git.ozlabs.org Git - ccan/blob - tools/ccanlint/ccanlint.c

   1 /*
   2  * ccanlint: assorted checks and advice for a ccan package
   3  * Copyright (C) 2008 Rusty Russell, Idris Soule
   4  * Copyright (C) 2010 Rusty Russell, Idris Soule
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the Free
   8  * Software Foundation; either version 2 of the License, or (at your option)
   9  * any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program; if not, write to the Free Software Foundation, Inc., 51
  18  * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20 #include "ccanlint.h"
  21 #include "../tools.h"
  22 #include <unistd.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <err.h>
  27 #include <ctype.h>
  28 #include <ccan/str/str.h>
  29 #include <ccan/str_talloc/str_talloc.h>
  30 #include <ccan/talloc/talloc.h>
  31 #include <ccan/opt/opt.h>
  32 #include <ccan/foreach/foreach.h>
  33 #include <ccan/grab_file/grab_file.h>
  34 #include <ccan/cast/cast.h>
  35 #include <ccan/tlist/tlist.h>
  36 #include <ccan/strmap/strmap.h>
  37
  38 struct ccanlint_map {
  39         STRMAP_MEMBERS(struct ccanlint *);
  40 };
  41
  42 int verbose = 0;
  43 static struct ccanlint_map tests;
  44 bool safe_mode = false;
  45 bool keep_results = false;
  46 static bool targeting = false;
  47 static unsigned int timeout;
  48
  49 /* These are overridden at runtime if we can find config.h */
  50 const char *compiler = NULL;
  51 const char *cflags = NULL;
  52
  53 const char *config_header;
  54
  55 #if 0
  56 static void indent_print(const char *string)
  57 {
  58         while (*string) {
  59                 unsigned int line = strcspn(string, "\n");
  60                 printf("\t%.*s", line, string);
  61                 if (string[line] == '\n') {
  62                         printf("\n");
  63                         line++;
  64                 }
  65                 string += line;
  66         }
  67 }
  68 #endif
  69
  70 bool ask(const char *question)
  71 {
  72         char reply[80];
  73
  74         printf("%s ", question);
  75         fflush(stdout);
  76
  77         return fgets(reply, sizeof(reply), stdin) != NULL
  78                 && toupper(reply[0]) == 'Y';
  79 }
  80
  81 /* Skip, but don't remove. */
  82 static bool skip_test(struct dgraph_node *node, const char *why)
  83 {
  84         struct ccanlint *c = container_of(node, struct ccanlint, node);
  85         c->skip = why;
  86         return true;
  87 }
  88
  89 static const char *dep_failed(struct manifest *m)
  90 {
  91         return "dependency couldn't run";
  92 }
  93
  94 static bool cannot_run(struct dgraph_node *node, void *unused)
  95 {
  96         struct ccanlint *c = container_of(node, struct ccanlint, node);
  97         c->can_run = dep_failed;
  98         return true;
  99 }
 100
 101 struct run_info {
 102         bool quiet;
 103         unsigned int score, total;
 104         struct manifest *m;
 105         const char *prefix;
 106         bool pass;
 107 };
 108
 109 static bool run_test(struct dgraph_node *n, struct run_info *run)
 110 {
 111         struct ccanlint *i = container_of(n, struct ccanlint, node);
 112         unsigned int timeleft;
 113         struct score *score;
 114
 115         if (i->done)
 116                 return true;
 117
 118         score = talloc(run->m, struct score);
 119         list_head_init(&score->per_file_errors);
 120         score->error = NULL;
 121         score->pass = false;
 122         score->score = 0;
 123         score->total = 1;
 124
 125         /* We can see skipped things in two cases:
 126          * (1) _info excluded them (presumably because they fail).
 127          * (2) A prerequisite failed.
