parse.c revision 1.112
1 /* $NetBSD: parse.c,v 1.112 2006/03/31 20:30:46 christos 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 1.112 2006/03/31 20:30:46 christos 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 1.112 2006/03/31 20:30:46 christos 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 * 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 printf("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, (ClientData)s); 639 (void)Lst_AtEnd(s->preds, (ClientData)p); 640 (void)Lst_AtEnd(s->recpreds, (ClientData)p); 641 if (DEBUG(PARSE)) { 642 printf("# 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->allsrc, FALSE); /* don't come back */ 685 return 0; 686 } 687 Var_Set(TARGET, tn->name, tn, 0); 688 if ((pref = strrchr(tn->name, '/'))) 689 pref++; 690 else 691 pref = tn->name; 692 if ((cp2 = strchr(pref, '.')) > pref) { 693 cp = estrdup(pref); 694 cp[cp2 - pref] = '\0'; 695 Var_Set(PREFIX, cp, tn, 0); 696 free(cp); 697 } else 698 Var_Set(PREFIX, pref, tn, 0); 699 cp = Var_Subst(NULL, ss->src, tn, FALSE); 700 if (strchr(cp, '$')) { 701 Parse_Error(PARSE_WARNING, "Cannot resolve '%s' here", ss->src); 702 ParseDoSrc(ss->op, ss->src, ss->allsrc, FALSE); /* don't come back */ 703 return 1; /* stop list traversal */ 704 } 705 /* 706 * We don't want to make every target dependent on sources for 707 * other targets. This is the bit of ParseDoSrc which is relevant. 708 * The main difference is we don't link the resolved src to all targets. 709 */ 710 gn = Targ_FindNode(cp, TARG_CREATE); 711 if (ss->op) { 712 gn->type |= ss->op; 713 } else { 714 ParseLinkSrc((ClientData)tn, (ClientData)gn); 715 } 716 if (DEBUG(PARSE)) 717 printf("ParseDoSpecialSrc: set %p(%s):%d (was %d)\n", 718 gn, gn->name, waiting, gn->order); 719 gn->order = waiting; 720 (void)Lst_AtEnd(ss->allsrc, (ClientData)gn); 721 if (waiting) { 722 Lst_ForEach(ss->allsrc, ParseAddDep, (ClientData)gn); 723 } 724 return 0; 725 } 726 727 728 /*- 729 *--------------------------------------------------------------------- 730 * ParseDoSrc -- 731 * Given the name of a source, figure out if it is an attribute 732 * and apply it to the targets if it is. Else decide if there is 733 * some attribute which should be applied *to* the source because 734 * of some special target and apply it if so. Otherwise, make the 735 * source be a child of the targets in the list 'targets' 736 * 737 * Input: 738 * tOp operator (if any) from special targets 739 * src name of the source to handle 740 * allsrc List of all sources to wait for 741 * resolve boolean - should we try and resolve .TARGET refs. 742 * 743 * Results: 744 * None 745 * 746 * Side Effects: 747 * Operator bits may be added to the list of targets or to the source. 748 * The targets may have a new source added to their lists of children. 749 *--------------------------------------------------------------------- 750 */ 751 static void 752 ParseDoSrc(int tOp, char *src, Lst allsrc, Boolean resolve) 753 { 754 GNode *gn = NULL; 755 756 if (*src == '.' && isupper ((unsigned char)src[1])) { 757 int keywd = ParseFindKeyword(src); 758 if (keywd != -1) { 759 int op = parseKeywords[keywd].op; 760 if (op != 0) { 761 Lst_ForEach(targets, ParseDoOp, (ClientData)&op); 762 return; 763 } 764 if (parseKeywords[keywd].spec == Wait) { 765 waiting++; 766 return; 767 } 768 } 769 } 770 771 switch (specType) { 772 case Main: 773 /* 774 * If we have noted the existence of a .MAIN, it means we need 775 * to add the sources of said target to the list of things 776 * to create. The string 'src' is likely to be free, so we 777 * must make a new copy of it. Note that this will only be 778 * invoked if the user didn't specify a target on the command 779 * line. This is to allow #ifmake's to succeed, or something... 780 */ 781 (void)Lst_AtEnd(create, (ClientData)estrdup(src)); 782 /* 783 * Add the name to the .TARGETS variable as well, so the user cna 784 * employ that, if desired. 785 */ 786 Var_Append(".TARGETS", src, VAR_GLOBAL); 787 return; 788 789 case Order: 790 /* 791 * Create proper predecessor/successor links between the previous 792 * source and the current one. 793 */ 794 gn = Targ_FindNode(src, TARG_CREATE); 795 if (predecessor != NILGNODE) { 796 (void)Lst_AtEnd(predecessor->successors, (ClientData)gn); 797 (void)Lst_AtEnd(gn->preds, (ClientData)predecessor); 798 if (DEBUG(PARSE)) { 799 printf("# ParseDoSrc: added Order dependency %s - %s\n", 800 predecessor->name, gn->name); 801 Targ_PrintNode(predecessor, 0); 802 Targ_PrintNode(gn, 0); 803 } 804 } 805 /* 806 * The current source now becomes the predecessor for the next one. 807 */ 808 predecessor = gn; 809 break; 810 811 default: 812 /* 813 * If the source is not an attribute, we need to find/create 814 * a node for it. After that we can apply any operator to it 815 * from a special target or link it to its parents, as 816 * appropriate. 817 * 818 * In the case of a source that was the object of a :: operator, 819 * the attribute is applied to all of its instances (as kept in 820 * the 'cohorts' list of the node) or all the cohorts are linked 821 * to all the targets. 822 */ 823 if (resolve && strchr(src, '$')) { 824 SpecialSrc ss; 825 826 ss.op = tOp; 827 ss.src = src; 828 ss.allsrc = allsrc; 829 830 /* 831 * If src cannot be fully resolved, we'll be called again 832 * with resolve==FALSE. 833 */ 834 Lst_ForEach(targets, ParseDoSpecialSrc, (ClientData)&ss); 835 return; 836 } 837 gn = Targ_FindNode(src, TARG_CREATE); 838 if (tOp) { 839 gn->type |= tOp; 840 } else { 841 Lst_ForEach(targets, ParseLinkSrc, (ClientData)gn); 842 } 843 break; 844 } 845 846 if (DEBUG(PARSE)) 847 printf("ParseDoSrc: set %p(%s):%d (was %d)\n", 848 gn, gn->name, waiting, gn->order); 849 gn->order = waiting; 850 (void)Lst_AtEnd(allsrc, (ClientData)gn); 851 if (waiting) { 852 Lst_ForEach(allsrc, ParseAddDep, (ClientData)gn); 853 } 854 } 855 856 /*- 857 *----------------------------------------------------------------------- 858 * ParseFindMain -- 859 * Find a real target in the list and set it to be the main one. 860 * Called by ParseDoDependency when a main target hasn't been found 861 * yet. 862 * 863 * Input: 864 * gnp Node to examine 865 * 866 * Results: 867 * 0 if main not found yet, 1 if it is. 868 * 869 * Side Effects: 870 * mainNode is changed and Targ_SetMain is called. 871 * 872 *----------------------------------------------------------------------- 873 */ 874 static int 875 ParseFindMain(ClientData gnp, ClientData dummy) 876 { 877 GNode *gn = (GNode *)gnp; 878 if ((gn->type & OP_NOTARGET) == 0) { 879 mainNode = gn; 880 Targ_SetMain(gn); 881 return (dummy ? 1 : 1); 882 } else { 883 return (dummy ? 0 : 0); 884 } 885 } 886 887 /*- 888 *----------------------------------------------------------------------- 889 * ParseAddDir -- 890 * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going 891 * 892 * Results: 893 * === 0 894 * 895 * Side Effects: 896 * See Dir_AddDir. 897 * 898 *----------------------------------------------------------------------- 899 */ 900 static int 901 ParseAddDir(ClientData path, ClientData name) 902 { 903 (void)Dir_AddDir((Lst) path, (char *)name); 904 return(0); 905 } 906 907 /*- 908 *----------------------------------------------------------------------- 909 * ParseClearPath -- 910 * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going 911 * 912 * Results: 913 * === 0 914 * 915 * Side Effects: 916 * See Dir_ClearPath 917 * 918 *----------------------------------------------------------------------- 919 */ 920 static int 921 ParseClearPath(ClientData path, ClientData dummy) 922 { 923 Dir_ClearPath((Lst) path); 924 return(dummy ? 0 : 0); 925 } 926 927 /*- 928 *--------------------------------------------------------------------- 929 * ParseDoDependency -- 930 * Parse the dependency line in line. 931 * 932 * Input: 933 * line the line to parse 934 * 935 * Results: 936 * None 937 * 938 * Side Effects: 939 * The nodes of the sources are linked as children to the nodes of the 940 * targets. Some nodes may be created. 