1 /* 2 * Copyright (c) 1994 University of Maryland 3 * All Rights Reserved. 4 * 5 * Permission to use, copy, modify, distribute, and sell this software and its 6 * documentation for any purpose is hereby granted without fee, provided that 7 * the above copyright notice appear in all copies and that both that 8 * copyright notice and this permission notice appear in supporting 9 * documentation, and that the name of U.M. not be used in advertising or 10 * publicity pertaining to distribution of the software without specific, 11 * written prior permission. U.M. makes no representations about the 12 * suitability of this software for any purpose. It is provided "as is" 13 * without express or implied warranty. 14 * 15 * U.M. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL U.M. 17 * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 18 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 19 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 20 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 21 * 22 * Author: James da Silva, Systems Design and Analysis Group 23 * Computer Science Department 24 * University of Maryland at College Park 25 */ 26 /* 27 * ======================================================================== 28 * crunchgen.c 29 * 30 * Generates a Makefile and main C file for a crunched executable, 31 * from specs given in a .conf file. 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include <sys/param.h> 38 #include <sys/stat.h> 39 40 #include <ctype.h> 41 #include <err.h> 42 #include <paths.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <unistd.h> 47 48 #define CRUNCH_VERSION "0.2" 49 50 #define MAXLINELEN 16384 51 #define MAXFIELDS 2048 52 53 54 /* internal representation of conf file: */ 55 56 /* simple lists of strings suffice for most parms */ 57 58 typedef struct strlst { 59 struct strlst *next; 60 char *str; 61 } strlst_t; 62 63 /* progs have structure, each field can be set with "special" or calculated */ 64 65 typedef struct prog { 66 struct prog *next; /* link field */ 67 char *name; /* program name */ 68 char *ident; /* C identifier for the program name */ 69 char *srcdir; 70 char *realsrcdir; 71 char *objdir; 72 char *objvar; /* Makefile variable to replace OBJS */ 73 strlst_t *objs, *objpaths; 74 strlst_t *buildopts; 75 strlst_t *keeplist; 76 strlst_t *links; 77 strlst_t *libs; 78 strlst_t *libs_so; 79 int goterror; 80 } prog_t; 81 82 83 /* global state */ 84 85 strlst_t *buildopts = NULL; 86 strlst_t *srcdirs = NULL; 87 strlst_t *libs = NULL; 88 strlst_t *libs_so = NULL; 89 prog_t *progs = NULL; 90 91 char confname[MAXPATHLEN], infilename[MAXPATHLEN]; 92 char outmkname[MAXPATHLEN], outcfname[MAXPATHLEN], execfname[MAXPATHLEN]; 93 char tempfname[MAXPATHLEN], cachename[MAXPATHLEN], curfilename[MAXPATHLEN]; 94 char outhdrname[MAXPATHLEN] ; /* user-supplied header for *.mk */ 95 char *objprefix; /* where are the objects ? */ 96 char *path_make; 97 int linenum = -1; 98 int goterror = 0; 99 100 int verbose, readcache; /* options */ 101 int reading_cache; 102 int makeobj = 0; /* add 'make obj' rules to the makefile */ 103 104 int list_mode; 105 106 /* general library routines */ 107 108 void status(const char *str); 109 void out_of_memory(void); 110 void add_string(strlst_t **listp, char *str); 111 int is_dir(const char *pathname); 112 int is_nonempty_file(const char *pathname); 113 int subtract_strlst(strlst_t **lista, strlst_t **listb); 114 int in_list(strlst_t **listp, char *str); 115 116 /* helper routines for main() */ 117 118 void usage(void); 119 void parse_conf_file(void); 120 void gen_outputs(void); 121 122 extern char *crunched_skel[]; 123 124 125 int 126 main(int argc, char **argv) 127 { 128 char *p; 129 int optc; 130 131 verbose = 1; 132 readcache = 1; 133 *outmkname = *outcfname = *execfname = '\0'; 134 135 path_make = getenv("MAKE"); 136 if (path_make == NULL || *path_make == '\0') 137 path_make = "make"; 138 139 p = getenv("MAKEOBJDIRPREFIX"); 140 if (p == NULL || *p == '\0') 141 objprefix = "/usr/obj"; /* default */ 142 else 143 if ((objprefix = strdup(p)) == NULL) 144 out_of_memory(); 145 146 while((optc = getopt(argc, argv, "lh:m:c:e:p:foq")) != -1) { 147 switch(optc) { 148 case 'f': 149 readcache = 0; 150 break; 151 case 'o': 152 makeobj = 1; 153 break; 154 case 'q': 155 verbose = 0; 156 break; 157 158 case 'm': 159 strlcpy(outmkname, optarg, sizeof(outmkname)); 160 break; 161 case 'p': 162 if ((objprefix = strdup(optarg)) == NULL) 163 out_of_memory(); 164 break; 165 166 case 'h': 167 strlcpy(outhdrname, optarg, sizeof(outhdrname)); 168 break; 169 case 'c': 170 strlcpy(outcfname, optarg, sizeof(outcfname)); 171 break; 172 case 'e': 173 strlcpy(execfname, optarg, sizeof(execfname)); 174 break; 175 176 case 'l': 177 list_mode++; 178 verbose = 0; 179 break; 180 181 case '?': 182 default: 183 usage(); 184 } 185 } 186 187 argc -= optind; 188 argv += optind; 189 190 if (argc != 1) 191 usage(); 192 193 /* 194 * generate filenames 195 */ 196 197 strlcpy(infilename, argv[0], sizeof(infilename)); 198 199 /* confname = `basename infilename .conf` */ 200 201 if ((p=strrchr(infilename, '/')) != NULL) 202 strlcpy(confname, p + 1, sizeof(confname)); 203 else 204 strlcpy(confname, infilename, sizeof(confname)); 205 206 if ((p=strrchr(confname, '.')) != NULL && !strcmp(p, ".conf")) 207 *p = '\0'; 208 209 if (!*outmkname) 210 snprintf(outmkname, sizeof(outmkname), "%s.mk", confname); 211 if (!*outcfname) 212 snprintf(outcfname, sizeof(outcfname), "%s.c", confname); 213 if (!*execfname) 214 snprintf(execfname, sizeof(execfname), "%s", confname); 215 216 snprintf(cachename, sizeof(cachename), "%s.cache", confname); 217 snprintf(tempfname, sizeof(tempfname), "%s/crunchgen_%sXXXXXX", 218 getenv("TMPDIR") ? getenv("TMPDIR") : _PATH_TMP, confname); 219 220 parse_conf_file(); 221 if (list_mode) 222 exit(goterror); 223 224 gen_outputs(); 225 226 exit(goterror); 227 } 228 229 230 void 231 usage(void) 232 { 233 fprintf(stderr, "%s%s\n\t%s%s\n", "usage: crunchgen [-foq] ", 234 "[-h <makefile-header-name>] [-m <makefile>]", 235 "[-p <obj-prefix>] [-c <c-file-name>] [-e <exec-file>] ", 236 "<conffile>"); 237 exit(1); 238 } 239 240 241 /* 242 * ======================================================================== 243 * parse_conf_file subsystem 244 * 245 */ 246 247 /* helper routines for parse_conf_file */ 248 249 void parse_one_file(char *filename); 250 void parse_line(char *pline, int *fc, char **fv, int nf); 251 void add_srcdirs(int argc, char **argv); 252 void add_progs(int argc, char **argv); 253 void add_link(int argc, char **argv); 254 void add_libs(int argc, char **argv); 255 void add_libs_so(int argc, char **argv); 256 void add_buildopts(int argc, char **argv); 257 void add_special(int argc, char **argv); 258 259 prog_t *find_prog(char *str); 260 void add_prog(char *progname); 261 262 263 void 264 parse_conf_file(void) 265 { 266 if (!is_nonempty_file(infilename)) 267 errx(1, "fatal: input file \"%s\" not found", infilename); 268 269 parse_one_file(infilename); 270 if (readcache && is_nonempty_file(cachename)) { 271 reading_cache = 1; 272 parse_one_file(cachename); 273 } 274 } 275 276 277 void 278 parse_one_file(char *filename) 279 { 280 char *fieldv[MAXFIELDS]; 281 int fieldc; 282 void (*f)(int c, char **v); 283 FILE *cf; 284 char line[MAXLINELEN]; 285 286 snprintf(line, sizeof(line), "reading %s", filename); 287 status(line); 288 strlcpy(curfilename, filename, sizeof(curfilename)); 289 290 if ((cf = fopen(curfilename, "r")) == NULL) { 291 warn("%s", curfilename); 292 goterror = 1; 293 return; 294 } 295 296 linenum = 0; 297 while (fgets(line, MAXLINELEN, cf) != NULL) { 298 linenum++; 299 parse_line(line, &fieldc, fieldv, MAXFIELDS); 300 301 if (fieldc < 1) 302 continue; 303 304 if (!strcmp(fieldv[0], "srcdirs")) 305 f = add_srcdirs; 306 else if(!strcmp(fieldv[0], "progs")) 307 f = add_progs; 308 else if(!strcmp(fieldv[0], "ln")) 309 f = add_link; 310 else if(!strcmp(fieldv[0], "libs")) 311 f = add_libs; 312 else if(!strcmp(fieldv[0], "libs_so")) 313 f = add_libs_so; 314 else if(!strcmp(fieldv[0], "buildopts")) 315 f = add_buildopts; 316 else if(!strcmp(fieldv[0], "special")) 317 f = add_special; 318 else { 319 warnx("%s:%d: skipping unknown command `%s'", 320 curfilename, linenum, fieldv[0]); 321 goterror = 1; 322 continue; 323 } 324 325 if (fieldc < 2) { 326 warnx("%s:%d: %s %s", 327 curfilename, linenum, fieldv[0], 328 "command needs at least 1 argument, skipping"); 329 goterror = 1; 330 continue; 331 } 332 333 f(fieldc, fieldv); 334 } 335 336 if (ferror(cf)) { 337 warn("%s", curfilename); 338 goterror = 1; 339 } 340 fclose(cf); 341 } 342 343 344 void 345 parse_line(char *pline, int *fc, char **fv, int nf) 346 { 347 char *p; 348 349 p = pline; 350 *fc = 0; 351 352 while (1) { 353 while (isspace((unsigned char)*p)) 354 p++; 355 356 if (*p == '\0' || *p == '#') 357 break; 358 359 if (*fc < nf) 360 fv[(*fc)++] = p; 361 362 while (*p && !isspace((unsigned char)*p) && *p != '#') 363 p++; 364 365 if (*p == '\0' || *p == '#') 366 break; 367 368 *p++ = '\0'; 369 } 370 371 if (*p) 372 *p = '\0'; /* needed for '#' case */ 373 } 374 375 376 void 377 add_srcdirs(int argc, char **argv) 378 { 379 int i; 380 381 for (i = 1; i < argc; i++) { 382 if (is_dir(argv[i])) 383 add_string(&srcdirs, argv[i]); 384 else { 385 warnx("%s:%d: `%s' is not a directory, skipping it", 386 curfilename, linenum, argv[i]); 387 goterror = 1; 388 } 389 } 390 } 391 392 393 void 394 add_progs(int argc, char **argv) 395 { 396 int i; 397 398 for (i = 1; i < argc; i++) 399 add_prog(argv[i]); 400 } 401 402 403 void 404 add_prog(char *progname) 405 { 406 prog_t *p1, *p2; 407 408 /* add to end, but be smart about dups */ 409 410 for (p1 = NULL, p2 = progs; p2 != NULL; p1 = p2, p2 = p2->next) 411 if (!strcmp(p2->name, progname)) 412 return; 413 414 p2 = malloc(sizeof(prog_t)); 415 if(p2) { 416 memset(p2, 0, sizeof(prog_t)); 417 p2->name = strdup(progname); 418 } 419 if (!p2 || !p2->name) 420 out_of_memory(); 421 422 p2->next = NULL; 423 if (p1 == NULL) 424 progs = p2; 425 else 426 p1->next = p2; 427 428 p2->ident = NULL; 429 p2->srcdir = NULL; 430 p2->realsrcdir = NULL; 431 p2->objdir = NULL; 432 p2->links = NULL; 433 p2->libs = NULL; 434 p2->libs_so = NULL; 435 p2->objs = NULL; 436 p2->keeplist = NULL; 437 p2->buildopts = NULL; 438 p2->goterror = 0; 439 440 if (list_mode) 441 printf("%s\n",progname); 442 } 443 444 445 void 446 add_link(int argc, char **argv) 447 { 448 int i; 449 prog_t *p = find_prog(argv[1]); 450 451 if (p == NULL) { 452 warnx("%s:%d: no prog %s previously declared, skipping link", 453 curfilename, linenum, argv[1]); 454 goterror = 1; 455 return; 456 } 457 458 for (i = 2; i < argc; i++) { 459 if (list_mode) 460 printf("%s\n",argv[i]); 461 462 add_string(&p->links, argv[i]); 463 } 464 } 465 466 467 void 468 add_libs(int argc, char **argv) 469 { 470 int i; 471 472 for(i = 1; i < argc; i++) { 473 add_string(&libs, argv[i]); 474 if ( in_list(&libs_so, argv[i]) ) 475 warnx("%s:%d: " 476 "library `%s' specified as dynamic earlier", 477 curfilename, linenum, argv[i]); 478 } 479 } 480 481 482 void 483 add_libs_so(int argc, char **argv) 484 { 485 int i; 486 487 for(i = 1; i < argc; i++) { 488 add_string(&libs_so, argv[i]); 489 if ( in_list(&libs, argv[i]) ) 490 warnx("%s:%d: " 491 "library `%s' specified as static earlier", 492 curfilename, linenum, argv[i]); 493 } 494 } 495 496 497 void 498 add_buildopts(int argc, char **argv) 499 { 500 int i; 501 502 for (i = 1; i < argc; i++) 503 add_string(&buildopts, argv[i]); 504 } 505 506 507 void 508 add_special(int argc, char **argv) 509 { 510 int i; 511 prog_t *p = find_prog(argv[1]); 512 513 if (p == NULL) { 514 if (reading_cache) 515 return; 516 517 warnx("%s:%d: no prog %s previously declared, skipping special", 518 curfilename, linenum, argv[1]); 519 goterror = 1; 520 return; 521 } 522 523 if (!strcmp(argv[2], "ident")) { 524 if (argc != 4) 525 goto argcount; 526 if ((p->ident = strdup(argv[3])) == NULL) 527 out_of_memory(); 528 } else if (!strcmp(argv[2], "srcdir")) { 529 if (argc != 4) 530 goto argcount; 531 if ((p->srcdir = strdup(argv[3])) == NULL) 532 out_of_memory(); 533 } else if (!strcmp(argv[2], "objdir")) { 534 if(argc != 4) 535 goto argcount; 536 if((p->objdir = strdup(argv[3])) == NULL) 537 out_of_memory(); 538 } else if (!strcmp(argv[2], "objs")) { 539 p->objs = NULL; 540 for (i = 3; i < argc; i++) 541 add_string(&p->objs, argv[i]); 542 } else if (!strcmp(argv[2], "objpaths")) { 543 p->objpaths = NULL; 544 for (i = 3; i < argc; i++) 545 add_string(&p->objpaths, argv[i]); 546 } else if (!strcmp(argv[2], "keep")) { 547 p->keeplist = NULL; 548 for(i = 3; i < argc; i++) 549 add_string(&p->keeplist, argv[i]); 550 } else if (!strcmp(argv[2], "objvar")) { 551 if(argc != 4) 552 goto argcount; 553 if ((p->objvar = strdup(argv[3])) == NULL) 554 out_of_memory(); 555 } else if (!strcmp(argv[2], "buildopts")) { 556 p->buildopts = NULL; 557 for (i = 3; i < argc; i++) 558 add_string(&p->buildopts, argv[i]); 559 } else if (!strcmp(argv[2], "lib")) { 560 for (i = 3; i < argc; i++) 561 add_string(&p->libs, argv[i]); 562 } else { 563 warnx("%s:%d: bad parameter name `%s', skipping line", 564 curfilename, linenum, argv[2]); 565 goterror = 1; 566 } 567 return; 568 569 argcount: 570 warnx("%s:%d: too %s arguments, expected \"special %s %s <string>\"", 571 curfilename, linenum, argc < 4? "few" : "many", argv[1], argv[2]); 572 goterror = 1; 573 } 574 575 576 prog_t *find_prog(char *str) 577 { 578 prog_t *p; 579 580 for (p = progs; p != NULL; p = p->next) 581 if (!strcmp(p->name, str)) 582 return p; 583 584 return NULL; 585 } 586 587 588 /* 589 * ======================================================================== 590 * gen_outputs subsystem 591 * 592 */ 593 594 /* helper subroutines */ 595 596 void remove_error_progs(void); 597 void fillin_program(prog_t *p); 598 void gen_specials_cache(void); 599 void gen_output_makefile(void); 600 void gen_output_cfile(void); 601 602 void fillin_program_objs(prog_t *p, char *path); 603 void top_makefile_rules(FILE *outmk); 604 void prog_makefile_rules(FILE *outmk, prog_t *p); 605 void output_strlst(FILE *outf, strlst_t *lst); 606 char *genident(char *str); 607 char *dir_search(char *progname); 608 609 610 void 611 gen_outputs(void) 612 { 613 prog_t *p; 614 615 for (p = progs; p != NULL; p = p->next) 616 fillin_program(p); 617 618 remove_error_progs(); 619 gen_specials_cache(); 620 gen_output_cfile(); 621 gen_output_makefile(); 622 status(""); 623 fprintf(stderr, 624 "Run \"%s -f %s\" to build crunched binary.\n", 625 path_make, outmkname); 626 } 627 628 /* 629 * run the makefile for the program to find which objects are necessary 630 */ 631 void 632 fillin_program(prog_t *p) 633 { 634 char path[MAXPATHLEN]; 635 char line[MAXLINELEN]; 636 FILE *f; 637 638 snprintf(line, MAXLINELEN, "filling in parms for %s", p->name); 639 status(line); 640 641 if (!p->ident) 642 p->ident = genident(p->name); 643 644 /* look for the source directory if one wasn't specified by a special */ 645 if (!p->srcdir) { 646 p->srcdir = dir_search(p->name); 647 } 648 649 /* Determine the actual srcdir (maybe symlinked). */ 650 if (p->srcdir) { 651 snprintf(line, MAXLINELEN, "cd %s && echo -n `/bin/pwd`", 652 p->srcdir); 653 f = popen(line,"r"); 654 if (!f) 655 errx(1, "Can't execute: %s\n", line); 656 657 path[0] = '\0'; 658 fgets(path, sizeof path, f); 659 if (pclose(f)) 660 errx(1, "Can't execute: %s\n", line); 661 662 if (!