 128          */
 129         if (i->skip) {
 130                 if (verbose)
 131                         printf("%s%s: skipped (%s)\n",
 132                                run->prefix, i->name, i->skip);
 133                 /* Pass us up to the test which failed, not us. */
 134                 score->pass = true;
 135                 goto out;
 136         }
 137
 138         if (i->can_run) {
 139                 i->skip = i->can_run(run->m);
 140                 if (i->skip) {
 141                         /* Test doesn't apply, or can't run?  That's OK. */
 142                         if (verbose > 1)
 143                                 printf("%s%s: skipped (%s)\n",
 144                                        run->prefix, i->name, i->skip);
 145                         /* Mark our dependencies to skip. */
 146                         dgraph_traverse_from(&i->node, cannot_run, NULL);
 147                         score->pass = true;
 148                         score->total = 0;
 149                         goto out;
 150                 }
 151         }
 152
 153         timeleft = timeout ? timeout : default_timeout_ms;
 154         i->check(run->m, &timeleft, score);
 155         if (timeout && timeleft == 0) {
 156                 i->skip = "timeout";
 157                 if (verbose)
 158                         printf("%s%s: skipped (%s)\n",
 159                                run->prefix, i->name, i->skip);
 160                 /* Mark our dependencies to skip. */
 161                 dgraph_traverse_from(&i->node, skip_test,
 162                                      "dependency timed out");
 163                 score->pass = true;
 164                 score->total = 0;
 165                 goto out;
 166         }
 167
 168         assert(score->score <= score->total);
 169         if ((!score->pass && !run->quiet)
 170             || (score->score < score->total && verbose)
 171             || verbose > 1) {
 172                 printf("%s%s (%s): %s",
 173                        run->prefix, i->name, i->key,
 174                        score->pass ? "PASS" : "FAIL");
 175                 if (score->total > 1)
 176                         printf(" (+%u/%u)", score->score, score->total);
 177                 printf("\n");
 178         }
 179
 180         if ((!run->quiet && !score->pass) || verbose) {
 181                 if (score->error) {
 182                         printf("%s%s", score->error,
 183                                strends(score->error, "\n") ? "" : "\n");
 184                 }
 185         }
 186         if (!run->quiet && score->score < score->total && i->handle)
 187                 i->handle(run->m, score);
 188
 189         if (!score->pass) {
 190                 /* Skip any tests which depend on this one. */
 191                 dgraph_traverse_from(&i->node, skip_test, "dependency failed");
 192         }
 193
 194 out:
 195         run->score += score->score;
 196         run->total += score->total;
 197
 198         /* FIXME: Free score. */
 199         run->pass &= score->pass;
 200         i->done = true;
 201
 202         if (!score->pass && i->compulsory) {
 203                 warnx("%s%s failed", run->prefix, i->name);
 204                 run->score = 0;
 205                 return false;
 206         }
 207         return true;
 208 }
 209
 210 static void register_test(struct ccanlint *test)
 211 {
 212         if (!strmap_add(&tests, test->key, test))
 213                 err(1, "Adding test %s", test->key);
 214         test->options = talloc_array(NULL, char *, 1);
 215         test->options[0] = NULL;
 216         dgraph_init_node(&test->node);
 217 }
 218
 219 static bool get_test(const char *member, struct ccanlint *i,
 220                      struct ccanlint **ret)
 221 {
 222         if (tlist_empty(&i->node.edge[DGRAPH_TO])) {
 223                 *ret = i;
 224                 return false;
 225         }
 226         return true;
 227 }
 228
 229 /**
 230  * get_next_test - retrieves the next test to be processed
 231  **/
 232 static inline struct ccanlint *get_next_test(void)
 233 {
 234         struct ccanlint *i = NULL;
 235
 236         strmap_iterate(&tests, get_test, &i);
 237         if (i)
 238                 return i;
 239
 240         if (strmap_empty(&tests))
 241                 return NULL;
 242
 243         errx(1, "Can't make process; test dependency cycle");
 244 }
 245
 246 static struct ccanlint *find_test(const char *key)
 247 {
 248         return strmap_get(&tests, key);
 249 }
 250
 251 bool is_excluded(const char *name)
 252 {
 253         return find_test(name)->skip != NULL;
 254 }
 255
 256 static bool init_deps(const char *member, struct ccanlint *c, void *unused)
 257 {
 258         char **deps = strsplit(NULL, c->needs, " ");
