1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> 4 */ 5 6 #include <ctype.h> 7 #include <limits.h> 8 #include <stdio.h> 9 #include <stdlib.h> 10 #include <string.h> 11 #include <time.h> 12 #include <unistd.h> 13 #include <getopt.h> 14 #include <sys/time.h> 15 #include <errno.h> 16 17 #include "internal.h" 18 #include "lkc.h" 19 20 static void conf(struct menu *menu); 21 static void check_conf(struct menu *menu); 22 23 enum input_mode { 24 oldaskconfig, 25 syncconfig, 26 oldconfig, 27 allnoconfig, 28 allyesconfig, 29 allmodconfig, 30 alldefconfig, 31 randconfig, 32 defconfig, 33 savedefconfig, 34 listnewconfig, 35 helpnewconfig, 36 olddefconfig, 37 yes2modconfig, 38 mod2yesconfig, 39 mod2noconfig, 40 }; 41 static enum input_mode input_mode = oldaskconfig; 42 static int input_mode_opt; 43 static int indent = 1; 44 static int tty_stdio; 45 static int sync_kconfig; 46 static int conf_cnt; 47 static char line[PATH_MAX]; 48 static struct menu *rootEntry; 49 50 static void print_help(struct menu *menu) 51 { 52 struct gstr help = str_new(); 53 54 menu_get_ext_help(menu, &help); 55 56 printf("\n%s\n", str_get(&help)); 57 str_free(&help); 58 } 59 60 static void strip(char *str) 61 { 62 char *p = str; 63 int l; 64 65 while ((isspace(*p))) 66 p++; 67 l = strlen(p); 68 if (p != str) 69 memmove(str, p, l + 1); 70 if (!l) 71 return; 72 p = str + l - 1; 73 while ((isspace(*p))) 74 *p-- = 0; 75 } 76 77 /* Helper function to facilitate fgets() by Jean Sacren. */ 78 static void xfgets(char *str, int size, FILE *in) 79 { 80 if (!fgets(str, size, in)) 81 fprintf(stderr, "\nError in reading or end of file.\n"); 82 83 if (!tty_stdio) 84 printf("%s", str); 85 } 86 87 static void set_randconfig_seed(void) 88 { 89 unsigned int seed; 90 char *env; 91 bool seed_set = false; 92 93 env = getenv("KCONFIG_SEED"); 94 if (env && *env) { 95 char *endp; 96 97 seed = strtol(env, &endp, 0); 98 if (*endp == '\0') 99 seed_set = true; 100 } 101 102 if (!seed_set) { 103 struct timeval now; 104 105 /* 106 * Use microseconds derived seed, compensate for systems where it may 107 * be zero. 108 */ 109 gettimeofday(&now, NULL); 110 seed = (now.tv_sec + 1) * (now.tv_usec + 1); 111 } 112 113 printf("KCONFIG_SEED=0x%X\n", seed); 114 srand(seed); 115 } 116 117 static bool randomize_choice_values(struct symbol *csym) 118 { 119 struct property *prop; 120 struct symbol *sym; 121 struct expr *e; 122 int cnt, def; 123 124 /* 125 * If choice is mod then we may have more items selected 126 * and if no then no-one. 127 * In both cases stop. 128 */ 129 if (csym->curr.tri != yes) 130 return false; 131 132 prop = sym_get_choice_prop(csym); 133 134 /* count entries in choice block */ 135 cnt = 0; 136 expr_list_for_each_sym(prop->expr, e, sym) 137 cnt++; 138 139 /* 140 * find a random value and set it to yes, 141 * set the rest to no so we have only one set 142 */ 143 def = rand() % cnt; 144 145 cnt = 0; 146 expr_list_for_each_sym(prop->expr, e, sym) { 147 if (def == cnt++) { 148 sym->def[S_DEF_USER].tri = yes; 149 csym->def[S_DEF_USER].val = sym; 150 } else { 151 sym->def[S_DEF_USER].tri = no; 152 } 