support: move kconfig stuff from package/config to support/kconfig

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

1 files changed, 0 insertions, 1260 deletions

diff --git a/package/config/symbol.c b/package/config/symbol.c
deleted file mode 100644
index a796c95fe..000000000
--- a/package/config/symbol.c
+++ /dev/null
@@ -1,1260 +0,0 @@
-/*
- * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
- * Released under the terms of the GNU GPL v2.0.
- */
-
-#include <ctype.h>
-#include <stdlib.h>
-#include <string.h>
-#include <regex.h>
-#include <sys/utsname.h>
-
-#define LKC_DIRECT_LINK
-#include "lkc.h"
-
-struct symbol symbol_yes = {
-	.name = "y",
-	.curr = { "y", yes },
-	.flags = SYMBOL_CONST|SYMBOL_VALID,
-}, symbol_mod = {
-	.name = "m",
-	.curr = { "m", mod },
-	.flags = SYMBOL_CONST|SYMBOL_VALID,
-}, symbol_no = {
-	.name = "n",
-	.curr = { "n", no },
-	.flags = SYMBOL_CONST|SYMBOL_VALID,
-}, symbol_empty = {
-	.name = "",
-	.curr = { "", no },
-	.flags = SYMBOL_VALID,
-};
-
-struct symbol *sym_defconfig_list;
-struct symbol *modules_sym;
-tristate modules_val;
-
-struct expr *sym_env_list;
-
-static void sym_add_default(struct symbol *sym, const char *def)
-{
-	struct property *prop = prop_alloc(P_DEFAULT, sym);
-
-	prop->expr = expr_alloc_symbol(sym_lookup(def, SYMBOL_CONST));
-}
-
-void sym_init(void)
-{
-	struct symbol *sym;
-	struct utsname uts;
-	static bool inited = false;
-
-	if (inited)
-		return;
-	inited = true;
-
-	uname(&uts);
-
-	sym = sym_lookup("UNAME_RELEASE", 0);
-	sym->type = S_STRING;
-	sym->flags |= SYMBOL_AUTO;
-	sym_add_default(sym, uts.release);
-}
-
-enum symbol_type sym_get_type(struct symbol *sym)
-{
-	enum symbol_type type = sym->type;
-
-	if (type == S_TRISTATE) {
-		if (sym_is_choice_value(sym) && sym->visible == yes)
-			type = S_BOOLEAN;
-		else if (modules_val == no)
-			type = S_BOOLEAN;
-	}
-	return type;
-}
-
-const char *sym_type_name(enum symbol_type type)
-{
-	switch (type) {
-	case S_BOOLEAN:
-		return "boolean";
-	case S_TRISTATE:
-		return "tristate";
-	case S_INT:
-		return "integer";
-	case S_HEX:
-		return "hex";
-	case S_STRING:
-		return "string";
-	case S_UNKNOWN:
-		return "unknown";
-	case S_OTHER:
-		break;
-	}
-	return "???";
-}
-
-struct property *sym_get_choice_prop(struct symbol *sym)
-{
-	struct property *prop;
-
-	for_all_choices(sym, prop)
-		return prop;
-	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;
-}
-
-struct property *sym_get_default_prop(struct symbol *sym)
-{
-	struct property *prop;
-
-	for_all_defaults(sym, prop) {
-		prop->visible.tri = expr_calc_value(prop->visible.expr);
-		if (prop->visible.tri != no)
-			return prop;
-	}
-	return NULL;
-}
-
-static struct property *sym_get_range_prop(struct symbol *sym)
-{
-	struct property *prop;
-
-	for_all_properties(sym, prop, P_RANGE) {
-		prop->visible.tri = expr_calc_value(prop->visible.expr);
-		if (prop->visible.tri != no)
-			return prop;
-	}
-	return NULL;
-}
-
-static int sym_get_range_val(struct symbol *sym, int base)
-{
-	sym_calc_value(sym);
-	switch (sym->type) {
-	case S_INT:
-		base = 10;
-		break;
-	case S_HEX:
-		base = 16;
-		break;
-	default:
-		break;
-	}
-	return strtol(sym->curr.val, NULL, base);
-}
-
-static void sym_validate_range(struct symbol *sym)
-{
-	struct property *prop;
-	int base, val, val2;
-	char str[64];
-
-	switch (sym->type) {
-	case S_INT:
-		base = 10;
-		break;
-	case S_HEX:
-		base = 16;
-		break;
-	default:
-		return;
-	}
-	prop = sym_get_range_prop(sym);
