1 /* $NetBSD: parse.c,v 1.119 2006/10/27 21:00:19 dsl Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: parse.c,v 1.119 2006/10/27 21:00:19 dsl Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 #if 0 77 static char sccsid[] = "@(#)parse.c 8.3 (Berkeley) 3/19/94"; 78 #else 79 __RCSID("$NetBSD: parse.c,v 1.119 2006/10/27 21:00:19 dsl Exp $"); 80 #endif 81 #endif /* not lint */ 82 #endif 83 84 /*- 85 * parse.c -- 86 * Functions to parse a makefile. 87 * 88 * One function, Parse_Init, must be called before any functions 89 * in this module are used. After that, the function Parse_File is the 90 * main entry point and controls most of the other functions in this 91 * module. 92 * 93 * Most important structures are kept in Lsts. Directories for 94 * the #include "..." function are kept in the 'parseIncPath' Lst, while 95 * those for the #include <...> are kept in the 'sysIncPath' Lst. The 96 * targets currently being defined are kept in the 'targets' Lst. 97 * 98 * The variables 'fname' and 'lineno' are used to track the name 99 * of the current file and the line number in that file so that error 100 * messages can be more meaningful. 101 * 102 * Interface: 103 * Parse_Init Initialization function which must be 104 * called before anything else in this module 105 * is used. 106 * 107 * Parse_End Cleanup the module 108 * 109 * Parse_File Function used to parse a makefile. It must 110 * be given the name of the file, which should 111 * already have been opened, and a function 112 * to call to read a character from the file. 113 * 114 * Parse_IsVar Returns TRUE if the given line is a 115 * variable assignment. Used by MainParseArgs 116 * to determine if an argument is a target 117 * or a variable assignment. Used internally 118 * for pretty much the same thing... 119 * 120 * Parse_Error Function called when an error occurs in 121 * parsing. Used by the variable and 122 * conditional modules. 123 * Parse_MainName Returns a Lst of the main target to create. 124 */ 125 126 #include <ctype.h> 127 #include <errno.h> 128 #include <stdarg.h> 129 #include <stdio.h> 130 131 #include "make.h" 132 #include "hash.h" 133 #include "dir.h" 134 #include "job.h" 135 #include "buf.h" 136 #include "pathnames.h" 137 138 /* 139 * These values are returned by ParseEOF to tell Parse_File whether to 140 * CONTINUE parsing, i.e. it had only reached the end of an include file, 141 * or if it's DONE. 142 */ 143 #define CONTINUE 1 144 #define DONE 0 145 static Lst targets; /* targets we're working on */ 146 #ifdef CLEANUP 147 static Lst targCmds; /* command lines for targets */ 148 #endif 149 static Boolean inLine; /* true if currently in a dependency 150 * line or its commands */ 151 typedef struct { 152 char *str; 153 char *ptr; 154 } PTR; 155 156 static int fatals = 0; 157 158 static GNode *mainNode; /* The main target to create. This is the 159 * first target on the first dependency 160 * line in the first makefile */ 161 typedef struct IFile { 162 char *fname; /* name of previous file */ 163 int lineno; /* saved line number */ 164 FILE * F; /* the open stream */ 165 PTR * P; /* the char pointer */ 166 } IFile; 167 168 static IFile curFile; 169 170 171 /* 172 * Definitions for handling #include specifications 173 */ 174 175 static Lst includes; /* stack of IFiles generated by 176 * #includes */ 177 Lst parseIncPath; /* list of directories for "..." includes */ 178 Lst sysIncPath; /* list of directories for <...> includes */ 179 Lst defIncPath; /* default directories for <...> includes */ 180 181 /*- 182 * specType contains the SPECial TYPE of the current target. It is 183 * Not if the target is unspecial. If it *is* special, however, the children 184 * are linked as children of the parent but not vice versa. This variable is 185 * set in ParseDoDependency 186 */ 187 typedef enum { 188 Begin, /* .BEGIN */ 189 Default, /* .DEFAULT */ 190 End, /* .END */ 191 Ignore, /* .IGNORE */ 192 Includes, /* .INCLUDES */ 193 Interrupt, /* .INTERRUPT */ 194 Libs, /* .LIBS */ 195 MFlags, /* .MFLAGS or .MAKEFLAGS */ 196 Main, /* .MAIN and we don't have anything user-specified to 197 * make */ 198 NoExport, /* .NOEXPORT */ 199 NoPath, /* .NOPATH */ 200 Not, /* Not special */ 201 NotParallel, /* .NOTPARALLEL */ 202 Null, /* .NULL */ 203 ExObjdir, /* .OBJDIR */ 204 Order, /* .ORDER */ 205 Parallel, /* .PARALLEL */ 206 ExPath, /* .PATH */ 207 Phony, /* .PHONY */ 208 #ifdef POSIX 209 Posix, /* .POSIX */ 210 #endif 211 Precious, /* .PRECIOUS */ 212 ExShell, /* .SHELL */ 213 Silent, /* .SILENT */ 214 SingleShell, /* .SINGLESHELL */ 215 Suffixes, /* .SUFFIXES */ 216 Wait, /* .WAIT */ 217 Attribute /* Generic attribute */ 218 } ParseSpecial; 219 220 static ParseSpecial specType; 221 static int waiting; 222 223 #define LPAREN '(' 224 #define RPAREN ')' 225 /* 226 * Predecessor node for handling .ORDER. Initialized to NILGNODE when .ORDER 227 * seen, then set to each successive source on the line. 228 */ 229 static GNode *predecessor; 230 231 /* 232 * The parseKeywords table is searched using binary search when deciding 233 * if a target or source is special. The 'spec' field is the ParseSpecial 234 * type of the keyword ("Not" if the keyword isn't special as a target) while 235 * the 'op' field is the operator to apply to the list of targets if the 236 * keyword is used as a source ("0" if the keyword isn't special as a source) 237 */ 238 static struct { 239 const char *name; /* Name of keyword */ 240 ParseSpecial spec; /* Type when used as a target */ 241 int op; /* Operator when used as a source */ 242 } parseKeywords[] = { 243 { ".BEGIN", Begin, 0 }, 244 { ".DEFAULT", Default, 0 }, 245 { ".END", End, 0 }, 246 { ".EXEC", Attribute, OP_EXEC }, 247 { ".IGNORE", Ignore, OP_IGNORE }, 248 { ".INCLUDES", Includes, 0 }, 249 { ".INTERRUPT", Interrupt, 0 }, 250 { ".INVISIBLE", Attribute, OP_INVISIBLE }, 251 { ".JOIN", Attribute, OP_JOIN }, 252 { ".LIBS", Libs, 0 }, 253 { ".MADE", Attribute, OP_MADE }, 254 { ".MAIN", Main, 0 }, 255 { ".MAKE", Attribute, OP_MAKE }, 256 { ".MAKEFLAGS", MFlags, 0 }, 257 { ".MFLAGS", MFlags, 0 }, 258 { ".NOPATH", NoPath, OP_NOPATH }, 259 { ".NOTMAIN", Attribute, OP_NOTMAIN }, 260 { ".NOTPARALLEL", NotParallel, 0 }, 261 { ".NO_PARALLEL", NotParallel, 0 }, 262 { ".NULL", Null, 0 }, 263 { ".OBJDIR", ExObjdir, 0 }, 264 { ".OPTIONAL", Attribute, OP_OPTIONAL }, 265 { ".ORDER", Order, 0 }, 266 { ".PARALLEL", Parallel, 0 }, 267 { ".PATH", ExPath, 0 }, 268 { ".PHONY", Phony, OP_PHONY }, 269 #ifdef POSIX 270 { ".POSIX", Posix, 0 }, 271 #endif 272 { ".PRECIOUS", Precious, OP_PRECIOUS }, 273 { ".RECURSIVE", Attribute, OP_MAKE }, 274 { ".SHELL", ExShell, 0 }, 275 { ".SILENT", Silent, OP_SILENT }, 276 { ".SINGLESHELL", SingleShell, 0 }, 277 { ".SUFFIXES", Suffixes, 0 }, 278 { ".USE", Attribute, OP_USE }, 279 { ".USEBEFORE", Attribute, OP_USEBEFORE }, 280 { ".WAIT", Wait, 0 }, 281 }; 282 283 /* 284 * Used by ParseDoSpecialSrc() 285 */ 286 typedef struct { 287 int op; 288 char *src; 289 Lst curSrcs; 290 } SpecialSrc; 291 292 static int ParseIsEscaped(const char *, const char *); 293 static void ParseErrorInternal(char *, size_t, int, const char *, ...) 294 __attribute__((__format__(__printf__, 4, 5))); 295 static void ParseVErrorInternal(char *, size_t, int, const char *, va_list) 296 __attribute__((__format__(__printf__, 4, 0))); 297 static int ParseFindKeyword(char *); 298 static int ParseLinkSrc(ClientData, ClientData); 299 static int ParseDoOp(ClientData, ClientData); 300 static int ParseAddDep(ClientData, ClientData); 301 static int ParseDoSpecialSrc(ClientData, ClientData); 302 static void ParseDoSrc(int, char *, Lst, Boolean); 303 static int ParseFindMain(ClientData, ClientData); 304 static int ParseAddDir(ClientData, ClientData); 305 static int ParseClearPath(ClientData, ClientData); 306 static void ParseDoDependency(char *); 307 static int ParseAddCmd(ClientData, ClientData); 308 static inline int ParseReadc(void); 309 static void ParseUnreadc(int); 310 static void ParseHasCommands(ClientData); 311 static void ParseDoInclude(char *); 312 static void ParseSetParseFile(char *); 313 #ifdef SYSVINCLUDE 314 static void ParseTraditionalInclude(char *); 315 #endif 316 static int ParseEOF(int); 317 static char *ParseReadLine(void); 318 static char *ParseSkipLine(int, int); 319 static void ParseFinishLine(void); 320 static void ParseMark(GNode *); 321 322 extern int maxJobs; 323 324 325 /*- 326 *---------------------------------------------------------------------- 327 * ParseIsEscaped -- 328 * Check if the current character is escaped on the current line 329 * 330 * Results: 331 * 0 if the character is not backslash escaped, 1 otherwise 332 * 333 * Side Effects: 334 * None 335 *---------------------------------------------------------------------- 336 */ 337 static int 338 ParseIsEscaped(const char *line, const char *c) 339 { 340 int active = 0; 341 for (;;) { 342 if (line == c) 343 return active; 344 if (*--c != '\\') 345 return active; 346 active = !active; 347 } 348 } 349 350 /*- 351 *---------------------------------------------------------------------- 352 * ParseFindKeyword -- 353 * Look in the table of keywords for one matching the given string. 354 * 355 * Input: 356 * str String to find 357 * 358 * Results: 359 * The index of the keyword, or -1 if it isn't there. 360 * 361 * Side Effects: 362 * None 363 *---------------------------------------------------------------------- 364 */ 365 static int 366 ParseFindKeyword(char *str) 367 { 368 int start, end, cur; 369 int diff; 370 371 start = 0; 372 end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1; 373 374 do { 375 cur = start + ((end - start) / 2); 376 diff = strcmp(str, parseKeywords[cur].name); 377 378 if (diff == 0) { 379 return (cur); 380 } else if (diff < 0) { 381 end = cur - 1; 382 } else { 383 start = cur + 1; 384 } 385 } while (start <= end); 386 return (-1); 387 } 388 389 /*- 390 * ParseVErrorInternal -- 391 * Error message abort function for parsing. Prints out the context 392 * of the error (line number and file) as well as the message with 393 * two optional arguments. 394 * 395 * Results: 396 * None 397 * 398 * Side Effects: 399 * "fatals" is incremented if the level is PARSE_FATAL. 400 */ 401 /* VARARGS */ 402 static void 403 ParseVErrorInternal(char *cfname, size_t clineno, int type, const char *fmt, 404 va_list ap) 405 { 406 static Boolean fatal_warning_error_printed = FALSE; 407 408 (void)fprintf(stderr, "%s: \"", progname); 409 410 if (*cfname != '/') { 411 char *cp; 412 const char *dir; 413 414 /* 415 * Nothing is more anoying than not knowing which Makefile 416 * is the culprit. 