153 sym->flags |= SYMBOL_DEF_USER; 154 /* clear VALID to get value calculated */ 155 sym->flags &= ~SYMBOL_VALID; 156 } 157 csym->flags |= SYMBOL_DEF_USER; 158 /* clear VALID to get value calculated */ 159 csym->flags &= ~SYMBOL_VALID; 160 161 return true; 162 } 163 164 enum conf_def_mode { 165 def_default, 166 def_yes, 167 def_mod, 168 def_no, 169 def_random 170 }; 171 172 static bool conf_set_all_new_symbols(enum conf_def_mode mode) 173 { 174 struct symbol *sym, *csym; 175 int cnt; 176 /* 177 * can't go as the default in switch-case below, otherwise gcc whines 178 * about -Wmaybe-uninitialized 179 */ 180 int pby = 50; /* probability of bool = y */ 181 int pty = 33; /* probability of tristate = y */ 182 int ptm = 33; /* probability of tristate = m */ 183 bool has_changed = false; 184 185 if (mode == def_random) { 186 int n, p[3]; 187 char *env = getenv("KCONFIG_PROBABILITY"); 188 189 n = 0; 190 while (env && *env) { 191 char *endp; 192 int tmp = strtol(env, &endp, 10); 193 194 if (tmp >= 0 && tmp <= 100) { 195 p[n++] = tmp; 196 } else { 197 errno = ERANGE; 198 perror("KCONFIG_PROBABILITY"); 199 exit(1); 200 } 201 env = (*endp == ':') ? endp + 1 : endp; 202 if (n >= 3) 203 break; 204 } 205 switch (n) { 206 case 1: 207 pby = p[0]; 208 ptm = pby / 2; 209 pty = pby - ptm; 210 break; 211 case 2: 212 pty = p[0]; 213 ptm = p[1]; 214 pby = pty + ptm; 215 break; 216 case 3: 217 pby = p[0]; 218 pty = p[1]; 219 ptm = p[2]; 220 break; 221 } 222 223 if (pty + ptm > 100) { 224 errno = ERANGE; 225 perror("KCONFIG_PROBABILITY"); 226 exit(1); 227 } 228 } 229 230 for_all_symbols(sym) { 231 if (sym_has_value(sym) || sym->flags & SYMBOL_VALID) 232 continue; 233 switch (sym_get_type(sym)) { 234 case S_BOOLEAN: 235 case S_TRISTATE: 236 has_changed = true; 237 switch (mode) { 238 case def_yes: 239 sym->def[S_DEF_USER].tri = yes; 240 break; 241 case def_mod: 242 sym->def[S_DEF_USER].tri = mod; 243 break; 244 case def_no: 245 sym->def[S_DEF_USER].tri = no; 246 break; 247 case def_random: 248 sym->def[S_DEF_USER].tri = no; 249 cnt = rand() % 100; 250 if (sym->type == S_TRISTATE) { 251 if (cnt < pty) 252 sym->def[S_DEF_USER].tri = yes; 253 else if (cnt < pty + ptm) 254 sym->def[S_DEF_USER].tri = mod; 255 } else if (cnt < pby) 256 sym->def[S_DEF_USER].tri = yes; 257 break; 258 default: 259 continue; 260 } 261 if (!(sym_is_choice(sym) && mode == def_random)) 262 sym->flags |= SYMBOL_DEF_USER; 263 break; 264 default: 265 break; 266 } 267 268 } 269 270 sym_clear_all_valid(); 271 272 /* 273 * We have different type of choice blocks. 274 * If curr.tri equals to mod then we can select several 275 * choice symbols in one block. 276 * In this case we do nothing. 