615cdfcdb9
It avoids the dependency on bison/flex, minimally speeds up the build
and also works around weird race conditions in some versions of bison
that need more investigation.
The issue this avoids manifests as a build error when creating
parser.tab.c:
input in flex scanner failed
make: *** [util/kconfig/Makefile.inc:66: build/util/kconfig/parser.tab.c] Error 2
Since the error happens within bison the alternative would be to make
bison part of our crossgcc environment to ensure that no broken OS
build is used.
BUG=b:197515860
TEST=things build with bison not installed
Change-Id: Ib35dfb7beafc0a09dc333e962b1e3f33df46a854
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57409
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
98 lines
2.6 KiB
Makefile
98 lines
2.6 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0-or-later
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# Early coreboot specific configuration
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KBUILD_KCONFIG ?= src/Kconfig
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export LC_ALL=C
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export LANG=C
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DEFCONFIG ?= defconfig
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# Include original Makefile, with just enough edits to work for us
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$(objk)/Makefile.real: $(dir $(lastword $(MAKEFILE_LIST)))Makefile
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mkdir -p $(objk)
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sed \
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-e "s,\$$(obj),\$$(objk),g" \
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-e "s,\$$(src),\$$(srck),g" \
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-e "s,^help:,help_kconfig help::," \
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-e "s,^%.config:,__disable__&," \
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-e "s,^savedefconfig:,__disable__&," \
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-e "s,\$$(srctree)/arch/\$$(SRCARCH)/configs/\$$(KBUILD_DEFCONFIG),\$$(KBUILD_DEFCONFIG)," \
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-e "s,--defconfig=arch/\$$(SRCARCH)/configs/\$$(KBUILD_DEFCONFIG),--defconfig=\$$(KBUILD_DEFCONFIG)," \
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-e "/^unexport CONFIG_$$/d" \
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$< > $@.tmp
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mv $@.tmp $@
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kecho := echo
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-include $(objk)/Makefile.real
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unexport KCONFIG_DEFCONFIG_LIST
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# Fill in Linux kconfig build rules to work
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oldconfig: KCONFIG_STRICT=
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savedefconfig: $(objk)/conf
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cp $(DOTCONFIG) $(DEFCONFIG)
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$< --savedefconfig=$(DEFCONFIG) $(KBUILD_KCONFIG)
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FORCE:
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filechk=$< > $@
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$(objk)/%.o: $(srck)/%.c
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$(HOSTCC) -I $(srck) -I $(objk) -c $(HOSTCFLAGS_$(notdir $@)) -o $@ $<
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$(objk)/%.o: $(srck)/%.cc
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$(HOSTCXX) -I $(srck) -I $(objk) -c $(HOSTCXXFLAGS_$(notdir $@)) -o $@ $<
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$(objk)/%.o: $(objk)/%.c
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$(HOSTCC) -I $(srck) -I $(objk) -c -o $@ $<
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$(objk)/%.moc: $(srck)/%.h | $(objk)/qconf-cfg
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$(call cmd_moc)
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define hostprogs_template
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# $1 entry in hostprogs
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$(objk)/$(1): $$(foreach _o,$$($(1)-objs) $$($(1)-cxxobjs),$(objk)/$$(_o)) | $(wildcard $(objk)/$(1)-cfg)
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$$(HOSTCXX) -o $$@ $$^ $$(HOSTLDLIBS_$(1))
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endef
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$(foreach prog,$(hostprogs),$(eval $(call hostprogs_template,$(prog))))
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# This might be a bit of a chicken & egg problem, using a kconfig flag when
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# building kconfig, but if you're messing with the parser you probably know
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# what you're doing: make CONFIG_UTIL_GENPARSER=y
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ifeq ($(CONFIG_UTIL_GENPARSER),y)
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$(objk)/%.tab.c $(objk)/%.tab.h: $(srck)/%.y
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bison -t -l --defines -b $(objk)/$* $<
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$(objk)/%.lex.c: $(srck)/%.l
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flex -L -o$@ $<
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else # !CONFIG_UTIL_GENPARSER
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$(objk)/parser.tab.c: | $(objk)/parser.tab.h
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$(objk)/%: $(srck)/%_shipped
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cp $< $@
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endif
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# Support mingw by shipping our own regex implementation
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_OS=$(shell uname -s |cut -c-7)
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regex-objs=
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ifeq ($(_OS),MINGW32)
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regex-objs=regex.o
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endif
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$(objk)/regex.o: $(srck)/regex.c
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$(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) -DHAVE_STRING_H -c -o $@ $<
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conf-objs += $(regex-objs)
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mconf-objs += $(regex-objs)
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# Provide tool to convert kconfig output into Ada format
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$(objk)/toada: $(objk)/toada.o
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$(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) -o $@ $^
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$(objk)/toada.o: $(srck)/toada.c
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$(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) -c -o $@ $<
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