scripts/config/confdata.c - codeaurora/busybox - Gitiles

 /*
  * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
  * Released under the terms of the GNU GPL v2.0.
  */

 #include <sys/stat.h>
 #include <ctype.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>

 #define LKC_DIRECT_LINK
 #include "lkc.h"

 const char conf_def_filename[] = ".config";

 const char conf_defname[] = "defconfig";

 const char *conf_confnames[] = {
 	".config",
 	conf_defname,
 	NULL,
 };

 static char *conf_expand_value(const char *in)
 {
 	struct symbol *sym;
 	const char *src;
 	static char res_value[SYMBOL_MAXLENGTH];
 	char *dst, name[SYMBOL_MAXLENGTH];

 	res_value[0] = 0;
 	dst = name;
 	while ((src = strchr(in, '$'))) {
 		strncat(res_value, in, src - in);
 		src++;
 		dst = name;
 		while (isalnum(*src) || *src == '_')
 			*dst++ = *src++;
 		*dst = 0;
 		sym = sym_lookup(name, 0);
 		sym_calc_value(sym);
 		strcat(res_value, sym_get_string_value(sym));
 		in = src;
 	}
 	strcat(res_value, in);

 	return res_value;
 }

 char *conf_get_default_confname(void)
 {
 	struct stat buf;
 	static char fullname[PATH_MAX+1];
 	char *env, *name;

 	name = conf_expand_value(conf_defname);
 	env = getenv(SRCTREE);
 	if (env) {
 		sprintf(fullname, "%s/%s", env, name);
 		if (!stat(fullname, &buf))
 			return fullname;
 	}
 	return name;
 }

 int conf_read(const char *name)
 {
 	FILE *in = NULL;
 	char line[1024];
 	char *p, *p2;
 	int lineno = 0;
 	struct symbol *sym;
 	struct property *prop;
 	struct expr *e;
 	int i;

 	if (name) {
 		in = zconf_fopen(name);
 	} else {
 		const char **names = conf_confnames;
 		while ((name = *names++)) {
 			name = conf_expand_value(name);
 			in = zconf_fopen(name);
 			if (in) {
 				printf("#\n"
 				       "# using defaults found in %s\n"
 				       "#\n", name);
 				break;
 			}
 		}
 	}

 	if (!in)
 		return 1;

 	for_all_symbols(i, sym) {
 		sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED;
 		sym->flags &= ~SYMBOL_VALID;
 		switch (sym->type) {
 		case S_INT:
 		case S_HEX:
 		case S_STRING:
 			if (sym->user.val)
 				free(sym->user.val);
 		default:
 			sym->user.val = NULL;
 			sym->user.tri = no;
 		}
 	}

 	while (fgets(line, sizeof(line), in)) {
 		lineno++;
 		sym = NULL;
 		switch (line[0]) {
 		case '#':
 			if (line[1]!=' ')
 				continue;
 			p = strchr(line + 2, ' ');
 			if (!p)
 				continue;
 			*p++ = 0;
 			if (strncmp(p, "is not set", 10))
 				continue;
 			sym = sym_find(line + 2);
 			if (!sym) {
 				fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line + 2);
 				break;
 			}
 			switch (sym->type) {
 			case S_BOOLEAN:
 			case S_TRISTATE:
 				sym->user.tri = no;
 				sym->flags &= ~SYMBOL_NEW;
 				break;
 			default:
 				;
 			}
 			break;

