parse.c revision 1.111
1 /* $NetBSD: parse.c,v 1.111 2006/03/28 17:41:35 ginsbach 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 1.111 2006/03/28 17:41:35 ginsbach 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 1.111 2006/03/28 17:41:35 ginsbach 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 return; 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 return; 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 return; 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 return; 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 1238 if (!Lst_IsEmpty(targets)) { 1239 switch(specType) { 1240 default: 1241 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored"); 1242 break; 1243 case Default: 1244 case Begin: 1245 case End: 1246 case Interrupt: 1247 /* 1248 * These four create nodes on which to hang commands, so 1249 * targets shouldn't be empty... 1250 */ 1251 case Not: 1252 /* 1253 * Nothing special here -- targets can be empty if it wants. 1254 */ 1255 break; 1256 } 1257 } 1258 1259 /* 1260 * Have now parsed all the target names. Must parse the operator next. The 1261 * result is left in op . 1262 */ 1263 if (*cp == '!') { 1264 op = OP_FORCE; 1265 } else if (*cp == ':') { 1266 if (cp[1] == ':') { 1267 op = OP_DOUBLEDEP; 1268 cp++; 1269 } else { 1270 op = OP_DEPENDS; 1271 } 1272 } else { 1273 Parse_Error(PARSE_FATAL, "Missing dependency operator"); 1274 return; 1275 } 1276 1277 cp++; /* Advance beyond operator */ 1278 1279 Lst_ForEach(targets, ParseDoOp, (ClientData)&op); 1280 1281 /* 1282 * Get to the first source 1283 */ 1284 while (*cp && isspace ((unsigned char)*cp)) { 1285 cp++; 1286 } 1287 line = cp; 1288 1289 /* 1290 * Several special targets take different actions if present with no 1291 * sources: 1292 * a .SUFFIXES line with no sources clears out all old suffixes 1293 * a .PRECIOUS line makes all targets precious 1294 * a .IGNORE line ignores errors for all targets 1295 * a .SILENT line creates silence when making all targets 1296 * a .PATH removes all directories from the search path(s). 1297 */ 1298 if (!*line) { 1299 switch (specType) { 1300 case Suffixes: 1301 Suff_ClearSuffixes(); 1302 break; 1303 case Precious: 1304 allPrecious = TRUE; 1305 break; 1306 case Ignore: 1307 ignoreErrors = TRUE; 1308 break; 1309 case Silent: 1310 beSilent = TRUE; 1311 break; 1312 case ExPath: 1313 Lst_ForEach(paths, ParseClearPath, (ClientData)NULL); 1314 Dir_SetPATH(); 1315 break; 1316 #ifdef POSIX 1317 case Posix: 1318 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0); 1319 break; 1320 #endif 1321 default: 1322 break; 1323 } 1324 } else if (specType == MFlags) { 1325 /* 1326 * Call on functions in main.c to deal with these arguments and 1327 * set the initial character to a null-character so the loop to 1328 * get sources won't get anything 1329 */ 1330 Main_ParseArgLine(line); 1331 *line = '\0'; 1332 } else if (specType == ExShell) { 1333 if (Job_ParseShell(line) != SUCCESS) { 1334 Parse_Error(PARSE_FATAL, "improper shell specification"); 1335 return; 1336 } 1337 *line = '\0'; 1338 } else if ((specType == NotParallel) || (specType == SingleShell)) { 1339 *line = '\0'; 1340 } 1341 1342 /* 1343 * NOW GO FOR THE SOURCES 1344 */ 1345 if ((specType == Suffixes) || (specType == ExPath) || 1346 (specType == Includes) || (specType == Libs) || 1347 (specType == Null) || (specType == ExObjdir)) 1348 { 1349 while (*line) { 1350 /* 1351 * If the target was one that doesn't take files as its sources 1352 * but takes something like suffixes, we take each 1353 * space-separated word on the line as a something and deal 1354 * with it accordingly. 1355 * 1356 * If the target was .SUFFIXES, we take each source as a 1357 * suffix and add it to the list of suffixes maintained by the 1358 * Suff module. 1359 * 1360 * If the target was a .PATH, we add the source as a directory 1361 * to search on the search path. 1362 * 1363 * If it was .INCLUDES, the source is taken to be the suffix of 1364 * files which will be #included and whose search path should 1365 * be present in the .INCLUDES variable. 1366 * 1367 * If it was .LIBS, the source is taken to be the suffix of 1368 * files which are considered libraries and whose search path 1369 * should be present in the .LIBS variable. 1370 * 1371 * If it was .NULL, the source is the suffix to use when a file 1372 * has no valid suffix. 1373 * 1374 * If it was .OBJDIR, the source is a new definition for .OBJDIR, 1375 * and will cause make to do a new chdir to that path. 1376 */ 1377 while (*cp && !isspace ((unsigned char)*cp)) { 1378 cp++; 1379 } 1380 savec = *cp; 1381 *cp = '\0'; 1382 switch (specType) { 1383 case Suffixes: 1384 Suff_AddSuffix(line, &mainNode); 1385 break; 1386 case ExPath: 1387 Lst_ForEach(paths, ParseAddDir, (ClientData)line); 1388 break; 1389 case Includes: 1390 Suff_AddInclude(line); 1391 break; 1392 case Libs: 1393 Suff_AddLib(line); 1394 break; 1395 case Null: 1396 Suff_SetNull(line); 1397 break; 1398 case ExObjdir: 1399 Main_SetObjdir(line); 1400 break; 1401 default: 1402 break; 1403 } 1404 *cp = savec; 1405 if (savec != '\0') { 1406 cp++; 1407 } 1408 while (*cp && isspace ((unsigned char)*cp)) { 1409 cp++; 1410 } 1411 line = cp; 1412 } 1413 if (paths) { 1414 Lst_Destroy(paths, NOFREE); 1415 } 1416 if (specType == ExPath) 1417 Dir_SetPATH(); 1418 } else { 1419 /* 1420 * We don't need ParseDoSpecialSrc unless .WAIT is present. 1421 */ 1422 hasWait = (strstr(line, ".WAIT") != NULL); 1423 1424 while (*line) { 1425 /* 1426 * The targets take real sources, so we must beware of archive 1427 * specifications (i.e. things with left parentheses in them) 1428 * and handle them accordingly. 1429 */ 1430 while (*cp && !isspace ((unsigned char)*cp)) { 1431 if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) { 1432 /* 1433 * Only stop for a left parenthesis if it isn't at the 1434 * start of a word (that'll be for variable changes 1435 * later) and isn't preceded by a dollar sign (a dynamic 1436 * source). 