crunchgen.c revision 70112
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 * $FreeBSD: head/usr.sbin/crunch/crunchgen/crunchgen.c 70112 2000-12-17 16:13:23Z joe $ 27 */ 28/* 29 * ======================================================================== 30 * crunchgen.c 31 * 32 * Generates a Makefile and main C file for a crunched executable, 33 * from specs given in a .conf file. 34 */ 35#include <ctype.h> 36#include <err.h> 37#include <stdio.h> 38#include <stdlib.h> 39#include <string.h> 40#include <unistd.h> 41 42#include <sys/types.h> 43#include <sys/stat.h> 44#include <sys/param.h> 45 46#define CRUNCH_VERSION "0.2" 47 48#define MAXLINELEN 16384 49#define MAXFIELDS 2048 50 51 52/* internal representation of conf file: */ 53 54/* simple lists of strings suffice for most parms */ 55 56typedef struct strlst { 57 struct strlst *next; 58 char *str; 59} strlst_t; 60 61/* progs have structure, each field can be set with "special" or calculated */ 62 63typedef struct prog { 64 struct prog *next; /* link field */ 65 char *name; /* program name */ 66 char *ident; /* C identifier for the program name */ 67 char *srcdir; 68 char *realsrcdir; 69 char *objdir; 70 char *objvar; /* Makefile variable to replace OBJS */ 71 strlst_t *objs, *objpaths; 72 strlst_t *buildopts; 73 strlst_t *keeplist; 74 strlst_t *links; 75 int goterror; 76} prog_t; 77 78 79/* global state */ 80 81strlst_t *buildopts = NULL; 82strlst_t *srcdirs = NULL; 83strlst_t *libs = NULL; 84prog_t *progs = NULL; 85 86char confname[MAXPATHLEN], infilename[MAXPATHLEN]; 87char outmkname[MAXPATHLEN], outcfname[MAXPATHLEN], execfname[MAXPATHLEN]; 88char tempfname[MAXPATHLEN], cachename[MAXPATHLEN], curfilename[MAXPATHLEN]; 89char outhdrname[MAXPATHLEN] ; /* user-supplied header for *.mk */ 90char *objprefix; /* where are the objects ? */ 91int linenum = -1; 92int goterror = 0; 93 94int verbose, readcache; /* options */ 95int reading_cache; 96int makeobj = 0; /* add 'make obj' rules to the makefile */ 97 98int list_mode; 99 100/* general library routines */ 101 102void status(char *str); 103void out_of_memory(void); 104void add_string(strlst_t **listp, char *str); 105int is_dir(char *pathname); 106int is_nonempty_file(char *pathname); 107 108/* helper routines for main() */ 109 110void usage(void); 111void parse_conf_file(void); 112void gen_outputs(void); 113 114 115int main(int argc, char **argv) 116{ 117 char *p; 118 int optc; 119 120 verbose = 1; 121 readcache = 1; 122 *outmkname = *outcfname = *execfname = '\0'; 123 124 p = getenv("MAKEOBJDIRPREFIX"); 125 if (p == NULL || *p == '\0') 126 objprefix = "/usr/obj"; /* default */ 127 else 128 objprefix = strdup(p); 129 130 while((optc = getopt(argc, argv, "lh:m:c:e:p:foq")) != -1) { 131 switch(optc) { 132 case 'f': readcache = 0; break; 133 case 'o': makeobj = 1; break; 134 case 'q': verbose = 0; break; 135 136 case 'm': strcpy(outmkname, optarg); break; 137 case 'p': objprefix = strdup(optarg); break; 138 case 'h': strcpy(outhdrname, optarg); break; 139 case 'c': strcpy(outcfname, optarg); break; 140 case 