-	if (!prop)
-		return;
-	val = strtol(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);
-		if (val <= val2)
-			return;
-	}
-	if (sym->type == S_INT)
-		sprintf(str, "%d", val2);
-	else
-		sprintf(str, "0x%x", val2);
-	sym->curr.val = strdup(str);
-}
-
-static void sym_calc_visibility(struct symbol *sym)
-{
-	struct property *prop;
-	tristate tri;
-
-	/* any prompt visible? */
-	tri = no;
-	for_all_prompts(sym, prop) {
-		prop->visible.tri = expr_calc_value(prop->visible.expr);
-		tri = EXPR_OR(tri, prop->visible.tri);
-	}
-	if (tri == mod && (sym->type != S_TRISTATE || modules_val == no))
-		tri = yes;
-	if (sym->visible != tri) {
-		sym->visible = tri;
-		sym_set_changed(sym);
-	}
-	if (sym_is_choice_value(sym))
-		return;
-	/* defaulting to "yes" if no explicit "depends on" are given */
-	tri = yes;
-	if (sym->dir_dep.expr)
-		tri = expr_calc_value(sym->dir_dep.expr);
-	if (tri == mod)
-		tri = yes;
-	if (sym->dir_dep.tri != tri) {
-		sym->dir_dep.tri = tri;
-		sym_set_changed(sym);
-	}
-	tri = no;
-	if (sym->rev_dep.expr)
-		tri = expr_calc_value(sym->rev_dep.expr);
-	if (tri == mod && sym_get_type(sym) == S_BOOLEAN)
-		tri = yes;
-	if (sym->rev_dep.tri != tri) {
-		sym->rev_dep.tri = tri;
-		sym_set_changed(sym);
-	}
-}
-
-/*
- * Find the default symbol for a choice.
- * First try the default values for the choice symbol
- * Next locate the first visible choice value
- * Return NULL if none was found
- */
-struct symbol *sym_choice_default(struct symbol *sym)
-{
-	struct symbol *def_sym;
-	struct property *prop;
-	struct expr *e;
-
-	/* any of the defaults visible? */
-	for_all_defaults(sym, prop) {
-		prop->visible.tri = expr_calc_value(prop->visible.expr);
-		if (prop->visible.tri == no)
-			continue;
-		def_sym = prop_get_symbol(prop);
-		if (def_sym->visible != no)
-			return def_sym;
-	}
-
-	/* just get the first visible value */
-	prop = sym_get_choice_prop(sym);
-	expr_list_for_each_sym(prop->expr, e, def_sym)
-		if (def_sym->visible != no)
-			return def_sym;
-
-	/* failed to locate any defaults */
-	return NULL;
-}
-
-static struct symbol *sym_calc_choice(struct symbol *sym)
-{
-	struct symbol *def_sym;
-	struct property *prop;
-	struct expr *e;
-
-	/* first calculate all choice values' visibilities */
-	prop = sym_get_choice_prop(sym);
-	expr_list_for_each_sym(prop->expr, e, def_sym)
-		sym_calc_visibility(def_sym);
-
-	/* is the user choice visible? */
-	def_sym = sym->def[S_DEF_USER].val;
-	if (def_sym && def_sym->visible != no)
-		return def_sym;
-
-	def_sym = sym_choice_default(sym);
-
-	if (def_sym == NULL)
-		/* no choice? reset tristate value */
-		sym->curr.tri = no;
-
-	return def_sym;
-}
-
-void sym_calc_value(struct symbol *sym)
-{
-	struct symbol_value newval, oldval;
-	struct property *prop;
-	struct expr *e;
-
-	if (!sym)
-		return;
-
-	if (sym->flags & SYMBOL_VALID)
-		return;
-	sym->flags |= SYMBOL_VALID;
-
-	oldval = sym->curr;
-
-	switch (sym->type) {
-	case S_INT:
-	case S_HEX:
-	case S_STRING:
-		newval = symbol_empty.curr;
-		break;
-	case S_BOOLEAN:
-	case S_TRISTATE:
-		newval = symbol_no.curr;
-		break;
-	default:
-		sym->curr.val = sym->name;
-		sym->curr.tri = no;
-		return;
-	}
-	if (!sym_is_choice_value(sym))
-		sym->flags &= ~SYMBOL_WRITE;
-
-	sym_calc_visibility(sym);
-
-	/* set default if recursively called */
-	sym->curr = newval;
-
-	switch (sym_get_type(sym)) {
-	case S_BOOLEAN:
-	case S_TRISTATE:
-		if (sym_is_choice_value(sym) && sym->visible == yes) {
-			prop = sym_get_choice_prop(sym);
