14 files changed, 542 insertions, 257 deletions

diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 7e257be..5a0d7e5 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -1,207 +1,181 @@
-VERSION=1.2
+VERSION=1.3
 CC=gcc
 CXX=g++
-CFLAGS=-O2 -Wall -g -fPIC
+CFLAGS=-O0 -Wall -g -fPIC
 CXXFLAGS=$(CFLAGS) -I$(HOSTQTDIR)/include
 LDFLAGS=
 LXXFLAGS=$(LDFLAGS) -L$(HOSTQTDIR)/lib -Wl,-rpath,$(HOSTQTDIR)/lib
 LEX=flex
+LFLAGS=-L
 YACC=bison
-YFLAGS=-d -t #-v
+YFLAGS=-l
+#YFLAGS=-d -t -v -l
 ifndef HOSTQTDIR
-ifeq ($(shell if [ -e /usr/share/qt ]; then echo foundit; fi),foundit)
 HOSTQTDIR=/usr/share/qt
-else
-ifeq ($(shell if [ -e /usr/lib/qt ]; then echo foundit; fi),foundit)
-HOSTQTDIR=/usr/lib/qt
-endif
-endif
-endif
-
-ifndef QTLIB
-ifeq ($(shell if [ -e $(HOSTQTDIR)/lib/libqt-mt.so ]; then echo foundit; fi),foundit)
-QTLIB=-lqt-mt
-else
-ifneq ($(shell if [ -e $(HOSTQTDIR)/lib/libqt.so ]; then echo foundit; fi),foundit)
-$(warning Unable to locate libqt.so!)
 endif
-QTLIB=-lqt
-endif
-endif
-
 MOC=$(wildcard $(HOSTQTDIR)/bin/moc)
 
 parse_SRC=zconf.y
 conf_SRC=conf.c $(parse_SRC)
 mconf_SRC=mconf.c $(parse_SRC)
 qconf_SRC=qconf.cc
-lkcc_SRC=cml1.y cml1.l help.l cml1.h expr1.c
 HDR=expr.h lkc.h lkc_proto.h qconf.h
-OTHER=README lkc_spec lkc_overview Makefile.kernel convert-all prepare-all.diff fixup-all.diff \
+OTHER=README lkc-language.txt Makefile.kernel \
 	kconfig.i extconf.rb example
-INST=zconf.y zconf.l confdata.c expr.c symbol.c menu.c conf.c mconf.c qconf.cc kconfig_load.c images.c $(parse_SRC) $(HDR)
-INSTGEN=lex.zconf.c zconf.tab.c zconf.tab.h
+INST=zconf.y zconf.l confdata.c expr.c symbol.c menu.c \
+	conf.c mconf.c qconf.cc kconfig_load.c images.c $(HDR)
+INSTGEN=lex.zconf.c zconf.tab.c
 
 #DEBUG=1
 ifdef DEBUG
 CFLAGS+=-DLKC_DIRECT_LINK
 qconf_SRC+=$(parse_SRC)
 else
 qconf_SRC+=kconfig_load.c
 endif
 
-SRC=$(conf_SRC) $(mconf_SRC) $(qconf_SRC) $(lkcc_SRC)
+SRC=$(conf_SRC) $(mconf_SRC) $(qconf_SRC)
 CSRC=$(filter %.c, $(SRC))
 YSRC=$(filter %.y, $(SRC))
 LSRC=$(filter %.l, $(SRC))
 
 parse_OBJ=$(filter %.o, \
 		$(patsubst %.c,%.o, \
 		$(patsubst %.y,%.tab.o, \
 		$(patsubst %.l,lex.%.o, \
 			$(parse_SRC)))))
 conf_OBJ=$(filter %.o, \
 		$(patsubst %.c,%.o, \
 		$(patsubst %.y,%.tab.o, \
 		$(patsubst %.l,lex.%.o, \
 			$(conf_SRC)))))
 mconf_OBJ=$(filter %.o, \
 		$(patsubst %.c,%.o, \
 		$(patsubst %.y,%.tab.o, \
 		$(patsubst %.l,lex.%.o, \
 			$(mconf_SRC)))))
 qconf_OBJ=$(filter %.o, \
 		$(patsubst %.c,%.o, \
 		$(patsubst %.cc,%.o, \
 		$(patsubst %.y,%.tab.o, \
 		$(patsubst %.l,lex.%.o, \
 			$(qconf_SRC))))))
-lkcc_OBJ=$(filter %.o, \
-		$(patsubst %.c,%.o, \
-		$(patsubst %.y,%.tab.o, \
-		$(patsubst %.l,lex.%.o, \
-			$(lkcc_SRC)))))
-OBJ=$(conf_OBJ) $(mconf_OBJ) $(qconf_OBJ) $(lkcc_OBJ)
+OBJ=$(conf_OBJ) $(mconf_OBJ) $(qconf_OBJ)
 
 ifeq ($(MOC),)
-all: lkcc conf mconf
+all: conf mconf
 else
-all: lkcc conf mconf qconf libkconfig.so
+all: conf mconf qconf libkconfig.so
 endif
 
-lex.help.c: help.l
-lex.help.o: lex.help.c cml1.h expr.h
-lex.cml1.c: cml1.l
-lex.cml1.o: lex.cml1.c cml1.tab.h cml1.h expr.h
-cml1.tab.c: cml1.y
-cml1.tab.h: cml1.y
-cml1.tab.o: cml1.tab.c cml1.h expr.h
-expr1.o: expr1.c expr.h
-
 lkc_deps := lkc.h lkc_proto.h lkc_defs.h expr.h
 
 zconf.tab.c: zconf.y
 zconf.tab.h: zconf.y
 lex.zconf.c: zconf.l
 zconf.tab.o: zconf.tab.c lex.zconf.c confdata.c expr.c symbol.c menu.c $(lkc_deps)
 #lex.zconf.o: lex.zconf.c zconf.tab.h $(lkc_deps)
 #confdata.o: confdata.c $(lkc_deps)
 #expr.o: expr.c $(lkc_deps)
 #symbol.o: symbol.c $(lkc_deps)
 #menu.o: menu.c $(lkc_deps)
 kconfig_load.o: kconfig_load.c $(lkc_deps)
 conf.o: conf.c $(lkc_deps)
 mconf.o: mconf.c $(lkc_deps)
 qconf.moc: qconf.h
 qconf.o: qconf.cc qconf.moc images.c $(lkc_deps)
 
 mconf: $(mconf_OBJ)
 	$(CC) $(LDFLAGS) $^ -o $@
 
 conf: $(conf_OBJ)
 	$(CC) $(LDFLAGS) $^ -o $@
 
 ifeq ($(MOC),)
 qconf:
 	@echo Unable to find the QT installation. Please make sure that the
 	@echo QT development package is correctly installed and the HOSTQTDIR
 	@echo environment variable is set to the correct location.
 	@false
 else
-qconf: $(qconf_OBJ) libkconfig.so
-	$(CXX) $(LXXFLAGS) $^ $(QTLIB) -o $@
+qconf: $(qconf_OBJ)
+	$(CXX) $(LXXFLAGS) $^ -lqt -o $@
 endif
 
-lkcc: $(lkcc_OBJ)
-	$(CC) $(LDFLAGS) $^ -o $@
-
 libkconfig.so: $(parse_OBJ)
 	$(CC) -shared $^ -o $@
 
 lkc_defs.h: lkc_proto.h
 	sed < $< > $@ 's/P(\([^,]*\),.*/#define \1 (\*\1_p)/'
 
 clean:
-	rm -f $(OBJ) lkcc conf qconf mconf *.moc lex.* *.tab.? *.output
+	rm -f $(OBJ) conf qconf mconf *.moc lex.* *.tab.? *.output
+	rm -rf .ruby .python
 
 tgz:
 	mkdir tmp
 	mkdir tmp/lkc-$(VERSION)
 	cp -ra Makefile $(sort $(SRC) $(HDR) $(OTHER) $(INST)) tmp/lkc-$(VERSION)
-	tar -cpvz -C tmp -f lkc-$(VERSION).tar.gz lkc-$(VERSION)
+	tar -cpvz -C tmp --exclude CVS -f lkc-$(VERSION).tar.gz lkc-$(VERSION)
 	rm -rf tmp
 
 %.tab.c %.tab.h: %.y
 	$(YACC) $(YFLAGS) -b $* -p $* $<
 
 lex.%.c: %.l
 	$(LEX) $(LFLAGS) -P$* $<
 
 %.moc: %.h
 	$(HOSTQTDIR)/bin/moc -i $< -o $@
 
 %.o: %.c
 	$(CC) $(CFLAGS) -c $< -o $@
 
 %.o: %.cc
 	$(CXX) $(CXXFLAGS) -c $< -o $@
 
 ifdef KERNELSRC
-install: lkcc $(INSTGEN)
-	set -x; mkdir $(KERNELSRC)/scripts/kconfig; \
-	cp $(sort $(INST)) $(KERNELSRC)/scripts/kconfig; \
+install: $(INSTGEN)
+	set -x; cp $(sort $(INST)) $(KERNELSRC)/scripts/kconfig; \
 	for f in $(INSTGEN); do cp $$f $(KERNELSRC)/scripts/kconfig/$${f}_shipped; done; \
-	cp Makefile.kernel $(KERNELSRC)/scripts/kconfig/Makefile; \
-	LKCSRC=$$PWD; export LKCSRC; \
-	cd $(KERNELSRC); \
-	patch -p0 -N < $$LKCSRC/prepare-all.diff; \
-	sh $$LKCSRC/convert-all; \
-	patch -p0 -N < $$LKCSRC/fixup-all.diff
-
-#	cp Makefile $(KERNELSRC)/scripts/kconfig/Makefile; \
-
-uninstall:
-	patch -p0 -N -R -d $(KERNELSRC) < prepare-all.diff; \
-	cd $(KERNELSRC); \
-	find -name "Kconfig*" | xargs rm; \
-	rm -rf scripts/kconfig log.*
+	cp Makefile.kernel $(KERNELSRC)/scripts/kconfig/Makefile
+
+diff: $(INSTGEN)
+	for f in $(sort $(INST)); do diff -u $(KERNELSRC)/scripts/kconfig/$$f $$f; done; \
+	for f in $(INSTGEN); do diff -u $(KERNELSRC)/scripts/kconfig/$${f}_shipped $$f; done; \
+	diff -u $(KERNELSRC)/scripts/kconfig/Makefile Makefile.kernel
 else
 install:
 	@echo "Please use KERNELSRC=<path/to/linux-kernel> to install"
 endif
 
 ruby: .ruby libkconfig.so .ruby/kconfig.so
 
 .ruby:
 	mkdir .ruby
 
 .ruby/kconfig_wrap.c: kconfig.i kconfig_load.c expr.h lkc_proto.h
 	swig -ruby -o $@ $<
 
 .ruby/Makefile: extconf.rb
 	cd .ruby; ruby ../extconf.rb
 
 .ruby/kconfig.so: .ruby/kconfig_wrap.c .ruby/Makefile
 	make -C .ruby
 
-.PHONY: all tgz clean ruby
+
+PYTHON_INCLUDE=$(shell python -c "import sys; print '-I'+sys.prefix+'/include/python'+sys.version[:3]")
+
+python: .python .python/kconfig.py .python/_kconfig.so
+
+.python:
+	mkdir .python
+
+.python/kconfig_wrap.c .python/kconfig.py: kconfig.i kconfig_load.c expr.h lkc_proto.h
+	swig -python -o .python/kconfig_wrap.c kconfig.i
+
+.python/_kconfig.so: .python/kconfig_wrap.c
+	cd .python; $(CC) $(CFLAGS) -shared kconfig_wrap.c -o _kconfig.so -I.. $(PYTHON_INCLUDE)
+
+
+.PHONY: all tgz clean ruby python
diff --git a/scripts/kconfig/Makefile.kernel b/scripts/kconfig/Makefile.kernel
index beb4dcf..22724a7 100644
--- a/scripts/kconfig/Makefile.kernel
+++ b/scripts/kconfig/Makefile.kernel
@@ -10,59 +10,69 @@
 
 # object files used by all lkc flavours
 libkconfig-objs := zconf.tab.o
 
 host-progs	:= conf mconf qconf
 conf-objs	:= conf.o  libkconfig.so
 mconf-objs	:= mconf.o libkconfig.so
 
 qconf-objs	:= kconfig_load.o
 qconf-cxxobjs	:= qconf.o
 
 clean-files	:= libkconfig.so lkc_defs.h qconf.moc .tmp_qtcheck \
 		   zconf.tab.c zconf.tab.h lex.zconf.c
 
 include $(TOPDIR)/Rules.make
 
-# QT needs some extra effort...
-ifndef QTDIR
-QTDIR		:= /usr/share/qt
-endif
-
-# Executable to generate the .moc file
-MOC=$(wildcard $(QTDIR)/bin/moc)
-
 # generated files seem to need this to find local include files
 HOSTCFLAGS_lex.zconf.o	:= -I$(src)
 HOSTCFLAGS_zconf.tab.o	:= -I$(src)
 
-HOSTLOADLIBES_qconf	:= -L$(QTDIR)/lib -Wl,-rpath,$(QTDIR)/lib -lqt -ldl
-HOSTCXXFLAGS_qconf.o	:= -I$(QTDIR)/include 
+HOSTLOADLIBES_qconf	= -L$(QTDIR)/lib -Wl,-rpath,$(QTDIR)/lib -l$(QTLIB) -ldl
+HOSTCXXFLAGS_qconf.o	= -I$(QTDIR)/include 
 
