17 files changed, 189 insertions, 124 deletions

diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 1d0665e83bf9..7c98f60e2266 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -400,3 +400,6 @@ endif
 endef
 #
 ###############################################################################
+
+# delete partially updated (i.e. corrupted) files on error
+.DELETE_ON_ERROR:
diff --git a/scripts/Makefile.modbuiltin b/scripts/Makefile.modbuiltin
index 40867a41615b..a072a4267746 100644
--- a/scripts/Makefile.modbuiltin
+++ b/scripts/Makefile.modbuiltin
@@ -8,10 +8,10 @@ src := $(obj)
 PHONY := __modbuiltin
 __modbuiltin:
 
--include include/config/auto.conf
+include include/config/auto.conf
 # tristate.conf sets tristate variables to uppercase 'Y' or 'M'
 # That way, we get the list of built-in modules in obj-Y
--include include/config/tristate.conf
+include include/config/tristate.conf
 
 include scripts/Kbuild.include
 
diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index f3c0e6261e2a..8d8791069abf 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -3,8 +3,7 @@
 # Kernel configuration targets
 # These targets are used from top-level makefile
 
-PHONY += xconfig gconfig menuconfig config syncconfig \
-        localmodconfig localyesconfig
+PHONY += xconfig gconfig menuconfig config localmodconfig localyesconfig
 
 ifdef KBUILD_KCONFIG
 Kconfig := $(KBUILD_KCONFIG)
@@ -34,14 +33,7 @@ config: $(obj)/conf
 nconfig: $(obj)/nconf
         $< $(silent) $(Kconfig)
 
-# This has become an internal implementation detail and is now deprecated
-# for external use.
-syncconfig: $(obj)/conf
-        $(Q)mkdir -p include/config include/generated
-        $< $(silent) --$@ $(Kconfig)
-
 localyesconfig localmodconfig: $(obj)/conf
-        $(Q)mkdir -p include/config include/generated
         $(Q)perl $(srctree)/$(src)/streamline_config.pl --$@ $(srctree) $(Kconfig) > .tmp.config
         $(Q)if [ -f .config ]; then                                     \
                         cmp -s .tmp.config .config ||                   \
@@ -56,8 +48,12 @@ localyesconfig localmodconfig: $(obj)/conf
         $(Q)rm -f .tmp.config
 
 # These targets map 1:1 to the commandline options of 'conf'
+#
+# Note:
+#  syncconfig has become an internal implementation detail and is now
+#  deprecated for external use
 simple-targets := oldconfig allnoconfig allyesconfig allmodconfig \
-        alldefconfig randconfig listnewconfig olddefconfig
+        alldefconfig randconfig listnewconfig olddefconfig syncconfig
 PHONY += $(simple-targets)
 
 $(simple-targets): $(obj)/conf
@@ -215,6 +211,7 @@ $(obj)/zconf.tab.o: $(obj)/zconf.lex.c
 
 # check if necessary packages are available, and configure build flags
 define filechk_conf_cfg
+        $(CONFIG_SHELL) $(srctree)/scripts/kconfig/check-pkgconfig.sh; \
         $(CONFIG_SHELL) $<
 endef
 
diff --git a/scripts/kconfig/check-pkgconfig.sh b/scripts/kconfig/check-pkgconfig.sh
new file mode 100644
index 000000000000..7a1c40bfb58c
--- /dev/null
+++ b/scripts/kconfig/check-pkgconfig.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# Check for pkg-config presence
+
+if [ -z $(command -v pkg-config) ]; then
+        echo "'make *config' requires 'pkg-config'. Please install it." 1>&2
+        exit 1
+fi
diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index 671ff5364497..b35cc9303979 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -496,6 +496,7 @@ int main(int ac, char **av)
         int opt;
         const char *name, *defconfig_file = NULL /* gcc uninit */;
         struct stat tmpstat;
+        int no_conf_write = 0;
 
         tty_stdio = isatty(0) && isatty(1);
 
