crunchgen.c revision 68750
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 68750 2000-11-15 14:33:29Z 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 *buildopts = NULL; 81strlst_t *srcdirs = NULL; 82strlst_t *libs = NULL; 83prog_t *progs = NULL; 84 85char line[MAXLINELEN]; 86 87char confname[MAXPATHLEN], infilename[MAXPATHLEN]; 88char outmkname[MAXPATHLEN], outcfname[MAXPATHLEN], execfname[MAXPATHLEN]; 89char tempfname[MAXPATHLEN], cachename[MAXPATHLEN], curfilename[MAXPATHLEN]; 90char outhdrname[MAXPATHLEN] ; /* user-supplied header for *.mk */ 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 while((optc = getopt(argc, argv, "lh:m:c:e:foq")) != -1) { 125 switch(optc) { 126 case 'f': readcache = 0; break; 127 case 'o': makeobj = 1; break; 128 case 'q': verbose = 0; break; 129 130 case 'm': strcpy(outmkname, optarg); break; 131 case 'h': strcpy(outhdrname, optarg); break; 132 case 'c': strcpy(outcfname, optarg); break; 133 case 'e': strcpy(execfname, optarg); break; 134 case 'l': list_mode++; verbose = 0; break; 135 136 case '?': 137 default: usage(); 138 } 139 } 140 141 argc -= optind; 142 argv += optind; 143 144 if(argc != 1) usage(); 145 146 /* 147 * generate filenames 148 */ 149 150 strcpy(infilename, argv[0]); 151 152 /* confname = `basename infilename .conf` */ 153 154 if((p=strrchr(infilename, '/')) != NULL) strcpy(confname, p+1); 155 else strcpy(confname, infilename); 156 if((p=strrchr(confname, '.')) != NULL && !strcmp(p, ".conf")) *p = '\0'; 157 158 if(!*outmkname) sprintf(outmkname, "%s.mk", confname); 159 if(!*outcfname) sprintf(outcfname, "%s.c", confname); 160 if(!*execfname) sprintf(execfname, "%s", confname); 161 162 sprintf(cachename, "%s.cache", confname); 163 sprintf(tempfname, ".tmp_%sXXXXXX", confname); 164 if(mktemp(tempfname) == NULL) { 165 perror(tempfname); 166 exit(1); 167 } 168 169 parse_conf_file(); 170 if (list_mode) 171 exit(goterror); 172 173 gen_outputs(); 174 175 exit(goterror); 176} 177 178 179void usage(void) 180{ 181 fprintf(stderr, "%s\n%s\n", 182 "usage: crunchgen [-foq] [-m <makefile>] [-c <c file>]", 183 " [-e <exec file>] <conffile>"); 184 exit(1); 185} 186 187 188/* 189 * ======================================================================== 190 * parse_conf_file subsystem 191 * 192 */ 193 194/* helper routines for parse_conf_file */ 195 196void parse_one_file(char *filename); 197void parse_line(char *line, int *fc, char **fv, int nf); 198void add_srcdirs(int argc, char **argv); 199void add_progs(int argc, char **argv); 200void add_link(int argc, char **argv); 201void add_libs(int argc, char **argv); 202void add_buildopts(int argc, char **argv); 203void add_special(int argc, char **argv); 204 205prog_t *find_prog(char *str); 206void add_prog(char *progname); 207 208 209void parse_conf_file(void) 210{ 211 if(!is_nonempty_file(infilename)) 212 errx(1, "fatal: input file \"%s\" not found", infilename); 213 parse_one_file(infilename); 214 if(readcache && is_nonempty_file(cachename)) { 215 reading_cache = 1; 216 parse_one_file(cachename); 