Annotation of src/usr.bin/make/parse.c, Revision 1.145
1.144 christos 1: /* $NetBSD: parse.c,v 1.143 2008/01/03 22:14:53 dsl Exp $ */
1.15 christos 2:
1.1 cgd 3: /*
1.27 christos 4: * Copyright (c) 1988, 1989, 1990, 1993
5: * The Regents of the University of California. All rights reserved.
1.94 agc 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: /*
1.1 cgd 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:
1.96 ross 71: #ifndef MAKE_NATIVE
1.144 christos 72: static char rcsid[] = "$NetBSD: parse.c,v 1.143 2008/01/03 22:14:53 dsl Exp $";
1.36 lukem 73: #else
1.34 christos 74: #include <sys/cdefs.h>
1.1 cgd 75: #ifndef lint
1.15 christos 76: #if 0
1.27 christos 77: static char sccsid[] = "@(#)parse.c 8.3 (Berkeley) 3/19/94";
1.15 christos 78: #else
1.144 christos 79: __RCSID("$NetBSD: parse.c,v 1.143 2008/01/03 22:14:53 dsl Exp $");
1.15 christos 80: #endif
1.1 cgd 81: #endif /* not lint */
1.36 lukem 82: #endif
1.1 cgd 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
1.123 dsl 94: * the .include "..." function are kept in the 'parseIncPath' Lst, while
95: * those for the .include <...> are kept in the 'sysIncPath' Lst. The
1.1 cgd 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: *
1.9 jtc 107: * Parse_End Cleanup the module
108: *
1.1 cgd 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:
1.84 wiz 126: #include <ctype.h>
127: #include <errno.h>
1.125 dsl 128: #include <fcntl.h>
1.5 cgd 129: #include <stdarg.h>
130: #include <stdio.h>
1.84 wiz 131:
1.1 cgd 132: #include "make.h"
1.5 cgd 133: #include "hash.h"
134: #include "dir.h"
135: #include "job.h"
1.1 cgd 136: #include "buf.h"
137: #include "pathnames.h"
138:
139: /*
140: * These values are returned by ParseEOF to tell Parse_File whether to
141: * CONTINUE parsing, i.e. it had only reached the end of an include file,
142: * or if it's DONE.
143: */
144: #define CONTINUE 1
145: #define DONE 0
146: static Lst targets; /* targets we're working on */
1.45 mycroft 147: #ifdef CLEANUP
1.9 jtc 148: static Lst targCmds; /* command lines for targets */
1.45 mycroft 149: #endif
1.1 cgd 150: static Boolean inLine; /* true if currently in a dependency
151: * line or its commands */
152: static int fatals = 0;
153:
154: static GNode *mainNode; /* The main target to create. This is the
155: * first target on the first dependency
156: * line in the first makefile */
157: typedef struct IFile {
1.122 dsl 158: const char *fname; /* name of file */
1.145 ! christos 159: int lineno; /* line number in file */
1.125 dsl 160: int fd; /* the open file */
1.145 ! christos 161: int cond_depth; /* 'if' nesting when file opened */
1.123 dsl 162: char *P_str; /* point to base of string buffer */
163: char *P_ptr; /* point to next char of string buffer */
1.125 dsl 164: char *P_end; /* point to the end of string buffer */
1.145 ! christos 165: int P_buflen; /* current size of file buffer */
1.5 cgd 166: } IFile;
1.1 cgd 167:
1.127 dsl 168: #define IFILE_BUFLEN 0x8000
1.125 dsl 169: static IFile *curFile;
1.82 reinoud 170:
171:
172: /*
173: * Definitions for handling #include specifications
174: */
175:
1.123 dsl 176: static Lst includes; /* stack of IFiles generated by .includes */
1.1 cgd 177: Lst parseIncPath; /* list of directories for "..." includes */
178: Lst sysIncPath; /* list of directories for <...> includes */
1.74 tv 179: Lst defIncPath; /* default directories for <...> includes */