@@ -633,13 +634,14 @@ int main(int ac, char **av)
         }
 
         if (sync_kconfig) {
-                if (conf_get_changed()) {
-                        name = getenv("KCONFIG_NOSILENTUPDATE");
-                        if (name && *name) {
+                name = getenv("KCONFIG_NOSILENTUPDATE");
+                if (name && *name) {
+                        if (conf_get_changed()) {
                                 fprintf(stderr,
                                         "\n*** The configuration requires explicit update.\n\n");
                                 return 1;
                         }
+                        no_conf_write = 1;
                 }
         }
 
@@ -684,29 +686,32 @@ int main(int ac, char **av)
                 break;
         }
 
-        if (sync_kconfig) {
-                /* syncconfig is used during the build so we shall update autoconf.
-                 * All other commands are only used to generate a config.
-                 */
-                if (conf_get_changed() && conf_write(NULL)) {
-                        fprintf(stderr, "\n*** Error during writing of the configuration.\n\n");
-                        exit(1);
-                }
-                if (conf_write_autoconf()) {
-                        fprintf(stderr, "\n*** Error during update of the configuration.\n\n");
-                        return 1;
-                }
-        } else if (input_mode == savedefconfig) {
+        if (input_mode == savedefconfig) {
                 if (conf_write_defconfig(defconfig_file)) {
                         fprintf(stderr, "n*** Error while saving defconfig to: %s\n\n",
                                 defconfig_file);
                         return 1;
                 }
         } else if (input_mode != listnewconfig) {
-                if (conf_write(NULL)) {
+                if (!no_conf_write && conf_write(NULL)) {
                         fprintf(stderr, "\n*** Error during writing of the configuration.\n\n");
                         exit(1);
                 }
+
+                /*
+                 * Create auto.conf if it does not exist.
+                 * This prevents GNU Make 4.1 or older from emitting
+                 * "include/config/auto.conf: No such file or directory"
+                 * in the top-level Makefile
+                 *
+                 * syncconfig always creates or updates auto.conf because it is
+                 * used during the build.
+                 */
+                if (conf_write_autoconf(sync_kconfig) && sync_kconfig) {
+                        fprintf(stderr,
+                                "\n*** Error during sync of the configuration.\n\n");
+                        return 1;
+                }
         }
         return 0;
 }
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 39e20974f4a3..91d0a5c014ac 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -16,6 +16,64 @@
 
 #include "lkc.h"
 
+/* return true if 'path' exists, false otherwise */
+static bool is_present(const char *path)
+{
+        struct stat st;
+
+        return !stat(path, &st);
+}
+
+/* return true if 'path' exists and it is a directory, false otherwise */
+static bool is_dir(const char *path)
+{
+        struct stat st;
+
+        if (stat(path, &st))
+                return 0;
+
+        return S_ISDIR(st.st_mode);
+}
+
+/*
+ * Create the parent directory of the given path.
+ *
+ * For example, if 'include/config/auto.conf' is given, create 'include/config'.
+ */
+static int make_parent_dir(const char *path)
+{
+        char tmp[PATH_MAX + 1];
+        char *p;
+
+        strncpy(tmp, path, sizeof(tmp));
+        tmp[sizeof(tmp) - 1] = 0;
+
+        /* Remove the base name. Just return if nothing is left */
+        p = strrchr(tmp, '/');
+        if (!p)
+                return 0;
+        *(p + 1) = 0;
+
+        /* Just in case it is an absolute path */
+        p = tmp;
+        while (*p == '/')
+                p++;
+
+        while ((p = strchr(p, '/'))) {
+                *p = 0;
+
+                /* skip if the directory exists */
+                if (!is_dir(tmp) && mkdir(tmp, 0755))
+                        return -1;
+
+                *p = '/';
+                while (*p == '/')
+                        p++;
+        }
+
+        return 0;
+}
+
 struct conf_printer {
         void (*print_symbol)(FILE *, struct symbol *, const char *, void *);
         void (*print_comment)(FILE *, const char *, void *);
@@ -43,16 +101,16 @@ static void conf_warning(const char *fmt, ...)
         conf_warnings++;
 }
 
-static void conf_default_message_callback(const char *fmt, va_list ap)
+static void conf_default_message_callback(const char *s)
 {
         printf("#\n# ");
-        vprintf(fmt, ap);
+        printf("%s", s);
         printf("\n#\n");
 }
 
