kconfig: Update kconfig. Sync with Linux-4.2

This change updates the kconfig utility to what is shipped with 4.2.0.

Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>

29 files changed, 2114 insertions, 1087 deletions

diff --git a/kconfig/.gitignore b/kconfig/.gitignore
index 497ea88d..7ee94196 100644
--- a/kconfig/.gitignore
+++ b/kconfig/.gitignore
@@ -2,7 +2,6 @@ conf
 ?conf
 **.o
 **.dep
-lex.backup
-lex.zconf.c
+zconf.lex.c
 zconf.hash.c
 zconf.tab.c
diff --git a/kconfig/Makefile b/kconfig/Makefile
index 3474e5c6..b18ddc0a 100644
--- a/kconfig/Makefile
+++ b/kconfig/Makefile
@@ -11,7 +11,7 @@ LDFLAGS =
 
 # Compiler flags to use gettext
 ifeq ($(gettext),)
-INTL_CFLAGS = -DKBUILD_NO_NLS
+INTL_CFLAGS = -Wno-format-security -DKBUILD_NO_NLS
 endif
 
 # Compiler and linker flags to use ncurses
@@ -74,8 +74,8 @@ DEPS += $(nconf_DEP)
 	@$(CC) $(CFLAGS) $(EXTRA_CFLAGS) -MM $< |$(sed) -r -e 's|([^:]+.o)( *:+)|$(<:.c=.o) $@\2|;' >$@
 
 # Generate the grammar parser
-zconf.tab.o: zconf.tab.c zconf.hash.c lex.zconf.c
-zconf.tab.dep: zconf.tab.c zconf.hash.c lex.zconf.c
+zconf.tab.o: zconf.tab.c zconf.hash.c zconf.lex.c
+zconf.tab.dep: zconf.tab.c zconf.hash.c zconf.lex.c
 
 .PRECIOUS: zconf.tab.c
 zconf.tab.c: zconf.y
@@ -84,9 +84,9 @@ zconf.tab.c: zconf.y
 
 zconf.hash.c: zconf.gperf
 	@echo "  GPERF  '$@'"
-	@$(gperf) < $< > $@
+	@$(gperf) -C < $< > $@
 
-lex.zconf.c: zconf.l
+zconf.lex.c: zconf.l
 	@echo "  LEX    '$@'"
 	@flex -L -Pzconf -o$@ $<
 
@@ -114,4 +114,4 @@ conf: $(COMMON_OBJ) $(conf_OBJ)
 clean:
 	@echo "  RM     'kconfig'"
 	@rm -f conf mconf nconf $(ALL_OBJS) $(ALL_DEPS)
-	@rm -f rm -f zconf.tab.c zconf.hash.c lex.zconf.c lex.backup
+	@rm -f rm -f zconf.tab.c zconf.hash.c zconf.lex.c lex.backup
diff --git a/kconfig/check.sh b/kconfig/check.sh
index fa59cbf9..55b79ba1 100644
--- a/kconfig/check.sh
+++ b/kconfig/check.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 # Needed for systems without gettext
-$* -xc -o /dev/null - > /dev/null 2>&1 << EOF
+$* -x c -o /dev/null - > /dev/null 2>&1 << EOF
 #include <libintl.h>
 int main()
 {
@@ -11,4 +11,3 @@ EOF
 if [ ! "$?" -eq "0"  ]; then
 	echo -DKBUILD_NO_NLS;
 fi
-
diff --git a/kconfig/conf.c b/kconfig/conf.c
index 0a2227ed..f7a50c14 100644
--- a/kconfig/conf.c
+++ b/kconfig/conf.c
@@ -13,12 +13,13 @@
 #include <getopt.h>
 #include <sys/stat.h>
 #include <sys/time.h>
+#include <errno.h>
 
-#define LKC_DIRECT_LINK
 #include "lkc.h"
 
 static void conf(struct menu *menu);
 static void check_conf(struct menu *menu);
+static void xfgets(char *str, int size, FILE *in);
 
 enum input_mode {
 	oldaskconfig,
@@ -32,12 +33,11 @@ enum input_mode {
 	defconfig,
 	savedefconfig,
 	listnewconfig,
-	oldnoconfig,
+	olddefconfig,
 } input_mode = oldaskconfig;
 
-char *defconfig_file;
-
 static int indent = 1;
+static int tty_stdio;
 static int valid_stdin = 1;
 static int sync_kconfig;
 static int conf_cnt;
@@ -106,9 +106,12 @@ static int conf_askvalue(struct symbol *sym, const char *def)
 			return 0;
 		}
 		check_stdin();
+		/* fall through */
 	case oldaskconfig:
 		fflush(stdout);
 		xfgets(line, 128, stdin);
+		if (!tty_stdio)
+			printf("\n");
 		return 1;
 	default:
 		break;
@@ -150,6 +153,7 @@ static int conf_string(struct menu *menu)
 				def = NULL;
 				break;
 			}
+			/* fall through */
 		default:
 			line[strlen(line)-1] = 0;
 			def = line;
@@ -304,6 +308,7 @@ static int conf_choice(struct menu *menu)
 				break;
 			}
 			check_stdin();
+			/* fall through */
 		case oldaskconfig:
 			fflush(stdout);
 			xfgets(line, 128, stdin);
@@ -364,11 +369,12 @@ static void conf(struct menu *menu)
 		case P_MENU:
 			if ((input_mode == silentoldconfig ||
 			     input_mode == listnewconfig ||
-			     input_mode == oldnoconfig) &&
+			     input_mode == olddefconfig) &&
 			    rootEntry != menu) {
 				check_conf(menu);
 				return;
 			}
+			/* fall through */
 		case P_COMMENT:
 			prompt = menu_get_prompt(menu);
 			if (prompt)
@@ -427,7 +433,7 @@ static void check_conf(struct menu *menu)
 				if (sym->name && !sym_is_choice_value(sym)) {
 					printf("%s%s\n", CONFIG_, sym->name);
 				}
-			} else if (input_mode != oldnoconfig) {
+			} else if (input_mode != olddefconfig) {
 				if (!conf_cnt++)
 					printf(_("*\n* Restart config...\n*\n"));
 				rootEntry = menu_get_parent_menu(menu);
@@ -452,21 +458,34 @@ static struct option long_opts[] = {
 	{"alldefconfig",    no_argument,       NULL, alldefconfig},
 	{"randconfig",      no_argument,       NULL, randconfig},
 	{"listnewconfig",   no_argument,       NULL, listnewconfig},
-	{"oldnoconfig",     no_argument,       NULL, oldnoconfig},
+	{"olddefconfig",    no_argument,       NULL, olddefconfig},
+	/*
+	 * oldnoconfig is an alias of olddefconfig, because people already
+	 * are dependent on its behavior(sets new symbols to their default
+	 * value but not 'n') with the counter-intuitive name.
+	 */
+	{"oldnoconfig",     no_argument,       NULL, olddefconfig},
 	{NULL, 0, NULL, 0}
 };
 
 int main(int ac, char **av)
 {
+	const char *progname = av[0];
 	int opt;
-	const char *name;
+	const char *name, *defconfig_file = NULL /* gcc uninit */;
 	struct stat tmpstat;
 
 	setlocale(LC_ALL, "");
 	bindtextdomain(PACKAGE, LOCALEDIR);
 	textdomain(PACKAGE);
 
-	while ((opt = getopt_long(ac, av, "", long_opts, NULL)) != -1) {
+	tty_stdio = isatty(0) && isatty(1) && isatty(2);
+
+	while ((opt = getopt_long(ac, av, "s", long_opts, NULL)) != -1) {
+		if (opt == 's') {
+			conf_set_message_callback(NULL);
+			continue;
+		}
 		input_mode = (enum input_mode)opt;
 		switch (opt) {
 		case silentoldconfig:
@@ -480,17 +499,36 @@ int main(int ac, char **av)
 		{
 			struct timeval now;
 			unsigned int seed;
+			char *seed_env;
 
 			/*
 			 * Use microseconds derived seed,
 			 * compensate for systems where it may be zero
 			 */
 			gettimeofday(&now, NULL);
-
 			seed = (unsigned int)((now.tv_sec + 1) * (now.tv_usec + 1));
+
+			seed_env = getenv("KCONFIG_SEED");
+			if( seed_env && *seed_env ) {
+				char *endp;
+				int tmp = (int)strtol(seed_env, &endp, 0);
+				if (*endp == '\0') {
+					seed = tmp;
+				}
+			}
+			fprintf( stderr, "KCONFIG_SEED=0x%X\n", seed );
 			srand(seed);
 			break;
 		}
+		case oldaskconfig:
+		case oldconfig:
+		case allnoconfig:
+		case allyesconfig:
+		case allmodconfig:
+		case alldefconfig:
+		case listnewconfig:
+		case olddefconfig:
+			break;
 		case '?':
 			fprintf(stderr, _("See README for usage info\n"));
 			exit(1);
@@ -533,7 +571,7 @@ int main(int ac, char **av)
 	case oldaskconfig:
 	case oldconfig:
 	case listnewconfig:
-	case oldnoconfig:
+	case olddefconfig:
 		conf_read(NULL);
 		break;
 	case allnoconfig:
@@ -542,8 +580,15 @@ int main(int ac, char **av)
 	case alldefconfig:
 	case randconfig:
 		name = getenv("KCONFIG_ALLCONFIG");
-		if (name && !stat(name, &tmpstat)) {
-			conf_read_simple(name, S_DEF_USER);
+		if (!name)
+			break;
+		if ((strcmp(name, "") != 0) && (strcmp(name, "1") != 0)) {
+			if (conf_read_simple(name, S_DEF_USER)) {
+				fprintf(stderr,
+					_("*** Can't read seed configuration \"%s\"!\n"),
+					name);
+				exit(1);
+			}
 			break;
 		}
 		switch (input_mode) {
@@ -554,10 +599,13 @@ int main(int ac, char **av)
 		case randconfig:	name = "allrandom.config"; break;
 		default: break;
 		}
-		if (!stat(name, &tmpstat))
-			conf_read_simple(name, S_DEF_USER);
-		else if (!stat("all.config", &tmpstat))
-			conf_read_simple("all.config", S_DEF_USER);
+		if (conf_read_simple(name, S_DEF_USER) &&
+		    conf_read_simple("all.config", S_DEF_USER)) {
+			fprintf(stderr,
+				_("*** KCONFIG_ALLCONFIG set, but no \"%s\" or \"all.config\" file found\n"),
+				name);
+			exit(1);
+		}
 		break;
 	default:
 		break;
@@ -572,7 +620,7 @@ int main(int ac, char **av)
 				return 1;
 			}
 		}
-		valid_stdin = isatty(0) && isatty(1) && isatty(2);
+		valid_stdin = tty_stdio;
 	}
 
 	switch (input_mode) {
@@ -589,7 +637,8 @@ int main(int ac, char **av)
 		conf_set_all_new_symbols(def_default);
 		break;
 	case randconfig:
-		conf_set_all_new_symbols(def_random);
+		/* Really nothing to do in this loop */
+		while (conf_set_all_new_symbols(def_random)) ;
 		break;
 	case defconfig:
 		conf_set_all_new_symbols(def_default);
@@ -603,7 +652,7 @@ int main(int ac, char **av)
 		/* fall through */
 	case oldconfig:
 	case listnewconfig:
-	case oldnoconfig:
+	case olddefconfig:
 	case silentoldconfig:
 		/* Update until a loop caused no more changes */
 		do {
@@ -611,7 +660,7 @@ int main(int ac, char **av)
 			check_conf(&rootmenu);
 		} while (conf_cnt &&
 			 (input_mode != listnewconfig &&
-			  input_mode != oldnoconfig));
+			  input_mode != olddefconfig));
 		break;
 	}
 
@@ -623,11 +672,15 @@ int main(int ac, char **av)
 			fprintf(stderr, _("\n*** Error during writing of the configuration.\n\n"));
 			exit(1);
 		}
-		/* In crosstool-NG, we do not use the autoconf stuff */
+		/* In crosstool-NG, we do not use the autoconf stuff
+		if (conf_write_autoconf()) {
+			fprintf(stderr, _("\n*** Error during update of the configuration.\n\n"));
+			return 1;
+		} */
 	} else if (input_mode == savedefconfig) {
 		if (conf_write_defconfig(defconfig_file)) {
 			fprintf(stderr, _("n*** Error while saving defconfig to: %s\n\n"),
-			        defconfig_file);
+				defconfig_file);
 			return 1;
 		}
 	} else if (input_mode != listnewconfig) {
@@ -638,13 +691,11 @@ int main(int ac, char **av)
 	}
 	return 0;
 }
+
 /*
  * Helper function to facilitate fgets() by Jean Sacren.
  */
-void xfgets(str, size, in)
-	char *str;
-	int size;
-	FILE *in;
+void xfgets(char *str, int size, FILE *in)
 {
 	if (fgets(str, size, in) == NULL)
 		fprintf(stderr, "\nError in reading or end of file.\n");
diff --git a/kconfig/confdata.c b/kconfig/confdata.c
index 9cb97b62..c814f576 100644
--- a/kconfig/confdata.c
+++ b/kconfig/confdata.c
@@ -7,15 +7,20 @@
 #include <ctype.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
 #include <unistd.h>
 
-#define LKC_DIRECT_LINK
 #include "lkc.h"
 
+struct conf_printer {
+	void (*print_symbol)(FILE *, struct symbol *, const char *, void *);
+	void (*print_comment)(FILE *, const char *, void *);
+};
+
 static void conf_warning(const char *fmt, ...)
 	__attribute__ ((format (printf, 1, 2)));
 
@@ -59,6 +64,7 @@ static void conf_message(const char *fmt, ...)
 	va_start(ap, fmt);
 	if (conf_message_callback)
 		conf_message_callback(fmt, ap);
+	va_end(ap);
 }
 
 const char *conf_get_configname(void)
@@ -128,6 +134,7 @@ static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
 			sym->flags |= def_flags;
 			break;
 		}
+		/* fall through */
 	case S_BOOLEAN:
 		if (p[0] == 'y') {
 			sym->def[def].tri = yes;
@@ -139,8 +146,10 @@ static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
 			sym->flags |= def_flags;
 			break;
 		}
-		conf_warning("symbol value '%s' invalid for %s", p, sym->name);
-		break;
+		if (def != S_DEF_AUTO)
+			conf_warning("symbol value '%s' invalid for %s",
+				     p, sym->name);
+		return 1;
 	case S_OTHER:
 		if (*p != '"') {
 			for (p2 = p; *p2 && !isspace(*p2); p2++)
@@ -148,6 +157,7 @@ static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
 			sym->type = S_STRING;
 			goto done;
 		}
+		/* fall through */
 	case S_STRING:
 		if (*p++ != '"')
 			break;
@@ -159,9 +169,11 @@ static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
 			memmove(p2, p2 + 1, strlen(p2));
 		}
 		if (!p2) {
-			conf_warning("invalid string found");
+			if (def != S_DEF_AUTO)
+				conf_warning("invalid string found");
 			return 1;
 		}
+		/* fall through */
 	case S_INT:
 	case S_HEX:
 	done:
@@ -169,7 +181,9 @@ static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
 			sym->def[def].val = strdup(p);
 			sym->flags |= def_flags;
 		} else {
-			conf_warning("symbol value '%s' invalid for %s", p, sym->name);
+			if (def != S_DEF_AUTO)
+				conf_warning("symbol value '%s' invalid for %s",
+					     p, sym->name);
 			return 1;
 		}
 		break;
@@ -179,10 +193,66 @@ static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
 	return 0;
 }
 
+#define LINE_GROWTH 16
+static int add_byte(int c, char **lineptr, size_t slen, size_t *n)
+{
+	char *nline;
+	size_t new_size = slen + 1;
+	if (new_size > *n) {
+		new_size += LINE_GROWTH - 1;
+		new_size *= 2;
+		nline = realloc(*lineptr, new_size);
+		if (!nline)
+			return -1;
+
+		*lineptr = nline;
+		*n = new_size;
+	}
+
+	(*lineptr)[slen] = c;
+
+	return 0;
+}
+
+static ssize_t compat_getline(char **lineptr, size_t *n, FILE *stream)
+{
+	char *line = *lineptr;
+	size_t slen = 0;
+
+	for (;;) {
+		int c = getc(stream);
+
+		switch (c) {
+		case '\n':
+			if (add_byte(c, &line, slen, n) < 0)
+				goto e_out;
+			slen++;
+			/* fall through */
+		case EOF:
+			if (add_byte('\0', &line, slen, n) < 0)
+				goto e_out;
+			*lineptr = line;
+			if (slen == 0)
+				return -1;
+			return slen;
+		default:
+			if (add_byte(c, &line, slen, n) < 0)
+				goto e_out;
+			slen++;
+		}
+	}
+
+e_out:
+	line[slen-1] = '\0';
+	*lineptr = line;
+	return -1;
+}
+
 int conf_read_simple(const char *name, int def)
 {
 	FILE *in = NULL;
-	char line[1024];
+	char   *line = NULL;
+	size_t  line_asize = 0;
 	char *p, *p2;
 	struct symbol *sym;
 	int i, def_flags;
@@ -237,13 +307,14 @@ load:
 		case S_STRING:
 			if (sym->def[def].val)
 				free(sym->def[def].val);
+			/* fall through */
 		default:
 			sym->def[def].val = NULL;
 			sym->def[def].tri = no;
 		}
 	}
 
-	while (fgets(line, sizeof(line), in)) {
+	while (compat_getline(&line, &line_asize, in) != -1) {
 		conf_lineno++;
 		sym = NULL;
 		if (line[0] == '#') {
@@ -331,6 +402,7 @@ setsym:
 			cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
 		}
 	}
+	free(line);
 	fclose(in);
 
 	if (modules_sym)
@@ -340,10 +412,8 @@ setsym:
 
 int conf_read(const char *name)
 {
-	struct symbol *sym, *choice_sym;
-	struct property *prop;
-	struct expr *e;
-	int i, flags;
+	struct symbol *sym;
+	int i;
 
 	sym_set_change_count(0);
 
@@ -353,7 +423,7 @@ int conf_read(const char *name)
 	for_all_symbols(i, sym) {
 		sym_calc_value(sym);
 		if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
-			goto sym_ok;
+			continue;
 		if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
 			/* check that calculated value agrees with saved value */
 			switch (sym->type) {
@@ -362,29 +432,18 @@ int conf_read(const char *name)
 				if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
 					break;
 				if (!sym_is_choice(sym))
-					goto sym_ok;
+					continue;
+				/* fall through */
 			default:
 				if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
-					goto sym_ok;
+					continue;
 				break;
 			}
 		} else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
 			/* no previous value and not saved */
-			goto sym_ok;
+			continue;
 		conf_unsaved++;
 		/* maybe print value in verbose mode... */
-	sym_ok:
-		if (!sym_is_choice(sym))
-			continue;
-		/* The choice symbol only has a set value (and thus is not new)
-		 * if all its visible childs have values.
-		 */
-		prop = sym_get_choice_prop(sym);
-		flags = sym->flags;
-		expr_list_for_each_sym(prop->expr, e, choice_sym)
-			if (choice_sym->visible != no)
-				flags &= choice_sym->flags;
-		sym->flags &= flags | ~SYMBOL_DEF_USER;
 	}
 
 	for_all_symbols(i, sym) {
@@ -417,64 +476,191 @@ int conf_read(const char *name)
 	return 0;
 }
 
-/* Write a S_STRING */
-static void conf_write_string(bool headerfile, const char *name,
-                              const char *str, FILE *out)
+/*
+ * Kconfig configuration printer
+ *
+ * This printer is used when generating the resulting configuration after
+ * kconfig invocation and `defconfig' files. Unset symbol might be omitted by
+ * passing a non-NULL argument to the printer.
+ *
+ */
+static void
+kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
+{
+
+	switch (sym->type) {
+	case S_BOOLEAN:
+	case S_TRISTATE:
+		if (*value == 'n') {
+			bool skip_unset = (arg != NULL);
+
+			if (!skip_unset)
+				fprintf(fp, "# %s%s is not set\n",
+				    CONFIG_, sym->name);
+			return;
+		}
+		break;
+	default:
+		break;
+	}
+
+	fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value);
+}
+
+static void
+kconfig_print_comment(FILE *fp, const char *value, void *arg)
 {
-	int l;
-	if (headerfile)
-		fprintf(out, "#define %s%s \"", CONFIG_, name);
-	else
-		fprintf(out, "%s%s=\"", CONFIG_, name);
-
-	while (1) {
-		l = strcspn(str, "\"\\");
+	const char *p = value;
+	size_t l;
+
+	for (;;) {
+		l = strcspn(p, "\n");
+		fprintf(fp, "#");
 		if (l) {
-			xfwrite(str, l, 1, out);
-			str += l;
+			fprintf(fp, " ");
+			xfwrite(p, l, 1, fp);
+			p += l;
 		}
-		if (!*str)
+		fprintf(fp, "\n");
+		if (*p++ == '\0')
 			break;
-		fprintf(out, "\\%c", *str++);
 	}
-	fputs("\"\n", out);
 }
 
-static void conf_write_symbol(struct symbol *sym, FILE *out, bool write_no)
+static struct conf_printer kconfig_printer_cb =
+{
+	.print_symbol = kconfig_print_symbol,
+	.print_comment = kconfig_print_comment,
+};
+
+/*
+ * Header printer
+ *
+ * This printer is used when generating the `include/generated/autoconf.h' file.
+ */
+static void
+header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
 {
-	const char *str;
 
 	switch (sym->type) {
 	case S_BOOLEAN:
-	case S_TRISTATE:
-		switch (sym_get_tristate_value(sym)) {
-		case no:
-			if (write_no)
-				fprintf(out, "# %s%s is not set\n",
-				    CONFIG_, sym->name);
-			break;
-		case mod:
-			fprintf(out, "%s%s=m\n", CONFIG_, sym->name);
-			break;
-		case yes:
-			fprintf(out, "%s%s=y\n", CONFIG_, sym->name);
+	case S_TRISTATE: {
+		const char *suffix = "";
+
+		switch (*value) {
+		case 'n':
 			break;
+		case 'm':
+			suffix = "_MODULE";
+			/* fall through */
+		default:
+			fprintf(fp, "#define %s%s%s 1\n",
+			    CONFIG_, sym->name, suffix);
 		}
 		break;
-	case S_STRING:
-		conf_write_string(false, sym->name, sym_get_string_value(sym), out);
+	}
+	case S_HEX: {
+		const char *prefix = "";
+
+		if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X'))
+			prefix = "0x";
+		fprintf(fp, "#define %s%s %s%s\n",
+		    CONFIG_, sym->name, prefix, value);
 		break;
-	case S_HEX:
+	}
+	case S_STRING:
 	case S_INT:
-		str = sym_get_string_value(sym);
-		fprintf(out, "%s%s=%s\n", CONFIG_, sym->name, str);
+		fprintf(fp, "#define %s%s %s\n",
+		    CONFIG_, sym->name, value);
 		break;
+	default:
+		break;
+	}
+
+}
+
+static void
+header_print_comment(FILE *fp, const char *value, void *arg)
+{
+	const char *p = value;
+	size_t l;
+
+	fprintf(fp, "/*\n");
+	for (;;) {
+		l = strcspn(p, "\n");
+		fprintf(fp, " *");
+		if (l) {
+			fprintf(fp, " ");
+			xfwrite(p, l, 1, fp);
+			p += l;
+		}
+		fprintf(fp, "\n");
+		if (*p++ == '\0')
+			break;
+	}
+	fprintf(fp, " */\n");
+}
+
+static struct conf_printer header_printer_cb =
+{
+	.print_symbol = header_print_symbol,
+	.print_comment = header_print_comment,
+};
+
+/*
+ * Tristate printer
+ *
+ * This printer is used when generating the `include/config/tristate.conf' file.
+ */
+static void
+tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
+{
+
+	if (sym->type == S_TRISTATE && *value != 'n')
+		fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value));
+}
+
+static struct conf_printer tristate_printer_cb =
+{
+	.print_symbol = tristate_print_symbol,
+	.print_comment = kconfig_print_comment,
+};
+
+static void conf_write_symbol(FILE *fp, struct symbol *sym,
+			      struct conf_printer *printer, void *printer_arg)
+{
+	const char *str;
+
+	switch (sym->type) {
 	case S_OTHER:
 	case S_UNKNOWN:
 		break;
+	case S_STRING:
+		str = sym_get_string_value(sym);
+		str = sym_escape_string_value(str);
+		printer->print_symbol(fp, sym, str, printer_arg);
+		free((void *)str);
+		break;
+	default:
+		str = sym_get_string_value(sym);
+		printer->print_symbol(fp, sym, str, printer_arg);
 	}
 }
 
+static void
+conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg)
+{
+	char buf[256];
+
+	snprintf(buf, sizeof(buf),
+	    "\n"
+	    "Automatically generated file; DO NOT EDIT.\n"
+	    "%s\n",
+	    rootmenu.prompt->text);
+
+	printer->print_comment(fp, buf, printer_arg);
+}
+
 /*
  * Write out a minimal config.
  * All values that has default values are skipped as this is redundant.
@@ -531,7 +717,7 @@ int conf_write_defconfig(const char *filename)
 						goto next_menu;
 				}
 			}
-			conf_write_symbol(sym, out, true);
+			conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
 		}
 next_menu:
 		if (menu->list != NULL) {
@@ -560,8 +746,6 @@ int conf_write(const char *name)
 	const char *basename;
 	const char *str;
 	char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
-	time_t now;
-	int use_timestamp = 1;
 	char *env;
 
 	dirname[0] = 0;
@@ -598,19 +782,7 @@ int conf_write(const char *name)
 	if (!out)
 		return 1;
 
