parse.c revision 1.109
1 /* $NetBSD: parse.c,v 1.109 2006/02/11 20:59:49 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 1.109 2006/02/11 20:59:49 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 1.109 2006/02/11 20:59:49 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 allsrc; 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, (ClientData)cgn); 515 if (specType == Not) 516 (void)Lst_AtEnd(cgn->parents, (ClientData)pgn); 517 pgn->unmade += 1; 518 if (DEBUG(PARSE)) { 519 printf("# 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, (ClientData)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 * 617 *--------------------------------------------------------------------- 618 */ 619 static int 620 ParseAddDep(ClientData pp, ClientData sp) 621 { 622 GNode *p = (GNode *)pp; 623 GNode *s = (GNode *)sp; 624 625 if (DEBUG(PARSE)) 626 printf("ParseAddDep: %p(%s):%d %p(%s):%d\n", 627 p, p->name, p->order, s, s->name, s->order); 628 if (p->order >= s->order) 629 return 1; 630 631 /* 632 * XXX: This can cause loops, and loops can cause unmade targets, 633 * but checking is tedious, and the debugging output can show the 634 * problem 635 */ 636 (void)Lst_AtEnd(p->successors, (ClientData)s); 637 (void)Lst_AtEnd(s->preds, (ClientData)p); 638 if (DEBUG(PARSE)) { 639 printf("# ParseAddDep: added .WAIT dependency %s - %s\n", 640 p->name, s->name); 641 Targ_PrintNode(p, 0); 642 Targ_PrintNode(s, 0); 643 } 644 return 0; 645 } 646 647 /* - 648 *--------------------------------------------------------------------- 649 * ParseDoSpecialSrc -- 650 * ParseDoSrc struck an unexpanded variable in a src. 651 * The most likely reason is a src that refers to .TARGET or 652 * .PREFIX so we get called to set those for each target 653 * and then call ParseDoSrc again to do the real work. 654 * 655 * Input: 656 * tp A target GNode * 657 * sp A SpecialSrc * which contains the args we need 658 * for ParseDoSrc. 659 * 660 * Results: 661 * Goodness 662 * 663 * Side Effects: 664 * The target GNode will have .TARGET and .PREFIX set, this seems 665 * harmless. 666 */ 667 static int 668 ParseDoSpecialSrc(ClientData tp, ClientData sp) 669 { 670 GNode *tn = (GNode *)tp; 671 GNode *gn; 672 SpecialSrc *ss = (SpecialSrc *)sp; 673 char *cp; 674 char *cp2; 675 char *pref; 676 677 /* 678 * If the target is a suffix rule, leave it alone. 679 */ 680 if (Suff_IsTransform(tn->name)) { 681 ParseDoSrc(ss->op, ss->src, ss->allsrc, FALSE); /* don't come back */ 682 return 0; 683 } 684 Var_Set(TARGET, tn->name, tn, 0); 685 if ((pref = strrchr(tn->name, '/'))) 686 pref++; 687 else 688 pref = tn->name; 689 if ((cp2 = strchr(pref, '.')) > pref) { 690 cp = estrdup(pref); 691 cp[cp2 - pref] = '\0'; 692 Var_Set(PREFIX, cp, tn, 0); 693 free(cp); 694 } else 695 Var_Set(PREFIX, pref, tn, 0); 696 cp = Var_Subst(NULL, ss->src, tn, FALSE); 697 if (strchr(cp, '$')) { 698 Parse_Error(PARSE_WARNING, "Cannot resolve '%s' here", ss->src); 699 ParseDoSrc(ss->op, ss->src, ss->allsrc, FALSE); /* don't come back */ 700 return 1; /* stop list traversal */ 701 } 702 /* 703 * We don't want to make every target dependent on sources for 704 * other targets. This is the bit of ParseDoSrc which is relevant. 705 * The main difference is we don't link the resolved src to all targets. 706 */ 707 gn = Targ_FindNode(cp, TARG_CREATE); 708 if (ss->op) { 709 gn->type |= ss->op; 710 } else { 711 ParseLinkSrc((ClientData)tn, (ClientData)gn); 712 } 713 if (DEBUG(PARSE)) 714 printf("ParseDoSpecialSrc: set %p(%s):%d (was %d)\n", 715 gn, gn->name, waiting, gn->order); 716 gn->order = waiting; 717 (void)Lst_AtEnd(ss->allsrc, (ClientData)gn); 718 if (waiting) { 719 Lst_ForEach(ss->allsrc, ParseAddDep, (ClientData)gn); 720 } 721 return 0; 722 } 723 724 725 /*- 726 *--------------------------------------------------------------------- 727 * ParseDoSrc -- 728 * Given the name of a source, figure out if it is an attribute 729 * and apply it to the targets if it is. Else decide if there is 730 * some attribute which should be applied *to* the source because 731 * of some special target and apply it if so. Otherwise, make the 732 * source be a child of the targets in the list 'targets' 733 * 734 * Input: 735 * tOp operator (if any) from special targets 736 * src name of the source to handle 737 * allsrc List of all sources to wait for 738 * resolve boolean - should we try and resolve .TARGET refs. 739 * 740 * Results: 741 * None 742 * 743 * Side Effects: 744 * Operator bits may be added to the list of targets or to the source. 745 * The targets may have a new source added to their lists of children. 746 *--------------------------------------------------------------------- 747 */ 748 static void 749 ParseDoSrc(int tOp, char *src, Lst allsrc, Boolean resolve) 750 { 751 GNode *gn = NULL; 752 753 if (*src == '.' && isupper ((unsigned char)src[1])) { 754 int keywd = ParseFindKeyword(src); 755 if (keywd != -1) { 756 int op = parseKeywords[keywd].op; 757 if (op != 0) { 758 Lst_ForEach(targets, ParseDoOp, (ClientData)&op); 759 return; 760 } 761 if (parseKeywords[keywd].spec == Wait) { 762 waiting++; 763 return; 764 } 765 } 766 } 767 768 switch (specType) { 769 case Main: 770 /* 771 * If we have noted the existence of a .MAIN, it means we need 772 * to add the sources of said target to the list of things 773 * to create. The string 'src' is likely to be free, so we 774 * must make a new copy of it. Note that this will only be 775 * invoked if the user didn't specify a target on the command 776 * line. This is to allow #ifmake's to succeed, or something... 777 */ 778 (void)Lst_AtEnd(create, (ClientData)estrdup(src)); 779 /* 780 * Add the name to the .TARGETS variable as well, so the user cna 781 * employ that, if desired. 782 */ 783 Var_Append(".TARGETS", src, VAR_GLOBAL); 784 return; 785 786 case Order: 787 /* 788 * Create proper predecessor/successor links between the previous 789 * source and the current one. 790 */ 791 gn = Targ_FindNode(src, TARG_CREATE); 792 if (predecessor != NILGNODE) { 793 (void)Lst_AtEnd(predecessor->successors, (ClientData)gn); 794 (void)Lst_AtEnd(gn->preds, (ClientData)predecessor); 795 if (DEBUG(PARSE)) { 796 printf("# ParseDoSrc: added Order dependency %s - %s\n", 797 predecessor->name, gn->name); 798 Targ_PrintNode(predecessor, 0); 799 Targ_PrintNode(gn, 0); 800 } 801 } 802 /* 803 * The current source now becomes the predecessor for the next one. 804 */ 805 predecessor = gn; 806 break; 807 808 default: 809 /* 810 * If the source is not an attribute, we need to find/create 811 * a node for it. After that we can apply any operator to it 812 * from a special target or link it to its parents, as 813 * appropriate. 814 * 815 * In the case of a source that was the object of a :: operator, 816 * the attribute is applied to all of its instances (as kept in 817 * the 'cohorts' list of the node) or all the cohorts are linked 818 * to all the targets. 819 */ 820 if (resolve && strchr(src, '$')) { 821 SpecialSrc ss; 822 823 ss.op = tOp; 824 ss.src = src; 825 ss.allsrc = allsrc; 826 827 /* 828 * If src cannot be fully resolved, we'll be called again 829 * with resolve==FALSE. 830 */ 831 Lst_ForEach(targets, ParseDoSpecialSrc, (ClientData)&ss); 832 return; 833 } 834 gn = Targ_FindNode(src, TARG_CREATE); 835 if (tOp) { 836 gn->type |= tOp; 837 } else { 838 Lst_ForEach(targets, ParseLinkSrc, (ClientData)gn); 839 } 840 break; 841 } 842 843 if (DEBUG(PARSE)) 844 printf("ParseDoSrc: set %p(%s):%d (was %d)\n", 845 gn, gn->name, waiting, gn->order); 846 gn->order = waiting; 847 (void)Lst_AtEnd(allsrc, (ClientData)gn); 848 if (waiting) { 849 Lst_ForEach(allsrc, ParseAddDep, (ClientData)gn); 850 } 851 } 852 853 /*- 854 *----------------------------------------------------------------------- 855 * ParseFindMain -- 856 * Find a real target in the list and set it to be the main one. 857 * Called by ParseDoDependency when a main target hasn't been found 858 * yet. 859 * 860 * Input: 861 * gnp Node to examine 862 * 863 * Results: 864 * 0 if main not found yet, 1 if it is. 865 * 866 * Side Effects: 867 * mainNode is changed and Targ_SetMain is called. 868 * 869 *----------------------------------------------------------------------- 870 */ 871 static int 872 ParseFindMain(ClientData gnp, ClientData dummy) 873 { 874 GNode *gn = (GNode *)gnp; 875 if ((gn->type & OP_NOTARGET) == 0) { 876 mainNode = gn; 877 Targ_SetMain(gn); 878 return (dummy ? 