-			newval.tri = (prop_get_symbol(prop)->curr.val == sym) ? yes : no;
-		} else {
-			if (sym->visible != no) {
-				/* if the symbol is visible use the user value
-				 * if available, otherwise try the default value
-				 */
-				sym->flags |= SYMBOL_WRITE;
-				if (sym_has_value(sym)) {
-					newval.tri = EXPR_AND(sym->def[S_DEF_USER].tri,
-							      sym->visible);
-					goto calc_newval;
-				}
-			}
-			if (sym->rev_dep.tri != no)
-				sym->flags |= SYMBOL_WRITE;
-			if (!sym_is_choice(sym)) {
-				prop = sym_get_default_prop(sym);
-				if (prop) {
-					sym->flags |= SYMBOL_WRITE;
-					newval.tri = EXPR_AND(expr_calc_value(prop->expr),
-							      prop->visible.tri);
-				}
-			}
-		calc_newval:
-			if (sym->dir_dep.tri == no && sym->rev_dep.tri != no) {
-				struct expr *e;
-				e = expr_simplify_unmet_dep(sym->rev_dep.expr,
-				    sym->dir_dep.expr);
-				fprintf(stderr, "warning: (");
-				expr_fprint(e, stderr);
-				fprintf(stderr, ") selects %s which has unmet direct dependencies (",
-					sym->name);
-				expr_fprint(sym->dir_dep.expr, stderr);
-				fprintf(stderr, ")\n");
-				expr_free(e);
-			}
-			newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri);
-		}
-		if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN)
-			newval.tri = yes;
-		break;
-	case S_STRING:
-	case S_HEX:
-	case S_INT:
-		if (sym->visible != no) {
-			sym->flags |= SYMBOL_WRITE;
-			if (sym_has_value(sym)) {
-				newval.val = sym->def[S_DEF_USER].val;
-				break;
-			}
-		}
-		prop = sym_get_default_prop(sym);
-		if (prop) {
-			struct symbol *ds = prop_get_symbol(prop);
-			if (ds) {
-				sym->flags |= SYMBOL_WRITE;
-				sym_calc_value(ds);
-				newval.val = ds->curr.val;
-			}
-		}
-		break;
-	default:
-		;
-	}
-
-	sym->curr = newval;
-	if (sym_is_choice(sym) && newval.tri == yes)
-		sym->curr.val = sym_calc_choice(sym);
-	sym_validate_range(sym);
-
-	if (memcmp(&oldval, &sym->curr, sizeof(oldval))) {
-		sym_set_changed(sym);
-		if (modules_sym == sym) {
-			sym_set_all_changed();
-			modules_val = modules_sym->curr.tri;
-		}
-	}
-
-	if (sym_is_choice(sym)) {
-		struct symbol *choice_sym;
-
-		prop = sym_get_choice_prop(sym);
-		expr_list_for_each_sym(prop->expr, e, choice_sym) {
-			if ((sym->flags & SYMBOL_WRITE) &&
-			    choice_sym->visible != no)
-				choice_sym->flags |= SYMBOL_WRITE;
-			if (sym->flags & SYMBOL_CHANGED)
-				sym_set_changed(choice_sym);
-		}
-	}
-
-	if (sym->flags & SYMBOL_AUTO)
-		sym->flags &= ~SYMBOL_WRITE;
-}
-
-void sym_clear_all_valid(void)
-{
-	struct symbol *sym;
-	int i;
-
-	for_all_symbols(i, sym)
-		sym->flags &= ~SYMBOL_VALID;
-	sym_add_change_count(1);
-	if (modules_sym)
-		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);
-
-	if (sym->visible == no)
-		return false;
-
-	if (type != S_BOOLEAN && type != S_TRISTATE)
-		return false;
-
-	if (type == S_BOOLEAN && val == mod)
-		return false;
-	if (sym->visible <= sym->rev_dep.tri)
-		return false;
-	if (sym_is_choice_value(sym) && sym->visible == yes)
-		return val == yes;
-	return val >= sym->rev_dep.tri && val <= sym->visible;
-}
-
-bool sym_set_tristate_value(struct symbol *sym, tristate val)
-{
-	tristate oldval = sym_get_tristate_value(sym);
-
-	if (oldval != val && !sym_tristate_within_range(sym, val))
-		return false;
-
-	if (!(sym->flags & SYMBOL_DEF_USER)) {
-		sym->flags |= SYMBOL_DEF_USER;
-		sym_set_changed(sym);
-	}
-	/*
-	 * setting a choice value also resets the new flag of the choice
-	 * symbol and all other choice values.