-	time(&now);
-	env = getenv("KCONFIG_NOTIMESTAMP");
-	if (env && *env)
-		use_timestamp = 0;
-
-	fprintf(out, _("#\n"
-		       "# Automatically generated make config: don't edit\n"
-		       "# %s\n"
-		       "%s%s"
-		       "#\n"),
-		     rootmenu.prompt->text,
-		     use_timestamp ? "# " : "",
-		     use_timestamp ? ctime(&now) : "");
+	conf_write_heading(out, &kconfig_printer_cb, NULL);
 
 	if (!conf_get_changed())
 		sym_clear_all_valid();
@@ -631,8 +803,8 @@ int conf_write(const char *name)
 			if (!(sym->flags & SYMBOL_WRITE))
 				goto next;
 			sym->flags &= ~SYMBOL_WRITE;
-			/* Write config symbol to file */
-			conf_write_symbol(sym, out, true);
+
+			conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
 		}
 
 next:
@@ -659,7 +831,7 @@ next:
 			return 1;
 	}
 
-	conf_message(_("configuration saved"));
+	conf_message(_("configuration written to %s"), newname);
 
 	sym_set_change_count(0);
 
@@ -781,7 +953,6 @@ out:
 int conf_write_autoconf(void)
 {
 	struct symbol *sym;
-	const char *str;
 	const char *name;
 	FILE *out, *tristate, *out_h;
 	int i;
@@ -810,68 +981,23 @@ int conf_write_autoconf(void)
 		return 1;
 	}
 
-	fprintf(out, "#\n"
-		     "# Automatically generated make config: don't edit\n"
-		     "# %s\n"
-		     "#\n",
-		     rootmenu.prompt->text);
-	fprintf(tristate, "#\n"
-			  "# Automatically generated - do not edit\n"
-			  "\n");
-	fprintf(out_h, "/*\n"
-		       " * Automatically generated C config: don't edit\n"
-		       " * %s\n"
-		       " */\n",
-		       rootmenu.prompt->text);
+	conf_write_heading(out, &kconfig_printer_cb, NULL);
+
+	conf_write_heading(tristate, &tristate_printer_cb, NULL);
+
+	conf_write_heading(out_h, &header_printer_cb, NULL);
 
 	for_all_symbols(i, sym) {
 		sym_calc_value(sym);
 		if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
 			continue;
 
-		/* write symbol to config file */
-		conf_write_symbol(sym, out, false);
+		/* write symbol to auto.conf, tristate and header files */
+		conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1);
 
-		/* update autoconf and tristate files */
-		switch (sym->type) {
-		case S_BOOLEAN:
-		case S_TRISTATE:
-			switch (sym_get_tristate_value(sym)) {
-			case no:
-				break;
-			case mod:
-				fprintf(tristate, "%s%s=M\n",
-				    CONFIG_, sym->name);
-				fprintf(out_h, "#define %s%s_MODULE 1\n",
-				    CONFIG_, sym->name);
-				break;
-			case yes:
-				if (sym->type == S_TRISTATE)
-					fprintf(tristate,"%s%s=Y\n",
-					    CONFIG_, sym->name);
-				fprintf(out_h, "#define %s%s 1\n",
-				    CONFIG_, sym->name);
-				break;
-			}
-			break;
-		case S_STRING:
-			conf_write_string(true, sym->name, sym_get_string_value(sym), out_h);
-			break;
-		case S_HEX:
-			str = sym_get_string_value(sym);
-			if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
-				fprintf(out_h, "#define %s%s 0x%s\n",
-				    CONFIG_, sym->name, str);
-				break;
-			}
-		case S_INT:
-			str = sym_get_string_value(sym);
-			fprintf(out_h, "#define %s%s %s\n",
-			    CONFIG_, sym->name, str);
-			break;
-		default:
-			break;
-		}
+		conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1);
+
+		conf_write_symbol(out_h, sym, &header_printer_cb, NULL);
 	}
 	fclose(out);
 	fclose(tristate);
@@ -925,7 +1051,7 @@ void conf_set_changed_callback(void (*fn)(void))
 	conf_changed_callback = fn;
 }
 
-static void randomize_choice_values(struct symbol *csym)
+static bool randomize_choice_values(struct symbol *csym)
 {
 	struct property *prop;
 	struct symbol *sym;
@@ -938,7 +1064,7 @@ static void randomize_choice_values(struct symbol *csym)
 	 * In both cases stop.
 	 */
 	if (csym->curr.tri != yes)
-		return;
+		return false;
 
 	prop = sym_get_choice_prop(csym);
 
@@ -962,13 +1088,18 @@ static void randomize_choice_values(struct symbol *csym)
 		else {
 			sym->def[S_DEF_USER].tri = no;
 		}
+		sym->flags |= SYMBOL_DEF_USER;
+		/* clear VALID to get value calculated */
+		sym->flags &= ~SYMBOL_VALID;
 	}
 	csym->flags |= SYMBOL_DEF_USER;
 	/* clear VALID to get value calculated */
 	csym->flags &= ~(SYMBOL_VALID);
+
+	return true;
 }
 
-static void set_all_choice_values(struct symbol *csym)
+void set_all_choice_values(struct symbol *csym)
 {
 	struct property *prop;
 	struct symbol *sym;
@@ -985,20 +1116,66 @@ static void set_all_choice_values(struct symbol *csym)
 	}
 	csym->flags |= SYMBOL_DEF_USER;
 	/* clear VALID to get value calculated */
-	csym->flags &= ~(SYMBOL_VALID);
+	csym->flags &= ~(SYMBOL_VALID | SYMBOL_NEED_SET_CHOICE_VALUES);
 }
 
-void conf_set_all_new_symbols(enum conf_def_mode mode)
+bool conf_set_all_new_symbols(enum conf_def_mode mode)
 {
 	struct symbol *sym, *csym;
-	int i, cnt;
+	int i, cnt, pby, pty, ptm;	/* pby: probability of boolean  = y
+					 * pty: probability of tristate = y
+					 * ptm: probability of tristate = m
+					 */
+
+	pby = 50; pty = ptm = 33; /* can't go as the default in switch-case
+				   * below, otherwise gcc whines about
+				   * -Wmaybe-uninitialized */
+	if (mode == def_random) {
+		int n, p[3];
+		char *env = getenv("KCONFIG_PROBABILITY");
+		n = 0;
+		while( env && *env ) {
+			char *endp;
+			int tmp = strtol( env, &endp, 10 );
+			if( tmp >= 0 && tmp <= 100 ) {
+				p[n++] = tmp;
+			} else {
+				errno = ERANGE;
+				perror( "KCONFIG_PROBABILITY" );
+				exit( 1 );
+			}
+			env = (*endp == ':') ? endp+1 : endp;
+			if( n >=3 ) {
+				break;
+			}
+		}
+		switch( n ) {
+		case 1:
+			pby = p[0]; ptm = pby/2; pty = pby-ptm;
+			break;
+		case 2:
+			pty = p[0]; ptm = p[1]; pby = pty + ptm;
+			break;
+		case 3:
+			pby = p[0]; pty = p[1]; ptm = p[2];
+			break;
+		}
+
+		if( pty+ptm > 100 ) {
+			errno = ERANGE;
+			perror( "KCONFIG_PROBABILITY" );
+			exit( 1 );
+		}
+	}
+	bool has_changed = false;
 
 	for_all_symbols(i, sym) {
-		if (sym_has_value(sym))
+		if (sym_has_value(sym) || (sym->flags & SYMBOL_VALID))
 			continue;
 		switch (sym_get_type(sym)) {
 		case S_BOOLEAN:
 		case S_TRISTATE:
+			has_changed = true;
 			switch (mode) {
 			case def_yes:
 				sym->def[S_DEF_USER].tri = yes;
@@ -1007,11 +1184,21 @@ void conf_set_all_new_symbols(enum conf_def_mode mode)
 				sym->def[S_DEF_USER].tri = mod;
 				break;
 			case def_no:
-				sym->def[S_DEF_USER].tri = no;
+				if (sym->flags & SYMBOL_ALLNOCONFIG_Y)
+					sym->def[S_DEF_USER].tri = yes;
+				else
+					sym->def[S_DEF_USER].tri = no;
 				break;
 			case def_random:
-				cnt = sym_get_type(sym) == S_TRISTATE ? 3 : 2;
-				sym->def[S_DEF_USER].tri = (tristate)(rand() % cnt);
+				sym->def[S_DEF_USER].tri = no;
+				cnt = rand() % 100;
+				if (sym->type == S_TRISTATE) {
+					if (cnt < pty)
+						sym->def[S_DEF_USER].tri = yes;
+					else if (cnt < (pty+ptm))
+						sym->def[S_DEF_USER].tri = mod;
+				} else if (cnt < pby)
+					sym->def[S_DEF_USER].tri = yes;
 				break;
 			default:
 				continue;
@@ -1036,14 +1223,26 @@ void conf_set_all_new_symbols(enum conf_def_mode mode)
 	 * selected in a choice block and we set it to yes,
 	 * and the rest to no.
 	 */
+	if (mode != def_random) {
+		for_all_symbols(i, csym) {
+			if ((sym_is_choice(csym) && !sym_has_value(csym)) ||
+			    sym_is_choice_value(csym))
+				csym->flags |= SYMBOL_NEED_SET_CHOICE_VALUES;
+		}
+	}
+
 	for_all_symbols(i, csym) {
 		if (sym_has_value(csym) || !sym_is_choice(csym))
 			continue;
 
 		sym_calc_value(csym);
 		if (mode == def_random)
-			randomize_choice_values(csym);
-		else
+			has_changed = randomize_choice_values(csym);
+		else {
 			set_all_choice_values(csym);
+			has_changed = true;
+		}
 	}
+
+	return has_changed;
 }
diff --git a/kconfig/expr.c b/kconfig/expr.c
index 00100345..667d1aa2 100644
--- a/kconfig/expr.c
+++ b/kconfig/expr.c
@@ -7,15 +7,16 @@
 #include <stdlib.h>
 #include <string.h>
 
-#define LKC_DIRECT_LINK
 #include "lkc.h"
 
 #define DEBUG_EXPR	0
 
+static int expr_eq(struct expr *e1, struct expr *e2);
+static struct expr *expr_eliminate_yn(struct expr *e);
+
 struct expr *expr_alloc_symbol(struct symbol *sym)
 {
-	struct expr *e = malloc(sizeof(*e));
-	memset(e, 0, sizeof(*e));
+	struct expr *e = xcalloc(1, sizeof(*e));
 	e->type = E_SYMBOL;
 	e->left.sym = sym;
 	return e;
@@ -23,8 +24,7 @@ struct expr *expr_alloc_symbol(struct symbol *sym)
 
 struct expr *expr_alloc_one(enum expr_type type, struct expr *ce)
 {
-	struct expr *e = malloc(sizeof(*e));
-	memset(e, 0, sizeof(*e));
+	struct expr *e = xcalloc(1, sizeof(*e));
 	e->type = type;
 	e->left.expr = ce;
 	return e;
@@ -32,8 +32,7 @@ struct expr *expr_alloc_one(enum expr_type type, struct expr *ce)
 
 struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2)
 {
-	struct expr *e = malloc(sizeof(*e));
-	memset(e, 0, sizeof(*e));
+	struct expr *e = xcalloc(1, sizeof(*e));
 	e->type = type;
 	e->left.expr = e1;
 	e->right.expr = e2;
@@ -42,8 +41,7 @@ struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e
 
 struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2)
 {
-	struct expr *e = malloc(sizeof(*e));
-	memset(e, 0, sizeof(*e));
+	struct expr *e = xcalloc(1, sizeof(*e));
 	e->type = type;
 	e->left.sym = s1;
 	e->right.sym = s2;
@@ -71,7 +69,7 @@ struct expr *expr_copy(const struct expr *org)
 	if (!org)
 		return NULL;
 
-	e = malloc(sizeof(*org));
+	e = xmalloc(sizeof(*org));
 	memcpy(e, org, sizeof(*org));
 	switch (org->type) {
 	case E_SYMBOL:
@@ -81,6 +79,10 @@ struct expr *expr_copy(const struct expr *org)
 		e->left.expr = expr_copy(org->left.expr);
 		break;
 	case E_EQUAL:
+	case E_GEQ:
+	case E_GTH:
+	case E_LEQ:
+	case E_LTH:
 	case E_UNEQUAL:
 		e->left.sym = org->left.sym;
 		e->right.sym = org->right.sym;
@@ -113,6 +115,10 @@ void expr_free(struct expr *e)
 		expr_free(e->left.expr);
 		return;
 	case E_EQUAL:
+	case E_GEQ:
+	case E_GTH:
+	case E_LEQ:
+	case E_LTH:
 	case E_UNEQUAL:
 		break;
 	case E_OR:
@@ -191,7 +197,7 @@ void expr_eliminate_eq(struct expr **ep1, struct expr **ep2)
 #undef e1
 #undef e2
 
-int expr_eq(struct expr *e1, struct expr *e2)
+static int expr_eq(struct expr *e1, struct expr *e2)
 {
 	int res, old_count;
 
@@ -199,6 +205,10 @@ int expr_eq(struct expr *e1, struct expr *e2)
 		return 0;
 	switch (e1->type) {
 	case E_EQUAL:
+	case E_GEQ:
+	case E_GTH:
+	case E_LEQ:
+	case E_LTH:
 	case E_UNEQUAL:
 		return e1->left.sym == e2->left.sym && e1->right.sym == e2->right.sym;
 	case E_SYMBOL:
@@ -233,7 +243,7 @@ int expr_eq(struct expr *e1, struct expr *e2)
 	return 0;
 }
 
-struct expr *expr_eliminate_yn(struct expr *e)
+static struct expr *expr_eliminate_yn(struct expr *e)
 {
 	struct expr *tmp;
 
@@ -558,62 +568,6 @@ static void expr_eliminate_dups1(enum expr_type type, struct expr **ep1, struct
 #undef e2
 }
 
-static void expr_eliminate_dups2(enum expr_type type, struct expr **ep1, struct expr **ep2)
-{
-#define e1 (*ep1)
-#define e2 (*ep2)
-	struct expr *tmp, *tmp1, *tmp2;
-
-	if (e1->type == type) {
-		expr_eliminate_dups2(type, &e1->left.expr, &e2);
-		expr_eliminate_dups2(type, &e1->right.expr, &e2);
-		return;
-	}
-	if (e2->type == type) {
-		expr_eliminate_dups2(type, &e1, &e2->left.expr);
-		expr_eliminate_dups2(type, &e1, &e2->right.expr);
-	}
-	if (e1 == e2)
-		return;
-
-	switch (e1->type) {
-	case E_OR:
-		expr_eliminate_dups2(e1->type, &e1, &e1);
-		// (FOO || BAR) && (!FOO && !BAR) -> n
-		tmp1 = expr_transform(expr_alloc_one(E_NOT, expr_copy(e1)));
-		tmp2 = expr_copy(e2);
-		tmp = expr_extract_eq_and(&tmp1, &tmp2);
-		if (expr_is_yes(tmp1)) {
-			expr_free(e1);
-			e1 = expr_alloc_symbol(&symbol_no);
-			trans_count++;
-		}
-		expr_free(tmp2);
-		expr_free(tmp1);
-		expr_free(tmp);
-		break;
-	case E_AND:
-		expr_eliminate_dups2(e1->type, &e1, &e1);
-		// (FOO && BAR) || (!FOO || !BAR) -> y
-		tmp1 = expr_transform(expr_alloc_one(E_NOT, expr_copy(e1)));
-		tmp2 = expr_copy(e2);
-		tmp = expr_extract_eq_or(&tmp1, &tmp2);
-		if (expr_is_no(tmp1)) {
-			expr_free(e1);
-			e1 = expr_alloc_symbol(&symbol_yes);
-			trans_count++;
-		}
-		expr_free(tmp2);
-		expr_free(tmp1);
-		expr_free(tmp);
-		break;
-	default:
-		;
-	}
-#undef e1
-#undef e2
-}
-
 struct expr *expr_eliminate_dups(struct expr *e)
 {
 	int oldcount;
@@ -626,7 +580,6 @@ struct expr *expr_eliminate_dups(struct expr *e)
 		switch (e->type) {
 		case E_OR: case E_AND:
 			expr_eliminate_dups1(e->type, &e, &e);
-			expr_eliminate_dups2(e->type, &e, &e);
 		default:
 			;
 		}
@@ -646,6 +599,10 @@ struct expr *expr_transform(struct expr *e)
 		return NULL;
 	switch (e->type) {
 	case E_EQUAL:
+	case E_GEQ:
+	case E_GTH:
+	case E_LEQ:
+	case E_LTH:
 	case E_UNEQUAL:
 	case E_SYMBOL:
 	case E_LIST:
@@ -718,6 +675,22 @@ struct expr *expr_transform(struct expr *e)
 			e = tmp;
 			e->type = e->type == E_EQUAL ? E_UNEQUAL : E_EQUAL;
 			break;
+		case E_LEQ:
+		case E_GEQ:
+			// !a<='x' -> a>'x'
+			tmp = e->left.expr;
+			free(e);
+			e = tmp;
+			e->type = e->type == E_LEQ ? E_GTH : E_LTH;
+			break;
+		case E_LTH:
+		case E_GTH:
+			// !a<'x' -> a>='x'
+			tmp = e->left.expr;
+			free(e);
+			e = tmp;
+			e->type = e->type == E_LTH ? E_GEQ : E_LEQ;
+			break;
 		case E_OR:
 			// !(a || b) -> !a && !b
 			tmp = e->left.expr;
@@ -788,6 +761,10 @@ int expr_contains_symbol(struct expr *dep, struct symbol *sym)
 	case E_SYMBOL:
 		return dep->left.sym == sym;
 	case E_EQUAL:
+	case E_GEQ:
+	case E_GTH:
+	case E_LEQ:
+	case E_LTH:
 	case E_UNEQUAL:
 		return dep->left.sym == sym ||
 		       dep->right.sym == sym;
@@ -828,57 +805,6 @@ bool expr_depends_symbol(struct expr *dep, struct symbol *sym)
  	return false;
 }
 
-struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2)
-{
-	struct expr *tmp = NULL;
-	expr_extract_eq(E_AND, &tmp, ep1, ep2);
-	if (tmp) {
-		*ep1 = expr_eliminate_yn(*ep1);
-		*ep2 = expr_eliminate_yn(*ep2);
-	}
-	return tmp;
-}
-
-struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2)
-{
-	struct expr *tmp = NULL;
-	expr_extract_eq(E_OR, &tmp, ep1, ep2);
-	if (tmp) {
-		*ep1 = expr_eliminate_yn(*ep1);
-		*ep2 = expr_eliminate_yn(*ep2);
-	}
-	return tmp;
-}
-
-void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2)
-{
-#define e1 (*ep1)
-#define e2 (*ep2)
-	if (e1->type == type) {
-		expr_extract_eq(type, ep, &e1->left.expr, &e2);
-		expr_extract_eq(type, ep, &e1->right.expr, &e2);
-		return;
-	}
-	if (e2->type == type) {
-		expr_extract_eq(type, ep, ep1, &e2->left.expr);
-		expr_extract_eq(type, ep, ep1, &e2->right.expr);
-		return;
-	}
-	if (expr_eq(e1, e2)) {
-		*ep = *ep ? expr_alloc_two(type, *ep, e1) : e1;
-		expr_free(e2);
-		if (type == E_AND) {
-			e1 = expr_alloc_symbol(&symbol_yes);
-			e2 = expr_alloc_symbol(&symbol_yes);
-		} else if (type == E_OR) {
-			e1 = expr_alloc_symbol(&symbol_no);
-			e2 = expr_alloc_symbol(&symbol_no);
-		}
-	}
-#undef e1
-#undef e2
-}
-
 struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym)
 {
 	struct expr *e1, *e2;
@@ -913,6 +839,10 @@ struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symb
 	case E_NOT:
 		return expr_trans_compare(e->left.expr, type == E_EQUAL ? E_UNEQUAL : E_EQUAL, sym);
 	case E_UNEQUAL:
+	case E_LTH:
+	case E_LEQ:
+	case E_GTH:
+	case E_GEQ:
 	case E_EQUAL:
 		if (type == E_EQUAL) {
 			if (sym == &symbol_yes)
@@ -940,10 +870,57 @@ struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symb
 	return NULL;
 }
 
+enum string_value_kind {
+	k_string,
+	k_signed,
+	k_unsigned,
+	k_invalid
+};
+
+union string_value {
+	unsigned long long u;
+	signed long long s;
+};
+
+static enum string_value_kind expr_parse_string(const char *str,
+						enum symbol_type type,
+						union string_value *val)
+{
+	char *tail;
+	enum string_value_kind kind;
+
+	errno = 0;
+	switch (type) {
+	case S_BOOLEAN:
+	case S_TRISTATE:
+		return k_string;
+	case S_INT:
+		val->s = strtoll(str, &tail, 10);
+		kind = k_signed;
+		break;
+	case S_HEX:
+		val->u = strtoull(str, &tail, 16);
+		kind = k_unsigned;
+		break;
+	case S_STRING:
+	case S_UNKNOWN:
+		val->s = strtoll(str, &tail, 0);
+		kind = k_signed;
+		break;
+	default:
+		return k_invalid;
+	}
+	return !errno && !*tail && tail > str && isxdigit(tail[-1])
+	       ? kind : k_string;
+}
+
 tristate expr_calc_value(struct expr *e)
 {
 	tristate val1, val2;
 	const char *str1, *str2;
+	enum string_value_kind k1 = k_string, k2 = k_string;
+	union string_value lval = {}, rval = {};
+	int res;
 
 	if (!e)
 		return yes;
@@ -964,31 +941,70 @@ tristate expr_calc_value(struct expr *e)
 		val1 = expr_calc_value(e->left.expr);
 		return EXPR_NOT(val1);
 	case E_EQUAL:
-		sym_calc_value(e->left.sym);
-		sym_calc_value(e->right.sym);
-		str1 = sym_get_string_value(e->left.sym);
-		str2 = sym_get_string_value(e->right.sym);
-		return !strcmp(str1, str2) ? yes : no;
+	case E_GEQ:
+	case E_GTH:
+	case E_LEQ:
+	case E_LTH:
 	case E_UNEQUAL:
-		sym_calc_value(e->left.sym);
-		sym_calc_value(e->right.sym);
-		str1 = sym_get_string_value(e->left.sym);
-		str2 = sym_get_string_value(e->right.sym);
-		return !strcmp(str1, str2) ? no : yes;
+		break;
 	default:
 		printf("expr_calc_value: %d?\n", e->type);
 		return no;
 	}
+
+	sym_calc_value(e->left.sym);
+	sym_calc_value(e->right.sym);
+	str1 = sym_get_string_value(e->left.sym);
+	str2 = sym_get_string_value(e->right.sym);
+
+	if (e->left.sym->type != S_STRING || e->right.sym->type != S_STRING) {
+		k1 = expr_parse_string(str1, e->left.sym->type, &lval);
+		k2 = expr_parse_string(str2, e->right.sym->type, &rval);
+	}
+
+	if (k1 == k_string || k2 == k_string)
+		res = strcmp(str1, str2);
+	else if (k1 == k_invalid || k2 == k_invalid) {
+		if (e->type != E_EQUAL && e->type != E_UNEQUAL) {
+			printf("Cannot compare \"%s\" and \"%s\"\n", str1, str2);
+			return no;
+		}
+		res = strcmp(str1, str2);
+	} else if (k1 == k_unsigned || k2 == k_unsigned)
+		res = (lval.u > rval.u) - (lval.u < rval.u);
+	else /* if (k1 == k_signed && k2 == k_signed) */
+		res = (lval.s > rval.s) - (lval.s < rval.s);
+
+	switch(e->type) {
+	case E_EQUAL:
+		return res ? no : yes;
+	case E_GEQ:
+		return res >= 0 ? yes : no;
+	case E_GTH:
+		return res > 0 ? yes : no;
+	case E_LEQ:
+		return res <= 0 ? yes : no;
+	case E_LTH:
+		return res < 0 ? yes : no;
+	case E_UNEQUAL:
+		return res ? yes : no;
+	default:
+		printf("expr_calc_value: relation %d?\n", e->type);
+		return no;
+	}
 }
 
-int expr_compare_type(enum expr_type t1, enum expr_type t2)
+static int expr_compare_type(enum expr_type t1, enum expr_type t2)
 {
-#if 0
-	return 1;
-#else
 	if (t1 == t2)
 		return 0;
 	switch (t1) {
+	case E_LEQ:
+	case E_LTH:
+	case E_GEQ:
+	case E_GTH:
+		if (t2 == E_EQUAL || t2 == E_UNEQUAL)
+			return 1;
 	case E_EQUAL:
 	case E_UNEQUAL:
 		if (t2 == E_NOT)
@@ -1010,7 +1026,6 @@ int expr_compare_type(enum expr_type t1, enum expr_type t2)
 	}
 	printf("[%dgt%d?]", t1, t2);
 	return 0;
-#endif
 }
 
 static inline struct expr *
@@ -1083,6 +1098,24 @@ void expr_print(struct expr *e, void (*fn)(void *, struct symbol *, const char *
 		fn(data, NULL, "=");
 		fn(data, e->right.sym, e->right.sym->name);
 		break;
+	case E_LEQ:
+	case E_LTH:
+		if (e->left.sym->name)
+			fn(data, e->left.sym, e->left.sym->name);
+		else
+			fn(data, NULL, "<choice>");
+		fn(data, NULL, e->type == E_LEQ ? "<=" : "<");
+		fn(data, e->right.sym, e->right.sym->name);
+		break;
+	case E_GEQ:
+	case E_GTH:
+		if (e->left.sym->name)
+			fn(data, e->left.sym, e->left.sym->name);
+		else
+			fn(data, NULL, "<choice>");
+		fn(data, NULL, e->type == E_LEQ ? ">=" : ">");
+		fn(data, e->right.sym, e->right.sym->name);
+		break;
 	case E_UNEQUAL:
 		if (e->left.sym->name)
 			fn(data, e->left.sym, e->left.sym->name);
diff --git a/kconfig/expr.h b/kconfig/expr.h
index 16bfae2d..973b6f73 100644
--- a/kconfig/expr.h
+++ b/kconfig/expr.h
@@ -10,7 +10,9 @@
 extern "C" {
 #endif
 