1 : 1); 879 } else { 880 return (dummy ? 0 : 0); 881 } 882 } 883 884 /*- 885 *----------------------------------------------------------------------- 886 * ParseAddDir -- 887 * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going 888 * 889 * Results: 890 * === 0 891 * 892 * Side Effects: 893 * See Dir_AddDir. 894 * 895 *----------------------------------------------------------------------- 896 */ 897 static int 898 ParseAddDir(ClientData path, ClientData name) 899 { 900 (void)Dir_AddDir((Lst) path, (char *)name); 901 return(0); 902 } 903 904 /*- 905 *----------------------------------------------------------------------- 906 * ParseClearPath -- 907 * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going 908 * 909 * Results: 910 * === 0 911 * 912 * Side Effects: 913 * See Dir_ClearPath 914 * 915 *----------------------------------------------------------------------- 916 */ 917 static int 918 ParseClearPath(ClientData path, ClientData dummy) 919 { 920 Dir_ClearPath((Lst) path); 921 return(dummy ? 0 : 0); 922 } 923 924 /*- 925 *--------------------------------------------------------------------- 926 * ParseDoDependency -- 927 * Parse the dependency line in line. 928 * 929 * Input: 930 * line the line to parse 931 * 932 * Results: 933 * None 934 * 935 * Side Effects: 936 * The nodes of the sources are linked as children to the nodes of the 937 * targets. Some nodes may be created. 938 * 939 * We parse a dependency line by first extracting words from the line and 940 * finding nodes in the list of all targets with that name. This is done 941 * until a character is encountered which is an operator character. Currently 942 * these are only ! and :. At this point the operator is parsed and the 943 * pointer into the line advanced until the first source is encountered. 944 * The parsed operator is applied to each node in the 'targets' list, 945 * which is where the nodes found for the targets are kept, by means of 946 * the ParseDoOp function. 947 * The sources are read in much the same way as the targets were except 948 * that now they are expanded using the wildcarding scheme of the C-Shell 949 * and all instances of the resulting words in the list of all targets 950 * are found. Each of the resulting nodes is then linked to each of the 951 * targets as one of its children. 952 * Certain targets are handled specially. These are the ones detailed 953 * by the specType variable. 954 * The storing of transformation rules is also taken care of here. 955 * A target is recognized as a transformation rule by calling 956 * Suff_IsTransform. If it is a transformation rule, its node is gotten 957 * from the suffix module via Suff_AddTransform rather than the standard 958 * Targ_FindNode in the target module. 959 *--------------------------------------------------------------------- 960 */ 961 static void 962 ParseDoDependency(char *line) 963 { 964 char *cp; /* our current position */ 965 GNode *gn = NULL; /* a general purpose temporary node */ 966 int op; /* the operator on the line */ 967 char savec; /* a place to save a character */ 968 Lst paths; /* List of search paths to alter when parsing 969 * a list of .PATH targets */ 970 int tOp; /* operator from special target */ 971 Lst sources; /* list of archive source names after 972 * expansion */ 973 Lst curTargs; /* list of target names to be found and added 974 * to the targets list */ 975 Lst curSrcs; /* list of sources in order */ 976 char *lstart = line; 977 Boolean hasWait; /* is .WAIT present in srcs */ 978 979 tOp = 0; 980 981 specType = Not; 982 waiting = 0; 983 paths = (Lst)NULL; 984 985 curTargs = Lst_Init(FALSE); 986 curSrcs = Lst_Init(FALSE); 987 988 do { 989 for (cp = line; 990 *cp && (ParseIsEscaped(lstart, cp) || 991 (!isspace ((unsigned char)*cp) && 992 (*cp != '!') && (*cp != ':') && (*cp != LPAREN))); 993 cp++) 994 { 995 if (*cp == '$') { 996 /* 997 * Must be a dynamic source (would have been expanded 998 * otherwise), so call the Var module to parse the puppy 999 * so we can safely advance beyond it...There should be 1000 * no errors in this, as they would have been discovered 1001 * in the initial Var_Subst and we wouldn't be here. 1002 */ 1003 int length; 1004 Boolean freeIt; 1005 char *result; 1006 1007 result=Var_Parse(cp, VAR_CMD, TRUE, &length, &freeIt); 1008 1009 if (freeIt) { 1010 free(result); 1011 } 1012 cp += length-1; 1013 } 1014 continue; 1015 } 1016 if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) { 1017 /* 1018 * Archives must be handled specially to make sure the OP_ARCHV 1019 * flag is set in their 'type' field, for one thing, and because 1020 * things like "archive(file1.o file2.o file3.o)" are permissible. 1021 * Arch_ParseArchive will set 'line' to be the first non-blank 1022 * after the archive-spec. It creates/finds nodes for the members 1023 * and places them on the given list, returning SUCCESS if all 1024 * went well and FAILURE if there was an error in the 1025 * specification. On error, line should remain untouched. 1026 */ 1027 if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) { 1028 Parse_Error(PARSE_FATAL, 1029 "Error in archive specification: \"%s\"", line); 1030 return; 1031 } else { 1032 continue; 1033 } 1034 } 1035 savec = *cp; 1036 1037 if (!*cp) { 1038 /* 1039 * Ending a dependency line without an operator is a Bozo 1040 * no-no. As a heuristic, this is also often triggered by 1041 * undetected conflicts from cvs/rcs merges. 1042 */ 1043 if ((strncmp(line, "<<<<<<", 6) == 0) || 1044 (strncmp(line, "======", 6) == 0) || 1045 (strncmp(line, ">>>>>>", 6) == 0)) 1046 Parse_Error(PARSE_FATAL, 1047 "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts"); 1048 else 1049 Parse_Error(PARSE_FATAL, "Need an operator"); 1050 return; 1051 } 1052 *cp = '\0'; 1053 /* 1054 * Have a word in line. See if it's a special target and set 1055 * specType to match it. 1056 */ 1057 if (*line == '.' && isupper ((unsigned char)line[1])) { 1058 /* 1059 * See if the target is a special target that must have it 1060 * or its sources handled specially. 1061 */ 1062 int keywd = ParseFindKeyword(line); 1063 if (keywd != -1) { 1064 if (specType == ExPath && parseKeywords[keywd].spec != ExPath) { 1065 Parse_Error(PARSE_FATAL, "Mismatched special targets"); 1066 return; 1067 } 1068 1069 specType = parseKeywords[keywd].spec; 1070 tOp = parseKeywords[keywd].op; 1071 1072 /* 1073 * Certain special targets have special semantics: 1074 * .PATH Have to set the dirSearchPath 1075 * variable too 1076 * .MAIN Its sources are only used if 1077 * nothing has been specified to 1078 * create. 1079 * .DEFAULT Need to create a node to hang 1080 * commands on, but we don't want 1081 * it in the graph, nor do we want 1082 * it to be the Main Target, so we 1083 * create it, set OP_NOTMAIN and 1084 * add it to the list, setting 1085 * DEFAULT to the new node for 1086 * later use. We claim the node is 1087 * A transformation rule to make 1088 * life easier later, when we'll 1089 * use Make_HandleUse to actually 1090 * apply the .DEFAULT commands. 1091 * .PHONY The list of targets 1092 * .NOPATH Don't search for file in the path 1093 * .BEGIN 1094 * .END 1095 * .INTERRUPT Are not to be considered the 1096 * main target. 1097 * .NOTPARALLEL Make only one target at a time. 1098 * .SINGLESHELL Create a shell for each command. 1099 * .ORDER Must set initial predecessor to NIL 1100 */ 1101 switch (specType) { 1102 case ExPath: 1103 if (paths == NULL) { 1104 paths = Lst_Init(FALSE); 1105 } 1106 (void)Lst_AtEnd(paths, (ClientData)dirSearchPath); 1107 break; 1108 case Main: 1109 if (!Lst_IsEmpty(create)) { 1110 specType = Not; 1111 } 1112 break; 1113 case Begin: 1114 case End: 1115 case Interrupt: 1116 gn = Targ_FindNode(line, TARG_CREATE); 1117 gn->type |= OP_NOTMAIN|OP_SPECIAL; 1118 (void)Lst_AtEnd(targets, (ClientData)gn); 1119 break; 1120 case Default: 1121 gn = Targ_NewGN(".DEFAULT"); 1122 gn->type |= (OP_NOTMAIN|OP_TRANSFORM); 1123 (void)Lst_AtEnd(targets, (ClientData)gn); 1124 DEFAULT = gn; 1125 break; 1126 case NotParallel: 1127 not_parallel = 1; 1128 break; 1129 case SingleShell: 1130 compatMake = TRUE; 1131 break; 1132 case Order: 1133 predecessor = NILGNODE; 1134 break; 1135 default: 1136 break; 1137 } 1138 } else if (strncmp(line, ".PATH", 5) == 0) { 1139 /* 1140 * .PATH<suffix> has to be handled specially. 