417 */ 418 dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp); 419 if (dir == NULL || *dir == '\0' || 420 (*dir == '.' && dir[1] == '\0')) 421 dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp); 422 if (dir == NULL) 423 dir = "."; 424 425 (void)fprintf(stderr, "%s/%s", dir, cfname); 426 } else 427 (void)fprintf(stderr, "%s", cfname); 428 429 (void)fprintf(stderr, "\" line %d: ", (int)clineno); 430 if (type == PARSE_WARNING) 431 (void)fprintf(stderr, "warning: "); 432 (void)vfprintf(stderr, fmt, ap); 433 (void)fprintf(stderr, "\n"); 434 (void)fflush(stderr); 435 if (type == PARSE_FATAL || parseWarnFatal) 436 fatals += 1; 437 if (parseWarnFatal && !fatal_warning_error_printed) { 438 Error("parsing warnings being treated as errors"); 439 fatal_warning_error_printed = TRUE; 440 } 441 } 442 443 /*- 444 * ParseErrorInternal -- 445 * Error function 446 * 447 * Results: 448 * None 449 * 450 * Side Effects: 451 * None 452 */ 453 /* VARARGS */ 454 static void 455 ParseErrorInternal(char *cfname, size_t clineno, int type, const char *fmt, ...) 456 { 457 va_list ap; 458 459 va_start(ap, fmt); 460 ParseVErrorInternal(cfname, clineno, type, fmt, ap); 461 va_end(ap); 462 } 463 464 /*- 465 * Parse_Error -- 466 * External interface to ParseErrorInternal; uses the default filename 467 * Line number. 468 * 469 * Results: 470 * None 471 * 472 * Side Effects: 473 * None 474 */ 475 /* VARARGS */ 476 void 477 Parse_Error(int type, const char *fmt, ...) 478 { 479 va_list ap; 480 481 va_start(ap, fmt); 482 ParseVErrorInternal(curFile.fname, curFile.lineno, type, fmt, ap); 483 va_end(ap); 484 } 485 486 /*- 487 *--------------------------------------------------------------------- 488 * ParseLinkSrc -- 489 * Link the parent node to its new child. Used in a Lst_ForEach by 490 * ParseDoDependency. If the specType isn't 'Not', the parent 491 * isn't linked as a parent of the child. 492 * 493 * Input: 494 * pgnp The parent node 495 * cgpn The child node 496 * 497 * Results: 498 * Always = 0 499 * 500 * Side Effects: 501 * New elements are added to the parents list of cgn and the 502 * children list of cgn. the unmade field of pgn is updated 503 * to reflect the additional child. 504 *--------------------------------------------------------------------- 505 */ 506 static int 507 ParseLinkSrc(ClientData pgnp, ClientData cgnp) 508 { 509 GNode *pgn = (GNode *)pgnp; 510 GNode *cgn = (GNode *)cgnp; 511 512 if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts)) 513 pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts)); 514 (void)Lst_AtEnd(pgn->children, cgn); 515 if (specType == Not) 516 (void)Lst_AtEnd(cgn->parents, pgn); 517 pgn->unmade += 1; 518 if (DEBUG(PARSE)) { 519 fprintf(debug_file, "# ParseLinkSrc: added child %s - %s\n", pgn->name, cgn->name); 520 Targ_PrintNode(pgn, 0); 521 Targ_PrintNode(cgn, 0); 522 } 523 return (0); 524 } 525 526 /*- 527 *--------------------------------------------------------------------- 528 * ParseDoOp -- 529 * Apply the parsed operator to the given target node. Used in a 530 * Lst_ForEach call by ParseDoDependency once all targets have 531 * been found and their operator parsed. If the previous and new 532 * operators are incompatible, a major error is taken. 533 * 534 * Input: 535 * gnp The node to which the operator is to be applied 536 * opp The operator to apply 537 * 538 * Results: 539 * Always 0 540 * 541 * Side Effects: 542 * The type field of the node is altered to reflect any new bits in 543 * the op. 544 *--------------------------------------------------------------------- 545 */ 546 static int 547 ParseDoOp(ClientData gnp, ClientData opp) 548 { 549 GNode *gn = (GNode *)gnp; 550 int op = *(int *)opp; 551 /* 552 * If the dependency mask of the operator and the node don't match and 553 * the node has actually had an operator applied to it before, and 554 * the operator actually has some dependency information in it, complain. 555 */ 556 if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) && 557 !OP_NOP(gn->type) && !OP_NOP(op)) 558 { 559 Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name); 560 return (1); 561 } 562 563 if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) { 564 /* 565 * If the node was the object of a :: operator, we need to create a 566 * new instance of it for the children and commands on this dependency 567 * line. The new instance is placed on the 'cohorts' list of the 568 * initial one (note the initial one is not on its own cohorts list) 569 * and the new instance is linked to all parents of the initial 570 * instance. 571 */ 572 GNode *cohort; 573 574 /* 575 * Propagate copied bits to the initial node. They'll be propagated 576 * back to the rest of the cohorts later. 577 */ 578 gn->type |= op & ~OP_OPMASK; 579 580 cohort = Targ_NewGN(gn->name); 581 /* 582 * Make the cohort invisible as well to avoid duplicating it into 583 * other variables. True, parents of this target won't tend to do 584 * anything with their local variables, but better safe than 585 * sorry. (I think this is pointless now, since the relevant list 586 * traversals will no longer see this node anyway. -mycroft) 587 */ 588 cohort->type = op | OP_INVISIBLE; 589 (void)Lst_AtEnd(gn->cohorts, cohort); 590 cohort->centurion = gn; 591 gn->unmade_cohorts += 1; 592 } else { 593 /* 594 * We don't want to nuke any previous flags (whatever they were) so we 595 * just OR the new operator into the old 596 */ 597 gn->type |= op; 598 } 599 600 return (0); 601 } 602 603 /*- 604 *--------------------------------------------------------------------- 605 * ParseAddDep -- 606 * Check if the pair of GNodes given needs to be synchronized. 607 * This has to be when two nodes are on different sides of a 608 * .WAIT directive. 609 * 610 * Results: 611 * Returns 1 if the two targets need to be ordered, 0 otherwise. 612 * If it returns 1, the search can stop 613 * 614 * Side Effects: 615 * A dependency can be added between the two nodes. 616 * The dependency is tagged for recursive addition to 617 * all children of sp. 618 * 619 *--------------------------------------------------------------------- 620 */ 621 static int 622 ParseAddDep(ClientData pp, ClientData sp) 623 { 624 GNode *p = (GNode *)pp; 625 GNode *s = (GNode *)sp; 626 627 if (DEBUG(PARSE)) 628 fprintf(debug_file, "ParseAddDep: %p(%s):%d %p(%s):%d\n", 629 p, p->name, p->order, s, s->name, s->order); 630 if (p->order >= s->order) 631 return 1; 632 633 /* 634 * XXX: This can cause loops, and loops can cause unmade targets, 635 * but checking is tedious, and the debugging output can show the 636 * problem 637 */ 638 (void)Lst_AtEnd(p->successors, s); 639 (void)Lst_AtEnd(s->preds, p); 640 (void)Lst_AtEnd(s->recpreds, p); 641 if (DEBUG(PARSE)) { 642 fprintf(debug_file, "# ParseAddDep: added .WAIT dependency %s - %s\n", 643 p->name, s->name); 644 Targ_PrintNode(p, 0); 645 Targ_PrintNode(s, 0); 646 } 647 return 0; 648 } 649 650 /* - 651 *--------------------------------------------------------------------- 652 * ParseDoSpecialSrc -- 653 * ParseDoSrc struck an unexpanded variable in a src. 654 * The most likely reason is a src that refers to .TARGET or 655 * .PREFIX so we get called to set those for each target 656 * and then call ParseDoSrc again to do the real work. 657 * 658 * Input: 659 * tp A target GNode * 660 * sp A SpecialSrc * which contains the args we need 661 * for ParseDoSrc. 662 * 663 * Results: 664 * Goodness 665 * 666 * Side Effects: 667 * The target GNode will have .TARGET and .PREFIX set, this seems 668 * harmless. 669 */ 670 static int 671 ParseDoSpecialSrc(ClientData tp, ClientData sp) 672 { 673 GNode *tn = (GNode *)tp; 674 GNode *gn; 675 SpecialSrc *ss = (SpecialSrc *)sp; 676 char *cp; 677 char *cp2; 678 char *pref; 679 680 /* 681 * If the target is a suffix rule, leave it alone. 682 */ 683 if (Suff_IsTransform(tn->name)) { 684 ParseDoSrc(ss->op, ss->src, ss->curSrcs, FALSE); /* don't come back */ 685 return 0; 686 } 687 688 /* Expand the variables that depend on the current target just in case */ 689 Var_Set(TARGET, tn->name, tn, 0); 690 691 /* Get the filename part of the target name, excluding all suffixes */ 692 if ((pref = strrchr(tn->name, '/'))) 693 pref++; 694 else 695 pref = tn->name; 696 if ((cp2 = strchr(pref, '.')) > pref) { 697 cp = estrdup(pref); 698 cp[cp2 - pref] = '\0'; 699 Var_Set(PREFIX, cp, tn, 0); 700 free(cp); 701 } else 702 Var_Set(PREFIX, pref, tn, 0); 703 704 /* Now we can expant the name itself */ 705 cp = Var_Subst(NULL, ss->src, tn, FALSE); 706 /* XXX, better not need to have $ in a filesname! */ 707 if (strchr(cp, '$')) { 708 Parse_Error(PARSE_WARNING, "Cannot resolve '%s' here", ss->src); 709 ParseDoSrc(ss->op, ss->src, ss->curSrcs, FALSE); /* don't come back */ 710 return 1; /* stop list traversal */ 711 } 712 713 /* 714 * We don't want to make every target dependent on sources for 715 * other targets. This is the bit of ParseDoSrc which is relevant. 716 * The main difference is we don't link the resolved src to all targets. 717 */ 718 gn = Targ_FindNode(cp, TARG_CREATE); 719 if (ss->op) { 720 gn->type |= ss->op; 721 } else { 722 ParseLinkSrc(tn, gn); 723 } 724 if (DEBUG(PARSE)) 725 fprintf(debug_file, "ParseDoSpecialSrc: set %p(%s):%d (was %d)\n", 726 gn, gn->name, waiting, gn->order); 727 gn->order = waiting; 728 (void)Lst_AtEnd(ss->curSrcs, gn); 729 if (waiting) 730 Lst_ForEach(ss->curSrcs, ParseAddDep, gn); 731 return 0; 732 } 733 734 735 /*- 736 *--------------------------------------------------------------------- 737 * ParseDoSrc -- 738 * Given the name of a source, figure out if it is an attribute 739 * and apply it to the targets if it is. Else decide if there is 740 * some attribute which should be applied *to* the source because 741 * of some special target and apply it if so. Otherwise, make the 742 * source be a child of the targets in the list 'targets' 743 * 744 * Input: 745 * tOp operator (if any) from special targets 746 * src name of the source to handle 747 * curSrcs List of all sources to wait for 748 * resolve boolean - should we try and resolve .TARGET refs. 749 * 750 * Results: 751 * None 752 * 753 * Side Effects: 754 * Operator bits may be added to the list of targets or to the source. 755 * The targets may have a new source added to their lists of children. 