1.1 cgd 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 */
1.5 cgd 198: NoExport, /* .NOEXPORT */
1.32 gwr 199: NoPath, /* .NOPATH */
1.1 cgd 200: Not, /* Not special */
1.75 tv 201: NotParallel, /* .NOTPARALLEL */
1.1 cgd 202: Null, /* .NULL */
1.75 tv 203: ExObjdir, /* .OBJDIR */
1.1 cgd 204: Order, /* .ORDER */
1.18 christos 205: Parallel, /* .PARALLEL */
1.5 cgd 206: ExPath, /* .PATH */
1.22 christos 207: Phony, /* .PHONY */
1.48 sjg 208: #ifdef POSIX
209: Posix, /* .POSIX */
210: #endif
1.1 cgd 211: Precious, /* .PRECIOUS */
1.5 cgd 212: ExShell, /* .SHELL */
1.1 cgd 213: Silent, /* .SILENT */
214: SingleShell, /* .SINGLESHELL */
215: Suffixes, /* .SUFFIXES */
1.18 christos 216: Wait, /* .WAIT */
1.5 cgd 217: Attribute /* Generic attribute */
1.1 cgd 218: } ParseSpecial;
219:
1.5 cgd 220: static ParseSpecial specType;
1.1 cgd 221:
1.77 christos 222: #define LPAREN '('
223: #define RPAREN ')'
1.1 cgd 224: /*
225: * Predecessor node for handling .ORDER. Initialized to NILGNODE when .ORDER
226: * seen, then set to each successive source on the line.
227: */
228: static GNode *predecessor;
229:
230: /*
231: * The parseKeywords table is searched using binary search when deciding
232: * if a target or source is special. The 'spec' field is the ParseSpecial
233: * type of the keyword ("Not" if the keyword isn't special as a target) while
234: * the 'op' field is the operator to apply to the list of targets if the
235: * keyword is used as a source ("0" if the keyword isn't special as a source)
236: */
237: static struct {
1.93 christos 238: const char *name; /* Name of keyword */
1.1 cgd 239: ParseSpecial spec; /* Type when used as a target */
240: int op; /* Operator when used as a source */
241: } parseKeywords[] = {
242: { ".BEGIN", Begin, 0 },
243: { ".DEFAULT", Default, 0 },
244: { ".END", End, 0 },
245: { ".EXEC", Attribute, OP_EXEC },
246: { ".IGNORE", Ignore, OP_IGNORE },
247: { ".INCLUDES", Includes, 0 },
248: { ".INTERRUPT", Interrupt, 0 },
249: { ".INVISIBLE", Attribute, OP_INVISIBLE },
250: { ".JOIN", Attribute, OP_JOIN },
251: { ".LIBS", Libs, 0 },
1.29 christos 252: { ".MADE", Attribute, OP_MADE },
1.1 cgd 253: { ".MAIN", Main, 0 },
254: { ".MAKE", Attribute, OP_MAKE },
255: { ".MAKEFLAGS", MFlags, 0 },
256: { ".MFLAGS", MFlags, 0 },
1.32 gwr 257: { ".NOPATH", NoPath, OP_NOPATH },
1.1 cgd 258: { ".NOTMAIN", Attribute, OP_NOTMAIN },
259: { ".NOTPARALLEL", NotParallel, 0 },
1.18 christos 260: { ".NO_PARALLEL", NotParallel, 0 },
1.1 cgd 261: { ".NULL", Null, 0 },
1.75 tv 262: { ".OBJDIR", ExObjdir, 0 },
1.14 ws 263: { ".OPTIONAL", Attribute, OP_OPTIONAL },
1.1 cgd 264: { ".ORDER", Order, 0 },
1.18 christos 265: { ".PARALLEL", Parallel, 0 },
1.5 cgd 266: { ".PATH", ExPath, 0 },
1.22 christos 267: { ".PHONY", Phony, OP_PHONY },
1.48 sjg 268: #ifdef POSIX
269: { ".POSIX", Posix, 0 },
270: #endif
1.1 cgd 271: { ".PRECIOUS", Precious, OP_PRECIOUS },
272: { ".RECURSIVE", Attribute, OP_MAKE },
1.5 cgd 273: { ".SHELL", ExShell, 0 },
1.1 cgd 274: { ".SILENT", Silent, OP_SILENT },
275: { ".SINGLESHELL", SingleShell, 0 },
276: { ".SUFFIXES", Suffixes, 0 },
277: { ".USE", Attribute, OP_USE },
1.71 christos 278: { ".USEBEFORE", Attribute, OP_USEBEFORE },
1.18 christos 279: { ".WAIT", Wait, 0 },
1.1 cgd 280: };
281:
1.84 wiz 282: static int ParseIsEscaped(const char *, const char *);
1.122 dsl 283: static void ParseErrorInternal(const char *, size_t, int, const char *, ...)