277 * If curr.tri equals yes then only one symbol can be 278 * selected in a choice block and we set it to yes, 279 * and the rest to no. 280 */ 281 if (mode != def_random) { 282 for_all_symbols(csym) { 283 if ((sym_is_choice(csym) && !sym_has_value(csym)) || 284 sym_is_choice_value(csym)) 285 csym->flags |= SYMBOL_NEED_SET_CHOICE_VALUES; 286 } 287 } 288 289 for_all_symbols(csym) { 290 if (sym_has_value(csym) || !sym_is_choice(csym)) 291 continue; 292 293 sym_calc_value(csym); 294 if (mode == def_random) 295 has_changed |= randomize_choice_values(csym); 296 else { 297 set_all_choice_values(csym); 298 has_changed = true; 299 } 300 } 301 302 return has_changed; 303 } 304 305 static void conf_rewrite_tristates(tristate old_val, tristate new_val) 306 { 307 struct symbol *sym; 308 309 for_all_symbols(sym) { 310 if (sym_get_type(sym) == S_TRISTATE && 311 sym->def[S_DEF_USER].tri == old_val) 312 sym->def[S_DEF_USER].tri = new_val; 313 } 314 sym_clear_all_valid(); 315 } 316 317 static int conf_askvalue(struct symbol *sym, const char *def) 318 { 319 if (!sym_has_value(sym)) 320 printf("(NEW) "); 321 322 line[0] = '\n'; 323 line[1] = 0; 324 325 if (!sym_is_changeable(sym)) { 326 printf("%s\n", def); 327 line[0] = '\n'; 328 line[1] = 0; 329 return 0; 330 } 331 332 switch (input_mode) { 333 case oldconfig: 334 case syncconfig: 335 if (sym_has_value(sym)) { 336 printf("%s\n", def); 337 return 0; 338 } 339 /* fall through */ 340 default: 341 fflush(stdout); 342 xfgets(line, sizeof(line), stdin); 343 break; 344 } 345 346 return 1; 347 } 348 349 static int conf_string(struct menu *menu) 350 { 351 struct symbol *sym = menu->sym; 352 const char *def; 353 354 while (1) { 355 printf("%*s%s ", indent - 1, "", menu->prompt->text); 356 printf("(%s) ", sym->name); 357 def = sym_get_string_value(sym); 358 if (def) 359 printf("[%s] ", def); 360 if (!conf_askvalue(sym, def)) 361 return 0; 362 switch (line[0]) { 363 case '\n': 364 break; 365 case '?': 366 /* print help */ 367 if (line[1] == '\n') { 368 print_help(menu); 369 def = NULL; 370 break; 371 } 372 /* fall through */ 373 default: 374 line[strlen(line)-1] = 0; 375 def = line; 376 } 377 if (def && sym_set_string_value(sym, def)) 378 return 0; 379 } 380 } 381 382 static int conf_sym(struct menu *menu) 383 { 384 struct symbol *sym = menu->sym; 385 tristate oldval, newval; 386 387 while (1) { 388 printf("%*s%s ", indent - 1, "", menu->prompt->text); 389 if (sym->name) 390 printf("(%s) ", sym->name); 391 putchar('['); 392 oldval = sym_get_tristate_value(sym); 393 switch (oldval) { 394 case no: 395 putchar('N'); 396 break; 397 case mod: 398 putchar('M'); 399 break; 400 case yes: 401 putchar('Y'); 402 break; 403 } 404 if (oldval != no && sym_tristate_within_range(sym, no)) 405 printf("/n"); 406 if (oldval != mod && sym_tristate_within_range(sym, mod)) 407 printf("/m"); 408 if (oldval != yes && sym_tristate_within_range(sym, yes)) 409 printf("/y"); 410 printf("/?] "); 411 if (!conf_askvalue(sym, sym_get_string_value(sym))) 412 return 0; 413 strip(line); 414 415 switch (line[0]) { 416 case 'n': 417 case 'N': 418 newval = no; 419 if (!line[1] || !strcmp(&line[1], "o")) 420 break; 421 continue; 422 case 'm': 423 case 'M': 424 newval = mod; 425 if (!line[1]) 426 break; 427 continue; 428 case 'y': 429 case 'Y': 430 newval = yes; 431 if (!line[1] || !strcmp(&line[1], "es")) 432 break; 433 continue; 434 case 0: 435 newval = oldval; 436 break; 437 case '?': 438 goto help; 439 default: 440 continue; 441 } 442 if (sym_set_tristate_value(sym, newval)) 