1141 * Call on the suffix module to give us a path to 1142 * modify. 1143 */ 1144 Lst path; 1145 1146 specType = ExPath; 1147 path = Suff_GetPath(&line[5]); 1148 if (path == NILLST) { 1149 Parse_Error(PARSE_FATAL, 1150 "Suffix '%s' not defined (yet)", 1151 &line[5]); 1152 return; 1153 } else { 1154 if (paths == (Lst)NULL) { 1155 paths = Lst_Init(FALSE); 1156 } 1157 (void)Lst_AtEnd(paths, (ClientData)path); 1158 } 1159 } 1160 } 1161 1162 /* 1163 * Have word in line. Get or create its node and stick it at 1164 * the end of the targets list 1165 */ 1166 if ((specType == Not) && (*line != '\0')) { 1167 if (Dir_HasWildcards(line)) { 1168 /* 1169 * Targets are to be sought only in the current directory, 1170 * so create an empty path for the thing. Note we need to 1171 * use Dir_Destroy in the destruction of the path as the 1172 * Dir module could have added a directory to the path... 1173 */ 1174 Lst emptyPath = Lst_Init(FALSE); 1175 1176 Dir_Expand(line, emptyPath, curTargs); 1177 1178 Lst_Destroy(emptyPath, Dir_Destroy); 1179 } else { 1180 /* 1181 * No wildcards, but we want to avoid code duplication, 1182 * so create a list with the word on it. 1183 */ 1184 (void)Lst_AtEnd(curTargs, (ClientData)line); 1185 } 1186 1187 while(!Lst_IsEmpty(curTargs)) { 1188 char *targName = (char *)Lst_DeQueue(curTargs); 1189 1190 if (!Suff_IsTransform (targName)) { 1191 gn = Targ_FindNode(targName, TARG_CREATE); 1192 } else { 1193 gn = Suff_AddTransform(targName); 1194 } 1195 1196 (void)Lst_AtEnd(targets, (ClientData)gn); 1197 } 1198 } else if (specType == ExPath && *line != '.' && *line != '\0') { 1199 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line); 1200 } 1201 1202 *cp = savec; 1203 /* 1204 * If it is a special type and not .PATH, it's the only target we 1205 * allow on this line... 1206 */ 1207 if (specType != Not && specType != ExPath) { 1208 Boolean warn = FALSE; 1209 1210 while (*cp && (ParseIsEscaped(lstart, cp) || 1211 ((*cp != '!') && (*cp != ':')))) { 1212 if (ParseIsEscaped(lstart, cp) || 1213 (*cp != ' ' && *cp != '\t')) { 1214 warn = TRUE; 1215 } 1216 cp++; 1217 } 1218 if (warn) { 1219 Parse_Error(PARSE_WARNING, "Extra target ignored"); 1220 } 1221 } else { 1222 while (*cp && isspace ((unsigned char)*cp)) { 1223 cp++; 1224 } 1225 } 1226 line = cp; 1227 } while (*line && (ParseIsEscaped(lstart, line) || 1228 ((*line != '!') && (*line != ':')))); 1229 1230 /* 1231 * Don't need the list of target names anymore... 1232 */ 1233 Lst_Destroy(curTargs, NOFREE); 1234 1235 if (!Lst_IsEmpty(targets)) { 1236 switch(specType) { 1237 default: 1238 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored"); 1239 break; 1240 case Default: 1241 case Begin: 1242 case End: 1243 case Interrupt: 1244 /* 1245 * These four create nodes on which to hang commands, so 1246 * targets shouldn't be empty... 1247 */ 1248 case Not: 1249 /* 1250 * Nothing special here -- targets can be empty if it wants. 1251 */ 1252 break; 1253 } 1254 } 1255 1256 /* 1257 * Have now parsed all the target names. Must parse the operator next. The 1258 * result is left in op . 1259 */ 1260 if (*cp == '!') { 1261 op = OP_FORCE; 1262 } else if (*cp == ':') { 1263 if (cp[1] == ':') { 1264 op = OP_DOUBLEDEP; 1265 cp++; 1266 } else { 1267 op = OP_DEPENDS; 1268 } 1269 } else { 1270 Parse_Error(PARSE_FATAL, "Missing dependency operator"); 1271 return; 1272 } 1273 1274 cp++; /* Advance beyond operator */ 1275 1276 Lst_ForEach(targets, ParseDoOp, (ClientData)&op); 1277 1278 /* 1279 * Get to the first source 1280 */ 1281 while (*cp && isspace ((unsigned char)*cp)) { 1282 cp++; 1283 } 1284 line = cp; 1285 1286 /* 1287 * Several special targets take different actions if present with no 1288 * sources: 1289 * a .SUFFIXES line with no sources clears out all old suffixes 1290 * a .PRECIOUS line makes all targets precious 1291 * a .IGNORE line ignores errors for all targets 1292 * a .SILENT line creates silence when making all targets 1293 * a .PATH removes all directories from the search path(s). 1294 */ 1295 if (!*line) { 1296 switch (specType) { 1297 case Suffixes: 1298 Suff_ClearSuffixes(); 1299 break; 1300 case Precious: 1301 allPrecious = TRUE; 1302 break; 1303 case Ignore: 1304 ignoreErrors = TRUE; 1305 break; 1306 case Silent: 1307 beSilent = TRUE; 1308 break; 1309 case ExPath: 1310 Lst_ForEach(paths, ParseClearPath, (ClientData)NULL); 1311 Dir_SetPATH(); 1312 break; 1313 #ifdef POSIX 1314 case Posix: 1315 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0); 1316 break; 1317 #endif 1318 default: 1319 break; 1320 } 1321 } else if (specType == MFlags) { 1322 /* 1323 * Call on functions in main.c to deal with these arguments and 1324 * set the initial character to a null-character so the loop to 1325 * get sources won't get anything 1326 */ 1327 Main_ParseArgLine(line); 1328 *line = '\0'; 1329 } else if (specType == ExShell) { 1330 if (Job_ParseShell(line) != SUCCESS) { 1331 Parse_Error(PARSE_FATAL, "improper shell specification"); 1332 return; 1333 } 1334 *line = '\0'; 1335 } else if ((specType == NotParallel) || (specType == SingleShell)) { 1336 *line = '\0'; 1337 } 1338 1339 /* 1340 * NOW GO FOR THE SOURCES 1341 */ 1342 if ((specType == Suffixes) || (specType == ExPath) || 1343 (specType == Includes) || (specType == Libs) || 1344 (specType == Null) || (specType == ExObjdir)) 1345 { 1346 while (*line) { 1347 /* 1348 * If the target was one that doesn't take files as its sources 1349 * but takes something like suffixes, we take each 1350 * space-separated word on the line as a something and deal 1351 * with it accordingly. 1352 * 1353 * If the target was .SUFFIXES, we take each source as a 1354 * suffix and add it to the list of suffixes maintained by the 1355 * Suff module. 1356 * 1357 * If the target was a .PATH, we add the source as a directory 1358 * to search on the search path. 1359 * 1360 * If it was .INCLUDES, the source is taken to be the suffix of 1361 * files which will be #included and whose search path should 1362 * be present in the .INCLUDES variable. 1363 * 1364 * If it was .LIBS, the source is taken to be the suffix of 1365 * files which are considered libraries and whose search path 1366 * should be present in the .LIBS variable. 1367 * 1368 * If it was .NULL, the source is the suffix to use when a file 1369 * has no valid suffix. 1370 * 1371 * If it was .OBJDIR, the source is a new definition for .OBJDIR, 1372 * and will cause make to do a new chdir to that path. 1373 */ 1374 while (*cp && !isspace ((unsigned char)*cp)) { 1375 cp++; 1376 } 1377 savec = *cp; 1378 *cp = '\0'; 1379 switch (specType) { 1380 case Suffixes: 1381 Suff_AddSuffix(line, &mainNode); 1382 break; 1383 case ExPath: 1384 Lst_ForEach(paths, ParseAddDir, (ClientData)line); 1385 break; 1386 case Includes: 1387 Suff_AddInclude(line); 1388 break; 1389 case Libs: 1390 Suff_AddLib(line); 1391 break; 1392 case Null: 1393 Suff_SetNull(line); 1394 break; 1395 case ExObjdir: 1396 Main_SetObjdir(line); 1397 break; 1398 default: 1399 break; 1400 } 1401 *cp = savec; 1402 if (savec != '\0') { 1403 cp++; 1404 } 1405 while (*cp && isspace ((unsigned char)*cp)) { 1406 cp++; 1407 } 1408 line = cp; 1409 } 1410 if (paths) { 1411 Lst_Destroy(paths, NOFREE); 1412 } 1413 if (specType == ExPath) 1414 Dir_SetPATH(); 1415 } else { 1416 /* 1417 * We don't need ParseDoSpecialSrc unless .WAIT is present. 1418 */ 1419 hasWait = (strstr(line, ".WAIT") != NULL); 1420 1421 while (*line) { 1422 /* 1423 * The targets take real sources, so we must beware of archive 1424 * specifications (i.e. things with left parentheses in them) 1425 * and handle them accordingly. 1426 */ 1427 while (*cp && !isspace ((unsigned char)*cp)) { 1428 if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) { 1429 /* 1430 * Only stop for a left parenthesis if it isn't at the 1431 * start of a word (that'll be for variable changes 1432 * later) and isn't preceded by a dollar sign (a dynamic 1433 * source). 