1437 */ 1438 break; 1439 } else { 1440 cp++; 1441 } 1442 } 1443 1444 if (*cp == LPAREN) { 1445 sources = Lst_Init(FALSE); 1446 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) { 1447 Parse_Error(PARSE_FATAL, 1448 "Error in source archive spec \"%s\"", line); 1449 return; 1450 } 1451 1452 while (!Lst_IsEmpty (sources)) { 1453 gn = (GNode *)Lst_DeQueue(sources); 1454 ParseDoSrc(tOp, gn->name, curSrcs, hasWait); 1455 } 1456 Lst_Destroy(sources, NOFREE); 1457 cp = line; 1458 } else { 1459 if (*cp) { 1460 *cp = '\0'; 1461 cp += 1; 1462 } 1463 1464 ParseDoSrc(tOp, line, curSrcs, hasWait); 1465 } 1466 while (*cp && isspace ((unsigned char)*cp)) { 1467 cp++; 1468 } 1469 line = cp; 1470 } 1471 } 1472 1473 if (mainNode == NILGNODE) { 1474 /* 1475 * If we have yet to decide on a main target to make, in the 1476 * absence of any user input, we want the first target on 1477 * the first dependency line that is actually a real target 1478 * (i.e. isn't a .USE or .EXEC rule) to be made. 1479 */ 1480 Lst_ForEach(targets, ParseFindMain, (ClientData)0); 1481 } 1482 1483 /* 1484 * Finally, destroy the list of sources 1485 */ 1486 Lst_Destroy(curSrcs, NOFREE); 1487 } 1488 1489 /*- 1490 *--------------------------------------------------------------------- 1491 * Parse_IsVar -- 1492 * Return TRUE if the passed line is a variable assignment. A variable 1493 * assignment consists of a single word followed by optional whitespace 1494 * followed by either a += or an = operator. 1495 * This function is used both by the Parse_File function and main when 1496 * parsing the command-line arguments. 1497 * 1498 * Input: 1499 * line the line to check 1500 * 1501 * Results: 1502 * TRUE if it is. FALSE if it ain't 1503 * 1504 * Side Effects: 1505 * none 1506 *--------------------------------------------------------------------- 1507 */ 1508 Boolean 1509 Parse_IsVar(char *line) 1510 { 1511 Boolean wasSpace = FALSE; /* set TRUE if found a space */ 1512 Boolean haveName = FALSE; /* Set TRUE if have a variable name */ 1513 int level = 0; 1514 #define ISEQOPERATOR(c) \ 1515 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!')) 1516 1517 /* 1518 * Skip to variable name 1519 */ 1520 for (;(*line == ' ') || (*line == '\t'); line++) 1521 continue; 1522 1523 for (; *line != '=' || level != 0; line++) 1524 switch (*line) { 1525 case '\0': 1526 /* 1527 * end-of-line -- can't be a variable assignment. 1528 */ 1529 return FALSE; 1530 1531 case ' ': 1532 case '\t': 1533 /* 1534 * there can be as much white space as desired so long as there is 1535 * only one word before the operator 1536 */ 1537 wasSpace = TRUE; 1538 break; 1539 1540 case LPAREN: 1541 case '{': 1542 level++; 1543 break; 1544 1545 case '}': 1546 case RPAREN: 1547 level--; 1548 break; 1549 1550 default: 1551 if (wasSpace && haveName) { 1552 if (ISEQOPERATOR(*line)) { 1553 /* 1554 * We must have a finished word 1555 */ 1556 if (level != 0) 1557 return FALSE; 1558 1559 /* 1560 * When an = operator [+?!:] is found, the next 1561 * character must be an = or it ain't a valid 1562 * assignment. 1563 */ 1564 if (line[1] == '=') 1565 return haveName; 1566 #ifdef SUNSHCMD 1567 /* 1568 * This is a shell command 1569 */ 1570 if (strncmp(line, ":sh", 3) == 0) 1571 return haveName; 1572 #endif 1573 } 1574 /* 1575 * This is the start of another word, so not assignment. 1576 */ 1577 return FALSE; 1578 } 1579 else { 1580 haveName = TRUE; 1581 wasSpace = FALSE; 1582 } 1583 break; 1584 } 1585 1586 return haveName; 1587 } 1588 1589 /*- 1590 *--------------------------------------------------------------------- 1591 * Parse_DoVar -- 1592 * Take the variable assignment in the passed line and do it in the 1593 * global context. 1594 * 1595 * Note: There is a lexical ambiguity with assignment modifier characters 1596 * in variable names. This routine interprets the character before the = 1597 * as a modifier. Therefore, an assignment like 1598 * C++=/usr/bin/CC 1599 * is interpreted as "C+ +=" instead of "C++ =". 1600 * 1601 * Input: 1602 * line a line guaranteed to be a variable assignment. 1603 * This reduces error checks 1604 * ctxt Context in which to do the assignment 1605 * 1606 * Results: 1607 * none 1608 * 1609 * Side Effects: 1610 * the variable structure of the given variable name is altered in the 1611 * global context. 1612 *--------------------------------------------------------------------- 1613 */ 1614 void 1615 Parse_DoVar(char *line, GNode *ctxt) 1616 { 1617 char *cp; /* pointer into line */ 1618 enum { 1619 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL 1620 } type; /* Type of assignment */ 1621 char *opc; /* ptr to operator character to 1622 * null-terminate the variable name */ 1623 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed, 1624 * i.e. if any variable expansion was 1625 * performed */ 1626 /* 1627 * Avoid clobbered variable warnings by forcing the compiler 1628 * to ``unregister'' variables 1629 */ 1630 #if __GNUC__ 1631 (void) &cp; 1632 (void) &line; 1633 #endif 1634 1635 /* 1636 * Skip to variable name 1637 */ 1638 while ((*line == ' ') || (*line == '\t')) { 1639 line++; 1640 } 1641 1642 /* 1643 * Skip to operator character, nulling out whitespace as we go 1644 */ 1645 for (cp = line + 1; *cp != '='; cp++) { 1646 if (isspace ((unsigned char)*cp)) { 1647 *cp = '\0'; 1648 } 1649 } 1650 opc = cp-1; /* operator is the previous character */ 1651 *cp++ = '\0'; /* nuke the = */ 1652 1653 /* 1654 * Check operator type 1655 */ 1656 switch (*opc) { 1657 case '+': 1658 type = VAR_APPEND; 1659 *opc = '\0'; 1660 break; 1661 1662 case '?': 1663 /* 1664 * If the variable already has a value, we don't do anything. 