443 return 0; 444 help: 445 print_help(menu); 446 } 447 } 448 449 static int conf_choice(struct menu *menu) 450 { 451 struct symbol *sym, *def_sym; 452 struct menu *child; 453 bool is_new; 454 455 sym = menu->sym; 456 is_new = !sym_has_value(sym); 457 if (sym_is_changeable(sym)) { 458 conf_sym(menu); 459 sym_calc_value(sym); 460 switch (sym_get_tristate_value(sym)) { 461 case no: 462 return 1; 463 case mod: 464 return 0; 465 case yes: 466 break; 467 } 468 } else { 469 switch (sym_get_tristate_value(sym)) { 470 case no: 471 return 1; 472 case mod: 473 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu)); 474 return 0; 475 case yes: 476 break; 477 } 478 } 479 480 while (1) { 481 int cnt, def; 482 483 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu)); 484 def_sym = sym_get_choice_value(sym); 485 cnt = def = 0; 486 line[0] = 0; 487 for (child = menu->list; child; child = child->next) { 488 if (!menu_is_visible(child)) 489 continue; 490 if (!child->sym) { 491 printf("%*c %s\n", indent, '*', menu_get_prompt(child)); 492 continue; 493 } 494 cnt++; 495 if (child->sym == def_sym) { 496 def = cnt; 497 printf("%*c", indent, '>'); 498 } else 499 printf("%*c", indent, ' '); 500 printf(" %d. %s", cnt, menu_get_prompt(child)); 501 if (child->sym->name) 502 printf(" (%s)", child->sym->name); 503 if (!sym_has_value(child->sym)) 504 printf(" (NEW)"); 505 printf("\n"); 506 } 507 printf("%*schoice", indent - 1, ""); 508 if (cnt == 1) { 509 printf("[1]: 1\n"); 510 goto conf_childs; 511 } 512 printf("[1-%d?]: ", cnt); 513 switch (input_mode) { 514 case oldconfig: 515 case syncconfig: 516 if (!is_new) { 517 cnt = def; 518 printf("%d\n", cnt); 519 break; 520 } 521 /* fall through */ 522 case oldaskconfig: 523 fflush(stdout); 524 xfgets(line, sizeof(line), stdin); 525 strip(line); 526 if (line[0] == '?') { 527 print_help(menu); 528 continue; 529 } 530 if (!line[0]) 531 cnt = def; 532 else if (isdigit(line[0])) 533 cnt = atoi(line); 534 else 535 continue; 536 break; 537 default: 538 break; 539 } 540 541 conf_childs: 542 for (child = menu->list; child; child = child->next) { 543 if (!child->sym || !menu_is_visible(child)) 544 continue; 545 if (!--cnt) 546 break; 547 } 548 if (!child) 549 continue; 550 if (line[0] && line[strlen(line) - 1] == '?') { 551 print_help(child); 552 continue; 553 } 554 sym_set_tristate_value(child->sym, yes); 555 return 1; 556 } 557 } 558 559 static void conf(struct menu *menu) 560 { 561 struct symbol *sym; 562 struct property *prop; 563 struct menu *child; 564 565 if (!menu_is_visible(menu)) 566 return; 567 568 sym = menu->sym; 569 prop = menu->prompt; 570 if (prop) { 571 const char *prompt; 572 573 switch (prop->type) { 574 case P_MENU: 575 /* 576 * Except in oldaskconfig mode, we show only menus that 577 * contain new symbols. 