+#include <assert.h>
 #include <stdio.h>
+#include "list.h"
 #ifndef __cplusplus
 #include <stdbool.h>
 #endif
@@ -27,7 +29,9 @@ typedef enum tristate {
 } tristate;
 
 enum expr_type {
-	E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_LIST, E_SYMBOL, E_RANGE
+	E_NONE, E_OR, E_AND, E_NOT,
+	E_EQUAL, E_UNEQUAL, E_LTH, E_LEQ, E_GTH, E_GEQ,
+	E_LIST, E_SYMBOL, E_RANGE
 };
 
 union expr_data {
@@ -91,7 +95,7 @@ struct symbol {
 #define SYMBOL_CHOICEVAL  0x0020  /* used as a value in a choice block */
 #define SYMBOL_VALID      0x0080  /* set when symbol.curr is calculated */
 #define SYMBOL_OPTIONAL   0x0100  /* choice is optional - values can be 'n' */
-#define SYMBOL_WRITE      0x0200  /* ? */
+#define SYMBOL_WRITE      0x0200  /* write symbol to file (KCONFIG_CONFIG) */
 #define SYMBOL_CHANGED    0x0400  /* ? */
 #define SYMBOL_AUTO       0x1000  /* value from environment variable */
 #define SYMBOL_CHECKED    0x2000  /* used during dependency checking */
@@ -104,6 +108,12 @@ struct symbol {
 #define SYMBOL_DEF3       0x40000  /* symbol.def[S_DEF_3] is valid */
 #define SYMBOL_DEF4       0x80000  /* symbol.def[S_DEF_4] is valid */
 
+/* choice values need to be set before calculating this symbol value */
+#define SYMBOL_NEED_SET_CHOICE_VALUES  0x100000
+
+/* Set symbol to y if allnoconfig; used for symbols that hide others */
+#define SYMBOL_ALLNOCONFIG_Y 0x200000
+
 #define SYMBOL_MAXLENGTH	256
 #define SYMBOL_HASHSIZE		9973
 
@@ -172,7 +182,14 @@ struct menu {
 #define MENU_CHANGED		0x0001
 #define MENU_ROOT		0x0002
 
-#ifndef SWIG
+struct jump_key {
+	struct list_head entries;
+	size_t offset;
+	struct menu *target;
+	int index;
+};
+
+#define JUMP_NB			9
 
 extern struct file *file_list;
 extern struct file *current_file;
@@ -190,18 +207,13 @@ struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
 struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
 struct expr *expr_copy(const struct expr *org);
 void expr_free(struct expr *e);
-int expr_eq(struct expr *e1, struct expr *e2);
 void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
 tristate expr_calc_value(struct expr *e);
-struct expr *expr_eliminate_yn(struct expr *e);
 struct expr *expr_trans_bool(struct expr *e);
 struct expr *expr_eliminate_dups(struct expr *e);
 struct expr *expr_transform(struct expr *e);
 int expr_contains_symbol(struct expr *dep, struct symbol *sym);
 bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
-struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);
-struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);
-void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);
 struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
 struct expr *expr_simplify_unmet_dep(struct expr *e1, struct expr *e2);
 
@@ -218,7 +230,6 @@ static inline int expr_is_no(struct expr *e)
 {
 	return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);
 }
-#endif
 
 #ifdef __cplusplus
 }
diff --git a/kconfig/kconfig.mk b/kconfig/kconfig.mk
index 06e022c1..f59de5aa 100644
--- a/kconfig/kconfig.mk
+++ b/kconfig/kconfig.mk
@@ -10,6 +10,11 @@ PHONY += $(configurators)
 
 $(configurators): config_files
 
+export CT_IS_A_BACKEND:=$(CT_IS_A_BACKEND)
+export CT_BACKEND_ARCH:=$(CT_BACKEND_ARCH)
+export CT_BACKEND_KERNEL:=$(CT_BACKEND_KERNEL)
+export CT_BACKEND_LIBC:=$(CT_BACKEND_LIBC)
+
 # We need CONF for savedefconfig in scripts/saveSample.sh
 export CONF  := $(CT_LIB_DIR)/kconfig/conf
 MCONF := $(CT_LIB_DIR)/kconfig/mconf
@@ -55,6 +60,7 @@ extractconfig:
 
 help-config::
 	@echo  '  menuconfig         - Update current config using a menu based program'
+	@echo  '  nconfig            - Update current config using a menu based program'
 	@echo  '  oldconfig          - Update current config using a provided .config as base'
 	@echo  '  extractconfig      - Extract to stdout the configuration items from a'
 	@echo  '                       build.log file piped to stdin'
diff --git a/kconfig/list.h b/kconfig/list.h
new file mode 100644
index 00000000..2cf23f00
--- /dev/null
+++ b/kconfig/list.h
@@ -0,0 +1,131 @@
+#ifndef LIST_H
+#define LIST_H
+
+/*
+ * Copied from include/linux/...
+ */
+
+#undef offsetof
+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+
+/**
+ * container_of - cast a member of a structure out to the containing structure
+ * @ptr:        the pointer to the member.
+ * @type:       the type of the container struct this is embedded in.
+ * @member:     the name of the member within the struct.
+ *
+ */
+#define container_of(ptr, type, member) ({                      \
+	const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
+	(type *)( (char *)__mptr - offsetof(type,member) );})
+
+
+struct list_head {
+	struct list_head *next, *prev;
+};
+
+
+#define LIST_HEAD_INIT(name) { &(name), &(name) }
+
+#define LIST_HEAD(name) \
+	struct list_head name = LIST_HEAD_INIT(name)
+
+/**
+ * list_entry - get the struct for this entry
+ * @ptr:	the &struct list_head pointer.
+ * @type:	the type of the struct this is embedded in.
+ * @member:	the name of the list_head within the struct.
+ */
+#define list_entry(ptr, type, member) \
+	container_of(ptr, type, member)
+
+/**
+ * list_for_each_entry	-	iterate over list of given type
+ * @pos:	the type * to use as a loop cursor.
+ * @head:	the head for your list.
+ * @member:	the name of the list_head within the struct.
+ */
+#define list_for_each_entry(pos, head, member)				\
+	for (pos = list_entry((head)->next, typeof(*pos), member);	\
+	     &pos->member != (head); 	\
+	     pos = list_entry(pos->member.next, typeof(*pos), member))
+
+/**
+ * list_for_each_entry_safe - iterate over list of given type safe against removal of list entry
+ * @pos:	the type * to use as a loop cursor.
+ * @n:		another type * to use as temporary storage
+ * @head:	the head for your list.
+ * @member:	the name of the list_head within the struct.
+ */
+#define list_for_each_entry_safe(pos, n, head, member)			\
+	for (pos = list_entry((head)->next, typeof(*pos), member),	\
+		n = list_entry(pos->member.next, typeof(*pos), member);	\
+	     &pos->member != (head);					\
+	     pos = n, n = list_entry(n->member.next, typeof(*n), member))
+
+/**
+ * list_empty - tests whether a list is empty
+ * @head: the list to test.
+ */
+static inline int list_empty(const struct list_head *head)
+{
+	return head->next == head;
+}
+
+/*
+ * Insert a new entry between two known consecutive entries.
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+static inline void __list_add(struct list_head *_new,
+			      struct list_head *prev,
+			      struct list_head *next)
+{
+	next->prev = _new;
+	_new->next = next;
+	_new->prev = prev;
+	prev->next = _new;
+}
+
+/**
+ * list_add_tail - add a new entry
+ * @new: new entry to be added
+ * @head: list head to add it before
+ *
+ * Insert a new entry before the specified head.
+ * This is useful for implementing queues.
+ */
+static inline void list_add_tail(struct list_head *_new, struct list_head *head)
+{
+	__list_add(_new, head->prev, head);
+}
+
+/*
+ * Delete a list entry by making the prev/next entries
+ * point to each other.
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+static inline void __list_del(struct list_head *prev, struct list_head *next)
+{
+	next->prev = prev;
+	prev->next = next;
+}
+
+#define LIST_POISON1  ((void *) 0x00100100)
+#define LIST_POISON2  ((void *) 0x00200200)
+/**
+ * list_del - deletes entry from list.
+ * @entry: the element to delete from the list.
+ * Note: list_empty() on entry does not return true after this, the entry is
+ * in an undefined state.
+ */
+static inline void list_del(struct list_head *entry)
+{
+	__list_del(entry->prev, entry->next);
+	entry->next = (struct list_head*)LIST_POISON1;
+	entry->prev = (struct list_head*)LIST_POISON2;
+}
+#endif
diff --git a/kconfig/lkc.h b/kconfig/lkc.h
index febf0c94..91ca126e 100644
--- a/kconfig/lkc.h
+++ b/kconfig/lkc.h
@@ -21,14 +21,7 @@ static inline char *bind_textdomain_codeset(const char *dn, char *c) { return c;
 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
 
 #define SRCTREE "srctree"
 
@@ -44,6 +37,12 @@ extern "C" {
 #ifndef CONFIG_
 #define CONFIG_ "CONFIG_"
 #endif
+static inline const char *CONFIG_prefix(void)
+{
+	return getenv( "CONFIG_" ) ?: CONFIG_;
+}
+#undef CONFIG_
+#define CONFIG_ CONFIG_prefix()
 
 #define TF_COMMAND	0x0001
 #define TF_PARAM	0x0002
@@ -60,6 +59,7 @@ enum conf_def_mode {
 #define T_OPT_MODULES		1
 #define T_OPT_DEFCONFIG_LIST	2
 #define T_OPT_ENV		3
+#define T_OPT_ALLNOCONFIG_Y	4
 
 struct kconf_id {
 	int name;
@@ -68,11 +68,6 @@ struct kconf_id {
 	enum symbol_type stype;
 };
 
-#ifdef YYDEBUG
-extern int zconfdebug;
-#endif
-
-int zconfparse(void);
 void zconfdump(FILE *out);
 void zconf_starthelp(void);
 FILE *zconf_fopen(const char *name);
@@ -81,26 +76,23 @@ void zconf_nextfile(const char *name);
 int zconf_lineno(void);
 const char *zconf_curname(void);
 
-/* conf.c */
-void xfgets(char *str, int size, FILE *in);
-
 /* confdata.c */
 const char *conf_get_configname(void);
 const char *conf_get_autoconfig_name(void);
 char *conf_get_default_confname(void);
 void sym_set_change_count(int count);
 void sym_add_change_count(int count);
-void conf_set_all_new_symbols(enum conf_def_mode mode);
+bool conf_set_all_new_symbols(enum conf_def_mode mode);
+void set_all_choice_values(struct symbol *csym);
 
 /* confdata.c and expr.c */
 static inline void xfwrite(const void *str, size_t len, size_t count, FILE *out)
 {
-	if (fwrite(str, len, count, out) < count)
-		fprintf(stderr, "\nError in writing or end of file.\n");
-}
+	assert(len != 0);
 
-/* kconfig_load.c */
-void kconfig_load(void);
+	if (fwrite(str, len, count, out) != count)
+		fprintf(stderr, "Error in writing or end of file.\n");
+}
 
 /* menu.c */
 void _menu_init(void);
@@ -111,7 +103,6 @@ void menu_add_entry(struct symbol *sym);
 void menu_end_entry(void);
 void menu_add_dep(struct expr *dep);
 void menu_add_visibility(struct expr *dep);
-struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep);
 struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep);
 void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep);
 void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep);
@@ -122,6 +113,8 @@ void menu_set_type(int type);
 /* util.c */
 struct file *file_lookup(const char *name);
 int file_write_dep(const char *name);
+void *xmalloc(size_t size);
+void *xcalloc(size_t nmemb, size_t size);
 
 struct gstr {
 	size_t len;
@@ -133,7 +126,6 @@ struct gstr {
 	int max_width;
 };
 struct gstr str_new(void);
-struct gstr str_assign(const char *s);
 void str_free(struct gstr *gs);
 void str_append(struct gstr *gs, const char *s);
 void str_printf(struct gstr *gs, const char *fmt, ...);
@@ -144,8 +136,6 @@ extern struct expr *sym_env_list;
 
 void sym_init(void);
 void sym_clear_all_valid(void);
-void sym_set_all_changed(void);
-void sym_set_changed(struct symbol *sym);
 struct symbol *sym_choice_default(struct symbol *sym);
 const char *sym_get_string_default(struct symbol *sym);
 struct symbol *sym_check_deps(struct symbol *sym);
diff --git a/kconfig/lkc_proto.h b/kconfig/lkc_proto.h
index 17342fef..d5398718 100644
--- a/kconfig/lkc_proto.h
+++ b/kconfig/lkc_proto.h
@@ -1,53 +1,52 @@
 #include <stdarg.h>
 
 /* confdata.c */
-P(conf_parse,void,(const char *name));
-P(conf_read,int,(const char *name));
-P(conf_read_simple,int,(const char *name, int));
-P(conf_write_defconfig,int,(const char *name));
-P(conf_write,int,(const char *name));
-P(conf_write_autoconf,int,(void));
-P(conf_get_changed,bool,(void));
-P(conf_set_changed_callback, void,(void (*fn)(void)));
-P(conf_set_message_callback, void,(void (*fn)(const char *fmt, va_list ap)));
+void conf_parse(const char *name);
+int conf_read(const char *name);
+int conf_read_simple(const char *name, int);
+int conf_write_defconfig(const char *name);
+int conf_write(const char *name);
+int conf_write_autoconf(void);
+bool conf_get_changed(void);
+void conf_set_changed_callback(void (*fn)(void));
+void conf_set_message_callback(void (*fn)(const char *fmt, va_list ap));
 
 /* menu.c */
-P(rootmenu,struct menu,);
+extern struct menu rootmenu;
 
-P(menu_is_visible, bool, (struct menu *menu));
-P(menu_has_prompt, bool, (struct menu *menu));
-P(menu_get_prompt,const char *,(struct menu *menu));
-P(menu_get_root_menu,struct menu *,(struct menu *menu));
-P(menu_get_parent_menu,struct menu *,(struct menu *menu));
-P(menu_has_help,bool,(struct menu *menu));
-P(menu_get_help,const char *,(struct menu *menu));
-P(get_symbol_str, void, (struct gstr *r, struct symbol *sym));
-P(get_relations_str, struct gstr, (struct symbol **sym_arr));
-P(menu_get_ext_help,void,(struct menu *menu, struct gstr *help));
+bool menu_is_empty(struct menu *menu);
+bool menu_is_visible(struct menu *menu);
+bool menu_has_prompt(struct menu *menu);
+const char * menu_get_prompt(struct menu *menu);
+struct menu * menu_get_root_menu(struct menu *menu);
+struct menu * menu_get_parent_menu(struct menu *menu);
+bool menu_has_help(struct menu *menu);
+const char * menu_get_help(struct menu *menu);
+struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head);
+void menu_get_ext_help(struct menu *menu, struct gstr *help);
 
 /* symbol.c */
-P(symbol_hash,struct symbol *,[SYMBOL_HASHSIZE]);
+extern struct symbol * symbol_hash[SYMBOL_HASHSIZE];
 
-P(sym_lookup,struct symbol *,(const char *name, int flags));
-P(sym_find,struct symbol *,(const char *name));
-P(sym_expand_string_value,const char *,(const char *in));
-P(sym_re_search,struct symbol **,(const char *pattern));
-P(sym_type_name,const char *,(enum symbol_type type));
-P(sym_calc_value,void,(struct symbol *sym));
-P(sym_get_type,enum symbol_type,(struct symbol *sym));
-P(sym_tristate_within_range,bool,(struct symbol *sym,tristate tri));
-P(sym_set_tristate_value,bool,(struct symbol *sym,tristate tri));
-P(sym_toggle_tristate_value,tristate,(struct symbol *sym));
-P(sym_string_valid,bool,(struct symbol *sym, const char *newval));
-P(sym_string_within_range,bool,(struct symbol *sym, const char *str));
-P(sym_set_string_value,bool,(struct symbol *sym, const char *newval));
-P(sym_is_changable,bool,(struct symbol *sym));
-P(sym_get_choice_prop,struct property *,(struct symbol *sym));
-P(sym_get_default_prop,struct property *,(struct symbol *sym));
-P(sym_get_string_value,const char *,(struct symbol *sym));
+struct symbol * sym_lookup(const char *name, int flags);
+struct symbol * sym_find(const char *name);
+const char * sym_expand_string_value(const char *in);
+const char * sym_escape_string_value(const char *in);
+struct symbol ** sym_re_search(const char *pattern);
+const char * sym_type_name(enum symbol_type type);
+void sym_calc_value(struct symbol *sym);
+enum symbol_type sym_get_type(struct symbol *sym);
+bool sym_tristate_within_range(struct symbol *sym,tristate tri);
+bool sym_set_tristate_value(struct symbol *sym,tristate tri);
+tristate sym_toggle_tristate_value(struct symbol *sym);
+bool sym_string_valid(struct symbol *sym, const char *newval);
+bool sym_string_within_range(struct symbol *sym, const char *str);
+bool sym_set_string_value(struct symbol *sym, const char *newval);
+bool sym_is_changable(struct symbol *sym);
+struct property * sym_get_choice_prop(struct symbol *sym);
+const char * sym_get_string_value(struct symbol *sym);
 
-P(prop_get_type_name,const char *,(enum prop_type type));
+const char * prop_get_type_name(enum prop_type type);
 
 /* expr.c */
-P(expr_compare_type,int,(enum expr_type t1, enum expr_type t2));
-P(expr_print,void,(struct expr *e, void (*fn)(void *, struct symbol *, const char *), void *data, int prevtoken));
+void expr_print(struct expr *e, void (*fn)(void *, struct symbol *, const char *), void *data, int prevtoken);
diff --git a/kconfig/lxdialog/check-lxdialog.sh b/kconfig/lxdialog/check-lxdialog.sh
index 82cc3a85..5075ebf2 100644
--- a/kconfig/lxdialog/check-lxdialog.sh
+++ b/kconfig/lxdialog/check-lxdialog.sh
@@ -4,7 +4,9 @@
 # What library to link
 ldflags()
 {
-	for ext in so a dylib ; do
+	pkg-config --libs ncursesw 2>/dev/null && exit
+	pkg-config --libs ncurses 2>/dev/null && exit
+	for ext in so a dll.a dylib ; do
 		for lib in ncursesw ncurses curses ; do
 			$cc -print-file-name=lib${lib}.${ext} | grep -q /
 			if [ $? -eq 0 ]; then
@@ -19,12 +21,17 @@ ldflags()
 # Where is ncurses.h?
 ccflags()
 {
-	if [ -f /usr/include/ncurses/ncurses.h ]; then
+	if pkg-config --cflags ncursesw 2>/dev/null; then
+		echo '-DCURSES_LOC="<ncurses.h>" -DNCURSES_WIDECHAR=1'
+	elif pkg-config --cflags ncurses 2>/dev/null; then
+		echo '-DCURSES_LOC="<ncurses.h>"'
+	elif [ -f /usr/include/ncursesw/curses.h ]; then
+		echo '-I/usr/include/ncursesw -DCURSES_LOC="<curses.h>"'
+		echo ' -DNCURSES_WIDECHAR=1'
+	elif [ -f /usr/include/ncurses/ncurses.h ]; then
 		echo '-I/usr/include/ncurses -DCURSES_LOC="<ncurses.h>"'
 	elif [ -f /usr/include/ncurses/curses.h ]; then
-		echo '-I/usr/include/ncurses -DCURSES_LOC="<ncurses/curses.h>"'
-	elif [ -f /usr/include/ncursesw/curses.h ]; then
-		echo '-I/usr/include/ncursesw -DCURSES_LOC="<ncursesw/curses.h>"'
+		echo '-I/usr/include/ncurses -DCURSES_LOC="<curses.h>"'
 	elif [ -f /usr/include/ncurses.h ]; then
 		echo '-DCURSES_LOC="<ncurses.h>"'
 	else
@@ -38,7 +45,7 @@ trap "rm -f $tmp" 0 1 2 3 15
 
 # Check if we can link to ncurses
 check() {
-        $cc -xc - -o $tmp 2>/dev/null <<'EOF'
+        $cc -x c - -o $tmp 2>/dev/null <<'EOF'
 #include CURSES_LOC
 main() {}
 EOF
diff --git a/kconfig/lxdialog/checklist.c b/kconfig/lxdialog/checklist.c
index a2eb80fb..8d016faa 100644
--- a/kconfig/lxdialog/checklist.c
+++ b/kconfig/lxdialog/checklist.c
@@ -132,16 +132,16 @@ int dialog_checklist(const char *title, const char *prompt, int height,
 	}
 
 do_resize:
-	if (getmaxy(stdscr) < (height + 6))
+	if (getmaxy(stdscr) < (height + CHECKLIST_HEIGTH_MIN))
 		return -ERRDISPLAYTOOSMALL;
-	if (getmaxx(stdscr) < (width + 6))
+	if (getmaxx(stdscr) < (width + CHECKLIST_WIDTH_MIN))
 		return -ERRDISPLAYTOOSMALL;
 
 	max_choice = MIN(list_height, item_count());
 
 	/* center dialog box on screen */
-	x = (COLS - width) / 2;
-	y = (LINES - height) / 2;
+	x = (getmaxx(stdscr) - width) / 2;
+	y = (getmaxy(stdscr) - height) / 2;
 
 	draw_shadow(stdscr, y, x, height, width);
 
@@ -168,13 +168,13 @@ do_resize:
 
 	/* create new window for the list */
 	list = subwin(dialog, list_height, list_width, y + box_y + 1,
-	              x + box_x + 1);
+		      x + box_x + 1);
 
 	keypad(list, TRUE);
 
 	/* draw a box around the list items */
 	draw_box(dialog, box_y, box_x, list_height + 2, list_width + 2,
-	         dlg.menubox_border.atr, dlg.menubox.atr);
+		 dlg.menubox_border.atr, dlg.menubox.atr);
 
 	/* Find length of longest item in order to center checklist */
 	check_x = 0;
diff --git a/kconfig/lxdialog/dialog.h b/kconfig/lxdialog/dialog.h
index b5211fce..fcffd5b4 100644
--- a/kconfig/lxdialog/dialog.h
+++ b/kconfig/lxdialog/dialog.h
@@ -106,8 +106,14 @@ struct dialog_color {
 	int hl;		/* highlight this item */
 };
 
+struct subtitle_list {
+	struct subtitle_list *next;
+	const char *text;
+};
+
 struct dialog_info {
 	const char *backtitle;
+	struct subtitle_list *subtitles;
 	struct dialog_color screen;
 	struct dialog_color shadow;
 	struct dialog_color dialog;
@@ -144,6 +150,7 @@ struct dialog_info {
  */
 extern struct dialog_info dlg;
 extern char dialog_input_result[];
+extern int saved_x, saved_y;		/* Needed in signal handler in mconf.c */
 
 /*
  * Function prototypes
@@ -163,7 +170,7 @@ char item_tag(void);
 /* item list manipulation for lxdialog use */
 #define MAXITEMSTR 200
 struct dialog_item {
-	char str[MAXITEMSTR];	/* promtp displayed */
+	char str[MAXITEMSTR];	/* prompt displayed */
 	char tag;
 	void *data;	/* pointer to menu item - used by menubox+checklist */
 	int selected;	/* Set to 1 by dialog_*() function if selected. */
@@ -193,8 +200,23 @@ int item_is_tag(char tag);
 int on_key_esc(WINDOW *win);
 int on_key_resize(void);
 
+/* minimum (re)size values */
+#define CHECKLIST_HEIGTH_MIN 6	/* For dialog_checklist() */
+#define CHECKLIST_WIDTH_MIN 6
+#define INPUTBOX_HEIGTH_MIN 2	/* For dialog_inputbox() */
+#define INPUTBOX_WIDTH_MIN 2
+#define MENUBOX_HEIGTH_MIN 15	/* For dialog_menu() */
+#define MENUBOX_WIDTH_MIN 65
+#define TEXTBOX_HEIGTH_MIN 8	/* For dialog_textbox() */
+#define TEXTBOX_WIDTH_MIN 8
+#define YESNO_HEIGTH_MIN 4	/* For dialog_yesno() */
+#define YESNO_WIDTH_MIN 4
+#define WINDOW_HEIGTH_MIN 19	/* For init_dialog() */
+#define WINDOW_WIDTH_MIN 80
+
 int init_dialog(const char *backtitle);
 void set_dialog_backtitle(const char *backtitle);
+void set_dialog_subtitles(struct subtitle_list *subtitles);
 void end_dialog(int x, int y);
 void attr_clear(WINDOW * win, int height, int width, chtype attr);
 void dialog_clear(void);
@@ -209,12 +231,17 @@ int first_alpha(const char *string, const char *exempt);
 int dialog_yesno(const char *title, const char *prompt, int height, int width);
 int dialog_msgbox(const char *title, const char *prompt, int height,
 		  int width, int pause);
-int dialog_textbox(const char *title, const char *file, int height, int width);
+
+
+typedef void (*update_text_fn)(char *buf, size_t start, size_t end, void
+			       *_data);
+int dialog_textbox(const char *title, char *tbuf, int initial_height,
+		   int initial_width, int *keys, int *_vscroll, int *_hscroll,
+		   update_text_fn update_text, void *data);
 int dialog_menu(const char *title, const char *prompt,
 		const void *selected, int *s_scroll);
 int dialog_checklist(const char *title, const char *prompt, int height,
 		     int width, int list_height);
-extern char dialog_input_result[];
 int dialog_inputbox(const char *title, const char *prompt, int height,
 		    int width, const char *init);
 
diff --git a/kconfig/lxdialog/inputbox.c b/kconfig/lxdialog/inputbox.c
index dd8e587c..d58de1dc 100644
--- a/kconfig/lxdialog/inputbox.c
+++ b/kconfig/lxdialog/inputbox.c
@@ -42,10 +42,11 @@ static void print_buttons(WINDOW * dialog, int height, int width, int selected)
  * Display a dialog box for inputing a string
  */
 int dialog_inputbox(const char *title, const char *prompt, int height, int width,
-                    const char *init)
+		    const char *init)
 {
 	int i, x, y, box_y, box_x, box_width;
-	int input_x = 0, scroll = 0, key = 0, button = -1;
+	int input_x = 0, key = 0, button = -1;
+	int show_x, len, pos;
 	char *instr = dialog_input_result;
 	WINDOW *dialog;
 