1434 */ 1435 break; 1436 } else { 1437 cp++; 1438 } 1439 } 1440 1441 if (*cp == LPAREN) { 1442 sources = Lst_Init(FALSE); 1443 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) { 1444 Parse_Error(PARSE_FATAL, 1445 "Error in source archive spec \"%s\"", line); 1446 return; 1447 } 1448 1449 while (!Lst_IsEmpty (sources)) { 1450 gn = (GNode *)Lst_DeQueue(sources); 1451 ParseDoSrc(tOp, gn->name, curSrcs, hasWait); 1452 } 1453 Lst_Destroy(sources, NOFREE); 1454 cp = line; 1455 } else { 1456 if (*cp) { 1457 *cp = '\0'; 1458 cp += 1; 1459 } 1460 1461 ParseDoSrc(tOp, line, curSrcs, hasWait); 1462 } 1463 while (*cp && isspace ((unsigned char)*cp)) { 1464 cp++; 1465 } 1466 line = cp; 1467 } 1468 } 1469 1470 if (mainNode == NILGNODE) { 1471 /* 1472 * If we have yet to decide on a main target to make, in the 1473 * absence of any user input, we want the first target on 1474 * the first dependency line that is actually a real target 1475 * (i.e. isn't a .USE or .EXEC rule) to be made. 1476 */ 1477 Lst_ForEach(targets, ParseFindMain, (ClientData)0); 1478 } 1479 1480 /* 1481 * Finally, destroy the list of sources 1482 */ 1483 Lst_Destroy(curSrcs, NOFREE); 1484 } 1485 1486 /*- 1487 *--------------------------------------------------------------------- 1488 * Parse_IsVar -- 1489 * Return TRUE if the passed line is a variable assignment. A variable 1490 * assignment consists of a single word followed by optional whitespace 1491 * followed by either a += or an = operator. 1492 * This function is used both by the Parse_File function and main when 1493 * parsing the command-line arguments. 1494 * 1495 * Input: 1496 * line the line to check 1497 * 1498 * Results: 1499 * TRUE if it is. FALSE if it ain't 1500 * 1501 * Side Effects: 1502 * none 1503 *--------------------------------------------------------------------- 1504 */ 1505 Boolean 1506 Parse_IsVar(char *line) 1507 { 1508 Boolean wasSpace = FALSE; /* set TRUE if found a space */ 1509 Boolean haveName = FALSE; /* Set TRUE if have a variable name */ 1510 int level = 0; 1511 #define ISEQOPERATOR(c) \ 1512 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!')) 1513 1514 /* 1515 * Skip to variable name 1516 */ 1517 for (;(*line == ' ') || (*line == '\t'); line++) 1518 continue; 1519 1520 for (; *line != '=' || level != 0; line++) 1521 switch (*line) { 1522 case '\0': 1523 /* 1524 * end-of-line -- can't be a variable assignment. 1525 */ 1526 return FALSE; 1527 1528 case ' ': 1529 case '\t': 1530 /* 1531 * there can be as much white space as desired so long as there is 1532 * only one word before the operator 1533 */ 1534 wasSpace = TRUE; 1535 break; 1536 1537 case LPAREN: 1538 case '{': 1539 level++; 1540 break; 1541 1542 case '}': 1543 case RPAREN: 1544 level--; 1545 break; 1546 1547 default: 1548 if (wasSpace && haveName) { 1549 if (ISEQOPERATOR(*line)) { 1550 /* 1551 * We must have a finished word 1552 */ 1553 if (level != 0) 1554 return FALSE; 1555 1556 /* 1557 * When an = operator [+?!:] is found, the next 1558 * character must be an = or it ain't a valid 1559 * assignment. 1560 */ 1561 if (line[1] == '=') 1562 return haveName; 1563 #ifdef SUNSHCMD 1564 /* 1565 * This is a shell command 1566 */ 1567 if (strncmp(line, ":sh", 3) == 0) 1568 return haveName; 1569 #endif 1570 } 1571 /* 1572 * This is the start of another word, so not assignment. 1573 */ 1574 return FALSE; 1575 } 1576 else { 1577 haveName = TRUE; 1578 wasSpace = FALSE; 1579 } 1580 break; 1581 } 1582 1583 return haveName; 1584 } 1585 1586 /*- 1587 *--------------------------------------------------------------------- 1588 * Parse_DoVar -- 1589 * Take the variable assignment in the passed line and do it in the 1590 * global context. 1591 * 1592 * Note: There is a lexical ambiguity with assignment modifier characters 1593 * in variable names. This routine interprets the character before the = 1594 * as a modifier. Therefore, an assignment like 1595 * C++=/usr/bin/CC 1596 * is interpreted as "C+ +=" instead of "C++ =". 1597 * 1598 * Input: 1599 * line a line guaranteed to be a variable assignment. 1600 * This reduces error checks 1601 * ctxt Context in which to do the assignment 1602 * 1603 * Results: 1604 * none 1605 * 1606 * Side Effects: 1607 * the variable structure of the given variable name is altered in the 1608 * global context. 1609 *--------------------------------------------------------------------- 1610 */ 1611 void 1612 Parse_DoVar(char *line, GNode *ctxt) 1613 { 1614 char *cp; /* pointer into line */ 1615 enum { 1616 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL 1617 } type; /* Type of assignment */ 1618 char *opc; /* ptr to operator character to 1619 * null-terminate the variable name */ 1620 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed, 1621 * i.e. if any variable expansion was 1622 * performed */ 1623 /* 1624 * Avoid clobbered variable warnings by forcing the compiler 1625 * to ``unregister'' variables 1626 */ 1627 #if __GNUC__ 1628 (void) &cp; 1629 (void) &line; 1630 #endif 1631 1632 /* 1633 * Skip to variable name 1634 */ 1635 while ((*line == ' ') || (*line == '\t')) { 1636 line++; 1637 } 1638 1639 /* 1640 * Skip to operator character, nulling out whitespace as we go 1641 */ 1642 for (cp = line + 1; *cp != '='; cp++) { 1643 if (isspace ((unsigned char)*cp)) { 1644 *cp = '\0'; 1645 } 1646 } 1647 opc = cp-1; /* operator is the previous character */ 1648 *cp++ = '\0'; /* nuke the = */ 1649 1650 /* 1651 * Check operator type 1652 */ 1653 switch (*opc) { 1654 case '+': 1655 type = VAR_APPEND; 1656 *opc = '\0'; 1657 break; 1658 1659 case '?': 1660 /* 1661 * If the variable already has a value, we don't do anything. 1662 */ 1663 *opc = '\0'; 1664 if (Var_Exists(line, ctxt)) { 1665 return; 1666 } else { 1667 type = VAR_NORMAL; 1668 } 1669 break; 1670 1671 case ':': 1672 type = VAR_SUBST; 1673 *opc = '\0'; 1674 break; 1675 1676 case '!': 1677 type = VAR_SHELL; 1678 *opc = '\0'; 1679 break; 1680 1681 default: 1682 #ifdef SUNSHCMD 1683 while (opc > line && *opc != ':') 1684 opc--; 1685 1686 if (strncmp(opc, ":sh", 3) == 0) { 1687 type = VAR_SHELL; 1688 *opc = '\0'; 1689 break; 1690 } 1691 #endif 1692 type = VAR_NORMAL; 1693 break; 1694 } 1695 1696 while (isspace ((unsigned char)*cp)) { 1697 cp++; 1698 } 1699 1700 if (type == VAR_APPEND) { 1701 Var_Append(line, cp, ctxt); 1702 } else if (type == VAR_SUBST) { 1703 /* 1704 * Allow variables in the old value to be undefined, but leave their 1705 * invocation alone -- this is done by forcing oldVars to be false. 1706 * XXX: This can cause recursive variables, but that's not hard to do, 1707 * and this allows someone to do something like 1708 * 1709 * CFLAGS = $(.INCLUDES) 1710 * CFLAGS := -I.. $(CFLAGS) 1711 * 1712 * And not get an error. 1713 */ 1714 Boolean oldOldVars = oldVars; 1715 1716 oldVars = FALSE; 1717 1718 /* 1719 * make sure that we set the variable the first time to nothing 1720 * so that it gets substituted! 1721 */ 1722 if (!Var_Exists(line, ctxt)) 1723 Var_Set(line, "", ctxt, 0); 1724 1725 cp = Var_Subst(NULL, cp, ctxt, FALSE); 1726 oldVars = oldOldVars; 1727 freeCp = TRUE; 1728 1729 Var_Set(line, cp, ctxt, 0); 1730 } else if (type == VAR_SHELL) { 1731 char *res; 1732 const char *err; 1733 1734 if (strchr(cp, '$') != NULL) { 1735 /* 1736 * There's a dollar sign in the command, so perform variable 1737 * expansion on the whole thing. The resulting string will need 1738 * freeing when we're done, so set freeCmd to TRUE. 1739 */ 1740 cp = Var_Subst(NULL, cp, VAR_CMD, TRUE); 1741 freeCp = TRUE; 1742 } 1743 1744 res = Cmd_Exec(cp, &err); 1745 Var_Set(line, res, ctxt, 0); 1746 free(res); 1747 1748 if (err) 1749 Parse_Error(PARSE_WARNING, err, cp); 1750 } else { 1751 /* 1752 * Normal assignment -- just do it. 1753 */ 1754 Var_Set(line, cp, ctxt, 0); 1755 } 1756 if (strcmp(line, MAKEOVERRIDES) == 0) 1757 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */ 1758 else if (strcmp(line, ".CURDIR") == 0) { 1759 /* 1760 * Somone is being (too?) clever... 1761 * Let's pretend they know what they are doing and 1762 * re-initialize the 'cur' Path. 1763 */ 1764 Dir_InitCur(cp); 1765 Dir_SetPATH(); 1766 } 1767 if (freeCp) 1768 free(cp); 1769 } 1770 1771 1772 /*- 1773 * ParseAddCmd -- 1774 * Lst_ForEach function to add a command line to all targets 1775 * 1776 * Input: 1777 * gnp the node to which the command is to be added 1778 * cmd the command to add 1779 * 1780 * Results: 1781 * Always 0 1782 * 1783 * Side Effects: 1784 * A new element is added to the commands list of the node. 1785 */ 1786 static int 1787 ParseAddCmd(ClientData gnp, ClientData cmd) 1788 { 1789 GNode *gn = (GNode *)gnp; 1790 /* if target already supplied, ignore commands */ 1791 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) 1792 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts)); 1793 if (!