crunchgen.c revision 1.5
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 #include <stdlib.h> 34 #include <unistd.h> 35 #include <stdio.h> 36 #include <ctype.h> 37 #include <string.h> 38 39 #include <sys/types.h> 40 #include <sys/stat.h> 41 #include <sys/param.h> 42 43 #define CRUNCH_VERSION "0.2" 44 45 #define MAXLINELEN 16384 46 #define MAXFIELDS 2048 47 48 49 /* internal representation of conf file: */ 50 51 /* simple lists of strings suffice for most parms */ 52 53 typedef struct strlst { 54 struct strlst *next; 55 char *str; 56 } strlst_t; 57 58 /* progs have structure, each field can be set with "special" or calculated */ 59 60 typedef struct prog { 61 struct prog *next; 62 char *name, *ident; 63 char *srcdir, *objdir; 64 strlst_t *objs, *objpaths; 65 strlst_t *links; 66 int goterror; 67 } prog_t; 68 69 70 /* global state */ 71 72 strlst_t *srcdirs = NULL; 73 strlst_t *libs = NULL; 74 prog_t *progs = NULL; 75 76 char line[MAXLINELEN]; 77 78 char confname[MAXPATHLEN], infilename[MAXPATHLEN]; 79 char outmkname[MAXPATHLEN], outcfname[MAXPATHLEN], execfname[MAXPATHLEN]; 80 char tempfname[MAXPATHLEN], cachename[MAXPATHLEN], curfilename[MAXPATHLEN]; 81 char topdir[MAXPATHLEN]; 82 char libdir[MAXPATHLEN] = "/usr/lib"; 83 int linenum = -1; 84 int goterror = 0; 85 86 char *pname = "crunchgen"; 87 88 int verbose, readcache; /* options */ 89 int reading_cache; 90 91 /* general library routines */ 92 93 void status(char *str); 94 void out_of_memory(void); 95 void add_string(strlst_t **listp, char *str); 96 int is_dir(char *pathname); 97 int is_nonempty_file(char *pathname); 98 99 /* helper routines for main() */ 100 101 void usage(void); 102 void parse_conf_file(void); 103 void gen_outputs(void); 104 105 106 int main(int argc, char **argv) 107 { 108 char *p; 109 int optc; 110 extern int optind; 111 extern char *optarg; 112 113 verbose = 1; 114 readcache = 1; 115 *outmkname = *outcfname = *execfname = '\0'; 116 117 if(argc > 0) pname = argv[0]; 118 119 while((optc = getopt(argc, argv, "m:c:e:fqD:L:")) != -1) { 120 switch(optc) { 121 case 'f': readcache = 0; break; 122 case 'q': verbose = 0; break; 123 124 case 'm': strcpy(outmkname, optarg); break; 125 case 'c': strcpy(outcfname, optarg); break; 126 case 'e': strcpy(execfname, optarg); break; 127 128 case 'D': strcpy(topdir, optarg); break; 129 case 'L': strcpy(libdir, optarg); break; 130 131 case '?': 132 default: usage(); 133 } 134 } 135 136 argc -= optind; 137 argv += optind; 138 139 if(argc != 1) usage(); 140 141 /* 142 * generate filenames 143 */ 144 145 strcpy(infilename, argv[0]); 146 147 /* confname = `basename infilename .conf` */ 148 149 if((p=strrchr(infilename, '/')) != NULL) strcpy(confname, p+1); 150 else strcpy(confname, infilename); 151 if((p=strrchr(confname, '.')) != NULL && !strcmp(p, ".conf")) *p = '\0'; 152 153 if(!*outmkname) sprintf(outmkname, "%s.mk", confname); 154 if(!*outcfname) sprintf(outcfname, "%s.c", confname); 155 if(!