 259         unsigned int i;
 260
 261         for (i = 0; deps[i]; i++) {
 262                 struct ccanlint *dep;
 263
 264                 dep = find_test(deps[i]);
 265                 if (!dep)
 266                         errx(1, "BUG: unknown dep '%s' for %s",
 267                              deps[i], c->key);
 268                 dgraph_add_edge(&dep->node, &c->node);
 269         }
 270         talloc_free(deps);
 271         return true;
 272 }
 273
 274 static bool check_names(const char *member, struct ccanlint *c,
 275                         struct ccanlint_map *names)
 276 {
 277         if (!strmap_add(names, c->name, c))
 278                 err(1, "Duplicate name %s", c->name);
 279         return true;
 280 }
 281
 282 static void init_tests(void)
 283 {
 284         struct ccanlint_map names;
 285         struct ccanlint **table;
 286         size_t i, num;
 287
 288         strmap_init(&tests);
 289
 290         table = autodata_get(ccanlint_tests, &num);
 291         for (i = 0; i < num; i++)
 292                 register_test(table[i]);
 293         autodata_free(table);
 294
 295         strmap_iterate(&tests, init_deps, NULL);
 296
 297         /* Check for duplicate names. */
 298         strmap_init(&names);
 299         strmap_iterate(&tests, check_names, &names);
 300         strmap_clear(&names);
 301 }
 302
 303 static bool reset_test(struct dgraph_node *node, void *unused)
 304 {
 305         struct ccanlint *c = container_of(node, struct ccanlint, node);
 306         c->skip = NULL;
 307         c->done = false;
 308         return true;
 309 }
 310
 311 static void reset_tests(struct dgraph_node *all)
 312 {
 313         dgraph_traverse_to(all, reset_test, NULL);
 314 }
 315
 316 static bool print_deps(const char *member, struct ccanlint *c, void *unused)
 317 {
 318         if (!tlist_empty(&c->node.edge[DGRAPH_FROM])) {
 319                 struct dgraph_edge *e;
 320
 321                 printf("These depend on %s:\n", c->key);
 322                 dgraph_for_each_edge(&c->node, e, DGRAPH_FROM) {
 323                         struct ccanlint *to = container_of(e->n[DGRAPH_TO],
 324                                                            struct ccanlint,
 325                                                            node);
 326                         printf("\t%s\n", to->key);
 327                 }
 328         }
 329         return true;
 330 }
 331
 332 static void print_test_depends(void)
 333 {
 334         printf("Tests:\n");
 335
 336         strmap_iterate(&tests, print_deps, NULL);
 337 }
 338
 339
 340 static int show_tmpdir(const char *dir)
 341 {
 342         printf("You can find ccanlint working files in '%s'\n", dir);
 343         return 0;
 344 }
 345
 346 static char *keep_tests(void *unused)
 347 {
 348         keep_results = true;
 349
 350         /* Don't automatically destroy temporary dir. */
 351         talloc_set_destructor(temp_dir(NULL), show_tmpdir);
 352         return NULL;
 353 }
 354
 355 static bool remove_test(struct dgraph_node *node, const char *why)
 356 {
 357         struct ccanlint *c = container_of(node, struct ccanlint, node);
 358         c->skip = why;
 359         dgraph_clear_node(node);
 360         return true;
 361 }
 362
 363 static char *exclude_test(const char *testname, void *unused)
 364 {
 365         struct ccanlint *i = find_test(testname);
 366         if (!i)
 367                 return talloc_asprintf(NULL, "No test %s to --exclude",
 368                                        testname);
 369
 370         /* Remove this, and everything which depends on it. */
 371         dgraph_traverse_from(&i->node, remove_test, "excluded on command line");
 372         remove_test(&i->node, "excluded on command line");
 373         return NULL;
 374 }
 375
 376 static void skip_test_and_deps(struct ccanlint *c, const char *why)
 377 {
 378         /* Skip this, and everything which depends on us. */
 379         dgraph_traverse_from(&c->node, skip_test, why);
 380         skip_test(&c->node, why);
 381 }
 382
 383 static char *list_tests(void *arg)
 384 {
 385         struct ccanlint *i;
 386
 387         printf("Tests:\n");
 388         /* This makes them print in topological order. */
 389         while ((i = get_next_test()) != NULL) {
 390                 printf("   %-25s %s\n", i->key, i->name);
 391                 dgraph_clear_node(&i->node);
 392                 strmap_del(&tests, i->key, NULL);
 393         }
 394         exit(0);
 395 }
 396
 397 static bool draw_test(const char *member, struct ccanlint *c, const char *style)
 398 {
 399         /*
 400          * todo: escape labels in case ccanlint test keys have
 401          *       characters interpreted as GraphViz syntax.