941 * 942 * We parse a dependency line by first extracting words from the line and 943 * finding nodes in the list of all targets with that name. This is done 944 * until a character is encountered which is an operator character. Currently 945 * these are only ! and :. At this point the operator is parsed and the 946 * pointer into the line advanced until the first source is encountered. 947 * The parsed operator is applied to each node in the 'targets' list, 948 * which is where the nodes found for the targets are kept, by means of 949 * the ParseDoOp function. 950 * The sources are read in much the same way as the targets were except 951 * that now they are expanded using the wildcarding scheme of the C-Shell 952 * and all instances of the resulting words in the list of all targets 953 * are found. Each of the resulting nodes is then linked to each of the 954 * targets as one of its children. 955 * Certain targets are handled specially. These are the ones detailed 956 * by the specType variable. 957 * The storing of transformation rules is also taken care of here. 958 * A target is recognized as a transformation rule by calling 959 * Suff_IsTransform. If it is a transformation rule, its node is gotten 960 * from the suffix module via Suff_AddTransform rather than the standard 961 * Targ_FindNode in the target module. 962 *--------------------------------------------------------------------- 963 */ 964 static void 965 ParseDoDependency(char *line) 966 { 967 char *cp; /* our current position */ 968 GNode *gn = NULL; /* a general purpose temporary node */ 969 int op; /* the operator on the line */ 970 char savec; /* a place to save a character */ 971 Lst paths; /* List of search paths to alter when parsing 972 * a list of .PATH targets */ 973 int tOp; /* operator from special target */ 974 Lst sources; /* list of archive source names after 975 * expansion */ 976 Lst curTargs; /* list of target names to be found and added 977 * to the targets list */ 978 Lst curSrcs; /* list of sources in order */ 979 char *lstart = line; 980 Boolean hasWait; /* is .WAIT present in srcs */ 981 982 tOp = 0; 983 984 specType = Not; 985 waiting = 0; 986 paths = (Lst)NULL; 987 988 curTargs = Lst_Init(FALSE); 989 curSrcs = Lst_Init(FALSE); 990 991 do { 992 for (cp = line; 993 *cp && (ParseIsEscaped(lstart, cp) || 994 (!isspace ((unsigned char)*cp) && 995 (*cp != '!') && (*cp != ':') && (*cp != LPAREN))); 996 cp++) 997 { 998 if (*cp == '$') { 999 /* 1000 * Must be a dynamic source (would have been expanded 1001 * otherwise), so call the Var module to parse the puppy 1002 * so we can safely advance beyond it...There should be 1003 * no errors in this, as they would have been discovered 1004 * in the initial Var_Subst and we wouldn't be here. 1005 */ 1006 int length; 1007 Boolean freeIt; 1008 char *result; 1009 1010 result=Var_Parse(cp, VAR_CMD, TRUE, &length, &freeIt); 1011 1012 if (freeIt) { 1013 free(result); 1014 } 1015 cp += length-1; 1016 } 1017 continue; 1018 } 1019 if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) { 1020 /* 1021 * Archives must be handled specially to make sure the OP_ARCHV 1022 * flag is set in their 'type' field, for one thing, and because 1023 * things like "archive(file1.o file2.o file3.o)" are permissible. 1024 * Arch_ParseArchive will set 'line' to be the first non-blank 1025 * after the archive-spec. It creates/finds nodes for the members 1026 * and places them on the given list, returning SUCCESS if all 1027 * went well and FAILURE if there was an error in the 1028 * specification. On error, line should remain untouched. 1029 */ 1030 if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) { 1031 Parse_Error(PARSE_FATAL, 1032 "Error in archive specification: \"%s\"", line); 1033 goto out; 1034 } else { 1035 continue; 1036 } 1037 } 1038 savec = *cp; 1039 1040 if (!*cp) { 1041 /* 1042 * Ending a dependency line without an operator is a Bozo 1043 * no-no. As a heuristic, this is also often triggered by 1044 * undetected conflicts from cvs/rcs merges. 1045 */ 1046 if ((strncmp(line, "<<<<<<", 6) == 0) || 1047 (strncmp(line, "======", 6) == 0) || 1048 (strncmp(line, ">>>>>>", 6) == 0)) 1049 Parse_Error(PARSE_FATAL, 1050 "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts"); 1051 else 1052 Parse_Error(PARSE_FATAL, "Need an operator"); 1053 goto out; 1054 } 1055 *cp = '\0'; 1056 /* 1057 * Have a word in line. See if it's a special target and set 1058 * specType to match it. 1059 */ 1060 if (*line == '.' && isupper ((unsigned char)line[1])) { 1061 /* 1062 * See if the target is a special target that must have it 1063 * or its sources handled specially. 1064 */ 1065 int keywd = ParseFindKeyword(line); 1066 if (keywd != -1) { 1067 if (specType == ExPath && parseKeywords[keywd].spec != ExPath) { 1068 Parse_Error(PARSE_FATAL, "Mismatched special targets"); 1069 goto out; 1070 } 1071 1072 specType = parseKeywords[keywd].spec; 1073 tOp = parseKeywords[keywd].op; 1074 1075 /* 1076 * Certain special targets have special semantics: 1077 * .PATH Have to set the dirSearchPath 1078 * variable too 1079 * .MAIN Its sources are only used if 1080 * nothing has been specified to 1081 * create. 1082 * .DEFAULT Need to create a node to hang 1083 * commands on, but we don't want 1084 * it in the graph, nor do we want 1085 * it to be the Main Target, so we 1086 * create it, set OP_NOTMAIN and 1087 * add it to the list, setting 1088 * DEFAULT to the new node for 1089 * later use. We claim the node is 1090 * A transformation rule to make 1091 * life easier later, when we'll 1092 * use Make_HandleUse to actually 1093 * apply the .DEFAULT commands. 1094 * .PHONY The list of targets 1095 * .NOPATH Don't search for file in the path 1096 * .BEGIN 1097 * .END 1098 * .INTERRUPT Are not to be considered the 1099 * main target. 1100 * .NOTPARALLEL Make only one target at a time. 1101 * .SINGLESHELL Create a shell for each command. 1102 * .ORDER Must set initial predecessor to NIL 1103 */ 1104 switch (specType) { 1105 case ExPath: 1106 if (paths == NULL) { 1107 paths = Lst_Init(FALSE); 1108 } 1109 (void)Lst_AtEnd(paths, (ClientData)dirSearchPath); 1110 break; 1111 case Main: 1112 if (!Lst_IsEmpty(create)) { 1113 specType = Not; 1114 } 1115 break; 1116 case Begin: 1117 case End: 1118 case Interrupt: 1119 gn = Targ_FindNode(line, TARG_CREATE); 1120 gn->type |= OP_NOTMAIN|OP_SPECIAL; 1121 (void)Lst_AtEnd(targets, (ClientData)gn); 1122 break; 1123 case Default: 1124 gn = Targ_NewGN(".DEFAULT"); 1125 gn->type |= (OP_NOTMAIN|OP_TRANSFORM); 1126 (void)Lst_AtEnd(targets, (ClientData)gn); 1127 DEFAULT = gn; 1128 break; 1129 case NotParallel: 1130 not_parallel = 1; 1131 break; 1132 case SingleShell: 1133 compatMake = TRUE; 1134 break; 1135 case Order: 1136 predecessor = NILGNODE; 1137 break; 1138 default: 1139 break; 1140 } 1141 } else if (strncmp(line, ".PATH", 5) == 0) { 1142 /* 1143 * .PATH<suffix> has to be handled specially. 1144 * Call on the suffix module to give us a path to 1145 * modify. 1146 */ 1147 Lst path; 1148 1149 specType = ExPath; 1150 path = Suff_GetPath(&line[5]); 1151 if (path == NILLST) { 1152 Parse_Error(PARSE_FATAL, 1153 "Suffix '%s' not defined (yet)", 1154 &line[5]); 1155 goto out; 1156 } else { 1157 if (paths == (Lst)NULL) { 1158 paths = Lst_Init(FALSE); 1159 } 1160 (void)Lst_AtEnd(paths, (ClientData)path); 1161 } 1162 } 1163 } 1164 1165 /* 1166 * Have word in line. Get or create its node and stick it at 1167 * the end of the targets list 1168 */ 1169 if ((specType == Not) && (*line != '\0')) { 1170 if (Dir_HasWildcards(line)) { 1171 /* 1172 * Targets are to be sought only in the current directory, 1173 * so create an empty path for the thing. Note we need to 1174 * use Dir_Destroy in the destruction of the path as the 1175 * Dir module could have added a directory to the path... 1176 */ 1177 Lst emptyPath = Lst_Init(FALSE); 1178 1179 Dir_Expand(line, emptyPath, curTargs); 1180 1181 Lst_Destroy(emptyPath, Dir_Destroy); 1182 } else { 1183 /* 1184 * No wildcards, but we want to avoid code duplication, 1185 * so create a list with the word on it. 1186 */ 1187 (void)Lst_AtEnd(curTargs, (ClientData)line); 1188 } 1189 1190 while(!Lst_IsEmpty(curTargs)) { 1191 char *targName = (char *)Lst_DeQueue(curTargs); 1192 1193 if (!Suff_IsTransform (targName)) { 1194 gn = Targ_FindNode(targName, TARG_CREATE); 1195 } else { 1196 gn = Suff_AddTransform(targName); 1197 } 1198 1199 (void)Lst_AtEnd(targets, (ClientData)gn); 1200 } 1201 } else if (specType == ExPath && *line != '.' && *line != '\0') { 1202 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line); 1203 } 1204 1205 *cp = savec; 1206 /* 1207 * If it is a special type and not .PATH, it's the only target we 1208 * allow on this line... 1209 */ 1210 if (specType != Not && specType != ExPath) { 1211 Boolean warn = FALSE; 1212 1213 while (*cp && (ParseIsEscaped(lstart, cp) || 1214 ((*cp != '!') && (*cp != ':')))) { 1215 if (ParseIsEscaped(lstart, cp) || 1216 (*cp != ' ' && *cp != '\t')) { 1217 warn = TRUE; 1218 } 1219 cp++; 1220 } 1221 if (warn) { 1222 Parse_Error(PARSE_WARNING, "Extra target ignored"); 1223 } 1224 } else { 1225 while (*cp && isspace ((unsigned char)*cp)) { 1226 cp++; 1227 } 1228 } 1229 line = cp; 1230 } while (*line && (ParseIsEscaped(lstart, line) || 1231 ((*line != '!') && (*line != ':')))); 1232 1233 /* 1234 * Don't need the list of target names anymore... 