Update LinuxKernelConf to 1.3, latest available.

14 files changed, 542 insertions, 257 deletions

diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 7e257be..5a0d7e5 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -1,5 +1,5 @@
-VERSION=1.2
+VERSION=1.3
 CC=gcc
 CXX=g++
-CFLAGS=-O2 -Wall -g -fPIC
+CFLAGS=-O0 -Wall -g -fPIC
 CXXFLAGS=$(CFLAGS) -I$(HOSTQTDIR)/include
@@ -8,25 +8,9 @@ LXXFLAGS=$(LDFLAGS) -L$(HOSTQTDIR)/lib -Wl,-rpath,$(HOSTQTDIR)/lib
 LEX=flex
+LFLAGS=-L
 YACC=bison
-YFLAGS=-d -t #-v
+YFLAGS=-l
+#YFLAGS=-d -t -v -l
 ifndef HOSTQTDIR
-ifeq ($(shell if [ -e /usr/share/qt ]; then echo foundit; fi),foundit)
 HOSTQTDIR=/usr/share/qt
-else
-ifeq ($(shell if [ -e /usr/lib/qt ]; then echo foundit; fi),foundit)
-HOSTQTDIR=/usr/lib/qt
-endif
-endif
-endif
-
-ifndef QTLIB
-ifeq ($(shell if [ -e $(HOSTQTDIR)/lib/libqt-mt.so ]; then echo foundit; fi),foundit)
-QTLIB=-lqt-mt
-else
-ifneq ($(shell if [ -e $(HOSTQTDIR)/lib/libqt.so ]; then echo foundit; fi),foundit)
-$(warning Unable to locate libqt.so!)
 endif
-QTLIB=-lqt
-endif
-endif
-
 MOC=$(wildcard $(HOSTQTDIR)/bin/moc)
@@ -37,8 +21,8 @@ mconf_SRC=mconf.c $(parse_SRC)
 qconf_SRC=qconf.cc
-lkcc_SRC=cml1.y cml1.l help.l cml1.h expr1.c
 HDR=expr.h lkc.h lkc_proto.h qconf.h
-OTHER=README lkc_spec lkc_overview Makefile.kernel convert-all prepare-all.diff fixup-all.diff \
+OTHER=README lkc-language.txt Makefile.kernel \
         kconfig.i extconf.rb example
-INST=zconf.y zconf.l confdata.c expr.c symbol.c menu.c conf.c mconf.c qconf.cc kconfig_load.c images.c $(parse_SRC) $(HDR)
-INSTGEN=lex.zconf.c zconf.tab.c zconf.tab.h
+INST=zconf.y zconf.l confdata.c expr.c symbol.c menu.c \
+        conf.c mconf.c qconf.cc kconfig_load.c images.c $(HDR)
+INSTGEN=lex.zconf.c zconf.tab.c
 
@@ -52,3 +36,3 @@ endif
 
-SRC=$(conf_SRC) $(mconf_SRC) $(qconf_SRC) $(lkcc_SRC)
+SRC=$(conf_SRC) $(mconf_SRC) $(qconf_SRC)
 CSRC=$(filter %.c, $(SRC))
@@ -78,24 +62,10 @@ qconf_OBJ=$(filter %.o, \
                         $(qconf_SRC))))))
-lkcc_OBJ=$(filter %.o, \
-                $(patsubst %.c,%.o, \
-                $(patsubst %.y,%.tab.o, \
-                $(patsubst %.l,lex.%.o, \
-                        $(lkcc_SRC)))))
-OBJ=$(conf_OBJ) $(mconf_OBJ) $(qconf_OBJ) $(lkcc_OBJ)
+OBJ=$(conf_OBJ) $(mconf_OBJ) $(qconf_OBJ)
 
 ifeq ($(MOC),)
-all: lkcc conf mconf
+all: conf mconf
 else
-all: lkcc conf mconf qconf libkconfig.so
+all: conf mconf qconf libkconfig.so
 endif
 
-lex.help.c: help.l
-lex.help.o: lex.help.c cml1.h expr.h
-lex.cml1.c: cml1.l
-lex.cml1.o: lex.cml1.c cml1.tab.h cml1.h expr.h
-cml1.tab.c: cml1.y
-cml1.tab.h: cml1.y
-cml1.tab.o: cml1.tab.c cml1.h expr.h
-expr1.o: expr1.c expr.h
-
 lkc_deps := lkc.h lkc_proto.h lkc_defs.h expr.h
@@ -130,9 +100,6 @@ qconf:
 else
-qconf: $(qconf_OBJ) libkconfig.so
-        $(CXX) $(LXXFLAGS) $^ $(QTLIB) -o $@
+qconf: $(qconf_OBJ)
+        $(CXX) $(LXXFLAGS) $^ -lqt -o $@
 endif
 
-lkcc: $(lkcc_OBJ)
-        $(CC) $(LDFLAGS) $^ -o $@
-
 libkconfig.so: $(parse_OBJ)
@@ -144,3 +111,4 @@ lkc_defs.h: lkc_proto.h
 clean:
-        rm -f $(OBJ) lkcc conf qconf mconf *.moc lex.* *.tab.? *.output
+        rm -f $(OBJ) conf qconf mconf *.moc lex.* *.tab.? *.output
+        rm -rf .ruby .python
 
@@ -150,3 +118,3 @@ tgz:
         cp -ra Makefile $(sort $(SRC) $(HDR) $(OTHER) $(INST)) tmp/lkc-$(VERSION)
-        tar -cpvz -C tmp -f lkc-$(VERSION).tar.gz lkc-$(VERSION)
+        tar -cpvz -C tmp --exclude CVS -f lkc-$(VERSION).tar.gz lkc-$(VERSION)
         rm -rf tmp
@@ -169,20 +137,11 @@ lex.%.c: %.l
 ifdef KERNELSRC
-install: lkcc $(INSTGEN)
-        set -x; mkdir $(KERNELSRC)/scripts/kconfig; \
-        cp $(sort $(INST)) $(KERNELSRC)/scripts/kconfig; \
+install: $(INSTGEN)
+        set -x; cp $(sort $(INST)) $(KERNELSRC)/scripts/kconfig; \
         for f in $(INSTGEN); do cp $$f $(KERNELSRC)/scripts/kconfig/$${f}_shipped; done; \
-        cp Makefile.kernel $(KERNELSRC)/scripts/kconfig/Makefile; \
-        LKCSRC=$$PWD; export LKCSRC; \
-        cd $(KERNELSRC); \
-        patch -p0 -N < $$LKCSRC/prepare-all.diff; \
-        sh $$LKCSRC/convert-all; \
-        patch -p0 -N < $$LKCSRC/fixup-all.diff
-
-        #cp Makefile $(KERNELSRC)/scripts/kconfig/Makefile; \
-
-uninstall:
-        patch -p0 -N -R -d $(KERNELSRC) < prepare-all.diff; \
-        cd $(KERNELSRC); \
-        find -name "Kconfig*" | xargs rm; \
-        rm -rf scripts/kconfig log.*
+        cp Makefile.kernel $(KERNELSRC)/scripts/kconfig/Makefile
+
+diff: $(INSTGEN)
+        for f in $(sort $(INST)); do diff -u $(KERNELSRC)/scripts/kconfig/$$f $$f; done; \
+        for f in $(INSTGEN); do diff -u $(KERNELSRC)/scripts/kconfig/$${f}_shipped $$f; done; \
+        diff -u $(KERNELSRC)/scripts/kconfig/Makefile Makefile.kernel
 else
@@ -206,2 +165,17 @@ ruby: .ruby libkconfig.so .ruby/kconfig.so
 
