1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
21 /* return true if 'path' exists, false otherwise */
22 static bool is_present(const char *path)
26 return !stat(path, &st);
29 /* return true if 'path' exists and it is a directory, false otherwise */
30 static bool is_dir(const char *path)
37 return S_ISDIR(st.st_mode);
40 /* return true if the given two files are the same, false otherwise */
41 static bool is_same(const char *file1, const char *file2)
48 fd1 = open(file1, O_RDONLY);
52 fd2 = open(file2, O_RDONLY);
56 ret = fstat(fd1, &st1);
59 ret = fstat(fd2, &st2);
63 if (st1.st_size != st2.st_size)
66 map1 = mmap(NULL, st1.st_size, PROT_READ, MAP_PRIVATE, fd1, 0);
67 if (map1 == MAP_FAILED)
70 map2 = mmap(NULL, st2.st_size, PROT_READ, MAP_PRIVATE, fd2, 0);
71 if (map2 == MAP_FAILED)
74 if (bcmp(map1, map2, st1.st_size))
87 * Create the parent directory of the given path.
89 * For example, if 'include/config/auto.conf' is given, create 'include/config'.
91 static int make_parent_dir(const char *path)
93 char tmp[PATH_MAX + 1];
96 strncpy(tmp, path, sizeof(tmp));
97 tmp[sizeof(tmp) - 1] = 0;
99 /* Remove the base name. Just return if nothing is left */
100 p = strrchr(tmp, '/');
105 /* Just in case it is an absolute path */
110 while ((p = strchr(p, '/'))) {
113 /* skip if the directory exists */
114 if (!is_dir(tmp) && mkdir(tmp, 0755))
125 static char depfile_path[PATH_MAX];
126 static size_t depfile_prefix_len;
128 /* touch depfile for symbol 'name' */
129 static int conf_touch_dep(const char *name)
135 /* check overflow: prefix + name + ".h" + '\0' must fit in buffer. */
136 if (depfile_prefix_len + strlen(name) + 3 > sizeof(depfile_path))
139 d = depfile_path + depfile_prefix_len;
143 *d++ = (c == '_') ? '/' : tolower(c);
146 /* Assume directory path already exists. */
147 fd = open(depfile_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
152 ret = make_parent_dir(depfile_path);
157 fd = open(depfile_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
166 struct conf_printer {
167 void (*print_symbol)(FILE *, struct symbol *, const char *, void *);
168 void (*print_comment)(FILE *, const char *, void *);
171 static void conf_warning(const char *fmt, ...)
172 __attribute__ ((format (printf, 1, 2)));
174 static void conf_message(const char *fmt, ...)
175 __attribute__ ((format (printf, 1, 2)));
177 static const char *conf_filename;
178 static int conf_lineno, conf_warnings;
180 static void conf_warning(const char *fmt, ...)
184 fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
185 vfprintf(stderr, fmt, ap);
186 fprintf(stderr, "\n");
191 static void conf_default_message_callback(const char *s)
198 static void (*conf_message_callback)(const char *s) =
199 conf_default_message_callback;
200 void conf_set_message_callback(void (*fn)(const char *s))
202 conf_message_callback = fn;
205 static void conf_message(const char *fmt, ...)
