crunchgen.c revision 68569
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 68569 2000-11-10 15:21:37Z 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 *objdir; 69 char *objvar; /* Makefile variable to replace OBJS */ 70 strlst_t *objs, *objpaths; 71 strlst_t *buildopts; 72 strlst_t *keeplist; 73 strlst_t *links; 74 int goterror; 75} prog_t; 76 77 78/* global state */ 79 80strlst_t *srcdirs = NULL; 81strlst_t *libs = NULL; 82prog_t *progs = NULL; 83 84char line[MAXLINELEN]; 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 */ 90int linenum = -1; 91int goterror = 0; 92 93int verbose, readcache; /* options */ 94int reading_cache; 95int makeobj = 0; /* add 'make obj' rules to the makefile */ 96 97int list_mode; 98 99/* general library routines */ 100 101void status(char *str); 102void out_of_memory(void); 103void add_string(strlst_t **listp, char *str); 104int is_dir(char *pathname); 105int is_nonempty_file(char *pathname); 106 107/* helper routines for main() */ 108 109void usage(void); 110void parse_conf_file(void); 111void gen_outputs(void); 112 113 114int main(int argc, char **argv) 115{ 116 char *p; 117 int optc; 118 119 verbose = 1; 120 readcache = 1; 121 *outmkname = *outcfname = *execfname = '\0'; 122 123 while((optc = getopt(argc, argv, "lh:m:c:e:foq")) != -1) { 124 switch(optc) { 125 case 'f': readcache = 0; break; 126 case 'o': makeobj = 1; break; 127 case 'q': verbose = 0; break; 128 129 case 'm': strcpy(outmkname, optarg); break; 130 case 'h': strcpy(outhdrname, optarg); break; 131 case 'c': strcpy(outcfname, optarg); break; 132 case 'e': strcpy(execfname, optarg); break; 133 case 'l': list_mode++; verbose = 0; break; 134 135 case '?': 136 default: usage(); 137 } 138 } 139 140 argc -= optind; 141 argv += optind; 142 143 if(argc != 1) usage(); 144 145 /* 146 * generate filenames 147 */ 148 149 strcpy(infilename, argv[0]); 150 151 /* confname = `basename infilename .conf` */ 152 153 if((p=strrchr(infilename, '/')) != NULL) strcpy(confname, p+1); 154 else strcpy(confname, infilename); 155 if((p=strrchr(confname, '.')) != NULL && !strcmp(p, ".conf")) *p = '\0'; 156 157 if(!*outmkname) sprintf(outmkname, "%s.mk", confname); 158 if(!*outcfname) sprintf(outcfname, "%s.c", confname); 159 if(!*execfname) sprintf(execfname, "%s", confname); 160 161 sprintf(cachename, "%s.cache", confname); 162 sprintf(tempfname, ".tmp_%sXXXXXX", confname); 163 if(mktemp(tempfname) == NULL) { 164 perror(tempfname); 165 exit(1); 166 } 167 168 parse_conf_file(); 169 if (list_mode) 170 exit(goterror); 171 172 gen_outputs(); 173 174 exit(goterror); 175} 176 177 178void usage(void) 179{ 180 fprintf(stderr, "%s\n%s\n", 181 "usage: crunchgen [-foq] [-m <makefile>] [-c <c file>]", 182 " [-e <exec file>] <conffile>"); 183 exit(1); 184} 185 186 187/* 188 * ======================================================================== 189 * parse_conf_file subsystem 190 * 191 */ 192 193/* helper routines for parse_conf_file */ 194 195void parse_one_file(char *filename); 196void parse_line(char *line, int *fc, char **fv, int nf); 