-	 */
-	if (sym_is_choice_value(sym) && val == yes) {
-		struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
-		struct property *prop;
-		struct expr *e;
-
-		cs->def[S_DEF_USER].val = sym;
-		cs->flags |= SYMBOL_DEF_USER;
-		prop = sym_get_choice_prop(cs);
-		for (e = prop->expr; e; e = e->left.expr) {
-			if (e->right.sym->visible != no)
-				e->right.sym->flags |= SYMBOL_DEF_USER;
-		}
-	}
-
-	sym->def[S_DEF_USER].tri = val;
-	if (oldval != val)
-		sym_clear_all_valid();
-
-	return true;
-}
-
-tristate sym_toggle_tristate_value(struct symbol *sym)
-{
-	tristate oldval, newval;
-
-	oldval = newval = sym_get_tristate_value(sym);
-	do {
-		switch (newval) {
-		case no:
-			newval = mod;
-			break;
-		case mod:
-			newval = yes;
-			break;
-		case yes:
-			newval = no;
-			break;
-		}
-		if (sym_set_tristate_value(sym, newval))
-			break;
-	} while (oldval != newval);
-	return newval;
-}
-
-bool sym_string_valid(struct symbol *sym, const char *str)
-{
-	signed char ch;
-
-	switch (sym->type) {
-	case S_STRING:
-		return true;
-	case S_INT:
-		ch = *str++;
-		if (ch == '-')
-			ch = *str++;
-		if (!isdigit(ch))
-			return false;
-		if (ch == '0' && *str != 0)
-			return false;
-		while ((ch = *str++)) {
-			if (!isdigit(ch))
-				return false;
-		}
-		return true;
-	case S_HEX:
-		if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
-			str += 2;
-		ch = *str++;
-		do {
-			if (!isxdigit(ch))
-				return false;
-		} while ((ch = *str++));
-		return true;
-	case S_BOOLEAN:
-	case S_TRISTATE:
-		switch (str[0]) {
-		case 'y': case 'Y':
-		case 'm': case 'M':
-		case 'n': case 'N':
-			return true;
-		}
-		return false;
-	default:
-		return false;
-	}
-}
-
-bool sym_string_within_range(struct symbol *sym, const char *str)
-{
-	struct property *prop;
-	int val;
-
-	switch (sym->type) {
-	case S_STRING:
-		return sym_string_valid(sym, str);
-	case S_INT:
-		if (!sym_string_valid(sym, str))
-			return false;
-		prop = sym_get_range_prop(sym);
-		if (!prop)
-			return true;
-		val = strtol(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:
-		if (!sym_string_valid(sym, str))
-			return false;
-		prop = sym_get_range_prop(sym);
-		if (!prop)
-			return true;
-		val = strtol(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:
-	case S_TRISTATE:
-		switch (str[0]) {
-		case 'y': case 'Y':
-			return sym_tristate_within_range(sym, yes);
-		case 'm': case 'M':
-			return sym_tristate_within_range(sym, mod);
-		case 'n': case 'N':
-			return sym_tristate_within_range(sym, no);
-		}
-		return false;
-	default:
-		return false;
-	}
-}
-
-bool sym_set_string_value(struct symbol *sym, const char *newval)
-{
-	const char *oldval;
-	char *val;
-	int size;
-
-	switch (sym->type) {
-	case S_BOOLEAN:
-	case S_TRISTATE:
-		switch (newval[0]) {
-		case 'y': case 'Y':
-			return sym_set_tristate_value(sym, yes);
-		case 'm': case 'M':
-			return sym_set_tristate_value(sym, mod);
-		case 'n': case 'N':
-			return sym_set_tristate_value(sym, no);
-		}
-		return false;
-	default:
-		;
-	}
-
-	if (!sym_string_within_range(sym, newval))
-		return false;
-
-	if (!(sym->flags & SYMBOL_DEF_USER)) {
-		sym->flags |= SYMBOL_DEF_USER;
-		sym_set_changed(sym);
-	}
-
-	oldval = sym->def[S_DEF_USER].val;
-	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);
-		*val++ = '0';
-		*val++ = 'x';
-	} else if (!oldval || strcmp(oldval, newval))
-		sym->def[S_DEF_USER].val = val = malloc(size);
-	else
-		return true;
-
-	strcpy(val, newval);
-	free((void *)oldval);
-	sym_clear_all_valid();
-
-	return true;
-}
-
-/*
- * Find the default value associated to a symbol.