*execfname) sprintf(execfname, "%s", confname); 156 157 sprintf(cachename, "%s.cache", confname); 158 sprintf(tempfname, ".tmp_%sXXXXXX", confname); 159 if(mktemp(tempfname) == NULL) { 160 perror(tempfname); 161 exit(1); 162 } 163 164 parse_conf_file(); 165 gen_outputs(); 166 167 exit(goterror); 168 } 169 170 171 void usage(void) 172 { 173 fprintf(stderr, 174 "%s [-fq] [-m <makefile>] [-c <c file>] [-e <exec file>] <conffile>\n", 175 pname); 176 exit(1); 177 } 178 179 180 /* 181 * ======================================================================== 182 * parse_conf_file subsystem 183 * 184 */ 185 186 /* helper routines for parse_conf_file */ 187 188 void parse_one_file(char *filename); 189 void parse_line(char *line, int *fc, char **fv, int nf); 190 void add_srcdirs(int argc, char **argv); 191 void add_progs(int argc, char **argv); 192 void add_link(int argc, char **argv); 193 void add_libs(int argc, char **argv); 194 void add_special(int argc, char **argv); 195 196 prog_t *find_prog(char *str); 197 void add_prog(char *progname); 198 199 200 void parse_conf_file(void) 201 { 202 if(!is_nonempty_file(infilename)) { 203 fprintf(stderr, "%s: fatal: input file \"%s\" not found.\n", 204 pname, infilename); 205 exit(1); 206 } 207 parse_one_file(infilename); 208 if(readcache && is_nonempty_file(cachename)) { 209 reading_cache = 1; 210 parse_one_file(cachename); 211 } 212 } 213 214 215 void parse_one_file(char *filename) 216 { 217 char *fieldv[MAXFIELDS]; 218 int fieldc; 219 void (*f)(int c, char **v); 220 FILE *cf; 221 222 sprintf(line, "reading %s", filename); 223 status(line); 224 strcpy(curfilename, filename); 225 226 if((cf = fopen(curfilename, "r")) == NULL) { 227 perror(curfilename); 228 goterror = 1; 229 return; 230 } 231 232 linenum = 0; 233 while(fgets(line, MAXLINELEN, cf) != NULL) { 234 linenum++; 235 parse_line(line, &fieldc, fieldv, MAXFIELDS); 236 if(fieldc < 1) continue; 237 if(!strcmp(fieldv[0], "srcdirs")) f = add_srcdirs; 238 else if(!strcmp(fieldv[0], "progs")) f = add_progs; 239 else if(!strcmp(fieldv[0], "ln")) f = add_link; 240 else if(!strcmp(fieldv[0], "libs")) f = add_libs; 241 else if(!strcmp(fieldv[0], "special")) f = add_special; 242 else { 243 fprintf(stderr, "%s:%d: skipping unknown command `%s'.\n", 244 curfilename, linenum, fieldv[0]); 245 goterror = 1; 246 continue; 247 } 248 if(fieldc < 2) { 249 fprintf(stderr, 250 "%s:%d: %s command needs at least 1 argument, skipping.\n", 251 curfilename, linenum, fieldv[0]); 252 goterror = 1; 253 continue; 254 } 255 f(fieldc, fieldv); 256 } 257 258 if(ferror(cf)) { 259 perror(curfilename); 260 goterror = 1; 261 } 262 fclose(cf); 263 } 264 265 266 void parse_line(char *line, int *fc, char **fv, int nf) 267 { 268 char *p; 269 270 p = line; 271 *fc = 0; 272 while(1) { 273 while(isspace(*p)) p++; 274 if(*p == '\0' || *p == '#') break; 275 276 if(*fc < nf) fv[(*fc)++] = p; 277 while(*p && !isspace(*p) && *p != '#') p++; 278 if(*p == '\0' || *p == '#') break; 