 402          */
 403         printf("\t\"%p\" [label=\"%s\"%s]\n", c, c->key, style);
 404         return true;
 405 }
 406
 407 static void test_dgraph_vertices(const char *style)
 408 {
 409         strmap_iterate(&tests, draw_test, style);
 410 }
 411
 412 static bool draw_edges(const char *member, struct ccanlint *c, void *unused)
 413 {
 414         struct dgraph_edge *e;
 415
 416         dgraph_for_each_edge(&c->node, e, DGRAPH_FROM) {
 417                 struct ccanlint *to = container_of(e->n[DGRAPH_TO],
 418                                                    struct ccanlint,
 419                                                    node);
 420                 printf("\t\"%p\" -> \"%p\"\n", c->name, to->name);
 421         }
 422         return true;
 423 }
 424
 425 static void test_dgraph_edges(void)
 426 {
 427         strmap_iterate(&tests, draw_edges, NULL);
 428 }
 429
 430 static char *test_dependency_graph(void *arg)
 431 {
 432         puts("digraph G {");
 433
 434         test_dgraph_vertices("");
 435         test_dgraph_edges();
 436
 437         puts("}");
 438
 439         exit(0);
 440 }
 441
 442 /* Remove empty lines. */
 443 static char **collapse(char **lines, unsigned int *nump)
 444 {
 445         unsigned int i, j;
 446         for (i = j = 0; lines[i]; i++) {
 447                 if (lines[i][0])
 448                         lines[j++] = lines[i];
 449         }
 450         lines[j] = NULL;
 451         if (nump)
 452                 *nump = j;
 453         return lines;
 454 }
 455
 456
 457 static void add_options(struct ccanlint *test, char **options,
 458                         unsigned int num_options)
 459 {
 460         unsigned int num;
 461
 462         if (!test->options)
 463                 num = 0;
 464         else
 465                 /* -1, because last one is NULL. */
 466                 num = talloc_array_length(test->options) - 1;
 467
 468         test->options = talloc_realloc(NULL, test->options,
 469                                        char *,
 470                                        num + num_options + 1);
 471         memcpy(&test->options[num], options, (num_options + 1)*sizeof(char *));
 472 }
 473
 474 void add_info_options(struct ccan_file *info)
 475 {
 476         struct doc_section *d;
 477         unsigned int i;
 478         struct ccanlint *test;
 479
 480         list_for_each(get_ccan_file_docs(info), d, list) {
 481                 if (!streq(d->type, "ccanlint"))
 482                         continue;
 483
 484                 for (i = 0; i < d->num_lines; i++) {
 485                         unsigned int num_words;
 486                         char **words = collapse(strsplit(d, d->lines[i], " \t"),
 487                                                 &num_words);
 488                         if (num_words == 0)
 489                                 continue;
 490
 491                         if (strncmp(words[0], "//", 2) == 0)
 492                                 continue;
 493
 494                         test = find_test(words[0]);
 495                         if (!test) {
 496                                 warnx("%s: unknown ccanlint test '%s'",
 497                                       info->fullname, words[0]);
 498                                 continue;
 499                         }
 500
 501                         if (!words[1]) {
 502                                 warnx("%s: no argument to test '%s'",
 503                                       info->fullname, words[0]);
 504                                 continue;
 505                         }
 506
 507                         /* Known failure? */
 508                         if (strcasecmp(words[1], "FAIL") == 0) {
 509                                 if (!targeting)
 510                                         skip_test_and_deps(test,
 511                                                            "excluded in _info"
 512                                                            " file");
 513                         } else {