 $(obj)/conf.o $(obj)/mconf.o $(obj)/qconf.o: $(obj)/zconf.tab.h
 
 $(obj)/qconf.o: $(obj)/.tmp_qtcheck
 
+ifeq ($(MAKECMDGOALS),$(obj)/qconf)
+MOC = $(QTDIR)/bin/moc
+-include $(obj)/.tmp_qtcheck
+
+# QT needs some extra effort...
 $(obj)/.tmp_qtcheck:
-ifeq ($(MOC),)
-	@echo Unable to find the QT installation. Please make sure that the
-	@echo QT development package is correctly installed and the QTDIR
-	@echo environment variable is set to the correct location.
-	@false
-else
-	@touch $@
+	@set -e; for d in $$QTDIR /usr/share/qt /usr/lib/qt3; do \
+	  if [ -f $$d/include/qconfig.h ]; then DIR=$$d; break; fi; \
+	done; \
+	if [ -z "$$DIR" ]; then \
+	  echo "*"; \
+	  echo "* Unable to find the QT installation. Please make sure that the"; \
+	  echo "* QT development package is correctly installed and the QTDIR"; \
+	  echo "* environment variable is set to the correct location."; \
+	  echo "*"; \
+	  false; \
+	fi; \
+	LIB=qt; \
+	if [ -f $$DIR/lib/libqt-mt.so ]; then LIB=qt-mt; fi; \
+	echo "QTDIR=$$DIR" > $@; echo "QTLIB=$$LIB" >> $@; \
+	if [ ! -x $$DIR/bin/moc -a -x /usr/bin/moc ]; then \
+	  echo "*"; \
+	  echo "* Unable to find $$DIR/bin/moc, using /usr/bin/moc instead."; \
+	  echo "*"; \
+	  echo "MOC=/usr/bin/moc" >> $@; \
+	fi
 endif
 
 $(obj)/zconf.tab.o: $(obj)/lex.zconf.c
 
 $(obj)/kconfig_load.o: $(obj)/lkc_defs.h
 
 $(obj)/qconf.o: $(obj)/qconf.moc $(obj)/lkc_defs.h
 
 $(obj)/%.moc: $(src)/%.h
 	$(MOC) -i $< -o $@
 
 $(obj)/lkc_defs.h: $(src)/lkc_proto.h
 	sed < $< > $@ 's/P(\([^,]*\),.*/#define \1 (\*\1_p)/'
 
 
 ###
diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index 74c94c2..1602d5f 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -102,32 +102,33 @@ static void conf_askvalue(struct symbol *sym, const char *def)
 	line[1] = 0;
 
 	switch (input_mode) {
 	case ask_new:
 	case ask_silent:
 		if (sym_has_value(sym)) {
 			printf("%s\n", def);
 			return;
 		}
 		if (!valid_stdin && input_mode == ask_silent) {
 			printf("aborted!\n\n");
 			printf("Console input/output is redirected. ");
 			printf("Run 'make oldconfig' to update configuration.\n\n");
 			exit(1);
 		}
 	case ask_all:
+		fflush(stdout);
 		fgets(line, 128, stdin);
 		return;
 	case set_default:
 		printf("%s\n", def);
 		return;
 	default:
 		break;
 	}
 
 	switch (type) {
 	case S_INT:
 	case S_HEX:
 	case S_STRING:
 		printf("%s\n", def);
 		return;
 	default:
@@ -329,55 +330,57 @@ static int conf_choice(struct menu *menu)
 				continue;
 			printo(menu_get_prompt(cmenu));
 			if (cmenu->sym == def_sym)
 				def_menu = cmenu;
 		}
 		printo(NULL);
 		if (def_menu)
 			printf("[%s] ", menu_get_prompt(def_menu));
 		else {
 			printf("\n");
 			return 1;
 		}
 		switch (input_mode) {
 		case ask_new:
 		case ask_silent:
 		case ask_all:
+			if (is_new)
+				sym->flags |= SYMBOL_NEW;
 			conf_askvalue(sym, menu_get_prompt(def_menu));
 			strip(line);
 			break;
 		default:
 			line[0] = 0;
 			printf("\n");
 		}
 		if (line[0] == '?' && !line[1]) {
 			help = nohelp_text;
 			if (menu->sym->help)
 				help = menu->sym->help;
 			printf("\n%s\n", help);
 			continue;
 		}
 		if (line[0]) {
-			len = strlen(line) - 1;
+			len = strlen(line);
 			line[len] = 0;
 
 			def_menu = NULL;
 			for (cmenu = menu->list; cmenu; cmenu = cmenu->next) {
 				if (!cmenu->sym || !menu_is_visible(cmenu))
 					continue;
-				if (!strncmp(line, menu_get_prompt(cmenu), len)) {
+				if (!strncasecmp(line, menu_get_prompt(cmenu), len)) {
 					def_menu = cmenu;
 					break;
 				}
 			}
 		}
 		if (def_menu) {
 			sym_set_choice_value(sym, def_menu->sym);
 			if (def_menu->list) {
 				indent += 2;
 				conf(def_menu->list);
 				indent -= 2;
 			}
 			return 1;
 		}
 	}
 }
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 0f5fd97..9bf7af9 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -1,33 +1,32 @@
 /*
  * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
  * Released under the terms of the GNU GPL v2.0.
  */
 
+#include <sys/stat.h>
 #include <ctype.h>
-#include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 
 #define LKC_DIRECT_LINK
 #include "lkc.h"
 
 const char conf_def_filename[] = ".config";
-char conf_filename[PATH_MAX+1];
 
 const char conf_defname[] = "arch/$ARCH/defconfig";
 
 const char *conf_confnames[] = {
 	".config",
 	"/lib/modules/$UNAME_RELEASE/.config",
 	"/etc/kernel-config",
 	"/boot/config-$UNAME_RELEASE",
 	conf_defname,
 	NULL,
 };
 
 static char *conf_expand_value(const char *in)
 {
 	struct symbol *sym;
 	const char *src;
@@ -42,151 +41,171 @@ static char *conf_expand_value(const char *in)
 		dst = name;
 		while (isalnum(*src) || *src == '_')
 			*dst++ = *src++;
 		*dst = 0;
 		sym = sym_lookup(name, 0);
 		sym_calc_value(sym);
 		strcat(res_value, sym_get_string_value(sym));
 		in = src;
 	}
 	strcat(res_value, in);
 
 	return res_value;
 }
 
 char *conf_get_default_confname(void)
 {
-	return conf_expand_value(conf_defname);
+	struct stat buf;
+	static char fullname[PATH_MAX+1];
+	char *env, *name;
+
+	name = conf_expand_value(conf_defname);
+	env = getenv(SRCTREE);
+	if (env) {
+		sprintf(fullname, "%s/%s", env, name);
+		if (!stat(fullname, &buf))
+			return fullname;
+	}
+	return name;
 }
 
 int conf_read(const char *name)
 {
 	FILE *in = NULL;
-	char line[128];
+	char line[1024];
 	char *p, *p2;
 	int lineno = 0;
 	struct symbol *sym;
 	struct property *prop;
 	struct expr *e;
 	int i;
 
 	if (name) {
-		in = fopen(name, "r");
-		if (in)
-			strcpy(conf_filename, name);
+		in = zconf_fopen(name);
 	} else {
 		const char **names = conf_confnames;
 		while ((name = *names++)) {
 			name = conf_expand_value(name);
-			in = fopen(name, "r");
+			in = zconf_fopen(name);
 			if (in) {
 				printf("#\n"
 				       "# using defaults found in %s\n"
 				       "#\n", name);
 				break;
 			}
 		}
 	}
 
 	if (!in)
 		return 1;
 
 	for_all_symbols(i, sym) {
-		sym->flags |= SYMBOL_NEW;
+		sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED;
+		sym->flags &= ~SYMBOL_VALID;
 		switch (sym->type) {
 		case S_INT:
 		case S_HEX:
 		case S_STRING:
-			if (S_VAL(sym->def)) {
+			if (S_VAL(sym->def))
 				free(S_VAL(sym->def));
-				S_VAL(sym->def) = NULL;
-			}
 		default:
-			;
+			S_VAL(sym->def) = NULL;
+			S_TRI(sym->def) = no;
 		}
 	}
 
-	while (fgets(line, 128, in)) {
+	while (fgets(line, sizeof(line), in)) {
 		lineno++;
 		switch (line[0]) {
 		case '#':
 			if (memcmp(line + 2, "CONFIG_", 7))
 				continue;
 			p = strchr(line + 9, ' ');
 			if (!p)
 				continue;
 			*p++ = 0;
 			if (strncmp(p, "is not set", 10))
 				continue;
-			//printf("%s -> n\n", line + 9);
 			sym = sym_lookup(line + 9, 0);
 			switch (sym->type) {
 			case S_BOOLEAN:
 			case S_TRISTATE:
 				sym->def = symbol_no.curr;
 				sym->flags &= ~SYMBOL_NEW;
 				break;
 			default:
 				;
 			}
 			break;
 		case 'C':
 			if (memcmp(line, "CONFIG_", 7))
 				continue;
 			p = strchr(line + 7, '=');
 			if (!p)
 				continue;
 			*p++ = 0;
 			p2 = strchr(p, '\n');
 			if (p2)
 				*p2 = 0;
-			//printf("%s -> %s\n", line + 7, p);
 			sym = sym_find(line + 7);
 			if (!sym) {
 				fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line + 7);
 				break;
 			}
 			switch (sym->type) {
-			case S_BOOLEAN:
-				sym->def = symbol_yes.curr;
-				sym->flags &= ~SYMBOL_NEW;
-				break;
 			case S_TRISTATE:
-				if (p[0] == 'm')
-					sym->def = symbol_mod.curr;
-				else
-					sym->def = symbol_yes.curr;
-				sym->flags &= ~SYMBOL_NEW;
+				if (p[0] == 'm') {
+					S_TRI(sym->def) = mod;
+					sym->flags &= ~SYMBOL_NEW;
+					break;
+				}
+			case S_BOOLEAN:
+				if (p[0] == 'y') {
+					S_TRI(sym->def) = yes;
+					sym->flags &= ~SYMBOL_NEW;
+					break;
+				}
+				if (p[0] == 'n') {
+					S_TRI(sym->def) = no;
+					sym->flags &= ~SYMBOL_NEW;
+					break;
+				}
 				break;
 			case S_STRING:
 				if (*p++ != '"')
 					break;
 				for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
 					if (*p2 == '"') {
 						*p2 = 0;
 						break;
 					}
 					memmove(p2, p2 + 1, strlen(p2));
 				}
+				if (!p2) {
+					fprintf(stderr, "%s:%d: invalid string found\n", name, lineno);
+					exit(1);
+				}
 			case S_INT:
 			case S_HEX:
 				if (sym_string_valid(sym, p)) {
 					S_VAL(sym->def) = strdup(p);
 					sym->flags &= ~SYMBOL_NEW;
-				} else
-					fprintf(stderr, "%s:%d:symbol value '%s' invalid for %s\n", name, lineno, p, sym->name);
+				} else {
+					fprintf(stderr, "%s:%d: symbol value '%s' invalid for %s\n", name, lineno, p, sym->name);
+					exit(1);
+				}
 				break;
 			default:
 				;
 			}
 			if (sym_is_choice_value(sym)) {
 				prop = sym_get_choice_prop(sym);
 				switch (S_TRI(sym->def)) {
 				case mod:
 					if (S_TRI(prop->def->def) == yes)
 						/* warn? */;
 					break;
 				case yes:
 					if (S_TRI(prop->def->def) != no)
 						/* warn? */;
 					S_VAL(prop->def->def) = sym;
 					break;
@@ -339,22 +358,21 @@ int conf_write(const char *name)
 		}
 	}
 	fclose(out);
 	fclose(out_h);
 
 	if (!name) {
 		rename(".tmpconfig.h", "include/linux/autoconf.h");
 		name = conf_def_filename;
 		file_write_dep(NULL);
 	} else
 		unlink(".tmpconfig.h");
 
 	sprintf(oldname, "%s.old", name);
 	rename(name, oldname);
 	if (rename(".tmpconfig", name))
 		return 1;
-	strcpy(conf_filename, name);
 
 	sym_change_count = 0;
 
 	return 0;
 }
diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
index fd9c32a..896a296 100644
--- a/scripts/kconfig/expr.h
+++ b/scripts/kconfig/expr.h
@@ -153,38 +153,41 @@ struct property {
 };
 
 #define for_all_properties(sym, st, tok) \
 	for (st = sym->prop; st; st = st->next) \
 		if (st->type == (tok))
 #define for_all_prompts(sym, st) for_all_properties(sym, st, P_PROMPT)
 #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
 #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
 
 struct menu {
 	struct menu *next;
 	struct menu *parent;
 	struct menu *list;
 	struct symbol *sym;
 	struct property *prompt;
 	struct expr *dep;
+	unsigned int flags;
 	//char *help;
 	struct file *file;
 	int lineno;
-	//void *data;
+	void *data;
 };
 