-static void (*conf_message_callback) (const char *fmt, va_list ap) =
+static void (*conf_message_callback)(const char *s) =
         conf_default_message_callback;
-void conf_set_message_callback(void (*fn) (const char *fmt, va_list ap))
+void conf_set_message_callback(void (*fn)(const char *s))
 {
         conf_message_callback = fn;
 }
@@ -60,10 +118,15 @@ void conf_set_message_callback(void (*fn) (const char *fmt, va_list ap))
 static void conf_message(const char *fmt, ...)
 {
         va_list ap;
+        char buf[4096];
+
+        if (!conf_message_callback)
+                return;
 
         va_start(ap, fmt);
-        if (conf_message_callback)
-                conf_message_callback(fmt, ap);
+
+        vsnprintf(buf, sizeof(buf), fmt, ap);
+        conf_message_callback(buf);
         va_end(ap);
 }
 
@@ -83,7 +146,6 @@ const char *conf_get_autoconfig_name(void)
 
 char *conf_get_default_confname(void)
 {
-        struct stat buf;
         static char fullname[PATH_MAX+1];
         char *env, *name;
 
@@ -91,7 +153,7 @@ char *conf_get_default_confname(void)
         env = getenv(SRCTREE);
         if (env) {
                 sprintf(fullname, "%s/%s", env, name);
-                if (!stat(fullname, &buf))
+                if (is_present(fullname))
                         return fullname;
         }
         return name;
@@ -397,7 +459,7 @@ int conf_read(const char *name)
 
         for_all_symbols(i, sym) {
                 sym_calc_value(sym);
-                if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
+                if (sym_is_choice(sym) || (sym->flags & SYMBOL_NO_WRITE))
                         continue;
                 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
                         /* check that calculated value agrees with saved value */
@@ -725,10 +787,9 @@ int conf_write(const char *name)
 
         dirname[0] = 0;
         if (name && name[0]) {
-                struct stat st;
                 char *slash;
 
-                if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
+                if (is_dir(name)) {
                         strcpy(dirname, name);
                         strcat(dirname, "/");
                         basename = conf_get_configname();
@@ -813,26 +874,59 @@ next:
         return 0;
 }
 
+/* write a dependency file as used by kbuild to track dependencies */
+static int conf_write_dep(const char *name)
+{
+        struct file *file;
+        FILE *out;
+
+        if (!name)
+                name = ".kconfig.d";
+        out = fopen("..config.tmp", "w");
+        if (!out)
+                return 1;
+        fprintf(out, "deps_config := \\\n");
+        for (file = file_list; file; file = file->next) {
+                if (file->next)
+                        fprintf(out, "\t%s \\\n", file->name);
+                else
+                        fprintf(out, "\t%s\n", file->name);
+        }
+        fprintf(out, "\n%s: \\\n"
+                     "\t$(deps_config)\n\n", conf_get_autoconfig_name());
+
+        env_write_dep(out, conf_get_autoconfig_name());
+
+        fprintf(out, "\n$(deps_config): ;\n");
+        fclose(out);
+
+        if (make_parent_dir(name))
+                return 1;
+        rename("..config.tmp", name);
+        return 0;
+}
+
 static int conf_split_config(void)
 {
         const char *name;
         char path[PATH_MAX+1];
         char *s, *d, c;
         struct symbol *sym;
-        struct stat sb;
         int res, i, fd;
 
         name = conf_get_autoconfig_name();
         conf_read_simple(name, S_DEF_AUTO);
         sym_calc_value(modules_sym);
 
+        if (make_parent_dir("include/config/foo.h"))
+                return 1;
         if (chdir("include/config"))
                 return 1;
 
         res = 0;
         for_all_symbols(i, sym) {
                 sym_calc_value(sym);
-                if ((sym->flags & SYMBOL_AUTO) || !sym->name)
+                if ((sym->flags & SYMBOL_NO_WRITE) || !sym->name)
                         continue;
                 if (sym->flags & SYMBOL_WRITE) {
                         if (sym->flags & SYMBOL_DEF_AUTO) {
@@ -897,19 +991,12 @@ static int conf_split_config(void)
                                 res = 1;
                                 break;
                         }
-                        /*
-                         * Create directory components,
-                         * unless they exist already.
-                         */
-                        d = path;
-                        while ((d = strchr(d, '/'))) {
-                                *d = 0;
-                                if (stat(path, &sb) && mkdir(path, 0755)) {
-                                        res = 1;
-                                        goto out;
-                                }
-                                *d++ = '/';
+
+                        if (make_parent_dir(path)) {
+                                res = 1;
+                                goto out;
                         }
+
                         /* Try it again. */
                         fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
                         if (fd == -1) {
@@ -926,16 +1013,20 @@ out:
         return res;
 }
 