@@ -55,14 +56,14 @@ int dialog_inputbox(const char *title, const char *prompt, int height, int width
 		strcpy(instr, init);
 
 do_resize:
-	if (getmaxy(stdscr) <= (height - 2))
+	if (getmaxy(stdscr) <= (height - INPUTBOX_HEIGTH_MIN))
 		return -ERRDISPLAYTOOSMALL;
-	if (getmaxx(stdscr) <= (width - 2))
+	if (getmaxx(stdscr) <= (width - INPUTBOX_WIDTH_MIN))
 		return -ERRDISPLAYTOOSMALL;
 
 	/* center dialog box on screen */
-	x = (COLS - width) / 2;
-	y = (LINES - height) / 2;
+	x = (getmaxx(stdscr) - width) / 2;
+	y = (getmaxy(stdscr) - height) / 2;
 
 	draw_shadow(stdscr, y, x, height, width);
 
@@ -97,14 +98,17 @@ do_resize:
 	wmove(dialog, box_y, box_x);
 	wattrset(dialog, dlg.inputbox.atr);
 
-	input_x = strlen(instr);
+	len = strlen(instr);
+	pos = len;
 
-	if (input_x >= box_width) {
-		scroll = input_x - box_width + 1;
+	if (len >= box_width) {
+		show_x = len - box_width + 1;
 		input_x = box_width - 1;
 		for (i = 0; i < box_width - 1; i++)
-			waddch(dialog, instr[scroll + i]);
+			waddch(dialog, instr[show_x + i]);
 	} else {
+		show_x = 0;
+		input_x = len;
 		waddstr(dialog, instr);
 	}
 
@@ -121,45 +125,104 @@ do_resize:
 			case KEY_UP:
 			case KEY_DOWN:
 				break;
-			case KEY_LEFT:
-				continue;
-			case KEY_RIGHT:
-				continue;
 			case KEY_BACKSPACE:
 			case 127:
-				if (input_x || scroll) {
+				if (pos) {
 					wattrset(dialog, dlg.inputbox.atr);
-					if (!input_x) {
-						scroll = scroll < box_width - 1 ? 0 : scroll - (box_width - 1);
-						wmove(dialog, box_y, box_x);
-						for (i = 0; i < box_width; i++)
-							waddch(dialog,
-							       instr[scroll + input_x + i] ?
-							       instr[scroll + input_x + i] : ' ');
-						input_x = strlen(instr) - scroll;
+					if (input_x == 0) {
+						show_x--;
 					} else
 						input_x--;
-					instr[scroll + input_x] = '\0';
-					mvwaddch(dialog, box_y, input_x + box_x, ' ');
+
+					if (pos < len) {
+						for (i = pos - 1; i < len; i++) {
+							instr[i] = instr[i+1];
+						}
+					}
+
+					pos--;
+					len--;
+					instr[len] = '\0';
+					wmove(dialog, box_y, box_x);
+					for (i = 0; i < box_width; i++) {
+						if (!instr[show_x + i]) {
+							waddch(dialog, ' ');
+							break;
+						}
+						waddch(dialog, instr[show_x + i]);
+					}
 					wmove(dialog, box_y, input_x + box_x);
 					wrefresh(dialog);
 				}
 				continue;
+			case KEY_LEFT:
+				if (pos > 0) {
+					if (input_x > 0) {
+						wmove(dialog, box_y, --input_x + box_x);
+					} else if (input_x == 0) {
+						show_x--;
+						wmove(dialog, box_y, box_x);
+						for (i = 0; i < box_width; i++) {
+							if (!instr[show_x + i]) {
+								waddch(dialog, ' ');
+								break;
+							}
+							waddch(dialog, instr[show_x + i]);
+						}
+						wmove(dialog, box_y, box_x);
+					}
+					pos--;
+				}
+				continue;
+			case KEY_RIGHT:
+				if (pos < len) {
+					if (input_x < box_width - 1) {
+						wmove(dialog, box_y, ++input_x + box_x);
+					} else if (input_x == box_width - 1) {
+						show_x++;
+						wmove(dialog, box_y, box_x);
+						for (i = 0; i < box_width; i++) {
+							if (!instr[show_x + i]) {
+								waddch(dialog, ' ');
+								break;
+							}
+							waddch(dialog, instr[show_x + i]);
+						}
+						wmove(dialog, box_y, input_x + box_x);
+					}
+					pos++;
+				}
+				continue;
 			default:
 				if (key < 0x100 && isprint(key)) {
-					if (scroll + input_x < MAX_LEN) {
+					if (len < MAX_LEN) {
 						wattrset(dialog, dlg.inputbox.atr);
-						instr[scroll + input_x] = key;
-						instr[scroll + input_x + 1] = '\0';
+						if (pos < len) {
+							for (i = len; i > pos; i--)
+								instr[i] = instr[i-1];
+							instr[pos] = key;
+						} else {
+							instr[len] = key;
+						}
+						pos++;
+						len++;
+						instr[len] = '\0';
+
 						if (input_x == box_width - 1) {
-							scroll++;
-							wmove(dialog, box_y, box_x);
-							for (i = 0; i < box_width - 1; i++)
-								waddch(dialog, instr [scroll + i]);
+							show_x++;
 						} else {
-							wmove(dialog, box_y, input_x++ + box_x);
-							waddch(dialog, key);
+							input_x++;
+						}
+
+						wmove(dialog, box_y, box_x);
+						for (i = 0; i < box_width; i++) {
+							if (!instr[show_x + i]) {
+								waddch(dialog, ' ');
+								break;
+							}
+							waddch(dialog, instr[show_x + i]);
 						}
+						wmove(dialog, box_y, input_x + box_x);
 						wrefresh(dialog);
 					} else
 						flash();	/* Alarm user about overflow */
diff --git a/kconfig/lxdialog/menubox.c b/kconfig/lxdialog/menubox.c
index 1d604738..11ae9ad7 100644
--- a/kconfig/lxdialog/menubox.c
+++ b/kconfig/lxdialog/menubox.c
@@ -26,7 +26,7 @@
  *
  *    *)  A bugfix for the Page-Down problem
  *
- *    *)  Formerly when I used Page Down and Page Up, the cursor would be set 
+ *    *)  Formerly when I used Page Down and Page Up, the cursor would be set
  *        to the first position in the menu box.  Now lxdialog is a bit
  *        smarter and works more like other menu systems (just have a look at
  *        it).
@@ -64,7 +64,7 @@ static int menu_width, item_x;
  * Print menu item
  */
 static void do_print_item(WINDOW * win, const char *item, int line_y,
-                          int selected, int hotkey)
+			  int selected, int hotkey)
 {
 	int j;
 	char *menu_item = malloc(menu_width + 1);
@@ -154,12 +154,14 @@ static void print_arrows(WINDOW * win, int item_no, int scroll, int y, int x,
  */
 static void print_buttons(WINDOW * win, int height, int width, int selected)
 {
-	int x = width / 2 - 16;
+	int x = width / 2 - 28;
 	int y = height - 2;
 
 	print_button(win, gettext("Select"), y, x, selected == 0);
 	print_button(win, gettext(" Exit "), y, x + 12, selected == 1);
 	print_button(win, gettext(" Help "), y, x + 24, selected == 2);
+	print_button(win, gettext(" Save "), y, x + 36, selected == 3);
+	print_button(win, gettext(" Load "), y, x + 48, selected == 4);
 
 	wmove(win, y, x + 1 + 12 * selected);
 	wrefresh(win);
@@ -180,7 +182,7 @@ static void do_scroll(WINDOW *win, int *scroll, int n)
  * Display a menu for choosing among a number of options
  */
 int dialog_menu(const char *title, const char *prompt,
-                const void *selected, int *s_scroll)
+		const void *selected, int *s_scroll)
 {
 	int i, j, x, y, box_x, box_y;
 	int height, width, menu_height;
@@ -191,7 +193,7 @@ int dialog_menu(const char *title, const char *prompt,
 do_resize:
 	height = getmaxy(stdscr);
 	width = getmaxx(stdscr);
-	if (height < 15 || width < 65)
+	if (height < MENUBOX_HEIGTH_MIN || width < MENUBOX_WIDTH_MIN)
 		return -ERRDISPLAYTOOSMALL;
 
 	height -= 4;
@@ -201,8 +203,8 @@ do_resize:
 	max_choice = MIN(menu_height, item_count());
 
 	/* center dialog box on screen */
-	x = (COLS - width) / 2;
-	y = (LINES - height) / 2;
+	x = (getmaxx(stdscr) - width) / 2;
+	y = (getmaxy(stdscr) - height) / 2;
 
 	draw_shadow(stdscr, y, x, height, width);
 
@@ -301,10 +303,11 @@ do_resize:
 				}
 		}
 
-		if (i < max_choice ||
-		    key == KEY_UP || key == KEY_DOWN ||
-		    key == '-' || key == '+' ||
-		    key == KEY_PPAGE || key == KEY_NPAGE) {
+		if (item_count() != 0 &&
+		    (i < max_choice ||
+		     key == KEY_UP || key == KEY_DOWN ||
+		     key == '-' || key == '+' ||
+		     key == KEY_PPAGE || key == KEY_NPAGE)) {
 			/* Remove highligt of current item */
 			print_item(scroll + choice, choice, FALSE);
 
@@ -372,7 +375,7 @@ do_resize:
 		case TAB:
 		case KEY_RIGHT:
 			button = ((key == KEY_LEFT ? --button : ++button) < 0)
-			    ? 2 : (button > 2 ? 0 : button);
+			    ? 4 : (button > 4 ? 0 : button);
 
 			print_buttons(dialog, height, width, button);
 			wrefresh(menu);
@@ -399,17 +402,17 @@ do_resize:
 				return 2;
 			case 's':
 			case 'y':
-				return 3;
+				return 5;
 			case 'n':
-				return 4;
+				return 6;
 			case 'm':
-				return 5;
+				return 7;
 			case ' ':
-				return 6;
+				return 8;
 			case '/':
-				return 7;
+				return 9;
 			case 'z':
-				return 8;
+				return 10;
 			case '\n':
 				return button;
 			}
diff --git a/kconfig/lxdialog/textbox.c b/kconfig/lxdialog/textbox.c
index c704712d..1773319b 100644
--- a/kconfig/lxdialog/textbox.c
+++ b/kconfig/lxdialog/textbox.c
@@ -22,23 +22,25 @@
 #include "dialog.h"
 
 static void back_lines(int n);
-static void print_page(WINDOW * win, int height, int width);
-static void print_line(WINDOW * win, int row, int width);
+static void print_page(WINDOW *win, int height, int width, update_text_fn
+		       update_text, void *data);
+static void print_line(WINDOW *win, int row, int width);
 static char *get_line(void);
 static void print_position(WINDOW * win);
 
 static int hscroll;
 static int begin_reached, end_reached, page_length;
-static const char *buf;
-static const char *page;
+static char *buf;
+static char *page;
 
 /*
  * refresh window content
  */
 static void refresh_text_box(WINDOW *dialog, WINDOW *box, int boxh, int boxw,
-							  int cur_y, int cur_x)
+			     int cur_y, int cur_x, update_text_fn update_text,
+			     void *data)
 {
-	print_page(box, boxh, boxw);
+	print_page(box, boxh, boxw, update_text, data);
 	print_position(dialog);
 	wmove(dialog, cur_y, cur_x);	/* Restore cursor position */
 	wrefresh(dialog);
@@ -47,14 +49,18 @@ static void refresh_text_box(WINDOW *dialog, WINDOW *box, int boxh, int boxw,
 
 /*
  * Display text from a file in a dialog box.
+ *
+ * keys is a null-terminated array
+ * update_text() may not add or remove any '\n' or '\0' in tbuf
  */
-int dialog_textbox(const char *title, const char *tbuf,
-		   int initial_height, int initial_width)
+int dialog_textbox(const char *title, char *tbuf, int initial_height,
+		   int initial_width, int *keys, int *_vscroll, int *_hscroll,
+		   update_text_fn update_text, void *data)
 {
 	int i, x, y, cur_x, cur_y, key = 0;
 	int height, width, boxh, boxw;
-	int passed_end;
 	WINDOW *dialog, *box;
+	bool done = false;
 
 	begin_reached = 1;
 	end_reached = 0;
@@ -63,9 +69,18 @@ int dialog_textbox(const char *title, const char *tbuf,
 	buf = tbuf;
 	page = buf;	/* page is pointer to start of page to be displayed */
 
+	if (_vscroll && *_vscroll) {
+		begin_reached = 0;
+
+		for (i = 0; i < *_vscroll; i++)
+			get_line();
+	}
+	if (_hscroll)
+		hscroll = *_hscroll;
+
 do_resize:
 	getmaxyx(stdscr, height, width);
-	if (height < 8 || width < 8)
+	if (height < TEXTBOX_HEIGTH_MIN || width < TEXTBOX_WIDTH_MIN)
 		return -ERRDISPLAYTOOSMALL;
 	if (initial_height != 0)
 		height = initial_height;
@@ -83,8 +98,8 @@ do_resize:
 			width = 0;
 
 	/* center dialog box on screen */
-	x = (COLS - width) / 2;
-	y = (LINES - height) / 2;
+	x = (getmaxx(stdscr) - width) / 2;
+	y = (getmaxy(stdscr) - height) / 2;
 
 	draw_shadow(stdscr, y, x, height, width);
 
@@ -120,25 +135,28 @@ do_resize:
 
 	/* Print first page of text */
 	attr_clear(box, boxh, boxw, dlg.dialog.atr);
-	refresh_text_box(dialog, box, boxh, boxw, cur_y, cur_x);
+	refresh_text_box(dialog, box, boxh, boxw, cur_y, cur_x, update_text,
+			 data);
 
-	while ((key != KEY_ESC) && (key != '\n')) {
+	while (!done) {
 		key = wgetch(dialog);
 		switch (key) {
 		case 'E':	/* Exit */
 		case 'e':
 		case 'X':
 		case 'x':
-			delwin(box);
-			delwin(dialog);
-			return 0;
+		case 'q':
+		case '\n':
+			done = true;
+			break;
 		case 'g':	/* First page */
 		case KEY_HOME:
 			if (!begin_reached) {
 				begin_reached = 1;
 				page = buf;
 				refresh_text_box(dialog, box, boxh, boxw,
-						 cur_y, cur_x);
+						 cur_y, cur_x, update_text,
+						 data);
 			}
 			break;
 		case 'G':	/* Last page */
@@ -148,78 +166,48 @@ do_resize:
 			/* point to last char in buf */
 			page = buf + strlen(buf);
 			back_lines(boxh);
-			refresh_text_box(dialog, box, boxh, boxw,
-					 cur_y, cur_x);
+			refresh_text_box(dialog, box, boxh, boxw, cur_y,
+					 cur_x, update_text, data);
 			break;
 		case 'K':	/* Previous line */
 		case 'k':
 		case KEY_UP:
-			if (!begin_reached) {
-				back_lines(page_length + 1);
-
-				/* We don't call print_page() here but use
-				 * scrolling to ensure faster screen update.
-				 * However, 'end_reached' and 'page_length'
-				 * should still be updated, and 'page' should
-				 * point to start of next page. This is done
-				 * by calling get_line() in the following
-				 * 'for' loop. */
-				scrollok(box, TRUE);
-				wscrl(box, -1);	/* Scroll box region down one line */
-				scrollok(box, FALSE);
-				page_length = 0;
-				passed_end = 0;
-				for (i = 0; i < boxh; i++) {
-					if (!i) {
-						/* print first line of page */
-						print_line(box, 0, boxw);
-						wnoutrefresh(box);
-					} else
-						/* Called to update 'end_reached' and 'page' */
-						get_line();
-					if (!passed_end)
-						page_length++;
-					if (end_reached && !passed_end)
-						passed_end = 1;
-				}
+			if (begin_reached)
+				break;
 
-				print_position(dialog);
-				wmove(dialog, cur_y, cur_x);	/* Restore cursor position */
-				wrefresh(dialog);
-			}
+			back_lines(page_length + 1);
+			refresh_text_box(dialog, box, boxh, boxw, cur_y,
+					 cur_x, update_text, data);
 			break;
 		case 'B':	/* Previous page */
 		case 'b':
+		case 'u':
 		case KEY_PPAGE:
 			if (begin_reached)
 				break;
 			back_lines(page_length + boxh);
-			refresh_text_box(dialog, box, boxh, boxw,
-					 cur_y, cur_x);
+			refresh_text_box(dialog, box, boxh, boxw, cur_y,
+					 cur_x, update_text, data);
 			break;
 		case 'J':	/* Next line */
 		case 'j':
 		case KEY_DOWN:
-			if (!end_reached) {
-				begin_reached = 0;
-				scrollok(box, TRUE);
-				scroll(box);	/* Scroll box region up one line */
-				scrollok(box, FALSE);
-				print_line(box, boxh - 1, boxw);
-				wnoutrefresh(box);
-				print_position(dialog);
-				wmove(dialog, cur_y, cur_x);	/* Restore cursor position */
-				wrefresh(dialog);
-			}
+			if (end_reached)
+				break;
+
+			back_lines(page_length - 1);
+			refresh_text_box(dialog, box, boxh, boxw, cur_y,
+					 cur_x, update_text, data);
 			break;
 		case KEY_NPAGE:	/* Next page */
 		case ' ':
+		case 'd':
 			if (end_reached)
 				break;
 
 			begin_reached = 0;
-			refresh_text_box(dialog, box, boxh, boxw,
-					 cur_y, cur_x);
+			refresh_text_box(dialog, box, boxh, boxw, cur_y,
+					 cur_x, update_text, data);
 			break;
 		case '0':	/* Beginning of line */
 		case 'H':	/* Scroll left */
@@ -234,8 +222,8 @@ do_resize:
 				hscroll--;
 			/* Reprint current page to scroll horizontally */
 			back_lines(page_length);
-			refresh_text_box(dialog, box, boxh, boxw,
-					 cur_y, cur_x);
+			refresh_text_box(dialog, box, boxh, boxw, cur_y,
+					 cur_x, update_text, data);
 			break;
 		case 'L':	/* Scroll right */
 		case 'l':
@@ -245,11 +233,12 @@ do_resize:
 			hscroll++;
 			/* Reprint current page to scroll horizontally */
 			back_lines(page_length);
-			refresh_text_box(dialog, box, boxh, boxw,
-					 cur_y, cur_x);
+			refresh_text_box(dialog, box, boxh, boxw, cur_y,
+					 cur_x, update_text, data);
 			break;
 		case KEY_ESC:
-			key = on_key_esc(dialog);
+			if (on_key_esc(dialog) == KEY_ESC)
+				done = true;
 			break;
 		case KEY_RESIZE:
 			back_lines(height);
@@ -257,11 +246,31 @@ do_resize:
 			delwin(dialog);
 			on_key_resize();
 			goto do_resize;
+		default:
+			for (i = 0; keys[i]; i++) {
+				if (key == keys[i]) {
+					done = true;
+					break;
+				}
+			}
 		}
 	}
 	delwin(box);
 	delwin(dialog);
-	return key;		/* ESC pressed */
+	if (_vscroll) {
+		const char *s;
+
+		s = buf;
+		*_vscroll = 0;
+		back_lines(page_length);
+		while (s < page && (s = strchr(s, '\n'))) {
+			(*_vscroll)++;
+			s++;
+		}
+	}
+	if (_hscroll)
+		*_hscroll = hscroll;
+	return key;
 }
 
 /*
@@ -298,12 +307,23 @@ static void back_lines(int n)
 }
 
 /*
- * Print a new page of text. Called by dialog_textbox().
+ * Print a new page of text.
  */
-static void print_page(WINDOW * win, int height, int width)
+static void print_page(WINDOW *win, int height, int width, update_text_fn
+		       update_text, void *data)
 {
 	int i, passed_end = 0;
 
+	if (update_text) {
+		char *end;
+
+		for (i = 0; i < height; i++)
+			get_line();
+		end = page;
+		back_lines(height);
+		update_text(buf, page - buf, end - buf, data);
+	}
+
 	page_length = 0;
 	for (i = 0; i < height; i++) {
 		print_line(win, i, width);
@@ -316,11 +336,10 @@ static void print_page(WINDOW * win, int height, int width)
 }
 
 /*
- * Print a new line of text. Called by dialog_textbox() and print_page().
+ * Print a new line of text.
  */
 static void print_line(WINDOW * win, int row, int width)
 {
-	int y, x;
 	char *line;
 
 	line = get_line();
@@ -329,10 +348,10 @@ static void print_line(WINDOW * win, int row, int width)
 	waddch(win, ' ');
 	waddnstr(win, line, MIN(strlen(line), width - 2));
 
-	getyx(win, y, x);
 	/* Clear 'residue' of previous line */
 #if OLD_NCURSES
 	{
+		int x = getcurx(win);
 		int i;
 		for (i = 0; i < width - x; i++)
 			waddch(win, ' ');
@@ -355,10 +374,8 @@ static char *get_line(void)
 	end_reached = 0;
 	while (*page != '\n') {
 		if (*page == '\0') {
-			if (!end_reached) {
-				end_reached = 1;
-				break;
-			}
+			end_reached = 1;
+			break;
 		} else if (i < MAX_LEN)
 			line[i++] = *(page++);
 		else {
@@ -371,7 +388,7 @@ static char *get_line(void)
 	if (i <= MAX_LEN)
 		line[i] = '\0';
 	if (!end_reached)
-		page++;		/* move pass '\n' */
+		page++;		/* move past '\n' */
 
 	return line;
 }
diff --git a/kconfig/lxdialog/util.c b/kconfig/lxdialog/util.c
index f2375ad7..f7abdeb9 100644
--- a/kconfig/lxdialog/util.c
+++ b/kconfig/lxdialog/util.c
@@ -23,6 +23,9 @@
 
 #include "dialog.h"
 
+/* Needed in signal handler in mconf.c */
+int saved_x, saved_y;
+
 struct dialog_info dlg;
 
 static void set_mono_theme(void)
@@ -251,15 +254,56 @@ void attr_clear(WINDOW * win, int height, int width, chtype attr)
 
 void dialog_clear(void)
 {
-	attr_clear(stdscr, LINES, COLS, dlg.screen.atr);
+	int lines, columns;
+
+	lines = getmaxy(stdscr);
+	columns = getmaxx(stdscr);
+
+	attr_clear(stdscr, lines, columns, dlg.screen.atr);
 	/* Display background title if it exists ... - SLH */
 	if (dlg.backtitle != NULL) {
-		int i;
+		int i, len = 0, skip = 0;
+		struct subtitle_list *pos;
 
 		wattrset(stdscr, dlg.screen.atr);
 		mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle);
+
+		for (pos = dlg.subtitles; pos != NULL; pos = pos->next) {
+			/* 3 is for the arrow and spaces */
+			len += strlen(pos->text) + 3;
+		}
+
 		wmove(stdscr, 1, 1);
-		for (i = 1; i < COLS - 1; i++)
+		if (len > columns - 2) {
+			const char *ellipsis = "[...] ";
+			waddstr(stdscr, ellipsis);
+			skip = len - (columns - 2 - strlen(ellipsis));
+		}
+
+		for (pos = dlg.subtitles; pos != NULL; pos = pos->next) {
+			if (skip == 0)
+				waddch(stdscr, ACS_RARROW);
+			else
+				skip--;
+
+			if (skip == 0)
+				waddch(stdscr, ' ');
+			else
+				skip--;
+
+			if (skip < strlen(pos->text)) {
+				waddstr(stdscr, pos->text + skip);
+				skip = 0;
+			} else
+				skip -= strlen(pos->text);
+
+			if (skip == 0)
+				waddch(stdscr, ' ');
+			else
+				skip--;
+		}
+
+		for (i = len + 1; i < columns - 1; i++)
 			waddch(stdscr, ACS_HLINE);
 	}
 	wnoutrefresh(stdscr);
@@ -273,8 +317,12 @@ int init_dialog(const char *backtitle)
 	int height, width;
 
 	initscr();		/* Init curses */
+
+	/* Get current cursor position for signal handler in mconf.c */
+	getyx(stdscr, saved_y, saved_x);
+
 	getmaxyx(stdscr, height, width);
-	if (height < 19 || width < 80) {
+	if (height < WINDOW_HEIGTH_MIN || width < WINDOW_WIDTH_MIN) {
 		endwin();
 		return -ERRDISPLAYTOOSMALL;
 	}
@@ -295,6 +343,11 @@ void set_dialog_backtitle(const char *backtitle)
 	dlg.backtitle = backtitle;
 }
 
+void set_dialog_subtitles(struct subtitle_list *subtitles)
+{
+	dlg.subtitles = subtitles;
+}
+
 /*
  * End using dialog functions.
  */
@@ -323,27 +376,19 @@ void print_title(WINDOW *dialog, const char *title, int width)
 /*
  * Print a string of text in a window, automatically wrap around to the
  * next line if the string is too long to fit on one line. Newline
- * characters '\n' are replaced by spaces.  We start on a new line
+ * characters '\n' are propperly processed.  We start on a new line
  * if there is no room for at least 4 nonblanks following a double-space.
  */
 void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x)
 {
 	int newl, cur_x, cur_y;
-	int i, prompt_len, room, wlen;
-	char tempstr[MAX_LEN + 1], *word, *sp, *sp2;
+	int prompt_len, room, wlen;
+	char tempstr[MAX_LEN + 1], *word, *sp, *sp2, *newline_separator = 0;
 
 	strcpy(tempstr, prompt);
 
 	prompt_len = strlen(tempstr);
 