-.PHONY: all tgz clean ruby
+
+PYTHON_INCLUDE=$(shell python -c "import sys; print '-I'+sys.prefix+'/include/python'+sys.version[:3]")
+
+python: .python .python/kconfig.py .python/_kconfig.so
+
+.python:
+        mkdir .python
+
+.python/kconfig_wrap.c .python/kconfig.py: kconfig.i kconfig_load.c expr.h lkc_proto.h
+        swig -python -o .python/kconfig_wrap.c kconfig.i
+
+.python/_kconfig.so: .python/kconfig_wrap.c
+        cd .python; $(CC) $(CFLAGS) -shared kconfig_wrap.c -o _kconfig.so -I.. $(PYTHON_INCLUDE)
+
+
+.PHONY: all tgz clean ruby python
diff --git a/scripts/kconfig/Makefile.kernel b/scripts/kconfig/Makefile.kernel
index beb4dcf..22724a7 100644
--- a/scripts/kconfig/Makefile.kernel
+++ b/scripts/kconfig/Makefile.kernel
@@ -25,10 +25,2 @@ include $(TOPDIR)/Rules.make
 
-# QT needs some extra effort...
-ifndef QTDIR
-        QTDIR   := /usr/share/qt
-endif
-
-# Executable to generate the .moc file
-MOC=$(wildcard $(QTDIR)/bin/moc)
-
 # generated files seem to need this to find local include files
@@ -37,4 +29,4 @@ HOSTCFLAGS_zconf.tab.o	:= -I$(src)
 
-        HOSTLOADLIBES_qconf:= -L$(QTDIR)/lib -Wl,-rpath,$(QTDIR)/lib -lqt -ldl
-        HOSTCXXFLAGS_qconf.o:= -I$(QTDIR)/include 
+        HOSTLOADLIBES_qconf= -L$(QTDIR)/lib -Wl,-rpath,$(QTDIR)/lib -l$(QTLIB) -ldl
+        HOSTCXXFLAGS_qconf.o= -I$(QTDIR)/include 
 
@@ -44,10 +36,28 @@ $(obj)/qconf.o: $(obj)/.tmp_qtcheck
 
+ifeq ($(MAKECMDGOALS),$(obj)/qconf)
+MOC = $(QTDIR)/bin/moc
+-include $(obj)/.tmp_qtcheck
+
+# QT needs some extra effort...
 $(obj)/.tmp_qtcheck:
-ifeq ($(MOC),)
-        @echo Unable to find the QT installation. Please make sure that the
-        @echo QT development package is correctly installed and the QTDIR
-        @echo environment variable is set to the correct location.
-        @false
-else
-        @touch $@
+        @set -e; for d in $$QTDIR /usr/share/qt /usr/lib/qt3; do \
+          if [ -f $$d/include/qconfig.h ]; then DIR=$$d; break; fi; \
+        done; \
+        if [ -z "$$DIR" ]; then \
+          echo "*"; \
+          echo "* Unable to find the QT installation. Please make sure that the"; \
+          echo "* QT development package is correctly installed and the QTDIR"; \
+          echo "* environment variable is set to the correct location."; \
+          echo "*"; \
+          false; \
+        fi; \
+        LIB=qt; \
+        if [ -f $$DIR/lib/libqt-mt.so ]; then LIB=qt-mt; fi; \
+        echo "QTDIR=$$DIR" > $@; echo "QTLIB=$$LIB" >> $@; \
+        if [ ! -x $$DIR/bin/moc -a -x /usr/bin/moc ]; then \
+          echo "*"; \
+          echo "* Unable to find $$DIR/bin/moc, using /usr/bin/moc instead."; \
+          echo "*"; \
+          echo "MOC=/usr/bin/moc" >> $@; \
+        fi
 endif
diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index 74c94c2..1602d5f 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -117,2 +117,3 @@ static void conf_askvalue(struct symbol *sym, const char *def)
         case ask_all:
+                fflush(stdout);
                 fgets(line, 128, stdin);
@@ -344,2 +345,4 @@ static int conf_choice(struct menu *menu)
                 case ask_all:
+                        if (is_new)
+                                sym->flags |= SYMBOL_NEW;
                         conf_askvalue(sym, menu_get_prompt(def_menu));
@@ -359,3 +362,3 @@ static int conf_choice(struct menu *menu)
                 if (line[0]) {
-                        len = strlen(line) - 1;
+                        len = strlen(line);
                         line[len] = 0;
@@ -366,3 +369,3 @@ static int conf_choice(struct menu *menu)
                                         continue;
-                                if (!strncmp(line, menu_get_prompt(cmenu), len)) {
+                                if (!strncasecmp(line, menu_get_prompt(cmenu), len)) {
                                         def_menu = cmenu;
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 0f5fd97..9bf7af9 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -5,4 +5,4 @@
 
+#include <sys/stat.h>
 #include <ctype.h>
-#include <limits.h>
 #include <stdio.h>
@@ -16,3 +16,2 @@
 const char conf_def_filename[] = ".config";
-char conf_filename[PATH_MAX+1];
 
@@ -57,3 +56,14 @@ char *conf_get_default_confname(void)
 {
-        return conf_expand_value(conf_defname);
+        struct stat buf;
+        static char fullname[PATH_MAX+1];
+        char *env, *name;
+
+        name = conf_expand_value(conf_defname);
+        env = getenv(SRCTREE);
+        if (env) {
+                sprintf(fullname, "%s/%s", env, name);
+                if (!stat(fullname, &buf))
+                        return fullname;
+        }
+        return name;
 }
@@ -63,3 +73,3 @@ int conf_read(const char *name)
         FILE *in = NULL;
-        char line[128];
+        char line[1024];
         char *p, *p2;
@@ -72,5 +82,3 @@ int conf_read(const char *name)
         if (name) {
-                in = fopen(name, "r");
-                if (in)
-                        strcpy(conf_filename, name);
+                in = zconf_fopen(name);
         } else {
@@ -79,3 +87,3 @@ int conf_read(const char *name)
                         name = conf_expand_value(name);
-                        in = fopen(name, "r");
+                        in = zconf_fopen(name);
                         if (in) {
@@ -93,3 +101,4 @@ int conf_read(const char *name)
         for_all_symbols(i, sym) {
-                sym->flags |= SYMBOL_NEW;
+                sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED;
+                sym->flags &= ~SYMBOL_VALID;
                 switch (sym->type) {
@@ -98,8 +107,7 @@ int conf_read(const char *name)
                 case S_STRING:
-                        if (S_VAL(sym->def)) {
+                        if (S_VAL(sym->def))
                                 free(S_VAL(sym->def));
-                                S_VAL(sym->def) = NULL;
-                        }
                 default:
-                        ;
+                        S_VAL(sym->def) = NULL;
+                        S_TRI(sym->def) = no;
                 }
@@ -107,3 +115,3 @@ int conf_read(const char *name)
 