 		case 'A' ... 'Z':
 			p = strchr(line, '=');
 			if (!p)
 				continue;
 			*p++ = 0;
 			p2 = strchr(p, '\n');
 			if (p2)
 				*p2 = 0;
 			sym = sym_find(line);
 			if (!sym) {
 				fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line);
 				break;
 			}
 			switch (sym->type) {
 			case S_TRISTATE:
 				if (p[0] == 'm') {
 					sym->user.tri = mod;
 					sym->flags &= ~SYMBOL_NEW;
 					break;
 				}
 			case S_BOOLEAN:
 				if (p[0] == 'y') {
 					sym->user.tri = yes;
 					sym->flags &= ~SYMBOL_NEW;
 					break;
 				}
 				if (p[0] == 'n') {
 					sym->user.tri = no;
 					sym->flags &= ~SYMBOL_NEW;
 					break;
 				}
 				break;
 			case S_STRING:
 				if (*p++ != '"')
 					break;
 				for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
 					if (*p2 == '"') {
 						*p2 = 0;
 						break;
 					}
 					memmove(p2, p2 + 1, strlen(p2));
 				}
 				if (!p2) {
 					fprintf(stderr, "%s:%d: invalid string found\n", name, lineno);
 					exit(1);
 				}
 			case S_INT:
 			case S_HEX:
 				if (sym_string_valid(sym, p)) {
 					sym->user.val = strdup(p);
 					sym->flags &= ~SYMBOL_NEW;
 				} else {
 					fprintf(stderr, "%s:%d: symbol value '%s' invalid for %s\n", name, lineno, p, sym->name);
 					exit(1);
 				}
 				break;
 			default:
 				;
 			}
 			break;
 		case '\n':
 			break;
 		default:
 			continue;
 		}
 		if (sym && sym_is_choice_value(sym)) {
 			struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
 			switch (sym->user.tri) {
 			case no:
 				break;
 			case mod:
 				if (cs->user.tri == yes)
 					/* warn? */;
 				break;
 			case yes:
 				if (cs->user.tri != no)
 					/* warn? */;
 				cs->user.val = sym;
 				break;
 			}
 			cs->user.tri = E_OR(cs->user.tri, sym->user.tri);
 			cs->flags &= ~SYMBOL_NEW;
 		}
 	}
 	fclose(in);

 	if (modules_sym)
 		sym_calc_value(modules_sym);
 	for_all_symbols(i, sym) {
 		sym_calc_value(sym);
 		if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
 			if (sym->visible == no)
 				sym->flags |= SYMBOL_NEW;
 			switch (sym->type) {
 			case S_STRING:
 			case S_INT:
 			case S_HEX:
 				if (!sym_string_within_range(sym, sym->user.val))
 					sym->flags |= SYMBOL_NEW;
 			default:
 				break;
 			}
 		}
 		if (!sym_is_choice(sym))
 			continue;
 		prop = sym_get_choice_prop(sym);
 		for (e = prop->expr; e; e = e->left.expr)
 			if (e->right.sym->visible != no)
 				sym->flags |= e->right.sym->flags & SYMBOL_NEW;
 	}

 	sym_change_count = 1;

 	return 0;
 }

 struct menu *next_menu(struct menu *menu)
 {
 	if (menu->list) return menu->list;
 	do {
 		if (menu->next) {
 			menu = menu->next;
 			break;
 		}
 	} while ((menu = menu->parent));

 	return menu;
 }

 #define SYMBOL_FORCEWRITE (1<<31)

 int conf_write(const char *name)
 {
 	FILE *out, *out_h;
 	struct symbol *sym;
 	struct menu *menu;
 	const char *basename;
 	char dirname[128], tmpname[128], newname[128];
 	int type, l;
 	const char *str;
 	const char *opt_name;

 	dirname[0] = 0;
 	if (name && name[0]) {
 		struct stat st;
 		char *slash;

 		if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
 			strcpy(dirname, name);
 			strcat(dirname, "/");
 			basename = conf_def_filename;
 		} else if ((slash = strrchr(name, '/'))) {
 			int size = slash - name + 1;
 			memcpy(dirname, name, size);
 			dirname[size] = 0;
 			if (slash[1])
 				basename = slash + 1;
 			else
 				basename = conf_def_filename;
 		} else
 			basename = name;
 	} else
 		basename = conf_def_filename;