-int conf_write_autoconf(void)
+int conf_write_autoconf(int overwrite)
 {
         struct symbol *sym;
         const char *name;
+        const char *autoconf_name = conf_get_autoconfig_name();
         FILE *out, *tristate, *out_h;
         int i;
 
+        if (!overwrite && is_present(autoconf_name))
+                return 0;
+
         sym_clear_all_valid();
 
-        file_write_dep("include/config/auto.conf.cmd");
+        conf_write_dep("include/config/auto.conf.cmd");
 
         if (conf_split_config())
                 return 1;
@@ -982,19 +1073,26 @@ int conf_write_autoconf(void)
         name = getenv("KCONFIG_AUTOHEADER");
         if (!name)
                 name = "include/generated/autoconf.h";
+        if (make_parent_dir(name))
+                return 1;
         if (rename(".tmpconfig.h", name))
                 return 1;
+
         name = getenv("KCONFIG_TRISTATE");
         if (!name)
                 name = "include/config/tristate.conf";
+        if (make_parent_dir(name))
+                return 1;
         if (rename(".tmpconfig_tristate", name))
                 return 1;
-        name = conf_get_autoconfig_name();
+
+        if (make_parent_dir(autoconf_name))
+                return 1;
         /*
          * This must be the last step, kbuild has a dependency on auto.conf
          * and this marks the successful completion of the previous steps.
          */
-        if (rename(".tmpconfig", name))
+        if (rename(".tmpconfig", autoconf_name))
                 return 1;
 
         return 0;
diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
index f63b41b0dd49..7c329e179007 100644
--- a/scripts/kconfig/expr.h
+++ b/scripts/kconfig/expr.h
@@ -141,7 +141,7 @@ struct symbol {
 #define SYMBOL_OPTIONAL   0x0100  /* choice is optional - values can be 'n' */
 #define SYMBOL_WRITE      0x0200  /* write symbol to file (KCONFIG_CONFIG) */
 #define SYMBOL_CHANGED    0x0400  /* ? */
-#define SYMBOL_AUTO       0x1000  /* value from environment variable */
+#define SYMBOL_NO_WRITE   0x1000  /* Symbol for internal use only; it will not be written */
 #define SYMBOL_CHECKED    0x2000  /* used during dependency checking */
 #define SYMBOL_WARNED     0x8000  /* warning has been issued */
 
@@ -185,7 +185,6 @@ enum prop_type {
         P_SELECT,   /* select BAR */
         P_IMPLY,    /* imply BAR */
         P_RANGE,    /* range 7..100 (for a symbol) */
-        P_ENV,      /* value from environment variable */
         P_SYMBOL,   /* where a symbol is defined */
 };
 
diff --git a/scripts/kconfig/gconf.c b/scripts/kconfig/gconf.c
index 610c4ab54d76..36f578415c4a 100644
--- a/scripts/kconfig/gconf.c
+++ b/scripts/kconfig/gconf.c
@@ -101,8 +101,8 @@ const char *dbg_sym_flags(int val)
                 strcat(buf, "write/");
         if (val & SYMBOL_CHANGED)
                 strcat(buf, "changed/");
-        if (val & SYMBOL_AUTO)
-                strcat(buf, "auto/");
+        if (val & SYMBOL_NO_WRITE)
+                strcat(buf, "no_write/");
 
         buf[strlen(buf) - 1] = '\0';
 