(gn->type & OP_HAS_COMMANDS)) { 1794 (void)Lst_AtEnd(gn->commands, cmd); 1795 ParseMark(gn); 1796 } else { 1797 #ifdef notyet 1798 /* XXX: We cannot do this until we fix the tree */ 1799 (void)Lst_AtEnd(gn->commands, cmd); 1800 Parse_Error(PARSE_WARNING, 1801 "overriding commands for target \"%s\"; " 1802 "previous commands defined at %s: %d ignored", 1803 gn->name, gn->fname, gn->lineno); 1804 #else 1805 Parse_Error(PARSE_WARNING, 1806 "duplicate script for target \"%s\" ignored", 1807 gn->name); 1808 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING, 1809 "using previous script for \"%s\" defined here", 1810 gn->name); 1811 #endif 1812 } 1813 return(0); 1814 } 1815 1816 /*- 1817 *----------------------------------------------------------------------- 1818 * ParseHasCommands -- 1819 * Callback procedure for Parse_File when destroying the list of 1820 * targets on the last dependency line. Marks a target as already 1821 * having commands if it does, to keep from having shell commands 1822 * on multiple dependency lines. 1823 * 1824 * Input: 1825 * gnp Node to examine 1826 * 1827 * Results: 1828 * None 1829 * 1830 * Side Effects: 1831 * OP_HAS_COMMANDS may be set for the target. 1832 * 1833 *----------------------------------------------------------------------- 1834 */ 1835 static void 1836 ParseHasCommands(ClientData gnp) 1837 { 1838 GNode *gn = (GNode *)gnp; 1839 if (!Lst_IsEmpty(gn->commands)) { 1840 gn->type |= OP_HAS_COMMANDS; 1841 } 1842 } 1843 1844 /*- 1845 *----------------------------------------------------------------------- 1846 * Parse_AddIncludeDir -- 1847 * Add a directory to the path searched for included makefiles 1848 * bracketed by double-quotes. Used by functions in main.c 1849 * 1850 * Input: 1851 * dir The name of the directory to add 1852 * 1853 * Results: 1854 * None. 1855 * 1856 * Side Effects: 1857 * The directory is appended to the list. 1858 * 1859 *----------------------------------------------------------------------- 1860 */ 1861 void 1862 Parse_AddIncludeDir(char *dir) 1863 { 1864 (void)Dir_AddDir(parseIncPath, dir); 1865 } 1866 1867 /*- 1868 *--------------------------------------------------------------------- 1869 * ParseDoInclude -- 1870 * Push to another file. 1871 * 1872 * The input is the line minus the `.'. A file spec is a string 1873 * enclosed in <> or "". The former is looked for only in sysIncPath. 1874 * The latter in . and the directories specified by -I command line 1875 * options 1876 * 1877 * Results: 1878 * None 1879 * 1880 * Side Effects: 1881 * A structure is added to the includes Lst and readProc, lineno, 1882 * fname and curFILE are altered for the new file 1883 *--------------------------------------------------------------------- 1884 */ 1885 static void 1886 ParseDoInclude(char *line) 1887 { 1888 char *fullname; /* full pathname of file */ 1889 IFile *oldFile; /* state associated with current file */ 1890 char endc; /* the character which ends the file spec */ 1891 char *cp; /* current position in file spec */ 1892 Boolean isSystem; /* TRUE if makefile is a system makefile */ 1893 int silent = (*line != 'i') ? 1 : 0; 1894 char *file = &line[7 + silent]; 1895 1896 /* 1897 * Skip to delimiter character so we know where to look 1898 */ 1899 while ((*file == ' ') || (*file == '\t')) { 1900 file++; 1901 } 1902 1903 if ((*file != '"') && (*file != '<')) { 1904 Parse_Error(PARSE_FATAL, 1905 ".include filename must be delimited by '\"' or '<'"); 1906 return; 1907 } 1908 1909 /* 1910 * Set the search path on which to find the include file based on the 1911 * characters which bracket its name. Angle-brackets imply it's 1912 * a system Makefile while double-quotes imply it's a user makefile 1913 */ 1914 if (*file == '<') { 1915 isSystem = TRUE; 1916 endc = '>'; 1917 } else { 1918 isSystem = FALSE; 1919 endc = '"'; 1920 } 1921 1922 /* 1923 * Skip to matching delimiter 1924 */ 1925 for (cp = ++file; *cp && *cp != endc; cp++) { 1926 continue; 1927 } 1928 1929 if (*cp != endc) { 1930 Parse_Error(PARSE_FATAL, 1931 "Unclosed %cinclude filename. '%c' expected", 1932 '.', endc); 1933 return; 1934 } 1935 *cp = '\0'; 1936 1937 /* 1938 * Substitute for any variables in the file name before trying to 1939 * find the thing. 1940 */ 1941 file = Var_Subst(NULL, file, VAR_CMD, FALSE); 1942 1943 /* 1944 * Now we know the file's name and its search path, we attempt to 1945 * find the durn thing. A return of NULL indicates the file don't 1946 * exist. 1947 */ 1948 fullname = NULL; 1949 1950 if (!isSystem) { 1951 /* 1952 * Include files contained in double-quotes are first searched for 1953 * relative to the including file's location. We don't want to 1954 * cd there, of course, so we just tack on the old file's 1955 * leading path components and call Dir_FindFile to see if 1956 * we can locate the beast. 1957 */ 1958 char *prefEnd, *Fname; 1959 1960 /* Make a temporary copy of this, to be safe. */ 1961 Fname = estrdup(curFile.fname); 1962 1963 prefEnd = strrchr(Fname, '/'); 1964 if (prefEnd != NULL) { 1965 char *newName; 1966 1967 *prefEnd = '\0'; 1968 if (file[0] == '/') 1969 newName = estrdup(file); 1970 else 1971 newName = str_concat(Fname, file, STR_ADDSLASH); 1972 fullname = Dir_FindFile(newName, parseIncPath); 1973 if (fullname == NULL) { 1974 fullname = Dir_FindFile(newName, dirSearchPath); 1975 } 1976 free(newName); 1977 *prefEnd = '/'; 1978 } else { 1979 fullname = NULL; 1980 } 1981 free(Fname); 1982 if (fullname == NULL) { 1983 /* 1984 * Makefile wasn't found in same directory as included makefile. 1985 * Search for it first on the -I search path, 1986 * then on the .PATH search path, if not found in a -I directory. 1987 * XXX: Suffix specific? 1988 */ 1989 fullname = Dir_FindFile(file, parseIncPath); 1990 if (fullname == NULL) { 1991 fullname = Dir_FindFile(file, dirSearchPath); 1992 } 1993 } 1994 } 1995 1996 /* Looking for a system file or file still not found */ 1997 if (fullname == NULL) { 1998 /* 1999 * Look for it on the system path 2000 */ 2001 fullname = Dir_FindFile(file, Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2002 } 2003 2004 if (fullname == NULL) { 2005 *cp = endc; 2006 if (!silent) 2007 Parse_Error(PARSE_FATAL, "Could not find %s", file); 2008 return; 2009 } 2010 2011 free(file); 2012 2013 /* 2014 * Once we find the absolute path to the file, we get to save all the 2015 * state from the current file before we can start reading this 2016 * include file. The state is stored in an IFile structure which 2017 * is placed on a list with other IFile structures. The list makes 2018 * a very nice stack to track how we got here... 2019 */ 2020 oldFile = emalloc(sizeof(IFile)); 2021 2022 memcpy(oldFile, &curFile, sizeof(IFile)); 2023 2024 (void)Lst_AtFront(includes, (ClientData)oldFile); 2025 2026 /* 2027 * Once the previous state has been saved, we can get down to reading 2028 * the new file. We set up the name of the file to be the absolute 2029 * name of the include file so error messages refer to the right 2030 * place. Naturally enough, we start reading at line number 0. 2031 */ 2032 curFile.fname = fullname; 2033 curFile.lineno = 0; 2034 2035 ParseSetParseFile(curFile.fname); 2036 2037 curFile.F = fopen(fullname, "r"); 2038 curFile.P = NULL; 2039 2040 if (curFile.F == (FILE * ) NULL) { 2041 if (!silent) 2042 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname); 2043 /* 2044 * Pop to previous file 2045 */ 2046 (void)ParseEOF(0); 2047 } 2048 } 2049 2050 2051 /*- 2052 *--------------------------------------------------------------------- 2053 * ParseSetParseFile -- 2054 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and 2055 * basename of the given filename 2056 * 2057 * Results: 2058 * None 2059 * 2060 * Side Effects: 2061 * The .PARSEDIR and .PARSEFILE variables are overwritten by the 2062 * dirname and basename of the given filename. 