+#define MENU_CHANGED		0x0001
+
 #ifndef SWIG
 
 extern struct file *file_list;
 extern struct file *current_file;
 struct file *lookup_file(const char *name);
 
 extern struct symbol symbol_yes, symbol_no, symbol_mod;
 extern struct symbol *modules_sym;
 extern int cdebug;
 extern int print_type;
 struct expr *expr_alloc_symbol(struct symbol *sym);
 #ifdef CML1
 struct expr *expr_alloc_one(int token, struct expr *ce);
 struct expr *expr_alloc_two(int token, struct expr *e1, struct expr *e2);
 struct expr *expr_alloc_comp(int token, struct symbol *s1, struct symbol *s2);
 #else
diff --git a/scripts/kconfig/kconfig.i b/scripts/kconfig/kconfig.i
index 699cb13..77405fc 100644
--- a/scripts/kconfig/kconfig.i
+++ b/scripts/kconfig/kconfig.i
@@ -18,32 +18,37 @@
 }
 %typemap (in) char * {
 	if ($input == Qnil)
 		$1 = NULL;
 	else
 		$1 = STR2CSTR($input);
 }
 
 %{
 static void expr_to_s_help(void *data, const char *str)
 {
 	rb_str_cat((VALUE)data, str, strlen(str));
 }
 %}
 #endif
 
+#ifdef SWIGPYTHON
+%rename (Property) property;
+%rename (default) def;
+#endif
+
 %immutable;
 %include "expr.h"
 #define P(name,type,arg)        extern type name arg
 %include "lkc_proto.h"
 %mutable;
 
 #ifdef SWIGRUBY
 %predicate menu::isVisible;
 %predicate symbol::isChangable;
 %predicate symbol::isChoice;
 %predicate symbol::isChoiceValue;
 #endif
 
 %extend menu {
 	bool isVisible(void) {
 		return menu_is_visible(self);
diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h
index 688945b..cdd04a9 100644
--- a/scripts/kconfig/lkc.h
+++ b/scripts/kconfig/lkc.h
@@ -8,38 +8,40 @@
 
 #include "expr.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 #ifdef LKC_DIRECT_LINK
 #define P(name,type,arg)	extern type name arg
 #else
 #include "lkc_defs.h"
 #define P(name,type,arg)	extern type (*name ## _p) arg
 #endif
 #include "lkc_proto.h"
 #undef P
 
-void symbol_end(char *help);
+#define SRCTREE "srctree"
+
 int zconfparse(void);
 void zconfdump(FILE *out);
 
 extern int zconfdebug;
 void zconf_starthelp(void);
+FILE *zconf_fopen(const char *name);
 void zconf_initscan(const char *name);
 void zconf_nextfile(const char *name);
 int zconf_lineno(void);
 char *zconf_curname(void);
 
 /* confdata.c */
 extern const char conf_def_filename[];
 extern char conf_filename[];
 
 char *conf_get_default_confname(void);
 
 /* kconfig_load.c */
 void kconfig_load(void);
 
 /* menu.c */
 void menu_init(void);
@@ -48,32 +50,33 @@ void menu_end_menu(void);
 void menu_add_entry(struct symbol *sym);
 void menu_end_entry(void);
 struct property *create_prop(enum prop_type type);
 void menu_add_dep(struct expr *dep);
 struct property *menu_add_prop(int token, char *prompt, struct symbol *def, struct expr *dep);
 void menu_finalize(struct menu *parent);
 void menu_set_type(int type);
 struct file *file_lookup(const char *name);
 int file_write_dep(const char *name);
 
 extern struct menu *current_entry;
 extern struct menu *current_menu;
 
 /* symbol.c */
 void sym_init(void);
 void sym_clear_all_valid(void);
+void sym_set_changed(struct symbol *sym);
 
 static inline tristate sym_get_tristate_value(struct symbol *sym)
 {
 	return S_TRI(sym->curr);
 }
 
 
 static inline struct symbol *sym_get_choice_value(struct symbol *sym)
 {
 	return (struct symbol *)S_VAL(sym->curr);
 }
 
 static inline bool sym_set_choice_value(struct symbol *ch, struct symbol *chval)
 {
 	return sym_set_tristate_value(chval, yes);
 }
diff --git a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c
index dec8603..eba5ff7 100644
--- a/scripts/kconfig/mconf.c
+++ b/scripts/kconfig/mconf.c
@@ -1,128 +1,151 @@
 /*
  * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
  * Released under the terms of the GNU GPL v2.0.
+ *
+ * Introduced single menu mode (show all sub-menus in one large tree).
+ * 2002-11-06 Petr Baudis <pasky@ucw.cz>
  */
 
 #include <sys/ioctl.h>
 #include <sys/wait.h>
 #include <ctype.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <limits.h>
 #include <signal.h>
 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>
+#include <termios.h>
 #include <unistd.h>
 
 #define LKC_DIRECT_LINK
 #include "lkc.h"
 
 static char menu_backtitle[128];
 static const char menu_instructions[] =
 	"Arrow keys navigate the menu.  "
 	"<Enter> selects submenus --->.  "
 	"Highlighted letters are hotkeys.  "
 	"Pressing <Y> includes, <N> excludes, <M> modularizes features.  "
 	"Press <Esc><Esc> to exit, <?> for Help.  "
 	"Legend: [*] built-in  [ ] excluded  <M> module  < > module capable",
 radiolist_instructions[] =
 	"Use the arrow keys to navigate this window or "
 	"press the hotkey of the item you wish to select "
 	"followed by the <SPACE BAR>. "
 	"Press <?> for additional information about this option.",
 inputbox_instructions_int[] =
 	"Please enter a decimal value. "
 	"Fractions will not be accepted.  "
 	"Use the <TAB> key to move from the input field to the buttons below it.",
 inputbox_instructions_hex[] =
 	"Please enter a hexadecimal value. "
 	"Use the <TAB> key to move from the input field to the buttons below it.",
 inputbox_instructions_string[] =
 	"Please enter a string value. "
 	"Use the <TAB> key to move from the input field to the buttons below it.",
 setmod_text[] =
 	"This feature depends on another which has been configured as a module.\n"
 	"As a result, this feature will be built as a module.",
 nohelp_text[] =
-	"There is no help available for this option.\n",
+	"There is no help available for this kernel option.\n",
 load_config_text[] =
 	"Enter the name of the configuration file you wish to load.  "
 	"Accept the name shown to restore the configuration you "
 	"last retrieved.  Leave blank to abort.",
 load_config_help[] =
 	"\n"
-	"For various reasons, one may wish to keep several different\n"
+	"For various reasons, one may wish to keep several different kernel\n"
 	"configurations available on a single machine.\n"
 	"\n"
 	"If you have saved a previous configuration in a file other than the\n"
-	"default, entering the name of the file here will allow you\n"
+	"kernel's default, entering the name of the file here will allow you\n"
 	"to modify that configuration.\n"
 	"\n"
 	"If you are uncertain, then you have probably never used alternate\n"
 	"configuration files.  You should therefor leave this blank to abort.\n",
 save_config_text[] =
 	"Enter a filename to which this configuration should be saved "
 	"as an alternate.  Leave blank to abort.",
 save_config_help[] =
 	"\n"
-	"For various reasons, one may wish to keep different\n"
+	"For various reasons, one may wish to keep different kernel\n"
 	"configurations available on a single machine.\n"
 	"\n"
 	"Entering a file name here will allow you to later retrieve, modify\n"
 	"and use the current configuration as an alternate to whatever\n"
 	"configuration options you have selected at that time.\n"
 	"\n"
 	"If you are uncertain what all this means then you should probably\n"
 	"leave this blank.\n"
 ;
 
 static char buf[4096], *bufptr = buf;
 static char input_buf[4096];
+static char filename[PATH_MAX+1] = ".config";
 static char *args[1024], **argptr = args;
 static int indent = 0;
+static struct termios ios_org;
 static int rows, cols;
 static struct menu *current_menu;
 static int child_count;
 static int do_resize;
+static int single_menu_mode;
 
 static void conf(struct menu *menu);
 static void conf_choice(struct menu *menu);
 static void conf_string(struct menu *menu);
 static void conf_load(void);
 static void conf_save(void);
 static void show_textbox(const char *title, const char *text, int r, int c);
 static void show_helptext(const char *title, const char *text);
 static void show_help(struct menu *menu);
 static void show_readme(void);
 
 static void cprint_init(void);
 static int cprint1(const char *fmt, ...);
 static void cprint_done(void);
 static int cprint(const char *fmt, ...);
 
 static void init_wsize(void)
 {
 	struct winsize ws;
+	char *env;
 
 	if (ioctl(1, TIOCGWINSZ, &ws) == -1) {
 		rows = 24;
 		cols = 80;
 	} else {
 		rows = ws.ws_row;
 		cols = ws.ws_col;
+		if (!rows) {
+			env = getenv("LINES");
+			if (env)
+				rows = atoi(env);
+			if (!rows)
+				rows = 24;
+		}
+		if (!cols) {
+			env = getenv("COLUMNS");
+			if (env)
+				cols = atoi(env);
+			if (!cols)
+				cols = 80;
+		}
 	}
 
 	if (rows < 19 || cols < 80) {
 		fprintf(stderr, "Your display is too small to run Menuconfig!\n");
 		fprintf(stderr, "It must be at least 19 lines by 80 columns.\n");
 		exit(1);
 	}
 
 	rows -= 4;
 	cols -= 5;
 }
 
 static void cprint_init(void)
 {
 	bufptr = buf;
 	argptr = args;
@@ -261,36 +284,46 @@ static void build_conf(struct menu *menu)
 	int type, tmp, doint = 2;
 	tristate val;
 	char ch;
 
 	if (!menu_is_visible(menu))
 		return;
 
 	sym = menu->sym;
 	prop = menu->prompt;
 	if (!sym) {
 		if (prop && menu != current_menu) {
 			const char *prompt = menu_get_prompt(menu);
 			switch (prop->type) {
 			case P_MENU:
 				child_count++;
 				cprint("m%p", menu);
-				if (menu->parent != &rootmenu)
-					cprint1("   %*c", indent + 1, ' ');
-				cprint1("%s  --->", prompt);
+
+				if (single_menu_mode) {
+					cprint1("%s%*c%s",
+						menu->data ? "-->" : "++>",
+						indent + 1, ' ', prompt);
+				} else {
+					if (menu->parent != &rootmenu)
+						cprint1("   %*c", indent + 1, ' ');
+					cprint1("%s  --->", prompt);
+				}
+
 				cprint_done();
+				if (single_menu_mode && menu->data)
+					goto conf_childs;
 				return;
 			default:
 				if (prompt) {
 					child_count++;
 					cprint(":%p", menu);
 					cprint("---%*c%s", indent + 1, ' ', prompt);
 				}
 			}
 		} else
 			doint = 0;
 		goto conf_childs;
 	}
 
 	type = sym_get_type(sym);
 	if (sym_is_choice(sym)) {
 		struct symbol *def_sym = sym_get_choice_value(sym);
@@ -379,32 +412,33 @@ static void build_conf(struct menu *menu)
 
 conf_childs:
 	indent += doint;
 	for (child = menu->list; child; child = child->next)
 		build_conf(child);
 	indent -= doint;
 }
 
 static void conf(struct menu *menu)
 {
 	struct menu *submenu;
 	const char *prompt = menu_get_prompt(menu);
 	struct symbol *sym;
 	char active_entry[40];
 	int stat, type, i;
 
+	unlink("lxdialog.scrltmp");
 	active_entry[0] = 0;
 	while (1) {
 		cprint_init();
 		cprint("--title");
 		cprint("%s", prompt ? prompt : "Main Menu");
 		cprint("--menu");
 		cprint(menu_instructions);
 		cprint("%d", rows);
 		cprint("%d", cols);
 		cprint("%d", rows - 10);
 		cprint("%s", active_entry);
 		current_menu = menu;
 		build_conf(menu);
 		if (!child_count)
 			break;
 		if (menu == &rootmenu) {
@@ -429,33 +463,36 @@ static void conf(struct menu *menu)
 		for (i = 0; input_buf[i] && !isspace(input_buf[i]); i++)
 			;
 		if (i >= sizeof(active_entry))
 			i = sizeof(active_entry) - 1;
 		input_buf[i] = 0;
 		strcpy(active_entry, input_buf);
 
 		sym = NULL;
 		submenu = NULL;
 		if (sscanf(input_buf + 1, "%p", &submenu) == 1)
 			sym = submenu->sym;
 
 		switch (stat) {
 		case 0:
 			switch (type) {
 			case 'm':
-				conf(submenu);
+				if (single_menu_mode)
+					submenu->data = (void *) !submenu->data;
+				else
+					conf(submenu);
 				break;
 			case 't':
 				if (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)
 					conf_choice(submenu);
 				break;
 			case 's':
 				conf_string(submenu);
 				break;
 			case 'L':
 				conf_load();
 				break;
 			case 'S':
 				conf_save();
 				break;
 			}
 			break;
@@ -471,32 +508,34 @@ static void conf(struct menu *menu)
 					break;
 				if (sym_set_tristate_value(sym, mod))
 					show_textbox(NULL, setmod_text, 6, 74);
 			}
 			break;
 		case 4:
 			if (type == 't')
 				sym_set_tristate_value(sym, no);
 			break;
 		case 5:
 			if (type == 't')
 				sym_set_tristate_value(sym, mod);
 			break;
 		case 6:
 			if (type == 't')
 				sym_toggle_tristate_value(sym);
+			else if (type == 'm')
+				conf(submenu);
 			break;
 		}
 	}
 }
 
 static void show_textbox(const char *title, const char *text, int r, int c)
 {
 	int fd;
 
 	fd = creat(".help.tmp", 0777);
 	write(fd, text, strlen(text));
 	close(fd);
 	do {
 		cprint_init();
 		if (title) {
 			cprint("--title");
@@ -505,37 +544,45 @@ static void show_textbox(const char *title, const char *text, int r, int c)
 		cprint("--textbox");
 		cprint(".help.tmp");
 		cprint("%d", r);
 		cprint("%d", c);
 	} while (exec_conf() < 0);
 	unlink(".help.tmp");
 }
 
 static void show_helptext(const char *title, const char *text)
 {
 	show_textbox(title, text, rows, cols);
 }
 
 static void show_help(struct menu *menu)
 {
 	const char *help;
+	char *helptext;
+	struct symbol *sym = menu->sym;
 