279 *p++ = '\0'; 280 } 281 if(*p) *p = '\0'; /* needed for '#' case */ 282 } 283 284 285 void add_srcdirs(int argc, char **argv) 286 { 287 int i; 288 char tmppath[MAXPATHLEN]; 289 290 for(i=1;i<argc;i++) { 291 if (argv[i][0] == '/' || topdir[0] == '\0') 292 strcpy(tmppath, argv[i]); 293 else { 294 strcpy(tmppath, topdir); 295 strcat(tmppath, "/"); 296 strcat(tmppath, argv[i]); 297 } 298 if(is_dir(tmppath)) 299 add_string(&srcdirs, tmppath); 300 else { 301 fprintf(stderr, "%s:%d: `%s' is not a directory, skipping it.\n", 302 curfilename, linenum, tmppath); 303 goterror = 1; 304 } 305 } 306 } 307 308 309 void add_progs(int argc, char **argv) 310 { 311 int i; 312 313 for(i=1;i<argc;i++) 314 add_prog(argv[i]); 315 } 316 317 318 void add_prog(char *progname) 319 { 320 prog_t *p1, *p2; 321 322 /* add to end, but be smart about dups */ 323 324 for(p1 = NULL, p2 = progs; p2 != NULL; p1 = p2, p2 = p2->next) 325 if(!strcmp(p2->name, progname)) return; 326 327 p2 = malloc(sizeof(prog_t)); 328 if(p2) p2->name = strdup(progname); 329 if(!p2 || !p2->name) 330 out_of_memory(); 331 332 p2->next = NULL; 333 if(p1 == NULL) progs = p2; 334 else p1->next = p2; 335 336 p2->ident = p2->srcdir = p2->objdir = NULL; 337 p2->links = p2->objs = NULL; 338 p2->goterror = 0; 339 } 340 341 342 void add_link(int argc, char **argv) 343 { 344 int i; 345 prog_t *p = find_prog(argv[1]); 346 347 if(p == NULL) { 348 fprintf(stderr, 349 "%s:%d: no prog %s previously declared, skipping link.\n", 350 curfilename, linenum, argv[1]); 351 goterror = 1; 352 return; 353 } 354 for(i=2;i<argc;i++) 355 add_string(&p->links, argv[i]); 356 } 357 358 359 void add_libs(int argc, char **argv) 360 { 361 int i; 362 363 for(i=1;i<argc;i++) 364 add_string(&libs, argv[i]); 365 } 366 367 368 void add_special(int argc, char **argv) 369 { 370 int i; 371 prog_t *p = find_prog(argv[1]); 372 373 if(p == NULL) { 374 if(reading_cache) return; 375 fprintf(stderr, 376 "%s:%d: no prog %s previously declared, skipping special.\n", 377 curfilename, linenum, argv[1]); 378 goterror = 1; 379 return; 380 } 381 382 if(!strcmp(argv[2], "ident")) { 383 if(argc != 4) goto argcount; 384 if((p->ident = strdup(argv[3])) == NULL) 385 out_of_memory(); 386 } 387 else if(!strcmp(argv[2], "srcdir")) { 388 if(argc != 4) goto argcount; 389 if (argv[3][0] == '/' || topdir[0] == '\0') { 390 if((p->srcdir = strdup(argv[3])) == NULL) 391 out_of_memory(); 392 } else { 393 char tmppath[MAXPATHLEN]; 394 strcpy(tmppath, topdir); 395 strcat(tmppath, "/"); 396 strcat(tmppath, argv[3]); 397 if((p->srcdir = strdup(tmppath)) == NULL) 398 out_of_memory(); 399 } 400 } 401 else if(!strcmp(argv[2], "objdir")) { 402 if(argc != 4) goto argcount; 403 if((p->objdir = strdup(argv[3])) == NULL) 404 out_of_memory(); 405 } 406 else if(!strcmp(argv[2], "objs")) { 407 p->objs = NULL; 408 for(i=3;i<argc;i++) 409 add_string(&p->objs, argv[i]); 410 } 411 else if(!strcmp(argv[2], "objpaths")) { 412 p->objpaths = NULL; 413 for(i=3;i<argc;i++) 414 add_string(&p->objpaths, argv[i]); 415 } 416 else { 417 fprintf(stderr, "%s:%d: bad parameter name `%s', skipping line.