217 } 218} 219 220 221void parse_one_file(char *filename) 222{ 223 char *fieldv[MAXFIELDS]; 224 int fieldc; 225 void (*f)(int c, char **v); 226 FILE *cf; 227 228 sprintf(line, "reading %s", filename); 229 status(line); 230 strcpy(curfilename, filename); 231 232 if((cf = fopen(curfilename, "r")) == NULL) { 233 warn("%s", curfilename); 234 goterror = 1; 235 return; 236 } 237 238 linenum = 0; 239 while(fgets(line, MAXLINELEN, cf) != NULL) { 240 linenum++; 241 parse_line(line, &fieldc, fieldv, MAXFIELDS); 242 if(fieldc < 1) continue; 243 if(!strcmp(fieldv[0], "srcdirs")) f = add_srcdirs; 244 else if(!strcmp(fieldv[0], "progs")) f = add_progs; 245 else if(!strcmp(fieldv[0], "ln")) f = add_link; 246 else if(!strcmp(fieldv[0], "libs")) f = add_libs; 247 else if(!strcmp(fieldv[0], "buildopts")) f = add_buildopts; 248 else if(!strcmp(fieldv[0], "special")) f = add_special; 249 else { 250 warnx("%s:%d: skipping unknown command `%s'", 251 curfilename, linenum, fieldv[0]); 252 goterror = 1; 253 continue; 254 } 255 if(fieldc < 2) { 256 warnx("%s:%d: %s command needs at least 1 argument, skipping", 257 curfilename, linenum, fieldv[0]); 258 goterror = 1; 259 continue; 260 } 261 f(fieldc, fieldv); 262 } 263 264 if(ferror(cf)) { 265 warn("%s", curfilename); 266 goterror = 1; 267 } 268 fclose(cf); 269} 270 271 272void parse_line(char *line, int *fc, char **fv, int nf) 273{ 274 char *p; 275 276 p = line; 277 *fc = 0; 278 while(1) { 279 while(isspace(*p)) p++; 280 if(*p == '\0' || *p == '#') break; 281 282 if(*fc < nf) fv[(*fc)++] = p; 283 while(*p && !isspace(*p) && *p != '#') p++; 284 if(*p == '\0' || *p == '#') break; 285 *p++ = '\0'; 286 } 287 if(*p) *p = '\0'; /* needed for '#' case */ 288} 289 290 291void add_srcdirs(int argc, char **argv) 292{ 293 int i; 294 295 for(i=1;i<argc;i++) { 296 if(is_dir(argv[i])) 297 add_string(&srcdirs, argv[i]); 298 else { 299 warnx("%s:%d: `%s' is not a directory, skipping it", 300 curfilename, linenum, argv[i]); 301 goterror = 1; 302 } 303 } 304} 305 306 307void add_progs(int argc, char **argv) 308{ 309 int i; 310 311 for(i=1;i<argc;i++) 312 add_prog(argv[i]); 313} 314 315 316void add_prog(char *progname) 317{ 318 prog_t *p1, *p2; 319 320 /* add to end, but be smart about dups */ 321 322 for(p1 = NULL, p2 = progs; p2 != NULL; p1 = p2, p2 = p2->next) 323 if(!strcmp(p2->name, progname)) return; 324 325 p2 = malloc(sizeof(prog_t)); 326 if(p2) { 327 memset(p2, 0, sizeof(prog_t)); 328 p2->name = strdup(progname); 329 } 330 if(!p2 || !p2->name) 331 out_of_memory(); 332 333 p2->next = NULL; 334 if(p1 == NULL) progs = p2; 335 else p1->next = p2; 336 337 p2->ident = p2->srcdir = p2->objdir = NULL; 338 p2->links = p2->objs = p2->keeplist = NULL; 339 p2->buildopts = NULL; 340 p2->goterror = 0; 341 if (list_mode) 342 printf("%s\n",progname); 343} 344 345 346void add_link(int argc, char **argv) 347{ 348 int i; 349 prog_t *p = find_prog(argv[1]); 350 351 if(p == NULL) { 352 warnx("%s:%d: no prog %s previously declared, skipping link", 353 curfilename, linenum, argv[1]); 354 goterror = 1; 355 return; 356 } 357 for(i=2;i<argc;i++) { 358 if (list_mode) 359 printf("%s\n",argv[i]); 360 add_string(&p->links, argv[i]); 361 } 362} 363 364 365void add_libs(int argc, char **argv) 366{ 367 int i; 368 369 for(i=1;i<argc;i++) 370 add_string(&libs, argv[i]); 371} 372 373 374void add_buildopts(int argc, char **argv) 375{ 376 int i; 377 378 for (i = 1; i < argc; i++) 379 add_string(&buildopts, argv[i]); 380} 381 382 383void add_special(int argc, char **argv) 384{ 385 int i; 386 prog_t *p = find_prog(argv[1]); 387 388 if(p == NULL) { 389 if(reading_cache) return; 390 warnx("%s:%d: no prog %s previously declared, skipping special", 391 curfilename, linenum, argv[1]); 392 goterror = 1; 393 return; 394 } 395 396 if(!strcmp(argv[2], "ident")) { 397 if(argc != 4) goto argcount; 398 if((p->ident = strdup(argv[3])) == NULL) 399 out_of_memory(); 400 } 401 else if(!strcmp(argv[2], "srcdir")) { 402 if(argc != 4) goto argcount; 403 if((p->srcdir = strdup(argv[3])) == NULL) 404 out_of_memory(); 405 } 406 else if(!strcmp(argv[2], "objdir")) { 407 if(argc != 4) goto argcount; 408 if((p->objdir = strdup(argv[3])) == NULL) 409 out_of_memory(); 410 } 411 else if(!strcmp(argv[2], "objs")) { 412 p->objs = NULL; 413 for(i=3;i<argc;i++) 414 add_string(&p->objs, argv[i]); 415 } 416 else if(!strcmp(argv[2], "objpaths")) { 417 p->objpaths = NULL; 418 for(i=3;i<argc;i++) 419 add_string(&p->objpaths, argv[i]); 420 } 421 else if(!strcmp(argv[2], "keep")) { 422 p->keeplist = NULL; 423 for(i=3;i<argc;i++) 424 add_string(&p->keeplist, argv[i]); 425 } 426 else if(!strcmp(argv[2], "objvar")) { 427 if(argc != 4) 428 goto argcount; 429 if((p->objvar = strdup(argv[3])) == NULL) 430 out_of_memory(); 431 } 432 else if (!strcmp(argv[2], "buildopts")) { 433 p->buildopts = NULL; 434 for (i = 3; i < argc; i++) 435 add_string(&p->buildopts, argv[i]); 436 } 437 else { 438 warnx("%s:%d: bad parameter name `%s', skipping line", 439 curfilename, linenum, argv[2]); 440 goterror = 1; 441 } 442 return; 443 444 445 argcount: 446 warnx("%s:%d: too %s arguments, expected \"special %s %s <string>\"", 447 curfilename, linenum, argc < 4? "few" : "many", argv[1], argv[2]); 448 goterror = 1; 449} 450 451 452prog_t *find_prog(char *str) 453{ 454 prog_t *p; 455 456 for(p = progs; p != NULL; p = p->next) 457 if(!strcmp(p->name, str)) return p; 458 459 return NULL; 460} 461 462 463/* 464 * ======================================================================== 465 * gen_outputs subsystem 466 * 467 */ 468 469/* helper subroutines */ 470 471void remove_error_progs(void); 472void fillin_program(prog_t *p); 473void gen_specials_cache(void); 474void gen_output_makefile(void); 475void gen_output_cfile(void); 476 477void fillin_program_objs(prog_t *p, char *path); 478void top_makefile_rules(FILE *outmk); 479void prog_makefile_rules(FILE *outmk, prog_t *p); 480void output_strlst(FILE *outf, strlst_t *lst); 481char *genident(char *str); 482char *dir_search(char *progname); 483 484 485void gen_outputs(void) 486{ 487 prog_t *p; 488 489 for(p = progs; p != NULL; p = p->next) 490 fillin_program(p); 491 492 remove_error_progs(); 493 gen_specials_cache(); 494 gen_output_cfile(); 495 gen_output_makefile(); 496 status(""); 497 fprintf(stderr, 498 "Run \"make -f %s objs exe\" to build crunched binary.