@@ -525,6 +525,7 @@ void on_save_activate(GtkMenuItem * menuitem, gpointer user_data)
 {
         if (conf_write(NULL))
                 text_insert_msg("Error", "Unable to save configuration !");
+        conf_write_autoconf(0);
 }
 
 
diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h
index ed3ff88e60ba..9eb7c837cd8f 100644
--- a/scripts/kconfig/lkc.h
+++ b/scripts/kconfig/lkc.h
@@ -97,7 +97,6 @@ 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);
 void *xrealloc(void *p, size_t size);
@@ -126,7 +125,6 @@ const char *sym_get_string_default(struct symbol *sym);
 struct symbol *sym_check_deps(struct symbol *sym);
 struct property *prop_alloc(enum prop_type type, struct symbol *sym);
 struct symbol *prop_get_symbol(struct property *prop);
-struct property *sym_get_env_prop(struct symbol *sym);
 
 static inline tristate sym_get_tristate_value(struct symbol *sym)
 {
diff --git a/scripts/kconfig/lkc_proto.h b/scripts/kconfig/lkc_proto.h
index a8b7a330587e..86c267540ccc 100644
--- a/scripts/kconfig/lkc_proto.h
+++ b/scripts/kconfig/lkc_proto.h
@@ -7,10 +7,10 @@ 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);
+int conf_write_autoconf(int overwrite);
 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));
+void conf_set_message_callback(void (*fn)(const char *s));
 
 /* menu.c */
 extern struct menu rootmenu;
diff --git a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c
index 5294ed159b98..83b5836615fb 100644
--- a/scripts/kconfig/mconf.c
+++ b/scripts/kconfig/mconf.c
@@ -772,16 +772,13 @@ 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)
+static void conf_message_callback(const char *s)
 {
-        char buf[PATH_MAX+1];
-
-        vsnprintf(buf, sizeof(buf), fmt, ap);
         if (save_and_exit) {
                 if (!silent)
-                        printf("%s", buf);
+                        printf("%s", s);
         } else {
-                show_textbox(NULL, buf, 6, 60);
+                show_textbox(NULL, s, 6, 60);
         }
 }
 
@@ -977,6 +974,7 @@ static int handle_exit(void)
                                           "\n\n");
                         return 1;
                 }
+                conf_write_autoconf(0);
                 /* fall through */
         case -1:
                 if (!silent)
diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c
index 379a119dcd1e..4cf15d449c05 100644
--- a/scripts/kconfig/menu.c
+++ b/scripts/kconfig/menu.c
@@ -212,7 +212,7 @@ void menu_add_option(int token, char *arg)
                         sym_defconfig_list = current_entry->sym;
                 else if (sym_defconfig_list != current_entry->sym)
                         zconf_error("trying to redefine defconfig symbol");
-                sym_defconfig_list->flags |= SYMBOL_AUTO;
+                sym_defconfig_list->flags |= SYMBOL_NO_WRITE;
                 break;
         case T_OPT_ALLNOCONFIG_Y:
                 current_entry->sym->flags |= SYMBOL_ALLNOCONFIG_Y;
diff --git a/scripts/kconfig/nconf.c b/scripts/kconfig/nconf.c
index 97b78445584b..1ef232ae5ab9 100644
--- a/scripts/kconfig/nconf.c
+++ b/scripts/kconfig/nconf.c
@@ -674,6 +674,7 @@ static int do_exit(void)
                                   "Your configuration changes were NOT saved.",
                                   1,
                                   "<OK>");
+                conf_write_autoconf(0);
                 break;
         default:
                 btn_dialog(
@@ -1210,12 +1211,9 @@ static void conf(struct menu *menu)
         }
 }
 
-static void conf_message_callback(const char *fmt, va_list ap)
+static void conf_message_callback(const char *s)
 {
-        char buf[1024];
-
-        vsnprintf(buf, sizeof(buf), fmt, ap);
-        btn_dialog(main_window, buf, 1, "<OK>");
+        btn_dialog(main_window, s, 1, "<OK>");
 }
 
 static void show_help(struct menu *menu)
diff --git a/scripts/kconfig/qconf.cc b/scripts/kconfig/qconf.cc
index ad9c22dd04f5..ef4310f2558b 100644
--- a/scripts/kconfig/qconf.cc
+++ b/scripts/kconfig/qconf.cc
@@ -1149,7 +1149,6 @@ QString ConfigInfoView::debug_info(struct symbol *sym)
                 case P_DEFAULT:
                 case P_SELECT:
                 case P_RANGE:
-                case P_ENV:
                         debug += prop_get_type_name(prop->type);
                         debug += ": ";
                         expr_print(prop->expr, expr_print_help, &debug, E_NONE);
@@ -1535,6 +1534,8 @@ bool ConfigMainWindow::saveConfig(void)
                 QMessageBox::information(this, "qconf", "Unable to save configuration!");
                 return false;
         }
+        conf_write_autoconf(0);
+
         return true;
 }
 