1235 */ 1236 Lst_Destroy(curTargs, NOFREE); 1237 curTargs = NULL; 1238 1239 if (!Lst_IsEmpty(targets)) { 1240 switch(specType) { 1241 default: 1242 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored"); 1243 break; 1244 case Default: 1245 case Begin: 1246 case End: 1247 case Interrupt: 1248 /* 1249 * These four create nodes on which to hang commands, so 1250 * targets shouldn't be empty... 1251 */ 1252 case Not: 1253 /* 1254 * Nothing special here -- targets can be empty if it wants. 1255 */ 1256 break; 1257 } 1258 } 1259 1260 /* 1261 * Have now parsed all the target names. Must parse the operator next. The 1262 * result is left in op . 1263 */ 1264 if (*cp == '!') { 1265 op = OP_FORCE; 1266 } else if (*cp == ':') { 1267 if (cp[1] == ':') { 1268 op = OP_DOUBLEDEP; 1269 cp++; 1270 } else { 1271 op = OP_DEPENDS; 1272 } 1273 } else { 1274 Parse_Error(PARSE_FATAL, "Missing dependency operator"); 1275 goto out; 1276 } 1277 1278 cp++; /* Advance beyond operator */ 1279 1280 Lst_ForEach(targets, ParseDoOp, (ClientData)&op); 1281 1282 /* 1283 * Get to the first source 1284 */ 1285 while (*cp && isspace ((unsigned char)*cp)) { 1286 cp++; 1287 } 1288 line = cp; 1289 1290 /* 1291 * Several special targets take different actions if present with no 1292 * sources: 1293 * a .SUFFIXES line with no sources clears out all old suffixes 1294 * a .PRECIOUS line makes all targets precious 1295 * a .IGNORE line ignores errors for all targets 1296 * a .SILENT line creates silence when making all targets 1297 * a .PATH removes all directories from the search path(s). 1298 */ 1299 if (!*line) { 1300 switch (specType) { 1301 case Suffixes: 1302 Suff_ClearSuffixes(); 1303 break; 1304 case Precious: 1305 allPrecious = TRUE; 1306 break; 1307 case Ignore: 1308 ignoreErrors = TRUE; 1309 break; 1310 case Silent: 1311 beSilent = TRUE; 1312 break; 1313 case ExPath: 1314 Lst_ForEach(paths, ParseClearPath, (ClientData)NULL); 1315 Dir_SetPATH(); 1316 break; 1317 #ifdef POSIX 1318 case Posix: 1319 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0); 1320 break; 1321 #endif 1322 default: 1323 break; 1324 } 1325 } else if (specType == MFlags) { 1326 /* 1327 * Call on functions in main.c to deal with these arguments and 1328 * set the initial character to a null-character so the loop to 1329 * get sources won't get anything 1330 */ 1331 Main_ParseArgLine(line); 1332 *line = '\0'; 1333 } else if (specType == ExShell) { 1334 if (Job_ParseShell(line) != SUCCESS) { 1335 Parse_Error(PARSE_FATAL, "improper shell specification"); 1336 goto out; 1337 } 1338 *line = '\0'; 1339 } else if ((specType == NotParallel) || (specType == SingleShell)) { 1340 *line = '\0'; 1341 } 1342 1343 /* 1344 * NOW GO FOR THE SOURCES 1345 */ 1346 if ((specType == Suffixes) || (specType == ExPath) || 1347 (specType == Includes) || (specType == Libs) || 1348 (specType == Null) || (specType == ExObjdir)) 1349 { 1350 while (*line) { 1351 /* 1352 * If the target was one that doesn't take files as its sources 1353 * but takes something like suffixes, we take each 1354 * space-separated word on the line as a something and deal 1355 * with it accordingly. 1356 * 1357 * If the target was .SUFFIXES, we take each source as a 1358 * suffix and add it to the list of suffixes maintained by the 1359 * Suff module. 1360 * 1361 * If the target was a .PATH, we add the source as a directory 1362 * to search on the search path. 1363 * 1364 * If it was .INCLUDES, the source is taken to be the suffix of 1365 * files which will be #included and whose search path should 1366 * be present in the .INCLUDES variable. 1367 * 1368 * If it was .LIBS, the source is taken to be the suffix of 1369 * files which are considered libraries and whose search path 1370 * should be present in the .LIBS variable. 1371 * 1372 * If it was .NULL, the source is the suffix to use when a file 1373 * has no valid suffix. 1374 * 1375 * If it was .OBJDIR, the source is a new definition for .OBJDIR, 1376 * and will cause make to do a new chdir to that path. 1377 */ 1378 while (*cp && !isspace ((unsigned char)*cp)) { 1379 cp++; 1380 } 1381 savec = *cp; 1382 *cp = '\0'; 1383 switch (specType) { 1384 case Suffixes: 1385 Suff_AddSuffix(line, &mainNode); 1386 break; 1387 case ExPath: 1388 Lst_ForEach(paths, ParseAddDir, (ClientData)line); 1389 break; 1390 case Includes: 1391 Suff_AddInclude(line); 1392 break; 1393 case Libs: 1394 Suff_AddLib(line); 1395 break; 1396 case Null: 1397 Suff_SetNull(line); 1398 break; 1399 case ExObjdir: 1400 Main_SetObjdir(line); 1401 break; 1402 default: 1403 break; 1404 } 1405 *cp = savec; 1406 if (savec != '\0') { 1407 cp++; 1408 } 1409 while (*cp && isspace ((unsigned char)*cp)) { 1410 cp++; 1411 } 1412 line = cp; 1413 } 1414 if (paths) { 1415 Lst_Destroy(paths, NOFREE); 1416 } 1417 if (specType == ExPath) 1418 Dir_SetPATH(); 1419 } else { 1420 /* 1421 * We don't need ParseDoSpecialSrc unless .WAIT is present. 1422 */ 1423 hasWait = (strstr(line, ".WAIT") != NULL); 1424 1425 while (*line) { 1426 /* 1427 * The targets take real sources, so we must beware of archive 1428 * specifications (i.e. things with left parentheses in them) 1429 * and handle them accordingly. 1430 */ 1431 while (*cp && !isspace ((unsigned char)*cp)) { 1432 if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) { 1433 /* 1434 * Only stop for a left parenthesis if it isn't at the 1435 * start of a word (that'll be for variable changes 1436 * later) and isn't preceded by a dollar sign (a dynamic 1437 * source). 1438 */ 1439 break; 1440 } else { 1441 cp++; 1442 } 1443 } 1444 1445 if (*cp == LPAREN) { 1446 sources = Lst_Init(FALSE); 1447 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) { 1448 Parse_Error(PARSE_FATAL, 1449 "Error in source archive spec \"%s\"", line); 1450 goto out; 1451 } 1452 1453 while (!Lst_IsEmpty (sources)) { 1454 gn = (GNode *)Lst_DeQueue(sources); 1455 ParseDoSrc(tOp, gn->name, curSrcs, hasWait); 1456 } 1457 Lst_Destroy(sources, NOFREE); 1458 cp = line; 1459 } else { 1460 if (*cp) { 1461 *cp = '\0'; 1462 cp += 1; 1463 } 1464 1465 ParseDoSrc(tOp, line, curSrcs, hasWait); 1466 } 1467 while (*cp && isspace ((unsigned char)*cp)) { 1468 cp++; 1469 } 1470 line = cp; 1471 } 1472 } 1473 1474 if (mainNode == NILGNODE) { 1475 /* 1476 * If we have yet to decide on a main target to make, in the 1477 * absence of any user input, we want the first target on 1478 * the first dependency line that is actually a real target 1479 * (i.e. isn't a .USE or .EXEC rule) to be made. 1480 */ 1481 Lst_ForEach(targets, ParseFindMain, (ClientData)0); 1482 } 1483 1484 out: 1485 if (curTargs) 1486 Lst_Destroy(curTargs, NOFREE); 1487 /* 1488 * Finally, destroy the list of sources 1489 */ 1490 Lst_Destroy(curSrcs, NOFREE); 1491 } 1492 1493 /*- 1494 *--------------------------------------------------------------------- 1495 * Parse_IsVar -- 1496 * Return TRUE if the passed line is a variable assignment. A variable 1497 * assignment consists of a single word followed by optional whitespace 1498 * followed by either a += or an = operator. 