2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
10 #include <sys/utsname.h>
14 struct symbol symbol_yes = {
17 .flags = SYMBOL_CONST|SYMBOL_VALID,
21 .flags = SYMBOL_CONST|SYMBOL_VALID,
25 .flags = SYMBOL_CONST|SYMBOL_VALID,
29 .flags = SYMBOL_VALID,
32 struct symbol *sym_defconfig_list;
33 struct symbol *modules_sym;
36 struct expr *sym_env_list;
38 static void sym_add_default(struct symbol *sym, const char *def)
40 struct property *prop = prop_alloc(P_DEFAULT, sym);
42 prop->expr = expr_alloc_symbol(sym_lookup(def, SYMBOL_CONST));
49 static bool inited = false;
57 sym = sym_lookup("UNAME_RELEASE", 0);
59 sym->flags |= SYMBOL_AUTO;
60 sym_add_default(sym, uts.release);
63 enum symbol_type sym_get_type(struct symbol *sym)
65 enum symbol_type type = sym->type;
67 if (type == S_TRISTATE) {
68 if (sym_is_choice_value(sym) && sym->visible == yes)
70 else if (modules_val == no)
76 const char *sym_type_name(enum symbol_type type)
97 struct property *sym_get_choice_prop(struct symbol *sym)
99 struct property *prop;
101 for_all_choices(sym, prop)
106 struct property *sym_get_env_prop(struct symbol *sym)
108 struct property *prop;
110 for_all_properties(sym, prop, P_ENV)
115 struct property *sym_get_default_prop(struct symbol *sym)
117 struct property *prop;
119 for_all_defaults(sym, prop) {
120 prop->visible.tri = expr_calc_value(prop->visible.expr);
121 if (prop->visible.tri != no)
127 static struct property *sym_get_range_prop(struct symbol *sym)
129 struct property *prop;
131 for_all_properties(sym, prop, P_RANGE) {
132 prop->visible.tri = expr_calc_value(prop->visible.expr);
133 if (prop->visible.tri != no)
139 static int sym_get_range_val(struct symbol *sym, int base)
152 return strtol(sym->curr.val, NULL, base);
155 static void sym_validate_range(struct symbol *sym)
157 struct property *prop;
171 prop = sym_get_range_prop(sym);
174 val = strtol(sym->curr.val, NULL, base);
175 val2 = sym_get_range_val(prop->expr->left.sym, base);
177 val2 = sym_get_range_val(prop->expr->right.sym, base);
181 if (sym->type == S_INT)
182 sprintf(str, "%d", val2);
184 sprintf(str, "0x%x", val2);
185 sym->curr.val = strdup(str);
188 static void sym_calc_visibility(struct symbol *sym)
190 struct property *prop;
193 /* any prompt visible? */
195 for_all_prompts(sym, prop) {
196 prop->visible.tri = expr_calc_value(prop->visible.expr);
197 tri = EXPR_OR(tri, prop->visible.tri);
199 if (tri == mod && (sym->type != S_TRISTATE || modules_val == no))
201 if (sym->visible != tri) {
203 sym_set_changed(sym);
205 if (sym_is_choice_value(sym))
207 /* defaulting to "yes" if no explicit "depends on" are given */
209 if (sym->dir_dep.expr)
210 tri = expr_calc_value(sym->dir_dep.expr);
213 if (sym->dir_dep.tri != tri) {
214 sym->dir_dep.tri = tri;
215 sym_set_changed(sym);
218 if (sym->rev_dep.expr)
219 tri = expr_calc_value(sym->rev_dep.expr);
220 if (tri == mod && sym_get_type(sym) == S_BOOLEAN)
222 if (sym->rev_dep.tri != tri) {
223 sym->rev_dep.tri = tri;
224 sym_set_changed(sym);
229 * Find the default symbol for a choice.