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index 7c9a88e91cfa..4ec8b1f0d42c 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -76,15 +76,6 @@ struct property *sym_get_choice_prop(struct symbol *sym)
         return NULL;
 }
 
-struct property *sym_get_env_prop(struct symbol *sym)
-{
-        struct property *prop;
-
-        for_all_properties(sym, prop, P_ENV)
-                return prop;
-        return NULL;
-}
-
 static struct property *sym_get_default_prop(struct symbol *sym)
 {
         struct property *prop;
@@ -463,7 +454,7 @@ void sym_calc_value(struct symbol *sym)
                 }
         }
 
-        if (sym->flags & SYMBOL_AUTO)
+        if (sym->flags & SYMBOL_NO_WRITE)
                 sym->flags &= ~SYMBOL_WRITE;
 
         if (sym->flags & SYMBOL_NEED_SET_CHOICE_VALUES)
@@ -1298,8 +1289,6 @@ const char *prop_get_type_name(enum prop_type type)
         switch (type) {
         case P_PROMPT:
                 return "prompt";
-        case P_ENV:
-                return "env";
         case P_COMMENT:
                 return "comment";
         case P_MENU:
diff --git a/scripts/kconfig/util.c b/scripts/kconfig/util.c
index a365594770d9..d999683bb2a7 100644
--- a/scripts/kconfig/util.c
+++ b/scripts/kconfig/util.c
@@ -29,36 +29,6 @@ struct file *file_lookup(const char *name)
         return file;
 }
 
-/* write a dependency file as used by kbuild to track dependencies */
-int file_write_dep(const char *name)
-{
-        struct file *file;
-        FILE *out;
-
-        if (!name)
-                name = ".kconfig.d";
-        out = fopen("..config.tmp", "w");
-        if (!out)
-                return 1;
-        fprintf(out, "deps_config := \\\n");
-        for (file = file_list; file; file = file->next) {
-                if (file->next)
-                        fprintf(out, "\t%s \\\n", file->name);
-                else
-                        fprintf(out, "\t%s\n", file->name);
-        }
-        fprintf(out, "\n%s: \\\n"
-                     "\t$(deps_config)\n\n", conf_get_autoconfig_name());
-
-        env_write_dep(out, conf_get_autoconfig_name());
-
-        fprintf(out, "\n$(deps_config): ;\n");
-        fclose(out);
-        rename("..config.tmp", name);
-        return 0;
-}
-
-
 /* Allocate initial growable string */
 struct gstr str_new(void)
 {
diff --git a/scripts/kconfig/zconf.y b/scripts/kconfig/zconf.y
index 4b68272ebdb9..22fceb264cf5 100644
--- a/scripts/kconfig/zconf.y
+++ b/scripts/kconfig/zconf.y
@@ -31,7 +31,7 @@ struct symbol *symbol_hash[SYMBOL_HASHSIZE];
 static struct menu *current_menu, *current_entry;
 
 %}
-%expect 31
+%expect 30
 
 %union
 {
@@ -117,7 +117,7 @@ start: mainmenu_stmt stmt_list | stmt_list;
 
 /* mainmenu entry */
 
-mainmenu_stmt: T_MAINMENU prompt nl
+mainmenu_stmt: T_MAINMENU prompt T_EOL
 {
         menu_add_prompt(P_MENU, $2, NULL);
 };
@@ -265,7 +265,7 @@ symbol_option_arg:
 choice: T_CHOICE word_opt T_EOL
 {
         struct symbol *sym = sym_lookup($2, SYMBOL_CHOICE);
-        sym->flags |= SYMBOL_AUTO;
+        sym->flags |= SYMBOL_NO_WRITE;
         menu_add_entry(sym);
         menu_add_expr(P_CHOICE, NULL, NULL);
         free($2);