1499 * This function is used both by the Parse_File function and main when 1500 * parsing the command-line arguments. 1501 * 1502 * Input: 1503 * line the line to check 1504 * 1505 * Results: 1506 * TRUE if it is. FALSE if it ain't 1507 * 1508 * Side Effects: 1509 * none 1510 *--------------------------------------------------------------------- 1511 */ 1512 Boolean 1513 Parse_IsVar(char *line) 1514 { 1515 Boolean wasSpace = FALSE; /* set TRUE if found a space */ 1516 Boolean haveName = FALSE; /* Set TRUE if have a variable name */ 1517 int level = 0; 1518 #define ISEQOPERATOR(c) \ 1519 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!')) 1520 1521 /* 1522 * Skip to variable name 1523 */ 1524 for (;(*line == ' ') || (*line == '\t'); line++) 1525 continue; 1526 1527 for (; *line != '=' || level != 0; line++) 1528 switch (*line) { 1529 case '\0': 1530 /* 1531 * end-of-line -- can't be a variable assignment. 1532 */ 1533 return FALSE; 1534 1535 case ' ': 1536 case '\t': 1537 /* 1538 * there can be as much white space as desired so long as there is 1539 * only one word before the operator 1540 */ 1541 wasSpace = TRUE; 1542 break; 1543 1544 case LPAREN: 1545 case '{': 1546 level++; 1547 break; 1548 1549 case '}': 1550 case RPAREN: 1551 level--; 1552 break; 1553 1554 default: 1555 if (wasSpace && haveName) { 1556 if (ISEQOPERATOR(*line)) { 1557 /* 1558 * We must have a finished word 1559 */ 1560 if (level != 0) 1561 return FALSE; 1562 1563 /* 1564 * When an = operator [+?!:] is found, the next 1565 * character must be an = or it ain't a valid 1566 * assignment. 1567 */ 1568 if (line[1] == '=') 1569 return haveName; 1570 #ifdef SUNSHCMD 1571 /* 1572 * This is a shell command 1573 */ 1574 if (strncmp(line, ":sh", 3) == 0) 1575 return haveName; 1576 #endif 1577 } 1578 /* 1579 * This is the start of another word, so not assignment. 1580 */ 1581 return FALSE; 1582 } 1583 else { 1584 haveName = TRUE; 1585 wasSpace = FALSE; 1586 } 1587 break; 1588 } 1589 1590 return haveName; 1591 } 1592 1593 /*- 1594 *--------------------------------------------------------------------- 1595 * Parse_DoVar -- 1596 * Take the variable assignment in the passed line and do it in the 1597 * global context. 1598 * 1599 * Note: There is a lexical ambiguity with assignment modifier characters 1600 * in variable names. This routine interprets the character before the = 1601 * as a modifier. Therefore, an assignment like 1602 * C++=/usr/bin/CC 1603 * is interpreted as "C+ +=" instead of "C++ =". 1604 * 1605 * Input: 1606 * line a line guaranteed to be a variable assignment. 1607 * This reduces error checks 1608 * ctxt Context in which to do the assignment 1609 * 1610 * Results: 1611 * none 1612 * 1613 * Side Effects: 1614 * the variable structure of the given variable name is altered in the 1615 * global context. 1616 *--------------------------------------------------------------------- 1617 */ 1618 void 1619 Parse_DoVar(char *line, GNode *ctxt) 1620 { 1621 char *cp; /* pointer into line */ 1622 enum { 1623 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL 1624 } type; /* Type of assignment */ 1625 char *opc; /* ptr to operator character to 1626 * null-terminate the variable name */ 1627 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed, 1628 * i.e. if any variable expansion was 1629 * performed */ 1630 /* 1631 * Avoid clobbered variable warnings by forcing the compiler 1632 * to ``unregister'' variables 1633 */ 1634 #if __GNUC__ 1635 (void) &cp; 1636 (void) &line; 1637 #endif 1638 1639 /* 1640 * Skip to variable name 1641 */ 1642 while ((*line == ' ') || (*line == '\t')) { 1643 line++; 1644 } 1645 1646 /* 1647 * Skip to operator character, nulling out whitespace as we go 1648 */ 1649 for (cp = line + 1; *cp != '='; cp++) { 1650 if (isspace ((unsigned char)*cp)) { 1651 *cp = '\0'; 1652 } 1653 } 1654 opc = cp-1; /* operator is the previous character */ 1655 *cp++ = '\0'; /* nuke the = */ 1656 1657 /* 1658 * Check operator type 1659 */ 1660 switch (*opc) { 1661 case '+': 1662 type = VAR_APPEND; 1663 *opc = '\0'; 1664 break; 1665 1666 case '?': 1667 /* 1668 * If the variable already has a value, we don't do anything. 1669 */ 1670 *opc = '\0'; 1671 if (Var_Exists(line, ctxt)) { 1672 return; 1673 } else { 1674 type = VAR_NORMAL; 1675 } 1676 break; 1677 1678 case ':': 1679 type = VAR_SUBST; 1680 *opc = '\0'; 1681 break; 1682 1683 case '!': 1684 type = VAR_SHELL; 1685 *opc = '\0'; 1686 break; 1687 1688 default: 1689 #ifdef SUNSHCMD 1690 while (opc > line && *opc != ':') 1691 opc--; 1692 1693 if (strncmp(opc, ":sh", 3) == 0) { 1694 type = VAR_SHELL; 1695 *opc = '\0'; 1696 break; 1697 } 1698 #endif 1699 type = VAR_NORMAL; 1700 break; 1701 } 1702 1703 while (isspace ((unsigned char)*cp)) { 1704 cp++; 1705 } 1706 1707 if (type == VAR_APPEND) { 1708 Var_Append(line, cp, ctxt); 1709 } else if (type == VAR_SUBST) { 1710 /* 1711 * Allow variables in the old value to be undefined, but leave their 1712 * invocation alone -- this is done by forcing oldVars to be false. 1713 * XXX: This can cause recursive variables, but that's not hard to do, 1714 * and this allows someone to do something like 1715 * 1716 * CFLAGS = $(.INCLUDES) 1717 * CFLAGS := -I.. $(CFLAGS) 1718 * 1719 * And not get an error. 1720 */ 1721 Boolean oldOldVars = oldVars; 1722 1723 oldVars = FALSE; 1724 1725 /* 1726 * make sure that we set the variable the first time to nothing 1727 * so that it gets substituted! 1728 */ 1729 if (!Var_Exists(line, ctxt)) 1730 Var_Set(line, "", ctxt, 0); 1731 1732 cp = Var_Subst(NULL, cp, ctxt, FALSE); 1733 oldVars = oldOldVars; 1734 freeCp = TRUE; 1735 1736 Var_Set(line, cp, ctxt, 0); 1737 } else if (type == VAR_SHELL) { 1738 char *res; 1739 const char *err; 1740 1741 if (strchr(cp, '$') != NULL) { 1742 /* 1743 * There's a dollar sign in the command, so perform variable 1744 * expansion on the whole thing. The resulting string will need 1745 * freeing when we're done, so set freeCmd to TRUE. 1746 */ 1747 cp = Var_Subst(NULL, cp, VAR_CMD, TRUE); 1748 freeCp = TRUE; 1749 } 1750 1751 res = Cmd_Exec(cp, &err); 1752 Var_Set(line, res, ctxt, 0); 1753 free(res); 1754 1755 if (err) 1756 Parse_Error(PARSE_WARNING, err, cp); 1757 } else { 1758 /* 1759 * Normal assignment -- just do it. 1760 */ 1761 Var_Set(line, cp, ctxt, 0); 1762 } 1763 if (strcmp(line, MAKEOVERRIDES) == 0) 1764 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */ 1765 else if (strcmp(line, ".CURDIR") == 0) { 1766 /* 1767 * Somone is being (too?) clever... 1768 * Let's pretend they know what they are doing and 1769 * re-initialize the 'cur' Path. 1770 */ 1771 Dir_InitCur(cp); 1772 Dir_SetPATH(); 1773 } 1774 if (freeCp) 1775 free(cp); 1776 } 1777 1778 1779 /*- 1780 * ParseAddCmd -- 1781 * Lst_ForEach function to add a command line to all targets 1782 * 1783 * Input: 1784 * gnp the node to which the command is to be added 1785 * cmd the command to add 1786 * 1787 * Results: 1788 * Always 0 1789 * 1790 * Side Effects: 1791 * A new element is added to the commands list of the node. 1792 */ 1793 static int 1794 ParseAddCmd(ClientData gnp, ClientData cmd) 1795 { 1796 GNode *gn = (GNode *)gnp; 1797 /* if target already supplied, ignore commands */ 1798 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) 1799 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts)); 1800 if (!(gn->type & OP_HAS_COMMANDS)) { 1801 (void)Lst_AtEnd(gn->commands, cmd); 1802 ParseMark(gn); 1803 } else { 1804 #ifdef notyet 1805 /* XXX: We cannot do this until we fix the tree */ 1806 (void)Lst_AtEnd(gn->commands, cmd); 1807 Parse_Error(PARSE_WARNING, 1808 "overriding commands for target \"%s\"; " 1809 "previous commands defined at %s: %d ignored", 1810 gn->name, gn->fname, gn->lineno); 1811 #else 1812 Parse_Error(PARSE_WARNING, 1813 "duplicate script for target \"%s\" ignored", 1814 gn->name); 1815 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING, 1816 "using previous script for \"%s\" defined here", 1817 gn->name); 1818 #endif 1819 } 1820 return(0); 1821 } 1822 1823 /*- 1824 *----------------------------------------------------------------------- 1825 * ParseHasCommands -- 1826 * Callback procedure for Parse_File when destroying the list of 1827 * targets on the last dependency line. Marks a target as already 1828 * having commands if it does, to keep from having shell commands 1829 * on multiple dependency lines. 