\n", 418 curfilename, linenum, argv[2]); 419 goterror = 1; 420 } 421 return; 422 423 424 argcount: 425 fprintf(stderr, 426 "%s:%d: too %s arguments, expected \"special %s %s <string>\".\n", 427 curfilename, linenum, argc < 4? "few" : "many", argv[1], argv[2]); 428 goterror = 1; 429 } 430 431 432 prog_t *find_prog(char *str) 433 { 434 prog_t *p; 435 436 for(p = progs; p != NULL; p = p->next) 437 if(!strcmp(p->name, str)) return p; 438 439 return NULL; 440 } 441 442 443 /* 444 * ======================================================================== 445 * gen_outputs subsystem 446 * 447 */ 448 449 /* helper subroutines */ 450 451 void remove_error_progs(void); 452 void fillin_program(prog_t *p); 453 void gen_specials_cache(void); 454 void gen_output_makefile(void); 455 void gen_output_cfile(void); 456 457 void fillin_program_objs(prog_t *p, char *path); 458 void top_makefile_rules(FILE *outmk); 459 void prog_makefile_rules(FILE *outmk, prog_t *p); 460 void output_strlst(FILE *outf, strlst_t *lst); 461 char *genident(char *str); 462 char *dir_search(char *progname); 463 464 465 void gen_outputs(void) 466 { 467 prog_t *p; 468 469 for(p = progs; p != NULL; p = p->next) 470 fillin_program(p); 471 472 remove_error_progs(); 473 gen_specials_cache(); 474 gen_output_cfile(); 475 gen_output_makefile(); 476 status(""); 477 fprintf(stderr, 478 "Run \"make -f %s objs exe\" to build crunched binary.\n", 479 outmkname); 480 } 481 482 483 void fillin_program(prog_t *p) 484 { 485 char path[MAXPATHLEN]; 486 char *srcparent; 487 strlst_t *s; 488 489 sprintf(line, "filling in parms for %s", p->name); 490 status(line); 491 492 if(!p->ident) 493 p->ident = genident(p->name); 494 if(!p->srcdir) { 495 srcparent = dir_search(p->name); 496 if(srcparent) { 497 sprintf(path, "%s/%s", srcparent, p->name); 498 if(is_dir(path)) 499 p->srcdir = strdup(path); 500 } 501 } 502 if(!p->objdir && p->srcdir) { 503 sprintf(path, "%s/obj", p->srcdir); 504 if(is_dir(path)) 505 p->objdir = strdup(path); 506 else { 507 sprintf(path, "%s/obj.%s", p->srcdir, MACHINE); 508 if(is_dir(path)) 509 p->objdir = strdup(path); 510 else 511 p->objdir = p->srcdir; 512 } 513 } 514 515 if(p->srcdir) sprintf(path, "%s/Makefile", p->srcdir); 516 if(!p->objs && p->srcdir && is_nonempty_file(path)) 517 fillin_program_objs(p, path); 518 519 if(!p->objpaths && p->objdir && p->objs) 520 for(s = p->objs; s != NULL; s = s->next) { 521 sprintf(line, "%s/%s", p->objdir, s->str); 522 add_string(&p->objpaths, line); 523 } 524 525 if(!p->srcdir && verbose) 526 fprintf(stderr, "%s: %s: warning: could not find source directory.\n", 527 infilename, p->name); 528 if(!p->objs && verbose) 529 fprintf(stderr, "%s: %s: warning: could not find any .o files.\n", 530 infilename, p->name); 531 532 if(!p->objpaths) { 533 fprintf(stderr, 534 "%s: %s: error: no objpaths specified or calculated.