230 * First try the default values for the choice symbol
231 * Next locate the first visible choice value
232 * Return NULL if none was found
234 struct symbol *sym_choice_default(struct symbol *sym)
236 struct symbol *def_sym;
237 struct property *prop;
240 /* any of the defaults visible? */
241 for_all_defaults(sym, prop) {
242 prop->visible.tri = expr_calc_value(prop->visible.expr);
243 if (prop->visible.tri == no)
245 def_sym = prop_get_symbol(prop);
246 if (def_sym->visible != no)
250 /* just get the first visible value */
251 prop = sym_get_choice_prop(sym);
252 expr_list_for_each_sym(prop->expr, e, def_sym)
253 if (def_sym->visible != no)
256 /* failed to locate any defaults */
260 static struct symbol *sym_calc_choice(struct symbol *sym)
262 struct symbol *def_sym;
263 struct property *prop;
266 /* first calculate all choice values' visibilities */
267 prop = sym_get_choice_prop(sym);
268 expr_list_for_each_sym(prop->expr, e, def_sym)
269 sym_calc_visibility(def_sym);
271 /* is the user choice visible? */
272 def_sym = sym->def[S_DEF_USER].val;
273 if (def_sym && def_sym->visible != no)
276 def_sym = sym_choice_default(sym);
279 /* no choice? reset tristate value */
285 void sym_calc_value(struct symbol *sym)
287 struct symbol_value newval, oldval;
288 struct property *prop;
294 if (sym->flags & SYMBOL_VALID)
296 sym->flags |= SYMBOL_VALID;
304 newval = symbol_empty.curr;
308 newval = symbol_no.curr;
311 sym->curr.val = sym->name;
315 if (!sym_is_choice_value(sym))
316 sym->flags &= ~SYMBOL_WRITE;
318 sym_calc_visibility(sym);
320 /* set default if recursively called */
323 switch (sym_get_type(sym)) {
326 if (sym_is_choice_value(sym) && sym->visible == yes) {
327 prop = sym_get_choice_prop(sym);
328 newval.tri = (prop_get_symbol(prop)->curr.val == sym) ? yes : no;
330 if (sym->visible != no) {
331 /* if the symbol is visible use the user value
332 * if available, otherwise try the default value
334 sym->flags |= SYMBOL_WRITE;
335 if (sym_has_value(sym)) {
336 newval.tri = EXPR_AND(sym->def[S_DEF_USER].tri,
341 if (sym->rev_dep.tri != no)
342 sym->flags |= SYMBOL_WRITE;
343 if (!sym_is_choice(sym)) {
344 prop = sym_get_default_prop(sym);
346 sym->flags |= SYMBOL_WRITE;
347 newval.tri = EXPR_AND(expr_calc_value(prop->expr),
352 if (sym->dir_dep.tri == no && sym->rev_dep.tri != no) {
354 e = expr_simplify_unmet_dep(sym->rev_dep.expr,
356 fprintf(stderr, "warning: (");
357 expr_fprint(e, stderr);
358 fprintf(stderr, ") selects %s which has unmet direct dependencies (",
360 expr_fprint(sym->dir_dep.expr, stderr);
361 fprintf(stderr, ")\n");
364 newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri);
366 if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN)
372 if (sym->visible != no) {
373 sym->flags |= SYMBOL_WRITE;
374 if (sym_has_value(sym)) {
375 newval.val = sym->def[S_DEF_USER].val;
379 prop = sym_get_default_prop(sym);
381 struct symbol *ds = prop_get_symbol(prop);
383 sym->flags |= SYMBOL_WRITE;
385 newval.val = ds->curr.val;
394 if (sym_is_choice(sym) && newval.tri == yes)
395 sym->curr.val = sym_calc_choice(sym);
396 sym_validate_range(sym);
398 if (memcmp(&oldval, &sym->curr, sizeof(oldval))) {
399 sym_set_changed(sym);
400 if (modules_sym == sym) {
401 sym_set_all_changed();
402 modules_val = modules_sym->curr.tri;
406 if (sym_is_choice(sym)) {
407 struct symbol *choice_sym;
409 prop = sym_get_choice_prop(sym);
410 expr_list_for_each_sym(prop->expr, e, choice_sym) {
411 if ((sym->flags & SYMBOL_WRITE) &&
412 choice_sym->visible != no)
413 choice_sym->flags |= SYMBOL_WRITE;
414 if (sym->flags & SYMBOL_CHANGED)
415 sym_set_changed(choice_sym);
419 if (sym->flags & SYMBOL_AUTO)