197void add_srcdirs(int argc, char **argv); 198void add_progs(int argc, char **argv); 199void add_link(int argc, char **argv); 200void add_libs(int argc, char **argv); 201void add_special(int argc, char **argv); 202 203prog_t *find_prog(char *str); 204void add_prog(char *progname); 205 206 207void parse_conf_file(void) 208{ 209 if(!is_nonempty_file(infilename)) 210 errx(1, "fatal: input file \"%s\" not found", infilename); 211 parse_one_file(infilename); 212 if(readcache && is_nonempty_file(cachename)) { 213 reading_cache = 1; 214 parse_one_file(cachename); 215 } 216} 217 218 219void parse_one_file(char *filename) 220{ 221 char *fieldv[MAXFIELDS]; 222 int fieldc; 223 void (*f)(int c, char **v); 224 FILE *cf; 225 226 sprintf(line, "reading %s", filename); 227 status(line); 228 strcpy(curfilename, filename); 229 230 if((cf = fopen(curfilename, "r")) == NULL) { 231 warn("%s", curfilename); 232 goterror = 1; 233 return; 234 } 235 236 linenum = 0; 237 while(fgets(line, MAXLINELEN, cf) != NULL) { 238 linenum++; 239 parse_line(line, &fieldc, fieldv, MAXFIELDS); 240 if(fieldc < 1) continue; 241 if(!strcmp(fieldv[0], "srcdirs")) f = add_srcdirs; 242 else if(!strcmp(fieldv[0], "progs")) f = add_progs; 243 else if(!strcmp(fieldv[0], "ln")) f = add_link; 244 else if(!strcmp(fieldv[0], "libs")) f = add_libs; 245 else if(!strcmp(fieldv[0], "special")) f = add_special; 246 else { 247 warnx("%s:%d: skipping unknown command `%s'", 248 curfilename, linenum, fieldv[0]); 249 goterror = 1; 250 continue; 251 } 252 if(fieldc < 2) { 253 warnx("%s:%d: %s command needs at least 1 argument, skipping", 254 curfilename, linenum, fieldv[0]); 255 goterror = 1; 256 continue; 257 } 258 f(fieldc, fieldv); 259 } 260 261 if(ferror(cf)) { 262 warn("%s", curfilename); 263 goterror = 1; 264 } 265 fclose(cf); 266} 267 268 269void parse_line(char *line, int *fc, char **fv, int nf) 270{ 271 char *p; 272 273 p = line; 274 *fc = 0; 275 while(1) { 276 while(isspace(*p)) p++; 277 if(*p == '\0' || *p == '#') break; 278 279 if(*fc < nf) fv[(*fc)++] = p; 280 while(*p && !isspace(*p) && *p != '#') p++; 281 if(*p == '\0' || *p == '#') break; 282 *p++ = '\0'; 283 } 284 if(*p) *p = '\0'; /* needed for '#' case */ 285} 286 287 288void add_srcdirs(int argc, char **argv) 289{ 290 int i; 291 292 for(i=1;i<argc;i++) { 293 if(is_dir(argv[i])) 294 add_string(&srcdirs, argv[i]); 295 else { 296 warnx("%s:%d: `%s' is not a directory, skipping it", 297 curfilename, linenum, argv[i]); 298 goterror = 1; 299 } 300 } 301} 302 303 304void add_progs(int argc, char **argv) 305{ 306 int i; 307 308 for(i=1;i<argc;i++) 309 add_prog(argv[i]); 310} 311 312 313void add_prog(char *progname) 314{ 315 prog_t *p1, *p2; 316 317 /* add to end, but be smart about dups */ 318 319 for(p1 = NULL, p2 = progs; p2 != NULL; p1 = p2, p2 = p2->next) 320 if(!strcmp(p2->name, progname)) return; 321 322 p2 = malloc(sizeof(prog_t)); 323 if(p2) { 324 memset(p2, 0, sizeof(prog_t)); 325 p2->name = strdup(progname); 326 } 327 if(!p2 || !p2->name) 328 out_of_memory(); 329 330 p2->next = NULL; 331 if(p1 == NULL) progs = p2; 332 else p1->next = p2; 333 334 p2->ident = p2->srcdir = p2->objdir = NULL; 335 p2->links = p2->objs = p2->keeplist = NULL; 336 p2->buildopts = NULL; 337 p2->goterror = 0; 338 if (list_mode) 339 printf("%s\n",progname); 340} 341 342 343void add_link(int argc, char **argv) 344{ 345 int i; 346 prog_t *p = find_prog(argv[1]); 347 348 if(p == NULL) { 349 warnx("%s:%d: no prog %s previously declared, skipping link", 350 curfilename, linenum, argv[1]); 351 goterror = 1; 352 return; 353 } 354 for(i=2;i<argc;i++) { 355 if (list_mode) 356 printf("%s\n",argv[i]); 357 add_string(&p->links, argv[i]); 358 } 359} 360 361 362void add_libs(int argc, char **argv) 363{ 364 int i; 365 366 for(i=1;i<argc;i++) 367 add_string(&libs, argv[i]); 368} 369 370 371void add_special(int argc, char **argv) 372{ 373 int i; 374 prog_t *p = find_prog(argv[1]); 375 376 if(p == NULL) { 377 if(reading_cache) return; 378 warnx("%s:%d: no prog %s previously declared, skipping special", 379 curfilename, linenum, argv[1]); 380 goterror = 1; 381 return; 382 } 383 384 if(!strcmp(argv[2], "ident")) { 385 if(argc != 4) goto argcount; 386 if((p->ident = strdup(argv[3])) == NULL) 387 out_of_memory(); 388 } 389 else if(!strcmp(argv[2], "srcdir")) { 390 if(argc != 4) goto argcount; 391 if((p->srcdir = strdup(argv[3])) == NULL) 392 out_of_memory(); 393 } 394 else if(!strcmp(argv[2], "objdir")) { 395 if(argc != 4) goto argcount; 396 if((p->objdir = strdup(argv[3])) == NULL) 397 out_of_memory(); 398 } 399 else if(!strcmp(argv[2], "objs")) { 400 p->objs = NULL; 401 for(i=3;i<argc;i++) 402 add_string(&p->objs, argv[i]); 403 } 404 else if(!strcmp(argv[2], "objpaths")) { 405 p->objpaths = NULL; 406 for(i=3;i<argc;i++) 407 add_string(&p->objpaths, argv[i]); 408 } 409 else if(!strcmp(argv[2], "keep")) { 410 p->keeplist = NULL; 411 for(i=3;i<argc;i++) 412 add_string(&p->keeplist, argv[i]); 413 } 414 else if(!strcmp(argv[2], "objvar")) { 415 if(argc != 4) 416 goto argcount; 417 if((p->objvar = strdup(argv[3])) == NULL) 418 out_of_memory(); 419 } 420 else if (!strcmp(argv[2], "buildopts")) { 421 p->buildopts = NULL; 422 for (i = 3; i < argc; i++) 423 add_string(&p->buildopts, argv[i]); 424 } 425 else { 426 warnx("%s:%d: bad parameter name `%s', skipping line", 427 curfilename, linenum, argv[2]); 428 goterror = 1; 429 } 430 return; 431 432 433 argcount: 434 warnx("%s:%d: too %s arguments, expected \"special %s %s <string>\"", 435 curfilename, linenum, argc < 4? "few" : "many", argv[1], argv[2]); 436 goterror = 1; 437} 438 439 440prog_t *find_prog(char *str) 441{ 442 prog_t *p; 443 444 for(p = progs; p != NULL; p = p->next) 445 if(!strcmp(p->name, str)) return p; 446 447 return NULL; 448} 449 450 451/* 452 * ======================================================================== 453 * gen_outputs subsystem 454 * 455 */ 456 457/* helper subroutines */ 458 459void remove_error_progs(void); 460void fillin_program(prog_t *p); 461void gen_specials_cache(void); 462void gen_output_makefile(void); 463void gen_output_cfile(void); 464 465void fillin_program_objs(prog_t *p, char *path); 466void top_makefile_rules(FILE *outmk); 467void prog_makefile_rules(FILE *outmk, prog_t *p); 468void output_strlst(FILE *outf, strlst_t *lst); 469char *genident(char *str); 470char *dir_search(char *progname); 471 472 473void gen_outputs(void) 474{ 475 prog_t *p; 476 477 for(p = progs; p != NULL; p = p->next) 478 fillin_program(p); 479 480 remove_error_progs(); 481 gen_specials_cache(); 482 gen_output_cfile(); 483 gen_output_makefile(); 484 status(""); 485 fprintf(stderr, 486 "Run \"make -f %s objs exe\" to build crunched binary.\n", 487 outmkname); 488} 489 490/* 491 * run the makefile for the program to find which objects are necessary 492 */ 493void fillin_program(prog_t *p) 494{ 495 char path[MAXPATHLEN]; 496 char *srcparent; 497 strlst_t *s; 498 499 sprintf(line, "filling in parms for %s", p->name); 500 status(line); 501 502 if(!p->ident) 503 p->ident = genident(p->name); 504 if(!p->srcdir) { 505 srcparent = dir_search(p->name); 506 if(srcparent) 507 sprintf(path, "%s/%s", srcparent, p->name); 508 if(is_dir(path)) 509 p->srcdir = strdup(path); 510 } 511 if(!p->objdir && p->srcdir) { 512 FILE *f; 513 514 sprintf(path, "cd %s && echo -n /usr/obj`/bin/pwd`", p->srcdir); 515 p->objdir = p->srcdir; 516 f = popen(path,"r"); 517 if (f) { 518 fgets(path,sizeof path, f); 519 if (!pclose(f)) { 520 if(is_dir(path)) 521 p->objdir = strdup(path); 522 } 523 } 524 } 525/* 526 * XXX look for a Makefile.{name} in local directory first. 527 * This lets us override the original Makefile. 528 */ 529 sprintf(path, "Makefile.%s", p->name); 530 if (is_nonempty_file(path)) { 531 sprintf(line, "Using %s for %s", path, p->name); 532 status(line); 533 } else 534 if(p->srcdir) sprintf(path, "%s/Makefile", p->srcdir); 535 if(!p->objs && p->srcdir && is_nonempty_file(path)) 536 fillin_program_objs(p, path); 537 538 if(!p->objpaths && p->objdir && p->objs) 539 for(s = p->objs; s != NULL; s = s->next) { 540 sprintf(line, "%s/%s", p->objdir, s->str); 541 add_string(&p->objpaths, line); 542 } 543 544 if(!p->srcdir && verbose) 545 warnx("%s: %s: warning: could not find source directory", 546 infilename, p->name); 547 if(!p->objs && verbose) 548 warnx("%s: %s: warning: could not find any .o files", 549 infilename, p->name); 550 551 if(!p->objpaths) { 552 warnx("%s: %s: error: no objpaths specified or calculated", 553 infilename, p->name); 554 p->goterror = goterror = 1; 555 } 556} 557 558void fillin_program_objs(prog_t *p, char *path) 559{ 560 char *obj, *cp; 561 int rc; 562 FILE *f; 563 char *objvar="OBJS"; 564 strlst_t *s; 565 566 /* discover the objs from the srcdir Makefile */ 567 568 if((f = fopen(tempfname, "w")) == NULL) { 569 warn("%s", tempfname); 570 goterror = 1; 571 return; 572 } 573 if (p->objvar) 574 objvar = p->objvar ; 575 576 /* 577 * XXX include outhdrname (e.g. to contain Make variables) 578 */ 579 if (outhdrname[0] != '\0') 580 fprintf(f, ".include \"%s\"\n", outhdrname); 581 fprintf(f, ".include \"%s\"\n", path); 582 fprintf(f, ".if defined(PROG) && !defined(%s)\n", objvar); 583 fprintf(f, "%s=${PROG}.o\n", objvar); 