1665 */ 1666 *opc = '\0'; 1667 if (Var_Exists(line, ctxt)) { 1668 return; 1669 } else { 1670 type = VAR_NORMAL; 1671 } 1672 break; 1673 1674 case ':': 1675 type = VAR_SUBST; 1676 *opc = '\0'; 1677 break; 1678 1679 case '!': 1680 type = VAR_SHELL; 1681 *opc = '\0'; 1682 break; 1683 1684 default: 1685 #ifdef SUNSHCMD 1686 while (opc > line && *opc != ':') 1687 opc--; 1688 1689 if (strncmp(opc, ":sh", 3) == 0) { 1690 type = VAR_SHELL; 1691 *opc = '\0'; 1692 break; 1693 } 1694 #endif 1695 type = VAR_NORMAL; 1696 break; 1697 } 1698 1699 while (isspace ((unsigned char)*cp)) { 1700 cp++; 1701 } 1702 1703 if (type == VAR_APPEND) { 1704 Var_Append(line, cp, ctxt); 1705 } else if (type == VAR_SUBST) { 1706 /* 1707 * Allow variables in the old value to be undefined, but leave their 1708 * invocation alone -- this is done by forcing oldVars to be false. 1709 * XXX: This can cause recursive variables, but that's not hard to do, 1710 * and this allows someone to do something like 1711 * 1712 * CFLAGS = $(.INCLUDES) 1713 * CFLAGS := -I.. $(CFLAGS) 1714 * 1715 * And not get an error. 1716 */ 1717 Boolean oldOldVars = oldVars; 1718 1719 oldVars = FALSE; 1720 1721 /* 1722 * make sure that we set the variable the first time to nothing 1723 * so that it gets substituted! 1724 */ 1725 if (!Var_Exists(line, ctxt)) 1726 Var_Set(line, "", ctxt, 0); 1727 1728 cp = Var_Subst(NULL, cp, ctxt, FALSE); 1729 oldVars = oldOldVars; 1730 freeCp = TRUE; 1731 1732 Var_Set(line, cp, ctxt, 0); 1733 } else if (type == VAR_SHELL) { 1734 char *res; 1735 const char *err; 1736 1737 if (strchr(cp, '$') != NULL) { 1738 /* 1739 * There's a dollar sign in the command, so perform variable 1740 * expansion on the whole thing. The resulting string will need 1741 * freeing when we're done, so set freeCmd to TRUE. 1742 */ 1743 cp = Var_Subst(NULL, cp, VAR_CMD, TRUE); 1744 freeCp = TRUE; 1745 } 1746 1747 res = Cmd_Exec(cp, &err); 1748 Var_Set(line, res, ctxt, 0); 1749 free(res); 1750 1751 if (err) 1752 Parse_Error(PARSE_WARNING, err, cp); 1753 } else { 1754 /* 1755 * Normal assignment -- just do it. 1756 */ 1757 Var_Set(line, cp, ctxt, 0); 1758 } 1759 if (strcmp(line, MAKEOVERRIDES) == 0) 1760 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */ 1761 else if (strcmp(line, ".CURDIR") == 0) { 1762 /* 1763 * Somone is being (too?) clever... 1764 * Let's pretend they know what they are doing and 1765 * re-initialize the 'cur' Path. 1766 */ 1767 Dir_InitCur(cp); 1768 Dir_SetPATH(); 1769 } 1770 if (freeCp) 1771 free(cp); 1772 } 1773 1774 1775 /*- 1776 * ParseAddCmd -- 1777 * Lst_ForEach function to add a command line to all targets 1778 * 1779 * Input: 1780 * gnp the node to which the command is to be added 1781 * cmd the command to add 1782 * 1783 * Results: 1784 * Always 0 1785 * 1786 * Side Effects: 1787 * A new element is added to the commands list of the node. 1788 */ 1789 static int 1790 ParseAddCmd(ClientData gnp, ClientData cmd) 1791 { 1792 GNode *gn = (GNode *)gnp; 1793 /* if target already supplied, ignore commands */ 1794 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) 1795 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts)); 1796 if (!(gn->type & OP_HAS_COMMANDS)) { 1797 (void)Lst_AtEnd(gn->commands, cmd); 1798 ParseMark(gn); 1799 } else { 1800 #ifdef notyet 1801 /* XXX: We cannot do this until we fix the tree */ 1802 (void)Lst_AtEnd(gn->commands, cmd); 1803 Parse_Error(PARSE_WARNING, 1804 "overriding commands for target \"%s\"; " 1805 "previous commands defined at %s: %d ignored", 1806 gn->name, gn->fname, gn->lineno); 1807 #else 1808 Parse_Error(PARSE_WARNING, 1809 "duplicate script for target \"%s\" ignored", 1810 gn->name); 1811 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING, 1812 "using previous script for \"%s\" defined here", 1813 gn->name); 1814 #endif 1815 } 1816 return(0); 1817 } 1818 1819 /*- 1820 *----------------------------------------------------------------------- 1821 * ParseHasCommands -- 1822 * Callback procedure for Parse_File when destroying the list of 1823 * targets on the last dependency line. Marks a target as already 1824 * having commands if it does, to keep from having shell commands 1825 * on multiple dependency lines. 1826 * 1827 * Input: 1828 * gnp Node to examine 1829 * 1830 * Results: 1831 * None 1832 * 1833 * Side Effects: 1834 * OP_HAS_COMMANDS may be set for the target. 1835 * 1836 *----------------------------------------------------------------------- 1837 */ 1838 static void 1839 ParseHasCommands(ClientData gnp) 1840 { 1841 GNode *gn = (GNode *)gnp; 1842 if (!Lst_IsEmpty(gn->commands)) { 1843 gn->type |= OP_HAS_COMMANDS; 1844 } 1845 } 1846 1847 /*- 1848 *----------------------------------------------------------------------- 1849 * Parse_AddIncludeDir -- 1850 * Add a directory to the path searched for included makefiles 1851 * bracketed by double-quotes. Used by functions in main.c 1852 * 1853 * Input: 1854 * dir The name of the directory to add 1855 * 1856 * Results: 1857 * None. 1858 * 1859 * Side Effects: 1860 * The directory is appended to the list. 1861 * 1862 *----------------------------------------------------------------------- 1863 */ 1864 void 1865 Parse_AddIncludeDir(char *dir) 1866 { 1867 (void)Dir_AddDir(parseIncPath, dir); 1868 } 1869 1870 /*- 1871 *--------------------------------------------------------------------- 1872 * ParseDoInclude -- 1873 * Push to another file. 1874 * 1875 * The input is the line minus the `.'. A file spec is a string 1876 * enclosed in <> or "". The former is looked for only in sysIncPath. 1877 * The latter in . and the directories specified by -I command line 1878 * options 1879 * 1880 * Results: 1881 * None 1882 * 1883 * Side Effects: 1884 * A structure is added to the includes Lst and readProc, lineno, 1885 * fname and curFILE are altered for the new file 1886 *--------------------------------------------------------------------- 1887 */ 1888 static void 1889 ParseDoInclude(char *line) 1890 { 1891 char *fullname; /* full pathname of file */ 1892 IFile *oldFile; /* state associated with current file */ 1893 char endc; /* the character which ends the file spec */ 1894 char *cp; /* current position in file spec */ 1895 Boolean isSystem; /* TRUE if makefile is a system makefile */ 1896 int silent = (*line != 'i') ? 