 514                                 if (!test->takes_options)
 515                                         warnx("%s: %s doesn't take options",
 516                                               info->fullname, words[0]);
 517                                 add_options(test, words+1, num_words-1);
 518                         }
 519                 }
 520         }
 521 }
 522
 523 /* If options are of form "filename:<option>" they only apply to that file */
 524 char **per_file_options(const struct ccanlint *test, struct ccan_file *f)
 525 {
 526         char **ret;
 527         unsigned int i, j = 0;
 528
 529         /* Fast path. */
 530         if (!test->options[0])
 531                 return test->options;
 532
 533         ret = talloc_array(f, char *, talloc_array_length(test->options));
 534         for (i = 0; test->options[i]; i++) {
 535                 char *optname;
 536
 537                 if (!test->options[i] || !strchr(test->options[i], ':')) {
 538                         optname = test->options[i];
 539                 } else if (strstarts(test->options[i], f->name)
 540                            && test->options[i][strlen(f->name)] == ':') {
 541                         optname = test->options[i] + strlen(f->name) + 1;
 542                 } else
 543                         continue;
 544
 545                 /* FAIL overrides anything else. */
 546                 if (streq(optname, "FAIL")) {
 547                         ret = talloc_array(f, char *, 2);
 548                         ret[0] = (char *)"FAIL";
 549                         ret[1] = NULL;
 550                         return ret;
 551                 }
 552                 ret[j++] = optname;
 553         }
 554         ret[j] = NULL;
 555
 556         /* Shrink it to size so talloc_array_length() works as expected. */
 557         return talloc_realloc(NULL, ret, char *, j + 1);
 558 }
 559
 560 static char *demangle_string(char *string)
 561 {
 562         unsigned int i;
 563         const char mapfrom[] = "abfnrtv";
 564         const char mapto[] = "\a\b\f\n\r\t\v";
 565
 566         if (!strchr(string, '"'))
 567                 return NULL;
 568         string = strchr(string, '"') + 1;
 569         if (!strrchr(string, '"'))
 570                 return NULL;
 571         *strrchr(string, '"') = '\0';
 572
 573         for (i = 0; i < strlen(string); i++) {
 574                 if (string[i] == '\\') {
 575                         char repl;
 576                         unsigned len = 0;
 577                         const char *p = strchr(mapfrom, string[i+1]);
 578                         if (p) {
 579                                 repl = mapto[p - mapfrom];
 580                                 len = 1;
 581                         } else if (strlen(string+i+1) >= 3) {
 582                                 if (string[i+1] == 'x') {
 583                                         repl = (string[i+2]-'0')*16
 584                                                 + string[i+3]-'0';
 585                                         len = 3;
 586                                 } else if (cisdigit(string[i+1])) {
 587                                         repl = (string[i+2]-'0')*8*8
 588                                                 + (string[i+3]-'0')*8
 589                                                 + (string[i+4]-'0');
 590                                         len = 3;
 591                                 }
 592                         }
 593                         if (len == 0) {
 594                                 repl = string[i+1];
 595                                 len = 1;
 596                         }
 597
 598                         string[i] = repl;
 599                         memmove(string + i + 1, string + i + len + 1,
 600                                 strlen(string + i + len + 1) + 1);
 601                 }
 602         }
 603
 604         return string;
 605 }
 606
 607
 608 static void read_config_header(void)
 609 {
 610         char *fname = talloc_asprintf(NULL, "%s/config.h", ccan_dir);