'e': strcpy(execfname, optarg); break; 141 case 'l': list_mode++; verbose = 0; break; 142 143 case '?': 144 default: usage(); 145 } 146 } 147 148 argc -= optind; 149 argv += optind; 150 151 if(argc != 1) usage(); 152 153 /* 154 * generate filenames 155 */ 156 157 strcpy(infilename, argv[0]); 158 159 /* confname = `basename infilename .conf` */ 160 161 if((p=strrchr(infilename, '/')) != NULL) strcpy(confname, p+1); 162 else strcpy(confname, infilename); 163 if((p=strrchr(confname, '.')) != NULL && !strcmp(p, ".conf")) *p = '\0'; 164 165 if(!*outmkname) sprintf(outmkname, "%s.mk", confname); 166 if(!*outcfname) sprintf(outcfname, "%s.c", confname); 167 if(!*execfname) sprintf(execfname, "%s", confname); 168 169 snprintf(cachename, sizeof(cachename), "%s.cache", confname); 170 snprintf(tempfname, sizeof(tempfname), ".tmp_%sXXXXXX", confname); 171 if(mktemp(tempfname) == NULL) { 172 perror(tempfname); 173 exit(1); 174 } 175 176 parse_conf_file(); 177 if (list_mode) 178 exit(goterror); 179 180 gen_outputs(); 181 182 exit(goterror); 183} 184 185 186void usage(void) 187{ 188 fprintf(stderr, "%s\n%s\n", 189 "usage: crunchgen [-foq] [-h <makefile-header-name>] [-m <makefile>]", 190 " [-p <obj-prefix>] [-c <c-file-name>] [-e <exec-file>] <conffile>"); 191 exit(1); 192} 193 194 195/* 196 * ======================================================================== 197 * parse_conf_file subsystem 198 * 199 */ 200 201/* helper routines for parse_conf_file */ 202 203void parse_one_file(char *filename); 204void parse_line(char *line, int *fc, char **fv, int nf); 205void add_srcdirs(int argc, char **argv); 206void add_progs(int argc, char **argv); 207void add_link(int argc, char **argv); 208void add_libs(int argc, char **argv); 209void add_buildopts(int argc, char **argv); 210void add_special(int argc, char **argv); 211 212prog_t *find_prog(char *str); 213void add_prog(char *progname); 214 215 216void parse_conf_file(void) 217{ 218 if(!is_nonempty_file(infilename)) 219 errx(1, "fatal: input file \"%s\" not found", infilename); 220 parse_one_file(infilename); 221 if(readcache && is_nonempty_file(cachename)) { 222 reading_cache = 1; 223 parse_one_file(cachename); 224 } 225} 226 227 228void parse_one_file(char *filename) 229{ 230 char *fieldv[MAXFIELDS]; 231 int fieldc; 232 void (*f)(int c, char **v); 233 FILE *cf; 234 char line[MAXLINELEN]; 235 236 sprintf(line, "reading %s", filename); 237 status(line); 238 strcpy(curfilename, filename); 239 240 if((cf = fopen(curfilename, "r")) == NULL) { 241 warn("%s", curfilename); 242 goterror = 1; 243 return; 244 } 245 246 linenum = 0; 247 while(fgets(line, MAXLINELEN, cf) != NULL) { 248 linenum++; 249 parse_line(line, &fieldc, fieldv, MAXFIELDS); 250 if(fieldc < 1) continue; 251 if(!strcmp(fieldv[0], "srcdirs")) f = add_srcdirs; 252 else if(!strcmp(fieldv[0], "progs")) f = add_progs; 253 else if(!strcmp(fieldv[0], "ln")) f = add_link; 254 else if(!strcmp(fieldv[0], "libs")) f = add_libs; 255 else if(!strcmp(fieldv[0], "buildopts")) f = add_buildopts; 256 else if(!strcmp(fieldv[0], "special")) f = add_special; 