-        while (fgets(line, 128, in)) {
+        while (fgets(line, sizeof(line), in)) {
                 lineno++;
@@ -119,3 +127,2 @@ int conf_read(const char *name)
                                 continue;
-                        //printf("%s -> n\n", line + 9);
                         sym = sym_lookup(line + 9, 0);
@@ -141,3 +148,2 @@ int conf_read(const char *name)
                                 *p2 = 0;
-                        //printf("%s -> %s\n", line + 7, p);
                         sym = sym_find(line + 7);
@@ -148,12 +154,19 @@ int conf_read(const char *name)
                         switch (sym->type) {
-                        case S_BOOLEAN:
-                                sym->def = symbol_yes.curr;
-                                sym->flags &= ~SYMBOL_NEW;
-                                break;
                         case S_TRISTATE:
-                                if (p[0] == 'm')
-                                        sym->def = symbol_mod.curr;
-                                else
-                                        sym->def = symbol_yes.curr;
-                                sym->flags &= ~SYMBOL_NEW;
+                                if (p[0] == 'm') {
+                                        S_TRI(sym->def) = mod;
+                                        sym->flags &= ~SYMBOL_NEW;
+                                        break;
+                                }
+                        case S_BOOLEAN:
+                                if (p[0] == 'y') {
+                                        S_TRI(sym->def) = yes;
+                                        sym->flags &= ~SYMBOL_NEW;
+                                        break;
+                                }
+                                if (p[0] == 'n') {
+                                        S_TRI(sym->def) = no;
+                                        sym->flags &= ~SYMBOL_NEW;
+                                        break;
+                                }
                                 break;
@@ -169,2 +182,6 @@ int conf_read(const char *name)
                                 }
+                                if (!p2) {
+                                        fprintf(stderr, "%s:%d: invalid string found\n", name, lineno);
+                                        exit(1);
+                                }
                         case S_INT:
@@ -174,4 +191,6 @@ int conf_read(const char *name)
                                         sym->flags &= ~SYMBOL_NEW;
-                                } else
-                                        fprintf(stderr, "%s:%d:symbol value '%s' invalid for %s\n", name, lineno, p, sym->name);
+                                } else {
+                                        fprintf(stderr, "%s:%d: symbol value '%s' invalid for %s\n", name, lineno, p, sym->name);
+                                        exit(1);
+                                }
                                 break;
@@ -354,3 +373,2 @@ int conf_write(const char *name)
                 return 1;
-        strcpy(conf_filename, name);
 
diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
index fd9c32a..896a296 100644
--- a/scripts/kconfig/expr.h
+++ b/scripts/kconfig/expr.h
@@ -168,2 +168,3 @@ struct menu {
         struct expr *dep;
+        unsigned int flags;
         //char *help;
@@ -171,5 +172,7 @@ struct menu {
         int lineno;
-        //void *data;
+        void *data;
 };
 
+        #define MENU_CHANGED    0x0001
+
 #ifndef SWIG
diff --git a/scripts/kconfig/kconfig.i b/scripts/kconfig/kconfig.i
index 699cb13..77405fc 100644
--- a/scripts/kconfig/kconfig.i
+++ b/scripts/kconfig/kconfig.i
@@ -33,2 +33,7 @@ static void expr_to_s_help(void *data, const char *str)
 
+#ifdef SWIGPYTHON
+%rename (Property) property;
+%rename (default) def;
+#endif
+
 %immutable;
diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h
index 688945b..cdd04a9 100644
--- a/scripts/kconfig/lkc.h
+++ b/scripts/kconfig/lkc.h
@@ -23,3 +23,4 @@ extern "C" {
 
-void symbol_end(char *help);
+#define SRCTREE "srctree"
+
 int zconfparse(void);
@@ -29,2 +30,3 @@ extern int zconfdebug;
 void zconf_starthelp(void);
+FILE *zconf_fopen(const char *name);
 void zconf_initscan(const char *name);
@@ -63,2 +65,3 @@ void sym_init(void);
 void sym_clear_all_valid(void);
+void sym_set_changed(struct symbol *sym);
 
diff --git a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c
index dec8603..eba5ff7 100644
--- a/scripts/kconfig/mconf.c
+++ b/scripts/kconfig/mconf.c
@@ -3,2 +3,5 @@
  * Released under the terms of the GNU GPL v2.0.
+ *
+ * Introduced single menu mode (show all sub-menus in one large tree).
+ * 2002-11-06 Petr Baudis <pasky@ucw.cz>
  */
@@ -10,2 +13,3 @@
 #include <fcntl.h>
+#include <limits.h>
 #include <signal.h>
@@ -14,2 +18,3 @@
 #include <string.h>
+#include <termios.h>
 #include <unistd.h>
@@ -46,3 +51,3 @@ setmod_text[] =
 nohelp_text[] =
-        "There is no help available for this option.\n",
+        "There is no help available for this kernel option.\n",
 load_config_text[] =
@@ -53,3 +58,3 @@ load_config_help[] =
         "\n"
-        "For various reasons, one may wish to keep several different\n"
+        "For various reasons, one may wish to keep several different kernel\n"
         "configurations available on a single machine.\n"
@@ -57,3 +62,3 @@ load_config_help[] =
         "If you have saved a previous configuration in a file other than the\n"
-        "default, entering the name of the file here will allow you\n"
+        "kernel's default, entering the name of the file here will allow you\n"
         "to modify that configuration.\n"
@@ -67,3 +72,3 @@ save_config_help[] =
         "\n"
-        "For various reasons, one may wish to keep different\n"
+        "For various reasons, one may wish to keep different kernel\n"
         "configurations available on a single machine.\n"
@@ -80,4 +85,6 @@ static char buf[4096], *bufptr = buf;
 static char input_buf[4096];
+static char filename[PATH_MAX+1] = ".config";
 static char *args[1024], **argptr = args;
 static int indent = 0;
+static struct termios ios_org;
 static int rows, cols;
@@ -86,2 +93,3 @@ static int child_count;
 static int do_resize;
+static int single_menu_mode;
 