-	help = menu->sym->help;
+	help = sym->help;
 	if (!help)
 		help = nohelp_text;
-	show_helptext(menu_get_prompt(menu), help);
+	if (sym->name) {
+		helptext = malloc(strlen(sym->name) + strlen(help) + 16);
+		sprintf(helptext, "CONFIG_%s:\n\n%s", sym->name, help);
+		show_helptext(menu_get_prompt(menu), helptext);
+		free(helptext);
+	} else
+		show_helptext(menu_get_prompt(menu), help);
 }
 
 static void show_readme(void)
 {
 	do {
 		cprint_init();
 		cprint("--textbox");
 		cprint("scripts/README.Menuconfig");
 		cprint("%d", rows);
 		cprint("%d", cols);
 	} while (exec_conf() == -1);
 }
 
 static void conf_choice(struct menu *menu)
 {
 	const char *prompt = menu_get_prompt(menu);
@@ -618,94 +665,116 @@ static void conf_string(struct menu *menu)
 		case 255:
 			return;
 		}
 	}
 }
 
 static void conf_load(void)
 {
 	int stat;
 
 	while (1) {
 		cprint_init();
 		cprint("--inputbox");
 		cprint(load_config_text);
 		cprint("11");
 		cprint("55");
-		cprint("%s", conf_filename);
+		cprint("%s", filename);
 		stat = exec_conf();
 		switch(stat) {
 		case 0:
 			if (!input_buf[0])
 				return;
 			if (!conf_read(input_buf))
 				return;
 			show_textbox(NULL, "File does not exist!", 5, 38);
 			break;
 		case 1:
 			show_helptext("Load Alternate Configuration", load_config_help);
 			break;
 		case 255:
 			return;
 		}
 	}
 }
 
 static void conf_save(void)
 {
 	int stat;
 
 	while (1) {
 		cprint_init();
 		cprint("--inputbox");
 		cprint(save_config_text);
 		cprint("11");
 		cprint("55");
-		cprint("%s", conf_filename);
+		cprint("%s", filename);
 		stat = exec_conf();
 		switch(stat) {
 		case 0:
 			if (!input_buf[0])
 				return;
 			if (!conf_write(input_buf))
 				return;
 			show_textbox(NULL, "Can't create file!  Probably a nonexistent directory.", 5, 60);
 			break;
 		case 1:
 			show_helptext("Save Alternate Configuration", save_config_help);
 			break;
 		case 255:
 			return;
 		}
 	}
 }
 
+static void conf_cleanup(void)
+{
+	tcsetattr(1, TCSAFLUSH, &ios_org);
+	unlink(".help.tmp");
+	unlink("lxdialog.scrltmp");
+}
+
 int main(int ac, char **av)
 {
+	struct symbol *sym;
+	char *mode;
 	int stat;
+
 	conf_parse(av[1]);
 	conf_read(NULL);
 
-	sprintf(menu_backtitle, "Configuration");
+	sym = sym_lookup("KERNELRELEASE", 0);
+	sym_calc_value(sym);
+	sprintf(menu_backtitle, "Linux Kernel v%s Configuration",
+		sym_get_string_value(sym));
+
+	mode = getenv("MENUCONFIG_MODE");
+	if (mode) {
+		if (!strcasecmp(mode, "single_menu"))
+			single_menu_mode = 1;
+	}
 
+	tcgetattr(1, &ios_org);
+	atexit(conf_cleanup);
 	init_wsize();
 	conf(&rootmenu);
 
 	do {
 		cprint_init();
 		cprint("--yesno");
 		cprint("Do you wish to save your new configuration?");
 		cprint("5");
 		cprint("60");
 		stat = exec_conf();
 	} while (stat < 0);
 
 	if (stat == 0) {
 		conf_write(NULL);
 		printf("\n\n"
-			"*** End of configuration.\n"
-			"*** Check the top-level Makefile for additional configuration.\n");
+			"*** End of Linux kernel configuration.\n"
+			"*** Check the top-level Makefile for additional configuration.\n"
+			"*** Next, you may run 'make bzImage', 'make bzdisk', or 'make install'.\n\n");
 	} else
-		printf("\n\nYour configuration changes were NOT saved.\n\n");
+		printf("\n\nYour kernel configuration changes were NOT saved.\n\n");
 
 	return 0;
 }
diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c
index 4595110..24be0ec 100644
--- a/scripts/kconfig/menu.c
+++ b/scripts/kconfig/menu.c
@@ -277,33 +277,33 @@ struct file *file_lookup(const char *name)
 	}
 
 	file = malloc(sizeof(*file));
 	memset(file, 0, sizeof(*file));
 	file->name = strdup(name);
 	file->next = file_list;
 	file_list = file;
 	return file;
 }
 
 int file_write_dep(const char *name)
 {
 	struct file *file;
 	FILE *out;
 
 	if (!name)
-		name = "..config.cmd";
+		name = ".config.cmd";
 	out = fopen("..config.tmp", "w");
 	if (!out)
 		return 1;
 	fprintf(out, "deps_config := \\\n");
 	for (file = file_list; file; file = file->next) {
 		if (file->next)
 			fprintf(out, "\t%s \\\n", file->name);
 		else
 			fprintf(out, "\t%s\n", file->name);
 	}
 	fprintf(out, "\n.config include/linux/autoconf.h: $(deps_config)\n\n$(deps_config):\n");
 	fclose(out);
 	rename("..config.tmp", name);
 	return 0;
 }
 
diff --git a/scripts/kconfig/qconf.cc b/scripts/kconfig/qconf.cc
index feefa1c..bed541d 100644
--- a/scripts/kconfig/qconf.cc
+++ b/scripts/kconfig/qconf.cc
@@ -4,41 +4,48 @@
  */
 
 #include <qapplication.h>
 #include <qmainwindow.h>
 #include <qtoolbar.h>
 #include <qvbox.h>
 #include <qsplitter.h>
 #include <qlistview.h>
 #include <qtextview.h>
 #include <qlineedit.h>
 #include <qmenubar.h>
 #include <qmessagebox.h>
 #include <qaction.h>
 #include <qheader.h>
 #include <qfiledialog.h>
 #include <qregexp.h>
+#if QT_VERSION >= 300
+#include <qsettings.h>
+#endif
+
 #include <stdlib.h>
 
 #include "lkc.h"
 #include "qconf.h"
 
 #include "qconf.moc"
 #include "images.c"
 
 static QApplication *configApp;
+#if QT_VERSION >= 300
+static QSettings *configSettings;
+#endif
 
 /*
  * update all the children of a menu entry
  *   removes/adds the entries from the parent widget as necessary
  *
  * parent: either the menu list widget or a menu entry widget
  * menu: entry to be updated
  */
 template <class P>
 static void updateMenuList(P* parent, struct menu* menu)
 {
 	struct menu* child;
 	ConfigList* list = parent->listView();
 	ConfigItem* item;
 	ConfigItem* last;
 	bool visible;
@@ -60,35 +67,43 @@ static void updateMenuList(P* parent, struct menu* menu)
 		switch (mode) {
 		case menuMode:
 			if (type != P_ROOTMENU)
 				goto hide;
 			break;
 		case symbolMode:
 			if (type == P_ROOTMENU)
 				goto hide;
 			break;
 		default:
 			break;
 		}
 
 		visible = menu_is_visible(child);
 		if (showAll || visible) {
 			if (!item || item->menu != child)
-				item = new ConfigItem(parent, last, child);
-			item->visible = visible;
-			item->updateMenu();
+				item = new ConfigItem(parent, last, child, visible);
+			else {
+				item->visible = visible;
+				if (item->updateNeeded()) {
+					ConfigItem* i = (ConfigItem*)child->data;
+					for (; i; i = i->nextItem) {
+						i->updateMenu();
+					}
+				} else if (list->updateAll)
+					item->updateMenu();
+			}
 
 			if (mode == fullMode || mode == menuMode ||
 			    (type != P_MENU && type != P_ROOTMENU))
 				updateMenuList(item, child);
 			else
 				updateMenuList(item, 0);
 			last = item;
 			continue;
 		}
 	hide:	
 		if (item && item->menu == child) {
 			last = parent->firstChild();
 			if (last == item)
 				last = 0;
 			else while (last->nextSibling() != item)
 				last = last->nextSibling();
@@ -107,62 +122,48 @@ void ConfigItem::okRename(int col)
 	Parent::okRename(col);
 	sym_set_string_value(menu->sym, text(dataColIdx).latin1());
 }
 #endif
 
 /*
  * update the displayed of a menu entry
  */
 void ConfigItem::updateMenu(void)
 {
 	ConfigList* list;
 	struct symbol* sym;
 	QString prompt;
 	int type;
 	enum prop_type ptype;
 	tristate expr;
-	bool update;
 
 	list = listView();
-	update = doInit;
-	if (update)
-		doInit = false;
-	else
-		update = list->updateAll;
 
 	sym = menu->sym;
 	if (!sym) {
-		if (update) {
-			setText(promptColIdx, menu_get_prompt(menu));
-			ptype = menu->prompt ? menu->prompt->type : P_UNKNOWN;
-			if ((ptype == P_ROOTMENU || ptype == P_MENU) &&
-			    (list->mode == singleMode || list->mode == symbolMode))
-				setPixmap(promptColIdx, list->menuPix);
-			else
-				setPixmap(promptColIdx, 0);
-		}
+		setText(promptColIdx, menu_get_prompt(menu));
+		ptype = menu->prompt ? menu->prompt->type : P_UNKNOWN;
+		if ((ptype == P_ROOTMENU || ptype == P_MENU) &&
+		    (list->mode == singleMode || list->mode == symbolMode))
+			setPixmap(promptColIdx, list->menuPix);
+		else
+			setPixmap(promptColIdx, 0);
 		return;
 	}
 
-	sym_calc_value(sym);
-	if (!(sym->flags & SYMBOL_CHANGED) && !update)
-		return;
-
-	sym->flags &= ~SYMBOL_CHANGED;
-
-	setText(nameColIdx, menu->sym->name);
+	setText(nameColIdx, sym->name);
 
 	type = sym_get_type(sym);
 	switch (type) {
 	case S_BOOLEAN:
 	case S_TRISTATE:
 		char ch;
 
 		prompt = menu_get_prompt(menu);
 		if (!sym_is_changable(sym) && !list->showAll) {
 			setText(noColIdx, 0);
 			setText(modColIdx, 0);
 			setText(yesColIdx, 0);
 			break;
 		}
 		expr = sym_get_tristate_value(sym);
 		switch (expr) {
@@ -191,112 +192,134 @@ void ConfigItem::updateMenu(void)
 		if (expr != no)
 			setText(noColIdx, sym_tristate_within_range(sym, no) ? "_" : 0);
 		if (expr != mod)
 			setText(modColIdx, sym_tristate_within_range(sym, mod) ? "_" : 0);
 		if (expr != yes)
 			setText(yesColIdx, sym_tristate_within_range(sym, yes) ? "_" : 0);
 
 		setText(dataColIdx, QChar(ch));
 		break;
 	case S_INT:
 	case S_HEX:
 	case S_STRING:
 		const char* data;
 
 		data = sym_get_string_value(sym);
 #if QT_VERSION >= 300
-		setRenameEnabled(list->mapIdx(dataColIdx), TRUE);
+		int i = list->mapIdx(dataColIdx);
+		if (i >= 0)
+			setRenameEnabled(i, TRUE);
 #endif
 		setText(dataColIdx, data);
 		if (type == S_STRING)
 			prompt.sprintf("%s: %s", menu_get_prompt(menu), data);
 		else
 			prompt.sprintf("(%s) %s", data, menu_get_prompt(menu));
 		break;
 	}
 	if (!sym_has_value(sym) && visible)
 		prompt += " (NEW)";
 	setText(promptColIdx, prompt);
 }
 
+bool ConfigItem::updateNeeded(void)
+{
+	struct symbol* sym = menu->sym;
+	if (sym)
+		sym_calc_value(sym);
+	if (menu->flags & MENU_CHANGED) {
+		menu->flags &= ~MENU_CHANGED;
+		return true;
+	}
+	return false;
+}
+
 void ConfigItem::paintCell(QPainter* p, const QColorGroup& cg, int column, int width, int align)
 {
 	ConfigList* list = listView();
 
 	if (visible) {
 		if (isSelected() && !list->hasFocus() && list->mode == menuMode)
 			Parent::paintCell(p, list->inactivedColorGroup, column, width, align);
 		else
 			Parent::paintCell(p, cg, column, width, align);
 	} else
 		Parent::paintCell(p, list->disabledColorGroup, column, width, align);
 }
 