\n", 499 outmkname); 500} 501 502/* 503 * run the makefile for the program to find which objects are necessary 504 */ 505void fillin_program(prog_t *p) 506{ 507 char path[MAXPATHLEN]; 508 char *srcparent; 509 strlst_t *s; 510 511 sprintf(line, "filling in parms for %s", p->name); 512 status(line); 513 514 if(!p->ident) 515 p->ident = genident(p->name); 516 if(!p->srcdir) { 517 srcparent = dir_search(p->name); 518 if(srcparent) 519 sprintf(path, "%s/%s", srcparent, p->name); 520 if(is_dir(path)) 521 p->srcdir = strdup(path); 522 } 523 if(!p->objdir && p->srcdir) { 524 FILE *f; 525 526 sprintf(path, "cd %s && echo -n /usr/obj`/bin/pwd`", p->srcdir); 527 p->objdir = p->srcdir; 528 f = popen(path,"r"); 529 if (f) { 530 fgets(path,sizeof path, f); 531 if (!pclose(f)) { 532 if(is_dir(path)) 533 p->objdir = strdup(path); 534 } 535 } 536 } 537/* 538 * XXX look for a Makefile.{name} in local directory first. 539 * This lets us override the original Makefile. 540 */ 541 sprintf(path, "Makefile.%s", p->name); 542 if (is_nonempty_file(path)) { 543 sprintf(line, "Using %s for %s", path, p->name); 544 status(line); 545 } else 546 if(p->srcdir) sprintf(path, "%s/Makefile", p->srcdir); 547 if(!p->objs && p->srcdir && is_nonempty_file(path)) 548 fillin_program_objs(p, path); 549 550 if(!p->objpaths && p->objdir && p->objs) 551 for(s = p->objs; s != NULL; s = s->next) { 552 sprintf(line, "%s/%s", p->objdir, s->str); 553 add_string(&p->objpaths, line); 554 } 555 556 if(!p->srcdir && verbose) 557 warnx("%s: %s: warning: could not find source directory", 558 infilename, p->name); 559 if(!p->objs && verbose) 560 warnx("%s: %s: warning: could not find any .o files", 561 infilename, p->name); 562 563 if(!p->objpaths) { 564 warnx("%s: %s: error: no objpaths specified or calculated", 565 infilename, p->name); 566 p->goterror = goterror = 1; 567 } 568} 569 570void fillin_program_objs(prog_t *p, char *path) 571{ 572 char *obj, *cp; 573 int rc; 574 FILE *f; 575 char *objvar="OBJS"; 576 strlst_t *s; 577 578 /* discover the objs from the srcdir Makefile */ 579 580 if((f = fopen(tempfname, "w")) == NULL) { 581 warn("%s", tempfname); 582 goterror = 1; 583 return; 584 } 585 if (p->objvar) 586 objvar = p->objvar ; 587 588 /* 589 * XXX include outhdrname (e.g. to contain Make variables) 590 */ 591 if (outhdrname[0] != '\0') 592 fprintf(f, ".include \"%s\"\n", outhdrname); 593 fprintf(f, ".include \"%s\"\n", path); 594 if (buildopts) { 595 fprintf(f, "BUILDOPTS+="); 596 output_strlst(f, buildopts); 597 } 598 fprintf(f, ".if defined(PROG) && !defined(%s)\n", objvar); 599 fprintf(f, "%s=${PROG}.o\n", objvar); 600 fprintf(f, ".endif\n"); 601 fprintf(f, "loop:\n\t@echo 'OBJS= '${%s}\n", objvar); 602 603 fprintf(f, "crunchgen_objs:\n\t@make -f %s $(BUILDOPTS) $(%s_OPTS)", 604 tempfname, p->ident); 