756 *--------------------------------------------------------------------- 757 */ 758 static void 759 ParseDoSrc(int tOp, char *src, Lst curSrcs, Boolean resolve) 760 { 761 GNode *gn = NULL; 762 763 if (*src == '.' && isupper ((unsigned char)src[1])) { 764 int keywd = ParseFindKeyword(src); 765 if (keywd != -1) { 766 int op = parseKeywords[keywd].op; 767 if (op != 0) { 768 Lst_ForEach(targets, ParseDoOp, &op); 769 return; 770 } 771 if (parseKeywords[keywd].spec == Wait) { 772 waiting++; 773 return; 774 } 775 } 776 } 777 778 switch (specType) { 779 case Main: 780 /* 781 * If we have noted the existence of a .MAIN, it means we need 782 * to add the sources of said target to the list of things 783 * to create. The string 'src' is likely to be free, so we 784 * must make a new copy of it. Note that this will only be 785 * invoked if the user didn't specify a target on the command 786 * line. This is to allow #ifmake's to succeed, or something... 787 */ 788 (void)Lst_AtEnd(create, estrdup(src)); 789 /* 790 * Add the name to the .TARGETS variable as well, so the user can 791 * employ that, if desired. 792 */ 793 Var_Append(".TARGETS", src, VAR_GLOBAL); 794 return; 795 796 case Order: 797 /* 798 * Create proper predecessor/successor links between the previous 799 * source and the current one. 800 */ 801 gn = Targ_FindNode(src, TARG_CREATE); 802 if (predecessor != NILGNODE) { 803 (void)Lst_AtEnd(predecessor->successors, gn); 804 (void)Lst_AtEnd(gn->preds, predecessor); 805 if (DEBUG(PARSE)) { 806 fprintf(debug_file, "# ParseDoSrc: added Order dependency %s - %s\n", 807 predecessor->name, gn->name); 808 Targ_PrintNode(predecessor, 0); 809 Targ_PrintNode(gn, 0); 810 } 811 } 812 /* 813 * The current source now becomes the predecessor for the next one. 814 */ 815 predecessor = gn; 816 break; 817 818 default: 819 /* 820 * If the source is not an attribute, we need to find/create 821 * a node for it. After that we can apply any operator to it 822 * from a special target or link it to its parents, as 823 * appropriate. 824 * 825 * In the case of a source that was the object of a :: operator, 826 * the attribute is applied to all of its instances (as kept in 827 * the 'cohorts' list of the node) or all the cohorts are linked 828 * to all the targets. 829 */ 830 if (resolve && strchr(src, '$')) { 831 /* 832 * If the 'src' needs expanding, and we have a .WAIT in the 833 * list of sources, then we expand 'src' with respect to each 834 * of the targets and add the modified nodes separately to 835 * their own target. 836 * This only makes a difference if the 'src' has a dynamic 837 * dependency against .TARGET (etc), and even then it is probably 838 * not a very useful optimisation. 839 */ 840 SpecialSrc ss; 841 842 ss.op = tOp; 843 ss.src = src; 844 ss.curSrcs = curSrcs; 845 846 /* 847 * If src cannot be fully resolved, we'll be called again 848 * with resolve==FALSE. 849 */ 850 Lst_ForEach(targets, ParseDoSpecialSrc, &ss); 851 return; 852 } 853 854 /* Find/create the 'src' node and attach to all targets */ 855 gn = Targ_FindNode(src, TARG_CREATE); 856 if (tOp) { 857 gn->type |= tOp; 858 } else { 859 Lst_ForEach(targets, ParseLinkSrc, gn); 860 } 861 break; 862 } 863 864 if (DEBUG(PARSE)) 865 fprintf(debug_file, "ParseDoSrc: set %p(%s):%d (was %d)\n", 866 gn, gn->name, waiting, gn->order); 867 gn->order = waiting; 868 869 /* Keep a list of the 'src' on this dependence line for .WAIT below */ 870 (void)Lst_AtEnd(curSrcs, gn); 871 872 /* 873 * If we have passed a .WAIT, then make this 'src' depend on all the 874 * earlier 'src' of the current dependency line that preceed the last 875 * .WAIT directive. 876 */ 877 if (waiting) 878 Lst_ForEach(curSrcs, ParseAddDep, gn); 879 } 880 881 /*- 882 *----------------------------------------------------------------------- 883 * ParseFindMain -- 884 * Find a real target in the list and set it to be the main one. 885 * Called by ParseDoDependency when a main target hasn't been found 886 * yet. 887 * 888 * Input: 889 * gnp Node to examine 890 * 891 * Results: 892 * 0 if main not found yet, 1 if it is. 893 * 894 * Side Effects: 895 * mainNode is changed and Targ_SetMain is called. 896 * 897 *----------------------------------------------------------------------- 898 */ 899 static int 900 ParseFindMain(ClientData gnp, ClientData dummy) 901 { 902 GNode *gn = (GNode *)gnp; 903 if ((gn->type & OP_NOTARGET) == 0) { 904 mainNode = gn; 905 Targ_SetMain(gn); 906 return (dummy ? 1 : 1); 907 } else { 908 return (dummy ? 0 : 0); 909 } 910 } 911 912 /*- 913 *----------------------------------------------------------------------- 914 * ParseAddDir -- 915 * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going 916 * 917 * Results: 918 * === 0 919 * 920 * Side Effects: 921 * See Dir_AddDir. 922 * 923 *----------------------------------------------------------------------- 924 */ 925 static int 926 ParseAddDir(ClientData path, ClientData name) 927 { 928 (void)Dir_AddDir((Lst) path, (char *)name); 929 return(0); 930 } 931 932 /*- 933 *----------------------------------------------------------------------- 934 * ParseClearPath -- 935 * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going 936 * 937 * Results: 938 * === 0 939 * 940 * Side Effects: 941 * See Dir_ClearPath 942 * 943 *----------------------------------------------------------------------- 944 */ 945 static int 946 ParseClearPath(ClientData path, ClientData dummy) 947 { 948 Dir_ClearPath((Lst) path); 949 return(dummy ? 0 : 0); 950 } 951 952 /*- 953 *--------------------------------------------------------------------- 954 * ParseDoDependency -- 955 * Parse the dependency line in line. 956 * 957 * Input: 958 * line the line to parse 959 * 960 * Results: 961 * None 962 * 963 * Side Effects: 964 * The nodes of the sources are linked as children to the nodes of the 965 * targets. Some nodes may be created. 966 * 967 * We parse a dependency line by first extracting words from the line and 968 * finding nodes in the list of all targets with that name. This is done 969 * until a character is encountered which is an operator character. Currently 970 * these are only ! and :. At this point the operator is parsed and the 971 * pointer into the line advanced until the first source is encountered. 972 * The parsed operator is applied to each node in the 'targets' list, 973 * which is where the nodes found for the targets are kept, by means of 974 * the ParseDoOp function. 975 * The sources are read in much the same way as the targets were except 976 * that now they are expanded using the wildcarding scheme of the C-Shell 977 * and all instances of the resulting words in the list of all targets 978 * are found. Each of the resulting nodes is then linked to each of the 979 * targets as one of its children. 980 * Certain targets are handled specially. These are the ones detailed 981 * by the specType variable. 982 * The storing of transformation rules is also taken care of here. 983 * A target is recognized as a transformation rule by calling 984 * Suff_IsTransform. If it is a transformation rule, its node is gotten 985 * from the suffix module via Suff_AddTransform rather than the standard 986 * Targ_FindNode in the target module. 987 *--------------------------------------------------------------------- 988 */ 989 static void 990 ParseDoDependency(char *line) 991 { 992 char *cp; /* our current position */ 993 GNode *gn = NULL; /* a general purpose temporary node */ 994 int op; /* the operator on the line */ 995 char savec; /* a place to save a character */ 996 Lst paths; /* List of search paths to alter when parsing 997 * a list of .PATH targets */ 998 int tOp; /* operator from special target */ 999 Lst sources; /* list of archive source names after 1000 * expansion */ 1001 Lst curTargs; /* list of target names to be found and added 1002 * to the targets list */ 1003 Lst curSrcs; /* list of sources in order */ 1004 char *lstart = line; 1005 Boolean hasWait; /* is .WAIT present in srcs */ 1006 1007 tOp = 0; 1008 1009 specType = Not; 1010 waiting = 0; 1011 paths = (Lst)NULL; 1012 1013 curTargs = Lst_Init(FALSE); 1014 curSrcs = Lst_Init(FALSE); 1015 1016 do { 1017 for (cp = line; 1018 *cp && (ParseIsEscaped(lstart, cp) || 1019 (!isspace ((unsigned char)*cp) && 1020 (*cp != '!') && (*cp != ':') && (*cp != LPAREN))); 1021 cp++) 1022 { 1023 if (*cp == '$') { 1024 /* 1025 * Must be a dynamic source (would have been expanded 1026 * otherwise), so call the Var module to parse the puppy 1027 * so we can safely advance beyond it...There should be 1028 * no errors in this, as they would have been discovered 1029 * in the initial Var_Subst and we wouldn't be here. 1030 */ 1031 int length; 1032 void *freeIt; 1033 char *result; 1034 1035 result = Var_Parse(cp, VAR_CMD, TRUE, &length, &freeIt); 1036 if (freeIt) 1037 free(freeIt); 1038 cp += length-1; 1039 } 1040 continue; 1041 } 1042 if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) { 1043 /* 1044 * Archives must be handled specially to make sure the OP_ARCHV 1045 * flag is set in their 'type' field, for one thing, and because 1046 * things like "archive(file1.o file2.o file3.o)" are permissible. 1047 * Arch_ParseArchive will set 'line' to be the first non-blank 1048 * after the archive-spec. It creates/finds nodes for the members 1049 * and places them on the given list, returning SUCCESS if all 1050 * went well and FAILURE if there was an error in the 1051 * specification. On error, line should remain untouched. 1052 */ 1053 if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) { 1054 Parse_Error(PARSE_FATAL, 1055 "Error in archive specification: \"%s\"", line); 1056 goto out; 1057 } else { 1058 continue; 1059 } 1060 } 1061 savec = *cp; 1062 1063 if (!*cp) { 1064 /* 1065 * Ending a dependency line without an operator is a Bozo 1066 * no-no. As a heuristic, this is also often triggered by 1067 * undetected conflicts from cvs/rcs merges. 1068 */ 1069 if ((strncmp(line, "<<<<<<", 6) == 0) || 1070 (strncmp(line, "======", 6) == 0) || 1071 (strncmp(line, ">>>>>>", 6) == 0)) 1072 Parse_Error(PARSE_FATAL, 1073 "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts"); 1074 else 1075 Parse_Error(PARSE_FATAL, "Need an operator"); 1076 goto out; 1077 } 1078 *cp = '\0'; 1079 1080 /* 1081 * Have a word in line. See if it's a special target and set 1082 * specType to match it. 1083 */ 1084 if (*line == '.' && isupper ((unsigned char)line[1])) { 1085 /* 1086 * See if the target is a special target that must have it 1087 * or its sources handled specially. 