210 if (!conf_message_callback)
215 vsnprintf(buf, sizeof(buf), fmt, ap);
216 conf_message_callback(buf);
220 const char *conf_get_configname(void)
222 char *name = getenv("KCONFIG_CONFIG");
224 return name ? name : ".config";
227 static const char *conf_get_autoconfig_name(void)
229 char *name = getenv("KCONFIG_AUTOCONFIG");
231 return name ? name : "include/config/auto.conf";
234 static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
241 sym->def[def].tri = mod;
242 sym->flags |= def_flags;
248 sym->def[def].tri = yes;
249 sym->flags |= def_flags;
253 sym->def[def].tri = no;
254 sym->flags |= def_flags;
257 if (def != S_DEF_AUTO)
258 conf_warning("symbol value '%s' invalid for %s",
264 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
269 memmove(p2, p2 + 1, strlen(p2));
272 if (def != S_DEF_AUTO)
273 conf_warning("invalid string found");
279 if (sym_string_valid(sym, p)) {
280 sym->def[def].val = xstrdup(p);
281 sym->flags |= def_flags;
283 if (def != S_DEF_AUTO)
284 conf_warning("symbol value '%s' invalid for %s",
295 #define LINE_GROWTH 16
296 static int add_byte(int c, char **lineptr, size_t slen, size_t *n)
299 size_t new_size = slen + 1;
301 new_size += LINE_GROWTH - 1;
303 nline = xrealloc(*lineptr, new_size);
311 (*lineptr)[slen] = c;
316 static ssize_t compat_getline(char **lineptr, size_t *n, FILE *stream)
318 char *line = *lineptr;
322 int c = getc(stream);
326 if (add_byte(c, &line, slen, n) < 0)
331 if (add_byte('\0', &line, slen, n) < 0)
338 if (add_byte(c, &line, slen, n) < 0)
350 int conf_read_simple(const char *name, int def)
354 size_t line_asize = 0;
360 in = zconf_fopen(name);
362 struct property *prop;
364 name = conf_get_configname();
365 in = zconf_fopen(name);
368 sym_add_change_count(1);
369 if (!sym_defconfig_list)
372 for_all_defaults(sym_defconfig_list, prop) {
373 if (expr_calc_value(prop->visible.expr) == no ||
374 prop->expr->type != E_SYMBOL)
376 sym_calc_value(prop->expr->left.sym);
377 name = sym_get_string_value(prop->expr->left.sym);
378 in = zconf_fopen(name);
380 conf_message("using defaults found in %s",
390 conf_filename = name;
394 def_flags = SYMBOL_DEF << def;
395 for_all_symbols(i, sym) {
396 sym->flags |= SYMBOL_CHANGED;
397 sym->flags &= ~(def_flags|SYMBOL_VALID);
398 if (sym_is_choice(sym))
399 sym->flags |= def_flags;
404 if (sym->def[def].val)
405 free(sym->def[def].val);
408 sym->def[def].val = NULL;
409 sym->def[def].tri = no;
413 while (compat_getline(&line, &line_asize, in) != -1) {
416 if (line[0] == '#') {
417 if (memcmp(line + 2, CONFIG_, strlen(CONFIG_)))
419 p = strchr(line + 2 + strlen(CONFIG_), ' ');
423 if (strncmp(p, "is not set", 10))
425 if (def == S_DEF_USER) {
426 sym = sym_find(line + 2 + strlen(CONFIG_));
428 sym_add_change_count(1);
432 sym = sym_lookup(line + 2 + strlen(CONFIG_), 0);
433 if (sym->type == S_UNKNOWN)
434 sym->type = S_BOOLEAN;
436 if (sym->flags & def_flags) {
437 conf_warning("override: reassigning to symbol %s", sym->name);
442 sym->def[def].tri = no;
443 sym->flags |= def_flags;
448 } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) {
449 p = strchr(line + strlen(CONFIG_), '=');
453 p2 = strchr(p, '\n');
460 sym = sym_find(line + strlen(CONFIG_));
462 if (def == S_DEF_AUTO)
464 * Reading from include/config/auto.conf
465 * If CONFIG_FOO previously existed in
466 * auto.conf but it is missing now,
467 * include/config/foo.h must be touched.