1 : 0; 1897 char *file = &line[7 + silent]; 1898 1899 /* 1900 * Skip to delimiter character so we know where to look 1901 */ 1902 while ((*file == ' ') || (*file == '\t')) { 1903 file++; 1904 } 1905 1906 if ((*file != '"') && (*file != '<')) { 1907 Parse_Error(PARSE_FATAL, 1908 ".include filename must be delimited by '\"' or '<'"); 1909 return; 1910 } 1911 1912 /* 1913 * Set the search path on which to find the include file based on the 1914 * characters which bracket its name. Angle-brackets imply it's 1915 * a system Makefile while double-quotes imply it's a user makefile 1916 */ 1917 if (*file == '<') { 1918 isSystem = TRUE; 1919 endc = '>'; 1920 } else { 1921 isSystem = FALSE; 1922 endc = '"'; 1923 } 1924 1925 /* 1926 * Skip to matching delimiter 1927 */ 1928 for (cp = ++file; *cp && *cp != endc; cp++) { 1929 continue; 1930 } 1931 1932 if (*cp != endc) { 1933 Parse_Error(PARSE_FATAL, 1934 "Unclosed %cinclude filename. '%c' expected", 1935 '.', endc); 1936 return; 1937 } 1938 *cp = '\0'; 1939 1940 /* 1941 * Substitute for any variables in the file name before trying to 1942 * find the thing. 1943 */ 1944 file = Var_Subst(NULL, file, VAR_CMD, FALSE); 1945 1946 /* 1947 * Now we know the file's name and its search path, we attempt to 1948 * find the durn thing. A return of NULL indicates the file don't 1949 * exist. 1950 */ 1951 fullname = NULL; 1952 1953 if (!isSystem) { 1954 /* 1955 * Include files contained in double-quotes are first searched for 1956 * relative to the including file's location. We don't want to 1957 * cd there, of course, so we just tack on the old file's 1958 * leading path components and call Dir_FindFile to see if 1959 * we can locate the beast. 1960 */ 1961 char *prefEnd, *Fname; 1962 1963 /* Make a temporary copy of this, to be safe. */ 1964 Fname = estrdup(curFile.fname); 1965 1966 prefEnd = strrchr(Fname, '/'); 1967 if (prefEnd != NULL) { 1968 char *newName; 1969 1970 *prefEnd = '\0'; 1971 if (file[0] == '/') 1972 newName = estrdup(file); 1973 else 1974 newName = str_concat(Fname, file, STR_ADDSLASH); 1975 fullname = Dir_FindFile(newName, parseIncPath); 1976 if (fullname == NULL) { 1977 fullname = Dir_FindFile(newName, dirSearchPath); 1978 } 1979 free(newName); 1980 *prefEnd = '/'; 1981 } else { 1982 fullname = NULL; 1983 } 1984 free(Fname); 1985 if (fullname == NULL) { 1986 /* 1987 * Makefile wasn't found in same directory as included makefile. 1988 * Search for it first on the -I search path, 1989 * then on the .PATH search path, if not found in a -I directory. 1990 * XXX: Suffix specific? 1991 */ 1992 fullname = Dir_FindFile(file, parseIncPath); 1993 if (fullname == NULL) { 1994 fullname = Dir_FindFile(file, dirSearchPath); 1995 } 1996 } 1997 } 1998 1999 /* Looking for a system file or file still not found */ 2000 if (fullname == NULL) { 2001 /* 2002 * Look for it on the system path 2003 */ 2004 fullname = Dir_FindFile(file, Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2005 } 2006 2007 if (fullname == NULL) { 2008 *cp = endc; 2009 if (!silent) 2010 Parse_Error(PARSE_FATAL, "Could not find %s", file); 2011 return; 2012 } 2013 2014 free(file); 2015 2016 /* 2017 * Once we find the absolute path to the file, we get to save all the 2018 * state from the current file before we can start reading this 2019 * include file. The state is stored in an IFile structure which 2020 * is placed on a list with other IFile structures. The list makes 2021 * a very nice stack to track how we got here... 2022 */ 2023 oldFile = emalloc(sizeof(IFile)); 2024 2025 memcpy(oldFile, &curFile, sizeof(IFile)); 2026 2027 (void)Lst_AtFront(includes, (ClientData)oldFile); 2028 2029 /* 2030 * Once the previous state has been saved, we can get down to reading 2031 * the new file. We set up the name of the file to be the absolute 2032 * name of the include file so error messages refer to the right 2033 * place. Naturally enough, we start reading at line number 0. 2034 */ 2035 curFile.fname = fullname; 2036 curFile.lineno = 0; 2037 2038 ParseSetParseFile(curFile.fname); 2039 2040 curFile.F = fopen(fullname, "r"); 2041 curFile.P = NULL; 2042 2043 if (curFile.F == (FILE * ) NULL) { 2044 if (!silent) 2045 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname); 2046 /* 2047 * Pop to previous file 2048 */ 2049 (void)ParseEOF(0); 2050 } 2051 } 2052 2053 2054 /*- 2055 *--------------------------------------------------------------------- 2056 * ParseSetParseFile -- 2057 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and 2058 * basename of the given filename 2059 * 2060 * Results: 2061 * None 2062 * 2063 * Side Effects: 2064 * The .PARSEDIR and .PARSEFILE variables are overwritten by the 2065 * dirname and basename of the given filename. 2066 *--------------------------------------------------------------------- 2067 */ 2068 static void 2069 ParseSetParseFile(char *filename) 2070 { 2071 char *slash; 2072 2073 slash = strrchr(filename, '/'); 2074 if (slash == 0) { 2075 Var_Set(".PARSEDIR", ".", VAR_GLOBAL, 0); 2076 Var_Set(".PARSEFILE", filename, VAR_GLOBAL, 0); 2077 } else { 2078 *slash = '\0'; 2079 Var_Set(".PARSEDIR", filename, VAR_GLOBAL, 0); 2080 Var_Set(".PARSEFILE", slash+1, VAR_GLOBAL, 0); 2081 *slash = '/'; 2082 } 2083 } 2084 2085 2086 /*- 2087 *--------------------------------------------------------------------- 2088 * Parse_FromString -- 2089 * Start Parsing from the given string 2090 * 2091 * Results: 2092 * None 2093 * 2094 * Side Effects: 2095 * A structure is added to the includes Lst and readProc, lineno, 2096 * fname and curFILE are altered for the new file 2097 *--------------------------------------------------------------------- 2098 */ 2099 void 2100 Parse_FromString(char *str, int lineno) 2101 { 2102 IFile *oldFile; /* state associated with this file */ 2103 2104 if (DEBUG(FOR)) 2105 (void)fprintf(stderr, "%s\n---- at line %d\n", str, lineno); 2106 2107 oldFile = emalloc(sizeof(IFile)); 2108 memcpy(oldFile, &curFile, sizeof(IFile)); 2109 2110 (void)Lst_AtFront(includes, (ClientData)oldFile); 2111 2112 curFile.F = NULL; 2113 curFile.P = emalloc(sizeof(PTR)); 2114 curFile.P->str = curFile.P->ptr = str; 2115 curFile.lineno = lineno; 2116 curFile.fname = estrdup(curFile.fname); 2117 } 2118 2119 2120 #ifdef SYSVINCLUDE 2121 /*- 2122 *--------------------------------------------------------------------- 2123 * ParseTraditionalInclude -- 2124 * Push to another file. 2125 * 2126 * The input is the current line. The file name(s) are 2127 * following the "include". 