1088 */ 1089 int keywd = ParseFindKeyword(line); 1090 if (keywd != -1) { 1091 if (specType == ExPath && parseKeywords[keywd].spec != ExPath) { 1092 Parse_Error(PARSE_FATAL, "Mismatched special targets"); 1093 goto out; 1094 } 1095 1096 specType = parseKeywords[keywd].spec; 1097 tOp = parseKeywords[keywd].op; 1098 1099 /* 1100 * Certain special targets have special semantics: 1101 * .PATH Have to set the dirSearchPath 1102 * variable too 1103 * .MAIN Its sources are only used if 1104 * nothing has been specified to 1105 * create. 1106 * .DEFAULT Need to create a node to hang 1107 * commands on, but we don't want 1108 * it in the graph, nor do we want 1109 * it to be the Main Target, so we 1110 * create it, set OP_NOTMAIN and 1111 * add it to the list, setting 1112 * DEFAULT to the new node for 1113 * later use. We claim the node is 1114 * A transformation rule to make 1115 * life easier later, when we'll 1116 * use Make_HandleUse to actually 1117 * apply the .DEFAULT commands. 1118 * .PHONY The list of targets 1119 * .NOPATH Don't search for file in the path 1120 * .BEGIN 1121 * .END 1122 * .INTERRUPT Are not to be considered the 1123 * main target. 1124 * .NOTPARALLEL Make only one target at a time. 1125 * .SINGLESHELL Create a shell for each command. 1126 * .ORDER Must set initial predecessor to NIL 1127 */ 1128 switch (specType) { 1129 case ExPath: 1130 if (paths == NULL) { 1131 paths = Lst_Init(FALSE); 1132 } 1133 (void)Lst_AtEnd(paths, dirSearchPath); 1134 break; 1135 case Main: 1136 if (!Lst_IsEmpty(create)) { 1137 specType = Not; 1138 } 1139 break; 1140 case Begin: 1141 case End: 1142 case Interrupt: 1143 gn = Targ_FindNode(line, TARG_CREATE); 1144 gn->type |= OP_NOTMAIN|OP_SPECIAL; 1145 (void)Lst_AtEnd(targets, gn); 1146 break; 1147 case Default: 1148 gn = Targ_NewGN(".DEFAULT"); 1149 gn->type |= (OP_NOTMAIN|OP_TRANSFORM); 1150 (void)Lst_AtEnd(targets, gn); 1151 DEFAULT = gn; 1152 break; 1153 case NotParallel: 1154 maxJobs = 1; 1155 break; 1156 case SingleShell: 1157 compatMake = TRUE; 1158 break; 1159 case Order: 1160 predecessor = NILGNODE; 1161 break; 1162 default: 1163 break; 1164 } 1165 } else if (strncmp(line, ".PATH", 5) == 0) { 1166 /* 1167 * .PATH<suffix> has to be handled specially. 1168 * Call on the suffix module to give us a path to 1169 * modify. 1170 */ 1171 Lst path; 1172 1173 specType = ExPath; 1174 path = Suff_GetPath(&line[5]); 1175 if (path == NILLST) { 1176 Parse_Error(PARSE_FATAL, 1177 "Suffix '%s' not defined (yet)", 1178 &line[5]); 1179 goto out; 1180 } else { 1181 if (paths == (Lst)NULL) { 1182 paths = Lst_Init(FALSE); 1183 } 1184 (void)Lst_AtEnd(paths, path); 1185 } 1186 } 1187 } 1188 1189 /* 1190 * Have word in line. Get or create its node and stick it at 1191 * the end of the targets list 1192 */ 1193 if ((specType == Not) && (*line != '\0')) { 1194 if (Dir_HasWildcards(line)) { 1195 /* 1196 * Targets are to be sought only in the current directory, 1197 * so create an empty path for the thing. Note we need to 1198 * use Dir_Destroy in the destruction of the path as the 1199 * Dir module could have added a directory to the path... 1200 */ 1201 Lst emptyPath = Lst_Init(FALSE); 1202 1203 Dir_Expand(line, emptyPath, curTargs); 1204 1205 Lst_Destroy(emptyPath, Dir_Destroy); 1206 } else { 1207 /* 1208 * No wildcards, but we want to avoid code duplication, 1209 * so create a list with the word on it. 1210 */ 1211 (void)Lst_AtEnd(curTargs, line); 1212 } 1213 1214 while(!Lst_IsEmpty(curTargs)) { 1215 char *targName = (char *)Lst_DeQueue(curTargs); 1216 1217 if (!Suff_IsTransform (targName)) { 1218 gn = Targ_FindNode(targName, TARG_CREATE); 1219 } else { 1220 gn = Suff_AddTransform(targName); 1221 } 1222 1223 (void)Lst_AtEnd(targets, gn); 1224 } 1225 } else if (specType == ExPath && *line != '.' && *line != '\0') { 1226 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line); 1227 } 1228 1229 *cp = savec; 1230 /* 1231 * If it is a special type and not .PATH, it's the only target we 1232 * allow on this line... 1233 */ 1234 if (specType != Not && specType != ExPath) { 1235 Boolean warning = FALSE; 1236 1237 while (*cp && (ParseIsEscaped(lstart, cp) || 1238 ((*cp != '!') && (*cp != ':')))) { 1239 if (ParseIsEscaped(lstart, cp) || 1240 (*cp != ' ' && *cp != '\t')) { 1241 warning = TRUE; 1242 } 1243 cp++; 1244 } 1245 if (warning) { 1246 Parse_Error(PARSE_WARNING, "Extra target ignored"); 1247 } 1248 } else { 1249 while (*cp && isspace ((unsigned char)*cp)) { 1250 cp++; 1251 } 1252 } 1253 line = cp; 1254 } while (*line && (ParseIsEscaped(lstart, line) || 1255 ((*line != '!') && (*line != ':')))); 1256 1257 /* 1258 * Don't need the list of target names anymore... 1259 */ 1260 Lst_Destroy(curTargs, NOFREE); 1261 curTargs = NULL; 1262 1263 if (!Lst_IsEmpty(targets)) { 1264 switch(specType) { 1265 default: 1266 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored"); 1267 break; 1268 case Default: 1269 case Begin: 1270 case End: 1271 case Interrupt: 1272 /* 1273 * These four create nodes on which to hang commands, so 1274 * targets shouldn't be empty... 1275 */ 1276 case Not: 1277 /* 1278 * Nothing special here -- targets can be empty if it wants. 1279 */ 1280 break; 1281 } 1282 } 1283 1284 /* 1285 * Have now parsed all the target names. Must parse the operator next. The 1286 * result is left in op . 1287 */ 1288 if (*cp == '!') { 1289 op = OP_FORCE; 1290 } else if (*cp == ':') { 1291 if (cp[1] == ':') { 1292 op = OP_DOUBLEDEP; 1293 cp++; 1294 } else { 1295 op = OP_DEPENDS; 1296 } 1297 } else { 1298 Parse_Error(PARSE_FATAL, "Missing dependency operator"); 1299 goto out; 1300 } 1301 1302 cp++; /* Advance beyond operator */ 1303 1304 Lst_ForEach(targets, ParseDoOp, &op); 1305 1306 /* 1307 * Get to the first source 1308 */ 1309 while (*cp && isspace ((unsigned char)*cp)) { 1310 cp++; 1311 } 1312 line = cp; 1313 1314 /* 1315 * Several special targets take different actions if present with no 1316 * sources: 1317 * a .SUFFIXES line with no sources clears out all old suffixes 1318 * a .PRECIOUS line makes all targets precious 1319 * a .IGNORE line ignores errors for all targets 1320 * a .SILENT line creates silence when making all targets 1321 * a .PATH removes all directories from the search path(s). 1322 */ 1323 if (!*line) { 1324 switch (specType) { 1325 case Suffixes: 1326 Suff_ClearSuffixes(); 1327 break; 1328 case Precious: 1329 allPrecious = TRUE; 1330 break; 1331 case Ignore: 1332 ignoreErrors = TRUE; 1333 break; 1334 case Silent: 1335 beSilent = TRUE; 1336 break; 1337 case ExPath: 1338 Lst_ForEach(paths, ParseClearPath, NULL); 1339 Dir_SetPATH(); 1340 break; 1341 #ifdef POSIX 1342 case Posix: 1343 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0); 1344 break; 1345 #endif 1346 default: 1347 break; 1348 } 1349 } else if (specType == MFlags) { 1350 /* 1351 * Call on functions in main.c to deal with these arguments and 1352 * set the initial character to a null-character so the loop to 1353 * get sources won't get anything 1354 */ 1355 Main_ParseArgLine(line); 1356 *line = '\0'; 1357 } else if (specType == ExShell) { 1358 if (Job_ParseShell(line) != SUCCESS) { 1359 Parse_Error(PARSE_FATAL, "improper shell specification"); 1360 goto out; 1361 } 1362 *line = '\0'; 1363 } else if ((specType == NotParallel) || (specType == SingleShell)) { 1364 *line = '\0'; 1365 } 1366 1367 /* 1368 * NOW GO FOR THE SOURCES 1369 */ 1370 if ((specType == Suffixes) || (specType == ExPath) || 1371 (specType == Includes) || (specType == Libs) || 1372 (specType == Null) || (specType == ExObjdir)) 1373 { 1374 while (*line) { 1375 /* 1376 * If the target was one that doesn't take files as its sources 1377 * but takes something like suffixes, we take each 1378 * space-separated word on the line as a something and deal 1379 * with it accordingly. 1380 * 1381 * If the target was .SUFFIXES, we take each source as a 1382 * suffix and add it to the list of suffixes maintained by the 1383 * Suff module. 1384 * 1385 * If the target was a .PATH, we add the source as a directory 1386 * to search on the search path. 1387 * 1388 * If it was .INCLUDES, the source is taken to be the suffix of 1389 * files which will be #included and whose search path should 1390 * be present in the .INCLUDES variable. 1391 * 1392 * If it was .LIBS, the source is taken to be the suffix of 1393 * files which are considered libraries and whose search path 1394 * should be present in the .LIBS variable. 1395 * 1396 * If it was .NULL, the source is the suffix to use when a file 1397 * has no valid suffix. 1398 * 1399 * If it was .OBJDIR, the source is a new definition for .OBJDIR, 1400 * and will cause make to do a new chdir to that path. 1401 */ 1402 while (*cp && !isspace ((unsigned char)*cp)) { 1403 cp++; 1404 } 1405 savec = *cp; 1406 *cp = '\0'; 1407 switch (specType) { 1408 case Suffixes: 1409 Suff_AddSuffix(line, &mainNode); 1410 break; 1411 case ExPath: 1412 Lst_ForEach(paths, ParseAddDir, line); 1413 break; 1414 case Includes: 1415 Suff_AddInclude(line); 1416 break; 1417 case Libs: 1418 Suff_AddLib(line); 1419 break; 1420 case Null: 1421 Suff_SetNull(line); 1422 break; 1423 case ExObjdir: 1424 Main_SetObjdir(line); 1425 break; 1426 default: 1427 break; 1428 } 1429 *cp = savec; 1430 if (savec != '\0') { 1431 cp++; 1432 } 1433 while (*cp && isspace ((unsigned char)*cp)) { 1434 cp++; 1435 } 1436 line = cp; 1437 } 1438 if (paths) { 1439 Lst_Destroy(paths, NOFREE); 1440 } 1441 if (specType == ExPath) 1442 Dir_SetPATH(); 1443 } else { 1444 /* 1445 * We don't need ParseDoSpecialSrc unless .WAIT is present. 1446 */ 1447 hasWait = (strstr(line, ".WAIT") != NULL); 1448 1449 while (*line) { 1450 /* 1451 * The targets take real sources, so we must beware of archive 1452 * specifications (i.e. things with left parentheses in them) 1453 * and handle them accordingly. 1454 */ 1455 for (; *cp && !isspace ((unsigned char)*cp); cp++) { 1456 if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) { 1457 /* 1458 * Only stop for a left parenthesis if it isn't at the 1459 * start of a word (that'll be for variable changes 1460 * later) and isn't preceded by a dollar sign (a dynamic 1461 * source). 