@@ -105,2 +113,3 @@ static void init_wsize(void)
         struct winsize ws;
+        char *env;
 
@@ -112,2 +121,16 @@ static void init_wsize(void)
                 cols = ws.ws_col;
+                if (!rows) {
+                        env = getenv("LINES");
+                        if (env)
+                                rows = atoi(env);
+                        if (!rows)
+                                rows = 24;
+                }
+                if (!cols) {
+                        env = getenv("COLUMNS");
+                        if (env)
+                                cols = atoi(env);
+                        if (!cols)
+                                cols = 80;
+                }
         }
@@ -276,6 +299,16 @@ static void build_conf(struct menu *menu)
                                 cprint("m%p", menu);
-                                if (menu->parent != &rootmenu)
-                                        cprint1("   %*c", indent + 1, ' ');
-                                cprint1("%s  --->", prompt);
+
+                                if (single_menu_mode) {
+                                        cprint1("%s%*c%s",
+                                                menu->data ? "-->" : "++>",
+                                                indent + 1, ' ', prompt);
+                                } else {
+                                        if (menu->parent != &rootmenu)
+                                                cprint1("   %*c", indent + 1, ' ');
+                                        cprint1("%s  --->", prompt);
+                                }
+
                                 cprint_done();
+                                if (single_menu_mode && menu->data)
+                                        goto conf_childs;
                                 return;
@@ -394,2 +427,3 @@ static void conf(struct menu *menu)
 
+        unlink("lxdialog.scrltmp");
         active_entry[0] = 0;
@@ -444,3 +478,6 @@ static void conf(struct menu *menu)
                         case 'm':
-                                conf(submenu);
+                                if (single_menu_mode)
+                                        submenu->data = (void *) !submenu->data;
+                                else
+                                        conf(submenu);
                                 break;
@@ -486,2 +523,4 @@ static void conf(struct menu *menu)
                                 sym_toggle_tristate_value(sym);
+                        else if (type == 'm')
+                                conf(submenu);
                         break;
@@ -520,7 +559,15 @@ static void show_help(struct menu *menu)
         const char *help;
+        char *helptext;
+        struct symbol *sym = menu->sym;
 
-        help = menu->sym->help;
+        help = sym->help;
         if (!help)
                 help = nohelp_text;
-        show_helptext(menu_get_prompt(menu), help);
+        if (sym->name) {
+                helptext = malloc(strlen(sym->name) + strlen(help) + 16);
+                sprintf(helptext, "CONFIG_%s:\n\n%s", sym->name, help);
+                show_helptext(menu_get_prompt(menu), helptext);
+                free(helptext);
+        } else
+                show_helptext(menu_get_prompt(menu), help);
 }
@@ -633,3 +680,3 @@ static void conf_load(void)
                 cprint("55");
-                cprint("%s", conf_filename);
+                cprint("%s", filename);
                 stat = exec_conf();
@@ -662,3 +709,3 @@ static void conf_save(void)
                 cprint("55");
-                cprint("%s", conf_filename);
+                cprint("%s", filename);
                 stat = exec_conf();
@@ -681,5 +728,15 @@ static void conf_save(void)
 
+static void conf_cleanup(void)
+{
+        tcsetattr(1, TCSAFLUSH, &ios_org);
+        unlink(".help.tmp");
+        unlink("lxdialog.scrltmp");
+}
+
 int main(int ac, char **av)
 {
+        struct symbol *sym;
+        char *mode;
         int stat;
+
         conf_parse(av[1]);
@@ -687,4 +744,15 @@ int main(int ac, char **av)
 
-        sprintf(menu_backtitle, "Configuration");
+        sym = sym_lookup("KERNELRELEASE", 0);
+        sym_calc_value(sym);
+        sprintf(menu_backtitle, "Linux Kernel v%s Configuration",
+                sym_get_string_value(sym));
+
+        mode = getenv("MENUCONFIG_MODE");
+        if (mode) {
+                if (!strcasecmp(mode, "single_menu"))
+                        single_menu_mode = 1;
+        }
 
+        tcgetattr(1, &ios_org);
+        atexit(conf_cleanup);
         init_wsize();
@@ -704,6 +772,7 @@ int main(int ac, char **av)
                 printf("\n\n"
-                        "*** End of configuration.\n"
-                        "*** Check the top-level Makefile for additional configuration.\n");
+                        "*** End of Linux kernel configuration.\n"
+                        "*** Check the top-level Makefile for additional configuration.\n"
+                        "*** Next, you may run 'make bzImage', 'make bzdisk', or 'make install'.\n\n");
         } else
-                printf("\n\nYour configuration changes were NOT saved.\n\n");
+                printf("\n\nYour kernel configuration changes were NOT saved.\n\n");
 
diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c
index 4595110..24be0ec 100644
--- a/scripts/kconfig/menu.c
+++ b/scripts/kconfig/menu.c
@@ -292,3 +292,3 @@ int file_write_dep(const char *name)
         if (!name)
-                name = "..config.cmd";
+                name = ".config.cmd";
         out = fopen("..config.tmp", "w");
diff --git a/scripts/kconfig/qconf.cc b/scripts/kconfig/qconf.cc
index feefa1c..bed541d 100644
--- a/scripts/kconfig/qconf.cc
+++ b/scripts/kconfig/qconf.cc
@@ -19,2 +19,6 @@
 #include <qregexp.h>
+#if QT_VERSION >= 300
+#include <qsettings.h>
+#endif
+
 #include <stdlib.h>
@@ -28,2 +32,5 @@
 static QApplication *configApp;
+#if QT_VERSION >= 300
+static QSettings *configSettings;
+#endif
 
@@ -75,5 +82,13 @@ static void updateMenuList(P* parent, struct menu* menu)
                         if (!item || item->menu != child)
-                                item = new ConfigItem(parent, last, child);
-                        item->visible = visible;
-                        item->updateMenu();
+                                item = new ConfigItem(parent, last, child, visible);
+                        else {
+                                item->visible = visible;
+                                if (item->updateNeeded()) {
+                                        ConfigItem* i = (ConfigItem*)child->data;
+                                        for (; i; i = i->nextItem) {
+                                                i->updateMenu();
+                                        }
+                                } else if (list->updateAll)
+                                        item->updateMenu();
+                        }
 
@@ -122,10 +137,4 @@ void ConfigItem::updateMenu(void)
         tristate expr;
-        bool update;
 
         list = listView();
-        update = doInit;
-        if (update)
-                doInit = false;
-        else
-                update = list->updateAll;
 