1830 * 1831 * Input: 1832 * gnp Node to examine 1833 * 1834 * Results: 1835 * None 1836 * 1837 * Side Effects: 1838 * OP_HAS_COMMANDS may be set for the target. 1839 * 1840 *----------------------------------------------------------------------- 1841 */ 1842 static void 1843 ParseHasCommands(ClientData gnp) 1844 { 1845 GNode *gn = (GNode *)gnp; 1846 if (!Lst_IsEmpty(gn->commands)) { 1847 gn->type |= OP_HAS_COMMANDS; 1848 } 1849 } 1850 1851 /*- 1852 *----------------------------------------------------------------------- 1853 * Parse_AddIncludeDir -- 1854 * Add a directory to the path searched for included makefiles 1855 * bracketed by double-quotes. Used by functions in main.c 1856 * 1857 * Input: 1858 * dir The name of the directory to add 1859 * 1860 * Results: 1861 * None. 1862 * 1863 * Side Effects: 1864 * The directory is appended to the list. 1865 * 1866 *----------------------------------------------------------------------- 1867 */ 1868 void 1869 Parse_AddIncludeDir(char *dir) 1870 { 1871 (void)Dir_AddDir(parseIncPath, dir); 1872 } 1873 1874 /*- 1875 *--------------------------------------------------------------------- 1876 * ParseDoInclude -- 1877 * Push to another file. 1878 * 1879 * The input is the line minus the `.'. A file spec is a string 1880 * enclosed in <> or "". The former is looked for only in sysIncPath. 1881 * The latter in . and the directories specified by -I command line 1882 * options 1883 * 1884 * Results: 1885 * None 1886 * 1887 * Side Effects: 1888 * A structure is added to the includes Lst and readProc, lineno, 1889 * fname and curFILE are altered for the new file 1890 *--------------------------------------------------------------------- 1891 */ 1892 static void 1893 ParseDoInclude(char *line) 1894 { 1895 char *fullname; /* full pathname of file */ 1896 IFile *oldFile; /* state associated with current file */ 1897 char endc; /* the character which ends the file spec */ 1898 char *cp; /* current position in file spec */ 1899 Boolean isSystem; /* TRUE if makefile is a system makefile */ 1900 int silent = (*line != 'i') ? 1 : 0; 1901 char *file = &line[7 + silent]; 1902 1903 /* 1904 * Skip to delimiter character so we know where to look 1905 */ 1906 while ((*file == ' ') || (*file == '\t')) { 1907 file++; 1908 } 1909 1910 if ((*file != '"') && (*file != '<')) { 1911 Parse_Error(PARSE_FATAL, 1912 ".include filename must be delimited by '\"' or '<'"); 1913 return; 1914 } 1915 1916 /* 1917 * Set the search path on which to find the include file based on the 1918 * characters which bracket its name. Angle-brackets imply it's 1919 * a system Makefile while double-quotes imply it's a user makefile 1920 */ 1921 if (*file == '<') { 1922 isSystem = TRUE; 1923 endc = '>'; 1924 } else { 1925 isSystem = FALSE; 1926 endc = '"'; 1927 } 1928 1929 /* 1930 * Skip to matching delimiter 1931 */ 1932 for (cp = ++file; *cp && *cp != endc; cp++) { 1933 continue; 1934 } 1935 1936 if (*cp != endc) { 1937 Parse_Error(PARSE_FATAL, 1938 "Unclosed %cinclude filename. '%c' expected", 1939 '.', endc); 1940 return; 1941 } 1942 *cp = '\0'; 1943 1944 /* 1945 * Substitute for any variables in the file name before trying to 1946 * find the thing. 1947 */ 1948 file = Var_Subst(NULL, file, VAR_CMD, FALSE); 1949 1950 /* 1951 * Now we know the file's name and its search path, we attempt to 1952 * find the durn thing. A return of NULL indicates the file don't 1953 * exist. 1954 */ 1955 fullname = NULL; 1956 1957 if (!isSystem) { 1958 /* 1959 * Include files contained in double-quotes are first searched for 1960 * relative to the including file's location. We don't want to 1961 * cd there, of course, so we just tack on the old file's 1962 * leading path components and call Dir_FindFile to see if 1963 * we can locate the beast. 1964 */ 1965 char *prefEnd, *Fname; 1966 1967 /* Make a temporary copy of this, to be safe. */ 1968 Fname = estrdup(curFile.fname); 1969 1970 prefEnd = strrchr(Fname, '/'); 1971 if (prefEnd != NULL) { 1972 char *newName; 1973 1974 *prefEnd = '\0'; 1975 if (file[0] == '/') 1976 newName = estrdup(file); 1977 else 1978 newName = str_concat(Fname, file, STR_ADDSLASH); 1979 fullname = Dir_FindFile(newName, parseIncPath); 1980 if (fullname == NULL) { 1981 fullname = Dir_FindFile(newName, dirSearchPath); 1982 } 1983 free(newName); 1984 *prefEnd = '/'; 1985 } else { 1986 fullname = NULL; 1987 } 1988 free(Fname); 1989 if (fullname == NULL) { 1990 /* 1991 * Makefile wasn't found in same directory as included makefile. 1992 * Search for it first on the -I search path, 1993 * then on the .PATH search path, if not found in a -I directory. 1994 * XXX: Suffix specific? 1995 */ 1996 fullname = Dir_FindFile(file, parseIncPath); 1997 if (fullname == NULL) { 1998 fullname = Dir_FindFile(file, dirSearchPath); 1999 } 2000 } 2001 } 2002 2003 /* Looking for a system file or file still not found */ 2004 if (fullname == NULL) { 2005 /* 2006 * Look for it on the system path 2007 */ 2008 fullname = Dir_FindFile(file, Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2009 } 2010 2011 if (fullname == NULL) { 2012 *cp = endc; 2013 if (!silent) 2014 Parse_Error(PARSE_FATAL, "Could not find %s", file); 2015 return; 2016 } 2017 2018 free(file); 2019 2020 /* 2021 * Once we find the absolute path to the file, we get to save all the 2022 * state from the current file before we can start reading this 2023 * include file. The state is stored in an IFile structure which 2024 * is placed on a list with other IFile structures. The list makes 2025 * a very nice stack to track how we got here... 2026 */ 2027 oldFile = emalloc(sizeof(IFile)); 2028 2029 memcpy(oldFile, &curFile, sizeof(IFile)); 2030 2031 (void)Lst_AtFront(includes, (ClientData)oldFile); 2032 2033 /* 2034 * Once the previous state has been saved, we can get down to reading 2035 * the new file. We set up the name of the file to be the absolute 2036 * name of the include file so error messages refer to the right 2037 * place. Naturally enough, we start reading at line number 0. 2038 */ 2039 curFile.fname = fullname; 2040 curFile.lineno = 0; 2041 2042 ParseSetParseFile(curFile.fname); 2043 2044 curFile.F = fopen(fullname, "r"); 2045 curFile.P = NULL; 2046 2047 if (curFile.F == (FILE * ) NULL) { 2048 if (!silent) 2049 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname); 2050 /* 2051 * Pop to previous file 2052 */ 2053 (void)ParseEOF(0); 2054 } 2055 } 2056 2057 2058 /*- 2059 *--------------------------------------------------------------------- 2060 * ParseSetParseFile -- 2061 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and 2062 * basename of the given filename 2063 * 2064 * Results: 2065 * None 2066 * 2067 * Side Effects: 2068 * The .PARSEDIR and .PARSEFILE variables are overwritten by the 2069 * dirname and basename of the given filename. 2070 *--------------------------------------------------------------------- 2071 */ 2072 static void 2073 ParseSetParseFile(char *filename) 2074 { 2075 char *slash; 2076 2077 slash = strrchr(filename, '/'); 2078 if (slash == 0) { 2079 Var_Set(".PARSEDIR", ".", VAR_GLOBAL, 0); 2080 Var_Set(".PARSEFILE", filename, VAR_GLOBAL, 0); 2081 } else { 2082 *slash = '\0'; 2083 Var_Set(".PARSEDIR", filename, VAR_GLOBAL, 0); 2084 Var_Set(".PARSEFILE", slash+1, VAR_GLOBAL, 0); 2085 *slash = '/'; 2086 } 2087 } 2088 2089 2090 /*- 2091 *--------------------------------------------------------------------- 2092 * Parse_FromString -- 2093 * Start Parsing from the given string 2094 * 2095 * Results: 2096 * None 2097 * 2098 * Side Effects: 2099 * A structure is added to the includes Lst and readProc, lineno, 2100 * fname and curFILE are altered for the new file 2101 *--------------------------------------------------------------------- 2102 */ 2103 void 2104 Parse_FromString(char *str, int lineno) 2105 { 2106 IFile *oldFile; /* state associated with this file */ 2107 2108 if (DEBUG(FOR)) 2109 (void)fprintf(stderr, "%s\n---- at line %d\n", str, lineno); 2110 2111 oldFile = emalloc(sizeof(IFile)); 2112 memcpy(oldFile, &curFile, sizeof(IFile)); 2113 2114 (void)Lst_AtFront(includes, (ClientData)oldFile); 2115 2116 curFile.F = NULL; 2117 curFile.P = emalloc(sizeof(PTR)); 2118 curFile.P->str = curFile.P->ptr = str; 2119 curFile.lineno = lineno; 2120 curFile.fname = estrdup(curFile.fname); 2121 } 2122 2123 2124 #ifdef SYSVINCLUDE 2125 /*- 2126 *--------------------------------------------------------------------- 2127 * ParseTraditionalInclude -- 2128 * Push to another file. 2129 * 2130 * The input is the current line. The file name(s) are 2131 * following the "include". 