1462 */ 1463 break; 1464 } 1465 } 1466 1467 if (*cp == LPAREN) { 1468 sources = Lst_Init(FALSE); 1469 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) { 1470 Parse_Error(PARSE_FATAL, 1471 "Error in source archive spec \"%s\"", line); 1472 goto out; 1473 } 1474 1475 while (!Lst_IsEmpty (sources)) { 1476 gn = (GNode *)Lst_DeQueue(sources); 1477 ParseDoSrc(tOp, gn->name, curSrcs, hasWait); 1478 } 1479 Lst_Destroy(sources, NOFREE); 1480 cp = line; 1481 } else { 1482 if (*cp) { 1483 *cp = '\0'; 1484 cp += 1; 1485 } 1486 1487 ParseDoSrc(tOp, line, curSrcs, hasWait); 1488 } 1489 while (*cp && isspace ((unsigned char)*cp)) { 1490 cp++; 1491 } 1492 line = cp; 1493 } 1494 } 1495 1496 if (mainNode == NILGNODE) { 1497 /* 1498 * If we have yet to decide on a main target to make, in the 1499 * absence of any user input, we want the first target on 1500 * the first dependency line that is actually a real target 1501 * (i.e. isn't a .USE or .EXEC rule) to be made. 1502 */ 1503 Lst_ForEach(targets, ParseFindMain, NULL); 1504 } 1505 1506 out: 1507 if (curTargs) 1508 Lst_Destroy(curTargs, NOFREE); 1509 /* 1510 * Finally, destroy the list of sources 1511 */ 1512 Lst_Destroy(curSrcs, NOFREE); 1513 } 1514 1515 /*- 1516 *--------------------------------------------------------------------- 1517 * Parse_IsVar -- 1518 * Return TRUE if the passed line is a variable assignment. A variable 1519 * assignment consists of a single word followed by optional whitespace 1520 * followed by either a += or an = operator. 1521 * This function is used both by the Parse_File function and main when 1522 * parsing the command-line arguments. 1523 * 1524 * Input: 1525 * line the line to check 1526 * 1527 * Results: 1528 * TRUE if it is. FALSE if it ain't 1529 * 1530 * Side Effects: 1531 * none 1532 *--------------------------------------------------------------------- 1533 */ 1534 Boolean 1535 Parse_IsVar(char *line) 1536 { 1537 Boolean wasSpace = FALSE; /* set TRUE if found a space */ 1538 Boolean haveName = FALSE; /* Set TRUE if have a variable name */ 1539 int level = 0; 1540 #define ISEQOPERATOR(c) \ 1541 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!')) 1542 1543 /* 1544 * Skip to variable name 1545 */ 1546 for (;(*line == ' ') || (*line == '\t'); line++) 1547 continue; 1548 1549 for (; *line != '=' || level != 0; line++) 1550 switch (*line) { 1551 case '\0': 1552 /* 1553 * end-of-line -- can't be a variable assignment. 1554 */ 1555 return FALSE; 1556 1557 case ' ': 1558 case '\t': 1559 /* 1560 * there can be as much white space as desired so long as there is 1561 * only one word before the operator 1562 */ 1563 wasSpace = TRUE; 1564 break; 1565 1566 case LPAREN: 1567 case '{': 1568 level++; 1569 break; 1570 1571 case '}': 1572 case RPAREN: 1573 level--; 1574 break; 1575 1576 default: 1577 if (wasSpace && haveName) { 1578 if (ISEQOPERATOR(*line)) { 1579 /* 1580 * We must have a finished word 1581 */ 1582 if (level != 0) 1583 return FALSE; 1584 1585 /* 1586 * When an = operator [+?!:] is found, the next 1587 * character must be an = or it ain't a valid 1588 * assignment. 1589 */ 1590 if (line[1] == '=') 1591 return haveName; 1592 #ifdef SUNSHCMD 1593 /* 1594 * This is a shell command 1595 */ 1596 if (strncmp(line, ":sh", 3) == 0) 1597 return haveName; 1598 #endif 1599 } 1600 /* 1601 * This is the start of another word, so not assignment. 1602 */ 1603 return FALSE; 1604 } 1605 else { 1606 haveName = TRUE; 1607 wasSpace = FALSE; 1608 } 1609 break; 1610 } 1611 1612 return haveName; 1613 } 1614 1615 /*- 1616 *--------------------------------------------------------------------- 1617 * Parse_DoVar -- 1618 * Take the variable assignment in the passed line and do it in the 1619 * global context. 1620 * 1621 * Note: There is a lexical ambiguity with assignment modifier characters 1622 * in variable names. This routine interprets the character before the = 1623 * as a modifier. Therefore, an assignment like 1624 * C++=/usr/bin/CC 1625 * is interpreted as "C+ +=" instead of "C++ =". 1626 * 1627 * Input: 1628 * line a line guaranteed to be a variable assignment. 1629 * This reduces error checks 1630 * ctxt Context in which to do the assignment 1631 * 1632 * Results: 1633 * none 1634 * 1635 * Side Effects: 1636 * the variable structure of the given variable name is altered in the 1637 * global context. 1638 *--------------------------------------------------------------------- 1639 */ 1640 void 1641 Parse_DoVar(char *line, GNode *ctxt) 1642 { 1643 char *cp; /* pointer into line */ 1644 enum { 1645 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL 1646 } type; /* Type of assignment */ 1647 char *opc; /* ptr to operator character to 1648 * null-terminate the variable name */ 1649 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed, 1650 * i.e. if any variable expansion was 1651 * performed */ 1652 /* 1653 * Avoid clobbered variable warnings by forcing the compiler 1654 * to ``unregister'' variables 1655 */ 1656 #if __GNUC__ 1657 (void) &cp; 1658 (void) &line; 1659 #endif 1660 1661 /* 1662 * Skip to variable name 1663 */ 1664 while ((*line == ' ') || (*line == '\t')) { 1665 line++; 1666 } 1667 1668 /* 1669 * Skip to operator character, nulling out whitespace as we go 1670 */ 1671 for (cp = line + 1; *cp != '='; cp++) { 1672 if (isspace ((unsigned char)*cp)) { 1673 *cp = '\0'; 1674 } 1675 } 1676 opc = cp-1; /* operator is the previous character */ 1677 *cp++ = '\0'; /* nuke the = */ 1678 1679 /* 1680 * Check operator type 1681 */ 1682 switch (*opc) { 1683 case '+': 1684 type = VAR_APPEND; 1685 *opc = '\0'; 1686 break; 1687 1688 case '?': 1689 /* 1690 * If the variable already has a value, we don't do anything. 1691 */ 1692 *opc = '\0'; 1693 if (Var_Exists(line, ctxt)) { 1694 return; 1695 } else { 1696 type = VAR_NORMAL; 1697 } 1698 break; 1699 1700 case ':': 1701 type = VAR_SUBST; 1702 *opc = '\0'; 1703 break; 1704 1705 case '!': 1706 type = VAR_SHELL; 1707 *opc = '\0'; 1708 break; 1709 1710 default: 1711 #ifdef SUNSHCMD 1712 while (opc > line && *opc != ':') 1713 opc--; 1714 1715 if (strncmp(opc, ":sh", 3) == 0) { 1716 type = VAR_SHELL; 1717 *opc = '\0'; 1718 break; 1719 } 1720 #endif 1721 type = VAR_NORMAL; 1722 break; 1723 } 1724 1725 while (isspace ((unsigned char)*cp)) { 1726 cp++; 1727 } 1728 1729 if (type == VAR_APPEND) { 1730 Var_Append(line, cp, ctxt); 1731 } else if (type == VAR_SUBST) { 1732 /* 1733 * Allow variables in the old value to be undefined, but leave their 1734 * invocation alone -- this is done by forcing oldVars to be false. 1735 * XXX: This can cause recursive variables, but that's not hard to do, 1736 * and this allows someone to do something like 1737 * 1738 * CFLAGS = $(.INCLUDES) 1739 * CFLAGS := -I.. $(CFLAGS) 1740 * 1741 * And not get an error. 1742 */ 1743 Boolean oldOldVars = oldVars; 1744 1745 oldVars = FALSE; 1746 1747 /* 1748 * make sure that we set the variable the first time to nothing 1749 * so that it gets substituted! 1750 */ 1751 if (!Var_Exists(line, ctxt)) 1752 Var_Set(line, "", ctxt, 0); 1753 1754 cp = Var_Subst(NULL, cp, ctxt, FALSE); 1755 oldVars = oldOldVars; 1756 freeCp = TRUE; 1757 1758 Var_Set(line, cp, ctxt, 0); 1759 } else if (type == VAR_SHELL) { 1760 char *res; 1761 const char *error; 1762 1763 if (strchr(cp, '$') != NULL) { 1764 /* 1765 * There's a dollar sign in the command, so perform variable 1766 * expansion on the whole thing. The resulting string will need 1767 * freeing when we're done, so set freeCmd to TRUE. 1768 */ 1769 cp = Var_Subst(NULL, cp, VAR_CMD, TRUE); 1770 freeCp = TRUE; 1771 } 1772 1773 res = Cmd_Exec(cp, &error); 1774 Var_Set(line, res, ctxt, 0); 1775 free(res); 1776 1777 if (error) 1778 Parse_Error(PARSE_WARNING, error, cp); 1779 } else { 1780 /* 1781 * Normal assignment -- just do it. 1782 */ 1783 Var_Set(line, cp, ctxt, 0); 1784 } 1785 if (strcmp(line, MAKEOVERRIDES) == 0) 1786 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */ 1787 else if (strcmp(line, ".CURDIR") == 0) { 1788 /* 1789 * Somone is being (too?) clever... 1790 * Let's pretend they know what they are doing and 1791 * re-initialize the 'cur' Path. 1792 */ 1793 Dir_InitCur(cp); 1794 Dir_SetPATH(); 1795 } 1796 if (freeCp) 1797 free(cp); 1798 } 1799 1800 1801 /*- 1802 * ParseAddCmd -- 1803 * Lst_ForEach function to add a command line to all targets 1804 * 1805 * Input: 1806 * gnp the node to which the command is to be added 1807 * cmd the command to add 1808 * 1809 * Results: 1810 * Always 0 1811 * 1812 * Side Effects: 1813 * A new element is added to the commands list of the node. 1814 */ 1815 static int 1816 ParseAddCmd(ClientData gnp, ClientData cmd) 1817 { 1818 GNode *gn = (GNode *)gnp; 1819 /* if target already supplied, ignore commands */ 1820 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) 1821 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts)); 1822 if (!(gn->type & OP_HAS_COMMANDS)) { 1823 (void)Lst_AtEnd(gn->commands, cmd); 1824 ParseMark(gn); 1825 } else { 1826 #ifdef notyet 1827 /* XXX: We cannot do this until we fix the tree */ 1828 (void)Lst_AtEnd(gn->commands, cmd); 1829 Parse_Error(PARSE_WARNING, 1830 "overriding commands for target \"%s\"; " 1831 "previous commands defined at %s: %d ignored", 1832 gn->name, gn->fname, gn->lineno); 1833 #else 1834 Parse_Error(PARSE_WARNING, 1835 "duplicate script for target \"%s\" ignored", 1836 gn->name); 1837 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING, 1838 "using previous script for \"%s\" defined here", 1839 gn->name); 1840 #endif 1841 } 1842 return(0); 1843 } 1844 1845 /*- 1846 *----------------------------------------------------------------------- 1847 * ParseHasCommands -- 1848 * Callback procedure for Parse_File when destroying the list of 1849 * targets on the last dependency line. Marks a target as already 1850 * having commands if it does, to keep from having shell commands 1851 * on multiple dependency lines. 1852 * 1853 * Input: 1854 * gnp Node to examine 1855 * 1856 * Results: 1857 * None 1858 * 1859 * Side Effects: 1860 * OP_HAS_COMMANDS may be set for the target. 1861 * 1862 *----------------------------------------------------------------------- 1863 */ 1864 static void 1865 ParseHasCommands(ClientData gnp) 1866 { 1867 GNode *gn = (GNode *)gnp; 1868 if (!Lst_IsEmpty(gn->commands)) { 1869 gn->type |= OP_HAS_COMMANDS; 1870 } 1871 } 1872 1873 /*- 1874 *----------------------------------------------------------------------- 1875 * Parse_AddIncludeDir -- 1876 * Add a directory to the path searched for included makefiles 1877 * bracketed by double-quotes. Used by functions in main.c 1878 * 1879 * Input: 1880 * dir The name of the directory to add 1881 * 1882 * Results: 1883 * None. 1884 * 1885 * Side Effects: 1886 * The directory is appended to the list. 1887 * 1888 *----------------------------------------------------------------------- 1889 */ 1890 void 1891 Parse_AddIncludeDir(char *dir) 1892 { 1893 (void)Dir_AddDir(parseIncPath, dir); 1894 } 1895 1896 /*- 1897 *--------------------------------------------------------------------- 1898 * ParseDoInclude -- 1899 * Push to another file. 1900 * 1901 * The input is the line minus the `.'