@@ -133,11 +142,9 @@ void ConfigItem::updateMenu(void)
         if (!sym) {
-                if (update) {
-                        setText(promptColIdx, menu_get_prompt(menu));
-                        ptype = menu->prompt ? menu->prompt->type : P_UNKNOWN;
-                        if ((ptype == P_ROOTMENU || ptype == P_MENU) &&
-                            (list->mode == singleMode || list->mode == symbolMode))
-                                setPixmap(promptColIdx, list->menuPix);
-                        else
-                                setPixmap(promptColIdx, 0);
-                }
+                setText(promptColIdx, menu_get_prompt(menu));
+                ptype = menu->prompt ? menu->prompt->type : P_UNKNOWN;
+                if ((ptype == P_ROOTMENU || ptype == P_MENU) &&
+                    (list->mode == singleMode || list->mode == symbolMode))
+                        setPixmap(promptColIdx, list->menuPix);
+                else
+                        setPixmap(promptColIdx, 0);
                 return;
@@ -145,9 +152,3 @@ void ConfigItem::updateMenu(void)
 
-        sym_calc_value(sym);
-        if (!(sym->flags & SYMBOL_CHANGED) && !update)
-                return;
-
-        sym->flags &= ~SYMBOL_CHANGED;
-
-        setText(nameColIdx, menu->sym->name);
+        setText(nameColIdx, sym->name);
 
@@ -206,3 +207,5 @@ void ConfigItem::updateMenu(void)
 #if QT_VERSION >= 300
-                setRenameEnabled(list->mapIdx(dataColIdx), TRUE);
+                int i = list->mapIdx(dataColIdx);
+                if (i >= 0)
+                        setRenameEnabled(i, TRUE);
 #endif
@@ -220,2 +223,14 @@ void ConfigItem::updateMenu(void)
 
+bool ConfigItem::updateNeeded(void)
+{
+        struct symbol* sym = menu->sym;
+        if (sym)
+                sym_calc_value(sym);
+        if (menu->flags & MENU_CHANGED) {
+                menu->flags &= ~MENU_CHANGED;
+                return true;
+        }
+        return false;
+}
+
 void ConfigItem::paintCell(QPainter* p, const QColorGroup& cg, int column, int width, int align)
@@ -239,9 +254,10 @@ void ConfigItem::init(void)
         ConfigList* list = listView();
-#if QT_VERSION < 300
-        visible = TRUE;
-#endif
-        //menu->data = this;
+        nextItem = (ConfigItem*)menu->data;
+        menu->data = this;
+
         if (list->mode != fullMode)
                 setOpen(TRUE);
-        doInit= true;
+        if (menu->sym)
+                sym_calc_value(menu->sym);
+        updateMenu();
 }
@@ -253,3 +269,9 @@ ConfigItem::~ConfigItem(void)
 {
-        //menu->data = 0;
+        ConfigItem** ip = &(ConfigItem*)menu->data;
+        for (; *ip; ip = &(*ip)->nextItem) {
+                if (*ip == this) {
+                        *ip = nextItem;
+                        break;
+                }
+        }
 }
@@ -275,3 +297,3 @@ void ConfigLineEdit::keyPressEvent(QKeyEvent* e)
                 sym_set_string_value(item->menu->sym, text().latin1());
-                emit lineChanged(item);
+                parent()->updateList(item);
                 break;
@@ -282,2 +304,3 @@ void ConfigLineEdit::keyPressEvent(QKeyEvent* e)
         e->accept();
+        parent()->list->setFocus();
         hide();
@@ -285,3 +308,3 @@ void ConfigLineEdit::keyPressEvent(QKeyEvent* e)
 
-ConfigList::ConfigList(QWidget* p, ConfigView* cv)
+ConfigList::ConfigList(ConfigView* p, ConfigMainWindow* cv)
         : Parent(p), cview(cv),
@@ -354,2 +377,3 @@ void ConfigList::updateList(ConfigItem* item)
         updateMenuList(this, rootEntry);
+        triggerUpdate();
 }
@@ -384,3 +408,3 @@ void ConfigList::setValue(ConfigItem* item, tristate val)
                         item->setOpen(TRUE);
-                emit symbolChanged(item);
+                parent()->updateList(item);
                 break;
@@ -416,3 +440,3 @@ void ConfigList::changeValue(ConfigItem* item)
                 if (oldexpr != newexpr)
-                        emit symbolChanged(item);
+                        parent()->updateList(item);
                 break;
@@ -426,3 +450,3 @@ void ConfigList::changeValue(ConfigItem* item)
 #endif
-                        lineEdit->show(item);
+                        parent()->lineEdit->show(item);
                 break;
@@ -518,3 +542,3 @@ void ConfigList::contentsMousePressEvent(QMouseEvent* e)
         //printf("contentsMousePressEvent: %d,%d\n", p.x(), p.y());
-        QListView::contentsMousePressEvent(e);
+        Parent::contentsMousePressEvent(e);
 }
@@ -565,3 +589,3 @@ skip:
         //printf("contentsMouseReleaseEvent: %d,%d\n", p.x(), p.y());
-        QListView::contentsMouseReleaseEvent(e);
+        Parent::contentsMouseReleaseEvent(e);
 }
@@ -572,3 +596,3 @@ void ConfigList::contentsMouseMoveEvent(QMouseEvent* e)
         //printf("contentsMouseMoveEvent: %d,%d\n", p.x(), p.y());
-        QListView::contentsMouseMoveEvent(e);
+        Parent::contentsMouseMoveEvent(e);
 }
@@ -589,2 +613,4 @@ void ConfigList::contentsMouseDoubleClickEvent(QMouseEvent* e)
                 emit menuSelected(menu);
+        else if (menu->sym)
+                changeValue(item);
 
@@ -592,3 +618,3 @@ skip:
         //printf("contentsMouseDoubleClickEvent: %d,%d\n", p.x(), p.y());
-        QListView::contentsMouseDoubleClickEvent(e);
+        Parent::contentsMouseDoubleClickEvent(e);
 }
@@ -607,2 +633,43 @@ void ConfigList::focusInEvent(QFocusEvent *e)
 