 /*
  * construct a menu entry
  */
 void ConfigItem::init(void)
 {
 	ConfigList* list = listView();
-#if QT_VERSION < 300
-	visible = TRUE;
-#endif
-	//menu->data = this;
+	nextItem = (ConfigItem*)menu->data;
+	menu->data = this;
+
 	if (list->mode != fullMode)
 		setOpen(TRUE);
-	doInit= true;
+	if (menu->sym)
+		sym_calc_value(menu->sym);
+	updateMenu();
 }
 
 /*
  * destruct a menu entry
  */
 ConfigItem::~ConfigItem(void)
 {
-	//menu->data = 0;
+	ConfigItem** ip = &(ConfigItem*)menu->data;
+	for (; *ip; ip = &(*ip)->nextItem) {
+		if (*ip == this) {
+			*ip = nextItem;
+			break;
+		}
+	}
 }
 
 void ConfigLineEdit::show(ConfigItem* i)
 {
 	item = i;
 	if (sym_get_string_value(item->menu->sym))
 		setText(sym_get_string_value(item->menu->sym));
 	else
 		setText(0);
 	Parent::show();
 	setFocus();
 }
 
 void ConfigLineEdit::keyPressEvent(QKeyEvent* e)
 {
 	switch (e->key()) {
 	case Key_Escape:
 		break;
 	case Key_Return:
 	case Key_Enter:
 		sym_set_string_value(item->menu->sym, text().latin1());
-		emit lineChanged(item);
+		parent()->updateList(item);
 		break;
 	default:
 		Parent::keyPressEvent(e);
 		return;
 	}
 	e->accept();
+	parent()->list->setFocus();
 	hide();
 }
 
-ConfigList::ConfigList(QWidget* p, ConfigView* cv)
+ConfigList::ConfigList(ConfigView* p, ConfigMainWindow* cv)
 	: Parent(p), cview(cv),
 	  updateAll(false),
 	  symbolYesPix(xpm_symbol_yes), symbolModPix(xpm_symbol_mod), symbolNoPix(xpm_symbol_no),
 	  choiceYesPix(xpm_choice_yes), choiceNoPix(xpm_choice_no), menuPix(xpm_menu), menuInvPix(xpm_menu_inv),
 	  showAll(false), showName(false), showRange(false), showData(false),
 	  rootEntry(0)
 {
 	int i;
 
 	setSorting(-1);
 	setRootIsDecorated(TRUE);
 	disabledColorGroup = palette().active();
 	disabledColorGroup.setColor(QColorGroup::Text, palette().disabled().text());
 	inactivedColorGroup = palette().active();
 	inactivedColorGroup.setColor(QColorGroup::Highlight, palette().disabled().highlight());
 
@@ -339,105 +362,106 @@ void ConfigList::updateSelection(void)
 	ConfigItem* item = (ConfigItem*)selectedItem();
 	if (!item)
 		return;
 
 	cview->setHelp(item);
 
 	menu = item->menu;
 	type = menu->prompt ? menu->prompt->type : P_UNKNOWN;
 	if (mode == menuMode && (type == P_MENU || type == P_ROOTMENU))
 		emit menuSelected(menu);
 }
 
 void ConfigList::updateList(ConfigItem* item)
 {
 	(void)item;	// unused so far
 	updateMenuList(this, rootEntry);
+	triggerUpdate();
 }
 
 void ConfigList::setAllOpen(bool open)
 {
 	QListViewItemIterator it(this);
 
 	for (; it.current(); it++)
 		it.current()->setOpen(open);
 }
 
 void ConfigList::setValue(ConfigItem* item, tristate val)
 {
 	struct symbol* sym;
 	int type;
 	tristate oldval;
 
 	sym = item->menu->sym;
 	if (!sym)
 		return;
 
 	type = sym_get_type(sym);
 	switch (type) {
 	case S_BOOLEAN:
 	case S_TRISTATE:
 		oldval = sym_get_tristate_value(sym);
 
 		if (!sym_set_tristate_value(sym, val))
 			return;
 		if (oldval == no && item->menu->list)
 			item->setOpen(TRUE);
-		emit symbolChanged(item);
+		parent()->updateList(item);
 		break;
 	}
 }
 
 void ConfigList::changeValue(ConfigItem* item)
 {
 	struct symbol* sym;
 	struct menu* menu;
 	int type, oldexpr, newexpr;
 
 	menu = item->menu;
 	sym = menu->sym;
 	if (!sym) {
 		if (item->menu->list)
 			item->setOpen(!item->isOpen());
 		return;
 	}
 
 	type = sym_get_type(sym);
 	switch (type) {
 	case S_BOOLEAN:
 	case S_TRISTATE:
 		oldexpr = sym_get_tristate_value(sym);
 		newexpr = sym_toggle_tristate_value(sym);
 		if (item->menu->list) {
 			if (oldexpr == newexpr)
 				item->setOpen(!item->isOpen());
 			else if (oldexpr == no)
 				item->setOpen(TRUE);
 		}
 		if (oldexpr != newexpr)
-			emit symbolChanged(item);
+			parent()->updateList(item);
 		break;
 	case S_INT:
 	case S_HEX:
 	case S_STRING:
 #if QT_VERSION >= 300
 		if (colMap[dataColIdx] >= 0)
 			item->startRename(colMap[dataColIdx]);
 		else
 #endif
-			lineEdit->show(item);
+			parent()->lineEdit->show(item);
 		break;
 	}
 }
 
 void ConfigList::setRootMenu(struct menu *menu)
 {
 	enum prop_type type;
 
 	if (rootEntry == menu)
 		return;
 	type = menu && menu->prompt ? menu->prompt->type : P_UNKNOWN;
 	if (type != P_MENU && type != P_ROOTMENU)
 		return;
 	updateMenuList(this, 0);
 	rootEntry = menu;
 	updateListAll();
@@ -503,33 +527,33 @@ void ConfigList::keyPressEvent(QKeyEvent* ev)
 		setValue(item, mod);
 		break;
 	case Key_Y:
 		setValue(item, yes);
 		break;
 	default:
 		Parent::keyPressEvent(ev);
 		return;
 	}
 	ev->accept();
 }
 
 void ConfigList::contentsMousePressEvent(QMouseEvent* e)
 {
 	//QPoint p(contentsToViewport(e->pos()));
 	//printf("contentsMousePressEvent: %d,%d\n", p.x(), p.y());
-	QListView::contentsMousePressEvent(e);
+	Parent::contentsMousePressEvent(e);
 }
 
 void ConfigList::contentsMouseReleaseEvent(QMouseEvent* e)
 {
 	QPoint p(contentsToViewport(e->pos()));
 	ConfigItem* item = (ConfigItem*)itemAt(p);
 	struct menu *menu;
 	const QPixmap* pm;
 	int idx, x;
 
 	if (!item)
 		goto skip;
 
 	menu = item->menu;
 	x = header()->offset() + p.x();
 	idx = colRevMap[header()->sectionAt(x)];
@@ -550,105 +574,161 @@ void ConfigList::contentsMouseReleaseEvent(QMouseEvent* e)
 	case noColIdx:
 		setValue(item, no);
 		break;
 	case modColIdx:
 		setValue(item, mod);
 		break;
 	case yesColIdx:
 		setValue(item, yes);
 		break;
 	case dataColIdx:
 		changeValue(item);
 		break;
 	}
 
 skip:
 	//printf("contentsMouseReleaseEvent: %d,%d\n", p.x(), p.y());
-	QListView::contentsMouseReleaseEvent(e);
+	Parent::contentsMouseReleaseEvent(e);
 }
 
 void ConfigList::contentsMouseMoveEvent(QMouseEvent* e)
 {
 	//QPoint p(contentsToViewport(e->pos()));
 	//printf("contentsMouseMoveEvent: %d,%d\n", p.x(), p.y());
-	QListView::contentsMouseMoveEvent(e);
+	Parent::contentsMouseMoveEvent(e);
 }
 
 void ConfigList::contentsMouseDoubleClickEvent(QMouseEvent* e)
 {
 	QPoint p(contentsToViewport(e->pos()));
 	ConfigItem* item = (ConfigItem*)itemAt(p);
 	struct menu *menu;
 	enum prop_type ptype;
 
 	if (!item)
 		goto skip;
 	menu = item->menu;
 	ptype = menu->prompt ? menu->prompt->type : P_UNKNOWN;
 	if ((ptype == P_ROOTMENU || ptype == P_MENU) &&
 	    (mode == singleMode || mode == symbolMode))
 		emit menuSelected(menu);
+	else if (menu->sym)
+		changeValue(item);
 
 skip:
 	//printf("contentsMouseDoubleClickEvent: %d,%d\n", p.x(), p.y());
-	QListView::contentsMouseDoubleClickEvent(e);
+	Parent::contentsMouseDoubleClickEvent(e);
 }
 
 void ConfigList::focusInEvent(QFocusEvent *e)
 {
 	Parent::focusInEvent(e);
 
 	QListViewItem* item = currentItem();
 	if (!item)
 		return;
 
 	setSelected(item, TRUE);
 	emit gotFocus();
 }
 
+ConfigView* ConfigView::viewList;
+
+ConfigView::ConfigView(QWidget* parent, ConfigMainWindow* cview)
+	: Parent(parent)
+{
+	list = new ConfigList(this, cview);
+	lineEdit = new ConfigLineEdit(this);
+	lineEdit->hide();
+
+	this->nextView = viewList;
+	viewList = this;
+}
+
+ConfigView::~ConfigView(void)
+{
+	ConfigView** vp;
+
+	for (vp = &viewList; *vp; vp = &(*vp)->nextView) {
+		if (*vp == this) {
+			*vp = nextView;
+			break;
+		}
+	}
+}
+
+void ConfigView::updateList(ConfigItem* item)
+{
+	ConfigView* v;
+
+	for (v = viewList; v; v = v->nextView)
+		v->list->updateList(item);
+}
+
+void ConfigView::updateListAll(void)
+{
+	ConfigView* v;
+
+	for (v = viewList; v; v = v->nextView)
+		v->list->updateListAll();
+}
+
 /*
  * Construct the complete config widget
  */
-ConfigView::ConfigView(void)
+ConfigMainWindow::ConfigMainWindow(void)
 {
+	ConfigView* view;
 	QMenuBar* menu;
 	QSplitter* split1;
 	QSplitter* split2;
+	bool ok;
+	int x, y, width, height;
+
+	QWidget *d = configApp->desktop();
+
+#if QT_VERSION >= 300
+	width = configSettings->readNumEntry("/kconfig/qconf/window width", d->width() - 64);
+	height = configSettings->readNumEntry("/kconfig/qconf/window height", d->height() - 64);
+	resize(width, height);
+	x = configSettings->readNumEntry("/kconfig/qconf/window x", 0, &ok);
+	if (ok)
+		y = configSettings->readNumEntry("/kconfig/qconf/window y", 0, &ok);
+	if (ok)
+		move(x, y);
+#else
+	width = d->width() - 64;
+	height = d->height() - 64;
+	resize(width, height);
+#endif
 
 	showDebug = false;
 
 	split1 = new QSplitter(this);
 	split1->setOrientation(QSplitter::Horizontal);
 	setCentralWidget(split1);
 
-	menuList = new ConfigList(split1, this);
+	view = new ConfigView(split1, this);
+	menuList = view->list;
 
 	split2 = new QSplitter(split1);
 	split2->setOrientation(QSplitter::Vertical);
 
 	// create config tree
-	QVBox* box = new QVBox(split2);
-	configList = new ConfigList(box, this);
-	configList->lineEdit = new ConfigLineEdit(box);
-	configList->lineEdit->hide();
-	configList->connect(configList, SIGNAL(symbolChanged(ConfigItem*)),
-			    configList, SLOT(updateList(ConfigItem*)));
-	configList->connect(configList, SIGNAL(symbolChanged(ConfigItem*)),
-			    menuList, SLOT(updateList(ConfigItem*)));
-	configList->connect(configList->lineEdit, SIGNAL(lineChanged(ConfigItem*)),
-			    SLOT(updateList(ConfigItem*)));
+	view = new ConfigView(split2, this);
+	configList = view->list;
 
 	helpText = new QTextView(split2);
 	helpText->setTextFormat(Qt::RichText);
 
 	setTabOrder(configList, helpText);
 	configList->setFocus();
 
 	menu = menuBar();
 	toolBar = new QToolBar("Tools", this);
 
 	backAction = new QAction("Back", QPixmap(xpm_back), "Back", 0, this);
 	  connect(backAction, SIGNAL(activated()), SLOT(goBack()));
 	  backAction->setEnabled(FALSE);
 	QAction *quitAction = new QAction("Quit", "&Quit", CTRL+Key_Q, this);
 	  connect(quitAction, SIGNAL(activated()), SLOT(close()));
 	QAction *loadAction = new QAction("Load", QPixmap(xpm_load), "&Load", CTRL+Key_L, this);
@@ -672,61 +752,73 @@ ConfigView::ConfigView(void)
 	  showRangeAction->setToggleAction(TRUE);
 	  showRangeAction->setOn(configList->showRange);
 	  connect(showRangeAction, SIGNAL(toggled(bool)), SLOT(setShowRange(bool)));
 	QAction *showDataAction = new QAction(NULL, "Show Data", 0, this);
 	  showDataAction->setToggleAction(TRUE);
 	  showDataAction->setOn(configList->showData);
 	  connect(showDataAction, SIGNAL(toggled(bool)), SLOT(setShowData(bool)));
 	QAction *showAllAction = new QAction(NULL, "Show All Options", 0, this);
 	  showAllAction->setToggleAction(TRUE);
 	  showAllAction->setOn(configList->showAll);
 	  connect(showAllAction, SIGNAL(toggled(bool)), SLOT(setShowAll(bool)));
 	QAction *showDebugAction = new QAction(NULL, "Show Debug Info", 0, this);
 	  showDebugAction->setToggleAction(TRUE);
 	  showDebugAction->setOn(showDebug);
 	  connect(showDebugAction, SIGNAL(toggled(bool)), SLOT(setShowDebug(bool)));
 