420 sym->flags &= ~SYMBOL_WRITE;
423 void sym_clear_all_valid(void)
428 for_all_symbols(i, sym)
429 sym->flags &= ~SYMBOL_VALID;
430 sym_add_change_count(1);
432 sym_calc_value(modules_sym);
435 void sym_set_changed(struct symbol *sym)
437 struct property *prop;
439 sym->flags |= SYMBOL_CHANGED;
440 for (prop = sym->prop; prop; prop = prop->next) {
442 prop->menu->flags |= MENU_CHANGED;
446 void sym_set_all_changed(void)
451 for_all_symbols(i, sym)
452 sym_set_changed(sym);
455 bool sym_tristate_within_range(struct symbol *sym, tristate val)
457 int type = sym_get_type(sym);
459 if (sym->visible == no)
462 if (type != S_BOOLEAN && type != S_TRISTATE)
465 if (type == S_BOOLEAN && val == mod)
467 if (sym->visible <= sym->rev_dep.tri)
469 if (sym_is_choice_value(sym) && sym->visible == yes)
471 return val >= sym->rev_dep.tri && val <= sym->visible;
474 bool sym_set_tristate_value(struct symbol *sym, tristate val)
476 tristate oldval = sym_get_tristate_value(sym);
478 if (oldval != val && !sym_tristate_within_range(sym, val))
481 if (!(sym->flags & SYMBOL_DEF_USER)) {
482 sym->flags |= SYMBOL_DEF_USER;
483 sym_set_changed(sym);
486 * setting a choice value also resets the new flag of the choice
487 * symbol and all other choice values.
489 if (sym_is_choice_value(sym) && val == yes) {
490 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
491 struct property *prop;
494 cs->def[S_DEF_USER].val = sym;
495 cs->flags |= SYMBOL_DEF_USER;
496 prop = sym_get_choice_prop(cs);
497 for (e = prop->expr; e; e = e->left.expr) {
498 if (e->right.sym->visible != no)
499 e->right.sym->flags |= SYMBOL_DEF_USER;
503 sym->def[S_DEF_USER].tri = val;
505 sym_clear_all_valid();
510 tristate sym_toggle_tristate_value(struct symbol *sym)
512 tristate oldval, newval;
514 oldval = newval = sym_get_tristate_value(sym);
527 if (sym_set_tristate_value(sym, newval))
529 } while (oldval != newval);
533 bool sym_string_valid(struct symbol *sym, const char *str)
546 if (ch == '0' && *str != 0)
548 while ((ch = *str++)) {
554 if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
560 } while ((ch = *str++));
576 bool sym_string_within_range(struct symbol *sym, const char *str)
578 struct property *prop;
583 return sym_string_valid(sym, str);
585 if (!sym_string_valid(sym, str))
587 prop = sym_get_range_prop(sym);
590 val = strtol(str, NULL, 10);
591 return val >= sym_get_range_val(prop->expr->left.sym, 10) &&
592 val <= sym_get_range_val(prop->expr->right.sym, 10);
594 if (!sym_string_valid(sym, str))
596 prop = sym_get_range_prop(sym);
599 val = strtol(str, NULL, 16);
600 return val >= sym_get_range_val(prop->expr->left.sym, 16) &&
601 val <= sym_get_range_val(prop->expr->right.sym, 16);
606 return sym_tristate_within_range(sym, yes);
608 return sym_tristate_within_range(sym, mod);
610 return sym_tristate_within_range(sym, no);
618 bool sym_set_string_value(struct symbol *sym, const char *newval)
629 return sym_set_tristate_value(sym, yes);
631 return sym_set_tristate_value(sym, mod);
633 return sym_set_tristate_value(sym, no);
640 if (!sym_string_within_range(sym, newval))
643 if (!(sym->flags & SYMBOL_DEF_USER)) {
644 sym->flags |= SYMBOL_DEF_USER;
645 sym_set_changed(sym);
648 oldval = sym->def[S_DEF_USER].val;
649 size = strlen(newval) + 1;
650 if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) {
652 sym->def[S_DEF_USER].val = val = malloc(size);
655 } else if (!oldval || strcmp(oldval, newval))
656 sym->def[S_DEF_USER].val = val = malloc(size);
661 free((void *)oldval);
662 sym_clear_all_valid();
668 * Find the default value associated to a symbol.
669 * For tristate symbol handle the modules=n case
670 * in which case "m" becomes "y".
