of
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# build targets to get a serial number printed at the end of the
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# build. Enable -DBUILD_SERIAL in order to see it when the code runs.
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#
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BUILDSERIAL_H = include/.buildserial.h
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$(BUILDSERIAL_H) :
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@if [ ! -s $@ ]; then echo '#define BUILD_SERIAL_NUM 0' > $@; fi
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@perl -pi -e 's/(BUILD_SERIAL_NUM)\s+(\d+)/"$${1} ".($${2}+1)/e' $@
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bs : $(BUILDSERIAL_H)
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@perl -n -e '/BUILD_SERIAL_NUM\s+(\d+)/ && ' \
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-e 'print "Build serial number is $$1\n";' $<
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ifeq ($(filter bs,$(MAKECMDGOALS)),bs)
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.PHONY : $(BUILDSERIAL_H)
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endif
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# Ensure that include/.buildserial.h always exists, to solve the
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# problem of bootstrapping a BUILD_SERIAL-enabled build.
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#
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ifeq ($(wildcard $(BUILDSERIAL_H)),)
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$(shell $(TOUCH) $(BUILDSERIAL_H))
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endif
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# List of available architectures
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#
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ARCHS = $(filter-out CVS,$(patsubst arch/%,%,$(wildcard arch/*)))
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archs :
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@echo $(ARCHS)
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OTHER_ARCHS = $(filter-out $(ARCH),$(ARCHS))
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otherarchs :
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@echo $(OTHER_ARCHS)
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# Build the TAGS file for emacs
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#
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TAGS : TAGS.$(ARCH)
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TAGS.$(ARCH) :
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ctags -e -R -f $@ $(foreach ARCH,$(OTHER_ARCHS),--exclude=arch/$(ARCH))
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CLEANUP += TAGS*
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# Clean-up
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#
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clean :
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$(RM) $(CLEANUP)
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veryclean : clean
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$(RM) -r $(VERYCLEANUP)
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