*path) 663 errx(1, "Can't perform pwd on: %s\n", p->srcdir); 664 665 p->realsrcdir = strdup(path); 666 } 667 668 /* Unless the option to make object files was specified the 669 * the objects will be built in the source directory unless 670 * an object directory already exists. 671 */ 672 if (!makeobj && !p->objdir && p->srcdir) { 673 char *auto_obj; 674 675 auto_obj = NULL; 676 snprintf(line, sizeof line, "%s/%s", objprefix, p->realsrcdir); 677 if (is_dir(line) || 678 ((auto_obj = getenv("MK_AUTO_OBJ")) != NULL && 679 strcmp(auto_obj, "yes") == 0)) { 680 if ((p->objdir = strdup(line)) == NULL) 681 out_of_memory(); 682 } else 683 p->objdir = p->realsrcdir; 684 } 685 686 /* 687 * XXX look for a Makefile.{name} in local directory first. 688 * This lets us override the original Makefile. 689 */ 690 snprintf(path, sizeof(path), "Makefile.%s", p->name); 691 if (is_nonempty_file(path)) { 692 snprintf(line, MAXLINELEN, "Using %s for %s", path, p->name); 693 status(line); 694 } else 695 if (p->srcdir) 696 snprintf(path, sizeof(path), "%s/Makefile", p->srcdir); 697 if (!p->objs && p->srcdir && is_nonempty_file(path)) 698 fillin_program_objs(p, path); 699 700 if (!p->srcdir && !p->objdir && verbose) 701 warnx("%s: %s: %s", 702 "warning: could not find source directory", 703 infilename, p->name); 704 if (!p->objs && verbose) 705 warnx("%s: %s: warning: could not find any .o files", 706 infilename, p->name); 707 708 if ((!p->srcdir || !p->objdir) && !p->objs) 709 p->goterror = 1; 710 } 711 712 void 713 fillin_program_objs(prog_t *p, char *path) 714 { 715 char *obj, *cp; 716 int fd, rc; 717 FILE *f; 718 char *objvar="OBJS"; 719 strlst_t *s; 720 char line[MAXLINELEN]; 721 722 /* discover the objs from the srcdir Makefile */ 723 724 if ((fd = mkstemp(tempfname)) == -1) { 725 perror(tempfname); 726 exit(1); 727 } 728 if ((f = fdopen(fd, "w")) == NULL) { 729 warn("%s", tempfname); 730 goterror = 1; 731 return; 732 } 733 if (p->objvar) 734 objvar = p->objvar; 735 736 /* 737 * XXX include outhdrname (e.g. to contain Make variables) 738 */ 739 if (outhdrname[0] != '\0') 740 fprintf(f, ".include \"%s\"\n", outhdrname); 741 fprintf(f, ".include \"%s\"\n", path); 742 fprintf(f, ".POSIX:\n"); 743 if (buildopts) { 744 fprintf(f, "BUILDOPTS+="); 745 output_strlst(f, buildopts); 746 } 747 fprintf(f, ".if defined(PROG)\n"); 748 fprintf(f, "%s?=${PROG}.o\n", objvar); 749 fprintf(f, ".endif\n"); 750 fprintf(f, "loop:\n\t@echo 'OBJS= '${%s}\n", objvar); 751 752 fprintf(f, "crunchgen_objs:\n" 753 "\t@cd %s && %s -f %s $(BUILDOPTS) $(%s_OPTS)", 754 p->srcdir, path_make, tempfname, p->ident); 755 for (s = p->buildopts; s != NULL; s = s->next) 756 fprintf(f, " %s", s->str); 757 fprintf(f, " loop\n"); 758 759 fclose(f); 760 761 snprintf(line, MAXLINELEN, "cd %s && %s -f %s -B crunchgen_objs", 762 p->srcdir, path_make, tempfname); 763 if ((f = popen(line, "r")) == NULL) { 764 warn("submake pipe"); 765 goterror = 1; 766 return; 767 } 768 769 while(fgets(line, MAXLINELEN, f)) { 770 if (strncmp(line, "OBJS= ", 6)) { 771 warnx("make error: %s", line); 772 goterror = 1; 773 continue; 774 } 775 776 cp = line + 6; 777 while (isspace((unsigned char)*cp)) 778 cp++; 779 780 while(*cp) { 781 obj = cp; 782 while (*cp && !isspace((unsigned char)*cp)) 783 cp++; 784 if (*cp) 785 *cp++ = '\0'; 786 add_string(&p->objs, obj); 787 while (isspace((unsigned char)*cp)) 788 cp++; 789 } 790 } 791 792 if ((rc=pclose(f)) != 0) { 793 warnx("make error: make returned %d", rc); 794 goterror = 1; 795 } 796 797 unlink(tempfname); 798 } 799 800 void 801 remove_error_progs(void) 802 { 803 prog_t *p1, *p2; 