 	sprintf(newname, "%s.tmpconfig.%d", dirname, (int)getpid());
 	out = fopen(newname, "w");
 	if (!out)
 		return 1;
 	out_h = NULL;
 	if (!name) {
 		out_h = fopen(".tmpconfig.h", "w");
 		if (!out_h)
 			return 1;
 	}
 	fprintf(out, "#\n"
 		     "# Automatically generated make config: don't edit\n"
 		     "#\n");
 	if (out_h) {
 		fprintf(out_h, "#ifndef BB_CONFIG_H\n#define BB_CONFIG_H\n");
 		fprintf(out_h, "/*\n"
 			     " * Automatically generated header file: don't edit\n"
 			     " */\n\n"
 			     "/* Version Number */\n"
 			     "#define BB_VER \"%s\"\n"
 			     "#define BB_BT \"%s\"\n",
 			     getenv("VERSION"),
 			     getenv("BUILDTIME"));
 		if (getenv("EXTRA_VERSION"))
 			fprintf(out_h, "#define BB_EXTRA_VERSION \"%s\"\n",
 				     getenv("EXTRA_VERSION"));
 		fprintf(out_h, "\n");
 	}

 	if (!sym_change_count)
 		sym_clear_all_valid();

 	/* Force write of all non-duplicate symbols. */

 	/* Write out everything by default. */
 	for(menu = rootmenu.list; menu; menu = next_menu(menu))
 		if (menu->sym) menu->sym->flags |= SYMBOL_FORCEWRITE;

 	menu = rootmenu.list;
 	while (menu) {
 		sym = menu->sym;
 		if (!sym) {
 			if (!menu_is_visible(menu))
 				goto next;
 			str = menu_get_prompt(menu);
 			fprintf(out, "\n"
 				     "#\n"
 				     "# %s\n"
 				     "#\n", str);
 			if (out_h)
 				fprintf(out_h, "\n"
 					       "/*\n"
 					       " * %s\n"
 					       " */\n", str);
 		} else if (!(sym->flags & SYMBOL_CHOICE)) {
 			sym_calc_value(sym);
 			if (!(sym->flags & SYMBOL_FORCEWRITE))
 				goto next;