671 * If the symbol does not have any default then fallback
672 * to the fixed default values.
674 const char *sym_get_string_default(struct symbol *sym)
676 struct property *prop;
681 sym_calc_visibility(sym);
682 sym_calc_value(modules_sym);
683 val = symbol_no.curr.tri;
684 str = symbol_empty.curr.val;
686 /* If symbol has a default value look it up */
687 prop = sym_get_default_prop(sym);
692 /* The visibility may limit the value from yes => mod */
693 val = EXPR_AND(expr_calc_value(prop->expr), prop->visible.tri);
697 * The following fails to handle the situation
698 * where a default value is further limited by
701 ds = prop_get_symbol(prop);
704 str = (const char *)ds->curr.val;
709 /* Handle select statements */
710 val = EXPR_OR(val, sym->rev_dep.tri);
712 /* transpose mod to yes if modules are not enabled */
714 if (!sym_is_choice_value(sym) && modules_sym->curr.tri == no)
717 /* transpose mod to yes if type is bool */
718 if (sym->type == S_BOOLEAN && val == mod)
726 case mod: return "m";
727 case yes: return "y";
741 const char *sym_get_string_value(struct symbol *sym)
748 val = sym_get_tristate_value(sym);
753 sym_calc_value(modules_sym);
754 return (modules_sym->curr.tri == no) ? "n" : "m";
762 return (const char *)sym->curr.val;
765 bool sym_is_changable(struct symbol *sym)
767 return sym->visible > sym->rev_dep.tri;
770 static unsigned strhash(const char *s)
773 unsigned hash = 2166136261U;
775 hash = (hash ^ *s) * 0x01000193;
779 struct symbol *sym_lookup(const char *name, int flags)
781 struct symbol *symbol;
786 if (name[0] && !name[1]) {
788 case 'y': return &symbol_yes;
789 case 'm': return &symbol_mod;
790 case 'n': return &symbol_no;
793 hash = strhash(name) % SYMBOL_HASHSIZE;
795 for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
797 !strcmp(symbol->name, name) &&
798 (flags ? symbol->flags & flags
799 : !(symbol->flags & (SYMBOL_CONST|SYMBOL_CHOICE))))
802 new_name = strdup(name);
808 symbol = malloc(sizeof(*symbol));
809 memset(symbol, 0, sizeof(*symbol));
810 symbol->name = new_name;
811 symbol->type = S_UNKNOWN;
812 symbol->flags |= flags;
814 symbol->next = symbol_hash[hash];
815 symbol_hash[hash] = symbol;
820 struct symbol *sym_find(const char *name)
822 struct symbol *symbol = NULL;
828 if (name[0] && !name[1]) {
830 case 'y': return &symbol_yes;
831 case 'm': return &symbol_mod;
832 case 'n': return &symbol_no;
835 hash = strhash(name) % SYMBOL_HASHSIZE;
837 for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
839 !strcmp(symbol->name, name) &&
840 !(symbol->flags & SYMBOL_CONST))
848 * Expand symbol's names embedded in the string given in argument. Symbols'
849 * name to be expanded shall be prefixed by a '$'. Unknown symbol expands to
852 const char *sym_expand_string_value(const char *in)
858 reslen = strlen(in) + 1;
859 res = malloc(reslen);
862 while ((src = strchr(in, '$'))) {
863 char *p, name[SYMBOL_MAXLENGTH];
864 const char *symval = "";
868 strncat(res, in, src - in);
872 while (isalnum(*src) || *src == '_')
876 sym = sym_find(name);
879 symval = sym_get_string_value(sym);
882 newlen = strlen(res) + strlen(symval) + strlen(src) + 1;
883 if (newlen > reslen) {
885 res = realloc(res, reslen);
896 const char *sym_escape_string_value(const char *in)
903 reslen = strlen(in) + strlen("\"\"") + 1;
907 l = strcspn(p, "\"\\");
917 res = malloc(reslen);
924 l = strcspn(p, "\"\\");
932 strncat(res, p++, 1);
939 struct symbol **sym_re_search(const char *pattern)
941 struct symbol *sym, **sym_arr = NULL;
947 if (strlen(pattern) == 0)
949 if (regcomp(&re, pattern, REG_EXTENDED|REG_NOSUB|REG_ICASE))
952 for_all_symbols(i, sym) {
953 if (sym->flags & SYMBOL_CONST || !sym->name)
955 if (regexec(&re, sym->name, 0, NULL, 0))
957 if (cnt + 1 >= size) {
960 sym_arr = realloc(sym_arr, size * sizeof(struct symbol *));
967 sym_arr[cnt++] = sym;
977 * When we check for recursive dependencies we use a stack to save
978 * current state so we can print out relevant info to user.