-	/*
-	 * Remove newlines
-	 */
-	for (i = 0; i < prompt_len; i++) {
-		if (tempstr[i] == '\n')
-			tempstr[i] = ' ';
-	}
-
 	if (prompt_len <= width - x * 2) {	/* If prompt is short */
 		wmove(win, y, (width - prompt_len) / 2);
 		waddstr(win, tempstr);
@@ -353,7 +398,10 @@ void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x)
 		newl = 1;
 		word = tempstr;
 		while (word && *word) {
-			sp = strchr(word, ' ');
+			sp = strpbrk(word, "\n ");
+			if (sp && *sp == '\n')
+				newline_separator = sp;
+
 			if (sp)
 				*sp++ = 0;
 
@@ -365,7 +413,7 @@ void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x)
 			if (wlen > room ||
 			    (newl && wlen < 4 && sp
 			     && wlen + 1 + strlen(sp) > room
-			     && (!(sp2 = strchr(sp, ' '))
+			     && (!(sp2 = strpbrk(sp, "\n "))
 				 || wlen + 1 + (sp2 - sp) > room))) {
 				cur_y++;
 				cur_x = x;
@@ -373,7 +421,15 @@ void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x)
 			wmove(win, cur_y, cur_x);
 			waddstr(win, word);
 			getyx(win, cur_y, cur_x);
-			cur_x++;
+
+			/* Move to the next line if the word separator was a newline */
+			if (newline_separator) {
+				cur_y++;
+				cur_x = x;
+				newline_separator = 0;
+			} else
+				cur_x++;
+
 			if (sp && *sp == ' ') {
 				cur_x++;	/* double space */
 				while (*++sp == ' ') ;
@@ -567,7 +623,7 @@ void item_make(const char *fmt, ...)
 void item_add_str(const char *fmt, ...)
 {
 	va_list ap;
-        size_t avail;
+	size_t avail;
 
 	avail = sizeof(item_cur->node.str) - strlen(item_cur->node.str);
 
diff --git a/kconfig/lxdialog/yesno.c b/kconfig/lxdialog/yesno.c
index 4e6e8090..676fb2f8 100644
--- a/kconfig/lxdialog/yesno.c
+++ b/kconfig/lxdialog/yesno.c
@@ -45,14 +45,14 @@ int dialog_yesno(const char *title, const char *prompt, int height, int width)
 	WINDOW *dialog;
 
 do_resize:
-	if (getmaxy(stdscr) < (height + 4))
+	if (getmaxy(stdscr) < (height + YESNO_HEIGTH_MIN))
 		return -ERRDISPLAYTOOSMALL;
-	if (getmaxx(stdscr) < (width + 4))
+	if (getmaxx(stdscr) < (width + YESNO_WIDTH_MIN))
 		return -ERRDISPLAYTOOSMALL;
 
 	/* center dialog box on screen */
-	x = (COLS - width) / 2;
-	y = (LINES - height) / 2;
+	x = (getmaxx(stdscr) - width) / 2;
+	y = (getmaxy(stdscr) - height) / 2;
 
 	draw_shadow(stdscr, y, x, height, width);
 
diff --git a/kconfig/mconf.c b/kconfig/mconf.c
index 1f10bfe5..dc7421c2 100644
--- a/kconfig/mconf.c
+++ b/kconfig/mconf.c
@@ -15,17 +15,17 @@
 #include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>
+#include <signal.h>
 #include <unistd.h>
 #include <locale.h>
 
-#define LKC_DIRECT_LINK
 #include "lkc.h"
 #include "lxdialog/dialog.h"
 
 static const char mconf_readme[] = N_(
 "Overview\n"
 "--------\n"
-"This interface let you select features and parameters for the build.\n"
+"This interface lets you select features and parameters for the build.\n"
 "Features can either be built-in, modularized, or ignored. Parameters\n"
 "must be entered in as decimal or hexadecimal numbers or text.\n"
 "\n"
@@ -39,16 +39,16 @@ static const char mconf_readme[] = N_(
 "\n"
 "To change any of these features, highlight it with the cursor\n"
 "keys and press <Y> to build it in, <M> to make it a module or\n"
-"<N> to removed it.  You may also press the <Space Bar> to cycle\n"
-"through the available options (ie. Y->N->M->Y).\n"
+"<N> to remove it.  You may also press the <Space Bar> to cycle\n"
+"through the available options (i.e. Y->N->M->Y).\n"
 "\n"
 "Some additional keyboard hints:\n"
 "\n"
 "Menus\n"
 "----------\n"
-"o  Use the Up/Down arrow keys (cursor keys) to highlight the item\n"
-"   you wish to change or submenu wish to select and press <Enter>.\n"
-"   Submenus are designated by \"--->\".\n"
+"o  Use the Up/Down arrow keys (cursor keys) to highlight the item you\n"
+"   wish to change or the submenu you wish to select and press <Enter>.\n"
+"   Submenus are designated by \"--->\", empty ones by \"----\".\n"
 "\n"
 "   Shortcut: Press the option's highlighted letter (hotkey).\n"
 "             Pressing a hotkey more than once will sequence\n"
@@ -65,7 +65,7 @@ static const char mconf_readme[] = N_(
 "             there is a delayed response which you may find annoying.\n"
 "\n"
 "   Also, the <TAB> and cursor keys will cycle between <Select>,\n"
-"   <Exit> and <Help>.\n"
+"   <Exit>, <Help>, <Save>, and <Load>.\n"
 "\n"
 "o  To get help with an item, use the cursor keys to highlight <Help>\n"
 "   and press <ENTER>.\n"
@@ -105,10 +105,10 @@ static const char mconf_readme[] = N_(
 "Text Box    (Help Window)\n"
 "--------\n"
 "o  Use the cursor keys to scroll up/down/left/right.  The VI editor\n"
-"   keys h,j,k,l function here as do <SPACE BAR> and <B> for those\n"
-"   who are familiar with less and lynx.\n"
+"   keys h,j,k,l function here as do <u>, <d>, <SPACE BAR> and <B> for\n"
+"   those who are familiar with less and lynx.\n"
 "\n"
-"o  Press <E>, <X>, <Enter> or <Esc><Esc> to exit.\n"
+"o  Press <E>, <X>, <q>, <Enter> or <Esc><Esc> to exit.\n"
 "\n"
 "\n"
 "Alternate Configuration Files\n"
@@ -117,23 +117,21 @@ static const char mconf_readme[] = N_(
 "those who, for various reasons, find it necessary to switch\n"
 "between different configurations.\n"
 "\n"
-"At the end of the main menu you will find two options.  One is\n"
-"for saving the current configuration to a file of your choosing.\n"
-"The other option is for loading a previously saved alternate\n"
-"configuration.\n"
+"The <Save> button will let you save the current configuration to\n"
+"a file of your choosing.  Use the <Load> button to load a previously\n"
+"saved alternate configuration.\n"
 "\n"
-"Even if you don't use alternate configuration files, but you\n"
-"find during a Menuconfig session that you have completely messed\n"
-"up your settings, you may use the \"Load Alternate...\" option to\n"
-"restore your previously saved settings from \".config\" without\n"
-"restarting Menuconfig.\n"
+"Even if you don't use alternate configuration files, but you find\n"
+"during a Menuconfig session that you have completely messed up your\n"
+"settings, you may use the <Load> button to restore your previously\n"
+"saved settings from \".config\" without restarting Menuconfig.\n"
 "\n"
 "Other information\n"
 "-----------------\n"
-"If you use Menuconfig in an XTERM window make sure you have your\n"
-"$TERM variable set to point to a xterm definition which supports color.\n"
-"Otherwise, Menuconfig will look rather bad.  Menuconfig will not\n"
-"display correctly in a RXVT window because rxvt displays only one\n"
+"If you use Menuconfig in an XTERM window, make sure you have your\n"
+"$TERM variable set to point to an xterm definition which supports\n"
+"color.  Otherwise, Menuconfig will look rather bad.  Menuconfig will\n"
+"not display correctly in an RXVT window because rxvt displays only one\n"
 "intensity of color, bright.\n"
 "\n"
 "Menuconfig will display larger menus on screens or xterms which are\n"
@@ -148,8 +146,8 @@ static const char mconf_readme[] = N_(
 "\n"
 "Optional personality available\n"
 "------------------------------\n"
-"If you prefer to have all of the options listed in a single menu, rather\n"
-"than the default multimenu hierarchy, run the menuconfig with\n"
+"If you prefer to have all of the options listed in a single menu,\n"
+"rather than the default multimenu hierarchy, run the menuconfig with\n"
 "MENUCONFIG_MODE environment variable set to single_menu. Example:\n"
 "\n"
 "make MENUCONFIG_MODE=single_menu menuconfig\n"
@@ -172,11 +170,11 @@ static const char mconf_readme[] = N_(
 " mono       => selects colors suitable for monochrome displays\n"
 " blackbg    => selects a color scheme with black background\n"
 " classic    => theme with blue background. The classic look\n"
-" bluetitle  => a LCD friendly version of classic. (default)\n"
+" bluetitle  => an LCD friendly version of classic. (default)\n"
 "\n"),
 menu_instructions[] = N_(
 	"Arrow keys navigate the menu.  "
-	"<Enter> selects submenus --->.  "
+	"<Enter> selects submenus ---> (or empty submenus ----).  "
 	"Highlighted letters are hotkeys.  "
 	"Pressing <Y> includes, <N> excludes, <M> modularizes features.  "
 	"Press <Esc><Esc> to exit, <?> for Help, </> for Search.  "
@@ -236,29 +234,36 @@ search_help[] = N_(
 	"Result:\n"
 	"-----------------------------------------------------------------\n"
 	"Symbol: FOO [=m]\n"
+	"Type  : tristate\n"
 	"Prompt: Foo bus is used to drive the bar HW\n"
-	"Defined at drivers/pci/Kconfig:47\n"
-	"Depends on: X86_LOCAL_APIC && X86_IO_APIC || IA64\n"
-	"Location:\n"
-	"  -> Bus options (PCI, PCMCIA, EISA, MCA, ISA)\n"
-	"    -> PCI support (PCI [=y])\n"
-	"      -> PCI access mode (<choice> [=y])\n"
-	"Selects: LIBCRC32\n"
-	"Selected by: BAR\n"
+	"  Location:\n"
+	"    -> Bus options (PCI, PCMCIA, EISA, ISA)\n"
+	"      -> PCI support (PCI [=y])\n"
+	"(1)     -> PCI access mode (<choice> [=y])\n"
+	"  Defined at drivers/pci/Kconfig:47\n"
+	"  Depends on: X86_LOCAL_APIC && X86_IO_APIC || IA64\n"
+	"  Selects: LIBCRC32\n"
+	"  Selected by: BAR [=n]\n"
 	"-----------------------------------------------------------------\n"
+	"o The line 'Type:' shows the type of the configuration option for\n"
+	"  this symbol (boolean, tristate, string, ...)\n"
 	"o The line 'Prompt:' shows the text used in the menu structure for\n"
 	"  this symbol\n"
-	"o The 'Defined at' line tell at what file / line number the symbol\n"
+	"o The 'Defined at' line tells at what file / line number the symbol\n"
 	"  is defined\n"
-	"o The 'Depends on:' line tell what symbols needs to be defined for\n"
+	"o The 'Depends on:' line tells what symbols need to be defined for\n"
 	"  this symbol to be visible in the menu (selectable)\n"
-	"o The 'Location:' lines tell where in the menu structure this symbol\n"
+	"o The 'Location:' lines tells where in the menu structure this symbol\n"
 	"  is located\n"
-	"    A location followed by a [=y] indicate that this is a selectable\n"
-	"    menu item - and current value is displayed inside brackets.\n"
-	"o The 'Selects:' line tell what symbol will be automatically\n"
+	"    A location followed by a [=y] indicates that this is a\n"
+	"    selectable menu item - and the current value is displayed inside\n"
+	"    brackets.\n"
+	"    Press the key in the (#) prefix to jump directly to that\n"
+	"    location. You will be returned to the current search results\n"
+	"    after exiting this new menu.\n"
+	"o The 'Selects:' line tells what symbols will be automatically\n"
 	"  selected if this symbol is selected (y or m)\n"
-	"o The 'Selected by' line tell what symbol has selected this symbol\n"
+	"o The 'Selected by' line tells what symbol has selected this symbol\n"
 	"\n"
 	"Only relevant lines are shown.\n"
 	"\n\n"
@@ -273,12 +278,17 @@ static struct menu *current_menu;
 static int child_count;
 static int single_menu_mode;
 static int show_all_options;
+static int save_and_exit;
+static int silent;
 
-static void conf(struct menu *menu);
+static void conf(struct menu *menu, struct menu *active_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 int show_textbox_ext(const char *title, char *text, int r, int c,
+			    int *keys, int *vscroll, int *hscroll,
+			    update_text_fn update_text, void *data);
 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);
@@ -290,7 +300,7 @@ static void set_config_filename(const char *config_filename)
 	int size;
 
 	size = snprintf(menu_backtitle, sizeof(menu_backtitle),
-	                "%s - %s", config_filename, rootmenu.prompt->text);
+			"%s - %s", config_filename, rootmenu.prompt->text);
 	if (size >= sizeof(menu_backtitle))
 		menu_backtitle[sizeof(menu_backtitle)-1] = '\0';
 	set_dialog_backtitle(menu_backtitle);
@@ -300,18 +310,103 @@ static void set_config_filename(const char *config_filename)
 		filename[sizeof(filename)-1] = '\0';
 }
 
+struct subtitle_part {
+	struct list_head entries;
+	const char *text;
+};
+static LIST_HEAD(trail);
+
+static struct subtitle_list *subtitles;
+static void set_subtitle(void)
+{
+	struct subtitle_part *sp;
+	struct subtitle_list *pos, *tmp;
+
+	for (pos = subtitles; pos != NULL; pos = tmp) {
+		tmp = pos->next;
+		free(pos);
+	}
+
+	subtitles = NULL;
+	list_for_each_entry(sp, &trail, entries) {
+		if (sp->text) {
+			if (pos) {
+				pos->next = xcalloc(1, sizeof(*pos));
+				pos = pos->next;
+			} else {
+				subtitles = pos = xcalloc(1, sizeof(*pos));
+			}
+			pos->text = sp->text;
+		}
+	}
+
+	set_dialog_subtitles(subtitles);
+}
+
+static void reset_subtitle(void)
+{
+	struct subtitle_list *pos, *tmp;
+
+	for (pos = subtitles; pos != NULL; pos = tmp) {
+		tmp = pos->next;
+		free(pos);
+	}
+	subtitles = NULL;
+	set_dialog_subtitles(subtitles);
+}
+
+struct search_data {
+	struct list_head *head;
+	struct menu **targets;
+	int *keys;
+};
+
+static void update_text(char *buf, size_t start, size_t end, void *_data)
+{
+	struct search_data *data = _data;
+	struct jump_key *pos;
+	int k = 0;
+
+	list_for_each_entry(pos, data->head, entries) {
+		if (pos->offset >= start && pos->offset < end) {
+			char header[4];
+
+			if (k < JUMP_NB) {
+				int key = '0' + (pos->index % JUMP_NB) + 1;
+
+				sprintf(header, "(%c)", key);
+				data->keys[k] = key;
+				data->targets[k] = pos->target;
+				k++;
+			} else {
+				sprintf(header, "   ");
+			}
+
+			memcpy(buf + pos->offset, header, sizeof(header) - 1);
+		}
+	}
+	data->keys[k] = 0;
+}
 
 static void search_conf(void)
 {
 	struct symbol **sym_arr;
 	struct gstr res;
+	struct gstr title;
 	char *dialog_input;
-	int dres;
+	int dres, vscroll = 0, hscroll = 0;
+	bool again;
+	struct gstr sttext;
+	struct subtitle_part stpart;
+
+	title = str_new();
+	str_printf( &title, _("Enter (sub)string or regexp to search for "
+			      "(with or without \"%s\")"), CONFIG_);
+
 again:
 	dialog_clear();
 	dres = dialog_inputbox(_("Search Configuration Parameter"),
-			      _("Enter " CONFIG_ " (sub)string to search for "
-				"(with or without \"" CONFIG_ "\")"),
+			      str_get(&title),
 			      10, 75, "");
 	switch (dres) {
 	case 0:
@@ -320,6 +415,7 @@ again:
 		show_helptext(_("Search Configuration"), search_help);
 		goto again;
 	default:
+		str_free(&title);
 		return;
 	}
 
@@ -328,11 +424,43 @@ again:
 	if (strncasecmp(dialog_input_result, CONFIG_, strlen(CONFIG_)) == 0)
 		dialog_input += strlen(CONFIG_);
 
+	sttext = str_new();
+	str_printf(&sttext, "Search (%s)", dialog_input_result);
+	stpart.text = str_get(&sttext);
+	list_add_tail(&stpart.entries, &trail);
+
 	sym_arr = sym_re_search(dialog_input);
-	res = get_relations_str(sym_arr);
+	do {
+		LIST_HEAD(head);
+		struct menu *targets[JUMP_NB];
+		int keys[JUMP_NB + 1], i;
+		struct search_data data = {
+			.head = &head,
+			.targets = targets,
+			.keys = keys,
+		};
+		struct jump_key *pos, *tmp;
+
+		res = get_relations_str(sym_arr, &head);
+		set_subtitle();
+		dres = show_textbox_ext(_("Search Results"), (char *)
+					str_get(&res), 0, 0, keys, &vscroll,
+					&hscroll, &update_text, (void *)
+					&data);
+		again = false;
+		for (i = 0; i < JUMP_NB && keys[i]; i++)
+			if (dres == keys[i]) {
+				conf(targets[i]->parent, targets[i]);
+				again = true;
+			}
+		str_free(&res);
+		list_for_each_entry_safe(pos, tmp, &head, entries)
+			free(pos);
+	} while (again);
 	free(sym_arr);
-	show_textbox(_("Search Results"), str_get(&res), 0, 0);
-	str_free(&res);
+	str_free(&title);
+	list_del(trail.prev);
+	str_free(&sttext);
 }
 
 static void build_conf(struct menu *menu)
@@ -369,8 +497,9 @@ static void build_conf(struct menu *menu)
 						  menu->data ? "-->" : "++>",
 						  indent + 1, ' ', prompt);
 				} else
-					item_make("   %*c%s  --->", indent + 1, ' ', prompt);
-
+					item_make("   %*c%s  %s",
+						  indent + 1, ' ', prompt,
+						  menu_is_empty(menu) ? "----" : "--->");
 				item_set_tag('m');
 				item_set_data(menu);
 				if (single_menu_mode && menu->data)
@@ -501,7 +630,7 @@ static void build_conf(struct menu *menu)
 			  (sym_has_value(sym) || !sym_is_changable(sym)) ?
 			  "" : _(" (NEW)"));
 		if (menu->prompt->type == P_MENU) {
-			item_add_str("  --->");
+			item_add_str("  %s", menu_is_empty(menu) ? "----" : "--->");
 			return;
 		}
 	}
@@ -513,40 +642,40 @@ conf_childs:
 	indent -= doint;
 }
 
-static void conf(struct menu *menu)
+static void conf(struct menu *menu, struct menu *active_menu)
 {
 	struct menu *submenu;
 	const char *prompt = menu_get_prompt(menu);
+	struct subtitle_part stpart;
 	struct symbol *sym;
-	struct menu *active_menu = NULL;
 	int res;
 	int s_scroll = 0;
 
+	if (menu != &rootmenu)
+		stpart.text = menu_get_prompt(menu);
+	else
+		stpart.text = NULL;
+	list_add_tail(&stpart.entries, &trail);
+
 	while (1) {
 		item_reset();
 		current_menu = menu;
 		build_conf(menu);
 		if (!child_count)
 			break;
-		if (menu == &rootmenu) {
-			item_make("--- ");
-			item_set_tag(':');
-			item_make(_("    Load an Alternate Configuration File"));
-			item_set_tag('L');
-			item_make(_("    Save an Alternate Configuration File"));
-			item_set_tag('S');
-		}
+		set_subtitle();
 		dialog_clear();
 		res = dialog_menu(prompt ? _(prompt) : _("Main Menu"),
 				  _(menu_instructions),
 				  active_menu, &s_scroll);
 		if (res == 1 || res == KEY_ESC || res == -ERRDISPLAYTOOSMALL)
 			break;
-		if (!item_activate_selected())
-			continue;
-		if (!item_tag())
-			continue;
-
+		if (item_count() != 0) {
+			if (!item_activate_selected())
+				continue;
+			if (!item_tag())
+				continue;
+		}
 		submenu = item_data();
 		active_menu = item_data();
 		if (submenu)
@@ -561,32 +690,36 @@ static void conf(struct menu *menu)
 				if (single_menu_mode)
 					submenu->data = (void *) (long) !submenu->data;
 				else
-					conf(submenu);
+					conf(submenu, NULL);
 				break;
 			case 't':
 				if (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)
 					conf_choice(submenu);
 				else if (submenu->prompt->type == P_MENU)
-					conf(submenu);
+					conf(submenu, NULL);
 				break;
 			case 's':
 				conf_string(submenu);
 				break;
-			case 'L':
-				conf_load();
-				break;
-			case 'S':
-				conf_save();
-				break;
 			}
 			break;
 		case 2:
 			if (sym)
 				show_help(submenu);
-			else
+			else {
+				reset_subtitle();
 				show_helptext(_("README"), _(mconf_readme));
+			}
 			break;
 		case 3:
+			reset_subtitle();
+			conf_save();
+			break;
+		case 4:
+			reset_subtitle();
+			conf_load();
+			break;
+		case 5:
 			if (item_is_tag('t')) {
 				if (sym_set_tristate_value(sym, yes))
 					break;
@@ -594,34 +727,45 @@ static void conf(struct menu *menu)
 					show_textbox(NULL, setmod_text, 6, 74);
 			}
 			break;
-		case 4:
+		case 6:
 			if (item_is_tag('t'))
 				sym_set_tristate_value(sym, no);
 			break;
-		case 5:
+		case 7:
 			if (item_is_tag('t'))
 				sym_set_tristate_value(sym, mod);
 			break;
-		case 6:
+		case 8:
 			if (item_is_tag('t'))
 				sym_toggle_tristate_value(sym);
 			else if (item_is_tag('m'))
-				conf(submenu);
+				conf(submenu, NULL);
 			break;
-		case 7:
+		case 9:
 			search_conf();
 			break;
-		case 8:
+		case 10:
 			show_all_options = !show_all_options;
 			break;
 		}
 	}
+
+	list_del(trail.prev);
 }
 
-static void show_textbox(const char *title, const char *text, int r, int c)
+static int show_textbox_ext(const char *title, char *text, int r, int c, int
+			    *keys, int *vscroll, int *hscroll, update_text_fn
+			    update_text, void *data)
 {
 	dialog_clear();
-	dialog_textbox(title, text, r, c);
+	return dialog_textbox(title, text, r, c, keys, vscroll, hscroll,
+			      update_text, data);
+}
+
+static void show_textbox(const char *title, const char *text, int r, int c)
+{
+	show_textbox_ext(title, (char *) text, r, c, (int []) {0}, NULL, NULL,
+			 NULL, NULL);
 }
 
 static void show_helptext(const char *title, const char *text)
@@ -629,6 +773,19 @@ static void show_helptext(const char *title, const char *text)
 	show_textbox(title, text, 0, 0);
 }
 
+static void conf_message_callback(const char *fmt, va_list ap)
+{
+	char buf[PATH_MAX+1];
+
+	vsnprintf(buf, sizeof(buf), fmt, ap);
+	if (save_and_exit) {
+		if (!silent)
+			printf("%s", buf);
+	} else {
+		show_textbox(NULL, buf, 6, 60);
+	}
+}
+
 static void show_help(struct menu *menu)
 {
 	struct gstr help = str_new();
@@ -671,7 +828,9 @@ static void conf_choice(struct menu *menu)
 		dialog_clear();
 		res = dialog_checklist(prompt ? _(prompt) : _("Main Menu"),
 					_(radiolist_instructions),
-					 15, 70, 6);
+					MENUBOX_HEIGTH_MIN,
+					MENUBOX_WIDTH_MIN,
+					CHECKLIST_HEIGTH_MIN);
 		selected = item_activate_selected();
 		switch (res) {
 		case 0:
@@ -793,9 +952,60 @@ static void conf_save(void)
 	}
 }
 
+static int handle_exit(void)
+{
+	int res;
+
+	save_and_exit = 1;
+	reset_subtitle();
+	dialog_clear();
+	if (conf_get_changed())
+		res = dialog_yesno(NULL,
+				   _("Do you wish to save your new configuration?\n"
+				     "(Press <ESC><ESC> to continue Crosstool-NG configuration.)"),
+				   6, 60);
+	else
+		res = -1;
+
+	end_dialog(saved_x, saved_y);
+
+	switch (res) {
+	case 0:
+		if (conf_write(filename)) {
+			fprintf(stderr, _("\n\n"
+					  "Error while writing of the configuration.\n"
+					  "Your configuration changes were NOT saved."
+					  "\n\n"));
+			return 1;
+		}
+		/* fall through */
+	case -1:
+		if (!silent)
+			printf(_("\n\n"
+				 "*** End of the configuration.\n"
+				 "*** Execute 'ct-ng build' to start the build or try 'ct-ng help'."
+				 "\n\n"));
+		res = 0;
+		break;
+	default:
+		if (!silent)
+			fprintf(stderr, _("\n\n"
+					  "Your configuration changes were NOT saved."
+					  "\n\n"));
+		if (res != KEY_ESC)
+			res = 0;
+	}
+
+	return res;
+}
+
+static void sig_handler(int signo)
+{
+	exit(handle_exit());
+}
+
 int main(int ac, char **av)
 {
-	int saved_x, saved_y;
 	char *mode;
 	int res;
 