 			sym->flags &= ~SYMBOL_FORCEWRITE;
 			type = sym->type;
 			if (type == S_TRISTATE) {
 				sym_calc_value(modules_sym);
 				if (modules_sym->curr.tri == no)
 					type = S_BOOLEAN;
 			}
 			opt_name = strchr(sym->name, '_');
 			if(opt_name == NULL)
 				opt_name = sym->name;
 			else
 				opt_name++;
 			switch (type) {
 			case S_BOOLEAN:
 			case S_TRISTATE:
 				switch (sym_get_tristate_value(sym)) {
 				case no:
 					fprintf(out, "# %s is not set\n", sym->name);
 					if (out_h) {
 						fprintf(out_h, "#undef %s\n", sym->name);
 						fprintf(out_h, "#define ENABLE_%s 0\n", opt_name);
 						fprintf(out_h, "#define USE_%s(...)\n", opt_name);
 						fprintf(out_h, "#define UNUSE_%s(...)  __VA_ARGS__\n", opt_name);
 					}
 					break;
 				case mod:
 #if 0
 					fprintf(out, "%s=m\n", sym->name);
 					if (out_h)
 						fprintf(out_h, "#define %s_MODULE 1\n", sym->name);
 #endif
 					break;
 				case yes:
 					fprintf(out, "%s=y\n", sym->name);
 					if (out_h) {
 						fprintf(out_h, "#define %s 1\n", sym->name);
 						fprintf(out_h, "#define ENABLE_%s 1\n", opt_name);
 						fprintf(out_h, "#define USE_%s(...)  __VA_ARGS__\n", opt_name);
 						fprintf(out_h, "#define UNUSE_%s(...)\n", opt_name);
 					}
 					break;
 				}
 				break;
 			case S_STRING:
 				// fix me
 				str = sym_get_string_value(sym);
 				fprintf(out, "%s=\"", sym->name);
 				if (out_h)
 					fprintf(out_h, "#define %s \"", sym->name);
 				do {
 					l = strcspn(str, "\"\\");
 					if (l) {
 						fwrite(str, l, 1, out);
 						if (out_h)
 							fwrite(str, l, 1, out_h);
 					}
 					str += l;
 					while (*str == '\\' || *str == '"') {
 						fprintf(out, "\\%c", *str);
 						if (out_h)
 							fprintf(out_h, "\\%c", *str);
 						str++;
 					}
 				} while (*str);
 				fputs("\"\n", out);
 				if (out_h) {
 					fputs("\"\n", out_h);
 					fprintf(out_h, "#define ENABLE_%s 1\n", opt_name);
 					fprintf(out_h, "#define USE_%s(...)  __VA_ARGS__\n", opt_name);
 					fprintf(out_h, "#define UNUSE_%s(...)\n", opt_name);
 				}
 				break;
 			case S_HEX:
 				str = sym_get_string_value(sym);
 				if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
 					fprintf(out, "%s=%s\n", sym->name, *str ? str : "0");
 					if (out_h) {
 						fprintf(out_h, "#define %s 0x%s\n", sym->name, str);
 						fprintf(out_h, "#define ENABLE_%s 1\n", opt_name);
 						fprintf(out_h, "#define USE_%s(...)  __VA_ARGS__\n", opt_name);
 						fprintf(out_h, "#define UNUSE_%s(...)\n", opt_name);
 					}
 					break;
 				}
 			case S_INT:
 				str = sym_get_string_value(sym);
 				fprintf(out, "%s=%s\n", sym->name, *str ? str : "0");
 				if (out_h) {
 					fprintf(out_h, "#define %s %s\n", sym->name, str);
 					fprintf(out_h, "#define ENABLE_%s 1\n", opt_name);
 					fprintf(out_h, "#define USE_%s(...)  __VA_ARGS__\n", opt_name);
 					fprintf(out_h, "#define UNUSE_%s(...)\n", opt_name);
 				}
 				break;
 			}
 			if (out_h)
 				fprintf(out_h, "\n");
 		}
 next:
 		menu = next_menu(menu);
 	}
 	fclose(out);
 	if (out_h) {
 		fprintf(out_h, "#endif /* BB_CONFIG_H */\n");
 		fclose(out_h);
 		rename(".tmpconfig.h", "include/bb_config.h");
 		file_write_dep(NULL);
 	}
 	if (!name || basename != conf_def_filename) {
 		if (!name)
 			name = conf_def_filename;
 		sprintf(tmpname, "%s.old", name);
 		rename(name, tmpname);
 	}
 	sprintf(tmpname, "%s%s", dirname, basename);
 	if (rename(newname, tmpname))
 		return 1;

 	sym_change_count = 0;

 	return 0;
 }
	/*
	* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
	* Released under the terms of the GNU GPL v2.0.
	*/

	#include <sys/stat.h>
	#include <ctype.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <unistd.h>

	#define LKC_DIRECT_LINK
	#include "lkc.h"

	const char conf_def_filename[] = ".config";

	const char conf_defname[] = "defconfig";

	const char *conf_confnames[] = {
	".config",
	conf_defname,
	NULL,
	};

	static char conf_expand_value(const char in)
	{
	struct symbol *sym;
	const char *src;
	static char res_value[SYMBOL_MAXLENGTH];
	char *dst, name[SYMBOL_MAXLENGTH];

	res_value[0] = 0;
	dst = name;
	while ((src = strchr(in, '$'))) {
	strncat(res_value, in, src - in);
	src++;
	dst = name;
	while (isalnum(src) \|\| src == '_')
	dst++ = src++;
	*dst = 0;
	sym = sym_lookup(name, 0);
	sym_calc_value(sym);
	strcat(res_value, sym_get_string_value(sym));
	in = src;
	}
	strcat(res_value, in);

	return res_value;
	}

	char *conf_get_default_confname(void)
	{
	struct stat buf;
	static char fullname[PATH_MAX+1];
	char env, name;

	name = conf_expand_value(conf_defname);
	env = getenv(SRCTREE);
	if (env) {
	sprintf(fullname, "%s/%s", env, name);
	if (!stat(fullname, &buf))
	return fullname;
	}
	return name;
	}