257 else { 258 warnx("%s:%d: skipping unknown command `%s'", 259 curfilename, linenum, fieldv[0]); 260 goterror = 1; 261 continue; 262 } 263 if(fieldc < 2) { 264 warnx("%s:%d: %s command needs at least 1 argument, skipping", 265 curfilename, linenum, fieldv[0]); 266 goterror = 1; 267 continue; 268 } 269 f(fieldc, fieldv); 270 } 271 272 if(ferror(cf)) { 273 warn("%s", curfilename); 274 goterror = 1; 275 } 276 fclose(cf); 277} 278 279 280void parse_line(char *line, int *fc, char **fv, int nf) 281{ 282 char *p; 283 284 p = line; 285 *fc = 0; 286 while(1) { 287 while(isspace(*p)) p++; 288 if(*p == '\0' || *p == '#') break; 289 290 if(*fc < nf) fv[(*fc)++] = p; 291 while(*p && !isspace(*p) && *p != '#') p++; 292 if(*p == '\0' || *p == '#') break; 293 *p++ = '\0'; 294 } 295 if(*p) *p = '\0'; /* needed for '#' case */ 296} 297 298 299void add_srcdirs(int argc, char **argv) 300{ 301 int i; 302 303 for(i=1;i<argc;i++) { 304 if(is_dir(argv[i])) 305 add_string(&srcdirs, argv[i]); 306 else { 307 warnx("%s:%d: `%s' is not a directory, skipping it", 308 curfilename, linenum, argv[i]); 309 goterror = 1; 310 } 311 } 312} 313 314 315void add_progs(int argc, char **argv) 316{ 317 int i; 318 319 for(i=1;i<argc;i++) 320 add_prog(argv[i]); 321} 322 323 324void add_prog(char *progname) 325{ 326 prog_t *p1, *p2; 327 328 /* add to end, but be smart about dups */ 329 330 for(p1 = NULL, p2 = progs; p2 != NULL; p1 = p2, p2 = p2->next) 331 if(!strcmp(p2->name, progname)) return; 332 333 p2 = malloc(sizeof(prog_t)); 334 if(p2) { 335 memset(p2, 0, sizeof(prog_t)); 336 p2->name = strdup(progname); 337 } 338 if(!p2 || !p2->name) 339 out_of_memory(); 340 341 p2->next = NULL; 342 if(p1 == NULL) progs = p2; 343 else p1->next = p2; 344 345 p2->ident = p2->srcdir = p2->objdir = NULL; 346 p2->links = p2->objs = p2->keeplist = NULL; 347 p2->buildopts = NULL; 348 p2->goterror = 0; 349 if (list_mode) 350 printf("%s\n",progname); 351} 352 353 354void add_link(int argc, char **argv) 355{ 356 int i; 357 prog_t *p = find_prog(argv[1]); 358 359 if(p == NULL) { 360 warnx("%s:%d: no prog %s previously declared, skipping link", 361 curfilename, linenum, argv[1]); 362 goterror = 1; 363 return; 364 } 365 for(i=2;i<argc;i++) { 366 if (list_mode) 367 printf("%s\n",argv[i]); 368 add_string(&p->links, argv[i]); 369 } 370} 371 372 373void add_libs(int argc, char **argv) 374{ 375 int i; 376 377 for(i=1;i<argc;i++) 378 add_string(&libs, argv[i]); 379} 380 381 382void add_buildopts(int argc, char **argv) 383{ 384 int i; 385 386 for (i = 1; i < argc; i++) 387 add_string(&buildopts, argv[i]); 388} 389 390 391void add_special(int argc, char **argv) 392{ 393 int i; 394 prog_t *p = find_prog(argv[1]); 395 396 if(p == NULL) { 397 if(reading_cache) return; 398 warnx("%s:%d: no prog %s previously declared, skipping special", 399 curfilename, linenum, argv[1]); 400 goterror = 1; 401 return; 402 } 403 404 if(!strcmp(argv[2], "ident")) { 405 if(argc != 4) goto argcount; 406 if((p->ident = strdup(argv[3])) == NULL) 407 out_of_memory(); 408 } 409 else if(!strcmp(argv[2], "srcdir")) { 