578 */ 579 if (input_mode != oldaskconfig && rootEntry != menu) { 580 check_conf(menu); 581 return; 582 } 583 /* fall through */ 584 case P_COMMENT: 585 prompt = menu_get_prompt(menu); 586 if (prompt) 587 printf("%*c\n%*c %s\n%*c\n", 588 indent, '*', 589 indent, '*', prompt, 590 indent, '*'); 591 default: 592 ; 593 } 594 } 595 596 if (!sym) 597 goto conf_childs; 598 599 if (sym_is_choice(sym)) { 600 conf_choice(menu); 601 if (sym->curr.tri != mod) 602 return; 603 goto conf_childs; 604 } 605 606 switch (sym->type) { 607 case S_INT: 608 case S_HEX: 609 case S_STRING: 610 conf_string(menu); 611 break; 612 default: 613 conf_sym(menu); 614 break; 615 } 616 617 conf_childs: 618 if (sym) 619 indent += 2; 620 for (child = menu->list; child; child = child->next) 621 conf(child); 622 if (sym) 623 indent -= 2; 624 } 625 626 static void check_conf(struct menu *menu) 627 { 628 struct symbol *sym; 629 struct menu *child; 630 631 if (!menu_is_visible(menu)) 632 return; 633 634 sym = menu->sym; 635 if (sym && !sym_has_value(sym) && 636 (sym_is_changeable(sym) || 637 (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes))) { 638 639 switch (input_mode) { 640 case listnewconfig: 641 if (sym->name) 642 print_symbol_for_listconfig(sym); 643 break; 644 case helpnewconfig: 645 printf("-----\n"); 646 print_help(menu); 647 printf("-----\n"); 648 break; 649 default: 650 if (!conf_cnt++) 651 printf("*\n* Restart config...\n*\n"); 652 rootEntry = menu_get_parent_menu(menu); 653 conf(rootEntry); 654 break; 655 } 656 } 657 658 for (child = menu->list; child; child = child->next) 659 check_conf(child); 660 } 661 662 static const struct option long_opts[] = { 663 {"help", no_argument, NULL, 'h'}, 664 {"silent", no_argument, NULL, 's'}, 665 {"oldaskconfig", no_argument, &input_mode_opt, oldaskconfig}, 666 {"oldconfig", no_argument, &input_mode_opt, oldconfig}, 667 {"syncconfig", no_argument, &input_mode_opt, syncconfig}, 668 {"defconfig", required_argument, &input_mode_opt, defconfig}, 669 {"savedefconfig", required_argument, &input_mode_opt, savedefconfig}, 670 {"allnoconfig", no_argument, &input_mode_opt, allnoconfig}, 671 {"allyesconfig", no_argument, &input_mode_opt, allyesconfig}, 672 {"allmodconfig", no_argument, &input_mode_opt, allmodconfig}, 673 {"alldefconfig", no_argument, &input_mode_opt, alldefconfig}, 674 {"randconfig", no_argument, &input_mode_opt, randconfig}, 675 {"listnewconfig", no_argument, &input_mode_opt, listnewconfig}, 676 {"helpnewconfig", no_argument, &input_mode_opt, helpnewconfig}, 677 {"olddefconfig", no_argument, &input_mode_opt, olddefconfig}, 678 {"yes2modconfig", no_argument, &input_mode_opt, yes2modconfig}, 679 {"mod2yesconfig", no_argument, &input_mode_opt, mod2yesconfig}, 680 {"mod2noconfig", no_argument, &input_mode_opt, mod2noconfig}, 681 {NULL, 0, NULL, 0} 682 }; 683 684 static void conf_usage(const char *progname) 685 { 686 printf("Usage: %s [options] <kconfig-file>\n", progname); 687 printf("\n"); 688 printf("Generic options:\n"); 689 printf(" -h, --help Print this message and exit.\n"); 690 printf(" -s, --silent Do not print log.