2063 *--------------------------------------------------------------------- 2064 */ 2065 static void 2066 ParseSetParseFile(char *filename) 2067 { 2068 char *slash; 2069 2070 slash = strrchr(filename, '/'); 2071 if (slash == 0) { 2072 Var_Set(".PARSEDIR", ".", VAR_GLOBAL, 0); 2073 Var_Set(".PARSEFILE", filename, VAR_GLOBAL, 0); 2074 } else { 2075 *slash = '\0'; 2076 Var_Set(".PARSEDIR", filename, VAR_GLOBAL, 0); 2077 Var_Set(".PARSEFILE", slash+1, VAR_GLOBAL, 0); 2078 *slash = '/'; 2079 } 2080 } 2081 2082 2083 /*- 2084 *--------------------------------------------------------------------- 2085 * Parse_FromString -- 2086 * Start Parsing from the given string 2087 * 2088 * Results: 2089 * None 2090 * 2091 * Side Effects: 2092 * A structure is added to the includes Lst and readProc, lineno, 2093 * fname and curFILE are altered for the new file 2094 *--------------------------------------------------------------------- 2095 */ 2096 void 2097 Parse_FromString(char *str, int lineno) 2098 { 2099 IFile *oldFile; /* state associated with this file */ 2100 2101 if (DEBUG(FOR)) 2102 (void)fprintf(stderr, "%s\n---- at line %d\n", str, lineno); 2103 2104 oldFile = emalloc(sizeof(IFile)); 2105 memcpy(oldFile, &curFile, sizeof(IFile)); 2106 2107 (void)Lst_AtFront(includes, (ClientData)oldFile); 2108 2109 curFile.F = NULL; 2110 curFile.P = emalloc(sizeof(PTR)); 2111 curFile.P->str = curFile.P->ptr = str; 2112 curFile.lineno = lineno; 2113 curFile.fname = estrdup(curFile.fname); 2114 } 2115 2116 2117 #ifdef SYSVINCLUDE 2118 /*- 2119 *--------------------------------------------------------------------- 2120 * ParseTraditionalInclude -- 2121 * Push to another file. 2122 * 2123 * The input is the current line. The file name(s) are 2124 * following the "include". 2125 * 2126 * Results: 2127 * None 2128 * 2129 * Side Effects: 2130 * A structure is added to the includes Lst and readProc, lineno, 2131 * fname and curFILE are altered for the new file 2132 *--------------------------------------------------------------------- 2133 */ 2134 static void 2135 ParseTraditionalInclude(char *line) 2136 { 2137 char *fullname; /* full pathname of file */ 2138 IFile *oldFile; /* state associated with current file */ 2139 char *cp; /* current position in file spec */ 2140 char *prefEnd; 2141 int done = 0; 2142 int silent = (line[0] != 'i') ? 1 : 0; 2143 char *file = &line[silent + 7]; 2144 char *cfname; 2145 size_t clineno; 2146 2147 cfname = curFile.fname; 2148 clineno = curFile.lineno; 2149 2150 /* 2151 * Skip over whitespace 2152 */ 2153 while (isspace((unsigned char)*file)) 2154 file++; 2155 2156 if (*file == '\0') { 2157 Parse_Error(PARSE_FATAL, 2158 "Filename missing from \"include\""); 2159 return; 2160 } 2161 2162 for (; !done; file = cp + 1) { 2163 /* 2164 * Skip to end of line or next whitespace 2165 */ 2166 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++) 2167 continue; 2168 2169 if (*cp) 2170 *cp = '\0'; 2171 else 2172 done = 1; 2173 2174 /* 2175 * Substitute for any variables in the file name before trying to 2176 * find the thing. 2177 */ 2178 file = Var_Subst(NULL, file, VAR_CMD, FALSE); 2179 2180 /* 2181 * Now we know the file's name, we attempt to find the durn thing. 2182 * A return of NULL indicates the file don't exist. 2183 * 2184 * Include files are first searched for relative to the including 2185 * file's location. We don't want to cd there, of course, so we 2186 * just tack on the old file's leading path components and call 2187 * Dir_FindFile to see if we can locate the beast. 2188 * XXX - this *does* search in the current directory, right? 2189 */ 2190 2191 prefEnd = strrchr(cfname, '/'); 2192 if (prefEnd != NULL) { 2193 char *newName; 2194 2195 *prefEnd = '\0'; 2196 newName = str_concat(cfname, file, STR_ADDSLASH); 2197 fullname = Dir_FindFile(newName, parseIncPath); 2198 if (fullname == NULL) { 2199 fullname = Dir_FindFile(newName, dirSearchPath); 2200 } 2201 free(newName); 2202 *prefEnd = '/'; 2203 } else { 2204 fullname = NULL; 2205 } 2206 2207 if (fullname == NULL) { 2208 /* 2209 * System makefile or makefile wasn't found in same directory as 2210 * included makefile. Search for it first on the -I search path, 2211 * then on the .PATH search path, if not found in a 2212 * -I directory. XXX: Suffix specific? 2213 */ 2214 fullname = Dir_FindFile(file, parseIncPath); 2215 if (fullname == NULL) { 2216 fullname = Dir_FindFile(file, dirSearchPath); 2217 } 2218 } 2219 2220 if (fullname == NULL) { 2221 /* 2222 * Still haven't found the makefile. Look for it on the system 2223 * path as a last resort. 2224 */ 2225 fullname = Dir_FindFile(file, 2226 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2227 } 2228 2229 if (fullname == NULL) { 2230 if (!silent) 2231 ParseErrorInternal(cfname, clineno, PARSE_FATAL, 2232 "Could not find %s", file); 2233 free(file); 2234 continue; 2235 } 2236 2237 free(file); 2238 2239 /* 2240 * Once we find the absolute path to the file, we get to save all 2241 * the state from the current file before we can start reading this 2242 * include file. The state is stored in an IFile structure which 2243 * is placed on a list with other IFile structures. The list makes 2244 * a very nice stack to track how we got here... 2245 */ 2246 oldFile = emalloc(sizeof(IFile)); 2247 memcpy(oldFile, &curFile, sizeof(IFile)); 2248 2249 (void)Lst_AtFront(includes, (ClientData)oldFile); 2250 2251 /* 2252 * Once the previous state has been saved, we can get down to 2253 * reading the new file. We set up the name of the file to be the 2254 * absolute name of the include file so error messages refer to the 2255 * right place. Naturally enough, we start reading at line number 0. 2256 */ 2257 curFile.fname = fullname; 2258 curFile.lineno = 0; 2259 2260 curFile.F = fopen(fullname, "r"); 2261 curFile.P = NULL; 2262 2263 if (curFile.F == NULL) { 2264 if (!silent) 2265 ParseErrorInternal(cfname, clineno, PARSE_FATAL, 2266 "Cannot open %s", fullname); 2267 /* 2268 * Pop to previous file 2269 */ 2270 (void)ParseEOF(1); 2271 } 2272 } 2273 } 2274 #endif 2275 2276 /*- 2277 *--------------------------------------------------------------------- 2278 * ParseEOF -- 2279 * Called when EOF is reached in the current file. If we were reading 2280 * an include file, the includes stack is popped and things set up 2281 * to go back to reading the previous file at the previous location. 2282 * 2283 * Results: 2284 * CONTINUE if there's more to do. DONE if not. 2285 * 2286 * Side Effects: 2287 * The old curFILE, is closed. The includes list is shortened. 2288 * lineno, curFILE, and fname are changed if CONTINUE is returned. 2289 *--------------------------------------------------------------------- 2290 */ 2291 static int 2292 ParseEOF(int opened) 2293 { 2294 IFile *ifile; /* the state on the top of the includes stack */ 2295 2296 if (Lst_IsEmpty(includes)) { 2297 Var_Delete(".PARSEDIR", VAR_GLOBAL); 2298 Var_Delete(".PARSEFILE", VAR_GLOBAL); 2299 return (DONE); 2300 } 2301 2302 ifile = (IFile *)Lst_DeQueue(includes); 2303 2304 /* XXX dispose of curFile info */ 2305 free( curFile.fname); 2306 if (opened && curFile.F) 2307 (void)fclose(curFile.F); 2308 if (curFile.P) { 2309 free(curFile.P->str); 2310 free(curFile.P); 2311 } 2312 2313 memcpy(&curFile, ifile, sizeof(IFile)); 2314 2315 free(ifile); 2316 2317 /* pop the PARSEDIR/PARSEFILE variables */ 2318 ParseSetParseFile(curFile.fname); 2319 return (CONTINUE); 2320 } 2321 2322 /*- 2323 *--------------------------------------------------------------------- 2324 * ParseReadc -- 2325 * Read a character from the current file 2326 * 2327 * Results: 2328 * The character that was read 2329 * 2330 * Side Effects: 2331 *--------------------------------------------------------------------- 2332 */ 2333 static inline int 2334 ParseReadc(void) 2335 { 2336 if (curFile.F) 2337 return fgetc(curFile.F); 2338 2339 if (curFile.P && *curFile.P->ptr) 2340 return *curFile.P->ptr++; 2341 return EOF; 2342 } 2343 2344 2345 /*- 2346 *--------------------------------------------------------------------- 2347 * ParseUnreadc -- 2348 * Put back a character to the current file 2349 * 2350 * Results: 2351 * None. 2352 * 2353 * Side Effects: 2354 *--------------------------------------------------------------------- 2355 */ 2356 static void 2357 ParseUnreadc(int c) 2358 { 2359 if (curFile.F) { 2360 ungetc(c, curFile.F); 2361 return; 2362 } 2363 if (curFile.P) { 2364 *--(curFile.P->ptr) = c; 2365 return; 2366 } 2367 } 2368 2369 2370 /* ParseSkipLine(): 2371 * Grab the next line 2372 * 2373 * Input: 2374 * skip Skip lines that don't start with . 