2132 * 2133 * Results: 2134 * None 2135 * 2136 * Side Effects: 2137 * A structure is added to the includes Lst and readProc, lineno, 2138 * fname and curFILE are altered for the new file 2139 *--------------------------------------------------------------------- 2140 */ 2141 static void 2142 ParseTraditionalInclude(char *line) 2143 { 2144 char *fullname; /* full pathname of file */ 2145 IFile *oldFile; /* state associated with current file */ 2146 char *cp; /* current position in file spec */ 2147 char *prefEnd; 2148 int done = 0; 2149 int silent = (line[0] != 'i') ? 1 : 0; 2150 char *file = &line[silent + 7]; 2151 char *cfname; 2152 size_t clineno; 2153 2154 cfname = curFile.fname; 2155 clineno = curFile.lineno; 2156 2157 if (DEBUG(PARSE)) { 2158 printf("ParseTraditionalInclude: %s\n", file); 2159 } 2160 2161 /* 2162 * Skip over whitespace 2163 */ 2164 while (isspace((unsigned char)*file)) 2165 file++; 2166 2167 /* 2168 * Substitute for any variables in the file name before trying to 2169 * find the thing. 2170 */ 2171 file = Var_Subst(NULL, file, VAR_CMD, FALSE); 2172 2173 if (*file == '\0') { 2174 Parse_Error(PARSE_FATAL, 2175 "Filename missing from \"include\""); 2176 return; 2177 } 2178 2179 for (; !done; file = cp + 1) { 2180 /* 2181 * Skip to end of line or next whitespace 2182 */ 2183 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++) 2184 continue; 2185 2186 if (*cp) 2187 *cp = '\0'; 2188 else 2189 done = 1; 2190 2191 /* 2192 * Now we know the file's name, we attempt to find the durn thing. 2193 * A return of NULL indicates the file don't exist. 2194 * 2195 * Include files are first searched for relative to the including 2196 * file's location. We don't want to cd there, of course, so we 2197 * just tack on the old file's leading path components and call 2198 * Dir_FindFile to see if we can locate the beast. 2199 * XXX - this *does* search in the current directory, right? 2200 */ 2201 2202 prefEnd = strrchr(cfname, '/'); 2203 if (prefEnd != NULL) { 2204 char *newName; 2205 2206 *prefEnd = '\0'; 2207 newName = str_concat(cfname, file, STR_ADDSLASH); 2208 fullname = Dir_FindFile(newName, parseIncPath); 2209 if (fullname == NULL) { 2210 fullname = Dir_FindFile(newName, dirSearchPath); 2211 } 2212 free(newName); 2213 *prefEnd = '/'; 2214 } else { 2215 fullname = NULL; 2216 } 2217 2218 if (fullname == NULL) { 2219 /* 2220 * System makefile or makefile wasn't found in same directory as 2221 * included makefile. Search for it first on the -I search path, 2222 * then on the .PATH search path, if not found in a 2223 * -I directory. XXX: Suffix specific? 2224 */ 2225 fullname = Dir_FindFile(file, parseIncPath); 2226 if (fullname == NULL) { 2227 fullname = Dir_FindFile(file, dirSearchPath); 2228 } 2229 } 2230 2231 if (fullname == NULL) { 2232 /* 2233 * Still haven't found the makefile. Look for it on the system 2234 * path as a last resort. 2235 */ 2236 fullname = Dir_FindFile(file, 2237 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2238 } 2239 2240 if (fullname == NULL) { 2241 if (!silent) 2242 ParseErrorInternal(cfname, clineno, PARSE_FATAL, 2243 "Could not find %s", file); 2244 free(file); 2245 continue; 2246 } 2247 2248 free(file); 2249 2250 /* 2251 * Once we find the absolute path to the file, we get to save all 2252 * the state from the current file before we can start reading this 2253 * include file. The state is stored in an IFile structure which 2254 * is placed on a list with other IFile structures. The list makes 2255 * a very nice stack to track how we got here... 2256 */ 2257 oldFile = emalloc(sizeof(IFile)); 2258 memcpy(oldFile, &curFile, sizeof(IFile)); 2259 2260 (void)Lst_AtFront(includes, (ClientData)oldFile); 2261 2262 /* 2263 * Once the previous state has been saved, we can get down to 2264 * reading the new file. We set up the name of the file to be the 2265 * absolute name of the include file so error messages refer to the 2266 * right place. Naturally enough, we start reading at line number 0. 2267 */ 2268 curFile.fname = fullname; 2269 curFile.lineno = 0; 2270 2271 curFile.F = fopen(fullname, "r"); 2272 curFile.P = NULL; 2273 2274 if (curFile.F == NULL) { 2275 if (!silent) 2276 ParseErrorInternal(cfname, clineno, PARSE_FATAL, 2277 "Cannot open %s", fullname); 2278 /* 2279 * Pop to previous file 2280 */ 2281 (void)ParseEOF(1); 2282 } 2283 } 2284 } 2285 #endif 2286 2287 /*- 2288 *--------------------------------------------------------------------- 2289 * ParseEOF -- 2290 * Called when EOF is reached in the current file. If we were reading 2291 * an include file, the includes stack is popped and things set up 2292 * to go back to reading the previous file at the previous location. 2293 * 2294 * Results: 2295 * CONTINUE if there's more to do. DONE if not. 2296 * 2297 * Side Effects: 2298 * The old curFILE, is closed. The includes list is shortened. 2299 * lineno, curFILE, and fname are changed if CONTINUE is returned. 2300 *--------------------------------------------------------------------- 2301 */ 2302 static int 2303 ParseEOF(int opened) 2304 { 2305 IFile *ifile; /* the state on the top of the includes stack */ 2306 2307 if (Lst_IsEmpty(includes)) { 2308 Var_Delete(".PARSEDIR", VAR_GLOBAL); 2309 Var_Delete(".PARSEFILE", VAR_GLOBAL); 2310 return (DONE); 2311 } 2312 2313 ifile = (IFile *)Lst_DeQueue(includes); 2314 2315 /* XXX dispose of curFile info */ 2316 free( curFile.fname); 2317 if (opened && curFile.F) 2318 (void)fclose(curFile.F); 2319 if (curFile.P) { 2320 free(curFile.P->str); 2321 free(curFile.P); 2322 } 2323 2324 memcpy(&curFile, ifile, sizeof(IFile)); 2325 2326 free(ifile); 2327 2328 /* pop the PARSEDIR/PARSEFILE variables */ 2329 ParseSetParseFile(curFile.fname); 2330 return (CONTINUE); 2331 } 2332 2333 /*- 2334 *--------------------------------------------------------------------- 2335 * ParseReadc -- 2336 * Read a character from the current file 2337 * 2338 * Results: 2339 * The character that was read 2340 * 2341 * Side Effects: 2342 *--------------------------------------------------------------------- 2343 */ 2344 static inline int 2345 ParseReadc(void) 2346 { 2347 if (curFile.F) 2348 return fgetc(curFile.F); 2349 2350 if (curFile.P && *curFile.P->ptr) 2351 return *curFile.P->ptr++; 2352 return EOF; 2353 } 2354 2355 2356 /*- 2357 *--------------------------------------------------------------------- 2358 * ParseUnreadc -- 2359 * Put back a character to the current file 2360 * 2361 * Results: 2362 * None. 2363 * 2364 * Side Effects: 2365 *--------------------------------------------------------------------- 2366 */ 2367 static void 2368 ParseUnreadc(int c) 2369 { 2370 if (curFile.F) { 2371 ungetc(c, curFile.F); 2372 return; 2373 } 2374 if (curFile.P) { 2375 *--(curFile.P->ptr) = c; 2376 return; 2377 } 2378 } 2379 2380 2381 /* ParseSkipLine(): 2382 * Grab the next line 2383 * 2384 * Input: 2385 * skip Skip lines that don't start with . 