+ConfigView* ConfigView::viewList;
+
+ConfigView::ConfigView(QWidget* parent, ConfigMainWindow* cview)
+        : Parent(parent)
+{
+        list = new ConfigList(this, cview);
+        lineEdit = new ConfigLineEdit(this);
+        lineEdit->hide();
+
+        this->nextView = viewList;
+        viewList = this;
+}
+
+ConfigView::~ConfigView(void)
+{
+        ConfigView** vp;
+
+        for (vp = &viewList; *vp; vp = &(*vp)->nextView) {
+                if (*vp == this) {
+                        *vp = nextView;
+                        break;
+                }
+        }
+}
+
+void ConfigView::updateList(ConfigItem* item)
+{
+        ConfigView* v;
+
+        for (v = viewList; v; v = v->nextView)
+                v->list->updateList(item);
+}
+
+void ConfigView::updateListAll(void)
+{
+        ConfigView* v;
+
+        for (v = viewList; v; v = v->nextView)
+                v->list->updateListAll();
+}
+
 /*
@@ -610,4 +677,5 @@ void ConfigList::focusInEvent(QFocusEvent *e)
  */
-ConfigView::ConfigView(void)
+ConfigMainWindow::ConfigMainWindow(void)
 {
+        ConfigView* view;
         QMenuBar* menu;
@@ -615,2 +683,21 @@ ConfigView::ConfigView(void)
         QSplitter* split2;
+        bool ok;
+        int x, y, width, height;
+
+        QWidget *d = configApp->desktop();
+
+#if QT_VERSION >= 300
+        width = configSettings->readNumEntry("/kconfig/qconf/window width", d->width() - 64);
+        height = configSettings->readNumEntry("/kconfig/qconf/window height", d->height() - 64);
+        resize(width, height);
+        x = configSettings->readNumEntry("/kconfig/qconf/window x", 0, &ok);
+        if (ok)
+                y = configSettings->readNumEntry("/kconfig/qconf/window y", 0, &ok);
+        if (ok)
+                move(x, y);
+#else
+        width = d->width() - 64;
+        height = d->height() - 64;
+        resize(width, height);
+#endif
 
@@ -622,3 +709,4 @@ ConfigView::ConfigView(void)
 
-        menuList = new ConfigList(split1, this);
+        view = new ConfigView(split1, this);
+        menuList = view->list;
 
@@ -628,12 +716,4 @@ ConfigView::ConfigView(void)
         // create config tree
-        QVBox* box = new QVBox(split2);
-        configList = new ConfigList(box, this);
-        configList->lineEdit = new ConfigLineEdit(box);
-        configList->lineEdit->hide();
-        configList->connect(configList, SIGNAL(symbolChanged(ConfigItem*)),
-                            configList, SLOT(updateList(ConfigItem*)));
-        configList->connect(configList, SIGNAL(symbolChanged(ConfigItem*)),
-                            menuList, SLOT(updateList(ConfigItem*)));
-        configList->connect(configList->lineEdit, SIGNAL(lineChanged(ConfigItem*)),
-                            SLOT(updateList(ConfigItem*)));
+        view = new ConfigView(split2, this);
+        configList = view->list;
 
@@ -687,2 +767,7 @@ ConfigView::ConfigView(void)
 
+        QAction *showIntroAction = new QAction(NULL, "Introduction", 0, this);
+          connect(showIntroAction, SIGNAL(activated()), SLOT(showIntro()));
+        QAction *showAboutAction = new QAction(NULL, "About", 0, this);
+          connect(showAboutAction, SIGNAL(activated()), SLOT(showAbout()));
+
         // init tool bar
@@ -716,2 +801,9 @@ ConfigView::ConfigView(void)
 
+        // create help menu
+        QPopupMenu* helpMenu = new QPopupMenu(this);
+        menu->insertSeparator();
+        menu->insertItem("&Help", helpMenu);
+        showIntroAction->addTo(helpMenu);
+        showAboutAction->addTo(helpMenu);
+
         connect(configList, SIGNAL(menuSelected(struct menu *)),
@@ -771,3 +863,3 @@ static void expr_print_help(void *data, const char *str)
  */
-void ConfigView::setHelp(QListViewItem* item)
+void ConfigMainWindow::setHelp(QListViewItem* item)
 {
@@ -776,3 +868,3 @@ void ConfigView::setHelp(QListViewItem* item)
 
-        configList->lineEdit->hide();
+        configList->parent()->lineEdit->hide();
         if (item) {
@@ -859,3 +951,3 @@ void ConfigView::setHelp(QListViewItem* item)
 
-void ConfigView::loadConfig(void)
+void ConfigMainWindow::loadConfig(void)
 {
@@ -866,5 +958,6 @@ void ConfigView::loadConfig(void)
                 QMessageBox::information(this, "qconf", "Unable to load configuration!");
+        ConfigView::updateListAll();
 }
 
-void ConfigView::saveConfig(void)
+void ConfigMainWindow::saveConfig(void)
 {
@@ -874,3 +967,3 @@ void ConfigView::saveConfig(void)
 
-void ConfigView::saveConfigAs(void)
+void ConfigMainWindow::saveConfigAs(void)
 {
@@ -883,3 +976,3 @@ void ConfigView::saveConfigAs(void)
 
-void ConfigView::changeMenu(struct menu *menu)
+void ConfigMainWindow::changeMenu(struct menu *menu)
 {
@@ -889,3 +982,3 @@ void ConfigView::changeMenu(struct menu *menu)
 
-void ConfigView::listFocusChanged(void)
+void ConfigMainWindow::listFocusChanged(void)
 {
@@ -900,3 +993,3 @@ void ConfigView::listFocusChanged(void)
 
-void ConfigView::goBack(void)
+void ConfigMainWindow::goBack(void)
 {
@@ -917,3 +1010,3 @@ void ConfigView::goBack(void)
 
-void ConfigView::showSingleView(void)
+void ConfigMainWindow::showSingleView(void)
 {
@@ -930,3 +1023,3 @@ void ConfigView::showSingleView(void)
 
-void ConfigView::showSplitView(void)
+void ConfigMainWindow::showSplitView(void)
 {
@@ -946,3 +1039,3 @@ void ConfigView::showSplitView(void)
 
-void ConfigView::showFullView(void)
+void ConfigMainWindow::showFullView(void)
 {
@@ -959,3 +1052,3 @@ void ConfigView::showFullView(void)
 
-void ConfigView::setShowAll(bool b)
+void ConfigMainWindow::setShowAll(bool b)
 {
@@ -969,3 +1062,3 @@ void ConfigView::setShowAll(bool b)
 
-void ConfigView::setShowDebug(bool b)
+void ConfigMainWindow::setShowDebug(bool b)
 {
@@ -976,3 +1069,3 @@ void ConfigView::setShowDebug(bool b)
 
-void ConfigView::setShowName(bool b)
+void ConfigMainWindow::setShowName(bool b)
 {
@@ -984,3 +1077,3 @@ void ConfigView::setShowName(bool b)
 
-void ConfigView::setShowRange(bool b)
+void ConfigMainWindow::setShowRange(bool b)
 {
@@ -992,3 +1085,3 @@ void ConfigView::setShowRange(bool b)
 
-void ConfigView::setShowData(bool b)
+void ConfigMainWindow::setShowData(bool b)
 {
@@ -1004,3 +1097,3 @@ void ConfigView::setShowData(bool b)
  */
-void ConfigView::closeEvent(QCloseEvent* e)
+void ConfigMainWindow::closeEvent(QCloseEvent* e)
 {
@@ -1027,2 +1120,27 @@ void ConfigView::closeEvent(QCloseEvent* e)
 