\n"); 691 printf("\n"); 692 printf("Mode options:\n"); 693 printf(" --listnewconfig List new options\n"); 694 printf(" --helpnewconfig List new options and help text\n"); 695 printf(" --oldaskconfig Start a new configuration using a line-oriented program\n"); 696 printf(" --oldconfig Update a configuration using a provided .config as base\n"); 697 printf(" --syncconfig Similar to oldconfig but generates configuration in\n" 698 " include/{generated/,config/}\n"); 699 printf(" --olddefconfig Same as oldconfig but sets new symbols to their default value\n"); 700 printf(" --defconfig <file> New config with default defined in <file>\n"); 701 printf(" --savedefconfig <file> Save the minimal current configuration to <file>\n"); 702 printf(" --allnoconfig New config where all options are answered with no\n"); 703 printf(" --allyesconfig New config where all options are answered with yes\n"); 704 printf(" --allmodconfig New config where all options are answered with mod\n"); 705 printf(" --alldefconfig New config with all symbols set to default\n"); 706 printf(" --randconfig New config with random answer to all options\n"); 707 printf(" --yes2modconfig Change answers from yes to mod if possible\n"); 708 printf(" --mod2yesconfig Change answers from mod to yes if possible\n"); 709 printf(" --mod2noconfig Change answers from mod to no if possible\n"); 710 printf(" (If none of the above is given, --oldaskconfig is the default)\n"); 711 } 712 713 int main(int ac, char **av) 714 { 715 const char *progname = av[0]; 716 int opt; 717 const char *name, *defconfig_file = NULL /* gcc uninit */; 718 int no_conf_write = 0; 719 720 tty_stdio = isatty(0) && isatty(1); 721 722 while ((opt = getopt_long(ac, av, "hs", long_opts, NULL)) != -1) { 723 switch (opt) { 724 case 'h': 725 conf_usage(progname); 726 exit(1); 727 break; 728 case 's': 729 conf_set_message_callback(NULL); 730 break; 731 case 0: 732 input_mode = input_mode_opt; 733 switch (input_mode) { 734 case syncconfig: 735 /* 736 * syncconfig is invoked during the build stage. 737 * Suppress distracting 738 * "configuration written to ..." 739 */ 740 conf_set_message_callback(NULL); 741 sync_kconfig = 1; 742 break; 743 case defconfig: 744 case savedefconfig: 745 defconfig_file = optarg; 746 break; 747 case randconfig: 748 set_randconfig_seed(); 749 break; 750 default: 751 break; 752 } 753 default: 754 break; 755 } 756 } 757 if (ac == optind) { 758 fprintf(stderr, "%s: Kconfig file missing\n", av[0]); 759 conf_usage(progname); 760 exit(1); 761 } 762 conf_parse(av[optind]); 763 //zconfdump(stdout); 764 765 switch (input_mode) { 766 case defconfig: 767 if (conf_read(defconfig_file)) { 768 fprintf(stderr, 769 "***\n" 770 "*** Can't find default configuration \"%s\"!\n" 771 "***\n", 772 defconfig_file); 773 exit(1); 774 } 775 break; 776 case savedefconfig: 777 case syncconfig: 778 case oldaskconfig: 779 case oldconfig: 780 case listnewconfig: 781 case helpnewconfig: 782 case olddefconfig: 783 case yes2modconfig: 784 case mod2yesconfig: 785 case mod2noconfig: 786 conf_read(NULL); 787 break; 788 case allnoconfig: 789 case allyesconfig: 790 case allmodconfig: 791 case alldefconfig: 792 case randconfig: 793 name = getenv("KCONFIG_ALLCONFIG"); 794 if (!name) 795 break; 796 if ((strcmp(name, "") != 0) && (strcmp(name, "1") != 0)) { 797 if (conf_read_simple(name, S_DEF_USER)) { 798 fprintf(stderr, 799 "*** Can't read seed configuration \"%s\"!