2128 * 2129 * Results: 2130 * None 2131 * 2132 * Side Effects: 2133 * A structure is added to the includes Lst and readProc, lineno, 2134 * fname and curFILE are altered for the new file 2135 *--------------------------------------------------------------------- 2136 */ 2137 static void 2138 ParseTraditionalInclude(char *line) 2139 { 2140 char *fullname; /* full pathname of file */ 2141 IFile *oldFile; /* state associated with current file */ 2142 char *cp; /* current position in file spec */ 2143 char *prefEnd; 2144 int done = 0; 2145 int silent = (line[0] != 'i') ? 1 : 0; 2146 char *file = &line[silent + 7]; 2147 char *cfname; 2148 size_t clineno; 2149 2150 cfname = curFile.fname; 2151 clineno = curFile.lineno; 2152 2153 if (DEBUG(PARSE)) { 2154 printf("ParseTraditionalInclude: %s\n", file); 2155 } 2156 2157 /* 2158 * Skip over whitespace 2159 */ 2160 while (isspace((unsigned char)*file)) 2161 file++; 2162 2163 /* 2164 * Substitute for any variables in the file name before trying to 2165 * find the thing. 2166 */ 2167 file = Var_Subst(NULL, file, VAR_CMD, FALSE); 2168 2169 if (*file == '\0') { 2170 Parse_Error(PARSE_FATAL, 2171 "Filename missing from \"include\""); 2172 return; 2173 } 2174 2175 for (; !done; file = cp + 1) { 2176 /* 2177 * Skip to end of line or next whitespace 2178 */ 2179 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++) 2180 continue; 2181 2182 if (*cp) 2183 *cp = '\0'; 2184 else 2185 done = 1; 2186 2187 /* 2188 * Now we know the file's name, we attempt to find the durn thing. 2189 * A return of NULL indicates the file don't exist. 2190 * 2191 * Include files are first searched for relative to the including 2192 * file's location. We don't want to cd there, of course, so we 2193 * just tack on the old file's leading path components and call 2194 * Dir_FindFile to see if we can locate the beast. 2195 * XXX - this *does* search in the current directory, right? 2196 */ 2197 2198 prefEnd = strrchr(cfname, '/'); 2199 if (prefEnd != NULL) { 2200 char *newName; 2201 2202 *prefEnd = '\0'; 2203 newName = str_concat(cfname, file, STR_ADDSLASH); 2204 fullname = Dir_FindFile(newName, parseIncPath); 2205 if (fullname == NULL) { 2206 fullname = Dir_FindFile(newName, dirSearchPath); 2207 } 2208 free(newName); 2209 *prefEnd = '/'; 2210 } else { 2211 fullname = NULL; 2212 } 2213 2214 if (fullname == NULL) { 2215 /* 2216 * System makefile or makefile wasn't found in same directory as 2217 * included makefile. Search for it first on the -I search path, 2218 * then on the .PATH search path, if not found in a 2219 * -I directory. XXX: Suffix specific? 2220 */ 2221 fullname = Dir_FindFile(file, parseIncPath); 2222 if (fullname == NULL) { 2223 fullname = Dir_FindFile(file, dirSearchPath); 2224 } 2225 } 2226 2227 if (fullname == NULL) { 2228 /* 2229 * Still haven't found the makefile. Look for it on the system 2230 * path as a last resort. 2231 */ 2232 fullname = Dir_FindFile(file, 2233 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 2234 } 2235 2236 if (fullname == NULL) { 2237 if (!silent) 2238 ParseErrorInternal(cfname, clineno, PARSE_FATAL, 2239 "Could not find %s", file); 2240 free(file); 2241 continue; 2242 } 2243 2244 free(file); 2245 2246 /* 2247 * Once we find the absolute path to the file, we get to save all 2248 * the state from the current file before we can start reading this 2249 * include file. The state is stored in an IFile structure which 2250 * is placed on a list with other IFile structures. The list makes 2251 * a very nice stack to track how we got here... 2252 */ 2253 oldFile = emalloc(sizeof(IFile)); 2254 memcpy(oldFile, &curFile, sizeof(IFile)); 2255 2256 (void)Lst_AtFront(includes, (ClientData)oldFile); 2257 2258 /* 2259 * Once the previous state has been saved, we can get down to 2260 * reading the new file. We set up the name of the file to be the 2261 * absolute name of the include file so error messages refer to the 2262 * right place. Naturally enough, we start reading at line number 0. 2263 */ 2264 curFile.fname = fullname; 2265 curFile.lineno = 0; 2266 2267 curFile.F = fopen(fullname, "r"); 2268 curFile.P = NULL; 2269 2270 if (curFile.F == NULL) { 2271 if (!silent) 2272 ParseErrorInternal(cfname, clineno, PARSE_FATAL, 2273 "Cannot open %s", fullname); 2274 /* 2275 * Pop to previous file 2276 */ 2277 (void)ParseEOF(1); 2278 } 2279 } 2280 } 2281 #endif 2282 2283 /*- 2284 *--------------------------------------------------------------------- 2285 * ParseEOF -- 2286 * Called when EOF is reached in the current file. If we were reading 2287 * an include file, the includes stack is popped and things set up 2288 * to go back to reading the previous file at the previous location. 2289 * 2290 * Results: 2291 * CONTINUE if there's more to do. DONE if not. 2292 * 2293 * Side Effects: 2294 * The old curFILE, is closed. The includes list is shortened. 2295 * lineno, curFILE, and fname are changed if CONTINUE is returned. 