+	QAction *showIntroAction = new QAction(NULL, "Introduction", 0, this);
+	  connect(showIntroAction, SIGNAL(activated()), SLOT(showIntro()));
+	QAction *showAboutAction = new QAction(NULL, "About", 0, this);
+	  connect(showAboutAction, SIGNAL(activated()), SLOT(showAbout()));
+
 	// init tool bar
 	backAction->addTo(toolBar);
 	toolBar->addSeparator();
 	loadAction->addTo(toolBar);
 	saveAction->addTo(toolBar);
 	toolBar->addSeparator();
 	singleViewAction->addTo(toolBar);
 	splitViewAction->addTo(toolBar);
 	fullViewAction->addTo(toolBar);
 
 	// create config menu
 	QPopupMenu* config = new QPopupMenu(this);
 	menu->insertItem("&File", config);
 	loadAction->addTo(config);
 	saveAction->addTo(config);
 	saveAsAction->addTo(config);
 	config->insertSeparator();
 	quitAction->addTo(config);
 
 	// create options menu
 	QPopupMenu* optionMenu = new QPopupMenu(this);
 	menu->insertItem("&Option", optionMenu);
 	showNameAction->addTo(optionMenu);
 	showRangeAction->addTo(optionMenu);
 	showDataAction->addTo(optionMenu);
 	optionMenu->insertSeparator();
 	showAllAction->addTo(optionMenu);
 	showDebugAction->addTo(optionMenu);
 
+	// create help menu
+	QPopupMenu* helpMenu = new QPopupMenu(this);
+	menu->insertSeparator();
+	menu->insertItem("&Help", helpMenu);
+	showIntroAction->addTo(helpMenu);
+	showAboutAction->addTo(helpMenu);
+
 	connect(configList, SIGNAL(menuSelected(struct menu *)),
 		SLOT(changeMenu(struct menu *)));
 	connect(configList, SIGNAL(parentSelected()),
 		SLOT(goBack()));
 	connect(menuList, SIGNAL(menuSelected(struct menu *)),
 		SLOT(changeMenu(struct menu *)));
 
 	connect(configList, SIGNAL(gotFocus(void)),
 		SLOT(listFocusChanged(void)));
 	connect(menuList, SIGNAL(gotFocus(void)),
 		SLOT(listFocusChanged(void)));
 
 	//showFullView();
 	showSplitView();
 }
 
@@ -756,38 +848,38 @@ static QString print_filter(const char *str)
 			res.replace(i, 1, "<br>");
 			i += 4;
 			break;
 		}
 	}
 	return res;
 }
 
 static void expr_print_help(void *data, const char *str)
 {
 	((QString*)data)->append(print_filter(str));
 }
 
 /*
  * display a new help entry as soon as a new menu entry is selected
  */
-void ConfigView::setHelp(QListViewItem* item)
+void ConfigMainWindow::setHelp(QListViewItem* item)
 {
 	struct symbol* sym;
 	struct menu* menu;
 
-	configList->lineEdit->hide();
+	configList->parent()->lineEdit->hide();
 	if (item) {
 		QString head, debug, help;
 		menu = ((ConfigItem*)item)->menu;
 		sym = menu->sym;
 		if (sym) {
 			if (menu->prompt) {
 				head += "<big><b>";
 				head += print_filter(menu->prompt->text);
 				head += "</b></big>";
 				if (sym->name) {
 					head += " (";
 					head += print_filter(sym->name);
 					head += ")";
 				}
 			} else if (sym->name) {
 				head += "<big><b>";
@@ -844,230 +936,268 @@ void ConfigView::setHelp(QListViewItem* item)
 			head += print_filter(menu->prompt->text);
 			head += "</b></big><br><br>";
 			if (showDebug) {
 				if (menu->prompt->visible.expr) {
 					debug += "&nbsp;&nbsp;dep: ";
 					expr_print(menu->prompt->visible.expr, expr_print_help, &debug, E_NONE);
 					debug += "<br>";
 				}
 			}
 		}
 		helpText->setText(head + debug + help);
 		return;
 	}
 	helpText->setText(NULL);
 }
 
-void ConfigView::loadConfig(void)
+void ConfigMainWindow::loadConfig(void)
 {
 	QString s = QFileDialog::getOpenFileName(".config", NULL, this);
 	if (s.isNull())
 		return;
 	if (conf_read(s.latin1()))
 		QMessageBox::information(this, "qconf", "Unable to load configuration!");
+	ConfigView::updateListAll();
 }
 
-void ConfigView::saveConfig(void)
+void ConfigMainWindow::saveConfig(void)
 {
 	if (conf_write(NULL))
 		QMessageBox::information(this, "qconf", "Unable to save configuration!");
 }
 
-void ConfigView::saveConfigAs(void)
+void ConfigMainWindow::saveConfigAs(void)
 {
 	QString s = QFileDialog::getSaveFileName(".config", NULL, this);
 	if (s.isNull())
 		return;
 	if (conf_write(s.latin1()))
 		QMessageBox::information(this, "qconf", "Unable to save configuration!");
 }
 
-void ConfigView::changeMenu(struct menu *menu)
+void ConfigMainWindow::changeMenu(struct menu *menu)
 {
 	configList->setRootMenu(menu);
 	backAction->setEnabled(TRUE);
 }
 
-void ConfigView::listFocusChanged(void)
+void ConfigMainWindow::listFocusChanged(void)
 {
 	if (menuList->hasFocus()) {
 		if (menuList->mode == menuMode)
 			configList->clearSelection();
 		setHelp(menuList->selectedItem());
 	} else if (configList->hasFocus()) {
 		setHelp(configList->selectedItem());
 	}
 }
 
-void ConfigView::goBack(void)
+void ConfigMainWindow::goBack(void)
 {
 	ConfigItem* item;
 
 	configList->setParentMenu();
 	if (configList->rootEntry == &rootmenu)
 		backAction->setEnabled(FALSE);
 	item = (ConfigItem*)menuList->selectedItem();
 	while (item) {
 		if (item->menu == configList->rootEntry) {
 			menuList->setSelected(item, TRUE);
 			break;
 		}
 		item = (ConfigItem*)item->parent();
 	}
 }
 
-void ConfigView::showSingleView(void)
+void ConfigMainWindow::showSingleView(void)
 {
 	menuList->hide();
 	menuList->setRootMenu(0);
 	configList->mode = singleMode;
 	if (configList->rootEntry == &rootmenu)
 		configList->updateListAll();
 	else
 		configList->setRootMenu(&rootmenu);
 	configList->setAllOpen(TRUE);
 	configList->setFocus();
 }
 
-void ConfigView::showSplitView(void)
+void ConfigMainWindow::showSplitView(void)
 {
 	configList->mode = symbolMode;
 	if (configList->rootEntry == &rootmenu)
 		configList->updateListAll();
 	else
 		configList->setRootMenu(&rootmenu);
 	configList->setAllOpen(TRUE);
 	configApp->processEvents();
 	menuList->mode = menuMode;
 	menuList->setRootMenu(&rootmenu);
 	menuList->show();
 	menuList->setAllOpen(TRUE);
 	menuList->setFocus();
 }
 
-void ConfigView::showFullView(void)
+void ConfigMainWindow::showFullView(void)
 {
 	menuList->hide();
 	menuList->setRootMenu(0);
 	configList->mode = fullMode;
 	if (configList->rootEntry == &rootmenu)
 		configList->updateListAll();
 	else
 		configList->setRootMenu(&rootmenu);
 	configList->setAllOpen(FALSE);
 	configList->setFocus();
 }
 
-void ConfigView::setShowAll(bool b)
+void ConfigMainWindow::setShowAll(bool b)
 {
 	if (configList->showAll == b)
 		return;
 	configList->showAll = b;
 	configList->updateListAll();
 	menuList->showAll = b;
 	menuList->updateListAll();
 }
 
-void ConfigView::setShowDebug(bool b)
+void ConfigMainWindow::setShowDebug(bool b)
 {
 	if (showDebug == b)
 		return;
 	showDebug = b;
 }
 
-void ConfigView::setShowName(bool b)
+void ConfigMainWindow::setShowName(bool b)
 {
 	if (configList->showName == b)
 		return;
 	configList->showName = b;
 	configList->reinit();
 }
 
-void ConfigView::setShowRange(bool b)
+void ConfigMainWindow::setShowRange(bool b)
 {
 	if (configList->showRange == b)
 		return;
 	configList->showRange = b;
 	configList->reinit();
 }
 
-void ConfigView::setShowData(bool b)
+void ConfigMainWindow::setShowData(bool b)
 {
 	if (configList->showData == b)
 		return;
 	configList->showData = b;
 	configList->reinit();
 }
 
 /*
  * ask for saving configuration before quitting
  * TODO ask only when something changed
  */
-void ConfigView::closeEvent(QCloseEvent* e)
+void ConfigMainWindow::closeEvent(QCloseEvent* e)
 {
 	if (!sym_change_count) {
 		e->accept();
 		return;
 	}
 	QMessageBox mb("qconf", "Save configuration?", QMessageBox::Warning,
 			QMessageBox::Yes | QMessageBox::Default, QMessageBox::No, QMessageBox::Cancel | QMessageBox::Escape);
 	mb.setButtonText(QMessageBox::Yes, "&Save Changes");
 	mb.setButtonText(QMessageBox::No, "&Discard Changes");
 	mb.setButtonText(QMessageBox::Cancel, "Cancel Exit");
 	switch (mb.exec()) {
 	case QMessageBox::Yes:
 		conf_write(NULL);
 	case QMessageBox::No:
 		e->accept();
 		break;
 	case QMessageBox::Cancel:
 		e->ignore();
 		break;
 	}
 }
 
+void ConfigMainWindow::showIntro(void)
+{
+	static char str[] = "Welcome to the qconf graphical kernel configuration tool for Linux.\n\n"
+		"For each option, a blank box indicates the feature is disabled, a check\n"
+		"indicates it is enabled, and a dot indicates that it is to be compiled\n"
+		"as a module.  Clicking on the box will cycle through the three states.\n\n"
+		"If you do not see an option (e.g., a device driver) that you believe\n"
+		"should be present, try turning on Show All Options under the Options menu.\n"
+		"Although there is no cross reference yet to help you figure out what other\n"
+		"options must be enabled to support the option you are interested in, you can\n"
+		"still view the help of a grayed-out option.\n\n"
+		"Toggling Show Debug Info under the Options menu will show the dependencies,\n"
+		"which you can then match by examining other options.\n\n";
+
+	QMessageBox::information(this, "qconf", str);
+}
+
+void ConfigMainWindow::showAbout(void)
+{
+	static char str[] = "qconf is Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>.\n\n"
+		"Bug reports and feature request can also be entered at http://bugzilla.kernel.org/\n";
+
+	QMessageBox::information(this, "qconf", str);
+}
+
 void fixup_rootmenu(struct menu *menu)
 {
 	struct menu *child;
 
 	if (!menu->prompt || menu->prompt->type != P_MENU)
 		return;
 	menu->prompt->type = P_ROOTMENU;
 	for (child = menu->list; child; child = child->next)
 		fixup_rootmenu(child);
 }
 
 int main(int ac, char** av)
 {
-	ConfigView* v;
+	ConfigMainWindow* v;
 	const char *name;
 
 #ifndef LKC_DIRECT_LINK
 	kconfig_load();
 #endif
 
 	configApp = new QApplication(ac, av);
+#if QT_VERSION >= 300
+	configSettings = new QSettings;
+#endif
 	if (ac > 1 && av[1][0] == '-') {
 		switch (av[1][1]) {
 		case 'a':
 			//showAll = 1;
 			break;
 		case 'h':
 		case '?':
 			printf("%s <config>\n", av[0]);
 			exit(0);
 		}
 		name = av[2];
 	} else
 		name = av[1];
 	conf_parse(name);
 	fixup_rootmenu(&rootmenu);
 	conf_read(NULL);
 	//zconfdump(stdout);
-	v = new ConfigView();
+
+	v = new ConfigMainWindow();
 