804 805 p1 = NULL; p2 = progs; 806 while (p2 != NULL) { 807 if (!p2->goterror) 808 p1 = p2, p2 = p2->next; 809 else { 810 /* delete it from linked list */ 811 warnx("%s: %s: ignoring program because of errors", 812 infilename, p2->name); 813 if (p1) 814 p1->next = p2->next; 815 else 816 progs = p2->next; 817 p2 = p2->next; 818 } 819 } 820 } 821 822 void 823 gen_specials_cache(void) 824 { 825 FILE *cachef; 826 prog_t *p; 827 char line[MAXLINELEN]; 828 829 snprintf(line, MAXLINELEN, "generating %s", cachename); 830 status(line); 831 832 if ((cachef = fopen(cachename, "w")) == NULL) { 833 warn("%s", cachename); 834 goterror = 1; 835 return; 836 } 837 838 fprintf(cachef, "# %s - parm cache generated from %s by crunchgen " 839 " %s\n\n", 840 cachename, infilename, CRUNCH_VERSION); 841 842 for (p = progs; p != NULL; p = p->next) { 843 fprintf(cachef, "\n"); 844 if (p->srcdir) 845 fprintf(cachef, "special %s srcdir %s\n", 846 p->name, p->srcdir); 847 if (p->objdir) 848 fprintf(cachef, "special %s objdir %s\n", 849 p->name, p->objdir); 850 if (p->objs) { 851 fprintf(cachef, "special %s objs", p->name); 852 output_strlst(cachef, p->objs); 853 } 854 if (p->objpaths) { 855 fprintf(cachef, "special %s objpaths", p->name); 856 output_strlst(cachef, p->objpaths); 857 } 858 } 859 fclose(cachef); 860 } 861 862 863 void 864 gen_output_makefile(void) 865 { 866 prog_t *p; 867 FILE *outmk; 868 char line[MAXLINELEN]; 869 870 snprintf(line, MAXLINELEN, "generating %s", outmkname); 871 status(line); 872 873 if ((outmk = fopen(outmkname, "w")) == NULL) { 874 warn("%s", outmkname); 875 goterror = 1; 876 return; 877 } 878 879 fprintf(outmk, "# %s - generated from %s by crunchgen %s\n\n", 880 outmkname, infilename, CRUNCH_VERSION); 881 882 if (outhdrname[0] != '\0') 883 fprintf(outmk, ".include \"%s\"\n", outhdrname); 884 885 top_makefile_rules(outmk); 886 for (p = progs; p != NULL; p = p->next) 887 prog_makefile_rules(outmk, p); 888 889 fprintf(outmk, "\n# ========\n"); 890 fclose(outmk); 891 } 892 893 894 void 895 gen_output_cfile(void) 896 { 897 char **cp; 898 FILE *outcf; 899 prog_t *p; 900 strlst_t *s; 901 char line[MAXLINELEN]; 902 903 snprintf(line, MAXLINELEN, "generating %s", outcfname); 904 status(line); 905 906 if((outcf = fopen(outcfname, "w")) == NULL) { 907 warn("%s", outcfname); 908 goterror = 1; 909 return; 910 } 911 912 fprintf(outcf, 913 "/* %s - generated from %s by crunchgen %s */\n", 914 outcfname, infilename, CRUNCH_VERSION); 915 916 fprintf(outcf, "#define EXECNAME \"%s\"\n", execfname); 917 for (cp = crunched_skel; *cp != NULL; cp++) 918 fprintf(outcf, "%s\n", *cp); 919 920 for (p = progs; p != NULL; p = p->next) 921 fprintf(outcf, "extern int _crunched_%s_stub();\n", p->ident); 922 923 fprintf(outcf, "\nstruct stub entry_points[] = {\n"); 924 for (p = progs; p != NULL; p = p->next) { 925 fprintf(outcf, "\t{ \"%s\", _crunched_%s_stub },\n", 926 p->name, p->ident); 927 for (s = p->links; s != NULL; s = s->next) 928 fprintf(outcf, "\t{ \"%s\", _crunched_%s_stub },\n", 929 s->str, p->ident); 930 } 931 932 fprintf(outcf, "\t{ EXECNAME, crunched_main },\n"); 933 fprintf(outcf, "\t{ NULL, NULL }\n};\n"); 934 fclose(outcf); 935 } 936 937 938 char *genident(char *str) 939 { 940 char *n, *s, *d; 941 942 /* 943 * generates a Makefile/C identifier from a program name, 944 * mapping '-' to '_' and ignoring all other non-identifier 945 * characters. This leads to programs named "foo.bar" and 946 * "foobar" to map to the same identifier. 