2296 *--------------------------------------------------------------------- 2297 */ 2298 static int 2299 ParseEOF(int opened) 2300 { 2301 IFile *ifile; /* the state on the top of the includes stack */ 2302 2303 if (Lst_IsEmpty(includes)) { 2304 Var_Delete(".PARSEDIR", VAR_GLOBAL); 2305 Var_Delete(".PARSEFILE", VAR_GLOBAL); 2306 return (DONE); 2307 } 2308 2309 ifile = (IFile *)Lst_DeQueue(includes); 2310 2311 /* XXX dispose of curFile info */ 2312 free( curFile.fname); 2313 if (opened && curFile.F) 2314 (void)fclose(curFile.F); 2315 if (curFile.P) { 2316 free(curFile.P->str); 2317 free(curFile.P); 2318 } 2319 2320 memcpy(&curFile, ifile, sizeof(IFile)); 2321 2322 free(ifile); 2323 2324 /* pop the PARSEDIR/PARSEFILE variables */ 2325 ParseSetParseFile(curFile.fname); 2326 return (CONTINUE); 2327 } 2328 2329 /*- 2330 *--------------------------------------------------------------------- 2331 * ParseReadc -- 2332 * Read a character from the current file 2333 * 2334 * Results: 2335 * The character that was read 2336 * 2337 * Side Effects: 2338 *--------------------------------------------------------------------- 2339 */ 2340 static inline int 2341 ParseReadc(void) 2342 { 2343 if (curFile.F) 2344 return fgetc(curFile.F); 2345 2346 if (curFile.P && *curFile.P->ptr) 2347 return *curFile.P->ptr++; 2348 return EOF; 2349 } 2350 2351 2352 /*- 2353 *--------------------------------------------------------------------- 2354 * ParseUnreadc -- 2355 * Put back a character to the current file 2356 * 2357 * Results: 2358 * None. 2359 * 2360 * Side Effects: 2361 *--------------------------------------------------------------------- 2362 */ 2363 static void 2364 ParseUnreadc(int c) 2365 { 2366 if (curFile.F) { 2367 ungetc(c, curFile.F); 2368 return; 2369 } 2370 if (curFile.P) { 2371 *--(curFile.P->ptr) = c; 2372 return; 2373 } 2374 } 2375 2376 2377 /* ParseSkipLine(): 2378 * Grab the next line 2379 * 2380 * Input: 2381 * skip Skip lines that don't start with . 2382 * keep_newline Keep newline character as is. 2383 * 2384 */ 2385 static char * 2386 ParseSkipLine(int skip, int keep_newline) 2387 { 2388 char *line; 2389 int c, lastc, lineLength = 0; 2390 Buffer buf; 2391 2392 buf = Buf_Init(MAKE_BSIZE); 2393 2394 do { 2395 Buf_Discard(buf, lineLength); 2396 lastc = '\0'; 2397 2398 while (((c = ParseReadc()) != '\n' || lastc == '\\') 2399 && c != EOF) { 2400 if (c == '\n') { 2401 if (keep_newline) 2402 Buf_AddByte(buf, (Byte)c); 2403 else 2404 Buf_ReplaceLastByte(buf, (Byte)' '); 2405 curFile.lineno++; 2406 2407 while ((c = ParseReadc()) == ' ' || c == '\t'); 2408 2409 if (c == EOF) 2410 break; 2411 } 2412 2413 Buf_AddByte(buf, (Byte)c); 2414 lastc = c; 2415 } 2416 2417 if (c == EOF) { 2418 Parse_Error(PARSE_FATAL, "Unclosed conditional/for loop"); 2419 Buf_Destroy(buf, TRUE); 2420 return(NULL); 2421 } 2422 2423 curFile.lineno++; 2424 Buf_AddByte(buf, (Byte)'\0'); 2425 line = (char *)Buf_GetAll(buf, &lineLength); 2426 } while (skip == 1 && line[0] != '.'); 2427 2428 Buf_Destroy(buf, FALSE); 2429 return line; 2430 } 2431 2432 2433 /*- 2434 *--------------------------------------------------------------------- 2435 * ParseReadLine -- 2436 * Read an entire line from the input file. Called only by Parse_File. 2437 * To facilitate escaped newlines and what have you, a character is 2438 * buffered in 'lastc', which is '\0' when no characters have been 2439 * read. When we break out of the loop, c holds the terminating 2440 * character and lastc holds a character that should be added to 2441 * the line (unless we don't read anything but a terminator). 2442 * 2443 * Results: 2444 * A line w/o its newline 2445 * 2446 * Side Effects: 2447 * Only those associated with reading a character 2448 *--------------------------------------------------------------------- 2449 */ 2450 static char * 2451 ParseReadLine(void) 2452 { 2453 Buffer buf; /* Buffer for current line */ 2454 int c; /* the current character */ 2455 int lastc; /* The most-recent character */ 2456 Boolean semiNL; /* treat semi-colons as newlines */ 2457 Boolean ignDepOp; /* TRUE if should ignore dependency operators 2458 * for the purposes of setting semiNL */ 2459 Boolean ignComment; /* TRUE if should ignore comments (in a 2460 * shell command */ 2461 char *line; /* Result */ 2462 char *ep; /* to strip trailing blanks */ 2463 int lineLength; /* Length of result */ 2464 int lineno; /* Saved line # */ 2465 2466 semiNL = FALSE; 2467 ignDepOp = FALSE; 2468 ignComment = FALSE; 2469 2470 /* 2471 * Handle special-characters at the beginning of the line. Either a 2472 * leading tab (shell command) or pound-sign (possible conditional) 2473 * forces us to ignore comments and dependency operators and treat 2474 * semi-colons as semi-colons (by leaving semiNL FALSE). This also 2475 * discards completely blank lines. 2476 */ 2477 for (;;) { 2478 c = ParseReadc(); 2479 2480 if (c == '\t') { 2481 ignComment = ignDepOp = TRUE; 2482 break; 2483 } else if (c == '\n') { 2484 curFile.lineno++; 2485 } else if (c == '#') { 2486 ParseUnreadc(c); 2487 break; 2488 } else { 2489 /* 2490 * Anything else breaks out without doing anything 2491 */ 2492 break; 2493 } 2494 } 2495 2496 if (c != EOF) { 2497 lastc = c; 2498 buf = Buf_Init(MAKE_BSIZE); 2499 2500 while (((c = ParseReadc()) != '\n' || (lastc == '\\')) && 2501 (c != EOF)) 2502 { 2503 test_char: 2504 switch(c) { 2505 case '\n': 2506 /* 2507 * Escaped newline: read characters until a non-space or an 2508 * unescaped newline and replace them all by a single space. 2509 * This is done by storing the space over the backslash and 2510 * dropping through with the next nonspace. If it is a 2511 * semi-colon and semiNL is TRUE, it will be recognized as a 2512 * newline in the code below this... 2513 */ 2514 curFile.lineno++; 2515 lastc = ' '; 2516 while ((c = ParseReadc()) == ' ' || c == '\t') { 2517 continue; 2518 } 2519 if (c == EOF || c == '\n') { 2520 goto line_read; 2521 } else { 2522 /* 2523 * Check for comments, semiNL's, etc. -- easier than 2524 * ParseUnreadc(c); continue; 2525 */ 2526 goto test_char; 2527 } 2528 /*NOTREACHED*/ 2529 break; 2530 2531 case ';': 2532 /* 2533 * Semi-colon: Need to see if it should be interpreted as a 2534 * newline 2535 */ 2536 if (semiNL) { 2537 /* 2538 * To make sure the command that may be following this 2539 * semi-colon begins with a tab, we push one back into the 2540 * input stream. This will overwrite the semi-colon in the 2541 * buffer. If there is no command following, this does no 2542 * harm, since the newline remains in the buffer and the 2543 * whole line is ignored. 