979 * The entries are located on the call stack so no need to free memory.
980 * Note inser() remove() must always match to properly clear the stack.
982 static struct dep_stack {
983 struct dep_stack *prev, *next;
985 struct property *prop;
989 static void dep_stack_insert(struct dep_stack *stack, struct symbol *sym)
991 memset(stack, 0, sizeof(*stack));
993 check_top->next = stack;
994 stack->prev = check_top;
999 static void dep_stack_remove(void)
1001 check_top = check_top->prev;
1003 check_top->next = NULL;
1007 * Called when we have detected a recursive dependency.
1008 * check_top point to the top of the stact so we use
1009 * the ->prev pointer to locate the bottom of the stack.
1011 static void sym_check_print_recursive(struct symbol *last_sym)
1013 struct dep_stack *stack;
1014 struct symbol *sym, *next_sym;
1015 struct menu *menu = NULL;
1016 struct property *prop;
1017 struct dep_stack cv_stack;
1019 if (sym_is_choice_value(last_sym)) {
1020 dep_stack_insert(&cv_stack, last_sym);
1021 last_sym = prop_get_symbol(sym_get_choice_prop(last_sym));
1024 for (stack = check_top; stack != NULL; stack = stack->prev)
1025 if (stack->sym == last_sym)
1028 fprintf(stderr, "unexpected recursive dependency error\n");
1032 for (; stack; stack = stack->next) {
1034 next_sym = stack->next ? stack->next->sym : last_sym;
1037 prop = stack->sym->prop;
1039 /* for choice values find the menu entry (used below) */
1040 if (sym_is_choice(sym) || sym_is_choice_value(sym)) {
1041 for (prop = sym->prop; prop; prop = prop->next) {
1047 if (stack->sym == last_sym)
1048 fprintf(stderr, "%s:%d:error: recursive dependency detected!\n",
1049 prop->file->name, prop->lineno);
1051 fprintf(stderr, "%s:%d:\tsymbol %s %s value contains %s\n",
1052 prop->file->name, prop->lineno,
1053 sym->name ? sym->name : "<choice>",
1054 prop_get_type_name(prop->type),
1055 next_sym->name ? next_sym->name : "<choice>");
1056 } else if (stack->prop) {
1057 fprintf(stderr, "%s:%d:\tsymbol %s depends on %s\n",
1058 prop->file->name, prop->lineno,
1059 sym->name ? sym->name : "<choice>",
1060 next_sym->name ? next_sym->name : "<choice>");
1061 } else if (sym_is_choice(sym)) {
1062 fprintf(stderr, "%s:%d:\tchoice %s contains symbol %s\n",
1063 menu->file->name, menu->lineno,
1064 sym->name ? sym->name : "<choice>",
1065 next_sym->name ? next_sym->name : "<choice>");
1066 } else if (sym_is_choice_value(sym)) {
1067 fprintf(stderr, "%s:%d:\tsymbol %s is part of choice %s\n",
1068 menu->file->name, menu->lineno,
1069 sym->name ? sym->name : "<choice>",
1070 next_sym->name ? next_sym->name : "<choice>");
1072 fprintf(stderr, "%s:%d:\tsymbol %s is selected by %s\n",
1073 prop->file->name, prop->lineno,
1074 sym->name ? sym->name : "<choice>",
1075 next_sym->name ? next_sym->name : "<choice>");
1079 if (check_top == &cv_stack)
1083 static struct symbol *sym_check_expr_deps(struct expr *e)
1092 sym = sym_check_expr_deps(e->left.expr);
1095 return sym_check_expr_deps(e->right.expr);
1097 return sym_check_expr_deps(e->left.expr);
1100 sym = sym_check_deps(e->left.sym);
1103 return sym_check_deps(e->right.sym);
1105 return sym_check_deps(e->left.sym);
1109 printf("Oops! How to check %d?\n", e->type);
1113 /* return NULL when dependencies are OK */