- * For tristate symbol handle the modules=n case
- * in which case "m" becomes "y".
- * If the symbol does not have any default then fallback
- * to the fixed default values.
- */
-const char *sym_get_string_default(struct symbol *sym)
-{
-	struct property *prop;
-	struct symbol *ds;
-	const char *str;
-	tristate val;
-
-	sym_calc_visibility(sym);
-	sym_calc_value(modules_sym);
-	val = symbol_no.curr.tri;
-	str = symbol_empty.curr.val;
-
-	/* If symbol has a default value look it up */
-	prop = sym_get_default_prop(sym);
-	if (prop != NULL) {
-		switch (sym->type) {
-		case S_BOOLEAN:
-		case S_TRISTATE:
-			/* The visibility may limit the value from yes => mod */
-			val = EXPR_AND(expr_calc_value(prop->expr), prop->visible.tri);
-			break;
-		default:
-			/*
-			 * The following fails to handle the situation
-			 * where a default value is further limited by
-			 * the valid range.
-			 */
-			ds = prop_get_symbol(prop);
-			if (ds != NULL) {
-				sym_calc_value(ds);
-				str = (const char *)ds->curr.val;
-			}
-		}
-	}
-
-	/* Handle select statements */
-	val = EXPR_OR(val, sym->rev_dep.tri);
-
-	/* transpose mod to yes if modules are not enabled */
-	if (val == mod)
-		if (!sym_is_choice_value(sym) && modules_sym->curr.tri == no)
-			val = yes;
-
-	/* transpose mod to yes if type is bool */
-	if (sym->type == S_BOOLEAN && val == mod)
-		val = yes;
-
-	switch (sym->type) {
-	case S_BOOLEAN:
-	case S_TRISTATE:
-		switch (val) {
-		case no: return "n";
-		case mod: return "m";
-		case yes: return "y";
-		}
-	case S_INT:
-	case S_HEX:
-		return str;
-	case S_STRING:
-		return str;
-	case S_OTHER:
-	case S_UNKNOWN:
-		break;
-	}
-	return "";
-}
-
-const char *sym_get_string_value(struct symbol *sym)
-{
-	tristate val;
-
-	switch (sym->type) {
-	case S_BOOLEAN:
-	case S_TRISTATE:
-		val = sym_get_tristate_value(sym);
-		switch (val) {
-		case no:
-			return "n";
-		case mod:
-			return "m";
-		case yes:
-			return "y";
-		}
-		break;
-	default:
-		;
-	}
-	return (const char *)sym->curr.val;
-}
-
-bool sym_is_changable(struct symbol *sym)
-{
-	return sym->visible > sym->rev_dep.tri;
-}
-
-static unsigned strhash(const char *s)
-{
-	/* fnv32 hash */
-	unsigned hash = 2166136261U;
-	for (; *s; s++)
-		hash = (hash ^ *s) * 0x01000193;
-	return hash;
-}
-
-struct symbol *sym_lookup(const char *name, int flags)
-{
-	struct symbol *symbol;
-	char *new_name;
-	int hash;
-
-	if (name) {
-		if (name[0] && !name[1]) {
-			switch (name[0]) {
-			case 'y': return &symbol_yes;
-			case 'm': return &symbol_mod;
-			case 'n': return &symbol_no;
-			}
-		}
-		hash = strhash(name) % SYMBOL_HASHSIZE;
-
-		for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
-			if (symbol->name &&
-			    !strcmp(symbol->name, name) &&
-			    (flags ? symbol->flags & flags
-				   : !(symbol->flags & (SYMBOL_CONST|SYMBOL_CHOICE))))
-				return symbol;
-		}
-		new_name = strdup(name);
-	} else {
-		new_name = NULL;
-		hash = 0;
-	}
-
-	symbol = malloc(sizeof(*symbol));
-	memset(symbol, 0, sizeof(*symbol));
-	symbol->name = new_name;
-	symbol->type = S_UNKNOWN;
-	symbol->flags |= flags;
-
-	symbol->next = symbol_hash[hash];
-	symbol_hash[hash] = symbol;
-
-	return symbol;
-}
-
-struct symbol *sym_find(const char *name)
-{
-	struct symbol *symbol = NULL;
-	int hash = 0;
-
-	if (!name)
-		return NULL;
-
-	if (name[0] && !name[1]) {
-		switch (name[0]) {
-		case 'y': return &symbol_yes;
-		case 'm': return &symbol_mod;
-		case 'n': return &symbol_no;
-		}
-	}
-	hash = strhash(name) % SYMBOL_HASHSIZE;
-
-	for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
-		if (symbol->name &&
-		    !strcmp(symbol->name, name) &&
-		    !(symbol->flags & SYMBOL_CONST))
-				break;
-	}
-
-	return symbol;
-}
-
-/*
- * Expand symbol's names embedded in the string given in argument. Symbols'
- * name to be expanded shall be prefixed by a '$'. Unknown symbol expands to
- * the empty string.
