scripts/config/Makefile

   1 # SPDX-License-Identifier: GPL-2.0-only
   2 # ===========================================================================
   3 # OpenWrt configuration targets
   4
   5 .PHONY: clean all
   6 all: conf mconf
   7 clean:
   8         rm -f *.o lxdialog/*.o *.moc .*.cmd $(clean-files)
   9
  10 # This clean-files definition is here to ensure that temporary files from the
  11 # previous version are removed by make config-clean.
  12 # It should be emptied after the end of support for OpenWrt 19.07.
  13 clean-files     := zconf.tab.c zconf.lex.c zconf.hash.c .tmp_qtcheck
  14
  15 # ===========================================================================
  16 # Variables needed by the upstream Makefile
  17
  18 # Avoids displaying 'UPD mconf-cfg' in an otherwise quiet make menuconfig
  19 kecho:=true
  20
  21 CONFIG_SHELL:=$(SHELL)
  22 srctree:=.
  23 src:=.
  24 obj:=.
  25 Q:=$(if $V,,@)
  26 cmd = $(cmd_$(1))
  27
  28 # some definitions taken from ../Kbuild.include
  29 dot-target = $(dir $@).$(notdir $@)
  30 squote  := '
  31 escsq = $(subst $(squote),'\$(squote)',$1)
  32 define filechk
  33         $(Q)set -e;                                             \
  34         mkdir -p $(dir $@);                                     \
  35         trap "rm -f $(dot-target).tmp" EXIT;                    \
  36         { $(filechk_$(1)); } > $(dot-target).tmp;               \
  37         if [ ! -r $@ ] || ! cmp -s $@ $(dot-target).tmp; then   \
  38                 $(kecho) '  UPD     $@';                        \
  39                 mv -f $(dot-target).tmp $@;                     \
  40         fi
  41 endef
  42 cmd-check = $(if $(strip $(cmd_$@)),,1)
  43 make-cmd = $(call escsq,$(subst $(pound),$$(pound),$(subst $$,$$$$,$(cmd_$(1)))))
  44 newer-prereqs = $(filter-out $(PHONY),$?)
  45 if_changed = $(if $(newer-prereqs)$(cmd-check),                 \
  46         $(cmd);                                                 \
  47         printf '%s\n' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:)
  48
  49 ### Stripped down upstream Makefile follows:
  50 # ===========================================================================
  51 # object files used by all kconfig flavours
  52 common-objs     := confdata.o expr.o lexer.lex.o menu.o parser.tab.o \
  53                    preprocess.o symbol.o util.o
  54
  55 $(obj)/lexer.lex.o: $(obj)/parser.tab.h
  56 HOSTCFLAGS_lexer.lex.o  := -I $(srctree)/$(src)
  57 HOSTCFLAGS_parser.tab.o := -I $(srctree)/$(src)
  58
  59 # conf: Used for defconfig, oldconfig and related targets
  60 hostprogs       += conf
  61 conf-objs       := conf.o $(common-objs)
  62
  63 # nconf: Used for the nconfig target based on ncurses
  64 hostprogs       += nconf
  65 nconf-objs      := nconf.o nconf.gui.o $(common-objs)
  66
  67 HOSTLDLIBS_nconf        = $(shell . $(obj)/nconf-cfg && echo $$libs)
  68 HOSTCFLAGS_nconf.o      = $(shell . $(obj)/nconf-cfg && echo $$cflags)
  69 HOSTCFLAGS_nconf.gui.o  = $(shell . $(obj)/nconf-cfg && echo $$cflags)
  70
  71 $(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg
  72
  73 # mconf: Used for the menuconfig target based on lxdialog
  74 hostprogs       += mconf
  75 lxdialog        := $(addprefix lxdialog/, \
  76                      checklist.o inputbox.o menubox.o textbox.o util.o yesno.o)
  77 mconf-objs      := mconf.o $(lxdialog) $(common-objs)
  78
  79 HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs)
  80 $(foreach f, mconf.o $(lxdialog), \
  81   $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags)))
  82
  83 $(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg
  84
  85 # qconf: Used for the xconfig target based on Qt
  86 hostprogs       += qconf
  87 qconf-cxxobjs   := qconf.o qconf-moc.o
  88 qconf-objs      := images.o $(common-objs)
  89
  90 HOSTLDLIBS_qconf        = $(shell . $(obj)/qconf-cfg && echo $$libs)
  91 HOSTCXXFLAGS_qconf.o    = $(shell . $(obj)/qconf-cfg && echo $$cflags)
  92 HOSTCXXFLAGS_qconf-moc.o = $(shell . $(obj)/qconf-cfg && echo $$cflags)
  93
  94 $(obj)/qconf.o: $(obj)/qconf-cfg
  95
  96 quiet_cmd_moc = MOC     $@
  97       cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) $< -o $@
  98
  99 $(obj)/qconf-moc.cc: $(src)/qconf.h $(obj)/qconf-cfg FORCE
 100         $(call if_changed,moc)
 101
 102 targets += qconf-moc.cc
 103
 104 # check if necessary packages are available, and configure build flags
 105 filechk_conf_cfg = $(CONFIG_SHELL) $<
 106
 107 $(obj)/%conf-cfg: $(src)/%conf-cfg.sh FORCE
 108         $(call filechk,conf_cfg)
 109
 110 clean-files += *conf-cfg
 111
 112 # ===========================================================================
 113 # OpenWrt rules and final adjustments that need to be made after reading the
 114 # full upstream Makefile
 115
 116 clean-files += $(targets) $(hostprogs)
 117
 118 FORCE:
 119
 120 ifdef BUILD_SHIPPED_FILES
 121 shipped-files := lexer.lex.c parser.tab.c parser.tab.h
 122 clean-files += $(shipped-files)
 123
 124 .SECONDARY: $(shipped-files)
 125
 126 %.tab.c %.tab.h: %.y
 127         bison -l -d -b $* $<
 128
 129 %.lex.c: %.l
 130         flex -L -o$@ $<
 131 endif
 132
 133 $(foreach f,$(conf-objs) $(filter-out $(common-objs),$(mconf-objs) \
 134                                                      $(qconf-objs) \
 135                                                      $(nconf-objs)), \
 136   $(eval $(obj)/$f: CFLAGS+=$$(HOSTCFLAGS_$f)))
 137
 138 $(foreach f,$(qconf-cxxobjs), \
 139   $(eval $(obj)/$f: CXXFLAGS+=$$(HOSTCXXFLAGS_$f)))
 140
 141 $(obj)/conf: $(addprefix $(obj)/,$(conf-objs))
 142
 143 # The *conf-cfg file is used (then filtered out) as the first prerequisite to
 144 # avoid sourcing it before the script is built, when trying to compute CFLAGS
 145 # for the actual first prerequisite.  This avoids errors like:
 146 # '/bin/sh: ./mconf-cfg: No such file or directory'
 147 $(obj)/mconf: mconf-cfg $(addprefix $(obj)/,$(mconf-objs))
 148         $(CC) -o $@ $(filter-out mconf-cfg,$^) $(HOSTLDLIBS_mconf)
 149
 150 $(obj)/nconf: nconf-cfg $(addprefix $(obj)/,$(nconf-objs))
 151         $(CC) -o $@ $(filter-out nconf-cfg,$^) $(HOSTLDLIBS_nconf)
 152
 153 $(obj)/qconf: qconf-cfg $(addprefix $(obj)/,$(qconf-cxxobjs) $(qconf-objs))
 154         $(CXX) -o $@ $(filter-out qconf-cfg,$^) $(HOSTLDLIBS_qconf)