2386 * keep_newline Keep newline character as is. 2387 * 2388 */ 2389 static char * 2390 ParseSkipLine(int skip, int keep_newline) 2391 { 2392 char *line; 2393 int c, lastc, lineLength = 0; 2394 Buffer buf; 2395 2396 buf = Buf_Init(MAKE_BSIZE); 2397 2398 do { 2399 Buf_Discard(buf, lineLength); 2400 lastc = '\0'; 2401 2402 while (((c = ParseReadc()) != '\n' || lastc == '\\') 2403 && c != EOF) { 2404 if (c == '\n') { 2405 if (keep_newline) 2406 Buf_AddByte(buf, (Byte)c); 2407 else 2408 Buf_ReplaceLastByte(buf, (Byte)' '); 2409 curFile.lineno++; 2410 2411 while ((c = ParseReadc()) == ' ' || c == '\t'); 2412 2413 if (c == EOF) 2414 break; 2415 } 2416 2417 Buf_AddByte(buf, (Byte)c); 2418 lastc = c; 2419 } 2420 2421 if (c == EOF) { 2422 Parse_Error(PARSE_FATAL, "Unclosed conditional/for loop"); 2423 Buf_Destroy(buf, TRUE); 2424 return(NULL); 2425 } 2426 2427 curFile.lineno++; 2428 Buf_AddByte(buf, (Byte)'\0'); 2429 line = (char *)Buf_GetAll(buf, &lineLength); 2430 } while (skip == 1 && line[0] != '.'); 2431 2432 Buf_Destroy(buf, FALSE); 2433 return line; 2434 } 2435 2436 2437 /*- 2438 *--------------------------------------------------------------------- 2439 * ParseReadLine -- 2440 * Read an entire line from the input file. Called only by Parse_File. 2441 * To facilitate escaped newlines and what have you, a character is 2442 * buffered in 'lastc', which is '\0' when no characters have been 2443 * read. When we break out of the loop, c holds the terminating 2444 * character and lastc holds a character that should be added to 2445 * the line (unless we don't read anything but a terminator). 2446 * 2447 * Results: 2448 * A line w/o its newline 2449 * 2450 * Side Effects: 2451 * Only those associated with reading a character 2452 *--------------------------------------------------------------------- 2453 */ 2454 static char * 2455 ParseReadLine(void) 2456 { 2457 Buffer buf; /* Buffer for current line */ 2458 int c; /* the current character */ 2459 int lastc; /* The most-recent character */ 2460 Boolean semiNL; /* treat semi-colons as newlines */ 2461 Boolean ignDepOp; /* TRUE if should ignore dependency operators 2462 * for the purposes of setting semiNL */ 2463 Boolean ignComment; /* TRUE if should ignore comments (in a 2464 * shell command */ 2465 char *line; /* Result */ 2466 char *ep; /* to strip trailing blanks */ 2467 int lineLength; /* Length of result */ 2468 int lineno; /* Saved line # */ 2469 2470 semiNL = FALSE; 2471 ignDepOp = FALSE; 2472 ignComment = FALSE; 2473 2474 /* 2475 * Handle special-characters at the beginning of the line. Either a 2476 * leading tab (shell command) or pound-sign (possible conditional) 2477 * forces us to ignore comments and dependency operators and treat 2478 * semi-colons as semi-colons (by leaving semiNL FALSE). This also 2479 * discards completely blank lines. 2480 */ 2481 for (;;) { 2482 c = ParseReadc(); 2483 2484 if (c == '\t') { 2485 ignComment = ignDepOp = TRUE; 2486 break; 2487 } else if (c == '\n') { 2488 curFile.lineno++; 2489 } else if (c == '#') { 2490 ParseUnreadc(c); 2491 break; 2492 } else { 2493 /* 2494 * Anything else breaks out without doing anything 2495 */ 2496 break; 2497 } 2498 } 2499 2500 if (c != EOF) { 2501 lastc = c; 2502 buf = Buf_Init(MAKE_BSIZE); 2503 2504 while (((c = ParseReadc()) != '\n' || (lastc == '\\')) && 2505 (c != EOF)) 2506 { 2507 test_char: 2508 switch(c) { 2509 case '\n': 2510 /* 2511 * Escaped newline: read characters until a non-space or an 2512 * unescaped newline and replace them all by a single space. 2513 * This is done by storing the space over the backslash and 2514 * dropping through with the next nonspace. If it is a 2515 * semi-colon and semiNL is TRUE, it will be recognized as a 2516 * newline in the code below this... 2517 */ 2518 curFile.lineno++; 2519 lastc = ' '; 2520 while ((c = ParseReadc()) == ' ' || c == '\t') { 2521 continue; 2522 } 2523 if (c == EOF || c == '\n') { 2524 goto line_read; 2525 } else { 2526 /* 2527 * Check for comments, semiNL's, etc. -- easier than 2528 * ParseUnreadc(c); continue; 2529 */ 2530 goto test_char; 2531 } 2532 /*NOTREACHED*/ 2533 break; 2534 2535 case ';': 2536 /* 2537 * Semi-colon: Need to see if it should be interpreted as a 2538 * newline 2539 */ 2540 if (semiNL) { 2541 /* 2542 * To make sure the command that may be following this 2543 * semi-colon begins with a tab, we push one back into the 2544 * input stream. This will overwrite the semi-colon in the 2545 * buffer. If there is no command following, this does no 2546 * harm, since the newline remains in the buffer and the 2547 * whole line is ignored. 2548 */ 2549 ParseUnreadc('\t'); 2550 goto line_read; 2551 } 2552 break; 2553 case '=': 2554 if (!semiNL) { 2555 /* 2556 * Haven't seen a dependency operator before this, so this 2557 * must be a variable assignment -- don't pay attention to 2558 * dependency operators after this. 2559 */ 2560 ignDepOp = TRUE; 2561 } else if (lastc == ':' || lastc == '!') { 2562 /* 2563 * Well, we've seen a dependency operator already, but it 2564 * was the previous character, so this is really just an 2565 * expanded variable assignment. Revert semi-colons to 2566 * being just semi-colons again and ignore any more 2567 * dependency operators. 2568 * 2569 * XXX: Note that a line like "foo : a:=b" will blow up, 2570 * but who'd write a line like that anyway? 2571 */ 2572 ignDepOp = TRUE; semiNL = FALSE; 2573 } 2574 break; 2575 case '#': 2576 if (!ignComment) { 2577 if ( 2578 #if 0 2579 compatMake && 2580 #endif 2581 (lastc != '\\')) { 2582 /* 2583 * If the character is a hash mark and it isn't escaped 2584 * (or we're being compatible), the thing is a comment. 2585 * Skip to the end of the line. 2586 */ 2587 do { 2588 c = ParseReadc(); 2589 /* 2590 * If we found a backslash not escaped 2591 * itself it means that the comment is 2592 * going to continue in the next line. 2593 */ 2594 if (c == '\\') 2595 ParseReadc(); 2596 } while ((c != '\n') && (c != EOF)); 2597 goto line_read; 2598 } else { 2599 /* 2600 * Don't add the backslash. Just let the # get copied 2601 * over. 2602 */ 2603 lastc = c; 2604 continue; 2605 } 2606 } 2607 break; 2608 case ':': 2609 case '!': 2610 if (!ignDepOp && (c == ':' || c == '!')) { 2611 /* 2612 * A semi-colon is recognized as a newline only on 2613 * dependency lines. Dependency lines are lines with a 2614 * colon or an exclamation point. Ergo... 2615 */ 2616 semiNL = TRUE; 2617 } 2618 break; 2619 } 2620 /* 2621 * Copy in the previous character and save this one in lastc. 2622 */ 2623 Buf_AddByte(buf, (Byte)lastc); 2624 lastc = c; 2625 2626 } 2627 line_read: 2628 curFile.lineno++; 2629 2630 if (lastc != '\0') { 2631 Buf_AddByte(buf, (Byte)lastc); 2632 } 2633 Buf_AddByte(buf, (Byte)'\0'); 2634 line = (char *)Buf_GetAll(buf, &lineLength); 2635 Buf_Destroy(buf, FALSE); 2636 2637 /* 2638 * Strip trailing blanks and tabs from the line. 2639 * Do not strip a blank or tab that is preceded by 2640 * a '\' 2641 */ 2642 ep = line; 2643 while (*ep) 2644 ++ep; 2645 while (ep > line + 1 && (ep[-1] == ' ' || ep[-1] == '\t')) { 2646 if (ep > line + 1 && ep[-2] == '\\') 2647 break; 2648 --ep; 2649 } 2650 *ep = 0; 2651 2652 if (line[0] == '.') { 2653 /* 2654 * The line might be a conditional. Ask the conditional module 2655 * about it and act accordingly 2656 */ 2657 switch (Cond_Eval(line)) { 2658 case COND_SKIP: 2659 /* 2660 * Skip to next conditional that evaluates to COND_PARSE. 2661 */ 2662 do { 2663 free(line); 2664 line = ParseSkipLine(1, 0); 2665 } while (line && Cond_Eval(line) != COND_PARSE); 2666 if (line == NULL) 2667 break; 2668 /*FALLTHRU*/ 2669 case COND_PARSE: 2670 free(line); 2671 line = ParseReadLine(); 2672 break; 2673 case COND_INVALID: 2674 lineno = curFile.lineno; 2675 if (For_Eval(line)) { 2676 int ok; 2677 free(line); 2678 do { 2679 /* 2680 * Skip after the matching end 2681 */ 2682 line = ParseSkipLine(0, 1); 2683 if (line == NULL) { 2684 Parse_Error(PARSE_FATAL, 2685 "Unexpected end of file in for loop.\n"); 2686 break; 2687 } 2688 ok = For_Eval(line); 2689 free(line); 2690 } 2691 while (ok); 2692 if (line != NULL) 2693 For_Run(lineno); 2694 line = ParseReadLine(); 2695 } 2696 break; 2697 } 2698 } 2699 return (line); 2700 2701 } else { 2702 /* 2703 * Hit end-of-file, so return a NULL line to indicate this. 2704 */ 2705 return(NULL); 2706 } 2707 } 2708 2709 /*- 2710 *----------------------------------------------------------------------- 2711 * ParseFinishLine -- 2712 * Handle the end of a dependency group. 2713 * 2714 * Results: 2715 * Nothing. 