	int conf_read(const char *name)
	{
	FILE *in = NULL;
	char line[1024];
	char p, p2;
	int lineno = 0;
	struct symbol *sym;
	struct property *prop;
	struct expr *e;
	int i;

	if (name) {
	in = zconf_fopen(name);
	} else {
	const char **names = conf_confnames;
	while ((name = *names++)) {
	name = conf_expand_value(name);
	in = zconf_fopen(name);
	if (in) {
	printf("#\n"
	"# using defaults found in %s\n"
	"#\n", name);
	break;
	}
	}
	}

	if (!in)
	return 1;

	for_all_symbols(i, sym) {
	sym->flags \|= SYMBOL_NEW \| SYMBOL_CHANGED;
	sym->flags &= ~SYMBOL_VALID;
	switch (sym->type) {
	case S_INT:
	case S_HEX:
	case S_STRING:
	if (sym->user.val)
	free(sym->user.val);
	default:
	sym->user.val = NULL;
	sym->user.tri = no;
	}
	}

	while (fgets(line, sizeof(line), in)) {
	lineno++;
	sym = NULL;
	switch (line[0]) {
	case '#':
	if (line[1]!=' ')
	continue;
	p = strchr(line + 2, ' ');
	if (!p)
	continue;
	*p++ = 0;
	if (strncmp(p, "is not set", 10))
	continue;
	sym = sym_find(line + 2);
	if (!sym) {
	fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line + 2);
	break;
	}
	switch (sym->type) {
	case S_BOOLEAN:
	case S_TRISTATE:
	sym->user.tri = no;
	sym->flags &= ~SYMBOL_NEW;
	break;
	default:
	;
	}
	break;

	case 'A' ... 'Z':
	p = strchr(line, '=');
	if (!p)
	continue;
	*p++ = 0;
	p2 = strchr(p, '\n');
	if (p2)
	*p2 = 0;
	sym = sym_find(line);
	if (!sym) {
	fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line);
	break;
	}
	switch (sym->type) {
	case S_TRISTATE:
	if (p[0] == 'm') {
	sym->user.tri = mod;
	sym->flags &= ~SYMBOL_NEW;
	break;
	}
	case S_BOOLEAN:
	if (p[0] == 'y') {
	sym->user.tri = yes;
	sym->flags &= ~SYMBOL_NEW;
	break;
	}
	if (p[0] == 'n') {
	sym->user.tri = no;
	sym->flags &= ~SYMBOL_NEW;
	break;
	}
	break;
	case S_STRING:
	if (*p++ != '"')
	break;
	for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
	if (*p2 == '"') {
	*p2 = 0;
	break;
	}
	memmove(p2, p2 + 1, strlen(p2));
	}
	if (!p2) {
	fprintf(stderr, "%s:%d: invalid string found\n", name, lineno);
	exit(1);
	}
	case S_INT:
	case S_HEX:
	if (sym_string_valid(sym, p)) {
	sym->user.val = strdup(p);
	sym->flags &= ~SYMBOL_NEW;
	} else {
	fprintf(stderr, "%s:%d: symbol value '%s' invalid for %s\n", name, lineno, p, sym->name);
	exit(1);
	}
	break;
	default:
	;
	}
	break;
	case '\n':
	break;
	default:
	continue;
	}
	if (sym && sym_is_choice_value(sym)) {
	struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
	switch (sym->user.tri) {
	case no:
	break;
	case mod:
	if (cs->user.tri == yes)
	/* warn? */;
	break;
	case yes:
	if (cs->user.tri != no)
	/* warn? */;
	cs->user.val = sym;
	break;
	}
	cs->user.tri = E_OR(cs->user.tri, sym->user.tri);
	cs->flags &= ~SYMBOL_NEW;
	}
	}
	fclose(in);