2544 */ 2545 ParseUnreadc('\t'); 2546 goto line_read; 2547 } 2548 break; 2549 case '=': 2550 if (!semiNL) { 2551 /* 2552 * Haven't seen a dependency operator before this, so this 2553 * must be a variable assignment -- don't pay attention to 2554 * dependency operators after this. 2555 */ 2556 ignDepOp = TRUE; 2557 } else if (lastc == ':' || lastc == '!') { 2558 /* 2559 * Well, we've seen a dependency operator already, but it 2560 * was the previous character, so this is really just an 2561 * expanded variable assignment. Revert semi-colons to 2562 * being just semi-colons again and ignore any more 2563 * dependency operators. 2564 * 2565 * XXX: Note that a line like "foo : a:=b" will blow up, 2566 * but who'd write a line like that anyway? 2567 */ 2568 ignDepOp = TRUE; semiNL = FALSE; 2569 } 2570 break; 2571 case '#': 2572 if (!ignComment) { 2573 if ( 2574 #if 0 2575 compatMake && 2576 #endif 2577 (lastc != '\\')) { 2578 /* 2579 * If the character is a hash mark and it isn't escaped 2580 * (or we're being compatible), the thing is a comment. 2581 * Skip to the end of the line. 2582 */ 2583 do { 2584 c = ParseReadc(); 2585 /* 2586 * If we found a backslash not escaped 2587 * itself it means that the comment is 2588 * going to continue in the next line. 2589 */ 2590 if (c == '\\') 2591 ParseReadc(); 2592 } while ((c != '\n') && (c != EOF)); 2593 goto line_read; 2594 } else { 2595 /* 2596 * Don't add the backslash. Just let the # get copied 2597 * over. 2598 */ 2599 lastc = c; 2600 continue; 2601 } 2602 } 2603 break; 2604 case ':': 2605 case '!': 2606 if (!ignDepOp && (c == ':' || c == '!')) { 2607 /* 2608 * A semi-colon is recognized as a newline only on 2609 * dependency lines. Dependency lines are lines with a 2610 * colon or an exclamation point. Ergo... 2611 */ 2612 semiNL = TRUE; 2613 } 2614 break; 2615 } 2616 /* 2617 * Copy in the previous character and save this one in lastc. 2618 */ 2619 Buf_AddByte(buf, (Byte)lastc); 2620 lastc = c; 2621 2622 } 2623 line_read: 2624 curFile.lineno++; 2625 2626 if (lastc != '\0') { 2627 Buf_AddByte(buf, (Byte)lastc); 2628 } 2629 Buf_AddByte(buf, (Byte)'\0'); 2630 line = (char *)Buf_GetAll(buf, &lineLength); 2631 Buf_Destroy(buf, FALSE); 2632 2633 /* 2634 * Strip trailing blanks and tabs from the line. 2635 * Do not strip a blank or tab that is preceded by 2636 * a '\' 2637 */ 2638 ep = line; 2639 while (*ep) 2640 ++ep; 2641 while (ep > line + 1 && (ep[-1] == ' ' || ep[-1] == '\t')) { 2642 if (ep > line + 1 && ep[-2] == '\\') 2643 break; 2644 --ep; 2645 } 2646 *ep = 0; 2647 2648 if (line[0] == '.') { 2649 /* 2650 * The line might be a conditional. Ask the conditional module 2651 * about it and act accordingly 2652 */ 2653 switch (Cond_Eval(line)) { 2654 case COND_SKIP: 2655 /* 2656 * Skip to next conditional that evaluates to COND_PARSE. 2657 */ 2658 do { 2659 free(line); 2660 line = ParseSkipLine(1, 0); 2661 } while (line && Cond_Eval(line) != COND_PARSE); 2662 if (line == NULL) 2663 break; 2664 /*FALLTHRU*/ 2665 case COND_PARSE: 2666 free(line); 2667 line = ParseReadLine(); 2668 break; 2669 case COND_INVALID: 2670 lineno = curFile.lineno; 2671 if (For_Eval(line)) { 2672 int ok; 2673 free(line); 2674 do { 2675 /* 2676 * Skip after the matching end 2677 */ 2678 line = ParseSkipLine(0, 1); 2679 if (line == NULL) { 2680 Parse_Error(PARSE_FATAL, 2681 "Unexpected end of file in for loop.\n"); 2682 break; 2683 } 2684 ok = For_Eval(line); 2685 free(line); 2686 } 2687 while (ok); 2688 if (line != NULL) 2689 For_Run(lineno); 2690 line = ParseReadLine(); 2691 } 2692 break; 2693 } 2694 } 2695 return (line); 2696 2697 } else { 2698 /* 2699 * Hit end-of-file, so return a NULL line to indicate this. 2700 */ 2701 return(NULL); 2702 } 2703 } 2704 2705 /*- 2706 *----------------------------------------------------------------------- 2707 * ParseFinishLine -- 2708 * Handle the end of a dependency group. 2709 * 2710 * Results: 2711 * Nothing. 2712 * 2713 * Side Effects: 2714 * inLine set FALSE. 'targets' list destroyed. 2715 * 2716 *----------------------------------------------------------------------- 2717 */ 2718 static void 2719 ParseFinishLine(void) 2720 { 2721 if (inLine) { 2722 Lst_ForEach(targets, Suff_EndTransform, (ClientData)NULL); 2723 Lst_Destroy(targets, ParseHasCommands); 2724 targets = NULL; 2725 inLine = FALSE; 2726 } 2727 } 2728 2729 2730 /*- 2731 *--------------------------------------------------------------------- 2732 * Parse_File -- 2733 * Parse a file into its component parts, incorporating it into the 2734 * current dependency graph. This is the main function and controls 2735 * almost every other function in this module 2736 * 2737 * Input: 2738 * name the name of the file being read 2739 * stream Stream open to makefile to parse 2740 * 2741 * Results: 2742 * None 2743 * 2744 * Side Effects: 2745 * Loads. Nodes are added to the list of all targets, nodes and links 2746 * are added to the dependency graph. etc. etc. etc. 2747 *--------------------------------------------------------------------- 2748 */ 2749 void 2750 Parse_File(const char *name, FILE *stream) 2751 { 2752 char *cp, /* pointer into the line */ 2753 *line; /* the line we're working on */ 2754 2755 inLine = FALSE; 2756 fatals = 0; 2757 2758 curFile.fname = UNCONST(name); 2759 curFile.F = stream; 2760 curFile.lineno = 0; 2761 2762 ParseSetParseFile(curFile.fname); 2763 2764 do { 2765 while ((line = ParseReadLine()) != NULL) { 2766 if (*line == '.') { 2767 /* 2768 * Lines that begin with the special character are either 2769 * include or undef directives. 2770 */ 2771 for (cp = line + 1; isspace ((unsigned char)*cp); cp++) { 2772 continue; 2773 } 2774 if (strncmp(cp, "include", 7) == 0 || 2775 ((cp[0] == 's' || cp[0] == '-') && 2776 strncmp(&cp[1], "include", 7) == 0)) { 2777 ParseDoInclude(cp); 2778 goto nextLine; 2779 } else if (strncmp(cp, "undef", 5) == 0) { 2780 char *cp2; 2781 for (cp += 5; isspace((unsigned char) *cp); cp++) { 2782 continue; 2783 } 2784 2785 for (cp2 = cp; !isspace((unsigned char) *cp2) && 2786 (*cp2 != '\0'); cp2++) { 2787 continue; 2788 } 2789 2790 *cp2 = '\0'; 2791 2792 Var_Delete(cp, VAR_GLOBAL); 2793 goto nextLine; 2794 } 2795 } 2796 if (*line == '#') { 2797 /* If we're this far, the line must be a comment. */ 2798 goto nextLine; 2799 } 2800 2801 if (*line == '\t') { 2802 /* 2803 * If a line starts with a tab, it can only hope to be 2804 * a creation command. 