@@ -803,6 +1013,14 @@ int main(int ac, char **av)
 	bindtextdomain(PACKAGE, LOCALEDIR);
 	textdomain(PACKAGE);
 
+	signal(SIGINT, sig_handler);
+
+	if (ac > 1 && strcmp(av[1], "-s") == 0) {
+		silent = 1;
+		/* Silence conf_read() until the real callback is set up */
+		conf_set_message_callback(NULL);
+		av++;
+	}
 	conf_parse(av[1]);
 	conf_read(NULL);
 
@@ -812,9 +1030,6 @@ int main(int ac, char **av)
 			single_menu_mode = 1;
 	}
 
-	initscr();
-
-	getyx(stdscr, saved_y, saved_x);
 	if (init_dialog(NULL)) {
 		fprintf(stderr, N_("Your display is too small to run Menuconfig!\n"));
 		fprintf(stderr, N_("It must be at least 19 lines by 80 columns.\n"));
@@ -822,37 +1037,11 @@ int main(int ac, char **av)
 	}
 
 	set_config_filename(conf_get_configname());
+	conf_set_message_callback(conf_message_callback);
 	do {
-		conf(&rootmenu);
-		dialog_clear();
-		if (conf_get_changed())
-			res = dialog_yesno(NULL,
-					   _("Do you wish to save your "
-					     "new configuration?\n"
-					     "<ESC><ESC> to continue."),
-					   6, 60);
-		else
-			res = -1;
+		conf(&rootmenu, NULL);
+		res = handle_exit();
 	} while (res == KEY_ESC);
-	end_dialog(saved_x, saved_y);
 
-	switch (res) {
-	case 0:
-		if (conf_write(filename)) {
-			fprintf(stderr, _("\n\n"
-				"Error while writing of the configuration.\n"
-				"Your configuration changes were NOT saved."
-				"\n\n"));
-			return 1;
-		}
-	case -1:
-		break;
-	default:
-		fprintf(stderr, _("\n\n"
-			"Your configuration changes were NOT saved."
-			"\n\n"));
-	}
-
-	return 0;
+	return res;
 }
-
diff --git a/kconfig/menu.c b/kconfig/menu.c
index 791f6885..6a65271c 100644
--- a/kconfig/menu.c
+++ b/kconfig/menu.c
@@ -3,14 +3,14 @@
  * Released under the terms of the GNU GPL v2.0.
  */
 
+#include <ctype.h>
+#include <stdarg.h>
 #include <stdlib.h>
 #include <string.h>
 
-#define LKC_DIRECT_LINK
 #include "lkc.h"
 
-static const char nohelp_text[] = N_(
-	"There is no help available for this option.\n");
+static const char nohelp_text[] = "There is no help available for this option.";
 
 struct menu rootmenu;
 static struct menu **last_entry_ptr;
@@ -48,7 +48,7 @@ void menu_add_entry(struct symbol *sym)
 {
 	struct menu *menu;
 
-	menu = malloc(sizeof(*menu));
+	menu = xmalloc(sizeof(*menu));
 	memset(menu, 0, sizeof(*menu));
 	menu->sym = sym;
 	menu->parent = current_menu;
@@ -119,12 +119,13 @@ void menu_set_type(int type)
 		sym->type = type;
 		return;
 	}
-	menu_warn(current_entry, "type of '%s' redefined from '%s' to '%s'",
-	    sym->name ? sym->name : "<choice>",
-	    sym_type_name(sym->type), sym_type_name(type));
+	menu_warn(current_entry,
+		"ignoring type redefinition of '%s' from '%s' to '%s'",
+		sym->name ? sym->name : "<choice>",
+		sym_type_name(sym->type), sym_type_name(type));
 }
 
-struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
+static struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
 {
 	struct property *prop = prop_alloc(type, current_entry->sym);
 
@@ -152,11 +153,24 @@ struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *e
 			struct menu *menu = current_entry;
 
 			while ((menu = menu->parent) != NULL) {
+				struct expr *dup_expr;
+
 				if (!menu->visibility)
 					continue;
+				/*
+				 * Do not add a reference to the
+				 * menu's visibility expression but
+				 * use a copy of it.  Otherwise the
+				 * expression reduction functions
+				 * will modify expressions that have
+				 * multiple references which can
+				 * cause unwanted side effects.
+				 */
+				dup_expr = expr_copy(menu->visibility);
+
 				prop->visible.expr
 					= expr_alloc_and(prop->visible.expr,
-							 menu->visibility);
+							 dup_expr);
 			}
 		}
 
@@ -190,12 +204,15 @@ void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
 
 void menu_add_option(int token, char *arg)
 {
-	struct property *prop;
-
 	switch (token) {
 	case T_OPT_MODULES:
-		prop = prop_alloc(P_DEFAULT, modules_sym);
-		prop->expr = expr_alloc_symbol(current_entry->sym);
+		if (modules_sym)
+			zconf_error("symbol '%s' redefines option 'modules'"
+				    " already defined by symbol '%s'",
+				    current_entry->sym->name,
+				    modules_sym->name
+				    );
+		modules_sym = current_entry->sym;
 		break;
 	case T_OPT_DEFCONFIG_LIST:
 		if (!sym_defconfig_list)
@@ -206,6 +223,9 @@ void menu_add_option(int token, char *arg)
 	case T_OPT_ENV:
 		prop_add_env(arg);
 		break;
+	case T_OPT_ALLNOCONFIG_Y:
+		current_entry->sym->flags |= SYMBOL_ALLNOCONFIG_Y;
+		break;
 	}
 }
 
@@ -244,8 +264,8 @@ static void sym_check_prop(struct symbol *sym)
 				    "config symbol '%s' uses select, but is "
 				    "not boolean or tristate", sym->name);
 			else if (sym2->type != S_UNKNOWN &&
-			         sym2->type != S_BOOLEAN &&
-			         sym2->type != S_TRISTATE)
+				 sym2->type != S_BOOLEAN &&
+				 sym2->type != S_TRISTATE)
 				prop_warn(prop,
 				    "'%s' has wrong type. 'select' only "
 				    "accept arguments of boolean and "
@@ -254,7 +274,7 @@ static void sym_check_prop(struct symbol *sym)
 		case P_RANGE:
 			if (sym->type != S_INT && sym->type != S_HEX)
 				prop_warn(prop, "range is only allowed "
-				                "for int or hex symbols");
+						"for int or hex symbols");
 			if (!menu_validate_number(sym, prop->expr->left.sym) ||
 			    !menu_validate_number(sym, prop->expr->right.sym))
 				prop_warn(prop, "range is invalid");
@@ -285,11 +305,6 @@ void menu_finalize(struct menu *parent)
 					}
 				}
 			}
-			if (parent->prompt &&
-			    !expr_is_yes(parent->prompt->visible.expr)) {
-				parent->visibility = expr_alloc_and (parent->visibility,
-								     parent->prompt->visible.expr);
-			}
 			/* set the type of the remaining choice values */
 			for (menu = parent->list; menu; menu = menu->next) {
 				current_entry = menu;
@@ -441,6 +456,22 @@ bool menu_has_prompt(struct menu *menu)
 	return true;
 }
 
+/*
+ * Determine if a menu is empty.
+ * A menu is considered empty if it contains no or only
+ * invisible entries.
+ */
+bool menu_is_empty(struct menu *menu)
+{
+	struct menu *child;
+
+	for (child = menu->list; child; child = child->next) {
+		if (menu_is_visible(child))
+			return(false);
+	}
+	return(true);
+}
+
 bool menu_is_visible(struct menu *menu)
 {
 	struct menu *child;
@@ -518,27 +549,53 @@ const char *menu_get_help(struct menu *menu)
 		return "";
 }
 
-static void get_prompt_str(struct gstr *r, struct property *prop)
+static void get_prompt_str(struct gstr *r, struct property *prop,
+			   struct list_head *head)
 {
 	int i, j;
-	struct menu *submenu[8], *menu;
+	struct menu *submenu[8], *menu, *location = NULL;
+	struct jump_key *jump = NULL;
 
 	str_printf(r, _("Prompt: %s\n"), _(prop->text));
-	str_printf(r, _("  Defined at %s:%d\n"), prop->menu->file->name,
-		prop->menu->lineno);
-	if (!expr_is_yes(prop->visible.expr)) {
-		str_append(r, _("  Depends on: "));
-		expr_gstr_print(prop->visible.expr, r);
-		str_append(r, "\n");
-	}
 	menu = prop->menu->parent;
-	for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent)
+	for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
+		bool accessible = menu_is_visible(menu);
+
 		submenu[i++] = menu;
+		if (location == NULL && accessible)
+			location = menu;
+	}
+	if (head && location) {
+		jump = xmalloc(sizeof(struct jump_key));
+
+		if (menu_is_visible(prop->menu)) {
+			/*
+			 * There is not enough room to put the hint at the
+			 * beginning of the "Prompt" line. Put the hint on the
+			 * last "Location" line even when it would belong on
+			 * the former.
+			 */
+			jump->target = prop->menu;
+		} else
+			jump->target = location;
+
+		if (list_empty(head))
+			jump->index = 0;
+		else
+			jump->index = list_entry(head->prev, struct jump_key,
+						 entries)->index + 1;
+
+		list_add_tail(&jump->entries, head);
+	}
+
 	if (i > 0) {
 		str_printf(r, _("  Location:\n"));
 		for (j = 4; --i >= 0; j += 2) {
 			menu = submenu[i];
-			str_printf(r, "%*c-> %s", j, ' ', _(menu_get_prompt(menu)));
+			if (jump && menu == location)
+				jump->offset = strlen(r->s);
+			str_printf(r, "%*c-> %s", j, ' ',
+				   _(menu_get_prompt(menu)));
 			if (menu->sym) {
 				str_printf(r, " (%s [=%s])", menu->sym->name ?
 					menu->sym->name : _("<choice>"),
@@ -549,7 +606,23 @@ static void get_prompt_str(struct gstr *r, struct property *prop)
 	}
 }
 
-void get_symbol_str(struct gstr *r, struct symbol *sym)
+/*
+ * get property of type P_SYMBOL
+ */
+static struct property *get_symbol_prop(struct symbol *sym)
+{
+	struct property *prop = NULL;
+
+	for_all_properties(sym, prop, P_SYMBOL)
+		break;
+	return prop;
+}
+
+/*
+ * head is optional and may be NULL
+ */
+static void get_symbol_str(struct gstr *r, struct symbol *sym,
+		    struct list_head *head)
 {
 	bool hit;
 	struct property *prop;
@@ -568,7 +641,19 @@ void get_symbol_str(struct gstr *r, struct symbol *sym)
 		}
 	}
 	for_all_prompts(sym, prop)
-		get_prompt_str(r, prop);
+		get_prompt_str(r, prop, head);
+
+	prop = get_symbol_prop(sym);
+	if (prop) {
+		str_printf(r, _("  Defined at %s:%d\n"), prop->menu->file->name,
+			prop->menu->lineno);
+		if (!expr_is_yes(prop->visible.expr)) {
+			str_append(r, _("  Depends on: "));
+			expr_gstr_print(prop->visible.expr, r);
+			str_append(r, "\n");
+		}
+	}
+
 	hit = false;
 	for_all_properties(sym, prop, P_SELECT) {
 		if (!hit) {
@@ -588,14 +673,14 @@ void get_symbol_str(struct gstr *r, struct symbol *sym)
 	str_append(r, "\n\n");
 }
 
-struct gstr get_relations_str(struct symbol **sym_arr)
+struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head)
 {
 	struct symbol *sym;
 	struct gstr res = str_new();
 	int i;
 
 	for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
-		get_symbol_str(&res, sym);
+		get_symbol_str(&res, sym, head);
 	if (!i)
 		str_append(&res, _("No matches found.\n"));
 	return res;
@@ -605,16 +690,14 @@ struct gstr get_relations_str(struct symbol **sym_arr)
 void menu_get_ext_help(struct menu *menu, struct gstr *help)
 {
 	struct symbol *sym = menu->sym;
+	const char *help_text = nohelp_text;
 
 	if (menu_has_help(menu)) {
-		if (sym->name) {
+		if (sym->name)
 			str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
-			str_append(help, _(menu_get_help(menu)));
-			str_append(help, "\n");
-		}
-	} else {
-		str_append(help, nohelp_text);
+		help_text = menu_get_help(menu);
 	}
+	str_printf(help, "%s\n", _(help_text));
 	if (sym)
-		get_symbol_str(help, sym);
+		get_symbol_str(help, sym, NULL);
 }
diff --git a/kconfig/nconf.c b/kconfig/nconf.c
index 488dd741..4db74c92 100644
--- a/kconfig/nconf.c
+++ b/kconfig/nconf.c
@@ -7,217 +7,211 @@
  */
 #define _GNU_SOURCE
 #include <string.h>
-#define LKC_DIRECT_LINK
+#include <stdlib.h>
+
 #include "lkc.h"
 #include "nconf.h"
 #include <ctype.h>
 
-static const char nconf_readme[] = N_(
-"Overview\n"
-"--------\n"
-"This interface let you select features and parameters for the build.\n"
-"Features can either be built-in, modularized, or ignored. Parameters\n"
-"must be entered in as decimal or hexadecimal numbers or text.\n"
-"\n"
-"Menu items beginning with following braces represent features that\n"
-"  [ ] can be built in or removed\n"
-"  < > can be built in, modularized or removed\n"
-"  { } can be built in or modularized (selected by other feature)\n"
-"  - - are selected by other feature,\n"
-"  XXX cannot be selected. Use Symbol Info to find out why,\n"
-"while *, M or whitespace inside braces means to build in, build as\n"
-"a module or to exclude the feature respectively.\n"
+static const char nconf_global_help[] = N_(
+"Help windows\n"
+"------------\n"
+"o  Global help:  Unless in a data entry window, pressing <F1> will give \n"
+"   you the global help window, which you are just reading.\n"
 "\n"
-"To change any of these features, highlight it with the cursor\n"
-"keys and press <Y> to build it in, <M> to make it a module or\n"
-"<N> to removed it.  You may also press the <Space Bar> to cycle\n"
-"through the available options (ie. Y->N->M->Y).\n"
+"o  A short version of the global help is available by pressing <F3>.\n"
 "\n"
-"Some additional keyboard hints:\n"
-"\n"
-"Menus\n"
-"----------\n"
-"o  Use the Up/Down arrow keys (cursor keys) to highlight the item\n"
-"   you wish to change use <Enter> or <Space>. Goto submenu by \n"
-"   pressing <Enter> of <right-arrow>. Use <Esc> or <left-arrow> to go back.\n"
-"   Submenus are designated by \"--->\".\n"
+"o  Local help:  To get help related to the current menu entry, use any\n"
+"   of <?> <h>, or if in a data entry window then press <F1>.\n"
 "\n"
-"   Searching: pressing '/' triggers interactive search mode.\n"
-"              nconfig performs a case insensitive search for the string\n"
-"              in the menu prompts (no regex support).\n"
-"              Pressing the up/down keys highlights the previous/next\n"
-"              matching item. Backspace removes one character from the\n"
-"              match string. Pressing either '/' again or ESC exits\n"
-"              search mode. All other keys behave normally.\n"
 "\n"
-"   You may also use the <PAGE UP> and <PAGE DOWN> keys to scroll\n"
-"   unseen options into view.\n"
+"Menu entries\n"
+"------------\n"
+"This interface lets you select features and parameters for Crosstool-NG\n"
+"build.  Crosstool-NG features can either be built-in, modularized, or\n"
+"removed.\n"
+"Parameters must be entered as text or decimal or hexadecimal numbers.\n"
 "\n"
-"o  To exit a menu use the just press <ESC> <F5> <F8> or <left-arrow>.\n"
+"Menu entries beginning with following braces represent features that\n"
+"  [ ]  can be built in or removed\n"
+"  < >  can be built in, modularized or removed\n"
+"  { }  can be built in or modularized, are selected by another feature\n"
+"  - -  are selected by another feature\n"
+"  XXX  cannot be selected.  Symbol Info <F2> tells you why.\n"
+"*, M or whitespace inside braces means to enable the option, let the build\n"
+"automatically decide what to choose or to exclude the feature respectively.\n"
+"The M (automatic decision) may have other meanings. It is suggested to\n"
+"read the help for the feature.\n"
 "\n"
-"o  To get help with an item, press <F1>\n"
-"   Shortcut: Press <h> or <?>.\n"
+"To change any of these features, highlight it with the movement keys\n"
+"listed below and press <y> to enable it, <m> to let the component\n"
+"automatically decide what to do or <n> to disable it.  You may press\n"
+"the <Space> key to cycle through the available options.\n"
 "\n"
+"A trailing \"--->\" designates a submenu, a trailing \"----\" an\n"
+"empty submenu.\n"
 "\n"
-"Radiolists  (Choice lists)\n"
-"-----------\n"
-"o  Use the cursor keys to select the option you wish to set and press\n"
-"   <S> or the <SPACE BAR>.\n"
+"Menu navigation keys\n"
+"----------------------------------------------------------------------\n"
+"Linewise up                 <Up>\n"
+"Linewise down               <Down>\n"
+"Pagewise up                 <Page Up>\n"
+"Pagewise down               <Page Down>\n"
+"First entry                 <Home>\n"
+"Last entry                  <End>\n"
+"Enter a submenu             <Right>  <Enter>\n"
+"Go back to parent menu      <Left>   <Esc>  <F5>\n"
+"Close a help window         <Enter>  <Esc>  <F5>\n"
+"Close entry window, apply   <Enter>\n"
+"Close entry window, forget  <Esc>  <F5>\n"
+"Start incremental, case-insensitive search for STRING in menu entries,\n"
+"    no regex support, STRING is displayed in upper left corner\n"
+"                            </>STRING\n"
+"    Remove last character   <Backspace>\n"
+"    Jump to next hit        <Down>\n"
+"    Jump to previous hit    <Up>\n"
+"Exit menu search mode       </>  <Esc>\n"
+"Search for configuration variables with or without leading CONFIG_\n"
+"                            <F8>RegExpr<Enter>\n"
+"Verbose search help         <F8><F1>\n"
+"----------------------------------------------------------------------\n"
 "\n"
-"   Shortcut: Press the first letter of the option you wish to set then\n"
-"             press <S> or <SPACE BAR>.\n"
+"Unless in a data entry window, key <1> may be used instead of <F1>,\n"
+"<2> instead of <F2>, etc.\n"
 "\n"
-"o  To see available help for the item, press <F1>\n"
-"   Shortcut: Press <H> or <?>.\n"
 "\n"
+"Radiolist (Choice list)\n"
+"-----------------------\n"
+"Use the movement keys listed above to select the option you wish to set\n"
+"and press <Space>.\n"
 "\n"
-"Data Entry\n"
-"-----------\n"
-"o  Enter the requested information and press <ENTER>\n"
-"   If you are entering hexadecimal values, it is not necessary to\n"
-"   add the '0x' prefix to the entry.\n"
 "\n"
-"o  For help, press <F1>.\n"
+"Data entry\n"
+"----------\n"
+"Enter the requested information and press <Enter>.  Hexadecimal values\n"
+"may be entered without the \"0x\" prefix.\n"
 "\n"
 "\n"
-"Text Box    (Help Window)\n"
-"--------\n"
-"o  Use the cursor keys to scroll up/down/left/right.  The VI editor\n"
-"   keys h,j,k,l function here as do <SPACE BAR> for those\n"
-"   who are familiar with less and lynx.\n"
+"Text Box (Help Window)\n"
+"----------------------\n"
+"Use movement keys as listed in table above.\n"
 "\n"
-"o  Press <Enter>, <F1>, <F5>, <F7> or <Esc> to exit.\n"
+"Press any of <Enter> <Esc> <q> <F5> <F9> to exit.\n"
 "\n"
 "\n"
-"Alternate Configuration Files\n"
+"Alternate configuration files\n"
 "-----------------------------\n"
-"nconfig supports the use of alternate configuration files for\n"
-"those who, for various reasons, find it necessary to switch\n"
-"between different configurations.\n"
+"nconfig supports switching between different configurations.\n"
+"Press <F6> to save your current configuration.  Press <F7> and enter\n"
+"a file name to load a previously saved configuration.\n"
 "\n"
-"At the end of the main menu you will find two options.  One is\n"
-"for saving the current configuration to a file of your choosing.\n"
-"The other option is for loading a previously saved alternate\n"
-"configuration.\n"
 "\n"
-"Even if you don't use alternate configuration files, but you\n"
-"find during a nconfig session that you have completely messed\n"
-"up your settings, you may use the \"Load Alternate...\" option to\n"
-"restore your previously saved settings from \".config\" without\n"
-"restarting nconfig.\n"
+"Terminal configuration\n"
+"----------------------\n"
+"If you use nconfig in a xterm window, make sure your TERM environment\n"
+"variable specifies a terminal configuration which supports at least\n"
+"16 colors.  Otherwise nconfig will look rather bad.\n"
 "\n"
-"Other information\n"
-"-----------------\n"
-"If you use nconfig in an XTERM window make sure you have your\n"
-"$TERM variable set to point to a xterm definition which supports color.\n"
-"Otherwise, nconfig will look rather bad.  nconfig will not\n"
-"display correctly in a RXVT window because rxvt displays only one\n"
-"intensity of color, bright.\n"
+"If the \"stty size\" command reports the current terminalsize correctly,\n"
+"nconfig will adapt to sizes larger than the traditional 80x25 \"standard\"\n"
+"and display longer menus properly.\n"
 "\n"
-"nconfig will display larger menus on screens or xterms which are\n"
-"set to display more than the standard 25 row by 80 column geometry.\n"
-"In order for this to work, the \"stty size\" command must be able to\n"
-"display the screen's current row and column geometry.  I STRONGLY\n"
-"RECOMMEND that you make sure you do NOT have the shell variables\n"
-"LINES and COLUMNS exported into your environment.  Some distributions\n"
-"export those variables via /etc/profile.  Some ncurses programs can\n"
-"become confused when those variables (LINES & COLUMNS) don't reflect\n"
-"the true screen size.\n"
 "\n"
-"Optional personality available\n"
-"------------------------------\n"
-"If you prefer to have all of the options listed in a single menu, rather\n"
-"than the default multimenu hierarchy, run the nconfig with NCONFIG_MODE\n"
-"environment variable set to single_menu. Example:\n"
+"Single menu mode\n"
+"----------------\n"
+"If you prefer to have all of the menu entries listed in a single menu,\n"
+"rather than the default multimenu hierarchy, run nconfig with\n"
+"NCONFIG_MODE environment variable set to single_menu.  Example:\n"
 "\n"
-"make NCONFIG_MODE=single_menu nconfig\n"
+"ct-ng NCONFIG_MODE=single_menu nconfig\n"
 "\n"
-"<Enter> will then unroll the appropriate category, or enfold it if it\n"
-"is already unrolled.\n"
+"<Enter> will then unfold the appropriate category, or fold it if it\n"
+"is already unfolded.  Folded menu entries will be designated by a\n"
+"leading \"++>\" and unfolded entries by a leading \"-->\".\n"
 "\n"
-"Note that this mode can eventually be a little more CPU expensive\n"
-"(especially with a larger number of unrolled categories) than the\n"
-"default mode.\n"
+"Note that this mode can eventually be a little more CPU expensive than\n"
+"the default mode, especially with a larger number of unfolded submenus.\n"
 "\n"),
 menu_no_f_instructions[] = N_(
-" You do not have function keys support. Please follow the\n"
-" following instructions:\n"
-" Arrow keys navigate the menu.\n"
-" <Enter> or <right-arrow> selects submenus --->.\n"
-" Capital Letters are hotkeys.\n"
-" Pressing <Y> includes, <N> excludes, <M> modularizes features.\n"
-" Pressing SpaceBar toggles between the above options.\n"
-" Press <Esc> or <left-arrow> to go back one menu,\n"
-" <?> or <h> for Help, </> for Search.\n"
-" <1> is interchangeable with <F1>, <2> with <F2>, etc.\n"
-" Legend: [*] built-in  [ ] excluded  <M> module  < > module capable.\n"
-" <Esc> always leaves the current window.\n"),
+"Legend:  [*] built-in  [ ] excluded  <M> automatic < > automatic capable.\n"
+"Submenus are designated by a trailing \"--->\", empty ones by \"----\".\n"
+"\n"
+"Use the following keys to navigate the menus:\n"
+"Move up or down with <Up> and <Down>.\n"
+"Enter a submenu with <Enter> or <Right>.\n"
+"Exit a submenu to its parent menu with <Esc> or <Left>.\n"
+"Pressing <y> includes, <n> excludes, <m> modularizes features.\n"
+"Pressing <Space> cycles through the available options.\n"
+"To search for menu entries press </>.\n"
+"<Esc> always leaves the current window.\n"
+"\n"
+"You do not have function keys support.\n"
+"Press <1> instead of <F1>, <2> instead of <F2>, etc.\n"
+"For verbose global help use key <1>.\n"
+"For help related to the current menu entry press <?> or <h>.\n"),
 menu_instructions[] = N_(
-" Arrow keys navigate the menu.\n"
-" <Enter> or <right-arrow> selects submenus --->.\n"
-" Capital Letters are hotkeys.\n"
-" Pressing <Y> includes, <N> excludes, <M> modularizes features.\n"
-" Pressing SpaceBar toggles between the above options\n"
-" Press <Esc>, <F5> or <left-arrow> to go back one menu,\n"
-" <?>, <F1> or <h> for Help, </> for Search.\n"
-" <1> is interchangeable with <F1>, <2> with <F2>, etc.\n"
-" Legend: [*] built-in  [ ] excluded  <M> module  < > module capable.\n"
-" <Esc> always leaves the current window\n"),
+"Legend:  [*] built-in  [ ] excluded  <M> automatic  < > automatic capable.\n"
+"Submenus are designated by a trailing \"--->\", empty ones by \"----\".\n"
+"\n"
+"Use the following keys to navigate the menus:\n"
+"Move up or down with <Up> or <Down>.\n"
+"Enter a submenu with <Enter> or <Right>.\n"
+"Exit a submenu to its parent menu with <Esc> or <Left>.\n"
+"Pressing <y> includes, <n> excludes, <m> modularizes features.\n"
+"Pressing <Space> cycles through the available options.\n"
+"To search for menu entries press </>.\n"
+"<Esc> always leaves the current window.\n"
+"\n"
+"Pressing <1> may be used instead of <F1>, <2> instead of <F2>, etc.\n"
+"For verbose global help press <F1>.\n"
+"For help related to the current menu entry press <?> or <h>.\n"),
 radiolist_instructions[] = N_(
-" Use the arrow keys to navigate this window or\n"
-" press the hotkey of the item you wish to select\n"
-" followed by the <SPACE BAR>.\n"
-" Press <?>, <F1> or <h> for additional information about this option.\n"),
+"Press <Up>, <Down>, <Home> or <End> to navigate a radiolist, select\n"
+"with <Space>.\n"
+"For help related to the current entry press <?> or <h>.\n"
+"For global help press <F1>.\n"),
 inputbox_instructions_int[] = N_(
 "Please enter a decimal value.\n"
 "Fractions will not be accepted.\n"
-"Press <RETURN> to accept, <ESC> to cancel."),
+"Press <Enter> to apply, <Esc> to cancel."),
 inputbox_instructions_hex[] = N_(
 "Please enter a hexadecimal value.\n"
-"Press <RETURN> to accept, <ESC> to cancel."),
+"Press <Enter> to apply, <Esc> to cancel."),
 inputbox_instructions_string[] = N_(
 "Please enter a string value.\n"
-"Press <RETURN> to accept, <ESC> to cancel."),
+"Press <Enter> to apply, <Esc> to cancel."),
 setmod_text[] = N_(
-"This feature depends on another which\n"
-"has been configured as a module.\n"
-"As a result, this feature will be built as a module."),
-nohelp_text[] = N_(
-"There is no help available for this option.\n"),
+"This feature depends on another feature which has been configured as\n"
+"automatic.  As a result, the current feature will be built as automatic too."),
 load_config_text[] = N_(
 "Enter the name of the configuration file you wish to load.\n"
-"Accept the name shown to restore the configuration you\n"
-"last retrieved.  Leave blank to abort."),
+"Accept the name shown to restore the configuration you last\n"
+"retrieved.  Leave empty to abort."),
 load_config_help[] = N_(
-"\n"
 "For various reasons, one may wish to keep several different\n"
 "configurations available on a single machine.\n"
 "\n"
 "If you have saved a previous configuration in a file other than the\n"
-"default one, entering its name here will allow you to modify that\n"
-"configuration.\n"
+"default one, entering its name here will allow you to load and modify\n"
+"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"),
+"Leave empty to abort.\n"),
 save_config_text[] = N_(
 "Enter a filename to which this configuration should be saved\n"
-"as an alternate.  Leave blank to abort."),
+"as an alternate.  Leave empty to abort."),
 save_config_help[] = N_(
-"\n"
-"For various reasons, one may wish to keep different configurations\n"
-"available on a single machine.\n"
+"For various reasons, one may wish to keep several different\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"),
+"Leave empty to abort.\n"),
 search_help[] = N_(
-"\n"
-"Search for symbols and display their relations. Regular expressions\n"
-"are allowed.\n"
-"Example: search for \"^FOO\"\n"
+"Search for symbols (configuration variable names CONFIG_*) and display\n"
+"their relations.  Regular expressions are supported.\n"
+"Example:  Search for \"^FOO\".\n"
 "Result:\n"
 "-----------------------------------------------------------------\n"
 "Symbol: FOO [ = m]\n"
@@ -225,32 +219,32 @@ search_help[] = N_(
 "Defined at drivers/pci/Kconfig:47\n"
 "Depends on: X86_LOCAL_APIC && X86_IO_APIC || IA64\n"
 "Location:\n"
-"  -> Bus options (PCI, PCMCIA, EISA, MCA, ISA)\n"
+"  -> Bus options (PCI, PCMCIA, EISA, ISA)\n"
 "    -> PCI support (PCI [ = y])\n"
 "      -> PCI access mode (<choice> [ = y])\n"
 "Selects: LIBCRC32\n"
 "Selected by: BAR\n"
 "-----------------------------------------------------------------\n"
-"o The line 'Prompt:' shows the text used in the menu structure for\n"
-"  this symbol\n"
-"o The 'Defined at' line tell at what file / line number the symbol\n"
-"  is defined\n"
-"o The 'Depends on:' line tell what symbols needs to be defined for\n"
-"  this symbol to be visible in the menu (selectable)\n"
-"o The 'Location:' lines tell where in the menu structure this symbol\n"
-"  is located\n"
-"    A location followed by a [ = y] indicate that this is a selectable\n"
-"    menu item - and current value is displayed inside brackets.\n"
-"o The 'Selects:' line tell what symbol will be automatically\n"
-"  selected if this symbol is selected (y or m)\n"
-"o The 'Selected by' line tell what symbol has selected this symbol\n"
+"o  The line 'Prompt:' shows the text displayed for this symbol in\n"
+"   the menu hierarchy.\n"
+"o  The 'Defined at' line tells at what file / line number the symbol is\n"
+"   defined.\n"
+"o  The 'Depends on:' line lists symbols that need to be defined for\n"
+"   this symbol to be visible and selectable in the menu.\n"
+"o  The 'Location:' lines tell, where in the menu structure this symbol\n"
+"   is located.  A location followed by a [ = y] indicates that this is\n"
+"   a selectable menu item, and the current value is displayed inside\n"
+"   brackets.\n"
+"o  The 'Selects:' line tells, what symbol will be automatically selected\n"
+"   if this symbol is selected (y or m).\n"
+"o  The 'Selected by' line tells what symbol has selected this symbol.\n"
 "\n"
 "Only relevant lines are shown.\n"
 "\n\n"
 "Search examples:\n"
-"Examples: USB  => find all symbols containing USB\n"
-"          ^USB => find all symbols starting with USB\n"
-"          USB$ => find all symbols ending with USB\n"
+"USB  => find all symbols containing USB\n"
+"^USB => find all symbols starting with USB\n"
+"USB$ => find all symbols ending with USB\n"
 "\n");
 