2716 * 2717 * Side Effects: 2718 * inLine set FALSE. 'targets' list destroyed. 2719 * 2720 *----------------------------------------------------------------------- 2721 */ 2722 static void 2723 ParseFinishLine(void) 2724 { 2725 if (inLine) { 2726 Lst_ForEach(targets, Suff_EndTransform, (ClientData)NULL); 2727 Lst_Destroy(targets, ParseHasCommands); 2728 targets = NULL; 2729 inLine = FALSE; 2730 } 2731 } 2732 2733 2734 /*- 2735 *--------------------------------------------------------------------- 2736 * Parse_File -- 2737 * Parse a file into its component parts, incorporating it into the 2738 * current dependency graph. This is the main function and controls 2739 * almost every other function in this module 2740 * 2741 * Input: 2742 * name the name of the file being read 2743 * stream Stream open to makefile to parse 2744 * 2745 * Results: 2746 * None 2747 * 2748 * Side Effects: 2749 * Loads. Nodes are added to the list of all targets, nodes and links 2750 * are added to the dependency graph. etc. etc. etc. 2751 *--------------------------------------------------------------------- 2752 */ 2753 void 2754 Parse_File(const char *name, FILE *stream) 2755 { 2756 char *cp, /* pointer into the line */ 2757 *line; /* the line we're working on */ 2758 2759 inLine = FALSE; 2760 fatals = 0; 2761 2762 curFile.fname = UNCONST(name); 2763 curFile.F = stream; 2764 curFile.lineno = 0; 2765 2766 ParseSetParseFile(curFile.fname); 2767 2768 do { 2769 while ((line = ParseReadLine()) != NULL) { 2770 if (*line == '.') { 2771 /* 2772 * Lines that begin with the special character are either 2773 * include or undef directives. 2774 */ 2775 for (cp = line + 1; isspace ((unsigned char)*cp); cp++) { 2776 continue; 2777 } 2778 if (strncmp(cp, "include", 7) == 0 || 2779 ((cp[0] == 's' || cp[0] == '-') && 2780 strncmp(&cp[1], "include", 7) == 0)) { 2781 ParseDoInclude(cp); 2782 goto nextLine; 2783 } else if (strncmp(cp, "undef", 5) == 0) { 2784 char *cp2; 2785 for (cp += 5; isspace((unsigned char) *cp); cp++) { 2786 continue; 2787 } 2788 2789 for (cp2 = cp; !isspace((unsigned char) *cp2) && 2790 (*cp2 != '\0'); cp2++) { 2791 continue; 2792 } 2793 2794 *cp2 = '\0'; 2795 2796 Var_Delete(cp, VAR_GLOBAL); 2797 goto nextLine; 2798 } 2799 } 2800 if (*line == '#') { 2801 /* If we're this far, the line must be a comment. */ 2802 goto nextLine; 2803 } 2804 2805 if (*line == '\t') { 2806 /* 2807 * If a line starts with a tab, it can only hope to be 2808 * a creation command. 2809 */ 2810 #ifndef POSIX 2811 shellCommand: 2812 #endif 2813 for (cp = line + 1; isspace ((unsigned char)*cp); cp++) { 2814 continue; 2815 } 2816 if (*cp) { 2817 if (inLine) { 2818 /* 2819 * So long as it's not a blank line and we're actually 2820 * in a dependency spec, add the command to the list of 2821 * commands of all targets in the dependency spec 2822 */ 2823 Lst_ForEach(targets, ParseAddCmd, cp); 2824 #ifdef CLEANUP 2825 Lst_AtEnd(targCmds, (ClientData) line); 2826 #endif 2827 continue; 2828 } else { 2829 Parse_Error(PARSE_FATAL, 2830 "Unassociated shell command \"%s\"", 2831 cp); 2832 } 2833 } 2834 #ifdef SYSVINCLUDE 2835 } else if (((strncmp(line, "include", 7) == 0 && 2836 isspace((unsigned char) line[7])) || 2837 ((line[0] == 's' || line[0] == '-') && 2838 strncmp(&line[1], "include", 7) == 0 && 2839 isspace((unsigned char) line[8]))) && 2840 strchr(line, ':') == NULL) { 2841 /* 2842 * It's an S3/S5-style "include". 2843 */ 2844 ParseTraditionalInclude(line); 2845 goto nextLine; 2846 #endif 2847 } else if (Parse_IsVar(line)) { 2848 ParseFinishLine(); 2849 Parse_DoVar(line, VAR_GLOBAL); 2850 } else { 2851 /* 2852 * We now know it's a dependency line so it needs to have all 2853 * variables expanded before being parsed. Tell the variable 2854 * module to complain if some variable is undefined... 2855 * To make life easier on novices, if the line is indented we 2856 * first make sure the line has a dependency operator in it. 2857 * If it doesn't have an operator and we're in a dependency 2858 * line's script, we assume it's actually a shell command 2859 * and add it to the current list of targets. 2860 */ 2861 #ifndef POSIX 2862 Boolean nonSpace = FALSE; 2863 #endif 2864 2865 cp = line; 2866 if (isspace((unsigned char) line[0])) { 2867 while ((*cp != '\0') && isspace((unsigned char) *cp)) { 2868 cp++; 2869 } 2870 if (*cp == '\0') { 2871 goto nextLine; 2872 } 2873 #ifndef POSIX 2874 while (*cp && (ParseIsEscaped(line, cp) || 2875 (*cp != ':') && (*cp != '!'))) { 2876 nonSpace = TRUE; 2877 cp++; 2878 } 2879 #endif 2880 } 2881 2882 #ifndef POSIX 2883 if (*cp == '\0') { 2884 if (inLine) { 2885 Parse_Error(PARSE_WARNING, 2886 "Shell command needs a leading tab"); 2887 goto shellCommand; 2888 } else if (nonSpace) { 2889 Parse_Error(PARSE_FATAL, "Missing operator"); 2890 } 2891 } else { 2892 #endif 2893 ParseFinishLine(); 2894 2895 cp = Var_Subst(NULL, line, VAR_CMD, TRUE); 2896 free(line); 2897 line = cp; 2898 2899 /* 2900 * Need a non-circular list for the target nodes 2901 */ 2902 if (targets) 2903 Lst_Destroy(targets, NOFREE); 2904 2905 targets = Lst_Init(FALSE); 2906 inLine = TRUE; 2907 2908 ParseDoDependency(line); 2909 #ifndef POSIX 2910 } 2911 #endif 2912 } 2913 2914 nextLine: 2915 2916 free(line); 2917 } 2918 /* 2919 * Reached EOF, but it may be just EOF of an include file... 2920 */ 2921 } while (ParseEOF(1) == CONTINUE); 2922 2923 /* 2924 * Make sure conditionals are clean 2925 */ 2926 Cond_End(); 2927 2928 if (fatals) { 2929 (void)fprintf(stderr, 2930 "%s: Fatal errors encountered -- cannot continue\n", 2931 progname); 2932 PrintOnError(NULL); 2933 exit(1); 2934 } 2935 } 2936 2937 /*- 2938 *--------------------------------------------------------------------- 2939 * Parse_Init -- 2940 * initialize the parsing module 2941 * 2942 * Results: 2943 * none 2944 * 2945 * Side Effects: 2946 * the parseIncPath list is initialized... 2947 *--------------------------------------------------------------------- 2948 */ 2949 void 2950 Parse_Init(void) 2951 { 2952 mainNode = NILGNODE; 2953 parseIncPath = Lst_Init(FALSE); 2954 sysIncPath = Lst_Init(FALSE); 2955 defIncPath = Lst_Init(FALSE); 2956 includes = Lst_Init(FALSE); 2957 #ifdef CLEANUP 2958 targCmds = Lst_Init(FALSE); 2959 #endif 2960 } 2961 2962 void 2963 Parse_End(void) 2964 { 2965 #ifdef CLEANUP 2966 Lst_Destroy(targCmds, (FreeProc *)free); 2967 if (targets) 2968 Lst_Destroy(targets, NOFREE); 2969 Lst_Destroy(defIncPath, Dir_Destroy); 2970 Lst_Destroy(sysIncPath, Dir_Destroy); 2971 Lst_Destroy(parseIncPath, Dir_Destroy); 2972 Lst_Destroy(includes, NOFREE); /* Should be empty now */ 2973 #endif 2974 } 2975 2976 2977 /*- 2978 *----------------------------------------------------------------------- 2979 * Parse_MainName -- 2980 * Return a Lst of the main target to create for main()'s sake. If 2981 * no such target exists, we Punt with an obnoxious error message. 2982 * 2983 * Results: 2984 * A Lst of the single node to create. 2985 * 2986 * Side Effects: 2987 * None. 2988 * 2989 *----------------------------------------------------------------------- 2990 */ 2991 Lst 2992 Parse_MainName(void) 2993 { 2994 Lst mainList; /* result list */ 2995 2996 mainList = Lst_Init(FALSE); 2997 2998 if (mainNode == NILGNODE) { 2999 Punt("no target to make."); 3000 /*NOTREACHED*/ 3001 } else if (mainNode->type & OP_DOUBLEDEP) { 3002 (void)Lst_AtEnd(mainList, (ClientData)mainNode); 3003 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW); 3004 } 3005 else 3006 (void)Lst_AtEnd(mainList, (ClientData)mainNode); 3007 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL); 3008 return (mainList); 3009 } 3010 3011 /*- 3012 *----------------------------------------------------------------------- 3013 * ParseMark -- 3014 * Add the filename and lineno to the GNode so that we remember 3015 * where it was first defined. 3016 * 3017 * Side Effects: 3018 * None. 3019 * 3020 *----------------------------------------------------------------------- 3021 */ 3022 static void 3023 ParseMark(GNode *gn) 3024 { 3025 gn->fname = strdup(curFile.fname); 3026 gn->lineno = curFile.lineno; 3027 } 3028
Indexes created Mon Sep 22 21:09:42 GMT 2025