 611         char **lines;
 612         unsigned int i;
 613
 614         config_header = grab_file(NULL, fname, NULL);
 615         if (!config_header) {
 616                 talloc_free(fname);
 617                 return;
 618         }
 619
 620         lines = strsplit(config_header, config_header, "\n");
 621         for (i = 0; i < talloc_array_length(lines) - 1; i++) {
 622                 char *sym;
 623                 const char **line = (const char **)&lines[i];
 624
 625                 if (!get_token(line, "#"))
 626                         continue;
 627                 if (!get_token(line, "define"))
 628                         continue;
 629                 sym = get_symbol_token(lines, line);
 630                 if (streq(sym, "CCAN_COMPILER") && !compiler) {
 631                         compiler = demangle_string(lines[i]);
 632                         if (!compiler)
 633                                 errx(1, "%s:%u:could not parse CCAN_COMPILER",
 634                                      fname, i+1);
 635                         if (verbose > 1)
 636                                 printf("%s: compiler set to '%s'\n",
 637                                        fname, compiler);
 638                 } else if (streq(sym, "CCAN_CFLAGS") && !cflags) {
 639                         cflags = demangle_string(lines[i]);
 640                         if (!cflags)
 641                                 errx(1, "%s:%u:could not parse CCAN_CFLAGS",
 642                                      fname, i+1);
 643                         if (verbose > 1)
 644                                 printf("%s: compiler flags set to '%s'\n",
 645                                        fname, cflags);
 646                 }
 647         }
 648         if (!compiler)
 649                 compiler = CCAN_COMPILER;
 650         if (!cflags)
 651                 compiler = CCAN_CFLAGS;
 652 }
 653
 654 static char *opt_set_const_charp(const char *arg, const char **p)
 655 {
 656         return opt_set_charp(arg, cast_const2(char **, p));
 657 }
 658
 659 static char *opt_set_target(const char *arg, struct dgraph_node *all)
 660 {
 661         struct ccanlint *t = find_test(arg);
 662         if (!t)
 663                 return talloc_asprintf(NULL, "unknown --target %s", arg);
 664
 665         targeting = true;
 666         dgraph_add_edge(&t->node, all);
 667         return NULL;
 668 }
 669
 670 static bool run_tests(struct dgraph_node *all,
 671                       bool summary,
 672                       struct manifest *m,
 673                       const char *prefix)
 674 {
 675         struct run_info run;
 676
 677         run.quiet = summary;
 678         run.m = m;
 679         run.prefix = prefix;
 680         run.score = run.total = 0;
 681         run.pass = true;
 682
 683         dgraph_traverse_to(all, run_test, &run);
 684
 685         printf("%sTotal score: %u/%u\n", prefix, run.score, run.total);
 686         return run.pass;
 687 }
 688
 689 static bool add_to_all(const char *member, struct ccanlint *c,
 690                        struct dgraph_node *all)
 691 {
 692         dgraph_add_edge(&c->node, all);
 693         return true;
 694 }
 695
 696 int main(int argc, char *argv[])
 697 {
 698         bool summary = false, pass = true;
 699         unsigned int i;
 700         struct manifest *m;
 701         const char *prefix = "";
 702         char *dir = talloc_getcwd(NULL), *base_dir = dir, *testlink;
 703         struct dgraph_node all;
 704
 705         /* Empty graph node to which we attach everything else. */
 706         dgraph_init_node(&all);
 707
 708         opt_register_early_noarg("--verbose|-v", opt_inc_intval, &verbose,
 709                                  "verbose mode (up to -vvvv)");
 710         opt_register_noarg("-n|--safe-mode", opt_set_bool, &safe_mode,
 711                          "do not compile anything");
 712         opt_register_noarg("-l|--list-tests", list_tests, NULL,
 713                          "list tests ccanlint performs (and exit)");