\n", 800 name); 801 exit(1); 802 } 803 break; 804 } 805 switch (input_mode) { 806 case allnoconfig: name = "allno.config"; break; 807 case allyesconfig: name = "allyes.config"; break; 808 case allmodconfig: name = "allmod.config"; break; 809 case alldefconfig: name = "alldef.config"; break; 810 case randconfig: name = "allrandom.config"; break; 811 default: break; 812 } 813 if (conf_read_simple(name, S_DEF_USER) && 814 conf_read_simple("all.config", S_DEF_USER)) { 815 fprintf(stderr, 816 "*** KCONFIG_ALLCONFIG set, but no \"%s\" or \"all.config\" file found\n", 817 name); 818 exit(1); 819 } 820 break; 821 default: 822 break; 823 } 824 825 if (conf_errors()) 826 exit(1); 827 828 if (sync_kconfig) { 829 name = getenv("KCONFIG_NOSILENTUPDATE"); 830 if (name && *name) { 831 if (conf_get_changed()) { 832 fprintf(stderr, 833 "\n*** The configuration requires explicit update.\n\n"); 834 return 1; 835 } 836 no_conf_write = 1; 837 } 838 } 839 840 switch (input_mode) { 841 case allnoconfig: 842 conf_set_all_new_symbols(def_no); 843 break; 844 case allyesconfig: 845 conf_set_all_new_symbols(def_yes); 846 break; 847 case allmodconfig: 848 conf_set_all_new_symbols(def_mod); 849 break; 850 case alldefconfig: 851 conf_set_all_new_symbols(def_default); 852 break; 853 case randconfig: 854 /* Really nothing to do in this loop */ 855 while (conf_set_all_new_symbols(def_random)) ; 856 break; 857 case defconfig: 858 conf_set_all_new_symbols(def_default); 859 break; 860 case savedefconfig: 861 break; 862 case yes2modconfig: 863 conf_rewrite_tristates(yes, mod); 864 break; 865 case mod2yesconfig: 866 conf_rewrite_tristates(mod, yes); 867 break; 868 case mod2noconfig: 869 conf_rewrite_tristates(mod, no); 870 break; 871 case oldaskconfig: 872 rootEntry = &rootmenu; 873 conf(&rootmenu); 874 input_mode = oldconfig; 875 /* fall through */ 876 case oldconfig: 877 case listnewconfig: 878 case helpnewconfig: 879 case syncconfig: 880 /* Update until a loop caused no more changes */ 881 do { 882 conf_cnt = 0; 883 check_conf(&rootmenu); 884 } while (conf_cnt); 885 break; 886 case olddefconfig: 887 default: 888 break; 889 } 890 891 if (sym_dep_errors()) 892 exit(1); 893 894 if (input_mode == savedefconfig) { 895 if (conf_write_defconfig(defconfig_file)) { 896 fprintf(stderr, "n*** Error while saving defconfig to: %s\n\n", 897 defconfig_file); 898 return 1; 899 } 900 } else if (input_mode != listnewconfig && input_mode != helpnewconfig) { 901 if (!no_conf_write && conf_write(NULL)) { 902 fprintf(stderr, "\n*** Error during writing of the configuration.\n\n"); 903 exit(1); 904 } 905 906 /* 907 * Create auto.conf if it does not exist. 908 * This prevents GNU Make 4.1 or older from emitting 909 * "include/config/auto.conf: No such file or directory" 910 * in the top-level Makefile 911 * 912 * syncconfig always creates or updates auto.conf because it is 913 * used during the build. 914 */ 915 if (conf_write_autoconf(sync_kconfig) && sync_kconfig) { 916 fprintf(stderr, 917 "\n*** Error during sync of the configuration.\n\n"); 918 return 1; 919 } 920 } 921 return 0; 922 } 923