\n", 535 infilename, p->name); 536 p->goterror = goterror = 1; 537 } 538 } 539 540 void fillin_program_objs(prog_t *p, char *path) 541 { 542 char *obj, *cp; 543 int rc; 544 FILE *f; 545 546 /* discover the objs from the srcdir Makefile */ 547 548 if((f = fopen(tempfname, "w")) == NULL) { 549 perror(tempfname); 550 goterror = 1; 551 return; 552 } 553 554 fprintf(f, ".include \"%s\"\n", path); 555 fprintf(f, ".if defined(PROG) && !defined(OBJS)\n"); 556 fprintf(f, "OBJS=${PROG}.o\n"); 557 fprintf(f, ".endif\n"); 558 fprintf(f, "crunchgen_objs:\n\t@echo 'OBJS= '${OBJS}\n"); 559 fclose(f); 560 561 sprintf(line, "make -f %s crunchgen_objs 2>&1", tempfname); 562 if((f = popen(line, "r")) == NULL) { 563 perror("submake pipe"); 564 goterror = 1; 565 return; 566 } 567 568 while(fgets(line, MAXLINELEN, f)) { 569 if(strncmp(line, "OBJS= ", 6)) { 570 if (strcmp(line, 571 "sh: warning: running as root with dot in PATH\n") == 0) 572 continue; 573 fprintf(stderr, "make error: %s", line); 574 goterror = 1; 575 continue; 576 } 577 cp = line + 6; 578 while(isspace(*cp)) cp++; 579 while(*cp) { 580 obj = cp; 581 while(*cp && !isspace(*cp)) cp++; 582 if(*cp) *cp++ = '\0'; 583 add_string(&p->objs, obj); 584 while(isspace(*cp)) cp++; 585 } 586 } 587 if((rc=pclose(f)) != 0) { 588 fprintf(stderr, "make error: make returned %d\n", rc); 589 goterror = 1; 590 } 591 unlink(tempfname); 592 } 593 594 void remove_error_progs(void) 595 { 596 prog_t *p1, *p2; 597 598 p1 = NULL; p2 = progs; 599 while(p2 != NULL) { 600 if(!p2->goterror) 601 p1 = p2, p2 = p2->next; 602 else { 603 /* delete it from linked list */ 604 fprintf(stderr, "%s: %s: ignoring program because of errors.\n", 605 infilename, p2->name); 606 if(p1) p1->next = p2->next; 607 else progs = p2->next; 608 p2 = p2->next; 609 } 610 } 611 } 612 613 void gen_specials_cache(void) 614 { 615 FILE *cachef; 616 prog_t *p; 617 618 sprintf(line, "generating %s", cachename); 619 status(line); 620 621 if((cachef = fopen(cachename, "w")) == NULL) { 622 perror(cachename); 623 goterror = 1; 624 return; 625 } 626 627 fprintf(cachef, "# %s - parm cache generated from %s by crunchgen %s\n\n", 628 cachename, infilename, CRUNCH_VERSION); 629 630 for(p = progs; p != NULL; p = p->next) { 631 fprintf(cachef, "\n"); 632 if(p->srcdir) 633 fprintf(cachef, "special %s srcdir %s\n", p->name, p->srcdir); 634 if(p->objdir) 635 fprintf(cachef, "special %s objdir %s\n", p->name, p->objdir); 636 if(p->objs) { 637 fprintf(cachef, "special %s objs", p->name); 638 output_strlst(cachef, p->objs); 639 } 640 fprintf(cachef, "special %s objpaths", p->name); 641 output_strlst(cachef, p->objpaths); 642 } 643 fclose(cachef); 644 } 645 646 647 void gen_output_makefile(void) 648 { 649 prog_t *p; 650 FILE *outmk; 651 652 sprintf(line, "generating %s", outmkname); 653 status(line); 654 655 if((outmk = fopen(outmkname, "w")) == NULL) { 656 perror(outmkname); 657 goterror = 1; 658 return; 659 } 660 661 fprintf(outmk, "# %s - generated from %s by crunchgen %s\n\n", 662 outmkname, infilename, CRUNCH_VERSION); 663 664 top_makefile_rules(outmk); 665 666 for(p = progs; p != NULL; p = p->next) 667 prog_makefile_rules(outmk, p); 668 669 fprintf(outmk, "\n# ========\n"); 670 fclose(outmk); 671 } 672 673 674 void gen_output_cfile(void) 675 { 676 extern char *crunched_skel[]; 677 char **cp; 678 FILE *outcf; 679 prog_t *p; 680 strlst_t *s; 681 682 sprintf(line, "generating %s", outcfname); 683 status(line); 684 685 if((outcf = fopen(outcfname, "w")) == NULL) { 686 perror(outcfname); 687 goterror = 1; 688 return; 689 } 690 691 fprintf(outcf, 692 "/* %s - generated from %s by crunchgen %s */\n", 693 outcfname, infilename, CRUNCH_VERSION); 694 695 fprintf(outcf, "#define EXECNAME \"%s\"\n", execfname); 696 for(cp = crunched_skel; *cp != NULL; cp++) 697 fprintf(outcf, "%s\n", *cp); 698 699 for(p = progs; p != NULL; p = p->next) 700 fprintf(outcf, "extern int _crunched_%s_stub();\n", p->ident); 701 702 fprintf(outcf, "\nstruct stub entry_points[] = {\n"); 703 for(p = progs; p != NULL; p = p->next) { 704 fprintf(outcf, "\t{ \"%s\", _crunched_%s_stub },\n", 705 p->name, p->ident); 706 for(s = p->links; s != NULL; s = s->next) 707 fprintf(outcf, "\t{ \"%s\", _crunched_%s_stub },\n", 708 s->str, p->ident); 709 } 710 711 fprintf(outcf, "\t{ EXECNAME, crunched_main },\n"); 712 fprintf(outcf, "\t{ NULL, NULL }\n};\n"); 713 fclose(outcf); 714 } 715 716 717 char *genident(char *str) 718 { 719 char *n,*s,*d; 720 721 /* 722 * generates a Makefile/C identifier from a program name, mapping '-' to 723 * '_' and ignoring all other non-identifier characters. This leads to 724 * programs named "foo.bar" and "foobar" to map to the same identifier. 725 */ 726 727 if((n = strdup(str)) == NULL) 728 return NULL; 729 for(d = s = n; *s != '\0'; s++) { 730 if(*s == '-') *d++ = '_'; 731 else if(*s == '_' || isalnum(*s)) *d++ = *s; 732 } 733 *d = '\0'; 734 return n; 735 } 736 737 738 char *dir_search(char *progname) 739 { 740 char path[MAXPATHLEN]; 741 strlst_t *dir; 742 743 for(dir=srcdirs; dir != NULL; dir=dir->next) { 744 sprintf(path, "%s/%s", dir->str, progname); 745 if(is_dir(path)) return dir->str; 746 } 747 return NULL; 748 } 749 750 751 void top_makefile_rules(FILE *outmk) 752 { 753 prog_t *p; 754 755 fprintf(outmk, "STRIP=strip\n"); 756 fprintf(outmk, "LIBS="); 757 fprintf(outmk, "-L%s ", libdir); 758 output_strlst(outmk, libs); 759 760 fprintf(outmk, "CRUNCHED_OBJS="); 761 for(p = progs; p != NULL; p = p->next) 762 fprintf(outmk, " %s.lo", p->name); 763 fprintf(outmk, "\n"); 764 765 fprintf(outmk, "SUBMAKE_TARGETS="); 766 for(p = progs; p != NULL; p = p->next) 767 fprintf(outmk, " %s_make", p->ident); 768 fprintf(outmk, "\n\n"); 769 770 fprintf(outmk, "%s: %s.o $(CRUNCHED_OBJS)\n", 771 execfname, execfname); 772 fprintf(outmk, "\t$(CC) -static -o %s %s.o $(CRUNCHED_OBJS) $(LIBS)\n", 773 execfname, execfname); 774 