- */
-const char *sym_expand_string_value(const char *in)
-{
-	const char *src;
-	char *res;
-	size_t reslen;
-
-	reslen = strlen(in) + 1;
-	res = malloc(reslen);
-	res[0] = '\0';
-
-	while ((src = strchr(in, '$'))) {
-		char *p, name[SYMBOL_MAXLENGTH];
-		const char *symval = "";
-		struct symbol *sym;
-		size_t newlen;
-
-		strncat(res, in, src - in);
-		src++;
-
-		p = name;
-		while (isalnum(*src) || *src == '_')
-			*p++ = *src++;
-		*p = '\0';
-
-		sym = sym_find(name);
-		if (sym != NULL) {
-			sym_calc_value(sym);
-			symval = sym_get_string_value(sym);
-		}
-
-		newlen = strlen(res) + strlen(symval) + strlen(src) + 1;
-		if (newlen > reslen) {
-			reslen = newlen;
-			res = realloc(res, reslen);
-		}
-
-		strcat(res, symval);
-		in = src;
-	}
-	strcat(res, in);
-
-	return res;
-}
-
-struct symbol **sym_re_search(const char *pattern)
-{
-	struct symbol *sym, **sym_arr = NULL;
-	int i, cnt, size;
-	regex_t re;
-
-	cnt = size = 0;
-	/* Skip if empty */
-	if (strlen(pattern) == 0)
-		return NULL;
-	if (regcomp(&re, pattern, REG_EXTENDED|REG_NOSUB|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))
-			continue;
-		if (cnt + 1 >= size) {
-			void *tmp = sym_arr;
-			size += 16;
-			sym_arr = realloc(sym_arr, size * sizeof(struct symbol *));
-			if (!sym_arr) {
-				free(tmp);
-				return NULL;
-			}
-		}
-		sym_calc_value(sym);
-		sym_arr[cnt++] = sym;
-	}
-	if (sym_arr)
-		sym_arr[cnt] = NULL;
-	regfree(&re);
-
-	return sym_arr;
-}
-
-/*
- * 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.
- */
-static struct dep_stack {
-	struct dep_stack *prev, *next;
-	struct symbol *sym;
-	struct property *prop;
-	struct expr *expr;
-} *check_top;
-
-static void dep_stack_insert(struct dep_stack *stack, struct symbol *sym)
-{
-	memset(stack, 0, sizeof(*stack));
-	if (check_top)
-		check_top->next = stack;
-	stack->prev = check_top;
-	stack->sym = sym;
-	check_top = stack;
-}
-
-static void dep_stack_remove(void)
-{
-	check_top = check_top->prev;
-	if (check_top)
-		check_top->next = NULL;
-}
-
-/*
- * Called when we have detected a recursive dependency.
- * check_top point to the top of the stact so we use
- * the ->prev pointer to locate the bottom of the stack.