. A file spec is a string 1902 * enclosed in <> or "". The former is looked for only in sysIncPath. 1903 * The latter in . and the directories specified by -I command line 1904 * options 1905 * 1906 * Results: 1907 * None 1908 * 1909 * Side Effects: 1910 * A structure is added to the includes Lst and readProc, lineno, 1911 * fname and curFILE are altered for the new file 1912 *--------------------------------------------------------------------- 1913 */ 1914 static void 1915 ParseDoInclude(char *line) 1916 { 1917 char *fullname; /* full pathname of file */ 1918 IFile *oldFile; /* state associated with current file */ 1919 char endc; /* the character which ends the file spec */ 1920 char *cp; /* current position in file spec */ 1921 Boolean isSystem; /* TRUE if makefile is a system makefile */ 1922 int silent = (*line != 'i') ? 1 : 0; 1923 char *file = &line[7 + silent]; 1924 1925 /* 1926 * Skip to delimiter character so we know where to look 1927 */ 1928 while ((*file == ' ') || (*file == '\t')) { 1929 file++; 1930 } 1931 1932 if ((*file != '"') && (*file != '<')) { 1933 Parse_Error(PARSE_FATAL, 1934 ".include filename must be delimited by '\"' or '<'"); 1935 return; 1936 } 1937 1938 /* 1939 * Set the search path on which to find the include file based on the 1940 * characters which bracket its name. Angle-brackets imply it's 1941 * a system Makefile while double-quotes imply it's a user makefile 1942 */ 1943 if (*file == '<') { 1944 isSystem = TRUE; 1945 endc = '>'; 1946 } else { 1947 isSystem = FALSE; 1948 endc = '"'; 1949 } 1950 1951 /* 1952 * Skip to matching delimiter 1953 */ 1954 for (cp = ++file; *cp && *cp != endc; cp++) { 1955 continue; 1956 } 1957 1958 if (*cp != endc) { 1959 Parse_Error(PARSE_FATAL, 1960 "Unclosed %cinclude filename. '%c' expected", 1961 '.', endc); 1962 return; 1963 } 1964 *cp = '\0'; 1965 1966 /* 1967 * Substitute for any variables in the file name before trying to 1968 * find the thing. 1969 */ 1970 file = Var_Subst(NULL, file, VAR_CMD, FALSE); 1971 1972 /* 1973 * Now we know the file's name and its search path, we attempt to 1974 * find the durn thing. A return of NULL indicates the file don't 1975 * exist. 1976 */ 1977 fullname = NULL; 1978 1979 if (!isSystem) { 1980 /* 1981 * Include files contained in double-quotes are first searched for 1982 * relative to the including file's location. We don't want to 1983 * cd there, of course, so we just tack on the old file's 1984 * leading path components and call Dir_FindFile to see if 1985 * we can locate the beast. 1986 */ 1987 char *prefEnd, *Fname; 1988 1989 /* Make a temporary copy of this, to be safe. */ 1990 Fname = estrdup(curFile.fname); 1991 1992 prefEnd = strrchr(Fname, '/'); 1993 if (prefEnd != NULL) { 1994 char *newName; 1995 1996 *prefEnd = '\0'; 1997 if (file[0] == '/') 1998 newName = estrdup(file); 1999 else 2000 newName = str_concat(Fname, file, STR_ADDSLASH); 2001 fullname = Dir_FindFile(newName, parseIncPath); 2002 if (fullname == NULL) { 2003 fullname = Dir_FindFile(newName, dirSearchPath); 2004 } 2005 free(newName); 2006 *prefEnd = '/'; 2007 } else { 2008 fullname = NULL; 2009 } 2010 free(Fname); 2011 if (fullname == NULL) { 2012 /* 2013 * Makefile wasn't found in same directory as included makefile. 2014 * Search for it first on the -I search path, 2015 * then on the .PATH search path, if not found in a -I directory. 2016 * XXX: Suffix specific? 2017 */ 2018 fullname = Dir_FindFile(file, parseIncPath); 2019 if (fullname == NULL) { 2020 fullname = Dir_FindFile(file, dirSearchPath); 2021 } 2022 } 2023 } 2024 2025 /* Looking for a system file or file still not found */ 2026 if (fullname == NULL) { 2027 /* 2028 * Look for it on the system path 2029 */ 2030 fullname = Dir_FindFile(file, Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2031 } 2032 2033 if (fullname == NULL) { 2034 *cp = endc; 2035 if (!silent) 2036 Parse_Error(PARSE_FATAL, "Could not find %s", file); 2037 return; 2038 } 2039 2040 free(file); 2041 2042 /* 2043 * Once we find the absolute path to the file, we get to save all the 2044 * state from the current file before we can start reading this 2045 * include file. The state is stored in an IFile structure which 2046 * is placed on a list with other IFile structures. The list makes 2047 * a very nice stack to track how we got here... 2048 */ 2049 oldFile = emalloc(sizeof(IFile)); 2050 2051 memcpy(oldFile, &curFile, sizeof(IFile)); 2052 2053 (void)Lst_AtFront(includes, oldFile); 2054 2055 /* 2056 * Once the previous state has been saved, we can get down to reading 2057 * the new file. We set up the name of the file to be the absolute 2058 * name of the include file so error messages refer to the right 2059 * place. Naturally enough, we start reading at line number 0. 2060 */ 2061 curFile.fname = fullname; 2062 curFile.lineno = 0; 2063 2064 ParseSetParseFile(curFile.fname); 2065 2066 curFile.F = fopen(fullname, "r"); 2067 curFile.P = NULL; 2068 2069 if (curFile.F == (FILE * ) NULL) { 2070 if (!silent) 2071 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname); 2072 /* 2073 * Pop to previous file 2074 */ 2075 (void)ParseEOF(0); 2076 } 2077 } 2078 2079 2080 /*- 2081 *--------------------------------------------------------------------- 2082 * ParseSetParseFile -- 2083 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and 2084 * basename of the given filename 2085 * 2086 * Results: 2087 * None 2088 * 2089 * Side Effects: 2090 * The .PARSEDIR and .PARSEFILE variables are overwritten by the 2091 * dirname and basename of the given filename. 2092 *--------------------------------------------------------------------- 2093 */ 2094 static void 2095 ParseSetParseFile(char *filename) 2096 { 2097 char *slash; 2098 2099 slash = strrchr(filename, '/'); 2100 if (slash == 0) { 2101 Var_Set(".PARSEDIR", ".", VAR_GLOBAL, 0); 2102 Var_Set(".PARSEFILE", filename, VAR_GLOBAL, 0); 2103 } else { 2104 *slash = '\0'; 2105 Var_Set(".PARSEDIR", filename, VAR_GLOBAL, 0); 2106 Var_Set(".PARSEFILE", slash+1, VAR_GLOBAL, 0); 2107 *slash = '/'; 2108 } 2109 } 2110 2111 2112 /*- 2113 *--------------------------------------------------------------------- 2114 * Parse_FromString -- 2115 * Start Parsing from the given string 2116 * 2117 * Results: 2118 * None 2119 * 2120 * Side Effects: 2121 * A structure is added to the includes Lst and readProc, lineno, 2122 * fname and curFILE are altered for the new file 2123 *--------------------------------------------------------------------- 2124 */ 2125 void 2126 Parse_FromString(char *str, int lineno) 2127 { 2128 IFile *oldFile; /* state associated with this file */ 2129 2130 if (DEBUG(FOR)) 2131 (void)fprintf(debug_file, "%s\n---- at line %d\n", str, lineno); 2132 2133 oldFile = emalloc(sizeof(IFile)); 2134 memcpy(oldFile, &curFile, sizeof(IFile)); 2135 2136 (void)Lst_AtFront(includes, oldFile); 2137 2138 curFile.F = NULL; 2139 curFile.P = emalloc(sizeof(PTR)); 2140 curFile.P->str = curFile.P->ptr = str; 2141 curFile.lineno = lineno; 2142 curFile.fname = estrdup(curFile.fname); 2143 } 2144 2145 2146 #ifdef SYSVINCLUDE 2147 /*- 2148 *--------------------------------------------------------------------- 2149 * ParseTraditionalInclude -- 2150 * Push to another file. 2151 * 2152 * The input is the current line. The file name(s) are 2153 * following the "include". 2154 * 2155 * Results: 2156 * None 2157 * 2158 * Side Effects: 2159 * A structure is added to the includes Lst and readProc, lineno, 2160 * fname and curFILE are altered for the new file 2161 *--------------------------------------------------------------------- 2162 */ 2163 static void 2164 ParseTraditionalInclude(char *line) 2165 { 2166 char *fullname; /* full pathname of file */ 2167 IFile *oldFile; /* state associated with current file */ 2168 char *cp; /* current position in file spec */ 2169 char *prefEnd; 2170 int done = 0; 2171 int silent = (line[0] != 'i') ? 1 : 0; 2172 char *file = &line[silent + 7]; 2173 char *cfname; 2174 size_t clineno; 2175 2176 cfname = curFile.fname; 2177 clineno = curFile.lineno; 2178 2179 if (DEBUG(PARSE)) { 2180 fprintf(debug_file, "ParseTraditionalInclude: %s\n", file); 2181 } 2182 2183 /* 2184 * Skip over whitespace 2185 */ 2186 while (isspace((unsigned char)*file)) 2187 file++; 2188 2189 /* 2190 * Substitute for any variables in the file name before trying to 2191 * find the thing. 2192 */ 2193 file = Var_Subst(NULL, file, VAR_CMD, FALSE); 2194 2195 if (*file == '\0') { 2196 Parse_Error(PARSE_FATAL, 2197 "Filename missing from \"include\""); 2198 return; 2199 } 2200 2201 for (; !done; file = cp + 1) { 2202 /* 2203 * Skip to end of line or next whitespace 2204 */ 2205 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++) 2206 continue; 2207 2208 if (*cp) 2209 *cp = '\0'; 2210 else 2211 done = 1; 2212 2213 /* 2214 * Now we know the file's name, we attempt to find the durn thing. 2215 * A return of NULL indicates the file don't exist. 2216 * 2217 * Include files are first searched for relative to the including 2218 * file's location. We don't want to cd there, of course, so we 2219 * just tack on the old file's leading path components and call 2220 * Dir_FindFile to see if we can locate the beast. 2221 * XXX - this *does* search in the current directory, right? 2222 */ 2223 2224 prefEnd = strrchr(cfname, '/'); 2225 if (prefEnd != NULL) { 2226 char *newName; 2227 2228 *prefEnd = '\0'; 2229 newName = str_concat(cfname, file, STR_ADDSLASH); 2230 fullname = Dir_FindFile(newName, parseIncPath); 2231 if (fullname == NULL) { 2232 fullname = Dir_FindFile(newName, dirSearchPath); 2233 } 2234 free(newName); 2235 *prefEnd = '/'; 2236 } else { 2237 fullname = NULL; 2238 } 2239 2240 if (fullname == NULL) { 2241 /* 2242 * System makefile or makefile wasn't found in same directory as 2243 * included makefile. Search for it first on the -I search path, 2244 * then on the .PATH search path, if not found in a 2245 * -I directory. XXX: Suffix specific? 