1114 static struct symbol *sym_check_sym_deps(struct symbol *sym)
1116 struct symbol *sym2;
1117 struct property *prop;
1118 struct dep_stack stack;
1120 dep_stack_insert(&stack, sym);
1122 sym2 = sym_check_expr_deps(sym->rev_dep.expr);
1126 for (prop = sym->prop; prop; prop = prop->next) {
1127 if (prop->type == P_CHOICE || prop->type == P_SELECT)
1130 sym2 = sym_check_expr_deps(prop->visible.expr);
1133 if (prop->type != P_DEFAULT || sym_is_choice(sym))
1135 stack.expr = prop->expr;
1136 sym2 = sym_check_expr_deps(prop->expr);
1148 static struct symbol *sym_check_choice_deps(struct symbol *choice)
1150 struct symbol *sym, *sym2;
1151 struct property *prop;
1153 struct dep_stack stack;
1155 dep_stack_insert(&stack, choice);
1157 prop = sym_get_choice_prop(choice);
1158 expr_list_for_each_sym(prop->expr, e, sym)
1159 sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
1161 choice->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
1162 sym2 = sym_check_sym_deps(choice);
1163 choice->flags &= ~SYMBOL_CHECK;
1167 expr_list_for_each_sym(prop->expr, e, sym) {
1168 sym2 = sym_check_sym_deps(sym);
1173 expr_list_for_each_sym(prop->expr, e, sym)
1174 sym->flags &= ~SYMBOL_CHECK;
1176 if (sym2 && sym_is_choice_value(sym2) &&
1177 prop_get_symbol(sym_get_choice_prop(sym2)) == choice)
1185 struct symbol *sym_check_deps(struct symbol *sym)
1187 struct symbol *sym2;
1188 struct property *prop;
1190 if (sym->flags & SYMBOL_CHECK) {
1191 sym_check_print_recursive(sym);
1194 if (sym->flags & SYMBOL_CHECKED)
1197 if (sym_is_choice_value(sym)) {
1198 struct dep_stack stack;
1200 /* for choice groups start the check with main choice symbol */
1201 dep_stack_insert(&stack, sym);
1202 prop = sym_get_choice_prop(sym);
1203 sym2 = sym_check_deps(prop_get_symbol(prop));
1205 } else if (sym_is_choice(sym)) {
1206 sym2 = sym_check_choice_deps(sym);
1208 sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
1209 sym2 = sym_check_sym_deps(sym);
1210 sym->flags &= ~SYMBOL_CHECK;
1213 if (sym2 && sym2 == sym)
1219 struct property *prop_alloc(enum prop_type type, struct symbol *sym)
1221 struct property *prop;
1222 struct property **propp;
1224 prop = malloc(sizeof(*prop));
1225 memset(prop, 0, sizeof(*prop));
1228 prop->file = current_file;
1229 prop->lineno = zconf_lineno();
1231 /* append property to the prop list of symbol */
1233 for (propp = &sym->prop; *propp; propp = &(*propp)->next)
1241 struct symbol *prop_get_symbol(struct property *prop)
1243 if (prop->expr && (prop->expr->type == E_SYMBOL ||
1244 prop->expr->type == E_LIST))
1245 return prop->expr->left.sym;
1249 const char *prop_get_type_name(enum prop_type type)
1276 static void prop_add_env(const char *env)
1278 struct symbol *sym, *sym2;
1279 struct property *prop;
1282 sym = current_entry->sym;
1283 sym->flags |= SYMBOL_AUTO;
1284 for_all_properties(sym, prop, P_ENV) {
1285 sym2 = prop_get_symbol(prop);
1286 if (strcmp(sym2->name, env))
1287 menu_warn(current_entry, "redefining environment symbol from %s",
1292 prop = prop_alloc(P_ENV, sym);
1293 prop->expr = expr_alloc_symbol(sym_lookup(env, SYMBOL_CONST));
1295 sym_env_list = expr_alloc_one(E_LIST, sym_env_list);
1296 sym_env_list->right.sym = sym;
1300 sym_add_default(sym, p);
1302 menu_warn(current_entry, "environment variable %s undefined", env);