 	//zconfdump(stdout);
 	v->show();
 	configApp->connect(configApp, SIGNAL(lastWindowClosed()), SLOT(quit()));
 	configApp->exec();
+
+#if QT_VERSION >= 300
+	configSettings->writeEntry("/kconfig/qconf/window x", v->pos().x());
+	configSettings->writeEntry("/kconfig/qconf/window y", v->pos().y());
+	configSettings->writeEntry("/kconfig/qconf/window width", v->size().width());
+	configSettings->writeEntry("/kconfig/qconf/window height", v->size().height());
+	delete configSettings;
+#endif
 	return 0;
 }
diff --git a/scripts/kconfig/qconf.h b/scripts/kconfig/qconf.h
index f8f3669..6f096b4 100644
--- a/scripts/kconfig/qconf.h
+++ b/scripts/kconfig/qconf.h
@@ -1,62 +1,82 @@
 /*
  * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
  * Released under the terms of the GNU GPL v2.0.
  */
 
 #include <qlistview.h>
 
-class ConfigLineEdit;
+class ConfigList;
 class ConfigItem;
-class ConfigView;
+class ConfigLineEdit;
+class ConfigMainWindow;
+
+class ConfigView : public QVBox {
+	Q_OBJECT
+	typedef class QVBox Parent;
+public:
+	ConfigView(QWidget* parent, ConfigMainWindow* cview);
+	~ConfigView(void);
+	static void updateList(ConfigItem* item);
+	static void updateListAll(void);
+
+public:
+	ConfigList* list;
+	ConfigLineEdit* lineEdit;
+
+	static ConfigView* viewList;
+	ConfigView* nextView;
+};
 
 enum colIdx {
 	promptColIdx, nameColIdx, noColIdx, modColIdx, yesColIdx, dataColIdx, colNr
 };
 enum listMode {
 	singleMode, menuMode, symbolMode, fullMode
 };
 
 class ConfigList : public QListView {
 	Q_OBJECT
 	typedef class QListView Parent;
 public:
-	ConfigList(QWidget* p, ConfigView* cview);
+	ConfigList(ConfigView* p, ConfigMainWindow* cview);
 	void reinit(void);
+	ConfigView* parent(void) const
+	{
+		return (ConfigView*)Parent::parent();
+	}
 
-	ConfigLineEdit* lineEdit;
 protected:
-	ConfigView* cview;
+	ConfigMainWindow* cview;
 
 	void keyPressEvent(QKeyEvent *e);
 	void contentsMousePressEvent(QMouseEvent *e);
 	void contentsMouseReleaseEvent(QMouseEvent *e);
 	void contentsMouseMoveEvent(QMouseEvent *e);
 	void contentsMouseDoubleClickEvent(QMouseEvent *e);
 	void focusInEvent(QFocusEvent *e);
 public slots:
 	void setRootMenu(struct menu *menu);
 
 	void updateList(ConfigItem *item);
 	void setValue(ConfigItem* item, tristate val);
 	void changeValue(ConfigItem* item);
 	void updateSelection(void);
 signals:
 	void menuSelected(struct menu *menu);
 	void parentSelected(void);
-	void symbolChanged(ConfigItem* item);
 	void gotFocus(void);
 
 public:
 	void updateListAll(void)
 	{
 		updateAll = true;
 		updateList(NULL);
 		updateAll = false;
 	}
 	ConfigList* listView()
 	{
 		return this;
 	}
 	ConfigItem* firstChild() const
 	{
 		return (ConfigItem *)Parent::firstChild();
@@ -87,115 +107,120 @@ public:
 	QPixmap choiceYesPix, choiceNoPix, menuPix, menuInvPix;
 
 	bool showAll, showName, showRange, showData;
 	enum listMode mode;
 	struct menu *rootEntry;
 	QColorGroup disabledColorGroup;
 	QColorGroup inactivedColorGroup;
 
 private:
 	int colMap[colNr];
 	int colRevMap[colNr];
 };
 
 class ConfigItem : public QListViewItem {
 	typedef class QListViewItem Parent;
 public:
-	ConfigItem(QListView *parent, ConfigItem *after, struct menu *m)
-	: Parent(parent, after), menu(m)
+	ConfigItem(QListView *parent, ConfigItem *after, struct menu *m, bool v)
+	: Parent(parent, after), menu(m), visible(v)
 	{
 		init();
 	}
-	ConfigItem(ConfigItem *parent, ConfigItem *after, struct menu *m)
-	: Parent(parent, after), menu(m)
+	ConfigItem(ConfigItem *parent, ConfigItem *after, struct menu *m, bool v)
+	: Parent(parent, after), menu(m), visible(v)
 	{
 		init();
 	}
 	~ConfigItem(void);
 	void init(void);
 #if QT_VERSION >= 300
 	void okRename(int col);
 #endif
 	void updateMenu(void);
+	bool updateNeeded(void);
 	ConfigList* listView() const
 	{
 		return (ConfigList*)Parent::listView();
 	}
 	ConfigItem* firstChild() const
 	{
 		return (ConfigItem *)Parent::firstChild();
 	}
 	ConfigItem* nextSibling() const
 	{
 		return (ConfigItem *)Parent::nextSibling();
 	}
 	void setText(colIdx idx, const QString& text)
 	{
 		Parent::setText(listView()->mapIdx(idx), text);
 	}
 	QString text(colIdx idx) const
 	{
 		return Parent::text(listView()->mapIdx(idx));
 	}
 	void setPixmap(colIdx idx, const QPixmap& pm)
 	{
 		Parent::setPixmap(listView()->mapIdx(idx), pm);
 	}
 	const QPixmap* pixmap(colIdx idx) const
 	{
 		return Parent::pixmap(listView()->mapIdx(idx));
 	}
 	void paintCell(QPainter* p, const QColorGroup& cg, int column, int width, int align);
 
+	ConfigItem* nextItem;
 	struct menu *menu;
 	bool visible;
-	bool doInit;
 };
 
 class ConfigLineEdit : public QLineEdit {
 	Q_OBJECT
 	typedef class QLineEdit Parent;
 public:
-	ConfigLineEdit(QWidget * parent)
-	: QLineEdit(parent)
+	ConfigLineEdit(ConfigView* parent)
+	: Parent(parent)
 	{ }
+	ConfigView* parent(void) const
+	{
+		return (ConfigView*)Parent::parent();
+	}
 	void show(ConfigItem *i);
 	void keyPressEvent(QKeyEvent *e);
-signals:
-	void lineChanged(ConfigItem *item);
 
 public:
 	ConfigItem *item;
 };
 
-class ConfigView : public QMainWindow {
+class ConfigMainWindow : public QMainWindow {
 	Q_OBJECT
 public:
-	ConfigView(void);
+	ConfigMainWindow(void);
 public slots:
 	void setHelp(QListViewItem* item);
 	void changeMenu(struct menu *);
 	void listFocusChanged(void);
 	void goBack(void);
 	void loadConfig(void);
 	void saveConfig(void);
 	void saveConfigAs(void);
 	void showSingleView(void);
 	void showSplitView(void);
 	void showFullView(void);
 	void setShowAll(bool);
 	void setShowDebug(bool);
 	void setShowRange(bool);
 	void setShowName(bool);
 	void setShowData(bool);
+	void showIntro(void);
+	void showAbout(void);
 
 protected:
 	void closeEvent(QCloseEvent *e);
 
 	ConfigList *menuList;
 	ConfigList *configList;
 	QTextView *helpText;
 	QToolBar *toolBar;
 	QAction *backAction;
 
 	bool showDebug;
 };
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index 59c88d2..845d8a3 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -136,33 +136,33 @@ struct property *sym_get_default_prop(struct symbol *sym)
 	}
 	return NULL;
 }
 
 void sym_calc_visibility(struct symbol *sym)
 {
 	struct property *prop;
 	tristate visible, oldvisible;
 
 	/* any prompt visible? */
 	oldvisible = sym->visible;
 	visible = no;
 	for_all_prompts(sym, prop)
 		visible = E_OR(visible, E_CALC(prop->visible));
 	if (oldvisible != visible) {
 		sym->visible = visible;
-		sym->flags |= SYMBOL_CHANGED;
+		sym_set_changed(sym);
 	}
 }
 
 void sym_calc_value(struct symbol *sym)
 {
 	struct symbol_value newval, oldval;
 	struct property *prop, *def_prop;
 	struct symbol *def_sym;
 	struct expr *e;
 
 	if (sym->flags & SYMBOL_VALID)
 		return;
 
 	oldval = sym->curr;
 
 	switch (sym->type) {
@@ -191,33 +191,34 @@ void sym_calc_value(struct symbol *sym)
 		sym->flags &= ~SYMBOL_WRITE;
 
 	sym_calc_visibility(sym);
 
 	/* set default if recursively called */
 	sym->curr = newval;
 
 	if (sym->visible != no) {
 		sym->flags |= SYMBOL_WRITE;
 		if (!sym_has_value(sym)) {
 			if (!sym_is_choice(sym)) {
 				prop = sym_get_default_prop(sym);
 				if (prop) {
 					sym_calc_value(prop->def);
 					newval = prop->def->curr;
 				}
-			}
+			} else
+				S_TRI(newval) = S_TRI(sym->def);
 		} else
 			newval = sym->def;
 
 		S_TRI(newval) = E_AND(S_TRI(newval), sym->visible);
 		/* if the symbol is visible and not optionial,
 		 * possibly ignore old user choice. */
 		if (!sym_is_optional(sym) && S_TRI(newval) == no)
 			S_TRI(newval) = sym->visible;
 		if (sym_is_choice_value(sym) && sym->visible == yes) {
 			prop = sym_get_choice_prop(sym);
 			S_TRI(newval) = (S_VAL(prop->def->curr) == sym) ? yes : no;
 		}
 	} else {
 		prop = sym_get_default_prop(sym);
 		if (prop) {
 			sym->flags |= SYMBOL_WRITE;
@@ -263,60 +264,74 @@ out:
 
 		if (!def_sym) {
 			prop = sym_get_choice_prop(sym);
 			for (e = prop->dep; e; e = e->left.expr) {
 				sym_calc_visibility(e->right.sym);
 				if (e->right.sym->visible != no) {
 					def_sym = e->right.sym;
 					break;
 				}
 			}
 		}
 
 		S_VAL(newval) = def_sym;
 	}
 
 	if (memcmp(&oldval, &newval, sizeof(newval)))
-		sym->flags |= SYMBOL_CHANGED;
+		sym_set_changed(sym);
 	sym->curr = newval;
 
 	if (sym_is_choice(sym)) {
 		int flags = sym->flags & (SYMBOL_CHANGED | SYMBOL_WRITE);
 		prop = sym_get_choice_prop(sym);
-		for (e = prop->dep; e; e = e->left.expr)
+		for (e = prop->dep; e; e = e->left.expr) {
 			e->right.sym->flags |= flags;
+			if (flags & SYMBOL_CHANGED)
+				sym_set_changed(e->right.sym);
+		}
 	}
 }
 
 void sym_clear_all_valid(void)
 {
 	struct symbol *sym;
 	int i;
 
 	for_all_symbols(i, sym)
 		sym->flags &= ~SYMBOL_VALID;
 	sym_change_count++;
 }
 
+void sym_set_changed(struct symbol *sym)
+{
+	struct property *prop;
+
+	sym->flags |= SYMBOL_CHANGED;
+	for (prop = sym->prop; prop; prop = prop->next) {
+		if (prop->menu)
+			prop->menu->flags |= MENU_CHANGED;
+	}
+}
+
 void sym_set_all_changed(void)
 {
 	struct symbol *sym;
 	int i;
 
 	for_all_symbols(i, sym)
-		sym->flags |= SYMBOL_CHANGED;
+		sym_set_changed(sym);
 }
 
 bool sym_tristate_within_range(struct symbol *sym, tristate val)
 {
 	int type = sym_get_type(sym);
 
 	if (sym->visible == no)
 		return false;
 
 	if (type != S_BOOLEAN && type != S_TRISTATE)
 		return false;
 
 	switch (val) {
 	case no:
 		if (sym_is_choice_value(sym) && sym->visible == yes)
 			return false;
@@ -327,33 +342,33 @@ bool sym_tristate_within_range(struct symbol *sym, tristate val)
 		return type == S_TRISTATE;
 	case yes:
 		return type == S_BOOLEAN || sym->visible == yes;
 	}
 	return false;
 }
 
 bool sym_set_tristate_value(struct symbol *sym, tristate val)
 {
 	tristate oldval = sym_get_tristate_value(sym);
 
 	if (oldval != val && !sym_tristate_within_range(sym, val))
 		return false;
 
 	if (sym->flags & SYMBOL_NEW) {
 		sym->flags &= ~SYMBOL_NEW;
-		sym->flags |= SYMBOL_CHANGED;
+		sym_set_changed(sym);
 	}
 	if (sym_is_choice_value(sym) && val == yes) {
 		struct property *prop = sym_get_choice_prop(sym);
 