584 fprintf(f, ".endif\n"); 585 fprintf(f, "loop:\n\t@echo 'OBJS= '${%s}\n", objvar); 586 587 fprintf(f, "crunchgen_objs:\n\t@make -f %s $(OPTS) $(%s_OPTS)", 588 tempfname, p->ident); 589 for (s = p->buildopts; s != NULL; s = s->next) 590 fprintf(f, " %s", s->str); 591 fprintf(f, " loop\n"); 592 593 fclose(f); 594 595 sprintf(line, "make -f %s crunchgen_objs 2>&1", tempfname); 596 if((f = popen(line, "r")) == NULL) { 597 warn("submake pipe"); 598 goterror = 1; 599 return; 600 } 601 602 while(fgets(line, MAXLINELEN, f)) { 603 if(strncmp(line, "OBJS= ", 6)) { 604 warnx("make error: %s", line); 605 goterror = 1; 606 continue; 607 } 608 cp = line + 6; 609 while(isspace(*cp)) cp++; 610 while(*cp) { 611 obj = cp; 612 while(*cp && !isspace(*cp)) cp++; 613 if(*cp) *cp++ = '\0'; 614 add_string(&p->objs, obj); 615 while(isspace(*cp)) cp++; 616 } 617 } 618 if((rc=pclose(f)) != 0) { 619 warnx("make error: make returned %d", rc); 620 goterror = 1; 621 } 622 unlink(tempfname); 623} 624 625void remove_error_progs(void) 626{ 627 prog_t *p1, *p2; 628 629 p1 = NULL; p2 = progs; 630 while(p2 != NULL) { 631 if(!p2->goterror) 632 p1 = p2, p2 = p2->next; 633 else { 634 /* delete it from linked list */ 635 warnx("%s: %s: ignoring program because of errors", 636 infilename, p2->name); 637 if(p1) p1->next = p2->next; 638 else progs = p2->next; 639 p2 = p2->next; 640 } 641 } 642} 643 644void gen_specials_cache(void) 645{ 646 FILE *cachef; 647 prog_t *p; 648 649 sprintf(line, "generating %s", cachename); 650 status(line); 651 652 if((cachef = fopen(cachename, "w")) == NULL) { 653 warn("%s", cachename); 654 goterror = 1; 655 return; 656 } 657 658 fprintf(cachef, "# %s - parm cache generated from %s by crunchgen %s\n\n", 659 cachename, infilename, CRUNCH_VERSION); 660 661 for(p = progs; p != NULL; p = p->next) { 662 fprintf(cachef, "\n"); 663 if(p->srcdir) 664 fprintf(cachef, "special %s srcdir %s\n", p->name, p->srcdir); 665 if(p->objdir) 666 fprintf(cachef, "special %s objdir %s\n", p->name, p->objdir); 667 if(p->objs) { 668 fprintf(cachef, "special %s objs", p->name); 669 output_strlst(cachef, p->objs); 670 } 671 fprintf(cachef, "special %s objpaths", p->name); 672 output_strlst(cachef, p->objpaths); 673 } 674 fclose(cachef); 675} 676 677 678void gen_output_makefile(void) 679{ 680 prog_t *p; 681 FILE *outmk; 682 683 sprintf(line, "generating %s", outmkname); 684 status(line); 685 686 if((outmk = fopen(outmkname, "w")) == NULL) { 687 warn("%s", outmkname); 688 goterror = 1; 689 return; 690 } 691 692 fprintf(outmk, "# %s - generated from %s by crunchgen %s\n\n", 693 outmkname, infilename, CRUNCH_VERSION); 694 if (outhdrname[0] != '\0') 695 fprintf(outmk, ".include \"%s\"\n", outhdrname); 696 697 top_makefile_rules(outmk); 698 699 for(p = progs; p != NULL; p = p->next) 700 prog_makefile_rules(outmk, p); 701 702 fprintf(outmk, "\n# ========\n"); 703 fclose(outmk); 704} 705 706 707void gen_output_cfile(void) 708{ 709 extern char *crunched_skel[]; 710 char **cp; 711 FILE *outcf; 712 prog_t *p; 713 strlst_t *s; 714 715 sprintf(line, "generating %s", outcfname); 716 status(line); 717 718 if((outcf = fopen(outcfname, "w")) == NULL) { 719 warn("%s", outcfname); 720 goterror = 1; 721 return; 722 } 723 724 fprintf(outcf, 725 "/* %s - generated from %s by crunchgen %s */\n", 726 outcfname, infilename, CRUNCH_VERSION); 727 728 fprintf(outcf, "#define EXECNAME \"%s\"\n", execfname); 729 for(cp = crunched_skel; *cp != NULL; cp++) 730 fprintf(outcf, "%s\n", *cp); 731 732 for(p = progs; p != NULL; p = p->next) 733 fprintf(outcf, "extern int _crunched_%s_stub();\n", p->ident); 734 735 fprintf(outcf, "\nstruct stub entry_points[] = {\n"); 736 for(p = progs; p != NULL; p = p->next) { 737 fprintf(outcf, "\t{ \"%s\", _crunched_%s_stub },\n", 738 p->name, p->ident); 739 for(s = p->links; s != NULL; s = s->next) 740 fprintf(outcf, "\t{ \"%s\", _crunched_%s_stub },\n", 741 s->str, p->ident); 742 } 743 744 fprintf(outcf, "\t{ EXECNAME, crunched_main },\n"); 745 fprintf(outcf, "\t{ NULL, NULL }\n};\n"); 746 fclose(outcf); 747} 748 749 750char *genident(char *str) 751{ 752 char *n,*s,*d; 753 754 /* 755 * generates a Makefile/C identifier from a program name, mapping '-' to 756 * '_' and ignoring all other non-identifier characters. This leads to 757 * programs named "foo.bar" and "foobar" to map to the same identifier. 758 */ 759 760 if((n = strdup(str)) == NULL) 761 return NULL; 762 for(d = s = n; *s != '\0'; s++) { 763 if(*s == '-') *d++ = '_'; 764 else if(*s == '_' || isalnum(*s)) *d++ = *s; 765 } 766 *d = '\0'; 767 return n; 768} 769 770 771char *dir_search(char *progname) 772{ 773 char path[MAXPATHLEN]; 774 strlst_t *dir; 775 776 for(dir=srcdirs; dir != NULL; dir=dir->next) { 777 sprintf(path, "%s/%s", dir->str, progname); 778 if(is_dir(path)) return dir->str; 779 } 780 return NULL; 781} 782 783 784void top_makefile_rules(FILE *outmk) 785{ 786 prog_t *p; 787 788 fprintf(outmk, "LIBS="); 789 output_strlst(outmk, libs); 790 791 fprintf(outmk, "CRUNCHED_OBJS="); 792 for(p = progs; p != NULL; p = p->next) 793 fprintf(outmk, " %s.lo", p->name); 794 fprintf(outmk, "\n"); 795 796 fprintf(outmk, "SUBMAKE_TARGETS="); 797 for(p = progs; p != NULL; p = p->next) 798 fprintf(outmk, " %s_make", p->ident); 799 fprintf(outmk, "\nSUBCLEAN_TARGETS="); 800 for(p = progs; p != NULL; p = p->next) 801 fprintf(outmk, " %s_clean", p->ident); 802 fprintf(outmk, "\n\n"); 803 804 fprintf(outmk, "%s: %s.o $(CRUNCHED_OBJS)\n", 805 execfname, execfname); 806 fprintf(outmk, "\t$(CC) -static -o %s %s.o $(CRUNCHED_OBJS) $(LIBS)\n", 807 execfname, execfname); 808 fprintf(outmk, "\tstrip %s\n", execfname); 809 fprintf(outmk, "all: objs exe\nobjs: $(SUBMAKE_TARGETS)\n"); 810 fprintf(outmk, "exe: %s\n", execfname); 811 fprintf(outmk, "realclean: clean subclean\n"); 812 fprintf(outmk, "clean:\n\trm -f %s *.lo *.o *_stub.c\n", 813 execfname); 814 fprintf(outmk, "subclean: $(SUBCLEAN_TARGETS)\n"); 815} 816 817 818void prog_makefile_rules(FILE *outmk, prog_t *p) 819{ 820 strlst_t *lst; 821 822 fprintf(outmk, "\n# -------- %s\n\n", p->name); 823 824 if(p->srcdir && p->objs) { 825 