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 $(clean-files) conf mconf qconf
   9
  10 # This clean-files definition is here to ensure that temporary files from the
  11 # previous version are removed by make config-clean.
  12 # It should be removed or emptied when this Makefile get updated again.
  13 clean-files     := zconf.tab.c zconf.lex.c zconf.hash.c .tmp_qtcheck
  14
  15 # ===========================================================================
  16 # Variables needed by the upstream Makefile
  17
  18 # Avoids displaying 'UPD mconf-cfg' in an otherwise quiet make menuconfig
  19 kecho:=true
  20
  21 CONFIG_SHELL:=$(SHELL)
  22 srctree:=.
  23 src:=.
  24 obj:=.
  25 Q:=$(if $V,,@)
  26 cmd = $(cmd_$(1))
  27 dot-target = $(dir $@).$(notdir $@)
  28
  29 # taken from ../Kbuild.include
  30 define filechk
  31         $(Q)set -e;                                             \
  32         mkdir -p $(dir $@);                                     \
  33         trap "rm -f $(dot-target).tmp" EXIT;                    \
  34         { $(filechk_$(1)); } > $(dot-target).tmp;               \
  35         if [ ! -r $@ ] || ! cmp -s $@ $(dot-target).tmp; then   \
  36                 $(kecho) '  UPD     $@';                        \
  37                 mv -f $(dot-target).tmp $@;                     \
  38         fi
  39 endef
  40
  41 ### Stripped down upstream Makefile follows:
  42 # ===========================================================================
  43 # object files used by all kconfig flavours
  44 common-objs     := confdata.o expr.o lexer.lex.o parser.tab.o preprocess.o \
  45                    symbol.o util.o
  46
  47 $(obj)/lexer.lex.o: $(obj)/parser.tab.h
  48 HOSTCFLAGS_lexer.lex.o  := -I $(srctree)/$(src)
  49 HOSTCFLAGS_parser.tab.o := -I $(srctree)/$(src)
  50
  51 # conf: Used for defconfig, oldconfig and related targets
  52 hostprogs-y     += conf
  53 conf-objs       := conf.o $(common-objs)
  54
  55 # mconf: Used for the menuconfig target based on lxdialog
  56 hostprogs-y     += mconf
  57 lxdialog        := $(addprefix lxdialog/, \
  58                      checklist.o inputbox.o menubox.o textbox.o util.o yesno.o)
  59 mconf-objs      := mconf.o $(lxdialog) $(common-objs)
  60
  61 HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs)
  62 $(foreach f, mconf.o $(lxdialog), \
  63   $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags)))
  64
  65 $(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg
  66
  67 # qconf: Used for the xconfig target based on Qt
  68 hostprogs-y     += qconf
  69 qconf-cxxobjs   := qconf.o
  70 qconf-objs      := images.o $(common-objs)
  71
  72 HOSTLDLIBS_qconf        = $(shell . $(obj)/qconf-cfg && echo $$libs)
  73 HOSTCXXFLAGS_qconf.o    = $(shell . $(obj)/qconf-cfg && echo $$cflags)
  74
  75 $(obj)/qconf.o: $(obj)/qconf-cfg $(obj)/qconf.moc
  76
  77 quiet_cmd_moc = MOC     $@
  78       cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) -i $< -o $@
  79
  80 $(obj)/%.moc: $(src)/%.h $(obj)/qconf-cfg
  81         $(call cmd,moc)
  82
  83 # check if necessary packages are available, and configure build flags
  84 filechk_conf_cfg = $(CONFIG_SHELL) $<
  85
  86 $(obj)/%conf-cfg: $(src)/%conf-cfg.sh FORCE
  87         $(call filechk,conf_cfg)
  88
  89 clean-files += *conf-cfg
  90
  91 # ===========================================================================
  92 # OpenWrt rules and final adjustments that need to be made after reading the
  93 # full upstream Makefile
  94
  95 FORCE:
  96
  97 ifdef BUILD_SHIPPED_FILES
  98 shipped-files := lexer.lex.c parser.tab.c parser.tab.h
  99 clean-files += $(shipped-files)
 100
 101 .SECONDARY: $(shipped-files)
 102
 103 %.tab.c %.tab.h: %.y
 104         bison -l -d -b $* $<
 105
 106 %.lex.c: %.l
 107         flex -L -o$@ $<
 108 endif
 109
 110 $(foreach f, mconf.o $(lxdialog), \
 111   $(eval $f: CFLAGS+=$$(HOSTCFLAGS_$f)))
 112
 113 $(obj)/lexer.lex.o: CFLAGS += $(HOSTCFLAGS_lexer.lex.o)
 114 $(obj)/parser.tab.o: CFLAGS += $(HOSTCFLAGS_parser.tab.o)
 115 $(obj)/qconf.o: CXXFLAGS+=$(HOSTCXXFLAGS_qconf.o)
 116
 117 conf: $(conf-objs)
 118
 119 # The *conf-cfg file is used (then filtered out) as the first prerequisite to
 120 # avoid sourcing it before the script is built, when trying to compute CFLAGS
 121 # for the actual first prerequisite.  This avoids errors like:
 122 # '/bin/sh: ./mconf-cfg: No such file or directory'
 123 mconf: mconf-cfg $(mconf-objs)
 124         $(CC) -o $@ $(filter-out mconf-cfg,$^) $(HOSTLDLIBS_mconf)
 125
 126 qconf: qconf-cfg $(qconf-cxxobjs) $(qconf-objs)
 127         $(CXX) -o $@ $(filter-out qconf-cfg,$^) $(HOSTLDLIBS_qconf)