410 if(argc != 4) goto argcount; 411 if((p->srcdir = strdup(argv[3])) == NULL) 412 out_of_memory(); 413 } 414 else if(!strcmp(argv[2], "objdir")) { 415 if(argc != 4) goto argcount; 416 if((p->objdir = strdup(argv[3])) == NULL) 417 out_of_memory(); 418 } 419 else if(!strcmp(argv[2], "objs")) { 420 p->objs = NULL; 421 for(i=3;i<argc;i++) 422 add_string(&p->objs, argv[i]); 423 } 424 else if(!strcmp(argv[2], "objpaths")) { 425 p->objpaths = NULL; 426 for(i=3;i<argc;i++) 427 add_string(&p->objpaths, argv[i]); 428 } 429 else if(!strcmp(argv[2], "keep")) { 430 p->keeplist = NULL; 431 for(i=3;i<argc;i++) 432 add_string(&p->keeplist, argv[i]); 433 } 434 else if(!strcmp(argv[2], "objvar")) { 435 if(argc != 4) 436 goto argcount; 437 if((p->objvar = strdup(argv[3])) == NULL) 438 out_of_memory(); 439 } 440 else if (!strcmp(argv[2], "buildopts")) { 441 p->buildopts = NULL; 442 for (i = 3; i < argc; i++) 443 add_string(&p->buildopts, argv[i]); 444 } 445 else { 446 warnx("%s:%d: bad parameter name `%s', skipping line", 447 curfilename, linenum, argv[2]); 448 goterror = 1; 449 } 450 return; 451 452 453 argcount: 454 warnx("%s:%d: too %s arguments, expected \"special %s %s <string>\"", 455 curfilename, linenum, argc < 4? "few" : "many", argv[1], argv[2]); 456 goterror = 1; 457} 458 459 460prog_t *find_prog(char *str) 461{ 462 prog_t *p; 463 464 for(p = progs; p != NULL; p = p->next) 465 if(!strcmp(p->name, str)) return p; 466 467 return NULL; 468} 469 470 471/* 472 * ======================================================================== 473 * gen_outputs subsystem 474 * 475 */ 476 477/* helper subroutines */ 478 479void remove_error_progs(void); 480void fillin_program(prog_t *p); 481void gen_specials_cache(void); 482void gen_output_makefile(void); 483void gen_output_cfile(void); 484 485void fillin_program_objs(prog_t *p, char *path); 486void top_makefile_rules(FILE *outmk); 487void prog_makefile_rules(FILE *outmk, prog_t *p); 488void output_strlst(FILE *outf, strlst_t *lst); 489char *genident(char *str); 490char *dir_search(char *progname); 491 492 493void gen_outputs(void) 494{ 495 prog_t *p; 496 497 for(p = progs; p != NULL; p = p->next) 498 fillin_program(p); 499 500 remove_error_progs(); 501 gen_specials_cache(); 502 gen_output_cfile(); 503 gen_output_makefile(); 504 status(""); 505 fprintf(stderr, 506 "Run \"make -f %s\" to build crunched binary.\n", outmkname); 507} 508 509/* 510 * run the makefile for the program to find which objects are necessary 511 */ 512void fillin_program(prog_t *p) 513{ 514 char path[MAXPATHLEN]; 515 char *srcparent; 516 char line[MAXLINELEN]; 517 FILE *f; 518 519 snprintf(line, MAXLINELEN, "filling in parms for %s", p->name); 520 status(line); 521 522 if(!p->ident) 523 p->ident = genident(p->name); 524 if(!p->srcdir) { 525 srcparent = dir_search(p->name); 526 if(srcparent) 527 snprintf(line, MAXLINELEN, "%s/%s", srcparent, p->name); 528 if(is_dir(line)) 529 p->srcdir = strdup(line); 530 } 531 532 /* Determine the actual srcdir (maybe symlinked). */ 533 snprintf(line, MAXLINELEN, "cd %s && echo -n `/bin/pwd`", p->srcdir); 534 f = popen(line,"r"); 535 if (f) { 536 path[0] = '\0'; 537 fgets(path, sizeof path, f); 538 if (!pclose(f)) { 539 p->realsrcdir = strdup(path); 540 } 541 } 542 if (!p->realsrcdir) 543 errx(1, "Can't execute: %s\n", line); 544 545 /* Unless the option to make object files was specified the 546 * the objects will be built in the source directory unless 547 * an object directory already exists. 