469 conf_touch_dep(line + strlen(CONFIG_));
471 sym_add_change_count(1);
475 if (sym->flags & def_flags) {
476 conf_warning("override: reassigning to symbol %s", sym->name);
478 if (conf_set_sym_val(sym, def, def_flags, p))
481 if (line[0] != '\r' && line[0] != '\n')
482 conf_warning("unexpected data: %.*s",
483 (int)strcspn(line, "\r\n"), line);
488 if (sym && sym_is_choice_value(sym)) {
489 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
490 switch (sym->def[def].tri) {
494 if (cs->def[def].tri == yes) {
495 conf_warning("%s creates inconsistent choice state", sym->name);
496 cs->flags &= ~def_flags;
500 if (cs->def[def].tri != no)
501 conf_warning("override: %s changes choice state", sym->name);
502 cs->def[def].val = sym;
505 cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
513 int conf_read(const char *name)
516 int conf_unsaved = 0;
519 sym_set_change_count(0);
521 if (conf_read_simple(name, S_DEF_USER)) {
522 sym_calc_value(modules_sym);
526 sym_calc_value(modules_sym);
528 for_all_symbols(i, sym) {
530 if (sym_is_choice(sym) || (sym->flags & SYMBOL_NO_WRITE))
532 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
533 /* check that calculated value agrees with saved value */
537 if (sym->def[S_DEF_USER].tri == sym_get_tristate_value(sym))
541 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
545 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
546 /* no previous value and not saved */
549 /* maybe print value in verbose mode... */
552 for_all_symbols(i, sym) {
553 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
554 /* Reset values of generates values, so they'll appear
555 * as new, if they should become visible, but that
556 * doesn't quite work if the Kconfig and the saved
557 * configuration disagree.
559 if (sym->visible == no && !conf_unsaved)
560 sym->flags &= ~SYMBOL_DEF_USER;
565 /* Reset a string value if it's out of range */
566 if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
568 sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
577 sym_add_change_count(conf_warnings || conf_unsaved);
583 * Kconfig configuration printer
585 * This printer is used when generating the resulting configuration after
586 * kconfig invocation and `defconfig' files. Unset symbol might be omitted by
587 * passing a non-NULL argument to the printer.
591 kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
598 bool skip_unset = (arg != NULL);
601 fprintf(fp, "# %s%s is not set\n",
610 fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value);
614 kconfig_print_comment(FILE *fp, const char *value, void *arg)
616 const char *p = value;
620 l = strcspn(p, "\n");
624 xfwrite(p, l, 1, fp);
633 static struct conf_printer kconfig_printer_cb =
635 .print_symbol = kconfig_print_symbol,
636 .print_comment = kconfig_print_comment,
642 * This printer is used when generating the `include/generated/autoconf.h' file.
645 header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
651 const char *suffix = "";
660 fprintf(fp, "#define %s%s%s 1\n",
661 CONFIG_, sym->name, suffix);
666 const char *prefix = "";
668 if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X'))
670 fprintf(fp, "#define %s%s %s%s\n",
671 CONFIG_, sym->name, prefix, value);
676 fprintf(fp, "#define %s%s %s\n",
677 CONFIG_, sym->name, value);
686 header_print_comment(FILE *fp, const char *value, void *arg)
688 const char *p = value;
693 l = strcspn(p, "\n");
697 xfwrite(p, l, 1, fp);
704 fprintf(fp, " */\n");
707 static struct conf_printer header_printer_cb =
709 .print_symbol = header_print_symbol,
710 .print_comment = header_print_comment,
716 * This printer is used when generating the `include/config/tristate.conf' file.
719 tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
722 if (sym->type == S_TRISTATE && *value != 'n')
723 fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value));
726 static struct conf_printer tristate_printer_cb =
728 .print_symbol = tristate_print_symbol,
729 .print_comment = kconfig_print_comment,
732 static void conf_write_symbol(FILE *fp, struct symbol *sym,
733 struct conf_printer *printer, void *printer_arg)
741 str = sym_get_string_value(sym);
742 str = sym_escape_string_value(str);
743 printer->print_symbol(fp, sym, str, printer_arg);
747 str = sym_get_string_value(sym);
748 printer->print_symbol(fp, sym, str, printer_arg);
753 conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg)
757 snprintf(buf, sizeof(buf),
759 "Automatically generated file; DO NOT EDIT.\n"
761 rootmenu.prompt->text);
763 printer->print_comment(fp, buf, printer_arg);
767 * Write out a minimal config.
768 * All values that has default values are skipped as this is redundant.