fprintf(outmk, "%s_SRCDIR=%s\n", p->ident, p->srcdir); 826 fprintf(outmk, "%s_OBJS=", p->ident); 827 output_strlst(outmk, p->objs); 828 if (p->buildopts != NULL) { 829 fprintf(outmk, "%s_OPTS+=", p->ident); 830 output_strlst(outmk, p->buildopts); 831 } 832 fprintf(outmk, "%s_make:\n", p->ident); 833 fprintf(outmk, "\t(cd $(%s_SRCDIR) && ", p->ident); 834 if (makeobj) 835 fprintf(outmk, "make obj && "); 836 fprintf(outmk, "\\\n"); 837 fprintf(outmk, "\t\tmake $(OPTS) $(%s_OPTS) depend && \\\n" 838 "\t\tmake $(OPTS) $(%s_OPTS) $(%s_OBJS))\n", 839 p->ident, p->ident, p->ident); 840 fprintf(outmk, "%s_clean:\n", p->ident); 841 fprintf(outmk, "\t(cd $(%s_SRCDIR) && make clean)\n\n", p->ident); 842 } 843 else 844 fprintf(outmk, "%s_make:\n\t@echo \"** cannot make objs for %s\"\n\n", 845 p->ident, p->name); 846 847 fprintf(outmk, "%s_OBJPATHS=", p->ident); 848 output_strlst(outmk, p->objpaths); 849 850 fprintf(outmk, "%s_stub.c:\n", p->name); 851 fprintf(outmk, "\techo \"" 852 "int _crunched_%s_stub(int argc, char **argv, char **envp)" 853 "{return main(argc,argv,envp);}\" >%s_stub.c\n", 854 p->ident, p->name); 855 fprintf(outmk, "%s.lo: %s_stub.o $(%s_OBJPATHS)\n", 856 p->name, p->name, p->ident); 857 fprintf(outmk, "\tld -dc -r -o %s.lo %s_stub.o $(%s_OBJPATHS)\n", 858 p->name, p->name, p->ident); 859 fprintf(outmk, "\tcrunchide -k _crunched_%s_stub ", p->ident); 860 for(lst = p->keeplist; lst != NULL; lst = lst->next) 861 fprintf(outmk, "-k _%s ", lst->str); 862 fprintf(outmk, "%s.lo\n", p->name); 863} 864 865void output_strlst(FILE *outf, strlst_t *lst) 866{ 867 for(; lst != NULL; lst = lst->next) 868 fprintf(outf, " %s", lst->str); 869 fprintf(outf, "\n"); 870} 871 872 873/* 874 * ======================================================================== 875 * general library routines 876 * 877 */ 878 879void status(char *str) 880{ 881 static int lastlen = 0; 882 int len, spaces; 883 884 if(!verbose) return; 885 886 len = strlen(str); 887 spaces = lastlen - len; 888 if(spaces < 1) spaces = 1; 889 890 fprintf(stderr, " [%s]%*.*s\r", str, spaces, spaces, " "); 891 fflush(stderr); 892 lastlen = len; 893} 894 895 896void out_of_memory(void) 897{ 898 errx(1, "%s: %d: out of memory, stopping", infilename, linenum); 899} 900 901 902void add_string(strlst_t **listp, char *str) 903{ 904 strlst_t *p1, *p2; 905 906 /* add to end, but be smart about dups */ 907 908 for(p1 = NULL, p2 = *listp; p2 != NULL; p1 = p2, p2 = p2->next) 909 if(!strcmp(p2->str, str)) return; 910 911 p2 = malloc(sizeof(strlst_t)); 912 if(p2) { 913 memset(p2, 0, sizeof(strlst_t)); 914 p2->str = strdup(str); 915 } 916 if(!p2 || !p2->str) 917 out_of_memory(); 918 919 p2->next = NULL; 920 if(p1 == NULL) *listp = p2; 921 else p1->next = p2; 922} 923 924 925int is_dir(char *pathname) 926{ 927 struct stat buf; 928 929 if(stat(pathname, &buf) == -1) 930 return 0; 931 return S_ISDIR(buf.st_mode); 932} 933 934int is_nonempty_file(char *pathname) 935{ 936 struct stat buf; 937 938 if(stat(pathname, &buf) == -1) 939 return 0; 940 941 return S_ISREG(buf.st_mode) && buf.st_size > 0; 942} 943