2375 * keep_newline Keep newline character as is. 2376 * 2377 */ 2378 static char * 2379 ParseSkipLine(int skip, int keep_newline) 2380 { 2381 char *line; 2382 int c, lastc, lineLength = 0; 2383 Buffer buf; 2384 2385 buf = Buf_Init(MAKE_BSIZE); 2386 2387 do { 2388 Buf_Discard(buf, lineLength); 2389 lastc = '\0'; 2390 2391 while (((c = ParseReadc()) != '\n' || lastc == '\\') 2392 && c != EOF) { 2393 if (c == '\n') { 2394 if (keep_newline) 2395 Buf_AddByte(buf, (Byte)c); 2396 else 2397 Buf_ReplaceLastByte(buf, (Byte)' '); 2398 curFile.lineno++; 2399 2400 while ((c = ParseReadc()) == ' ' || c == '\t'); 2401 2402 if (c == EOF) 2403 break; 2404 } 2405 2406 Buf_AddByte(buf, (Byte)c); 2407 lastc = c; 2408 } 2409 2410 if (c == EOF) { 2411 Parse_Error(PARSE_FATAL, "Unclosed conditional/for loop"); 2412 Buf_Destroy(buf, TRUE); 2413 return(NULL); 2414 } 2415 2416 curFile.lineno++; 2417 Buf_AddByte(buf, (Byte)'\0'); 2418 line = (char *)Buf_GetAll(buf, &lineLength); 2419 } while (skip == 1 && line[0] != '.'); 2420 2421 Buf_Destroy(buf, FALSE); 2422 return line; 2423 } 2424 2425 2426 /*- 2427 *--------------------------------------------------------------------- 2428 * ParseReadLine -- 2429 * Read an entire line from the input file. Called only by Parse_File. 2430 * To facilitate escaped newlines and what have you, a character is 2431 * buffered in 'lastc', which is '\0' when no characters have been 2432 * read. When we break out of the loop, c holds the terminating 2433 * character and lastc holds a character that should be added to 2434 * the line (unless we don't read anything but a terminator). 2435 * 2436 * Results: 2437 * A line w/o its newline 2438 * 2439 * Side Effects: 2440 * Only those associated with reading a character 2441 *--------------------------------------------------------------------- 2442 */ 2443 static char * 2444 ParseReadLine(void) 2445 { 2446 Buffer buf; /* Buffer for current line */ 2447 int c; /* the current character */ 2448 int lastc; /* The most-recent character */ 2449 Boolean semiNL; /* treat semi-colons as newlines */ 2450 Boolean ignDepOp; /* TRUE if should ignore dependency operators 2451 * for the purposes of setting semiNL */ 2452 Boolean ignComment; /* TRUE if should ignore comments (in a 2453 * shell command */ 2454 char *line; /* Result */ 2455 char *ep; /* to strip trailing blanks */ 2456 int lineLength; /* Length of result */ 2457 int lineno; /* Saved line # */ 2458 2459 semiNL = FALSE; 2460 ignDepOp = FALSE; 2461 ignComment = FALSE; 2462 2463 /* 2464 * Handle special-characters at the beginning of the line. Either a 2465 * leading tab (shell command) or pound-sign (possible conditional) 2466 * forces us to ignore comments and dependency operators and treat 2467 * semi-colons as semi-colons (by leaving semiNL FALSE). This also 2468 * discards completely blank lines. 2469 */ 2470 for (;;) { 2471 c = ParseReadc(); 2472 2473 if (c == '\t') { 2474 ignComment = ignDepOp = TRUE; 2475 break; 2476 } else if (c == '\n') { 2477 curFile.lineno++; 2478 } else if (c == '#') { 2479 ParseUnreadc(c); 2480 break; 2481 } else { 2482 /* 2483 * Anything else breaks out without doing anything 2484 */ 2485 break; 2486 } 2487 } 2488 2489 if (c != EOF) { 2490 lastc = c; 2491 buf = Buf_Init(MAKE_BSIZE); 2492 2493 while (((c = ParseReadc()) != '\n' || (lastc == '\\')) && 2494 (c != EOF)) 2495 { 2496 test_char: 2497 switch(c) { 2498 case '\n': 2499 /* 2500 * Escaped newline: read characters until a non-space or an 2501 * unescaped newline and replace them all by a single space. 2502 * This is done by storing the space over the backslash and 2503 * dropping through with the next nonspace. If it is a 2504 * semi-colon and semiNL is TRUE, it will be recognized as a 2505 * newline in the code below this... 2506 */ 2507 curFile.lineno++; 2508 lastc = ' '; 2509 while ((c = ParseReadc()) == ' ' || c == '\t') { 2510 continue; 2511 } 2512 if (c == EOF || c == '\n') { 2513 goto line_read; 2514 } else { 2515 /* 2516 * Check for comments, semiNL's, etc. -- easier than 2517 * ParseUnreadc(c); continue; 2518 */ 2519 goto test_char; 2520 } 2521 /*NOTREACHED*/ 2522 break; 2523 2524 case ';': 2525 /* 2526 * Semi-colon: Need to see if it should be interpreted as a 2527 * newline 2528 */ 2529 if (semiNL) { 2530 /* 2531 * To make sure the command that may be following this 2532 * semi-colon begins with a tab, we push one back into the 2533 * input stream. This will overwrite the semi-colon in the 2534 * buffer. If there is no command following, this does no 2535 * harm, since the newline remains in the buffer and the 2536 * whole line is ignored. 2537 */ 2538 ParseUnreadc('\t'); 2539 goto line_read; 2540 } 2541 break; 2542 case '=': 2543 if (!semiNL) { 2544 /* 2545 * Haven't seen a dependency operator before this, so this 2546 * must be a variable assignment -- don't pay attention to 2547 * dependency operators after this. 2548 */ 2549 ignDepOp = TRUE; 2550 } else if (lastc == ':' || lastc == '!') { 2551 /* 2552 * Well, we've seen a dependency operator already, but it 2553 * was the previous character, so this is really just an 2554 * expanded variable assignment. Revert semi-colons to 2555 * being just semi-colons again and ignore any more 2556 * dependency operators. 2557 * 2558 * XXX: Note that a line like "foo : a:=b" will blow up, 2559 * but who'd write a line like that anyway? 2560 */ 2561 ignDepOp = TRUE; semiNL = FALSE; 2562 } 2563 break; 2564 case '#': 2565 if (!ignComment) { 2566 if ( 2567 #if 0 2568 compatMake && 2569 #endif 2570 (lastc != '\\')) { 2571 /* 2572 * If the character is a hash mark and it isn't escaped 2573 * (or we're being compatible), the thing is a comment. 2574 * Skip to the end of the line. 2575 */ 2576 do { 2577 c = ParseReadc(); 2578 /* 2579 * If we found a backslash not escaped 2580 * itself it means that the comment is 2581 * going to continue in the next line. 2582 */ 2583 if (c == '\\') 2584 ParseReadc(); 2585 } while ((c != '\n') && (c != EOF)); 2586 goto line_read; 2587 } else { 2588 /* 2589 * Don't add the backslash. Just let the # get copied 2590 * over. 2591 */ 2592 lastc = c; 2593 continue; 2594 } 2595 } 2596 break; 2597 case ':': 2598 case '!': 2599 if (!ignDepOp && (c == ':' || c == '!')) { 2600 /* 2601 * A semi-colon is recognized as a newline only on 2602 * dependency lines. Dependency lines are lines with a 2603 * colon or an exclamation point. Ergo... 2604 */ 2605 semiNL = TRUE; 2606 } 2607 break; 2608 } 2609 /* 2610 * Copy in the previous character and save this one in lastc. 2611 */ 2612 Buf_AddByte(buf, (Byte)lastc); 2613 lastc = c; 2614 2615 } 2616 line_read: 2617 curFile.lineno++; 2618 2619 if (lastc != '\0') { 2620 Buf_AddByte(buf, (Byte)lastc); 2621 } 2622 Buf_AddByte(buf, (Byte)'\0'); 2623 line = (char *)Buf_GetAll(buf, &lineLength); 2624 Buf_Destroy(buf, FALSE); 2625 2626 /* 2627 * Strip trailing blanks and tabs from the line. 2628 * Do not strip a blank or tab that is preceded by 2629 * a '\' 2630 */ 2631 ep = line; 2632 while (*ep) 2633 ++ep; 2634 while (ep > line + 1 && (ep[-1] == ' ' || ep[-1] == '\t')) { 2635 if (ep > line + 1 && ep[-2] == '\\') 2636 break; 2637 --ep; 2638 } 2639 *ep = 0; 2640 2641 if (line[0] == '.') { 2642 /* 2643 * The line might be a conditional. Ask the conditional module 2644 * about it and act accordingly 2645 */ 2646 switch (Cond_Eval(line)) { 2647 case COND_SKIP: 2648 /* 2649 * Skip to next conditional that evaluates to COND_PARSE. 2650 */ 2651 do { 2652 free(line); 2653 line = ParseSkipLine(1, 0); 2654 } while (line && Cond_Eval(line) != COND_PARSE); 2655 if (line == NULL) 2656 break; 2657 /*FALLTHRU*/ 2658 case COND_PARSE: 2659 free(line); 2660 line = ParseReadLine(); 2661 break; 2662 case COND_INVALID: 2663 lineno = curFile.lineno; 2664 if (For_Eval(line)) { 2665 int ok; 2666 free(line); 2667 do { 2668 /* 2669 * Skip after the matching end 2670 */ 2671 line = ParseSkipLine(0, 1); 2672 if (line == NULL) { 2673 Parse_Error(PARSE_FATAL, 2674 "Unexpected end of file in for loop.\n"); 2675 break; 2676 } 2677 ok = For_Eval(line); 2678 free(line); 2679 } 2680 while (ok); 2681 if (line != NULL) 2682 For_Run(lineno); 2683 line = ParseReadLine(); 2684 } 2685 break; 2686 } 2687 } 2688 return (line); 2689 2690 } else { 2691 /* 2692 * Hit end-of-file, so return a NULL line to indicate this. 2693 */ 2694 return(NULL); 2695 } 2696 } 2697 2698 /*- 2699 *----------------------------------------------------------------------- 2700 * ParseFinishLine -- 2701 * Handle the end of a dependency group. 