770 int conf_write_defconfig(const char *filename)
776 out = fopen(filename, "w");
780 sym_clear_all_valid();
782 /* Traverse all menus to find all relevant symbols */
783 menu = rootmenu.list;
789 if (!menu_is_visible(menu))
791 } else if (!sym_is_choice(sym)) {
793 if (!(sym->flags & SYMBOL_WRITE))
795 sym->flags &= ~SYMBOL_WRITE;
796 /* If we cannot change the symbol - skip */
797 if (!sym_is_changeable(sym))
799 /* If symbol equals to default value - skip */
800 if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
804 * If symbol is a choice value and equals to the
805 * default for a choice - skip.
806 * But only if value is bool and equal to "y" and
807 * choice is not "optional".
808 * (If choice is "optional" then all values can be "n")
810 if (sym_is_choice_value(sym)) {
814 cs = prop_get_symbol(sym_get_choice_prop(sym));
815 ds = sym_choice_default(cs);
816 if (!sym_is_optional(cs) && sym == ds) {
817 if ((sym->type == S_BOOLEAN) &&
818 sym_get_tristate_value(sym) == yes)
822 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
825 if (menu->list != NULL) {
828 else if (menu->next != NULL) {
831 while ((menu = menu->parent)) {
832 if (menu->next != NULL) {
843 int conf_write(const char *name)
849 char tmpname[PATH_MAX + 1], oldname[PATH_MAX + 1];
851 bool need_newline = false;
854 name = conf_get_configname();
857 fprintf(stderr, "config name is empty\n");
862 fprintf(stderr, "%s: Is a directory\n", name);
866 if (make_parent_dir(name))
869 env = getenv("KCONFIG_OVERWRITECONFIG");
872 out = fopen(name, "w");
874 snprintf(tmpname, sizeof(tmpname), "%s.%d.tmp",
875 name, (int)getpid());
876 out = fopen(tmpname, "w");
881 conf_write_heading(out, &kconfig_printer_cb, NULL);
883 if (!conf_get_changed())
884 sym_clear_all_valid();
886 menu = rootmenu.list;
890 if (!menu_is_visible(menu))
892 str = menu_get_prompt(menu);
897 need_newline = false;
898 } else if (!(sym->flags & SYMBOL_CHOICE)) {
900 if (!(sym->flags & SYMBOL_WRITE))
904 need_newline = false;
906 sym->flags &= ~SYMBOL_WRITE;
907 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
917 else while ((menu = menu->parent)) {
918 if (!menu->sym && menu_is_visible(menu) &&
920 str = menu_get_prompt(menu);
921 fprintf(out, "# end of %s\n", str);
933 if (is_same(name, tmpname)) {
934 conf_message("No change to %s", name);
936 sym_set_change_count(0);
940 snprintf(oldname, sizeof(oldname), "%s.old", name);
941 rename(name, oldname);
942 if (rename(tmpname, name))
946 conf_message("configuration written to %s", name);
948 sym_set_change_count(0);
953 /* write a dependency file as used by kbuild to track dependencies */
954 static int conf_write_dep(const char *name)
959 out = fopen("..config.tmp", "w");
962 fprintf(out, "deps_config := \\\n");
963 for (file = file_list; file; file = file->next) {
965 fprintf(out, "\t%s \\\n", file->name);
967 fprintf(out, "\t%s\n", file->name);
969 fprintf(out, "\n%s: \\\n"
970 "\t$(deps_config)\n\n", conf_get_autoconfig_name());
972 env_write_dep(out, conf_get_autoconfig_name());
974 fprintf(out, "\n$(deps_config): ;\n");
977 if (make_parent_dir(name))
979 rename("..config.tmp", name);
983 static int conf_touch_deps(void)
989 strcpy(depfile_path, "include/config/");
990 depfile_prefix_len = strlen(depfile_path);
992 name = conf_get_autoconfig_name();
993 conf_read_simple(name, S_DEF_AUTO);
994 sym_calc_value(modules_sym);
996 for_all_symbols(i, sym) {
998 if ((sym->flags & SYMBOL_NO_WRITE) || !sym->name)
1000 if (sym->flags & SYMBOL_WRITE) {
1001 if (sym->flags & SYMBOL_DEF_AUTO) {
1003 * symbol has old and new value,
1004 * so compare them...