548 */ 549 if(!makeobj && !p->objdir && p->srcdir) { 550 snprintf(line, sizeof line, "%s/%s", objprefix, p->realsrcdir); 551 if (is_dir(line)) 552 p->objdir = strdup(line); 553 else 554 p->objdir = p->realsrcdir; 555 } 556/* 557 * XXX look for a Makefile.{name} in local directory first. 558 * This lets us override the original Makefile. 559 */ 560 snprintf(path, sizeof(path), "Makefile.%s", p->name); 561 if (is_nonempty_file(path)) { 562 snprintf(line, MAXLINELEN, "Using %s for %s", path, p->name); 563 status(line); 564 } else 565 if(p->srcdir) snprintf(path, sizeof(path), "%s/Makefile", p->srcdir); 566 if(!p->objs && p->srcdir && is_nonempty_file(path)) 567 fillin_program_objs(p, path); 568 569 if(!p->srcdir && verbose) 570 warnx("%s: %s: warning: could not find source directory", 571 infilename, p->name); 572 if(!p->objs && verbose) 573 warnx("%s: %s: warning: could not find any .o files", 574 infilename, p->name); 575} 576 577void fillin_program_objs(prog_t *p, char *path) 578{ 579 char *obj, *cp; 580 int rc; 581 FILE *f; 582 char *objvar="OBJS"; 583 strlst_t *s; 584 char line[MAXLINELEN]; 585 586 /* discover the objs from the srcdir Makefile */ 587 588 if((f = fopen(tempfname, "w")) == NULL) { 589 warn("%s", tempfname); 590 goterror = 1; 591 return; 592 } 593 if (p->objvar) 594 objvar = p->objvar ; 595 596 /* 597 * XXX include outhdrname (e.g. to contain Make variables) 598 */ 599 if (outhdrname[0] != '\0') 600 fprintf(f, ".include \"%s\"\n", outhdrname); 601 fprintf(f, ".include \"%s\"\n", path); 602 if (buildopts) { 603 fprintf(f, "BUILDOPTS+="); 604 output_strlst(f, buildopts); 605 } 606 fprintf(f, ".if defined(PROG) && !defined(%s)\n", objvar); 607 fprintf(f, "%s=${PROG}.o\n", objvar); 608 fprintf(f, ".endif\n"); 609 fprintf(f, "loop:\n\t@echo 'OBJS= '${%s}\n", objvar); 610 611 fprintf(f, "crunchgen_objs:\n\t@make -f %s $(BUILDOPTS) $(%s_OPTS)", 612 tempfname, p->ident); 613 for (s = p->buildopts; s != NULL; s = s->next) 614 fprintf(f, " %s", s->str); 615 fprintf(f, " loop\n"); 616 617 fclose(f); 618 619 snprintf(line, MAXLINELEN, "make -f %s crunchgen_objs 2>&1", tempfname); 620 if((f = popen(line, "r")) == NULL) { 621 warn("submake pipe"); 622 goterror = 1; 623 return; 624 } 625 626 while(fgets(line, MAXLINELEN, f)) { 627 if(strncmp(line, "OBJS= ", 6)) { 628 warnx("make error: %s", line); 629 goterror = 1; 630 continue; 631 } 632 cp = line + 6; 633 while(isspace(*cp)) cp++; 634 while(*cp) { 635 obj = cp; 636 while(*cp && !isspace(*cp)) cp++; 637 if(*cp) *cp++ = '\0'; 638 add_string(&p->objs, obj); 639 while(isspace(*cp)) cp++; 640 } 641 } 642 if((rc=pclose(f)) != 0) { 643 warnx("make error: make returned %d", rc); 644 goterror = 1; 645 } 646 unlink(tempfname); 647} 648 649void remove_error_progs(void) 650{ 651 prog_t *p1, *p2; 652 653 p1 = NULL; p2 = progs; 654 while(p2 != NULL) { 655 if(!p2->goterror) 656 p1 = p2, p2 = p2->next; 657 else { 658 /* delete it from linked list */ 659 warnx("%s: %s: ignoring program because of errors", 660 infilename, p2->name); 661 if(p1) p1->next = p2->next; 662 else progs = p2->next; 663 p2 = p2->next; 664 } 665 } 666} 667 668void gen_specials_cache(void) 669{ 670 FILE *cachef; 671 prog_t *p; 672 char line[MAXLINELEN]; 673 674 snprintf(line, MAXLINELEN, "generating %s", cachename); 675 status(line); 676 677 if((cachef = fopen(cachename, "w")) == NULL) { 678 warn("%s", cachename); 679 goterror = 1; 680 return; 681 } 682 683 fprintf(cachef, "# %s - parm cache generated from %s by crunchgen %s\n\n", 684 cachename, infilename, CRUNCH_VERSION); 685 686 for(p = progs; p != NULL; p = p->next) { 687 fprintf(cachef, "\n"); 688 if(p->srcdir) 689 fprintf(cachef, "special %s srcdir %s\n", p->name, p->srcdir); 690 if(p->objdir) 691 fprintf(cachef, "special %s objdir %s\n", p->name, p->objdir); 692 if(p->objs) { 693 fprintf(cachef, "special %s objs", p->name); 694 output_strlst(cachef, p->objs); 695 } 696 if(p->objpaths) { 697 fprintf(cachef, "special %s objpaths", p->name); 698 output_strlst(cachef, p->objpaths); 699 } 700 } 701 fclose(cachef); 702} 703 704 705void gen_output_makefile(void) 706{ 707 prog_t *p; 708 FILE *outmk; 709 char line[MAXLINELEN]; 710 711 snprintf(line, MAXLINELEN, "generating %s", outmkname); 712 status(line); 713 714 if((outmk = fopen(outmkname, "w")) == NULL) { 715 warn("%s", outmkname); 716 goterror = 1; 717 return; 718 } 719 720 fprintf(outmk, "# %s - generated from %s by crunchgen %s\n\n", 721 outmkname, infilename, CRUNCH_VERSION); 722 if (outhdrname[0] != '\0') 723 fprintf(outmk, ".include \"%s\"\n", outhdrname); 724 725 top_makefile_rules(outmk); 726 for(p = progs; p != NULL; p = p->next) 727 prog_makefile_rules(outmk, p); 728 729 fprintf(outmk, "\n# ========\n"); 730 fclose(outmk); 731} 732 733 734void gen_output_cfile(void) 735{ 736 extern char *crunched_skel[]; 737 char **cp; 738 FILE *outcf; 739 prog_t *p; 740 strlst_t *s; 741 char line[MAXLINELEN]; 742 743 snprintf(line, MAXLINELEN, "generating %s", outcfname); 744 status(line); 745 746 if((outcf = fopen(outcfname, "w")) == NULL) { 747 warn("%s", outcfname); 748 goterror = 1; 749 return; 750 } 751 752 fprintf(outcf, 753 "/* %s - generated from %s by crunchgen %s */\n", 754 outcfname, infilename, CRUNCH_VERSION); 755 756 fprintf(outcf, "#define EXECNAME \"%s\"\n", execfname); 757 for(cp = crunched_skel; *cp != NULL; cp++) 758 fprintf(outcf, "%s\n", *cp); 759 760 for(p = progs; p != NULL; p = p->next) 761 fprintf(outcf, "extern int _crunched_%s_stub();\n", p->ident); 762 763 fprintf(outcf, "\nstruct stub entry_points[] = {\n"); 764 for(p = progs; p != NULL; p = p->next) { 765 fprintf(outcf, "\t{ \"%s\", _crunched_%s_stub },\n", 766 p->name, p->ident); 767 for(s = p->links; s != NULL; s = s->next) 768 