	if (modules_sym)
	sym_calc_value(modules_sym);
	for_all_symbols(i, sym) {
	sym_calc_value(sym);
	if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
	if (sym->visible == no)
	sym->flags \|= SYMBOL_NEW;
	switch (sym->type) {
	case S_STRING:
	case S_INT:
	case S_HEX:
	if (!sym_string_within_range(sym, sym->user.val))
	sym->flags \|= SYMBOL_NEW;
	default:
	break;
	}
	}
	if (!sym_is_choice(sym))
	continue;
	prop = sym_get_choice_prop(sym);
	for (e = prop->expr; e; e = e->left.expr)
	if (e->right.sym->visible != no)
	sym->flags \|= e->right.sym->flags & SYMBOL_NEW;
	}

	sym_change_count = 1;

	return 0;
	}

	struct menu next_menu(struct menu menu)
	{
	if (menu->list) return menu->list;
	do {
	if (menu->next) {
	menu = menu->next;
	break;
	}
	} while ((menu = menu->parent));

	return menu;
	}

	#define SYMBOL_FORCEWRITE (1<<31)

	int conf_write(const char *name)
	{
	FILE out, out_h;
	struct symbol *sym;
	struct menu *menu;
	const char *basename;
	char dirname[128], tmpname[128], newname[128];
	int type, l;
	const char *str;
	const char *opt_name;

	dirname[0] = 0;
	if (name && name[0]) {
	struct stat st;
	char *slash;

	if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
	strcpy(dirname, name);
	strcat(dirname, "/");
	basename = conf_def_filename;
	} else if ((slash = strrchr(name, '/'))) {
	int size = slash - name + 1;
	memcpy(dirname, name, size);
	dirname[size] = 0;
	if (slash[1])
	basename = slash + 1;
	else
	basename = conf_def_filename;
	} else
	basename = name;
	} else
	basename = conf_def_filename;

	sprintf(newname, "%s.tmpconfig.%d", dirname, (int)getpid());
	out = fopen(newname, "w");
	if (!out)
	return 1;
	out_h = NULL;
	if (!name) {
	out_h = fopen(".tmpconfig.h", "w");
	if (!out_h)
	return 1;
	}
	fprintf(out, "#\n"
	"# Automatically generated make config: don't edit\n"
	"#\n");
	if (out_h) {
	fprintf(out_h, "#ifndef BB_CONFIG_H\n#define BB_CONFIG_H\n");
	fprintf(out_h, "/*\n"
	" * Automatically generated header file: don't edit\n"
	" */\n\n"
	"/* Version Number */\n"
	"#define BB_VER \"%s\"\n"
	"#define BB_BT \"%s\"\n",
	getenv("VERSION"),
	getenv("BUILDTIME"));
	if (getenv("EXTRA_VERSION"))
	fprintf(out_h, "#define BB_EXTRA_VERSION \"%s\"\n",
	getenv("EXTRA_VERSION"));
	fprintf(out_h, "\n");
	}

	if (!sym_change_count)
	sym_clear_all_valid();

	/* Force write of all non-duplicate symbols. */

	/* Write out everything by default. */
	for(menu = rootmenu.list; menu; menu = next_menu(menu))
	if (menu->sym) menu->sym->flags \|= SYMBOL_FORCEWRITE;

	menu = rootmenu.list;
	while (menu) {
	sym = menu->sym;
	if (!sym) {
	if (!menu_is_visible(menu))
	goto next;
	str = menu_get_prompt(menu);
	fprintf(out, "\n"
	"#\n"
	"# %s\n"
	"#\n", str);
	if (out_h)
	fprintf(out_h, "\n"
	"/*\n"
	" * %s\n"
	" */\n", str);
	} else if (!(sym->flags & SYMBOL_CHOICE)) {
	sym_calc_value(sym);
	if (!(sym->flags & SYMBOL_FORCEWRITE))
	goto next;