+void ConfigMainWindow::showIntro(void)
+{
+        static char str[] = "Welcome to the qconf graphical kernel configuration tool for Linux.\n\n"
+                "For each option, a blank box indicates the feature is disabled, a check\n"
+                "indicates it is enabled, and a dot indicates that it is to be compiled\n"
+                "as a module.  Clicking on the box will cycle through the three states.\n\n"
+                "If you do not see an option (e.g., a device driver) that you believe\n"
+                "should be present, try turning on Show All Options under the Options menu.\n"
+                "Although there is no cross reference yet to help you figure out what other\n"
+                "options must be enabled to support the option you are interested in, you can\n"
+                "still view the help of a grayed-out option.\n\n"
+                "Toggling Show Debug Info under the Options menu will show the dependencies,\n"
+                "which you can then match by examining other options.\n\n";
+
+        QMessageBox::information(this, "qconf", str);
+}
+
+void ConfigMainWindow::showAbout(void)
+{
+        static char str[] = "qconf is Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>.\n\n"
+                "Bug reports and feature request can also be entered at http://bugzilla.kernel.org/\n";
+
+        QMessageBox::information(this, "qconf", str);
+}
+
 void fixup_rootmenu(struct menu *menu)
@@ -1040,3 +1158,3 @@ int main(int ac, char** av)
 {
-        ConfigView* v;
+        ConfigMainWindow* v;
         const char *name;
@@ -1048,2 +1166,5 @@ int main(int ac, char** av)
         configApp = new QApplication(ac, av);
+#if QT_VERSION >= 300
+        configSettings = new QSettings;
+#endif
         if (ac > 1 && av[1][0] == '-') {
@@ -1065,3 +1186,4 @@ int main(int ac, char** av)
         //zconfdump(stdout);
-        v = new ConfigView();
+
+        v = new ConfigMainWindow();
 
@@ -1071,2 +1193,10 @@ int main(int ac, char** av)
         configApp->exec();
+
+#if QT_VERSION >= 300
+        configSettings->writeEntry("/kconfig/qconf/window x", v->pos().x());
+        configSettings->writeEntry("/kconfig/qconf/window y", v->pos().y());
+        configSettings->writeEntry("/kconfig/qconf/window width", v->size().width());
+        configSettings->writeEntry("/kconfig/qconf/window height", v->size().height());
+        delete configSettings;
+#endif
         return 0;
diff --git a/scripts/kconfig/qconf.h b/scripts/kconfig/qconf.h
index f8f3669..6f096b4 100644
--- a/scripts/kconfig/qconf.h
+++ b/scripts/kconfig/qconf.h
@@ -7,5 +7,23 @@
 
-class ConfigLineEdit;
+class ConfigList;
 class ConfigItem;
-class ConfigView;
+class ConfigLineEdit;
+class ConfigMainWindow;
+
+class ConfigView : public QVBox {
+        Q_OBJECT
+        typedef class QVBox Parent;
+public:
+        ConfigView(QWidget* parent, ConfigMainWindow* cview);
+        ~ConfigView(void);
+        static void updateList(ConfigItem* item);
+        static void updateListAll(void);
+
+public:
+        ConfigList* list;
+        ConfigLineEdit* lineEdit;
+
+        static ConfigView* viewList;
+        ConfigView* nextView;
+};
 
@@ -22,8 +40,11 @@ class ConfigList : public QListView {
 public:
-        ConfigList(QWidget* p, ConfigView* cview);
+        ConfigList(ConfigView* p, ConfigMainWindow* cview);
         void reinit(void);
+        ConfigView* parent(void) const
+        {
+                return (ConfigView*)Parent::parent();
+        }
 
-        ConfigLineEdit* lineEdit;
 protected:
-        ConfigView* cview;
+        ConfigMainWindow* cview;
 
@@ -45,3 +66,2 @@ signals:
         void parentSelected(void);
-        void symbolChanged(ConfigItem* item);
         void gotFocus(void);
@@ -102,4 +122,4 @@ class ConfigItem : public QListViewItem {
 public:
-        ConfigItem(QListView *parent, ConfigItem *after, struct menu *m)
-        : Parent(parent, after), menu(m)
+        ConfigItem(QListView *parent, ConfigItem *after, struct menu *m, bool v)
+        : Parent(parent, after), menu(m), visible(v)
         {
@@ -107,4 +127,4 @@ public:
         }
-        ConfigItem(ConfigItem *parent, ConfigItem *after, struct menu *m)
-        : Parent(parent, after), menu(m)
+        ConfigItem(ConfigItem *parent, ConfigItem *after, struct menu *m, bool v)
+        : Parent(parent, after), menu(m), visible(v)
         {
@@ -118,2 +138,3 @@ public:
         void updateMenu(void);
+        bool updateNeeded(void);
         ConfigList* listView() const
@@ -148,5 +169,5 @@ public:
 
+        ConfigItem* nextItem;
         struct menu *menu;
         bool visible;
-        bool doInit;
 };
@@ -157,9 +178,11 @@ class ConfigLineEdit : public QLineEdit {
 public:
-        ConfigLineEdit(QWidget * parent)
-        : QLineEdit(parent)
+        ConfigLineEdit(ConfigView* parent)
+        : Parent(parent)
         { }
+        ConfigView* parent(void) const
+        {
+                return (ConfigView*)Parent::parent();
+        }
         void show(ConfigItem *i);
         void keyPressEvent(QKeyEvent *e);
-signals:
-        void lineChanged(ConfigItem *item);
 
@@ -169,6 +192,6 @@ public:
 
-class ConfigView : public QMainWindow {
+class ConfigMainWindow : public QMainWindow {
         Q_OBJECT
 public:
-        ConfigView(void);
+        ConfigMainWindow(void);
 public slots:
@@ -189,2 +212,4 @@ public slots:
         void setShowData(bool);
+        void showIntro(void);
+        void showAbout(void);
 
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index 59c88d2..845d8a3 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -151,3 +151,3 @@ void sym_calc_visibility(struct symbol *sym)
                 sym->visible = visible;
-                sym->flags |= SYMBOL_CHANGED;
+                sym_set_changed(sym);
         }
@@ -206,3 +206,4 @@ void sym_calc_value(struct symbol *sym)
                                 }
-                        }
+                        } else
+                                S_TRI(newval) = S_TRI(sym->def);
                 } else
@@ -278,3 +279,3 @@ out:
         if (memcmp(&oldval, &newval, sizeof(newval)))
-                sym->flags |= SYMBOL_CHANGED;
+                sym_set_changed(sym);
         sym->curr = newval;
@@ -284,4 +285,7 @@ out:
                 prop = sym_get_choice_prop(sym);
-                for (e = prop->dep; e; e = e->left.expr)
+                for (e = prop->dep; e; e = e->left.expr) {
                         e->right.sym->flags |= flags;
+                        if (flags & SYMBOL_CHANGED)
+                                sym_set_changed(e->right.sym);
+                }
         }
@@ -299,2 +303,13 @@ void sym_clear_all_valid(void)
 