2246 */ 2247 fullname = Dir_FindFile(file, parseIncPath); 2248 if (fullname == NULL) { 2249 fullname = Dir_FindFile(file, dirSearchPath); 2250 } 2251 } 2252 2253 if (fullname == NULL) { 2254 /* 2255 * Still haven't found the makefile. Look for it on the system 2256 * path as a last resort. 2257 */ 2258 fullname = Dir_FindFile(file, 2259 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2260 } 2261 2262 if (fullname == NULL) { 2263 if (!silent) 2264 ParseErrorInternal(cfname, clineno, PARSE_FATAL, 2265 "Could not find %s", file); 2266 free(file); 2267 continue; 2268 } 2269 2270 free(file); 2271 2272 /* 2273 * Once we find the absolute path to the file, we get to save all 2274 * the state from the current file before we can start reading this 2275 * include file. The state is stored in an IFile structure which 2276 * is placed on a list with other IFile structures. The list makes 2277 * a very nice stack to track how we got here... 2278 */ 2279 oldFile = emalloc(sizeof(IFile)); 2280 memcpy(oldFile, &curFile, sizeof(IFile)); 2281 2282 (void)Lst_AtFront(includes, oldFile); 2283 2284 /* 2285 * Once the previous state has been saved, we can get down to 2286 * reading the new file. We set up the name of the file to be the 2287 * absolute name of the include file so error messages refer to the 2288 * right place. Naturally enough, we start reading at line number 0. 2289 */ 2290 curFile.fname = fullname; 2291 curFile.lineno = 0; 2292 2293 curFile.F = fopen(fullname, "r"); 2294 curFile.P = NULL; 2295 2296 if (curFile.F == NULL) { 2297 if (!silent) 2298 ParseErrorInternal(cfname, clineno, PARSE_FATAL, 2299 "Cannot open %s", fullname); 2300 /* 2301 * Pop to previous file 2302 */ 2303 (void)ParseEOF(1); 2304 } 2305 } 2306 } 2307 #endif 2308 2309 /*- 2310 *--------------------------------------------------------------------- 2311 * ParseEOF -- 2312 * Called when EOF is reached in the current file. If we were reading 2313 * an include file, the includes stack is popped and things set up 2314 * to go back to reading the previous file at the previous location. 2315 * 2316 * Results: 2317 * CONTINUE if there's more to do. DONE if not. 2318 * 2319 * Side Effects: 2320 * The old curFILE, is closed. The includes list is shortened. 2321 * lineno, curFILE, and fname are changed if CONTINUE is returned. 2322 *--------------------------------------------------------------------- 2323 */ 2324 static int 2325 ParseEOF(int opened) 2326 { 2327 IFile *ifile; /* the state on the top of the includes stack */ 2328 2329 if (Lst_IsEmpty(includes)) { 2330 Var_Delete(".PARSEDIR", VAR_GLOBAL); 2331 Var_Delete(".PARSEFILE", VAR_GLOBAL); 2332 return (DONE); 2333 } 2334 2335 ifile = (IFile *)Lst_DeQueue(includes); 2336 2337 /* XXX dispose of curFile info */ 2338 free( curFile.fname); 2339 if (opened && curFile.F) 2340 (void)fclose(curFile.F); 2341 if (curFile.P) { 2342 free(curFile.P->str); 2343 free(curFile.P); 2344 } 2345 2346 memcpy(&curFile, ifile, sizeof(IFile)); 2347 2348 free(ifile); 2349 2350 /* pop the PARSEDIR/PARSEFILE variables */ 2351 ParseSetParseFile(curFile.fname); 2352 return (CONTINUE); 2353 } 2354 2355 /*- 2356 *--------------------------------------------------------------------- 2357 * ParseReadc -- 2358 * Read a character from the current file 2359 * 2360 * Results: 2361 * The character that was read 2362 * 2363 * Side Effects: 2364 *--------------------------------------------------------------------- 2365 */ 2366 static inline int 2367 ParseReadc(void) 2368 { 2369 if (curFile.F) 2370 return fgetc(curFile.F); 2371 2372 if (curFile.P && *curFile.P->ptr) 2373 return *curFile.P->ptr++; 2374 return EOF; 2375 } 2376 2377 2378 /*- 2379 *--------------------------------------------------------------------- 2380 * ParseUnreadc -- 2381 * Put back a character to the current file 2382 * 2383 * Results: 2384 * None. 2385 * 2386 * Side Effects: 2387 *--------------------------------------------------------------------- 2388 */ 2389 static void 2390 ParseUnreadc(int c) 2391 { 2392 if (curFile.F) { 2393 ungetc(c, curFile.F); 2394 return; 2395 } 2396 if (curFile.P) { 2397 *--(curFile.P->ptr) = c; 2398 return; 2399 } 2400 } 2401 2402 2403 /* ParseSkipLine(): 2404 * Grab the next line 2405 * 2406 * Input: 2407 * skip Skip lines that don't start with . 2408 * keep_newline Keep newline character as is. 2409 * 2410 */ 2411 static char * 2412 ParseSkipLine(int skip, int keep_newline) 2413 { 2414 char *line; 2415 int c, lastc, lineLength = 0; 2416 Buffer buf; 2417 2418 buf = Buf_Init(MAKE_BSIZE); 2419 2420 do { 2421 Buf_Discard(buf, lineLength); 2422 lastc = '\0'; 2423 2424 while (((c = ParseReadc()) != '\n' || lastc == '\\') 2425 && c != EOF) { 2426 if (c == '\n') { 2427 if (keep_newline) 2428 Buf_AddByte(buf, (Byte)c); 2429 else 2430 Buf_ReplaceLastByte(buf, (Byte)' '); 2431 curFile.lineno++; 2432 2433 while ((c = ParseReadc()) == ' ' || c == '\t'); 2434 2435 if (c == EOF) 2436 break; 2437 } 2438 2439 Buf_AddByte(buf, (Byte)c); 2440 lastc = c; 2441 } 2442 2443 if (c == EOF) { 2444 Parse_Error(PARSE_FATAL, "Unclosed conditional/for loop"); 2445 Buf_Destroy(buf, TRUE); 2446 return(NULL); 2447 } 2448 2449 curFile.lineno++; 2450 Buf_AddByte(buf, (Byte)'\0'); 2451 line = (char *)Buf_GetAll(buf, &lineLength); 2452 } while (skip == 1 && line[0] != '.'); 2453 2454 Buf_Destroy(buf, FALSE); 2455 return line; 2456 } 2457 2458 2459 /*- 2460 *--------------------------------------------------------------------- 2461 * ParseReadLine -- 2462 * Read an entire line from the input file. Called only by Parse_File. 2463 * To facilitate escaped newlines and what have you, a character is 2464 * buffered in 'lastc', which is '\0' when no characters have been 2465 * read. When we break out of the loop, c holds the terminating 2466 * character and lastc holds a character that should be added to 2467 * the line (unless we don't read anything but a terminator). 2468 * 2469 * Results: 2470 * A line w/o its newline 2471 * 2472 * Side Effects: 2473 * Only those associated with reading a character 2474 *--------------------------------------------------------------------- 2475 */ 2476 static char * 2477 ParseReadLine(void) 2478 { 2479 Buffer buf; /* Buffer for current line */ 2480 int c; /* the current character */ 2481 int lastc; /* The most-recent character */ 2482 Boolean semiNL; /* treat semi-colons as newlines */ 2483 Boolean ignDepOp; /* TRUE if should ignore dependency operators 2484 * for the purposes of setting semiNL */ 2485 Boolean ignComment; /* TRUE if should ignore comments (in a 2486 * shell command */ 2487 char *line; /* Result */ 2488 char *ep; /* to strip trailing blanks */ 2489 int lineLength; /* Length of result */ 2490 int lineno; /* Saved line # */ 2491 2492 semiNL = FALSE; 2493 ignDepOp = FALSE; 2494 ignComment = FALSE; 2495 2496 /* 2497 * Handle special-characters at the beginning of the line. Either a 2498 * leading tab (shell command) or pound-sign (possible conditional) 2499 * forces us to ignore comments and dependency operators and treat 2500 * semi-colons as semi-colons (by leaving semiNL FALSE). This also 2501 * discards completely blank lines. 2502 */ 2503 for (;;) { 2504 c = ParseReadc(); 2505 2506 if (c == '\t') { 2507 ignComment = ignDepOp = TRUE; 2508 break; 2509 } else if (c == '\n') { 2510 curFile.lineno++; 2511 } else if (c == '#') { 2512 ParseUnreadc(c); 2513 break; 2514 } else { 2515 /* 2516 * Anything else breaks out without doing anything 2517 */ 2518 break; 2519 } 2520 } 2521 2522 if (c != EOF) { 2523 lastc = c; 2524 buf = Buf_Init(MAKE_BSIZE); 2525 2526 while (((c = ParseReadc()) != '\n' || (lastc == '\\')) && 2527 (c != EOF)) 2528 { 2529 test_char: 2530 switch(c) { 2531 case '\n': 2532 /* 2533 * Escaped newline: read characters until a non-space or an 2534 * unescaped newline and replace them all by a single space. 2535 * This is done by storing the space over the backslash and 2536 * dropping through with the next nonspace. If it is a 2537 * semi-colon and semiNL is TRUE, it will be recognized as a 2538 * newline in the code below this... 2539 */ 2540 curFile.lineno++; 2541 lastc = ' '; 2542 while ((c = ParseReadc()) == ' ' || c == '\t') { 2543 continue; 2544 } 2545 if (c == EOF || c == '\n') { 2546 goto line_read; 2547 } else { 2548 /* 2549 * Check for comments, semiNL's, etc. -- easier than 2550 * ParseUnreadc(c); continue; 2551 */ 2552 goto test_char; 2553 } 2554 /*NOTREACHED*/ 2555 break; 2556 2557 case ';': 2558 /* 2559 * Semi-colon: Need to see if it should be interpreted as a 2560 * newline 2561 */ 2562 if (semiNL) { 2563 /* 2564 * To make sure the command that may be following this 2565 * semi-colon begins with a tab, we push one back into the 2566 * input stream. This will overwrite the semi-colon in the 2567 * buffer. If there is no command following, this does no 2568 * harm, since the newline remains in the buffer and the 2569 * whole line is ignored. 2570 */ 2571 ParseUnreadc('\t'); 2572 goto line_read; 2573 } 2574 break; 2575 case '=': 2576 if (!semiNL) { 2577 /* 2578 * Haven't seen a dependency operator before this, so this 2579 * must be a variable assignment -- don't pay attention to 2580 * dependency operators after this. 2581 */ 2582 ignDepOp = TRUE; 2583 } else if (lastc == ':' || lastc == '!') { 2584 /* 2585 * Well, we've seen a dependency operator already, but it 2586 * was the previous character, so this is really just an 2587 * expanded variable assignment. Revert semi-colons to 2588 * being just semi-colons again and ignore any more 2589 * dependency operators. 2590 * 2591 * XXX: Note that a line like "foo : a:=b" will blow up, 2592 * but who'd write a line like that anyway? 2593 */ 2594 ignDepOp = TRUE; semiNL = FALSE; 2595 } 2596 break; 2597 case '#': 2598 if (!ignComment) { 2599 if ( 2600 #if 0 2601 compatMake && 2602 #endif 2603 (lastc != '\\')) { 2604 /* 2605 * If the character is a hash mark and it isn't escaped 2606 * (or we're being compatible), the thing is a comment. 2607 * Skip to the end of the line. 2608 */ 2609 do { 2610 c = ParseReadc(); 2611 /* 2612 * If we found a backslash not escaped 2613 * itself it means that the comment is 2614 * going to continue in the next line. 2615 */ 2616 if (c == '\\') 2617 ParseReadc(); 2618 } while ((c != '\n') && (c != EOF)); 2619 goto line_read; 2620 } else { 2621 /* 2622 * Don't add the backslash. Just let the # get copied 2623 * over. 2624 */ 2625 lastc = c; 2626 continue; 2627 } 2628 } 2629 break; 2630 case ':': 2631 case '!': 2632 if (!ignDepOp && (c == ':' || c == '!')) { 2633 /* 2634 * A semi-colon is recognized as a newline only on 2635 * dependency lines. Dependency lines are lines with a 2636 * colon or an exclamation point. Ergo... 2637 */ 2638 semiNL = TRUE; 2639 } 2640 break; 2641 } 2642 /* 2643 * Copy in the previous character and save this one in lastc. 