- */
-static void sym_check_print_recursive(struct symbol *last_sym)
-{
-	struct dep_stack *stack;
-	struct symbol *sym, *next_sym;
-	struct menu *menu = NULL;
-	struct property *prop;
-	struct dep_stack cv_stack;
-
-	if (sym_is_choice_value(last_sym)) {
-		dep_stack_insert(&cv_stack, last_sym);
-		last_sym = prop_get_symbol(sym_get_choice_prop(last_sym));
-	}
-
-	for (stack = check_top; stack != NULL; stack = stack->prev)
-		if (stack->sym == last_sym)
-			break;
-	if (!stack) {
-		fprintf(stderr, "unexpected recursive dependency error\n");
-		return;
-	}
-
-	for (; stack; stack = stack->next) {
-		sym = stack->sym;
-		next_sym = stack->next ? stack->next->sym : last_sym;
-		prop = stack->prop;
-		if (prop == NULL)
-			prop = stack->sym->prop;
-
-		/* for choice values find the menu entry (used below) */
-		if (sym_is_choice(sym) || sym_is_choice_value(sym)) {
-			for (prop = sym->prop; prop; prop = prop->next) {
-				menu = prop->menu;
-				if (prop->menu)
-					break;
-			}
-		}
-		if (stack->sym == last_sym)
-			fprintf(stderr, "%s:%d:error: recursive dependency detected!\n",
-				prop->file->name, prop->lineno);
-		if (stack->expr) {
-			fprintf(stderr, "%s:%d:\tsymbol %s %s value contains %s\n",
-				prop->file->name, prop->lineno,
-				sym->name ? sym->name : "<choice>",
-				prop_get_type_name(prop->type),
-				next_sym->name ? next_sym->name : "<choice>");
-		} else if (stack->prop) {
-			fprintf(stderr, "%s:%d:\tsymbol %s depends on %s\n",
-				prop->file->name, prop->lineno,
-				sym->name ? sym->name : "<choice>",
-				next_sym->name ? next_sym->name : "<choice>");
-		} else if (sym_is_choice(sym)) {
-			fprintf(stderr, "%s:%d:\tchoice %s contains symbol %s\n",
-				menu->file->name, menu->lineno,
-				sym->name ? sym->name : "<choice>",
-				next_sym->name ? next_sym->name : "<choice>");
-		} else if (sym_is_choice_value(sym)) {
-			fprintf(stderr, "%s:%d:\tsymbol %s is part of choice %s\n",
-				menu->file->name, menu->lineno,
-				sym->name ? sym->name : "<choice>",
-				next_sym->name ? next_sym->name : "<choice>");
-		} else {
-			fprintf(stderr, "%s:%d:\tsymbol %s is selected by %s\n",
-				prop->file->name, prop->lineno,
-				sym->name ? sym->name : "<choice>",
-				next_sym->name ? next_sym->name : "<choice>");
-		}
-	}
-
-	if (check_top == &cv_stack)
-		dep_stack_remove();
-}
-
-static struct symbol *sym_check_expr_deps(struct expr *e)
-{
-	struct symbol *sym;
-
-	if (!e)
-		return NULL;
-	switch (e->type) {
-	case E_OR:
-	case E_AND:
-		sym = sym_check_expr_deps(e->left.expr);
-		if (sym)
-			return sym;
-		return sym_check_expr_deps(e->right.expr);
-	case E_NOT:
-		return sym_check_expr_deps(e->left.expr);
-	case E_EQUAL:
-	case E_UNEQUAL:
-		sym = sym_check_deps(e->left.sym);
-		if (sym)
-			return sym;
-		return sym_check_deps(e->right.sym);
-	case E_SYMBOL:
-		return sym_check_deps(e->left.sym);
-	default:
-		break;
-	}
-	printf("Oops! How to check %d?\n", e->type);
-	return NULL;
-}
-
-/* return NULL when dependencies are OK */
-static struct symbol *sym_check_sym_deps(struct symbol *sym)
-{
-	struct symbol *sym2;
-	struct property *prop;
-	struct dep_stack stack;
-
-	dep_stack_insert(&stack, sym);
-
-	sym2 = sym_check_expr_deps(sym->rev_dep.expr);
-	if (sym2)
-		goto out;
-
-	for (prop = sym->prop; prop; prop = prop->next) {
-		if (prop->type == P_CHOICE || prop->type == P_SELECT)
-			continue;
-		stack.prop = prop;
-		sym2 = sym_check_expr_deps(prop->visible.expr);
-		if (sym2)
-			break;
-		if (prop->type != P_DEFAULT || sym_is_choice(sym))
-			continue;
