scripts/config/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2 # ===========================================================================
   3 # OpenWrt configuration targets
   4
   5 .PHONY: clean all
   6 all: conf mconf
   7 clean:
   8         rm -f *.o lxdialog/*.o *.moc $(clean-files) conf mconf qconf
   9
  10 clean-files     :=
  11
  12 # ===========================================================================
  13 # Variables needed by the upstream Makefile
  14
  15 # Avoids displaying 'UPD mconf-cfg' in an otherwise quiet make menuconfig
  16 kecho:=true
  17
  18 CONFIG_SHELL:=$(SHELL)
  19 srctree:=.
  20 src:=.
  21 obj:=.
  22 Q:=$(if $V,,@)
  23 cmd = $(cmd_$(1))
  24 dot-target = $(dir $@).$(notdir $@)
  25
  26 # taken from ../Kbuild.include
  27 define filechk
  28         $(Q)set -e;                                             \
  29         mkdir -p $(dir $@);                                     \
  30         trap "rm -f $(dot-target).tmp" EXIT;                    \
  31         { $(filechk_$(1)); } > $(dot-target).tmp;               \
  32         if [ ! -r $@ ] || ! cmp -s $@ $(dot-target).tmp; then   \
  33                 $(kecho) '  UPD     $@';                        \
  34                 mv -f $(dot-target).tmp $@;                     \
  35         fi
  36 endef
  37
  38 ### Stripped down upstream Makefile follows:
  39 # ===========================================================================
  40 # object files used by all kconfig flavours
  41 common-objs     := confdata.o expr.o lexer.lex.o parser.tab.o preprocess.o \
  42                    symbol.o util.o
  43
  44 $(obj)/lexer.lex.o: $(obj)/parser.tab.h
  45 HOSTCFLAGS_lexer.lex.o  := -I $(srctree)/$(src)
  46 HOSTCFLAGS_parser.tab.o := -I $(srctree)/$(src)
  47
  48 # conf: Used for defconfig, oldconfig and related targets
  49 hostprogs-y     += conf
  50 conf-objs       := conf.o $(common-objs)
  51
  52 # mconf: Used for the menuconfig target based on lxdialog
  53 hostprogs-y     += mconf
  54 lxdialog        := $(addprefix lxdialog/, \
  55                      checklist.o inputbox.o menubox.o textbox.o util.o yesno.o)
  56 mconf-objs      := mconf.o $(lxdialog) $(common-objs)
  57
  58 HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs)
  59 $(foreach f, mconf.o $(lxdialog), \
  60   $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags)))
  61
  62 $(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg
  63
  64 # qconf: Used for the xconfig target based on Qt
  65 hostprogs-y     += qconf
  66 qconf-cxxobjs   := qconf.o
  67 qconf-objs      := images.o $(common-objs)
  68
  69 HOSTLDLIBS_qconf        = $(shell . $(obj)/qconf-cfg && echo $$libs)
  70 HOSTCXXFLAGS_qconf.o    = $(shell . $(obj)/qconf-cfg && echo $$cflags)
  71
  72 $(obj)/qconf.o: $(obj)/qconf-cfg $(obj)/qconf.moc
  73
  74 quiet_cmd_moc = MOC     $@
  75       cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) -i $< -o $@
  76
  77 $(obj)/%.moc: $(src)/%.h $(obj)/qconf-cfg
  78         $(call cmd,moc)
  79
  80 # check if necessary packages are available, and configure build flags
  81 filechk_conf_cfg = $(CONFIG_SHELL) $<
  82
  83 $(obj)/%conf-cfg: $(src)/%conf-cfg.sh FORCE
  84         $(call filechk,conf_cfg)
  85
  86 clean-files += *conf-cfg
  87
  88 # ===========================================================================
  89 # OpenWrt rules and final adjustments that need to be made after reading the
  90 # full upstream Makefile
  91
  92 FORCE:
  93
  94 ifdef BUILD_SHIPPED_FILES
  95 shipped-files := lexer.lex.c parser.tab.c parser.tab.h
  96 clean-files += $(shipped-files)
  97
  98 .SECONDARY: $(shipped-files)
  99
 100 %.tab.c %.tab.h: %.y
 101         bison -l -d -b $* $<
 102
 103 %.lex.c: %.l
 104         flex -L -o$@ $<
 105 endif
 106
 107 $(foreach f, mconf.o $(lxdialog), \
 108   $(eval $f: CFLAGS+=$$(HOSTCFLAGS_$f)))
 109
 110 $(obj)/lexer.lex.o: CFLAGS += $(HOSTCFLAGS_lexer.lex.o)
 111 $(obj)/parser.tab.o: CFLAGS += $(HOSTCFLAGS_parser.tab.o)
 112 $(obj)/qconf.o: CXXFLAGS+=$(HOSTCXXFLAGS_qconf.o)
 113
 114 conf: $(conf-objs)
 115
 116 # The *conf-cfg file is used (then filtered out) as the first prerequisite to
 117 # avoid sourcing it before the script is built, when trying to compute CFLAGS
 118 # for the actual first prerequisite.  This avoids errors like:
 119 # '/bin/sh: ./mconf-cfg: No such file or directory'
 120 mconf: mconf-cfg $(mconf-objs)
 121         $(CC) -o $@ $(filter-out mconf-cfg,$^) $(HOSTLDLIBS_mconf)
 122
 123 qconf: qconf-cfg $(qconf-cxxobjs) $(qconf-objs)
 124         $(CXX) -o $@ $(filter-out qconf-cfg,$^) $(HOSTLDLIBS_qconf)