1006 switch (sym->type) {
1009 if (sym_get_tristate_value(sym) ==
1010 sym->def[S_DEF_AUTO].tri)
1016 if (!strcmp(sym_get_string_value(sym),
1017 sym->def[S_DEF_AUTO].val))
1025 * If there is no old value, only 'no' (unset)
1026 * is allowed as new value.
1028 switch (sym->type) {
1031 if (sym_get_tristate_value(sym) == no)
1038 } else if (!(sym->flags & SYMBOL_DEF_AUTO))
1039 /* There is neither an old nor a new value. */
1042 * There is an old value, but no new value ('no' (unset)
1043 * isn't saved in auto.conf, so the old value is always
1044 * different from 'no').
1047 res = conf_touch_dep(sym->name);
1055 int conf_write_autoconf(int overwrite)
1059 const char *autoconf_name = conf_get_autoconfig_name();
1060 FILE *out, *tristate, *out_h;
1063 if (!overwrite && is_present(autoconf_name))
1066 sym_clear_all_valid();
1068 conf_write_dep("include/config/auto.conf.cmd");
1070 if (conf_touch_deps())
1073 out = fopen(".tmpconfig", "w");
1077 tristate = fopen(".tmpconfig_tristate", "w");
1083 out_h = fopen(".tmpconfig.h", "w");
1090 conf_write_heading(out, &kconfig_printer_cb, NULL);
1092 conf_write_heading(tristate, &tristate_printer_cb, NULL);
1094 conf_write_heading(out_h, &header_printer_cb, NULL);
1096 for_all_symbols(i, sym) {
1097 sym_calc_value(sym);
1098 if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
1101 /* write symbol to auto.conf, tristate and header files */
1102 conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1);
1104 conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1);
1106 conf_write_symbol(out_h, sym, &header_printer_cb, NULL);
1112 name = getenv("KCONFIG_AUTOHEADER");
1114 name = "include/generated/autoconf.h";
1115 if (make_parent_dir(name))
1117 if (rename(".tmpconfig.h", name))
1120 name = getenv("KCONFIG_TRISTATE");
1122 name = "include/config/tristate.conf";
1123 if (make_parent_dir(name))
1125 if (rename(".tmpconfig_tristate", name))
1128 if (make_parent_dir(autoconf_name))
1131 * This must be the last step, kbuild has a dependency on auto.conf
1132 * and this marks the successful completion of the previous steps.
1134 if (rename(".tmpconfig", autoconf_name))
1140 static int sym_change_count;
1141 static void (*conf_changed_callback)(void);
1143 void sym_set_change_count(int count)
1145 int _sym_change_count = sym_change_count;
1146 sym_change_count = count;
1147 if (conf_changed_callback &&
1148 (bool)_sym_change_count != (bool)count)
1149 conf_changed_callback();
1152 void sym_add_change_count(int count)
1154 sym_set_change_count(count + sym_change_count);
1157 bool conf_get_changed(void)
1159 return sym_change_count;
1162 void conf_set_changed_callback(void (*fn)(void))
1164 conf_changed_callback = fn;
1167 static bool randomize_choice_values(struct symbol *csym)
1169 struct property *prop;
1175 * If choice is mod then we may have more items selected
1176 * and if no then no-one.
1177 * In both cases stop.