 		S_VAL(prop->def->def) = sym;
 		prop->def->flags &= ~SYMBOL_NEW;
 	}
 
 	S_TRI(sym->def) = val;
 	if (oldval != val) {
 		sym_clear_all_valid();
 		if (sym == modules_sym)
 			sym_set_all_changed();
 	}
 
 	return true;
@@ -447,33 +462,33 @@ bool sym_set_string_value(struct symbol *sym, const char *newval)
 		case 'M':
 			return sym_set_tristate_value(sym, mod);
 		case 'n':
 		case 'N':
 			return sym_set_tristate_value(sym, no);
 		}
 		return false;
 	default:
 		;
 	}
 
 	if (!sym_string_valid(sym, newval))
 		return false;
 
 	if (sym->flags & SYMBOL_NEW) {
 		sym->flags &= ~SYMBOL_NEW;
-		sym->flags |= SYMBOL_CHANGED;
+		sym_set_changed(sym);
 	}
 
 	oldval = S_VAL(sym->def);
 	size = strlen(newval) + 1;
 	if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) {
 		size += 2;
 		S_VAL(sym->def) = val = malloc(size);
 		*val++ = '0';
 		*val++ = 'x';
 	} else if (!oldval || strcmp(oldval, newval))
 		S_VAL(sym->def) = val = malloc(size);
 	else
 		return true;
 
 	strcpy(val, newval);
 	free((void *)oldval);
@@ -512,72 +527,68 @@ bool sym_is_changable(struct symbol *sym)
 	/* at least 'n' and 'y'/'m' is selectable */
 	if (sym_is_optional(sym))
 		return true;
 	/* no 'n', so 'y' and 'm' must be selectable */
 	if (sym_get_type(sym) == S_TRISTATE && sym->visible == yes)
 		return true;
 	return false;
 }
 
 struct symbol *sym_lookup(const char *name, int isconst)
 {
 	struct symbol *symbol;
 	const char *ptr;
 	char *new_name;
 	int hash = 0;
 
-	//printf("lookup: %s -> ", name);
 	if (name) {
 		if (name[0] && !name[1]) {
 			switch (name[0]) {
 			case 'y': return &symbol_yes;
 			case 'm': return &symbol_mod;
 			case 'n': return &symbol_no;
 			}
 		}
 		for (ptr = name; *ptr; ptr++)
 			hash += *ptr;
 		hash &= 0xff;
 
 		for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
 			if (!strcmp(symbol->name, name)) {
 				if ((isconst && symbol->flags & SYMBOL_CONST) ||
-				    (!isconst && !(symbol->flags & SYMBOL_CONST))) {
-					//printf("h:%p\n", symbol);
+				    (!isconst && !(symbol->flags & SYMBOL_CONST)))
 					return symbol;
-				}
 			}
 		}
 		new_name = strdup(name);
 	} else {
 		new_name = NULL;
 		hash = 256;
 	}
 
 	symbol = malloc(sizeof(*symbol));
 	memset(symbol, 0, sizeof(*symbol));
 	symbol->name = new_name;
 	symbol->type = S_UNKNOWN;
 	symbol->flags = SYMBOL_NEW;
 	if (isconst)
 		symbol->flags |= SYMBOL_CONST;
 
 	symbol->next = symbol_hash[hash];
 	symbol_hash[hash] = symbol;
 
-	//printf("n:%p\n", symbol);
 	return symbol;
 }
 
 struct symbol *sym_find(const char *name)
 {
 	struct symbol *symbol = NULL;
 	const char *ptr;
 	int hash = 0;
 
 	if (!name)
 		return NULL;
 
 	if (name[0] && !name[1]) {
 		switch (name[0]) {
 		case 'y': return &symbol_yes;
 		case 'm': return &symbol_mod;
diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l
index 6d81e5e..1471630 100644
--- a/scripts/kconfig/zconf.l
+++ b/scripts/kconfig/zconf.l
@@ -1,33 +1,33 @@
-%option backup nostdinit noyywrap full ecs
+%option backup nostdinit noyywrap never-interactive full ecs
 %option 8bit backup nodefault perf-report perf-report
 %x COMMAND HELP STRING PARAM
 %{
 /*
  * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
  * Released under the terms of the GNU GPL v2.0.
  */
 
+#include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 
 #define LKC_DIRECT_LINK
 #include "lkc.h"
-#include "zconf.tab.h"
 
 #define START_STRSIZE	16
 
 char *text;
 static char *text_ptr;
 static int text_size, text_asize;
 
 struct buffer {
         struct buffer *parent;
         YY_BUFFER_STATE state;
 };
 
 struct buffer *current_buf;
 
 static int last_ts, first_ts;
 
@@ -70,34 +70,32 @@ n	[A-Za-z0-9_]
 
 %%
 	int str = 0;
 	int ts, i;
 
 [ \t]*#.*\n	current_file->lineno++;
 [ \t]*#.*
 
 [ \t]*\n	current_file->lineno++; return T_EOL;
 
 [ \t]+	{
 	BEGIN(COMMAND);
 }
 
 .	{
 	unput(yytext[0]);
-	//printf("new config: ");
-	//symbol_end(NULL);
 	BEGIN(COMMAND);
 }
 
 
 <COMMAND>{
 	"mainmenu"		BEGIN(PARAM); return T_MAINMENU;
 	"menu"			BEGIN(PARAM); return T_MENU;
 	"endmenu"		BEGIN(PARAM); return T_ENDMENU;
 	"source"		BEGIN(PARAM); return T_SOURCE;
 	"choice"		BEGIN(PARAM); return T_CHOICE;
 	"endchoice"		BEGIN(PARAM); return T_ENDCHOICE;
 	"comment"		BEGIN(PARAM); return T_COMMENT;
 	"config"		BEGIN(PARAM); return T_CONFIG;
 	"help"			BEGIN(PARAM); return T_HELP;
 	"if"			BEGIN(PARAM); return T_IF;
 	"endif"			BEGIN(PARAM); return T_ENDIF;
@@ -130,58 +128,72 @@ n	[A-Za-z0-9_]
 	"="	return T_EQUAL;
 	"!="	return T_UNEQUAL;
 	"if"	return T_IF;
 	"on"	return T_ON;
 	\"|\'	{
 		str = yytext[0];
 		new_string();
 		BEGIN(STRING);
 	}
 	\n	BEGIN(INITIAL); current_file->lineno++; return T_EOL;
 	---	/* ignore */
 	({n}|[-/.])+	{
 		alloc_string(yytext, yyleng);
 		zconflval.string = text;
 		return T_WORD;
 	}
+	\\\n	current_file->lineno++;
 	.
+	<<EOF>> {
+		BEGIN(INITIAL);
+	}
 }
 
 <STRING>{
-	[^'"\n\\]+	{
+	[^'"\\\n]+/\n	{
+		append_string(yytext, yyleng);
+		zconflval.string = text;
+		return T_STRING;
+	}
+	[^'"\\\n]+	{
 		append_string(yytext, yyleng);
 	}
+	\\.?/\n	{
+		append_string(yytext + 1, yyleng - 1);
+		zconflval.string = text;
+		return T_STRING;
+	}
+	\\.?	{
+		append_string(yytext + 1, yyleng - 1);
+	}
 	\'|\"	{
 		if (str == yytext[0]) {
 			BEGIN(PARAM);
 			zconflval.string = text;
-			//printf("s:%s\n", text);
 			return T_STRING;
 		} else
 			append_string(yytext, 1);
 	}
-	\\[ \t]*\n	append_string(yytext+yyleng-1, 1); current_file->lineno++;
-	\\[ \t]*	append_string(yytext+1, yyleng-1);
-	\\.		append_string(yytext+1, 1);
 	\n	{
-		//printf(":%d: open string!\n", current_file->lineno+1);
-		exit(0);
+		printf("%s:%d:warning: multi-line strings not supported\n", zconf_curname(), zconf_lineno());
+		current_file->lineno++;
+		BEGIN(INITIAL);
+		return T_EOL;
 	}
 	<<EOF>>	{
-		//printf(":%d: open string!\n", current_file->lineno+1);
-		exit(0);
+		BEGIN(INITIAL);
 	}
 }
 
 <HELP>{
 	[ \t]+	{
 		ts = 0;
 		for (i = 0; i < yyleng; i++) {
 			if (yytext[i] == '\t')
 				ts = (ts & ~7) + 8;
 			else
 				ts++;
 		}
 		last_ts = ts;
 		if (first_ts) {
 			if (ts < first_ts) {
 				zconf_endhelp();
@@ -208,108 +220,132 @@ n	[A-Za-z0-9_]
 	[^ \t\n].* {
 		append_string(yytext, yyleng);
 		if (!first_ts)
 			first_ts = last_ts;
 	}
 	<<EOF>>	{
 		zconf_endhelp();
 		return T_HELPTEXT;
 	}
 }
 
 <<EOF>>	{
 	if (current_buf) {
 		zconf_endfile();
 		return T_EOF;
 	}
+	fclose(yyin);
 	yyterminate();
 }
 
 %%
 void zconf_starthelp(void)
 {
 	new_string();
 	last_ts = first_ts = 0;
 	BEGIN(HELP);
 }
 
 static void zconf_endhelp(void)
 {
 	zconflval.string = text;
 	BEGIN(INITIAL); 
 }
 
+
+/* 
+ * Try to open specified file with following names:
+ * ./name
+ * $(srctree)/name
+ * The latter is used when srctree is separate from objtree
+ * when compiling the kernel.
+ * Return NULL if file is not found.
+ */
+FILE *zconf_fopen(const char *name)
+{
+	char *env, fullname[PATH_MAX+1];
+	FILE *f;
+
+	f = fopen(name, "r");
+	if (!f && name[0] != '/') {
+		env = getenv(SRCTREE);
+		if (env) {
+			sprintf(fullname, "%s/%s", env, name);
+			f = fopen(fullname, "r");
+		}
+	}
+	return f;
+}
+
 void zconf_initscan(const char *name)
 {
-	yyin = fopen(name, "r");
+	yyin = zconf_fopen(name);
 	if (!yyin) {
 		printf("can't find file %s\n", name);
 		exit(1);
 	}
-	//fprintf(stderr, "zconf_initscan: %s\n", name);
 
 	current_buf = malloc(sizeof(*current_buf));
 	memset(current_buf, 0, sizeof(*current_buf));
 
 	current_file = file_lookup(name);
 	current_file->lineno = 1;
 	current_file->flags = FILE_BUSY;
 }
 
 void zconf_nextfile(const char *name)
 {
 	struct file *file = file_lookup(name);
 	struct buffer *buf = malloc(sizeof(*buf));
 	memset(buf, 0, sizeof(*buf));
 
 	current_buf->state = YY_CURRENT_BUFFER;
-	yyin = fopen(name, "r");
+	yyin = zconf_fopen(name);
 	if (!yyin) {
 		printf("%s:%d: can't open file \"%s\"\n", zconf_curname(), zconf_lineno(), name);
 		exit(1);
 	}
 	yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
 	buf->parent = current_buf;
 	current_buf = buf;
 
-	//fprintf(stderr, "zconf_nextfile: %s\n", name);
-
 	if (file->flags & FILE_BUSY) {
 		printf("recursive scan (%s)?\n", name);
 		exit(1);
 	}
 	if (file->flags & FILE_SCANNED) {
 		printf("file %s already scanned?\n", name);
 		exit(1);
 	}
 	file->flags |= FILE_BUSY;
 	file->lineno = 1;
 	file->parent = current_file;
 	current_file = file;
 }
 
 static struct buffer *zconf_endfile(void)
 {
 	struct buffer *parent;
 
 	current_file->flags |= FILE_SCANNED;
 	current_file->flags &= ~FILE_BUSY;
 	current_file = current_file->parent;
 
 	parent = current_buf->parent;
 	if (parent) {
+		fclose(yyin);
 		yy_delete_buffer(YY_CURRENT_BUFFER);
 		yy_switch_to_buffer(parent->state);
 	}
 	free(current_buf);
 	current_buf = parent;
 
 	return parent;
 }
 
 int zconf_lineno(void)
 {
 	if (current_buf)
 		return current_file->lineno;
 	else
 		return 0;
 }
diff --git a/scripts/kconfig/zconf.y b/scripts/kconfig/zconf.y
index c3f1bd0..996b10a 100644
--- a/scripts/kconfig/zconf.y
+++ b/scripts/kconfig/zconf.y
@@ -214,51 +214,49 @@ choice_option_list:
 	| choice_option_list help
 	| choice_option_list T_EOL
 ;
 
 choice_option: T_PROMPT prompt if_expr
 {
 	menu_add_prop(P_PROMPT, $2, NULL, $3);
 	printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
 };
 
 choice_option: T_OPTIONAL
 {
 	current_entry->sym->flags |= SYMBOL_OPTIONAL;
 	printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno());
 };
 
-choice_option: T_DEFAULT symbol
+choice_option: T_DEFAULT symbol if_expr
 {
-	menu_add_prop(P_DEFAULT, NULL, $2, NULL);
-	//current_choice->prop->def = $2;
+	menu_add_prop(P_DEFAULT, NULL, $2, $3);
 	printd(DEBUG_PARSE, "%s:%d:default\n", zconf_curname(), zconf_lineno());
 };
 
 choice_block:
 	  /* empty */
 	| choice_block common_block
 ;
 
 /* if entry */
 
 if: T_IF expr
 {
 	printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno());
 	menu_add_entry(NULL);
-	//current_entry->prompt = menu_add_prop(T_IF, NULL, NULL, $2);
 	menu_add_dep($2);
 	menu_end_entry();
 	menu_add_menu();
 };
 
 if_end: end
 {
 	if (zconf_endtoken($1, T_IF, T_ENDIF)) {
 		menu_end_menu();
 		printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
 	}
 };
 
 if_stmt:
 	  if T_EOL if_block if_end T_EOL
 	| if T_EOL if_block