	sym->flags &= ~SYMBOL_FORCEWRITE;
	type = sym->type;
	if (type == S_TRISTATE) {
	sym_calc_value(modules_sym);
	if (modules_sym->curr.tri == no)
	type = S_BOOLEAN;
	}
	opt_name = strchr(sym->name, '_');
	if(opt_name == NULL)
	opt_name = sym->name;
	else
	opt_name++;
	switch (type) {
	case S_BOOLEAN:
	case S_TRISTATE:
	switch (sym_get_tristate_value(sym)) {
	case no:
	fprintf(out, "# %s is not set\n", sym->name);
	if (out_h) {
	fprintf(out_h, "#undef %s\n", sym->name);
	fprintf(out_h, "#define ENABLE_%s 0\n", opt_name);
	fprintf(out_h, "#define USE_%s(...)\n", opt_name);
	fprintf(out_h, "#define UNUSE_%s(...) __VA_ARGS__\n", opt_name);
	}
	break;
	case mod:
	#if 0
	fprintf(out, "%s=m\n", sym->name);
	if (out_h)
	fprintf(out_h, "#define %s_MODULE 1\n", sym->name);
	#endif
	break;
	case yes:
	fprintf(out, "%s=y\n", sym->name);
	if (out_h) {
	fprintf(out_h, "#define %s 1\n", sym->name);
	fprintf(out_h, "#define ENABLE_%s 1\n", opt_name);
	fprintf(out_h, "#define USE_%s(...) __VA_ARGS__\n", opt_name);
	fprintf(out_h, "#define UNUSE_%s(...)\n", opt_name);
	}
	break;
	}
	break;
	case S_STRING:
	// fix me
	str = sym_get_string_value(sym);
	fprintf(out, "%s=\"", sym->name);
	if (out_h)
	fprintf(out_h, "#define %s \"", sym->name);
	do {
	l = strcspn(str, "\"\\");
	if (l) {
	fwrite(str, l, 1, out);
	if (out_h)
	fwrite(str, l, 1, out_h);
	}
	str += l;
	while (str == '\\' \|\| str == '"') {
	fprintf(out, "\\%c", *str);
	if (out_h)
	fprintf(out_h, "\\%c", *str);
	str++;
	}
	} while (*str);
	fputs("\"\n", out);
	if (out_h) {
	fputs("\"\n", out_h);
	fprintf(out_h, "#define ENABLE_%s 1\n", opt_name);
	fprintf(out_h, "#define USE_%s(...) __VA_ARGS__\n", opt_name);
	fprintf(out_h, "#define UNUSE_%s(...)\n", opt_name);
	}
	break;
	case S_HEX:
	str = sym_get_string_value(sym);
	if (str[0] != '0' \|\| (str[1] != 'x' && str[1] != 'X')) {
	fprintf(out, "%s=%s\n", sym->name, *str ? str : "0");
	if (out_h) {
	fprintf(out_h, "#define %s 0x%s\n", sym->name, str);
	fprintf(out_h, "#define ENABLE_%s 1\n", opt_name);
	fprintf(out_h, "#define USE_%s(...) __VA_ARGS__\n", opt_name);
	fprintf(out_h, "#define UNUSE_%s(...)\n", opt_name);
	}
	break;
	}
	case S_INT:
	str = sym_get_string_value(sym);
	fprintf(out, "%s=%s\n", sym->name, *str ? str : "0");
	if (out_h) {
	fprintf(out_h, "#define %s %s\n", sym->name, str);
	fprintf(out_h, "#define ENABLE_%s 1\n", opt_name);
	fprintf(out_h, "#define USE_%s(...) __VA_ARGS__\n", opt_name);
	fprintf(out_h, "#define UNUSE_%s(...)\n", opt_name);
	}
	break;
	}
	if (out_h)
	fprintf(out_h, "\n");
	}
	next:
	menu = next_menu(menu);
	}
	fclose(out);
	if (out_h) {
	fprintf(out_h, "#endif /* BB_CONFIG_H */\n");
	fclose(out_h);
	rename(".tmpconfig.h", "include/bb_config.h");
	file_write_dep(NULL);
	}
	if (!name \|\| basename != conf_def_filename) {
	if (!name)
	name = conf_def_filename;
	sprintf(tmpname, "%s.old", name);
	rename(name, tmpname);
	}
	sprintf(tmpname, "%s%s", dirname, basename);
	if (rename(newname, tmpname))
	return 1;

	sym_change_count = 0;

	return 0;
	}