1179 if (csym->curr.tri != yes)
1182 prop = sym_get_choice_prop(csym);
1184 /* count entries in choice block */
1186 expr_list_for_each_sym(prop->expr, e, sym)
1190 * find a random value and set it to yes,
1191 * set the rest to no so we have only one set
1193 def = (rand() % cnt);
1196 expr_list_for_each_sym(prop->expr, e, sym) {
1198 sym->def[S_DEF_USER].tri = yes;
1199 csym->def[S_DEF_USER].val = sym;
1202 sym->def[S_DEF_USER].tri = no;
1204 sym->flags |= SYMBOL_DEF_USER;
1205 /* clear VALID to get value calculated */
1206 sym->flags &= ~SYMBOL_VALID;
1208 csym->flags |= SYMBOL_DEF_USER;
1209 /* clear VALID to get value calculated */
1210 csym->flags &= ~(SYMBOL_VALID);
1215 void set_all_choice_values(struct symbol *csym)
1217 struct property *prop;
1221 prop = sym_get_choice_prop(csym);
1224 * Set all non-assinged choice values to no
1226 expr_list_for_each_sym(prop->expr, e, sym) {
1227 if (!sym_has_value(sym))
1228 sym->def[S_DEF_USER].tri = no;
1230 csym->flags |= SYMBOL_DEF_USER;
1231 /* clear VALID to get value calculated */
1232 csym->flags &= ~(SYMBOL_VALID | SYMBOL_NEED_SET_CHOICE_VALUES);
1235 bool conf_set_all_new_symbols(enum conf_def_mode mode)
1237 struct symbol *sym, *csym;
1238 int i, cnt, pby, pty, ptm; /* pby: probability of bool = y
1239 * pty: probability of tristate = y
1240 * ptm: probability of tristate = m
1243 pby = 50; pty = ptm = 33; /* can't go as the default in switch-case
1244 * below, otherwise gcc whines about
1245 * -Wmaybe-uninitialized */
1246 if (mode == def_random) {
1248 char *env = getenv("KCONFIG_PROBABILITY");
1250 while( env && *env ) {
1252 int tmp = strtol( env, &endp, 10 );
1253 if( tmp >= 0 && tmp <= 100 ) {
1257 perror( "KCONFIG_PROBABILITY" );
1260 env = (*endp == ':') ? endp+1 : endp;
1267 pby = p[0]; ptm = pby/2; pty = pby-ptm;
1270 pty = p[0]; ptm = p[1]; pby = pty + ptm;
1273 pby = p[0]; pty = p[1]; ptm = p[2];
1277 if( pty+ptm > 100 ) {
1279 perror( "KCONFIG_PROBABILITY" );
1283 bool has_changed = false;
1285 for_all_symbols(i, sym) {
1286 if (sym_has_value(sym) || (sym->flags & SYMBOL_VALID))
1288 switch (sym_get_type(sym)) {
1294 sym->def[S_DEF_USER].tri = yes;
1297 sym->def[S_DEF_USER].tri = mod;
1300 if (sym->flags & SYMBOL_ALLNOCONFIG_Y)
1301 sym->def[S_DEF_USER].tri = yes;
1303 sym->def[S_DEF_USER].tri = no;
1306 sym->def[S_DEF_USER].tri = no;
1308 if (sym->type == S_TRISTATE) {
1310 sym->def[S_DEF_USER].tri = yes;
1311 else if (cnt < (pty+ptm))
1312 sym->def[S_DEF_USER].tri = mod;
1313 } else if (cnt < pby)
1314 sym->def[S_DEF_USER].tri = yes;
1319 if (!(sym_is_choice(sym) && mode == def_random))
1320 sym->flags |= SYMBOL_DEF_USER;
1328 sym_clear_all_valid();
1331 * We have different type of choice blocks.
1332 * If curr.tri equals to mod then we can select several
1333 * choice symbols in one block.
1334 * In this case we do nothing.
1335 * If curr.tri equals yes then only one symbol can be
1336 * selected in a choice block and we set it to yes,
1337 * and the rest to no.
1339 if (mode != def_random) {
1340 for_all_symbols(i, csym) {
1341 if ((sym_is_choice(csym) && !sym_has_value(csym)) ||
1342 sym_is_choice_value(csym))
1343 csym->flags |= SYMBOL_NEED_SET_CHOICE_VALUES;
1347 for_all_symbols(i, csym) {
1348 if (sym_has_value(csym) || !sym_is_choice(csym))
1351 sym_calc_value(csym);
1352 if (mode == def_random)
1353 has_changed = randomize_choice_values(csym);
1355 set_all_choice_values(csym);