Initial commit

scripts/config/Makefile

@@ -0,0 +1,140 @@
+# SPDX-License-Identifier: GPL-2.0-only
+# ===========================================================================
+# OpenWrt configuration targets
+
+.PHONY: clean all
+all: conf mconf
+clean:
+	rm -f *.o lxdialog/*.o *.moc $(clean-files) conf mconf qconf nconf
+
+# This clean-files definition is here to ensure that temporary files from the
+# previous version are removed by make config-clean.
+# It should be removed or emptied when this Makefile get updated again.
+clean-files	:= zconf.tab.c zconf.lex.c zconf.hash.c .tmp_qtcheck
+
+# ===========================================================================
+# Variables needed by the upstream Makefile
+
+# Avoids displaying 'UPD mconf-cfg' in an otherwise quiet make menuconfig
+kecho:=true
+
+CONFIG_SHELL:=$(SHELL)
+srctree:=.
+src:=.
+obj:=.
+Q:=$(if $V,,@)
+cmd = $(cmd_$(1))
+dot-target = $(dir $@).$(notdir $@)
+
+# taken from ../Kbuild.include
+define filechk
+	$(Q)set -e;						\
+	mkdir -p $(dir $@);					\
+	trap "rm -f $(dot-target).tmp" EXIT;			\
+	{ $(filechk_$(1)); } > $(dot-target).tmp;		\
+	if [ ! -r $@ ] || ! cmp -s $@ $(dot-target).tmp; then	\
+		$(kecho) '  UPD     $@';			\
+		mv -f $(dot-target).tmp $@;			\
+	fi
+endef
+
+### Stripped down upstream Makefile follows:
+# ===========================================================================
+# object files used by all kconfig flavours
+common-objs	:= confdata.o expr.o lexer.lex.o parser.tab.o preprocess.o \
+		   symbol.o util.o
+
+$(obj)/lexer.lex.o: $(obj)/parser.tab.h
+HOSTCFLAGS_lexer.lex.o	:= -I $(srctree)/$(src)
+HOSTCFLAGS_parser.tab.o	:= -I $(srctree)/$(src)
+
+# conf: Used for defconfig, oldconfig and related targets
+hostprogs-y	+= conf
+conf-objs	:= conf.o $(common-objs)
+
+# nconf: Used for the nconfig target based on ncurses
+hostprogs-y	+= nconf
+nconf-objs	:= nconf.o nconf.gui.o $(common-objs)
+
+HOSTLDLIBS_nconf	= $(shell . $(obj)/nconf-cfg && echo $$libs)
+HOSTCFLAGS_nconf.o	= $(shell . $(obj)/nconf-cfg && echo $$cflags)
+HOSTCFLAGS_nconf.gui.o	= $(shell . $(obj)/nconf-cfg && echo $$cflags)
+
+$(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg
+
+# mconf: Used for the menuconfig target based on lxdialog
+hostprogs-y	+= mconf
+lxdialog	:= $(addprefix lxdialog/, \
+		     checklist.o inputbox.o menubox.o textbox.o util.o yesno.o)
+mconf-objs	:= mconf.o $(lxdialog) $(common-objs)
+
+HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs)
+$(foreach f, mconf.o $(lxdialog), \
+  $(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags)))
+
+$(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg
+
+# qconf: Used for the xconfig target based on Qt
+hostprogs-y	+= qconf
+qconf-cxxobjs	:= qconf.o
+qconf-objs	:= images.o $(common-objs)
+
+HOSTLDLIBS_qconf	= $(shell . $(obj)/qconf-cfg && echo $$libs)
+HOSTCXXFLAGS_qconf.o	= $(shell . $(obj)/qconf-cfg && echo $$cflags)
+
+$(obj)/qconf.o: $(obj)/qconf-cfg $(obj)/qconf.moc
+
+quiet_cmd_moc = MOC     $@
+      cmd_moc = $(shell . $(obj)/qconf-cfg && echo $$moc) -i $< -o $@
+
+$(obj)/%.moc: $(src)/%.h $(obj)/qconf-cfg
+	$(call cmd,moc)
+
+# check if necessary packages are available, and configure build flags
+filechk_conf_cfg = $(CONFIG_SHELL) $<
+
+$(obj)/%conf-cfg: $(src)/%conf-cfg.sh FORCE
+	$(call filechk,conf_cfg)
+
+clean-files += *conf-cfg
+
+# ===========================================================================
+# OpenWrt rules and final adjustments that need to be made after reading the
+# full upstream Makefile
+
+FORCE:
+
+ifdef BUILD_SHIPPED_FILES
+shipped-files := lexer.lex.c parser.tab.c parser.tab.h
+clean-files += $(shipped-files)
+
+.SECONDARY: $(shipped-files)
+
+%.tab.c %.tab.h: %.y
+	bison -l -d -b $* $<
+
+%.lex.c: %.l
+	flex -L -o$@ $<
+endif
+
+$(foreach f, mconf.o $(lxdialog), \
+  $(eval $f: CFLAGS+=$$(HOSTCFLAGS_$f)))
+
+$(obj)/lexer.lex.o: CFLAGS += $(HOSTCFLAGS_lexer.lex.o)
+$(obj)/parser.tab.o: CFLAGS += $(HOSTCFLAGS_parser.tab.o)
+$(obj)/qconf.o: CXXFLAGS+=$(HOSTCXXFLAGS_qconf.o)
+
+conf: $(conf-objs)
+
+# The *conf-cfg file is used (then filtered out) as the first prerequisite to
+# avoid sourcing it before the script is built, when trying to compute CFLAGS
+# for the actual first prerequisite.  This avoids errors like:
+# '/bin/sh: ./mconf-cfg: No such file or directory'
+mconf: mconf-cfg $(mconf-objs)
+	$(CC) -o $@ $(filter-out mconf-cfg,$^) $(HOSTLDLIBS_mconf)
+
+nconf: nconf-cfg $(nconf-objs)
+	$(CC) -o $@ $(filter-out nconf-cfg,$^) $(HOSTLDLIBS_nconf)
+
+qconf: qconf-cfg $(qconf-cxxobjs) $(qconf-objs)
+	$(CXX) -o $@ $(filter-out qconf-cfg,$^) $(HOSTLDLIBS_qconf)