 struct mitem {
@@ -280,6 +274,9 @@ static int global_exit;
 /* the currently selected button */
 const char *current_instructions = menu_instructions;
 
+static char *dialog_input_result;
+static int dialog_input_result_len;
+
 static void conf(struct menu *menu);
 static void conf_choice(struct menu *menu);
 static void conf_string(struct menu *menu);
@@ -318,19 +315,19 @@ struct function_keys function_keys[] = {
 	},
 	{
 		.key_str = "F2",
-		.func = "Sym Info",
+		.func = "SymInfo",
 		.key = F_SYMBOL,
 		.handler = handle_f2,
 	},
 	{
 		.key_str = "F3",
-		.func = "Insts",
+		.func = "Help 2",
 		.key = F_INSTS,
 		.handler = handle_f3,
 	},
 	{
 		.key_str = "F4",
-		.func = "Config",
+		.func = "ShowAll",
 		.key = F_CONF,
 		.handler = handle_f4,
 	},
@@ -354,7 +351,7 @@ struct function_keys function_keys[] = {
 	},
 	{
 		.key_str = "F8",
-		.func = "Sym Search",
+		.func = "SymSearch",
 		.key = F_SEARCH,
 		.handler = handle_f8,
 	},
@@ -371,15 +368,16 @@ static void print_function_line(void)
 	int i;
 	int offset = 1;
 	const int skip = 1;
+	int lines = getmaxy(stdscr);
 
 	for (i = 0; i < function_keys_num; i++) {
 		(void) wattrset(main_window, attributes[FUNCTION_HIGHLIGHT]);
-		mvwprintw(main_window, LINES-3, offset,
+		mvwprintw(main_window, lines-3, offset,
 				"%s",
 				function_keys[i].key_str);
 		(void) wattrset(main_window, attributes[FUNCTION_TEXT]);
 		offset += strlen(function_keys[i].key_str);
-		mvwprintw(main_window, LINES-3,
+		mvwprintw(main_window, lines-3,
 				offset, "%s",
 				function_keys[i].func);
 		offset += strlen(function_keys[i].func) + skip;
@@ -391,7 +389,7 @@ static void print_function_line(void)
 static void handle_f1(int *key, struct menu *current_item)
 {
 	show_scroll_win(main_window,
-			_("README"), _(nconf_readme));
+			_("Global help"), _(nconf_global_help));
 	return;
 }
 
@@ -406,7 +404,7 @@ static void handle_f2(int *key, struct menu *current_item)
 static void handle_f3(int *key, struct menu *current_item)
 {
 	show_scroll_win(main_window,
-			_("Instructions"),
+			_("Short help"),
 			_(current_instructions));
 	return;
 }
@@ -695,15 +693,19 @@ static void search_conf(void)
 {
 	struct symbol **sym_arr;
 	struct gstr res;
-	char dialog_input_result[100];
+	struct gstr title;
 	char *dialog_input;
 	int dres;
+
+	title = str_new();
+	str_printf( &title, _("Enter (sub)string or regexp to search for "
+			      "(with or without \"%s\")"), CONFIG_);
+
 again:
 	dres = dialog_inputbox(main_window,
 			_("Search Configuration Parameter"),
-			_("Enter " CONFIG_ " (sub)string to search for "
-				"(with or without \"" CONFIG_ "\")"),
-			"", dialog_input_result, 99);
+			str_get(&title),
+			"", &dialog_input_result, &dialog_input_result_len);
 	switch (dres) {
 	case 0:
 		break;
@@ -712,6 +714,7 @@ again:
 				_("Search Configuration"), search_help);
 		goto again;
 	default:
+		str_free(&title);
 		return;
 	}
 
@@ -721,11 +724,12 @@ again:
 		dialog_input += strlen(CONFIG_);
 
 	sym_arr = sym_re_search(dialog_input);
-	res = get_relations_str(sym_arr);
+	res = get_relations_str(sym_arr, NULL);
 	free(sym_arr);
 	show_scroll_win(main_window,
 			_("Search Results"), str_get(&res));
 	str_free(&res);
+	str_free(&title);
 }
 
 
@@ -759,9 +763,9 @@ static void build_conf(struct menu *menu)
 						indent + 1, ' ', prompt);
 				} else
 					item_make(menu, 'm',
-						"   %*c%s  --->",
-						indent + 1,
-						' ', prompt);
+						  "   %*c%s  %s",
+						  indent + 1, ' ', prompt,
+						  menu_is_empty(menu) ? "----" : "--->");
 
 				if (single_menu_mode && menu->data)
 					goto conf_childs;
@@ -903,7 +907,7 @@ static void build_conf(struct menu *menu)
 				(sym_has_value(sym) || !sym_is_changable(sym)) ?
 				"" : _(" (NEW)"));
 		if (menu->prompt && menu->prompt->type == P_MENU) {
-			item_add_str("  --->");
+			item_add_str("  %s", menu_is_empty(menu) ? "----" : "--->");
 			return;
 		}
 	}
@@ -954,7 +958,7 @@ static void show_menu(const char *prompt, const char *instructions,
 
 	clear();
 	(void) wattrset(main_window, attributes[NORMAL]);
-	print_in_middle(stdscr, 1, 0, COLS,
+	print_in_middle(stdscr, 1, 0, getmaxx(stdscr),
 			menu_backtitle,
 			attributes[MAIN_HEADING]);
 
@@ -1067,7 +1071,6 @@ static void conf(struct menu *menu)
 	struct menu *submenu = 0;
 	const char *prompt = menu_get_prompt(menu);
 	struct symbol *sym;
-	struct menu *active_menu = NULL;
 	int res;
 	int current_index = 0;
 	int last_top_row = 0;
@@ -1152,13 +1155,9 @@ static void conf(struct menu *menu)
 			continue;
 
 		submenu = (struct menu *) item_data();
-		active_menu = (struct menu *)item_data();
 		if (!submenu || !menu_is_visible(submenu))
 			continue;
-		if (submenu)
-			sym = submenu->sym;
-		else
-			sym = NULL;
+		sym = submenu->sym;
 
 		switch (res) {
 		case ' ':
@@ -1222,20 +1221,13 @@ static void conf_message_callback(const char *fmt, va_list ap)
 
 static void show_help(struct menu *menu)
 {
-	struct gstr help = str_new();
-
-	if (menu && menu->sym && menu_has_help(menu)) {
-		if (menu->sym->name) {
-			str_printf(&help, "%s%s:\n\n", CONFIG_, menu->sym->name);
-			str_append(&help, _(menu_get_help(menu)));
-			str_append(&help, "\n");
-			get_symbol_str(&help, menu->sym);
-		} else {
-			str_append(&help, _(menu_get_help(menu)));
-		}
-	} else {
-		str_append(&help, nohelp_text);
-	}
+	struct gstr help;
+
+	if (!menu)
+		return;
+
+	help = str_new();
+	menu_get_ext_help(menu, &help);
 	show_scroll_win(main_window, _(menu_get_prompt(menu)), str_get(&help));
 	str_free(&help);
 }
@@ -1360,7 +1352,6 @@ static void conf_choice(struct menu *menu)
 static void conf_string(struct menu *menu)
 {
 	const char *prompt = menu_get_prompt(menu);
-	char dialog_input_result[256];
 
 	while (1) {
 		int res;
@@ -1383,8 +1374,8 @@ static void conf_string(struct menu *menu)
 				prompt ? _(prompt) : _("Main Menu"),
 				heading,
 				sym_get_string_value(menu->sym),
-				dialog_input_result,
-				sizeof(dialog_input_result));
+				&dialog_input_result,
+				&dialog_input_result_len);
 		switch (res) {
 		case 0:
 			if (sym_set_string_value(menu->sym,
@@ -1404,14 +1395,13 @@ static void conf_string(struct menu *menu)
 
 static void conf_load(void)
 {
-	char dialog_input_result[256];
 	while (1) {
 		int res;
 		res = dialog_inputbox(main_window,
 				NULL, load_config_text,
 				filename,
-				dialog_input_result,
-				sizeof(dialog_input_result));
+				&dialog_input_result,
+				&dialog_input_result_len);
 		switch (res) {
 		case 0:
 			if (!dialog_input_result[0])
@@ -1436,14 +1426,13 @@ static void conf_load(void)
 
 static void conf_save(void)
 {
-	char dialog_input_result[256];
 	while (1) {
 		int res;
 		res = dialog_inputbox(main_window,
 				NULL, save_config_text,
 				filename,
-				dialog_input_result,
-				sizeof(dialog_input_result));
+				&dialog_input_result,
+				&dialog_input_result_len);
 		switch (res) {
 		case 0:
 			if (!dialog_input_result[0])
@@ -1470,14 +1459,18 @@ static void conf_save(void)
 
 void setup_windows(void)
 {
+	int lines, columns;
+
+	getmaxyx(stdscr, lines, columns);
+
 	if (main_window != NULL)
 		delwin(main_window);
 
 	/* set up the menu and menu window */
-	main_window = newwin(LINES-2, COLS-2, 2, 1);
+	main_window = newwin(lines-2, columns-2, 2, 1);
 	keypad(main_window, TRUE);
-	mwin_max_lines = LINES-7;
-	mwin_max_cols = COLS-6;
+	mwin_max_lines = lines-7;
+	mwin_max_cols = columns-6;
 
 	/* panels order is from bottom to top */
 	new_panel(main_window);
@@ -1485,12 +1478,18 @@ void setup_windows(void)
 
 int main(int ac, char **av)
 {
+	int lines, columns;
 	char *mode;
 
 	setlocale(LC_ALL, "");
 	bindtextdomain(PACKAGE, LOCALEDIR);
 	textdomain(PACKAGE);
 
+	if (ac > 1 && strcmp(av[1], "-s") == 0) {
+		/* Silence conf_read() until the real callback is set up */
+		conf_set_message_callback(NULL);
+		av++;
+	}
 	conf_parse(av[1]);
 	conf_read(NULL);
 
@@ -1510,7 +1509,8 @@ int main(int ac, char **av)
 	keypad(stdscr, TRUE);
 	curs_set(0);
 
-	if (COLS < 75 || LINES < 20) {
+	getmaxyx(stdscr, lines, columns);
+	if (columns < 75 || lines < 20) {
 		endwin();
 		printf("Your terminal should have at "
 			"least 20 lines and 75 columns\n");
@@ -1518,7 +1518,11 @@ int main(int ac, char **av)
 	}
 
 	notimeout(stdscr, FALSE);
+#if NCURSES_REENTRANT
+	set_escdelay(1);
+#else
 	ESCDELAY = 1;
+#endif
 
 	/* set btns menu */
 	curses_menu = new_menu(curses_menu_items);
@@ -1558,4 +1562,3 @@ int main(int ac, char **av)
 	endwin();
 	return 0;
 }
-
diff --git a/kconfig/nconf.gui.c b/kconfig/nconf.gui.c
index f8137b3a..8275f0e5 100644
--- a/kconfig/nconf.gui.c
+++ b/kconfig/nconf.gui.c
@@ -48,7 +48,7 @@ static void set_normal_colors(void)
 	init_pair(INPUT_FIELD, -1, -1);
 
 	init_pair(FUNCTION_HIGHLIGHT, -1, -1);
-	init_pair(FUNCTION_TEXT, COLOR_BLUE, -1);
+	init_pair(FUNCTION_TEXT, COLOR_YELLOW, -1);
 }
 
 /* available attributes:
@@ -276,8 +276,8 @@ int btn_dialog(WINDOW *main_window, const char *msg, int btn_num, ...)
 
 	total_width = max(msg_width, btns_width);
 	/* place dialog in middle of screen */
-	y = (LINES-(msg_lines+4))/2;
-	x = (COLS-(total_width+4))/2;
+	y = (getmaxy(stdscr)-(msg_lines+4))/2;
+	x = (getmaxx(stdscr)-(total_width+4))/2;
 
 
 	/* create the windows */
@@ -356,7 +356,7 @@ int btn_dialog(WINDOW *main_window, const char *msg, int btn_num, ...)
 
 int dialog_inputbox(WINDOW *main_window,
 		const char *title, const char *prompt,
-		const char *init, char *result, int result_len)
+		const char *init, char **resultp, int *result_len)
 {
 	int prompt_lines = 0;
 	int prompt_width = 0;
@@ -367,7 +367,13 @@ int dialog_inputbox(WINDOW *main_window,
 	int i, x, y;
 	int res = -1;
 	int cursor_position = strlen(init);
+	int cursor_form_win;
+	char *result = *resultp;
 
+	if (strlen(init)+1 > *result_len) {
+		*result_len = strlen(init)+1;
+		*resultp = result = realloc(result, *result_len);
+	}
 
 	/* find the widest line of msg: */
 	prompt_lines = get_line_no(prompt);
@@ -381,10 +387,10 @@ int dialog_inputbox(WINDOW *main_window,
 		prompt_width = max(prompt_width, strlen(title));
 
 	/* place dialog in middle of screen */
-	y = (LINES-(prompt_lines+4))/2;
-	x = (COLS-(prompt_width+4))/2;
+	y = (getmaxy(stdscr)-(prompt_lines+4))/2;
+	x = (getmaxx(stdscr)-(prompt_width+4))/2;
 
-	strncpy(result, init, result_len);
+	strncpy(result, init, *result_len);
 
 	/* create the windows */
 	win = newwin(prompt_lines+6, prompt_width+7, y, x);
@@ -405,7 +411,9 @@ int dialog_inputbox(WINDOW *main_window,
 	fill_window(prompt_win, prompt);
 
 	mvwprintw(form_win, 0, 0, "%*s", prompt_width, " ");
-	mvwprintw(form_win, 0, 0, "%s", result);
+	cursor_form_win = min(cursor_position, prompt_width-1);
+	mvwprintw(form_win, 0, 0, "%s",
+		  result + cursor_position-cursor_form_win);
 
 	/* create panels */
 	panel = new_panel(win);
@@ -431,6 +439,8 @@ int dialog_inputbox(WINDOW *main_window,
 						&result[cursor_position],
 						len-cursor_position+1);
 				cursor_position--;
+				cursor_form_win--;
+				len--;
 			}
 			break;
 		case KEY_DC:
@@ -438,38 +448,63 @@ int dialog_inputbox(WINDOW *main_window,
 				memmove(&result[cursor_position],
 						&result[cursor_position+1],
 						len-cursor_position+1);
+				len--;
 			}
 			break;
 		case KEY_UP:
 		case KEY_RIGHT:
-			if (cursor_position < len &&
-			    cursor_position < min(result_len, prompt_width))
+			if (cursor_position < len) {
 				cursor_position++;
+				cursor_form_win++;
+			}
 			break;
 		case KEY_DOWN:
 		case KEY_LEFT:
-			if (cursor_position > 0)
+			if (cursor_position > 0) {
 				cursor_position--;
+				cursor_form_win--;
+			}
+			break;
+		case KEY_HOME:
+			cursor_position = 0;
+			cursor_form_win = 0;
+			break;
+		case KEY_END:
+			cursor_position = len;
+			cursor_form_win = min(cursor_position, prompt_width-1);
 			break;
 		default:
-			if ((isgraph(res) || isspace(res)) &&
-					len-2 < result_len) {
+			if ((isgraph(res) || isspace(res))) {
+				/* one for new char, one for '\0' */
+				if (len+2 > *result_len) {
+					*result_len = len+2;
+					*resultp = result = realloc(result,
+								*result_len);
+				}
 				/* insert the char at the proper position */
 				memmove(&result[cursor_position+1],
 						&result[cursor_position],
-						len+1);
+						len-cursor_position+1);
 				result[cursor_position] = res;
 				cursor_position++;
+				cursor_form_win++;
+				len++;
 			} else {
-				mvprintw(0, 0, "unknow key: %d\n", res);
+				mvprintw(0, 0, "unknown key: %d\n", res);
 			}
 			break;
 		}
+		if (cursor_form_win < 0)
+			cursor_form_win = 0;
+		else if (cursor_form_win > prompt_width-1)
+			cursor_form_win = prompt_width-1;
+
 		wmove(form_win, 0, 0);
 		wclrtoeol(form_win);
 		mvwprintw(form_win, 0, 0, "%*s", prompt_width, " ");
-		mvwprintw(form_win, 0, 0, "%s", result);
-		wmove(form_win, 0, cursor_position);
+		mvwprintw(form_win, 0, 0, "%s",
+			result + cursor_position-cursor_form_win);
+		wmove(form_win, 0, cursor_form_win);
 		touchwin(win);
 		refresh_all_windows(main_window);
 
@@ -510,7 +545,7 @@ void show_scroll_win(WINDOW *main_window,
 {
 	int res;
 	int total_lines = get_line_no(text);
-	int x, y;
+	int x, y, lines, columns;
 	int start_x = 0, start_y = 0;
 	int text_lines = 0, text_cols = 0;
 	int total_cols = 0;
@@ -521,6 +556,8 @@ void show_scroll_win(WINDOW *main_window,
 	WINDOW *pad;
 	PANEL *panel;
 
+	getmaxyx(stdscr, lines, columns);
+
 	/* find the widest line of msg: */
 	total_lines = get_line_no(text);
 	for (i = 0; i < total_lines; i++) {
@@ -534,14 +571,14 @@ void show_scroll_win(WINDOW *main_window,
 	(void) wattrset(pad, attributes[SCROLLWIN_TEXT]);
 	fill_window(pad, text);
 
-	win_lines = min(total_lines+4, LINES-2);
-	win_cols = min(total_cols+2, COLS-2);
+	win_lines = min(total_lines+4, lines-2);
+	win_cols = min(total_cols+2, columns-2);
 	text_lines = max(win_lines-4, 0);
 	text_cols = max(win_cols-2, 0);
 
 	/* place window in middle of screen */
-	y = (LINES-win_lines)/2;
-	x = (COLS-win_cols)/2;
+	y = (lines-win_lines)/2;
+	x = (columns-win_cols)/2;
 
 	win = newwin(win_lines, win_cols, y, x);
 	keypad(win, TRUE);
@@ -569,9 +606,11 @@ void show_scroll_win(WINDOW *main_window,
 		switch (res) {
 		case KEY_NPAGE:
 		case ' ':
+		case 'd':
 			start_y += text_lines-2;
 			break;
 		case KEY_PPAGE:
+		case 'u':
 			start_y -= text_lines+2;
 			break;
 		case KEY_HOME:
@@ -597,10 +636,10 @@ void show_scroll_win(WINDOW *main_window,
 			start_x++;
 			break;
 		}
-		if (res == 10 || res == 27 || res == 'q'
-		    || res == KEY_F(F_BACK) || res == KEY_F(F_EXIT)) {
+		if (res == 10 || res == 27 || res == 'q' ||
+			res == KEY_F(F_HELP) || res == KEY_F(F_BACK) ||
+			res == KEY_F(F_EXIT))
 			break;
-		}
 		if (start_y < 0)
 			start_y = 0;
 		if (start_y >= total_lines-text_lines)
diff --git a/kconfig/nconf.h b/kconfig/nconf.h
index 58fbda8f..0d526170 100644
--- a/kconfig/nconf.h
+++ b/kconfig/nconf.h
@@ -89,7 +89,7 @@ void fill_window(WINDOW *win, const char *text);
 int btn_dialog(WINDOW *main_window, const char *msg, int btn_num, ...);
 int dialog_inputbox(WINDOW *main_window,
 		const char *title, const char *prompt,
-		const char *init, char *result, int result_len);
+		const char *init, char **resultp, int *result_len);
 void refresh_all_windows(WINDOW *main_window);
 void show_scroll_win(WINDOW *main_window,
 		const char *title,
diff --git a/kconfig/symbol.c b/kconfig/symbol.c
index 461e1b8a..70c5ee18 100644
--- a/kconfig/symbol.c
+++ b/kconfig/symbol.c
@@ -9,7 +9,6 @@
 #include <regex.h>
 #include <sys/utsname.h>
 
