util/kconfig/Makefile.mk

   1 # SPDX-License-Identifier: GPL-2.0-or-later
   2
   3 # Early coreboot specific configuration
   4 KBUILD_KCONFIG ?= src/Kconfig
   5
   6 export LC_ALL=C
   7 export LANG=C
   8
   9 DEFCONFIG ?= defconfig
  10
  11 # Include original Makefile, with just enough edits to work for us
  12 $(objk)/Makefile.real: $(dir $(lastword $(MAKEFILE_LIST)))Makefile
  13         mkdir -p $(objk)
  14         sed \
  15                 -e "s,\$$(obj),\$$(objk),g" \
  16                 -e "s,\$$(src),\$$(srck),g" \
  17                 -e "s,^help:,help_kconfig help::," \
  18                 -e "s,^%.config:,__disable__&," \
  19                 -e "s,^savedefconfig:,__disable__&," \
  20                 -e "s,\$$(srctree)/arch/\$$(SRCARCH)/configs/\$$(KBUILD_DEFCONFIG),\$$(KBUILD_DEFCONFIG)," \
  21                 -e "s,--defconfig=arch/\$$(SRCARCH)/configs/\$$(KBUILD_DEFCONFIG),--defconfig=\$$(KBUILD_DEFCONFIG)," \
  22                 -e "/^unexport CONFIG_$$/d" \
  23                 $< > $@.tmp
  24         mv $@.tmp $@
  25
  26 kecho := echo
  27
  28 cmd = $(cmd_$(1))
  29 cmd_conf_cfg = $< $(addprefix $(obj)/$*conf-, cflags libs bin); touch $(obj)/$*conf-bin
  30
  31 ###
  32 # Read a file, replacing newlines with spaces
  33 #
  34 # Make 4.2 or later can read a file by using its builtin function.
  35 #
  36 # Imported from Linux upstream:
  37 # commit 6768fa4bcb6c1618248f135d04b9287ba2724ae0
  38 # Author: Masahiro Yamada <masahiroy@kernel.org>
  39 ifneq ($(filter-out 3.% 4.0 4.1, $(MAKE_VERSION)),)
  40 read-file = $(subst $(newline),$(space),$(file < $1))
  41 else
  42 read-file = $(shell cat $1 2>/dev/null)
  43 endif
  44
  45 -include $(objk)/Makefile.real
  46 unexport KCONFIG_DEFCONFIG_LIST
  47
  48 # Fill in Linux kconfig build rules to work
  49
  50 savedefconfig: $(objk)/conf
  51         cp $(DOTCONFIG) $(DEFCONFIG)
  52         chmod +w $(DEFCONFIG)
  53         $< --savedefconfig=$(DEFCONFIG) $(KBUILD_KCONFIG)
  54
  55 FORCE:
  56
  57 filechk=$< > $@
  58
  59 $(objk)/%.o: $(srck)/%.c
  60         $(HOSTCC) -I $(srck) -I $(objk) -c $(HOSTCFLAGS_$(notdir $@)) -o $@ $<
  61
  62 $(objk)/%.o: $(srck)/%.cc
  63         $(HOSTCXX) -I $(srck) -I $(objk) -c $(HOSTCXXFLAGS_$(notdir $@)) -o $@ $<
  64
  65 $(objk)/%.o: $(objk)/%.c
  66         $(HOSTCC) -I $(srck) -I $(objk) -c -o $@ $<
  67
  68 $(objk)/%.moc: $(srck)/%.h | $(objk)/qconf-cfg
  69         $(call cmd_moc)
  70
  71 define hostprogs_template
  72 # $1 entry in hostprogs
  73 $(objk)/$(1): $$(foreach _o,$$($(1)-objs) $$($(1)-cxxobjs),$(objk)/$$(_o)) | $(wildcard $(objk)/$(1)-cfg)
  74         $$(HOSTCXX) -o $$@ $$^ $$(HOSTLDLIBS_$(1))
  75 endef
  76
  77 $(foreach prog,$(hostprogs),$(eval $(call hostprogs_template,$(prog))))
  78
  79 # This might be a bit of a chicken & egg problem, using a kconfig flag when
  80 # building kconfig, but if you're messing with the parser you probably know
  81 # what you're doing: make CONFIG_UTIL_GENPARSER=y
  82 ifeq ($(CONFIG_UTIL_GENPARSER),y)
  83 $(objk)/%.tab.c $(objk)/%.tab.h: $(srck)/%.y
  84         bison -t -l --defines -b $(objk)/$* $<
  85
  86 $(objk)/%.lex.c: $(srck)/%.l
  87         flex -L -o$@ $<
  88
  89 else # !CONFIG_UTIL_GENPARSER
  90
  91 $(objk)/parser.tab.c: | $(objk)/parser.tab.h
  92
  93 $(objk)/%: $(srck)/%_shipped
  94         cp $< $@
  95
  96 endif
  97
  98 # Support mingw by shipping our own regex implementation
  99 _OS=$(shell uname -s |cut -c-7)
 100 regex-objs=
 101 ifeq ($(_OS),MINGW32)
 102         regex-objs=regex.o
 103 endif
 104 $(objk)/regex.o: $(srck)/regex.c
 105         $(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) -DHAVE_STRING_H -c -o $@ $<
 106
 107 conf-objs += $(regex-objs)
 108 mconf-objs += $(regex-objs)
 109
 110 # Provide tool to convert kconfig output into Ada format
 111 $(objk)/toada: $(objk)/toada.o
 112         $(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) -o $@ $^
 113 $(objk)/toada.o: $(srck)/toada.c
 114         $(HOSTCC) $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) -c -o $@ $<