fprintf(outmk, "\t$(STRIP) %s\n", execfname); 775 fprintf(outmk, "all: objs exe\nobjs: $(SUBMAKE_TARGETS)\n"); 776 fprintf(outmk, "exe: %s\n", execfname); 777 fprintf(outmk, "clean:\n\trm -f %s *.lo *.o *_stub.c\n", 778 execfname); 779 } 780 781 782 void prog_makefile_rules(FILE *outmk, prog_t *p) 783 { 784 fprintf(outmk, "\n# -------- %s\n\n", p->name); 785 786 if(p->srcdir && p->objs) { 787 fprintf(outmk, "%s_SRCDIR=%s\n", p->ident, p->srcdir); 788 fprintf(outmk, "%s_OBJS=", p->ident); 789 output_strlst(outmk, p->objs); 790 fprintf(outmk, "%s_make:\n", p->ident); 791 fprintf(outmk, "\t(cd $(%s_SRCDIR); make $(%s_OBJS))\n\n", 792 p->ident, p->ident); 793 } 794 else 795 fprintf(outmk, "%s_make:\n\t@echo \"** cannot make objs for %s\"\n\n", 796 p->ident, p->name); 797 798 fprintf(outmk, "%s_OBJPATHS=", p->ident); 799 output_strlst(outmk, p->objpaths); 800 801 fprintf(outmk, "%s_stub.c:\n", p->name); 802 fprintf(outmk, "\techo \"" 803 "int _crunched_%s_stub(int argc, char **argv, char **envp)" 804 "{return main(argc,argv,envp);}\" >%s_stub.c\n", 805 p->ident, p->name); 806 fprintf(outmk, "%s.lo: %s_stub.o $(%s_OBJPATHS)\n", 807 p->name, p->name, p->ident); 808 fprintf(outmk, "\tld -dc -r -o %s.lo %s_stub.o $(%s_OBJPATHS)\n", 809 p->name, p->name, p->ident); 810 fprintf(outmk, "\tcrunchide -k __crunched_%s_stub %s.lo\n", 811 p->ident, p->name); 812 } 813 814 void output_strlst(FILE *outf, strlst_t *lst) 815 { 816 for(; lst != NULL; lst = lst->next) 817 fprintf(outf, " %s", lst->str); 818 fprintf(outf, "\n"); 819 } 820 821 822 /* 823 * ======================================================================== 824 * general library routines 825 * 826 */ 827 828 void status(char *str) 829 { 830 static int lastlen = 0; 831 int len, spaces; 832 833 if(!verbose) return; 834 835 len = strlen(str); 836 spaces = lastlen - len; 837 if(spaces < 1) spaces = 1; 838 839 fprintf(stderr, " [%s]%*.*s\r", str, spaces, spaces, " "); 840 fflush(stderr); 841 lastlen = len; 842 } 843 844 845 void out_of_memory(void) 846 { 847 fprintf(stderr, "%s: %d: out of memory, stopping.\n", infilename, linenum); 848 exit(1); 849 } 850 851 852 void add_string(strlst_t **listp, char *str) 853 { 854 strlst_t *p1, *p2; 855 856 /* add to end, but be smart about dups */ 857 858 for(p1 = NULL, p2 = *listp; p2 != NULL; p1 = p2, p2 = p2->next) 859 if(!strcmp(p2->str, str)) return; 860 861 p2 = malloc(sizeof(strlst_t)); 862 if(p2) p2->str = strdup(str); 863 if(!p2 || !p2->str) 864 out_of_memory(); 865 866 p2->next = NULL; 867 if(p1 == NULL) *listp = p2; 868 else p1->next = p2; 869 } 870 871 872 int is_dir(char *pathname) 873 { 874 struct stat buf; 875 876 if(stat(pathname, &buf) == -1) 877 return 0; 878 return S_ISDIR(buf.st_mode); 879 } 880 881 int is_nonempty_file(char *pathname) 882 { 883 struct stat buf; 884 885 if(stat(pathname, &buf) == -1) 886 return 0; 887 888 return S_ISREG(buf.st_mode) && buf.st_size > 0; 889 } 890
Indexes created Thu Sep 25 16:09:42 GMT 2025