2805 */ 2806 #ifndef POSIX 2807 shellCommand: 2808 #endif 2809 for (cp = line + 1; isspace ((unsigned char)*cp); cp++) { 2810 continue; 2811 } 2812 if (*cp) { 2813 if (inLine) { 2814 /* 2815 * So long as it's not a blank line and we're actually 2816 * in a dependency spec, add the command to the list of 2817 * commands of all targets in the dependency spec 2818 */ 2819 Lst_ForEach(targets, ParseAddCmd, cp); 2820 #ifdef CLEANUP 2821 Lst_AtEnd(targCmds, (ClientData) line); 2822 #endif 2823 continue; 2824 } else { 2825 Parse_Error(PARSE_FATAL, 2826 "Unassociated shell command \"%s\"", 2827 cp); 2828 } 2829 } 2830 #ifdef SYSVINCLUDE 2831 } else if (((strncmp(line, "include", 7) == 0 && 2832 isspace((unsigned char) line[7])) || 2833 ((line[0] == 's' || line[0] == '-') && 2834 strncmp(&line[1], "include", 7) == 0 && 2835 isspace((unsigned char) line[8]))) && 2836 strchr(line, ':') == NULL) { 2837 /* 2838 * It's an S3/S5-style "include". 2839 */ 2840 ParseTraditionalInclude(line); 2841 goto nextLine; 2842 #endif 2843 } else if (Parse_IsVar(line)) { 2844 ParseFinishLine(); 2845 Parse_DoVar(line, VAR_GLOBAL); 2846 } else { 2847 /* 2848 * We now know it's a dependency line so it needs to have all 2849 * variables expanded before being parsed. Tell the variable 2850 * module to complain if some variable is undefined... 2851 * To make life easier on novices, if the line is indented we 2852 * first make sure the line has a dependency operator in it. 2853 * If it doesn't have an operator and we're in a dependency 2854 * line's script, we assume it's actually a shell command 2855 * and add it to the current list of targets. 2856 */ 2857 #ifndef POSIX 2858 Boolean nonSpace = FALSE; 2859 #endif 2860 2861 cp = line; 2862 if (isspace((unsigned char) line[0])) { 2863 while ((*cp != '\0') && isspace((unsigned char) *cp)) { 2864 cp++; 2865 } 2866 if (*cp == '\0') { 2867 goto nextLine; 2868 } 2869 #ifndef POSIX 2870 while (*cp && (ParseIsEscaped(line, cp) || 2871 (*cp != ':') && (*cp != '!'))) { 2872 nonSpace = TRUE; 2873 cp++; 2874 } 2875 #endif 2876 } 2877 2878 #ifndef POSIX 2879 if (*cp == '\0') { 2880 if (inLine) { 2881 Parse_Error(PARSE_WARNING, 2882 "Shell command needs a leading tab"); 2883 goto shellCommand; 2884 } else if (nonSpace) { 2885 Parse_Error(PARSE_FATAL, "Missing operator"); 2886 } 2887 } else { 2888 #endif 2889 ParseFinishLine(); 2890 2891 cp = Var_Subst(NULL, line, VAR_CMD, TRUE); 2892 free(line); 2893 line = cp; 2894 2895 /* 2896 * Need a non-circular list for the target nodes 2897 */ 2898 if (targets) 2899 Lst_Destroy(targets, NOFREE); 2900 2901 targets = Lst_Init(FALSE); 2902 inLine = TRUE; 2903 2904 ParseDoDependency(line); 2905 #ifndef POSIX 2906 } 2907 #endif 2908 } 2909 2910 nextLine: 2911 2912 free(line); 2913 } 2914 /* 2915 * Reached EOF, but it may be just EOF of an include file... 2916 */ 2917 } while (ParseEOF(1) == CONTINUE); 2918 2919 /* 2920 * Make sure conditionals are clean 2921 */ 2922 Cond_End(); 2923 2924 if (fatals) { 2925 (void)fprintf(stderr, 2926 "%s: Fatal errors encountered -- cannot continue\n", 2927 progname); 2928 PrintOnError(NULL); 2929 exit(1); 2930 } 2931 } 2932 2933 /*- 2934 *--------------------------------------------------------------------- 2935 * Parse_Init -- 2936 * initialize the parsing module 2937 * 2938 * Results: 2939 * none 2940 * 2941 * Side Effects: 2942 * the parseIncPath list is initialized... 2943 *--------------------------------------------------------------------- 2944 */ 2945 void 2946 Parse_Init(void) 2947 { 2948 mainNode = NILGNODE; 2949 parseIncPath = Lst_Init(FALSE); 2950 sysIncPath = Lst_Init(FALSE); 2951 defIncPath = Lst_Init(FALSE); 2952 includes = Lst_Init(FALSE); 2953 #ifdef CLEANUP 2954 targCmds = Lst_Init(FALSE); 2955 #endif 2956 } 2957 2958 void 2959 Parse_End(void) 2960 { 2961 #ifdef CLEANUP 2962 Lst_Destroy(targCmds, (FreeProc *)free); 2963 if (targets) 2964 Lst_Destroy(targets, NOFREE); 2965 Lst_Destroy(defIncPath, Dir_Destroy); 2966 Lst_Destroy(sysIncPath, Dir_Destroy); 2967 Lst_Destroy(parseIncPath, Dir_Destroy); 2968 Lst_Destroy(includes, NOFREE); /* Should be empty now */ 2969 #endif 2970 } 2971 2972 2973 /*- 2974 *----------------------------------------------------------------------- 2975 * Parse_MainName -- 2976 * Return a Lst of the main target to create for main()'s sake. If 2977 * no such target exists, we Punt with an obnoxious error message. 2978 * 2979 * Results: 2980 * A Lst of the single node to create. 2981 * 2982 * Side Effects: 2983 * None. 2984 * 2985 *----------------------------------------------------------------------- 2986 */ 2987 Lst 2988 Parse_MainName(void) 2989 { 2990 Lst mainList; /* result list */ 2991 2992 mainList = Lst_Init(FALSE); 2993 2994 if (mainNode == NILGNODE) { 2995 Punt("no target to make."); 2996 /*NOTREACHED*/ 2997 } else if (mainNode->type & OP_DOUBLEDEP) { 2998 (void)Lst_AtEnd(mainList, (ClientData)mainNode); 2999 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW); 3000 } 3001 else 3002 (void)Lst_AtEnd(mainList, (ClientData)mainNode); 3003 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL); 3004 return (mainList); 3005 } 3006 3007 /*- 3008 *----------------------------------------------------------------------- 3009 * ParseMark -- 3010 * Add the filename and lineno to the GNode so that we remember 3011 * where it was first defined. 3012 * 3013 * Side Effects: 3014 * None. 3015 * 3016 *----------------------------------------------------------------------- 3017 */ 3018 static void 3019 ParseMark(GNode *gn) 3020 { 3021 gn->fname = strdup(curFile.fname); 3022 gn->lineno = curFile.lineno; 3023 } 3024
Indexes created Tue Sep 23 07:09:52 GMT 2025