fprintf(outcf, "\t{ \"%s\", _crunched_%s_stub },\n", 769 s->str, p->ident); 770 } 771 772 fprintf(outcf, "\t{ EXECNAME, crunched_main },\n"); 773 fprintf(outcf, "\t{ NULL, NULL }\n};\n"); 774 fclose(outcf); 775} 776 777 778char *genident(char *str) 779{ 780 char *n,*s,*d; 781 782 /* 783 * generates a Makefile/C identifier from a program name, mapping '-' to 784 * '_' and ignoring all other non-identifier characters. This leads to 785 * programs named "foo.bar" and "foobar" to map to the same identifier. 786 */ 787 788 if((n = strdup(str)) == NULL) 789 return NULL; 790 for(d = s = n; *s != '\0'; s++) { 791 if(*s == '-') *d++ = '_'; 792 else if(*s == '_' || isalnum(*s)) *d++ = *s; 793 } 794 *d = '\0'; 795 return n; 796} 797 798 799char *dir_search(char *progname) 800{ 801 char path[MAXPATHLEN]; 802 strlst_t *dir; 803 804 for(dir=srcdirs; dir != NULL; dir=dir->next) { 805 snprintf(path, MAXPATHLEN, "%s/%s", dir->str, progname); 806 if(is_dir(path)) return dir->str; 807 } 808 return NULL; 809} 810 811 812void top_makefile_rules(FILE *outmk) 813{ 814 prog_t *p; 815 816 fprintf(outmk, "LIBS="); 817 output_strlst(outmk, libs); 818 819 if (makeobj) { 820 fprintf(outmk, "MAKEOBJDIRPREFIX?=%s\n", objprefix); 821 fprintf(outmk, "MAKE=env MAKEOBJDIRPREFIX=$(MAKEOBJDIRPREFIX) make\n"); 822 } else { 823 fprintf(outmk, "MAKE=make\n"); 824 } 825 826 if (buildopts) { 827 fprintf(outmk, "BUILDOPTS+="); 828 output_strlst(outmk, buildopts); 829 } 830 831 fprintf(outmk, "CRUNCHED_OBJS="); 832 for(p = progs; p != NULL; p = p->next) 833 fprintf(outmk, " %s.lo", p->name); 834 fprintf(outmk, "\n"); 835 836 fprintf(outmk, "SUBMAKE_TARGETS="); 837 for(p = progs; p != NULL; p = p->next) 838 fprintf(outmk, " %s_make", p->ident); 839 fprintf(outmk, "\nSUBCLEAN_TARGETS="); 840 for(p = progs; p != NULL; p = p->next) 841 fprintf(outmk, " %s_clean", p->ident); 842 fprintf(outmk, "\n\n"); 843 844 fprintf(outmk, "all: objs exe\nobjs: $(SUBMAKE_TARGETS)\n"); 845 fprintf(outmk, "exe: %s\n", execfname); 846 fprintf(outmk, "%s: %s.o $(CRUNCHED_OBJS)\n", 847 execfname, execfname); 848 fprintf(outmk, "\t$(CC) -static -o %s %s.o $(CRUNCHED_OBJS) $(LIBS)\n", 849 execfname, execfname); 850 fprintf(outmk, "\tstrip %s\n", execfname); 851 fprintf(outmk, "realclean: clean subclean\n"); 852 fprintf(outmk, "clean:\n\trm -f %s *.lo *.o *_stub.c\n", 853 execfname); 854 fprintf(outmk, "subclean: $(SUBCLEAN_TARGETS)\n"); 855} 856 857 858void prog_makefile_rules(FILE *outmk, prog_t *p) 859{ 860 strlst_t *lst; 861 862 fprintf(outmk, "\n# -------- %s\n\n", p->name); 863 864 if(p->srcdir && p->objs) { 865 fprintf(outmk, "%s_SRCDIR=%s\n", p->ident, p->srcdir); 866 fprintf(outmk, "%s_REALSRCDIR=%s\n", p->ident, p->realsrcdir); 867 868 fprintf(outmk, "%s_OBJDIR=", p->ident); 869 if (p->objdir) 870 fprintf(outmk, "%s", p->objdir); 871 else 872 fprintf(outmk, "$(MAKEOBJDIRPREFIX)/$(%s_REALSRCDIR)\n", 873 p->ident); 874 fprintf(outmk, "\n"); 875 876 fprintf(outmk, "%s_OBJS=", p->ident); 877 output_strlst(outmk, p->objs); 878 if (p->buildopts != NULL) { 879 fprintf(outmk, "%s_OPTS+=", p->ident); 