+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)
@@ -305,3 +320,3 @@ void sym_set_all_changed(void)
         for_all_symbols(i, sym)
-                sym->flags |= SYMBOL_CHANGED;
+                sym_set_changed(sym);
 }
@@ -342,3 +357,3 @@ bool sym_set_tristate_value(struct symbol *sym, tristate val)
                 sym->flags &= ~SYMBOL_NEW;
-                sym->flags |= SYMBOL_CHANGED;
+                sym_set_changed(sym);
         }
@@ -462,3 +477,3 @@ bool sym_set_string_value(struct symbol *sym, const char *newval)
                 sym->flags &= ~SYMBOL_NEW;
-                sym->flags |= SYMBOL_CHANGED;
+                sym_set_changed(sym);
         }
@@ -527,3 +542,2 @@ struct symbol *sym_lookup(const char *name, int isconst)
 
-        //printf("lookup: %s -> ", name);
         if (name) {
@@ -543,6 +557,4 @@ struct symbol *sym_lookup(const char *name, int isconst)
                                 if ((isconst && symbol->flags & SYMBOL_CONST) ||
-                                    (!isconst && !(symbol->flags & SYMBOL_CONST))) {
-                                        //printf("h:%p\n", symbol);
+                                    (!isconst && !(symbol->flags & SYMBOL_CONST)))
                                         return symbol;
-                                }
                         }
@@ -566,3 +578,2 @@ struct symbol *sym_lookup(const char *name, int isconst)
 
-        //printf("n:%p\n", symbol);
         return symbol;
diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l
index 6d81e5e..1471630 100644
--- a/scripts/kconfig/zconf.l
+++ b/scripts/kconfig/zconf.l
@@ -1,2 +1,2 @@
-%option backup nostdinit noyywrap full ecs
+%option backup nostdinit noyywrap never-interactive full ecs
 %option 8bit backup nodefault perf-report perf-report
@@ -9,2 +9,3 @@
 
+#include <limits.h>
 #include <stdio.h>
@@ -16,3 +17,2 @@
 #include "lkc.h"
-#include "zconf.tab.h"
 
@@ -85,4 +85,2 @@ n	[A-Za-z0-9_]
         unput(yytext[0]);
-        //printf("new config: ");
-        //symbol_end(NULL);
         BEGIN(COMMAND);
@@ -145,3 +143,7 @@ n	[A-Za-z0-9_]
         }
+                \\\ncurrent_file->lineno++;
         .
+        <<EOF>> {
+                BEGIN(INITIAL);
+        }
 }
@@ -149,5 +151,18 @@ n	[A-Za-z0-9_]
 <STRING>{
-                [^'"\n\\]+{
+                [^'"\\\n]+/\n{
+                append_string(yytext, yyleng);
+                zconflval.string = text;
+                return T_STRING;
+        }
+                [^'"\\\n]+{
                 append_string(yytext, yyleng);
         }
+                \\.?/\n{
+                append_string(yytext + 1, yyleng - 1);
+                zconflval.string = text;
+                return T_STRING;
+        }
+                \\.?{
+                append_string(yytext + 1, yyleng - 1);
+        }
                 \'|\"{
@@ -156,3 +171,2 @@ n	[A-Za-z0-9_]
                         zconflval.string = text;
-                        //printf("s:%s\n", text);
                         return T_STRING;
@@ -161,12 +175,10 @@ n	[A-Za-z0-9_]
         }
-                \\[ \t]*\nappend_string(yytext+yyleng-1, 1); current_file->lineno++;
-                \\[ \t]*append_string(yytext+1, yyleng-1);
-                \\.     append_string(yytext+1, 1);
                 \n{
-                //printf(":%d: open string!\n", current_file->lineno+1);
-                exit(0);
+                printf("%s:%d:warning: multi-line strings not supported\n", zconf_curname(), zconf_lineno());
+                current_file->lineno++;
+                BEGIN(INITIAL);
+                return T_EOL;
         }
                 <<EOF>>{
-                //printf(":%d: open string!\n", current_file->lineno+1);
-                exit(0);
+                BEGIN(INITIAL);
         }
@@ -223,2 +235,3 @@ n	[A-Za-z0-9_]
         }
+        fclose(yyin);
         yyterminate();
@@ -240,5 +253,30 @@ static void zconf_endhelp(void)
 
+
+/* 
+ * Try to open specified file with following names:
+ * ./name
+ * $(srctree)/name
+ * The latter is used when srctree is separate from objtree
+ * when compiling the kernel.
+ * Return NULL if file is not found.
+ */
+FILE *zconf_fopen(const char *name)
+{
+        char *env, fullname[PATH_MAX+1];
+        FILE *f;
+
+        f = fopen(name, "r");
+        if (!f && name[0] != '/') {
+                env = getenv(SRCTREE);
+                if (env) {
+                        sprintf(fullname, "%s/%s", env, name);
+                        f = fopen(fullname, "r");
+                }
+        }
+        return f;
+}
+
 void zconf_initscan(const char *name)
 {
-        yyin = fopen(name, "r");
+        yyin = zconf_fopen(name);
         if (!yyin) {
@@ -247,3 +285,2 @@ void zconf_initscan(const char *name)
         }
-        //fprintf(stderr, "zconf_initscan: %s\n", name);
 
@@ -264,3 +301,3 @@ void zconf_nextfile(const char *name)
         current_buf->state = YY_CURRENT_BUFFER;
-        yyin = fopen(name, "r");
+        yyin = zconf_fopen(name);
         if (!yyin) {
@@ -273,4 +310,2 @@ void zconf_nextfile(const char *name)
 
-        //fprintf(stderr, "zconf_nextfile: %s\n", name);
-
         if (file->flags & FILE_BUSY) {
@@ -299,2 +334,3 @@ static struct buffer *zconf_endfile(void)
         if (parent) {
+                fclose(yyin);
                 yy_delete_buffer(YY_CURRENT_BUFFER);
diff --git a/scripts/kconfig/zconf.y b/scripts/kconfig/zconf.y
index c3f1bd0..996b10a 100644
--- a/scripts/kconfig/zconf.y
+++ b/scripts/kconfig/zconf.y
@@ -229,6 +229,5 @@ choice_option: T_OPTIONAL
 
-choice_option: T_DEFAULT symbol
+choice_option: T_DEFAULT symbol if_expr
 {
-        menu_add_prop(P_DEFAULT, NULL, $2, NULL);
-        //current_choice->prop->def = $2;
+        menu_add_prop(P_DEFAULT, NULL, $2, $3);
         printd(DEBUG_PARSE, "%s:%d:default\n", zconf_curname(), zconf_lineno());
@@ -247,3 +246,2 @@ if: T_IF expr
         menu_add_entry(NULL);
-        //current_entry->prompt = menu_add_prop(T_IF, NULL, NULL, $2);
         menu_add_dep($2);