2702 * 2703 * Results: 2704 * Nothing. 2705 * 2706 * Side Effects: 2707 * inLine set FALSE. 'targets' list destroyed. 2708 * 2709 *----------------------------------------------------------------------- 2710 */ 2711 static void 2712 ParseFinishLine(void) 2713 { 2714 if (inLine) { 2715 Lst_ForEach(targets, Suff_EndTransform, (ClientData)NULL); 2716 Lst_Destroy(targets, ParseHasCommands); 2717 targets = NULL; 2718 inLine = FALSE; 2719 } 2720 } 2721 2722 2723 /*- 2724 *--------------------------------------------------------------------- 2725 * Parse_File -- 2726 * Parse a file into its component parts, incorporating it into the 2727 * current dependency graph. This is the main function and controls 2728 * almost every other function in this module 2729 * 2730 * Input: 2731 * name the name of the file being read 2732 * stream Stream open to makefile to parse 2733 * 2734 * Results: 2735 * None 2736 * 2737 * Side Effects: 2738 * Loads. Nodes are added to the list of all targets, nodes and links 2739 * are added to the dependency graph. etc. etc. etc. 2740 *--------------------------------------------------------------------- 2741 */ 2742 void 2743 Parse_File(const char *name, FILE *stream) 2744 { 2745 char *cp, /* pointer into the line */ 2746 *line; /* the line we're working on */ 2747 2748 inLine = FALSE; 2749 fatals = 0; 2750 2751 curFile.fname = UNCONST(name); 2752 curFile.F = stream; 2753 curFile.lineno = 0; 2754 2755 ParseSetParseFile(curFile.fname); 2756 2757 do { 2758 while ((line = ParseReadLine()) != NULL) { 2759 if (*line == '.') { 2760 /* 2761 * Lines that begin with the special character are either 2762 * include or undef directives. 2763 */ 2764 for (cp = line + 1; isspace ((unsigned char)*cp); cp++) { 2765 continue; 2766 } 2767 if (strncmp(cp, "include", 7) == 0 || 2768 ((cp[0] == 's' || cp[0] == '-') && 2769 strncmp(&cp[1], "include", 7) == 0)) { 2770 ParseDoInclude(cp); 2771 goto nextLine; 2772 } else if (strncmp(cp, "undef", 5) == 0) { 2773 char *cp2; 2774 for (cp += 5; isspace((unsigned char) *cp); cp++) { 2775 continue; 2776 } 2777 2778 for (cp2 = cp; !isspace((unsigned char) *cp2) && 2779 (*cp2 != '\0'); cp2++) { 2780 continue; 2781 } 2782 2783 *cp2 = '\0'; 2784 2785 Var_Delete(cp, VAR_GLOBAL); 2786 goto nextLine; 2787 } 2788 } 2789 if (*line == '#') { 2790 /* If we're this far, the line must be a comment. */ 2791 goto nextLine; 2792 } 2793 2794 if (*line == '\t') { 2795 /* 2796 * If a line starts with a tab, it can only hope to be 2797 * a creation command. 2798 */ 2799 #ifndef POSIX 2800 shellCommand: 2801 #endif 2802 for (cp = line + 1; isspace ((unsigned char)*cp); cp++) { 2803 continue; 2804 } 2805 if (*cp) { 2806 if (inLine) { 2807 /* 2808 * So long as it's not a blank line and we're actually 2809 * in a dependency spec, add the command to the list of 2810 * commands of all targets in the dependency spec 2811 */ 2812 Lst_ForEach(targets, ParseAddCmd, cp); 2813 #ifdef CLEANUP 2814 Lst_AtEnd(targCmds, (ClientData) line); 2815 #endif 2816 continue; 2817 } else { 2818 Parse_Error(PARSE_FATAL, 2819 "Unassociated shell command \"%s\"", 2820 cp); 2821 } 2822 } 2823 #ifdef SYSVINCLUDE 2824 } else if (((strncmp(line, "include", 7) == 0 && 2825 isspace((unsigned char) line[7])) || 2826 ((line[0] == 's' || line[0] == '-') && 2827 strncmp(&line[1], "include", 7) == 0 && 2828 isspace((unsigned char) line[8]))) && 2829 strchr(line, ':') == NULL) { 2830 /* 2831 * It's an S3/S5-style "include". 2832 */ 2833 ParseTraditionalInclude(line); 2834 goto nextLine; 2835 #endif 2836 } else if (Parse_IsVar(line)) { 2837 ParseFinishLine(); 2838 Parse_DoVar(line, VAR_GLOBAL); 2839 } else { 2840 /* 2841 * We now know it's a dependency line so it needs to have all 2842 * variables expanded before being parsed. Tell the variable 2843 * module to complain if some variable is undefined... 2844 * To make life easier on novices, if the line is indented we 2845 * first make sure the line has a dependency operator in it. 2846 * If it doesn't have an operator and we're in a dependency 2847 * line's script, we assume it's actually a shell command 2848 * and add it to the current list of targets. 2849 */ 2850 #ifndef POSIX 2851 Boolean nonSpace = FALSE; 2852 #endif 2853 2854 cp = line; 2855 if (isspace((unsigned char) line[0])) { 2856 while ((*cp != '\0') && isspace((unsigned char) *cp)) { 2857 cp++; 2858 } 2859 if (*cp == '\0') { 2860 goto nextLine; 2861 } 2862 #ifndef POSIX 2863 while (*cp && (ParseIsEscaped(line, cp) || 2864 (*cp != ':') && (*cp != '!'))) { 2865 nonSpace = TRUE; 2866 cp++; 2867 } 2868 #endif 2869 } 2870 2871 #ifndef POSIX 2872 if (*cp == '\0') { 2873 if (inLine) { 2874 Parse_Error(PARSE_WARNING, 2875 "Shell command needs a leading tab"); 2876 goto shellCommand; 2877 } else if (nonSpace) { 2878 Parse_Error(PARSE_FATAL, "Missing operator"); 2879 } 2880 } else { 2881 #endif 2882 ParseFinishLine(); 2883 2884 cp = Var_Subst(NULL, line, VAR_CMD, TRUE); 2885 free(line); 2886 line = cp; 2887 2888 /* 2889 * Need a non-circular list for the target nodes 2890 */ 2891 if (targets) 2892 Lst_Destroy(targets, NOFREE); 2893 2894 targets = Lst_Init(FALSE); 2895 inLine = TRUE; 2896 2897 ParseDoDependency(line); 2898 #ifndef POSIX 2899 } 2900 #endif 2901 } 2902 2903 nextLine: 2904 2905 free(line); 2906 } 2907 /* 2908 * Reached EOF, but it may be just EOF of an include file... 2909 */ 2910 } while (ParseEOF(1) == CONTINUE); 2911 2912 /* 2913 * Make sure conditionals are clean 2914 */ 2915 Cond_End(); 2916 2917 if (fatals) { 2918 (void)fprintf(stderr, 2919 "%s: Fatal errors encountered -- cannot continue\n", 2920 progname); 2921 PrintOnError(NULL); 2922 exit(1); 2923 } 2924 } 2925 2926 /*- 2927 *--------------------------------------------------------------------- 2928 * Parse_Init -- 2929 * initialize the parsing module 2930 * 2931 * Results: 2932 * none 2933 * 2934 * Side Effects: 2935 * the parseIncPath list is initialized... 2936 *--------------------------------------------------------------------- 2937 */ 2938 void 2939 Parse_Init(void) 2940 { 2941 mainNode = NILGNODE; 2942 parseIncPath = Lst_Init(FALSE); 2943 sysIncPath = Lst_Init(FALSE); 2944 defIncPath = Lst_Init(FALSE); 2945 includes = Lst_Init(FALSE); 2946 #ifdef CLEANUP 2947 targCmds = Lst_Init(FALSE); 2948 #endif 2949 } 2950 2951 void 2952 Parse_End(void) 2953 { 2954 #ifdef CLEANUP 2955 Lst_Destroy(targCmds, (FreeProc *)free); 2956 if (targets) 2957 Lst_Destroy(targets, NOFREE); 2958 Lst_Destroy(defIncPath, Dir_Destroy); 2959 Lst_Destroy(sysIncPath, Dir_Destroy); 2960 Lst_Destroy(parseIncPath, Dir_Destroy); 2961 Lst_Destroy(includes, NOFREE); /* Should be empty now */ 2962 #endif 2963 } 2964 2965 2966 /*- 2967 *----------------------------------------------------------------------- 2968 * Parse_MainName -- 2969 * Return a Lst of the main target to create for main()'s sake. If 2970 * no such target exists, we Punt with an obnoxious error message. 2971 * 2972 * Results: 2973 * A Lst of the single node to create. 2974 * 2975 * Side Effects: 2976 * None. 2977 * 2978 *----------------------------------------------------------------------- 2979 */ 2980 Lst 2981 Parse_MainName(void) 2982 { 2983 Lst mainList; /* result list */ 2984 2985 mainList = Lst_Init(FALSE); 2986 2987 if (mainNode == NILGNODE) { 2988 Punt("no target to make."); 2989 /*NOTREACHED*/ 2990 } else if (mainNode->type & OP_DOUBLEDEP) { 2991 (void)Lst_AtEnd(mainList, (ClientData)mainNode); 2992 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW); 2993 } 2994 else 2995 (void)Lst_AtEnd(mainList, (ClientData)mainNode); 2996 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL); 2997 return (mainList); 2998 } 2999 3000 /*- 3001 *----------------------------------------------------------------------- 3002 * ParseMark -- 3003 * Add the filename and lineno to the GNode so that we remember 3004 * where it was first defined. 3005 * 3006 * Side Effects: 3007 * None. 3008 * 3009 *----------------------------------------------------------------------- 3010 */ 3011 static void 3012 ParseMark(GNode *gn) 3013 { 3014 gn->fname = strdup(curFile.fname); 3015 gn->lineno = curFile.lineno; 3016 } 3017
Indexes created Mon Sep 22 05:09:51 GMT 2025