880 output_strlst(outmk, p->buildopts); 881 } 882 fprintf(outmk, "%s_make:\n", p->ident); 883 fprintf(outmk, "\t(cd $(%s_SRCDIR) && ", p->ident); 884 if (makeobj) 885 fprintf(outmk, "$(MAKE) obj && "); 886 fprintf(outmk, "\\\n"); 887 fprintf(outmk, "\t\t$(MAKE) $(BUILDOPTS) $(%s_OPTS) depend && \\\n" 888 "\t\t$(MAKE) $(BUILDOPTS) $(%s_OPTS) $(%s_OBJS))\n", 889 p->ident, p->ident, p->ident); 890 fprintf(outmk, "%s_clean:\n", p->ident); 891 fprintf(outmk, "\t(cd $(%s_SRCDIR) && $(MAKE) clean)\n\n", p->ident); 892 } 893 else 894 fprintf(outmk, "%s_make:\n\t@echo \"** cannot make objs for %s\"\n\n", 895 p->ident, p->name); 896 897 fprintf(outmk, "%s_OBJPATHS=", p->ident); 898 if (p->objpaths) 899 output_strlst(outmk, p->objpaths); 900 else { 901 for (lst = p->objs; lst != NULL; lst = lst->next) { 902 fprintf(outmk, " $(%s_OBJDIR)/%s", p->ident, lst->str); 903 } 904 fprintf(outmk, "\n"); 905 } 906 907 fprintf(outmk, "%s_stub.c:\n", p->name); 908 fprintf(outmk, "\techo \"" 909 "int _crunched_%s_stub(int argc, char **argv, char **envp)" 910 "{return main(argc,argv,envp);}\" >%s_stub.c\n", 911 p->ident, p->name); 912 fprintf(outmk, "%s.lo: %s_stub.o $(%s_OBJPATHS)\n", 913 p->name, p->name, p->ident); 914 fprintf(outmk, "\tld -dc -r -o %s.lo %s_stub.o $(%s_OBJPATHS)\n", 915 p->name, p->name, p->ident); 916 fprintf(outmk, "\tcrunchide -k _crunched_%s_stub ", p->ident); 917 for(lst = p->keeplist; lst != NULL; lst = lst->next) 918 fprintf(outmk, "-k _%s ", lst->str); 919 fprintf(outmk, "%s.lo\n", p->name); 920} 921 922void output_strlst(FILE *outf, strlst_t *lst) 923{ 924 for(; lst != NULL; lst = lst->next) 925 fprintf(outf, " %s", lst->str); 926 fprintf(outf, "\n"); 927} 928 929 930/* 931 * ======================================================================== 932 * general library routines 933 * 934 */ 935 936void status(char *str) 937{ 938 static int lastlen = 0; 939 int len, spaces; 940 941 if(!verbose) return; 942 943 len = strlen(str); 944 spaces = lastlen - len; 945 if(spaces < 1) spaces = 1; 946 947 fprintf(stderr, " [%s]%*.*s\r", str, spaces, spaces, " "); 948 fflush(stderr); 949 lastlen = len; 950} 951 952 953void out_of_memory(void) 954{ 955 errx(1, "%s: %d: out of memory, stopping", infilename, linenum); 956} 957 958 959void add_string(strlst_t **listp, char *str) 960{ 961 strlst_t *p1, *p2; 962 963 /* add to end, but be smart about dups */ 964 965 for(p1 = NULL, p2 = *listp; p2 != NULL; p1 = p2, p2 = p2->next) 966 if(!strcmp(p2->str, str)) return; 967 968 p2 = malloc(sizeof(strlst_t)); 969 if(p2) { 970 p2->next = NULL ; 971 p2->str = strdup(str); 972 } 973 if(!p2 || !p2->str) 974 out_of_memory(); 975 976 if(p1 == NULL) *listp = p2; 977 else p1->next = p2; 978} 979 980 981int is_dir(char *pathname) 982{ 983 struct stat buf; 984 985 if(stat(pathname, &buf) == -1) 986 return 0; 987 return S_ISDIR(buf.st_mode); 988} 989 990int is_nonempty_file(char *pathname) 991{ 992 struct stat buf; 993 994 if(stat(pathname, &buf) == -1) 995 return 0; 996 997 return S_ISREG(buf.st_mode) && buf.st_size > 0; 998} 999