605 for (s = p->buildopts; s != NULL; s = s->next) 606 fprintf(f, " %s", s->str); 607 fprintf(f, " loop\n"); 608 609 fclose(f); 610 611 sprintf(line, "make -f %s crunchgen_objs 2>&1", tempfname); 612 if((f = popen(line, "r")) == NULL) { 613 warn("submake pipe"); 614 goterror = 1; 615 return; 616 } 617 618 while(fgets(line, MAXLINELEN, f)) { 619 if(strncmp(line, "OBJS= ", 6)) { 620 warnx("make error: %s", line); 621 goterror = 1; 622 continue; 623 } 624 cp = line + 6; 625 while(isspace(*cp)) cp++; 626 while(*cp) { 627 obj = cp; 628 while(*cp && !isspace(*cp)) cp++; 629 if(*cp) *cp++ = '\0'; 630 add_string(&p->objs, obj); 631 while(isspace(*cp)) cp++; 632 } 633 } 634 if((rc=pclose(f)) != 0) { 635 warnx("make error: make returned %d", rc); 636 goterror = 1; 637 } 638 unlink(tempfname); 639} 640 641void remove_error_progs(void) 642{ 643 prog_t *p1, *p2; 644 645 p1 = NULL; p2 = progs; 646 while(p2 != NULL) { 647 if(!p2->goterror) 648 p1 = p2, p2 = p2->next; 649 else { 650 /* delete it from linked list */ 651 warnx("%s: %s: ignoring program because of errors", 652 infilename, p2->name); 653 if(p1) p1->next = p2->next; 654 else progs = p2->next; 655 p2 = p2->next; 656 } 657 } 658} 659 660void gen_specials_cache(void) 661{ 662 FILE *cachef; 663 prog_t *p; 664 665 sprintf(line, "generating %s", cachename); 666 status(line); 667 668 if((cachef = fopen(cachename, "w")) == NULL) { 669 warn("%s", cachename); 670 goterror = 1; 671 return; 672 } 673 674 fprintf(cachef, "# %s - parm cache generated from %s by crunchgen %s\n\n", 675 cachename, infilename, CRUNCH_VERSION); 676 677 for(p = progs; p != NULL; p = p->next) { 678 fprintf(cachef, "\n"); 679 if(p->srcdir) 680 fprintf(cachef, "special %s srcdir %s\n", p->name, p->srcdir); 681 if(p->objdir) 682 fprintf(cachef, "special %s objdir %s\n", p->name, p->objdir); 683 if(p->objs) { 684 fprintf(cachef, "special %s objs", p->name); 685 output_strlst(cachef, p->objs); 686 } 687 fprintf(cachef, "special %s objpaths", p->name); 688 output_strlst(cachef, p->objpaths); 689 } 690 fclose(cachef); 691} 692 693 694void gen_output_makefile(void) 695{ 696 prog_t *p; 697 FILE *outmk; 698 699 sprintf(line, "generating %s", outmkname); 700 status(line); 701 702 if((outmk = fopen(outmkname, "w")) == NULL) { 703 warn("%s", outmkname); 704 goterror = 1; 705 return; 706 } 707 708 fprintf(outmk, "# %s - generated from %s by crunchgen %s\n\n", 709 outmkname, infilename, CRUNCH_VERSION); 710 if (outhdrname[0] != '\0') 711 fprintf(outmk, ".include \"%s\"\n", outhdrname); 712 713 top_makefile_rules(outmk); 714 715 for(p = progs; p != NULL; p = p->next) 716 prog_makefile_rules(outmk, p); 717 718 fprintf(outmk, "\n# ========\n"); 719 fclose(outmk); 720} 721 722 723void gen_output_cfile(void) 724{ 725 extern char *crunched_skel[]; 726 char **cp; 727 FILE *outcf; 728 prog_t *p; 729 strlst_t *s; 730 731 sprintf(line, "generating %s", outcfname); 732 status(line); 733 734 if((outcf = fopen(outcfname, "w")) == NULL) { 735 warn("%s", outcfname); 736 goterror = 1; 737 return; 738 } 739 740 fprintf(outcf, 741 "/* %s - generated from %s by crunchgen %s */\n", 742 outcfname, infilename, CRUNCH_VERSION); 743 744 fprintf(outcf, "#define EXECNAME \"%s\"\n", execfname); 745 for(cp = crunched_skel; *cp != NULL; cp++) 746 fprintf(outcf, "%s\n", *cp); 747 748 for(p = progs; p != NULL; p = p->next) 749 fprintf(outcf, "extern int _crunched_%s_stub();\n", p->ident); 750 751 fprintf(outcf, "\nstruct stub entry_points[] = {\n"); 752 for(p = progs; p != NULL; p = p->next) { 753 fprintf(outcf, "\t{ \"%s\", _crunched_%s_stub },\n", 754 p->name, p->ident); 755 for(s = p->links; s != NULL; s = s->next) 756 fprintf(outcf, "\t{ \"%s\", _crunched_%s_stub },\n", 757 s->str, p->ident); 758 } 759 760 fprintf(outcf, "\t{ EXECNAME, crunched_main },\n"); 761 fprintf(outcf, "\t{ NULL, NULL }\n};\n"); 762 fclose(outcf); 763} 764 765 766char *genident(char *str) 767{ 768 char *n,*s,*d; 769 770 /* 771 * generates a Makefile/C identifier from a program name, mapping '-' to 772 * '_' and ignoring all other non-identifier characters. This leads to 773 * programs named "foo.bar" and "foobar" to map to the same identifier. 774 */ 775 776 if((n = strdup(str)) == NULL) 777 return NULL; 778 for(d = s = n; *s != '\0'; s++) { 779 if(*s == '-') *d++ = '_'; 780 else if(*s == '_' || isalnum(*s)) *d++ = *s; 781 } 782 *d = '\0'; 783 return n; 784} 785 786 787char *dir_search(char *progname) 788{ 789 char path[MAXPATHLEN]; 790 strlst_t *dir; 791 792 for(dir=srcdirs; dir != NULL; dir=dir->next) { 793 sprintf(path, "%s/%s", dir->str, progname); 794 if(is_dir(path)) return dir->str; 795 } 796 return NULL; 797} 798 799 800void top_makefile_rules(FILE *outmk) 801{ 802 prog_t *p; 803 804 fprintf(outmk, "LIBS="); 805 output_strlst(outmk, libs); 806 807 if (buildopts) { 808 fprintf(outmk, "BUILDOPTS+="); 809 output_strlst(outmk, buildopts); 810 } 811 812 fprintf(outmk, "CRUNCHED_OBJS="); 813 for(p = progs; p != NULL; p = p->next) 814 fprintf(outmk, " %s.lo", p->name); 815 fprintf(outmk, "\n"); 816 817 fprintf(outmk, "SUBMAKE_TARGETS="); 818 for(p = progs; p != NULL; p = p->next) 819 fprintf(outmk, " %s_make", p->ident); 820 fprintf(outmk, "\nSUBCLEAN_TARGETS="); 821 for(p = progs; p != NULL; p = p->next) 822 fprintf(outmk, " %s_clean", p->ident); 823 fprintf(outmk, "\n\n"); 824 825 fprintf(outmk, "%s: %s.o $(CRUNCHED_OBJS)\n", 826 execfname, execfname); 827 fprintf(outmk, "\t$(CC) -static -o %s %s.o $(CRUNCHED_OBJS) $(LIBS)\n", 828 execfname, execfname); 829 fprintf(outmk, "\tstrip %s\n", execfname); 830 fprintf(outmk, "all: objs exe\nobjs: $(SUBMAKE_TARGETS)\n"); 831 fprintf(outmk, "exe: %s\n", execfname); 832 fprintf(outmk, "realclean: clean subclean\n"); 833 fprintf(outmk, "clean:\n\trm -f %s *.lo *.o *_stub.c\n", 834 execfname); 835 fprintf(outmk, "subclean: $(SUBCLEAN_TARGETS)\n"); 836} 837 838 839void prog_makefile_rules(FILE *outmk, prog_t *p) 840{ 841 strlst_t *lst; 842 843 fprintf(outmk, "\n# -------- %s\n\n", p->name); 844 845 if(p->srcdir && p->objs) { 846 fprintf(outmk, "%s_SRCDIR=%s\n", p->ident, p->srcdir); 