-		stack.expr = prop->expr;
-		sym2 = sym_check_expr_deps(prop->expr);
-		if (sym2)
-			break;
-		stack.expr = NULL;
-	}
-
-out:
-	dep_stack_remove();
-
-	return sym2;
-}
-
-static struct symbol *sym_check_choice_deps(struct symbol *choice)
-{
-	struct symbol *sym, *sym2;
-	struct property *prop;
-	struct expr *e;
-	struct dep_stack stack;
-
-	dep_stack_insert(&stack, choice);
-
-	prop = sym_get_choice_prop(choice);
-	expr_list_for_each_sym(prop->expr, e, sym)
-		sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
-
-	choice->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
-	sym2 = sym_check_sym_deps(choice);
-	choice->flags &= ~SYMBOL_CHECK;
-	if (sym2)
-		goto out;
-
-	expr_list_for_each_sym(prop->expr, e, sym) {
-		sym2 = sym_check_sym_deps(sym);
-		if (sym2)
-			break;
-	}
-out:
-	expr_list_for_each_sym(prop->expr, e, sym)
-		sym->flags &= ~SYMBOL_CHECK;
-
-	if (sym2 && sym_is_choice_value(sym2) &&
-	    prop_get_symbol(sym_get_choice_prop(sym2)) == choice)
-		sym2 = choice;
-
-	dep_stack_remove();
-
-	return sym2;
-}
-
-struct symbol *sym_check_deps(struct symbol *sym)
-{
-	struct symbol *sym2;
-	struct property *prop;
-
-	if (sym->flags & SYMBOL_CHECK) {
-		sym_check_print_recursive(sym);
-		return sym;
-	}
-	if (sym->flags & SYMBOL_CHECKED)
-		return NULL;
-
-	if (sym_is_choice_value(sym)) {
-		struct dep_stack stack;
-
-		/* for choice groups start the check with main choice symbol */
-		dep_stack_insert(&stack, sym);
-		prop = sym_get_choice_prop(sym);
-		sym2 = sym_check_deps(prop_get_symbol(prop));
-		dep_stack_remove();
-	} else if (sym_is_choice(sym)) {
-		sym2 = sym_check_choice_deps(sym);
-	} else {
-		sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
-		sym2 = sym_check_sym_deps(sym);
-		sym->flags &= ~SYMBOL_CHECK;
-	}
-
-	if (sym2 && sym2 == sym)
-		sym2 = NULL;
-
-	return sym2;
-}
-
-struct property *prop_alloc(enum prop_type type, struct symbol *sym)
-{
-	struct property *prop;
-	struct property **propp;
-
-	prop = malloc(sizeof(*prop));
-	memset(prop, 0, sizeof(*prop));
-	prop->type = type;
-	prop->sym = sym;
-	prop->file = current_file;
-	prop->lineno = zconf_lineno();
-
-	/* append property to the prop list of symbol */
-	if (sym) {
-		for (propp = &sym->prop; *propp; propp = &(*propp)->next)
-			;
-		*propp = prop;
-	}
-
-	return prop;
-}
-
-struct symbol *prop_get_symbol(struct property *prop)
-{
-	if (prop->expr && (prop->expr->type == E_SYMBOL ||
-			   prop->expr->type == E_LIST))
-		return prop->expr->left.sym;
-	return NULL;
-}
-
-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:
-		return "menu";
-	case P_DEFAULT:
-		return "default";
-	case P_CHOICE:
-		return "choice";
-	case P_SELECT:
-		return "select";
-	case P_RANGE:
-		return "range";
-	case P_SYMBOL:
-		return "symbol";
-	case P_UNKNOWN:
-		break;
-	}
-	return "unknown";
-}
-
-static void prop_add_env(const char *env)
-{
-	struct symbol *sym, *sym2;
-	struct property *prop;
-	char *p;
-
-	sym = current_entry->sym;
-	sym->flags |= SYMBOL_AUTO;
-	for_all_properties(sym, prop, P_ENV) {
-		sym2 = prop_get_symbol(prop);
-		if (strcmp(sym2->name, env))
-			menu_warn(current_entry, "redefining environment symbol from %s",
-				  sym2->name);
-		return;
-	}
-
-	prop = prop_alloc(P_ENV, sym);
-	prop->expr = expr_alloc_symbol(sym_lookup(env, SYMBOL_CONST));
-
-	sym_env_list = expr_alloc_one(E_LIST, sym_env_list);
-	sym_env_list->right.sym = sym;
-
-	p = getenv(env);
-	if (p)
-		sym_add_default(sym, p);
-	else
-		menu_warn(current_entry, "environment variable %s undefined", env);
-}