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