947 */ 948 949 if ((n = strdup(str)) == NULL) 950 return NULL; 951 for (d = s = n; *s != '\0'; s++) { 952 if (*s == '-') 953 *d++ = '_'; 954 else if (*s == '_' || isalnum((unsigned char)*s)) 955 *d++ = *s; 956 } 957 *d = '\0'; 958 return n; 959 } 960 961 962 char *dir_search(char *progname) 963 { 964 char path[MAXPATHLEN]; 965 strlst_t *dir; 966 char *srcdir; 967 968 for (dir = srcdirs; dir != NULL; dir = dir->next) { 969 snprintf(path, MAXPATHLEN, "%s/%s", dir->str, progname); 970 if (!is_dir(path)) 971 continue; 972 973 if ((srcdir = strdup(path)) == NULL) 974 out_of_memory(); 975 976 return srcdir; 977 } 978 return NULL; 979 } 980 981 982 void 983 top_makefile_rules(FILE *outmk) 984 { 985 prog_t *p; 986 987 fprintf(outmk, "LD?= ld\n"); 988 if ( subtract_strlst(&libs, &libs_so) ) 989 fprintf(outmk, "# NOTE: Some LIBS declarations below overridden by LIBS_SO\n"); 990 991 fprintf(outmk, "LIBS+="); 992 output_strlst(outmk, libs); 993 994 fprintf(outmk, "LIBS_SO+="); 995 output_strlst(outmk, libs_so); 996 997 if (makeobj) { 998 fprintf(outmk, "MAKEOBJDIRPREFIX?=%s\n", objprefix); 999 fprintf(outmk, "MAKEENV=env MAKEOBJDIRPREFIX=$(MAKEOBJDIRPREFIX)\n"); 1000 fprintf(outmk, "CRUNCHMAKE=$(MAKEENV) $(MAKE)\n"); 1001 } else { 1002 fprintf(outmk, "CRUNCHMAKE=$(MAKE)\n"); 1003 } 1004 1005 if (buildopts) { 1006 fprintf(outmk, "BUILDOPTS+="); 1007 output_strlst(outmk, buildopts); 1008 } 1009 1010 fprintf(outmk, "CRUNCHED_OBJS="); 1011 for (p = progs; p != NULL; p = p->next) 1012 fprintf(outmk, " %s.lo", p->name); 1013 fprintf(outmk, "\n"); 1014 1015 fprintf(outmk, "SUBMAKE_TARGETS="); 1016 for (p = progs; p != NULL; p = p->next) 1017 fprintf(outmk, " %s_make", p->ident); 1018 fprintf(outmk, "\nSUBCLEAN_TARGETS="); 1019 for (p = progs; p != NULL; p = p->next) 1020 fprintf(outmk, " %s_clean", p->ident); 1021 fprintf(outmk, "\n\n"); 1022 1023 fprintf(outmk, "all: objs exe\nobjs: $(SUBMAKE_TARGETS)\n"); 1024 fprintf(outmk, "exe: %s\n", execfname); 1025 fprintf(outmk, "%s: %s.o $(CRUNCHED_OBJS) $(SUBMAKE_TARGETS)\n", execfname, execfname); 1026 fprintf(outmk, ".if defined(LIBS_SO) && !empty(LIBS_SO)\n"); 1027 fprintf(outmk, "\t$(CC) -o %s %s.o $(CRUNCHED_OBJS) \\\n", 1028 execfname, execfname); 1029 fprintf(outmk, "\t\t-Xlinker -Bstatic $(LIBS) \\\n"); 1030 fprintf(outmk, "\t\t-Xlinker -Bdynamic $(LIBS_SO)\n"); 1031 fprintf(outmk, ".else\n"); 1032 fprintf(outmk, "\t$(CC) -static -o %s %s.o $(CRUNCHED_OBJS) $(LIBS)\n", 1033 execfname, execfname); 1034 fprintf(outmk, ".endif\n"); 1035 fprintf(outmk, "realclean: clean subclean\n"); 1036 fprintf(outmk, "clean:\n\trm -f %s *.lo *.o *_stub.c\n", execfname); 1037 fprintf(outmk, "subclean: $(SUBCLEAN_TARGETS)\n"); 1038 } 1039 1040 1041 void 1042 prog_makefile_rules(FILE *outmk, prog_t *p) 1043 { 1044 strlst_t *lst; 1045 1046 fprintf(outmk, "\n# -------- %s\n\n", p->name); 1047 1048 fprintf(outmk, "%s_OBJDIR=", p->ident); 1049 if (p->objdir) 1050 fprintf(outmk, "%s", p->objdir); 1051 else 1052 fprintf(outmk, "$(MAKEOBJDIRPREFIX)/$(%s_REALSRCDIR)\n", 1053 p->ident); 1054 fprintf(outmk, "\n"); 1055 1056 fprintf(outmk, "%s_OBJPATHS=", p->ident); 1057 if (p->objpaths) 1058 output_strlst(outmk, p->objpaths); 1059 else { 1060 for (lst = p->objs; lst != NULL; lst = lst->next) { 1061 fprintf(outmk, " $(%s_OBJDIR)/%s", p->ident, lst->str); 1062 } 1063 fprintf(outmk, "\n"); 1064 } 1065 fprintf(outmk, "$(%s_OBJPATHS): .NOMETA\n", p->ident); 1066 1067 if (p->srcdir && p->objs) { 1068 fprintf(outmk, "%s_SRCDIR=%s\n", p->ident, p->srcdir); 1069 fprintf(outmk, "%s_REALSRCDIR=%s\n", p->ident, p->realsrcdir); 1070 1071 fprintf(outmk, "%s_OBJS=", p->ident); 1072 output_strlst(outmk, p->objs); 1073 if (p->buildopts != NULL) { 1074 fprintf(outmk, "%s_OPTS+=", p->ident); 1075 output_strlst(outmk, p->buildopts); 1076 } 1077 #if 0 1078 fprintf(outmk, "$(%s_OBJPATHS): %s_make\n\n", p->ident, p->ident); 1079 #endif 1080 fprintf(outmk, "%s_make:\n", p->ident); 1081 fprintf(outmk, "\t(cd $(%s_SRCDIR) && ", p->ident); 1082 if (makeobj) 1083 fprintf(outmk, "$(CRUNCHMAKE) obj && "); 1084 fprintf(outmk, "\\\n"); 1085 fprintf(outmk, "\t\t$(CRUNCHMAKE) $(BUILDOPTS) $(%s_OPTS) depend &&", 1086 p->ident); 1087 fprintf(outmk, "\\\n"); 1088 fprintf(outmk, "\t\t$(CRUNCHMAKE) $(BUILDOPTS) $(%s_OPTS) " 1089 "$(%s_OBJS))", 1090 p->ident, p->ident); 1091 fprintf(outmk, "\n"); 1092 fprintf(outmk, "%s_clean:\n", p->ident); 1093 fprintf(outmk, "\t(cd $(%s_SRCDIR) && $(CRUNCHMAKE) $(BUILDOPTS) clean cleandepend)\n\n", 1094 p->ident); 1095 } else { 1096 fprintf(outmk, "%s_make:\n", p->ident); 1097 fprintf(outmk, "\t@echo \"** cannot make objs for %s\"\n\n", 1098 p->name); 1099 } 1100 1101 if (p->libs) { 1102 fprintf(outmk, "%s_LIBS=", p->ident); 1103 output_strlst(outmk, p->libs); 1104 } 1105 1106 fprintf(outmk, "%s_stub.c:\n", p->name); 1107 fprintf(outmk, "\techo \"" 1108 "extern int main(int argc, char **argv, char **envp); " 1109 "int _crunched_%s_stub(int argc, char **argv, char **envp)" 1110 "{return main(argc,argv,envp);}\" >%s_stub.c\n", 1111 p->ident, p->name); 1112 fprintf(outmk, "%s.lo: %s_stub.o $(%s_OBJPATHS)", 1113 p->name, p->name, p->ident); 1114 if (p->libs) 1115 fprintf(outmk, " $(%s_LIBS)", p->ident); 1116 1117 fprintf(outmk, "\n"); 1118 fprintf(outmk, "\t$(CC) -nostdlib -Wl,-dc -r -o %s.lo %s_stub.o $(%s_OBJPATHS)", 1119 p->name, p->name, p->ident); 1120 if (p->libs) 1121 fprintf(outmk, " $(%s_LIBS)", p->ident); 1122 fprintf(outmk, "\n"); 1123 fprintf(outmk, "\tcrunchide -k _crunched_%s_stub ", p->ident); 1124 for (lst = p->keeplist; lst != NULL; lst = lst->next) 1125 fprintf(outmk, "-k _%s ", lst->str); 1126 fprintf(outmk, "%s.lo\n", p->name); 1127 } 1128 1129 void 1130 output_strlst(FILE *outf, strlst_t *lst) 1131 { 1132 for (; lst != NULL; lst = lst->next) 1133 if ( strlen(lst->str) ) 1134 fprintf(outf, " %s", lst->str); 1135 fprintf(outf, "\n"); 1136 } 1137 1138 1139 /* 1140 * ======================================================================== 1141 * general library routines 1142 * 1143 */ 1144 1145 void 1146 status(const char *str) 1147 { 1148 static int lastlen = 0; 1149 int len, spaces; 1150 1151 if (!verbose) 1152 return; 1153 1154 len = strlen(str); 1155 spaces = lastlen - len; 1156 if (spaces < 1) 1157 spaces = 1; 1158 1159 fprintf(stderr, " [%s]%*.*s\r", str, spaces, spaces, " "); 1160 fflush(stderr); 1161 lastlen = len; 1162 } 1163 1164 1165 void 1166 out_of_memory(void) 1167 { 1168 err(1, "%s: %d: out of memory, stopping", infilename, linenum); 1169 } 1170 1171 1172 void 1173 add_string(strlst_t **listp, char *str) 1174 { 1175 strlst_t *p1, *p2; 1176 1177 /* add to end, but be smart about dups */ 1178 1179 for (p1 = NULL, p2 = *listp; p2 != NULL; p1 = p2, p2 = p2->next) 1180 if (!strcmp(p2->str, str)) 1181 return; 1182 1183 p2 = malloc(sizeof(strlst_t)); 1184 if (p2) { 1185 p2->next = NULL; 1186 p2->str = strdup(str); 1187 } 1188 if (!p2 || !p2->str) 1189 out_of_memory(); 1190 1191 if (p1 == NULL) 1192 *listp = p2; 1193 else 1194 p1->next = p2; 1195 } 1196 1197 int 1198 subtract_strlst(strlst_t **lista, strlst_t **listb) 1199 { 1200 int subtract_count = 0; 1201 strlst_t *p1; 1202 for (p1 = *listb; p1 != NULL; p1 = p1->next) 1203 if ( in_list(lista, p1->str) ) { 1204 warnx("Will compile library `%s' dynamically", p1->str); 1205 strcat(p1->str, ""); 1206 subtract_count++; 1207 } 1208 return subtract_count; 1209 } 1210 1211 int 1212 in_list(strlst_t **listp, char *str) 1213 { 1214 strlst_t *p1; 1215 for (p1 = *listp; p1 != NULL; p1 = p1->next) 1216 if (!strcmp(p1->str, str)) 1217 return 1; 1218 return 0; 1219 } 1220 1221 int 1222 is_dir(const char *pathname) 1223 { 1224 struct stat buf; 1225 1226 if (stat(pathname, &buf) == -1) 1227 return 0; 1228 1229 return S_ISDIR(buf.st_mode); 1230 } 1231 1232 int 1233 is_nonempty_file(const char *pathname) 1234 { 1235 struct stat buf; 1236 1237 if (stat(pathname, &buf) == -1) 1238 return 0; 1239 1240 return S_ISREG(buf.st_mode) && buf.st_size > 0; 1241 } 1242