847 fprintf(outmk, "%s_OBJS=", p->ident); 848 output_strlst(outmk, p->objs); 849 if (p->buildopts != NULL) { 850 fprintf(outmk, "%s_OPTS+=", p->ident); 851 output_strlst(outmk, p->buildopts); 852 } 853 fprintf(outmk, "%s_make:\n", p->ident); 854 fprintf(outmk, "\t(cd $(%s_SRCDIR) && ", p->ident); 855 if (makeobj) 856 fprintf(outmk, "make obj && "); 857 fprintf(outmk, "\\\n"); 858 fprintf(outmk, "\t\tmake $(BUILDOPTS) $(%s_OPTS) depend && \\\n" 859 "\t\tmake $(BUILDOPTS) $(%s_OPTS) $(%s_OBJS))\n", 860 p->ident, p->ident, p->ident); 861 fprintf(outmk, "%s_clean:\n", p->ident); 862 fprintf(outmk, "\t(cd $(%s_SRCDIR) && make clean)\n\n", p->ident); 863 } 864 else 865 fprintf(outmk, "%s_make:\n\t@echo \"** cannot make objs for %s\"\n\n", 866 p->ident, p->name); 867 868 fprintf(outmk, "%s_OBJPATHS=", p->ident); 869 output_strlst(outmk, p->objpaths); 870 871 fprintf(outmk, "%s_stub.c:\n", p->name); 872 fprintf(outmk, "\techo \"" 873 "int _crunched_%s_stub(int argc, char **argv, char **envp)" 874 "{return main(argc,argv,envp);}\" >%s_stub.c\n", 875 p->ident, p->name); 876 fprintf(outmk, "%s.lo: %s_stub.o $(%s_OBJPATHS)\n", 877 p->name, p->name, p->ident); 878 fprintf(outmk, "\tld -dc -r -o %s.lo %s_stub.o $(%s_OBJPATHS)\n", 879 p->name, p->name, p->ident); 880 fprintf(outmk, "\tcrunchide -k _crunched_%s_stub ", p->ident); 881 for(lst = p->keeplist; lst != NULL; lst = lst->next) 882 fprintf(outmk, "-k _%s ", lst->str); 883 fprintf(outmk, "%s.lo\n", p->name); 884} 885 886void output_strlst(FILE *outf, strlst_t *lst) 887{ 888 for(; lst != NULL; lst = lst->next) 889 fprintf(outf, " %s", lst->str); 890 fprintf(outf, "\n"); 891} 892 893 894/* 895 * ======================================================================== 896 * general library routines 897 * 898 */ 899 900void status(char *str) 901{ 902 static int lastlen = 0; 903 int len, spaces; 904 905 if(!verbose) return; 906 907 len = strlen(str); 908 spaces = lastlen - len; 909 if(spaces < 1) spaces = 1; 910 911 fprintf(stderr, " [%s]%*.*s\r", str, spaces, spaces, " "); 912 fflush(stderr); 913 lastlen = len; 914} 915 916 917void out_of_memory(void) 918{ 919 errx(1, "%s: %d: out of memory, stopping", infilename, linenum); 920} 921 922 923void add_string(strlst_t **listp, char *str) 924{ 925 strlst_t *p1, *p2; 926 927 /* add to end, but be smart about dups */ 928 929 for(p1 = NULL, p2 = *listp; p2 != NULL; p1 = p2, p2 = p2->next) 930 if(!strcmp(p2->str, str)) return; 931 932 p2 = malloc(sizeof(strlst_t)); 933 if(p2) { 934 memset(p2, 0, sizeof(strlst_t)); 935 p2->str = strdup(str); 936 } 937 if(!p2 || !p2->str) 938 out_of_memory(); 939 940 p2->next = NULL; 941 if(p1 == NULL) *listp = p2; 942 else p1->next = p2; 943} 944 945 946int is_dir(char *pathname) 947{ 948 struct stat buf; 949 950 if(stat(pathname, &buf) == -1) 951 return 0; 952 return S_ISDIR(buf.st_mode); 953} 954 955int is_nonempty_file(char *pathname) 956{ 957 struct stat buf; 958 959 if(stat(pathname, &buf) == -1) 960 return 0; 961 962 return S_ISREG(buf.st_mode) && buf.st_size > 0; 963} 964