2644 */ 2645 Buf_AddByte(buf, (Byte)lastc); 2646 lastc = c; 2647 2648 } 2649 line_read: 2650 curFile.lineno++; 2651 2652 if (lastc != '\0') { 2653 Buf_AddByte(buf, (Byte)lastc); 2654 } 2655 Buf_AddByte(buf, (Byte)'\0'); 2656 line = (char *)Buf_GetAll(buf, &lineLength); 2657 Buf_Destroy(buf, FALSE); 2658 2659 /* 2660 * Strip trailing blanks and tabs from the line. 2661 * Do not strip a blank or tab that is preceded by 2662 * a '\' 2663 */ 2664 ep = line; 2665 while (*ep) 2666 ++ep; 2667 while (ep > line + 1 && (ep[-1] == ' ' || ep[-1] == '\t')) { 2668 if (ep > line + 1 && ep[-2] == '\\') 2669 break; 2670 --ep; 2671 } 2672 *ep = 0; 2673 2674 if (line[0] == '.') { 2675 /* 2676 * The line might be a conditional. Ask the conditional module 2677 * about it and act accordingly 2678 */ 2679 switch (Cond_Eval(line)) { 2680 case COND_SKIP: 2681 /* 2682 * Skip to next conditional that evaluates to COND_PARSE. 2683 */ 2684 do { 2685 free(line); 2686 line = ParseSkipLine(1, 0); 2687 } while (line && Cond_Eval(line) != COND_PARSE); 2688 if (line == NULL) 2689 break; 2690 /*FALLTHRU*/ 2691 case COND_PARSE: 2692 free(line); 2693 line = ParseReadLine(); 2694 break; 2695 case COND_INVALID: 2696 lineno = curFile.lineno; 2697 if (For_Eval(line)) { 2698 int ok; 2699 free(line); 2700 do { 2701 /* 2702 * Skip after the matching end 2703 */ 2704 line = ParseSkipLine(0, 1); 2705 if (line == NULL) { 2706 Parse_Error(PARSE_FATAL, 2707 "Unexpected end of file in for loop.\n"); 2708 break; 2709 } 2710 ok = For_Eval(line); 2711 free(line); 2712 } 2713 while (ok); 2714 if (line != NULL) 2715 For_Run(lineno); 2716 line = ParseReadLine(); 2717 } 2718 break; 2719 } 2720 } 2721 return (line); 2722 2723 } else { 2724 /* 2725 * Hit end-of-file, so return a NULL line to indicate this. 2726 */ 2727 return(NULL); 2728 } 2729 } 2730 2731 /*- 2732 *----------------------------------------------------------------------- 2733 * ParseFinishLine -- 2734 * Handle the end of a dependency group. 2735 * 2736 * Results: 2737 * Nothing. 2738 * 2739 * Side Effects: 2740 * inLine set FALSE. 'targets' list destroyed. 2741 * 2742 *----------------------------------------------------------------------- 2743 */ 2744 static void 2745 ParseFinishLine(void) 2746 { 2747 if (inLine) { 2748 Lst_ForEach(targets, Suff_EndTransform, NULL); 2749 Lst_Destroy(targets, ParseHasCommands); 2750 targets = NULL; 2751 inLine = FALSE; 2752 } 2753 } 2754 2755 2756 /*- 2757 *--------------------------------------------------------------------- 2758 * Parse_File -- 2759 * Parse a file into its component parts, incorporating it into the 2760 * current dependency graph. This is the main function and controls 2761 * almost every other function in this module 2762 * 2763 * Input: 2764 * name the name of the file being read 2765 * stream Stream open to makefile to parse 2766 * 2767 * Results: 2768 * None 2769 * 2770 * Side Effects: 2771 * Loads. Nodes are added to the list of all targets, nodes and links 2772 * are added to the dependency graph. etc. etc. etc. 2773 *--------------------------------------------------------------------- 2774 */ 2775 void 2776 Parse_File(const char *name, FILE *stream) 2777 { 2778 char *cp; /* pointer into the line */ 2779 char *line; /* the line we're working on */ 2780 #ifndef POSIX 2781 Boolean nonSpace; 2782 #endif 2783 2784 inLine = FALSE; 2785 fatals = 0; 2786 2787 curFile.fname = UNCONST(name); 2788 curFile.F = stream; 2789 curFile.lineno = 0; 2790 2791 ParseSetParseFile(curFile.fname); 2792 2793 do { 2794 for (; (line = ParseReadLine()) != NULL; free(line)) { 2795 if (*line == '.') { 2796 /* 2797 * Lines that begin with the special character are either 2798 * include or undef directives. 2799 */ 2800 for (cp = line + 1; isspace ((unsigned char)*cp); cp++) { 2801 continue; 2802 } 2803 if (strncmp(cp, "include", 7) == 0 || 2804 ((cp[0] == 's' || cp[0] == '-') && 2805 strncmp(&cp[1], "include", 7) == 0)) { 2806 ParseDoInclude(cp); 2807 continue; 2808 } 2809 if (strncmp(cp, "undef", 5) == 0) { 2810 char *cp2; 2811 for (cp += 5; isspace((unsigned char) *cp); cp++) { 2812 continue; 2813 } 2814 2815 for (cp2 = cp; !isspace((unsigned char) *cp2) && 2816 (*cp2 != '\0'); cp2++) { 2817 continue; 2818 } 2819 2820 *cp2 = '\0'; 2821 2822 Var_Delete(cp, VAR_GLOBAL); 2823 continue; 2824 } 2825 } 2826 if (*line == '#') { 2827 /* If we're this far, the line must be a comment. */ 2828 continue; 2829 } 2830 2831 if (*line == '\t') { 2832 /* 2833 * If a line starts with a tab, it can only hope to be 2834 * a creation command. 2835 */ 2836 #ifndef POSIX 2837 shellCommand: 2838 #endif 2839 for (cp = line + 1; isspace ((unsigned char)*cp); cp++) { 2840 continue; 2841 } 2842 if (*cp) { 2843 if (!inLine) 2844 Parse_Error(PARSE_FATAL, 2845 "Unassociated shell command \"%s\"", 2846 cp); 2847 /* 2848 * So long as it's not a blank line and we're actually 2849 * in a dependency spec, add the command to the list of 2850 * commands of all targets in the dependency spec 2851 */ 2852 Lst_ForEach(targets, ParseAddCmd, cp); 2853 #ifdef CLEANUP 2854 Lst_AtEnd(targCmds, line); 2855 #endif 2856 line = 0; 2857 } 2858 continue; 2859 } 2860 2861 #ifdef SYSVINCLUDE 2862 if (((strncmp(line, "include", 7) == 0 && 2863 isspace((unsigned char) line[7])) || 2864 ((line[0] == 's' || line[0] == '-') && 2865 strncmp(&line[1], "include", 7) == 0 && 2866 isspace((unsigned char) line[8]))) && 2867 strchr(line, ':') == NULL) { 2868 /* 2869 * It's an S3/S5-style "include". 2870 */ 2871 ParseTraditionalInclude(line); 2872 continue; 2873 } 2874 #endif 2875 if (Parse_IsVar(line)) { 2876 ParseFinishLine(); 2877 Parse_DoVar(line, VAR_GLOBAL); 2878 continue; 2879 } 2880 2881 /* 2882 * We now know it's a dependency line so it needs to have all 2883 * variables expanded before being parsed. Tell the variable 2884 * module to complain if some variable is undefined... 2885 * To make life easier on novices, if the line is indented we 2886 * first make sure the line has a dependency operator in it. 2887 * If it doesn't have an operator and we're in a dependency 2888 * line's script, we assume it's actually a shell command 2889 * and add it to the current list of targets. 2890 */ 2891 #ifndef POSIX 2892 nonSpace = FALSE; 2893 #endif 2894 2895 cp = line; 2896 if (isspace((unsigned char) line[0])) { 2897 while ((*cp != '\0') && isspace((unsigned char) *cp)) { 2898 cp++; 2899 } 2900 if (*cp == '\0') { 2901 /* Ignore blank line in commands */ 2902 continue; 2903 } 2904 #ifndef POSIX 2905 while (*cp && (ParseIsEscaped(line, cp) || 2906 (*cp != ':') && (*cp != '!'))) { 2907 nonSpace = TRUE; 2908 cp++; 2909 } 2910 #endif 2911 } 2912 2913 #ifndef POSIX 2914 if (*cp == '\0') { 2915 if (inLine) { 2916 Parse_Error(PARSE_WARNING, 2917 "Shell command needs a leading tab"); 2918 goto shellCommand; 2919 } else if (nonSpace) { 2920 Parse_Error(PARSE_FATAL, "Missing operator"); 2921 } 2922 continue; 2923 } 2924 #endif 2925 ParseFinishLine(); 2926 2927 cp = Var_Subst(NULL, line, VAR_CMD, TRUE); 2928 free(line); 2929 line = cp; 2930 2931 /* 2932 * Need a non-circular list for the target nodes 2933 */ 2934 if (targets) 2935 Lst_Destroy(targets, NOFREE); 2936 2937 targets = Lst_Init(FALSE); 2938 inLine = TRUE; 2939 2940 ParseDoDependency(line); 2941 } 2942 /* 2943 * Reached EOF, but it may be just EOF of an include file... 2944 */ 2945 } while (ParseEOF(1) == CONTINUE); 2946 2947 /* 2948 * Make sure conditionals are clean 2949 */ 2950 Cond_End(); 2951 2952 if (fatals) { 2953 (void)fprintf(stderr, 2954 "%s: Fatal errors encountered -- cannot continue\n", 2955 progname); 2956 PrintOnError(NULL); 2957 exit(1); 2958 } 2959 } 2960 2961 /*- 2962 *--------------------------------------------------------------------- 2963 * Parse_Init -- 2964 * initialize the parsing module 2965 * 2966 * Results: 2967 * none 2968 * 2969 * Side Effects: 2970 * the parseIncPath list is initialized... 2971 *--------------------------------------------------------------------- 2972 */ 2973 void 2974 Parse_Init(void) 2975 { 2976 mainNode = NILGNODE; 2977 parseIncPath = Lst_Init(FALSE); 2978 sysIncPath = Lst_Init(FALSE); 2979 defIncPath = Lst_Init(FALSE); 2980 includes = Lst_Init(FALSE); 2981 #ifdef CLEANUP 2982 targCmds = Lst_Init(FALSE); 2983 #endif 2984 } 2985 2986 void 2987 Parse_End(void) 2988 { 2989 #ifdef CLEANUP 2990 Lst_Destroy(targCmds, (FreeProc *)free); 2991 if (targets) 2992 Lst_Destroy(targets, NOFREE); 2993 Lst_Destroy(defIncPath, Dir_Destroy); 2994 Lst_Destroy(sysIncPath, Dir_Destroy); 2995 Lst_Destroy(parseIncPath, Dir_Destroy); 2996 Lst_Destroy(includes, NOFREE); /* Should be empty now */ 2997 #endif 2998 } 2999 3000 3001 /*- 3002 *----------------------------------------------------------------------- 3003 * Parse_MainName -- 3004 * Return a Lst of the main target to create for main()'s sake. If 3005 * no such target exists, we Punt with an obnoxious error message. 3006 * 3007 * Results: 3008 * A Lst of the single node to create. 3009 * 3010 * Side Effects: 3011 * None. 3012 * 3013 *----------------------------------------------------------------------- 3014 */ 3015 Lst 3016 Parse_MainName(void) 3017 { 3018 Lst mainList; /* result list */ 3019 3020 mainList = Lst_Init(FALSE); 3021 3022 if (mainNode == NILGNODE) { 3023 Punt("no target to make."); 3024 /*NOTREACHED*/ 3025 } else if (mainNode->type & OP_DOUBLEDEP) { 3026 (void)Lst_AtEnd(mainList, mainNode); 3027 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW); 3028 } 3029 else 3030 (void)Lst_AtEnd(mainList, mainNode); 3031 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL); 3032 return (mainList); 3033 } 3034 3035 /*- 3036 *----------------------------------------------------------------------- 3037 * ParseMark -- 3038 * Add the filename and lineno to the GNode so that we remember 3039 * where it was first defined. 3040 * 3041 * Side Effects: 3042 * None. 3043 * 3044 *----------------------------------------------------------------------- 3045 */ 3046 static void 3047 ParseMark(GNode *gn) 3048 { 3049 gn->fname = strdup(curFile.fname); 3050 gn->lineno = curFile.lineno; 3051 } 3052