-#define LKC_DIRECT_LINK
 #include "lkc.h"
 
 struct symbol symbol_yes = {
@@ -113,7 +112,7 @@ struct property *sym_get_env_prop(struct symbol *sym)
 	return NULL;
 }
 
-struct property *sym_get_default_prop(struct symbol *sym)
+static struct property *sym_get_default_prop(struct symbol *sym)
 {
 	struct property *prop;
 
@@ -137,7 +136,7 @@ static struct property *sym_get_range_prop(struct symbol *sym)
 	return NULL;
 }
 
-static int sym_get_range_val(struct symbol *sym, int base)
+static long long sym_get_range_val(struct symbol *sym, int base)
 {
 	sym_calc_value(sym);
 	switch (sym->type) {
@@ -150,13 +149,14 @@ static int sym_get_range_val(struct symbol *sym, int base)
 	default:
 		break;
 	}
-	return strtol(sym->curr.val, NULL, base);
+	return strtoll(sym->curr.val, NULL, base);
 }
 
 static void sym_validate_range(struct symbol *sym)
 {
 	struct property *prop;
-	int base, val, val2;
+	int base;
+	long long val, val2;
 	char str[64];
 
 	switch (sym->type) {
@@ -172,7 +172,7 @@ static void sym_validate_range(struct symbol *sym)
 	prop = sym_get_range_prop(sym);
 	if (!prop)
 		return;
-	val = strtol(sym->curr.val, NULL, base);
+	val = strtoll(sym->curr.val, NULL, base);
 	val2 = sym_get_range_val(prop->expr->left.sym, base);
 	if (val >= val2) {
 		val2 = sym_get_range_val(prop->expr->right.sym, base);
@@ -180,12 +180,32 @@ static void sym_validate_range(struct symbol *sym)
 			return;
 	}
 	if (sym->type == S_INT)
-		sprintf(str, "%d", val2);
+		sprintf(str, "%lld", val2);
 	else
-		sprintf(str, "0x%x", val2);
+		sprintf(str, "0x%llx", val2);
 	sym->curr.val = strdup(str);
 }
 
+static 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;
+	}
+}
+
+static void sym_set_all_changed(void)
+{
+	struct symbol *sym;
+	int i;
+
+	for_all_symbols(i, sym)
+		sym_set_changed(sym);
+}
+
 static void sym_calc_visibility(struct symbol *sym)
 {
 	struct property *prop;
@@ -263,11 +283,18 @@ static struct symbol *sym_calc_choice(struct symbol *sym)
 	struct symbol *def_sym;
 	struct property *prop;
 	struct expr *e;
+	int flags;
 
 	/* first calculate all choice values' visibilities */
+	flags = sym->flags;
 	prop = sym_get_choice_prop(sym);
-	expr_list_for_each_sym(prop->expr, e, def_sym)
+	expr_list_for_each_sym(prop->expr, e, def_sym) {
 		sym_calc_visibility(def_sym);
+		if (def_sym->visible != no)
+			flags &= def_sym->flags;
+	}
+
+	sym->flags &= flags | ~SYMBOL_DEF_USER;
 
 	/* is the user choice visible? */
 	def_sym = sym->def[S_DEF_USER].val;
@@ -294,6 +321,14 @@ void sym_calc_value(struct symbol *sym)
 
 	if (sym->flags & SYMBOL_VALID)
 		return;
+
+	if (sym_is_choice_value(sym) &&
+	    sym->flags & SYMBOL_NEED_SET_CHOICE_VALUES) {
+		sym->flags &= ~SYMBOL_NEED_SET_CHOICE_VALUES;
+		prop = sym_get_choice_prop(sym);
+		sym_calc_value(prop_get_symbol(prop));
+	}
+
 	sym->flags |= SYMBOL_VALID;
 
 	oldval = sym->curr;
@@ -419,6 +454,9 @@ void sym_calc_value(struct symbol *sym)
 
 	if (sym->flags & SYMBOL_AUTO)
 		sym->flags &= ~SYMBOL_WRITE;
+
+	if (sym->flags & SYMBOL_NEED_SET_CHOICE_VALUES)
+		set_all_choice_values(sym);
 }
 
 void sym_clear_all_valid(void)
@@ -433,26 +471,6 @@ void sym_clear_all_valid(void)
 		sym_calc_value(modules_sym);
 }
 
-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_set_changed(sym);
-}
-
 bool sym_tristate_within_range(struct symbol *sym, tristate val)
 {
 	int type = sym_get_type(sym);
@@ -577,7 +595,7 @@ bool sym_string_valid(struct symbol *sym, const char *str)
 bool sym_string_within_range(struct symbol *sym, const char *str)
 {
 	struct property *prop;
-	int val;
+	long long val;
 
 	switch (sym->type) {
 	case S_STRING:
@@ -588,7 +606,7 @@ bool sym_string_within_range(struct symbol *sym, const char *str)
 		prop = sym_get_range_prop(sym);
 		if (!prop)
 			return true;
-		val = strtol(str, NULL, 10);
+		val = strtoll(str, NULL, 10);
 		return val >= sym_get_range_val(prop->expr->left.sym, 10) &&
 		       val <= sym_get_range_val(prop->expr->right.sym, 10);
 	case S_HEX:
@@ -597,7 +615,7 @@ bool sym_string_within_range(struct symbol *sym, const char *str)
 		prop = sym_get_range_prop(sym);
 		if (!prop)
 			return true;
-		val = strtol(str, NULL, 16);
+		val = strtoll(str, NULL, 16);
 		return val >= sym_get_range_val(prop->expr->left.sym, 16) &&
 		       val <= sym_get_range_val(prop->expr->right.sym, 16);
 	case S_BOOLEAN:
@@ -650,11 +668,11 @@ bool sym_set_string_value(struct symbol *sym, const char *newval)
 	size = strlen(newval) + 1;
 	if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) {
 		size += 2;
-		sym->def[S_DEF_USER].val = val = malloc(size);
+		sym->def[S_DEF_USER].val = val = xmalloc(size);
 		*val++ = '0';
 		*val++ = 'x';
 	} else if (!oldval || strcmp(oldval, newval))
-		sym->def[S_DEF_USER].val = val = malloc(size);
+		sym->def[S_DEF_USER].val = val = xmalloc(size);
 	else
 		return true;
 
@@ -751,7 +769,8 @@ const char *sym_get_string_value(struct symbol *sym)
 		case no:
 			return "n";
 		case mod:
-			return "m";
+			sym_calc_value(modules_sym);
+			return (modules_sym->curr.tri == no) ? "n" : "m";
 		case yes:
 			return "y";
 		}
@@ -805,7 +824,7 @@ struct symbol *sym_lookup(const char *name, int flags)
 		hash = 0;
 	}
 
-	symbol = malloc(sizeof(*symbol));
+	symbol = xmalloc(sizeof(*symbol));
 	memset(symbol, 0, sizeof(*symbol));
 	symbol->name = new_name;
 	symbol->type = S_UNKNOWN;
@@ -856,7 +875,7 @@ const char *sym_expand_string_value(const char *in)
 	size_t reslen;
 
 	reslen = strlen(in) + 1;
-	res = malloc(reslen);
+	res = xmalloc(reslen);
 	res[0] = '\0';
 
 	while ((src = strchr(in, '$'))) {
@@ -893,38 +912,132 @@ const char *sym_expand_string_value(const char *in)
 	return res;
 }
 
+const char *sym_escape_string_value(const char *in)
+{
+	const char *p;
+	size_t reslen;
+	char *res;
+	size_t l;
+
+	reslen = strlen(in) + strlen("\"\"") + 1;
+
+	p = in;
+	for (;;) {
+		l = strcspn(p, "\"\\");
+		p += l;
+
+		if (p[0] == '\0')
+			break;
+
+		reslen++;
+		p++;
+	}
+
+	res = xmalloc(reslen);
+	res[0] = '\0';
+
+	strcat(res, "\"");
+
+	p = in;
+	for (;;) {
+		l = strcspn(p, "\"\\");
+		strncat(res, p, l);
+		p += l;
+
+		if (p[0] == '\0')
+			break;
+
+		strcat(res, "\\");
+		strncat(res, p++, 1);
+	}
+
+	strcat(res, "\"");
+	return res;
+}
+
+struct sym_match {
+	struct symbol	*sym;
+	off_t		so, eo;
+};
+
+/* Compare matched symbols as thus:
+ * - first, symbols that match exactly
+ * - then, alphabetical sort
+ */
+static int sym_rel_comp(const void *sym1, const void *sym2)
+{
+	const struct sym_match *s1 = sym1;
+	const struct sym_match *s2 = sym2;
+	int exact1, exact2;
+
+	/* Exact match:
+	 * - if matched length on symbol s1 is the length of that symbol,
+	 *   then this symbol should come first;
+	 * - if matched length on symbol s2 is the length of that symbol,
+	 *   then this symbol should come first.
+	 * Note: since the search can be a regexp, both symbols may match
+	 * exactly; if this is the case, we can't decide which comes first,
+	 * and we fallback to sorting alphabetically.
+	 */
+	exact1 = (s1->eo - s1->so) == strlen(s1->sym->name);
+	exact2 = (s2->eo - s2->so) == strlen(s2->sym->name);
+	if (exact1 && !exact2)
+		return -1;
+	if (!exact1 && exact2)
+		return 1;
+
+	/* As a fallback, sort symbols alphabetically */
+	return strcmp(s1->sym->name, s2->sym->name);
+}
+
 struct symbol **sym_re_search(const char *pattern)
 {
 	struct symbol *sym, **sym_arr = NULL;
+	struct sym_match *sym_match_arr = NULL;
 	int i, cnt, size;
 	regex_t re;
+	regmatch_t match[1];
 
 	cnt = size = 0;
 	/* Skip if empty */
 	if (strlen(pattern) == 0)
 		return NULL;
-	if (regcomp(&re, pattern, REG_EXTENDED|REG_NOSUB|REG_ICASE))
+	if (regcomp(&re, pattern, REG_EXTENDED|REG_ICASE))
 		return NULL;
 
 	for_all_symbols(i, sym) {
 		if (sym->flags & SYMBOL_CONST || !sym->name)
 			continue;
-		if (regexec(&re, sym->name, 0, NULL, 0))
+		if (regexec(&re, sym->name, 1, match, 0))
 			continue;
-		if (cnt + 1 >= size) {
-			void *tmp = sym_arr;
+		if (cnt >= size) {
+			void *tmp;
 			size += 16;
-			sym_arr = realloc(sym_arr, size * sizeof(struct symbol *));
-			if (!sym_arr) {
-				free(tmp);
-				return NULL;
-			}
+			tmp = realloc(sym_match_arr, size * sizeof(struct sym_match));
+			if (!tmp)
+				goto sym_re_search_free;
+			sym_match_arr = tmp;
 		}
 		sym_calc_value(sym);
-		sym_arr[cnt++] = sym;
+		/* As regexec returned 0, we know we have a match, so
+		 * we can use match[0].rm_[se]o without further checks
+		 */
+		sym_match_arr[cnt].so = match[0].rm_so;
+		sym_match_arr[cnt].eo = match[0].rm_eo;
+		sym_match_arr[cnt++].sym = sym;
 	}
-	if (sym_arr)
+	if (sym_match_arr) {
+		qsort(sym_match_arr, cnt, sizeof(struct sym_match), sym_rel_comp);
+		sym_arr = malloc((cnt+1) * sizeof(struct symbol));
+		if (!sym_arr)
+			goto sym_re_search_free;
+		for (i = 0; i < cnt; i++)
+			sym_arr[i] = sym_match_arr[i].sym;
 		sym_arr[cnt] = NULL;
+	}
+sym_re_search_free:
+	/* sym_match_arr can be NULL if no match, but free(NULL) is OK */
+	free(sym_match_arr);
 	regfree(&re);
 
 	return sym_arr;
@@ -934,7 +1047,7 @@ struct symbol **sym_re_search(const char *pattern)
  * When we check for recursive dependencies we use a stack to save
  * current state so we can print out relevant info to user.
  * The entries are located on the call stack so no need to free memory.
- * Note inser() remove() must always match to properly clear the stack.
+ * Note insert() remove() must always match to properly clear the stack.
  */
 static struct dep_stack {
 	struct dep_stack *prev, *next;
@@ -1053,6 +1166,10 @@ static struct symbol *sym_check_expr_deps(struct expr *e)
 	case E_NOT:
 		return sym_check_expr_deps(e->left.expr);
 	case E_EQUAL:
+	case E_GEQ:
+	case E_GTH:
+	case E_LEQ:
+	case E_LTH:
 	case E_UNEQUAL:
 		sym = sym_check_deps(e->left.sym);
 		if (sym)
@@ -1178,7 +1295,7 @@ struct property *prop_alloc(enum prop_type type, struct symbol *sym)
 	struct property *prop;
 	struct property **propp;
 
-	prop = malloc(sizeof(*prop));
+	prop = xmalloc(sizeof(*prop));
 	memset(prop, 0, sizeof(*prop));
 	prop->type = type;
 	prop->sym = sym;
@@ -1255,4 +1372,6 @@ static void prop_add_env(const char *env)
 	p = getenv(env);
 	if (p)
 		sym_add_default(sym, p);
+	else
+		menu_warn(current_entry, "environment variable %s undefined", env);
 }
diff --git a/kconfig/util.c b/kconfig/util.c
index 6330cc87..0e760424 100644
--- a/kconfig/util.c
+++ b/kconfig/util.c
@@ -5,6 +5,8 @@
  * Released under the terms of the GNU GPL v2.0.
  */
 
+#include <stdarg.h>
+#include <stdlib.h>
 #include <string.h>
 #include "lkc.h"
 
@@ -21,7 +23,7 @@ struct file *file_lookup(const char *name)
 		}
 	}
 
-	file = malloc(sizeof(*file));
+	file = xmalloc(sizeof(*file));
 	memset(file, 0, sizeof(*file));
 	file->name = file_name;
 	file->next = file_list;
@@ -79,23 +81,13 @@ int file_write_dep(const char *name)
 struct gstr str_new(void)
 {
 	struct gstr gs;
-	gs.s = malloc(sizeof(char) * 64);
+	gs.s = xmalloc(sizeof(char) * 64);
 	gs.len = 64;
 	gs.max_width = 0;
 	strcpy(gs.s, "\0");
 	return gs;
 }
 
-/* Allocate and assign growable string */
-struct gstr str_assign(const char *s)
-{
-	struct gstr gs;
-	gs.s = strdup(s);
-	gs.len = strlen(s) + 1;
-	gs.max_width = 0;
-	return gs;
-}
-
 /* Free storage for growable string */
 void str_free(struct gstr *gs)
 {
@@ -136,3 +128,20 @@ const char *str_get(struct gstr *gs)
 	return gs->s;
 }
 
+void *xmalloc(size_t size)
+{
+	void *p = malloc(size);
+	if (p)
+		return p;
+	fprintf(stderr, "Out of memory.\n");
+	exit(1);
+}
+
+void *xcalloc(size_t nmemb, size_t size)
+{
+	void *p = calloc(nmemb, size);
+	if (p)
+		return p;
+	fprintf(stderr, "Out of memory.\n");
+	exit(1);
+}
diff --git a/kconfig/zconf.gperf b/kconfig/zconf.gperf
index d758a2ad..b6ac02d6 100644
--- a/kconfig/zconf.gperf
+++ b/kconfig/zconf.gperf
@@ -7,18 +7,9 @@
 %pic
 %struct-type
 
-%{
-# ifndef offsetof
-#  include <stddef.h>
-#  ifndef offsetof
-#   define offsetof(st, m) ((size_t)(&((st *)0)->m))
-#  endif
-# endif
-%}
-
 struct kconf_id;
 
-static struct kconf_id *kconf_id_lookup(register const char *str, register unsigned int len);
+static const struct kconf_id *kconf_id_lookup(register const char *str, register unsigned int len);
 
 %%
 mainmenu,	T_MAINMENU,	TF_COMMAND
@@ -53,4 +44,5 @@ on,		T_ON,		TF_PARAM
 modules,	T_OPT_MODULES,	TF_OPTION
 defconfig_list,	T_OPT_DEFCONFIG_LIST,TF_OPTION
 env,		T_OPT_ENV,	TF_OPTION
+allnoconfig_y,	T_OPT_ALLNOCONFIG_Y,TF_OPTION
 %%
diff --git a/kconfig/zconf.l b/kconfig/zconf.l
index b22f884f..200a3fe3 100644
--- a/kconfig/zconf.l
+++ b/kconfig/zconf.l
@@ -1,5 +1,5 @@
-%option backup nostdinit noyywrap never-interactive full ecs
-%option 8bit backup nodefault perf-report perf-report
+%option nostdinit noyywrap never-interactive full ecs
+%option 8bit nodefault perf-report perf-report
 %option noinput
 %x COMMAND HELP STRING PARAM
 %{
@@ -14,7 +14,6 @@
 #include <string.h>
 #include <unistd.h>
 
-#define LKC_DIRECT_LINK
 #include "lkc.h"
 
 #define START_STRSIZE	16
@@ -28,8 +27,8 @@ static char *text;
 static int text_size, text_asize;
 
 struct buffer {
-        struct buffer *parent;
-        YY_BUFFER_STATE state;
+	struct buffer *parent;
+	YY_BUFFER_STATE state;
 };
 
 struct buffer *current_buf;
@@ -41,7 +40,7 @@ static void zconf_endfile(void);
 
 static void new_string(void)
 {
-	text = malloc(START_STRSIZE);
+	text = xmalloc(START_STRSIZE);
 	text_asize = START_STRSIZE;
 	text_size = 0;
 	*text = 0;
@@ -63,13 +62,12 @@ static void append_string(const char *str, int size)
 
 static void alloc_string(const char *str, int size)
 {
-	text = malloc(size + 1);
+	text = xmalloc(size + 1);
 	memcpy(text, str, size);
 	text[size] = 0;
 }
 %}
 
-ws	[ \n\t]
 n	[A-Za-z0-9_]
 
 %%
@@ -96,7 +94,7 @@ n	[A-Za-z0-9_]
 
 <COMMAND>{
 	{n}+	{
-		struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
+		const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
 		BEGIN(PARAM);
 		current_pos.file = current_file;
 		current_pos.lineno = current_file->lineno;
@@ -124,6 +122,10 @@ n	[A-Za-z0-9_]
 	"!"	return T_NOT;
 	"="	return T_EQUAL;
 	"!="	return T_UNEQUAL;
+	"<="	return T_LESS_EQUAL;
+	">="	return T_GREATER_EQUAL;
+	"<"	return T_LESS;
+	">"	return T_GREATER;
 	\"|\'	{
 		str = yytext[0];
 		new_string();
@@ -132,7 +134,7 @@ n	[A-Za-z0-9_]
 	\n	BEGIN(INITIAL); current_file->lineno++; return T_EOL;
 	---	/* ignore */
 	({n}|[-/.])+	{
-		struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
+		const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
 		if (id && id->flags & TF_PARAM) {
 			zconflval.id = id;
 			return id->token;
@@ -143,7 +145,12 @@ n	[A-Za-z0-9_]
 	}
 	#.*	/* comment */
 	\\\n	current_file->lineno++;
-	.
+	[[:blank:]]+
+	.	{
+		fprintf(stderr,
+		        "%s:%d:warning: ignoring unsupported character '%c'\n",
+		        zconf_curname(), zconf_lineno(), *yytext);
+	}
 	<<EOF>> {
 		BEGIN(INITIAL);
 	}
@@ -289,7 +296,7 @@ void zconf_initscan(const char *name)
 		exit(1);
 	}
 
-	current_buf = malloc(sizeof(*current_buf));
+	current_buf = xmalloc(sizeof(*current_buf));
 	memset(current_buf, 0, sizeof(*current_buf));
 
 	current_file = file_lookup(name);
@@ -300,7 +307,7 @@ void zconf_nextfile(const char *name)
 {
 	struct file *iter;
 	struct file *file = file_lookup(name);
-	struct buffer *buf = malloc(sizeof(*buf));
+	struct buffer *buf = xmalloc(sizeof(*buf));
 	memset(buf, 0, sizeof(*buf));
 
 	current_buf->state = YY_CURRENT_BUFFER;
diff --git a/kconfig/zconf.y b/kconfig/zconf.y
index 2b5c3a65..c3f9a5fc 100644
--- a/kconfig/zconf.y
+++ b/kconfig/zconf.y
@@ -11,7 +11,6 @@
 #include <string.h>
 #include <stdbool.h>
 
-#define LKC_DIRECT_LINK
 #include "lkc.h"
 
 #define printd(mask, fmt...) if (cdebug & (mask)) printf(fmt)
@@ -25,16 +24,12 @@ extern int zconflex(void);
 static void zconfprint(const char *err, ...);
 static void zconf_error(const char *err, ...);
 static void zconferror(const char *err);
-static bool zconf_endtoken(struct kconf_id *id, int starttoken, int endtoken);
+static bool zconf_endtoken(const struct kconf_id *id, int starttoken, int endtoken);
 
 struct symbol *symbol_hash[SYMBOL_HASHSIZE];
 
 static struct menu *current_menu, *current_entry;
 
-#define YYDEBUG 0
-#if YYDEBUG
-#define YYERROR_VERBOSE
-#endif
 %}
 %expect 30
 
@@ -45,7 +40,7 @@ static struct menu *current_menu, *current_entry;
 	struct symbol *symbol;
 	struct expr *expr;
 	struct menu *menu;
-	struct kconf_id *id;
+	const struct kconf_id *id;
 }
 
 %token <id>T_MAINMENU
@@ -74,6 +69,10 @@ static struct menu *current_menu, *current_entry;
 %token <string> T_WORD
 %token <string> T_WORD_QUOTE
 %token T_UNEQUAL
+%token T_LESS
+%token T_LESS_EQUAL
+%token T_GREATER
+%token T_GREATER_EQUAL
 %token T_CLOSE_PAREN
 %token T_OPEN_PAREN
 %token T_EOL
@@ -81,6 +80,7 @@ static struct menu *current_menu, *current_entry;
 %left T_OR
 %left T_AND
 %left T_EQUAL T_UNEQUAL
+%left T_LESS T_LESS_EQUAL T_GREATER T_GREATER_EQUAL
 %nonassoc T_NOT
 
 %type <string> prompt
@@ -229,7 +229,7 @@ symbol_option_list:
 	  /* empty */
 	| symbol_option_list T_WORD symbol_option_arg
 {
-	struct kconf_id *id = kconf_id_lookup($2, strlen($2));
+	const struct kconf_id *id = kconf_id_lookup($2, strlen($2));
 	if (id && id->flags & TF_OPTION)
 		menu_add_option(id->token, $3);
 	else
@@ -472,6 +472,10 @@ if_expr:  /* empty */			{ $$ = NULL; }
 ;
 
 expr:	  symbol				{ $$ = expr_alloc_symbol($1); }
+	| symbol T_LESS symbol			{ $$ = expr_alloc_comp(E_LTH, $1, $3); }
+	| symbol T_LESS_EQUAL symbol		{ $$ = expr_alloc_comp(E_LEQ, $1, $3); }
+	| symbol T_GREATER symbol		{ $$ = expr_alloc_comp(E_GTH, $1, $3); }
+	| symbol T_GREATER_EQUAL symbol		{ $$ = expr_alloc_comp(E_GEQ, $1, $3); }
 	| symbol T_EQUAL symbol			{ $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
 	| symbol T_UNEQUAL symbol		{ $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
 	| T_OPEN_PAREN expr T_CLOSE_PAREN	{ $$ = $2; }
@@ -498,10 +502,7 @@ void conf_parse(const char *name)
 
 	sym_init();
 	_menu_init();
-	modules_sym = sym_lookup(NULL, 0);
-	modules_sym->type = S_BOOLEAN;
-	modules_sym->flags |= SYMBOL_AUTO;
-	rootmenu.prompt = menu_add_prompt(P_MENU, PACKAGE " Configuration", NULL);
+	rootmenu.prompt = menu_add_prompt(P_MENU, "Crosstool-NG Configuration", NULL);
 
 #if YYDEBUG
 	if (getenv("ZCONF_DEBUG"))
@@ -510,12 +511,8 @@ void conf_parse(const char *name)
 	zconfparse();
 	if (zconfnerrs)
 		exit(1);
-	if (!modules_sym->prop) {
-		struct property *prop;
-
-		prop = prop_alloc(P_DEFAULT, modules_sym);
-		prop->expr = expr_alloc_symbol(sym_lookup("MODULES", 0));
-	}
+	if (!modules_sym)
+		modules_sym = sym_find( "n" );
 
 	rootmenu.prompt->text = _(rootmenu.prompt->text);
 	rootmenu.prompt->text = sym_expand_string_value(rootmenu.prompt->text);
@@ -524,7 +521,7 @@ void conf_parse(const char *name)
 	for_all_symbols(i, sym) {
 		if (sym_check_deps(sym))
 			zconfnerrs++;
-        }
+	}
 	if (zconfnerrs)
 		exit(1);
 	sym_set_change_count(1);
@@ -545,7 +542,7 @@ static const char *zconf_tokenname(int token)
 	return "<token>";
 }
 
-static bool zconf_endtoken(struct kconf_id *id, int starttoken, int endtoken)
+static bool zconf_endtoken(const struct kconf_id *id, int starttoken, int endtoken)
 {
 	if (id->token != endtoken) {
 		zconf_error("unexpected '%s' within %s block",
@@ -590,9 +587,7 @@ static void zconf_error(const char *err, ...)
 
 static void zconferror(const char *err)
 {
-#if YYDEBUG
 	fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
-#endif
 }
 
 static void print_quoted_string(FILE *out, const char *str)
@@ -741,7 +736,7 @@ void zconfdump(FILE *out)
 	}
 }
 
-#include "lex.zconf.c"
+#include "zconf.lex.c"
 #include "util.c"
 #include "confdata.c"
 #include "expr.c"