 714         opt_register_noarg("--test-dep-graph", test_dependency_graph, NULL,
 715                          "print dependency graph of tests in Graphviz .dot format");
 716         opt_register_noarg("-k|--keep", keep_tests, NULL,
 717                          "do not delete ccanlint working files");
 718         opt_register_noarg("--summary|-s", opt_set_bool, &summary,
 719                            "simply give one line summary");
 720         opt_register_arg("-x|--exclude <testname>", exclude_test, NULL, NULL,
 721                          "exclude <testname> (can be used multiple times)");
 722         opt_register_arg("--timeout <milleseconds>", opt_set_uintval,
 723                          NULL, &timeout,
 724                          "ignore (terminate) tests that are slower than this");
 725         opt_register_arg("-t|--target <testname>", opt_set_target, NULL, &all,
 726                          "only run one test (and its prerequisites)");
 727         opt_register_arg("--compiler <compiler>", opt_set_const_charp,
 728                          NULL, &compiler, "set the compiler");
 729         opt_register_arg("--cflags <flags>", opt_set_const_charp,
 730                          NULL, &cflags, "set the compiler flags");
 731         opt_register_noarg("-?|-h|--help", opt_usage_and_exit,
 732                            "\nA program for checking and guiding development"
 733                            " of CCAN modules.",
 734                            "This usage message");
 735
 736         /* Do verbose before anything else... */
 737         opt_early_parse(argc, argv, opt_log_stderr_exit);
 738
 739         /* We move into temporary directory, so gcov dumps its files there. */
 740         if (chdir(temp_dir(talloc_autofree_context())) != 0)
 741                 err(1, "Error changing to %s temporary dir", temp_dir(NULL));
 742
 743         init_tests();
 744
 745         if (verbose >= 3) {
 746                 compile_verbose = true;
 747                 print_test_depends();
 748         }
 749         if (verbose >= 4)
 750                 tools_verbose = true;
 751
 752         opt_parse(&argc, argv, opt_log_stderr_exit);
 753
 754         if (!targeting)
 755                 strmap_iterate(&tests, add_to_all, &all);
 756
 757         /* This links back to the module's test dir. */
 758         testlink = talloc_asprintf(NULL, "%s/test", temp_dir(NULL));
 759
 760         /* Defaults to pwd. */
 761         if (argc == 1) {
 762                 i = 1;
 763                 goto got_dir;
 764         }
 765
 766         for (i = 1; i < argc; i++) {
 767                 unsigned int score, total_score;
 768
 769                 dir = argv[i];
 770
 771                 if (dir[0] != '/')
 772                         dir = talloc_asprintf_append(NULL, "%s/%s",
 773                                                      base_dir, dir);
 774                 while (strends(dir, "/"))
 775                         dir[strlen(dir)-1] = '\0';
 776
 777         got_dir:
 778                 if (dir != base_dir)
 779                         prefix = talloc_append_string(talloc_basename(NULL,dir),
 780                                                       ": ");
 781
 782                 m = get_manifest(talloc_autofree_context(), dir);
 783
 784                 /* FIXME: This has to come after we've got manifest. */
 785                 if (i == 1)
 786                         read_config_header();
 787
 788                 /* Create a symlink from temp dir back to src dir's
 789                  * test directory. */
 790                 unlink(testlink);
 791                 if (symlink(talloc_asprintf(m, "%s/test", dir), testlink) != 0)
 792                         err(1, "Creating test symlink in %s", temp_dir(NULL));
 793
 794                 score = total_score = 0;
 795                 if (!run_tests(&all, summary, m, prefix))
 796                         pass = false;
 797
 798                 reset_tests(&all);
 799         }
 800         return pass ? 0 : 1;
 801 }