1.53 is 284: __attribute__((__format__(__printf__, 4, 5)));
1.127 dsl 285: static void ParseVErrorInternal(FILE *, const char *, size_t, int, const char *, va_list)
286: __attribute__((__format__(__printf__, 5, 0)));
1.120 dsl 287: static int ParseFindKeyword(const char *);
1.84 wiz 288: static int ParseLinkSrc(ClientData, ClientData);
289: static int ParseDoOp(ClientData, ClientData);
1.120 dsl 290: static void ParseDoSrc(int, const char *);
1.84 wiz 291: static int ParseFindMain(ClientData, ClientData);
292: static int ParseAddDir(ClientData, ClientData);
293: static int ParseClearPath(ClientData, ClientData);
294: static void ParseDoDependency(char *);
295: static int ParseAddCmd(ClientData, ClientData);
296: static void ParseHasCommands(ClientData);
297: static void ParseDoInclude(char *);
1.122 dsl 298: static void ParseSetParseFile(const char *);
1.5 cgd 299: #ifdef SYSVINCLUDE
1.84 wiz 300: static void ParseTraditionalInclude(char *);
1.5 cgd 301: #endif
1.123 dsl 302: static int ParseEOF(void);
1.84 wiz 303: static char *ParseReadLine(void);
304: static void ParseFinishLine(void);
305: static void ParseMark(GNode *);
1.5 cgd 306:
1.56 christos 307: extern int maxJobs;
308:
1.77 christos 309:
310: /*-
311: *----------------------------------------------------------------------
312: * ParseIsEscaped --
313: * Check if the current character is escaped on the current line
314: *
315: * Results:
316: * 0 if the character is not backslash escaped, 1 otherwise
317: *
318: * Side Effects:
319: * None
320: *----------------------------------------------------------------------
321: */
322: static int
1.84 wiz 323: ParseIsEscaped(const char *line, const char *c)
1.77 christos 324: {
325: int active = 0;
326: for (;;) {
327: if (line == c)
328: return active;
329: if (*--c != '\\')
330: return active;
331: active = !active;
332: }
333: }
334:
1.1 cgd 335: /*-
336: *----------------------------------------------------------------------
337: * ParseFindKeyword --
338: * Look in the table of keywords for one matching the given string.
339: *
1.84 wiz 340: * Input:
341: * str String to find
342: *
1.1 cgd 343: * Results:
344: * The index of the keyword, or -1 if it isn't there.
345: *
346: * Side Effects:
347: * None
348: *----------------------------------------------------------------------
349: */
350: static int
1.120 dsl 351: ParseFindKeyword(const char *str)
1.1 cgd 352: {
1.84 wiz 353: int start, end, cur;
354: int diff;
1.27 christos 355:
1.1 cgd 356: start = 0;
357: end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1;
358:
359: do {
360: cur = start + ((end - start) / 2);
1.103 christos 361: diff = strcmp(str, parseKeywords[cur].name);
1.1 cgd 362:
363: if (diff == 0) {
364: return (cur);
365: } else if (diff < 0) {
366: end = cur - 1;
367: } else {
368: start = cur + 1;
369: }
370: } while (start <= end);
371: return (-1);
372: }
373:
374: /*-
1.38 christos 375: * ParseVErrorInternal --
1.1 cgd 376: * Error message abort function for parsing. Prints out the context
377: * of the error (line number and file) as well as the message with
378: * two optional arguments.
379: *
380: * Results:
381: * None
382: *
383: * Side Effects:
384: * "fatals" is incremented if the level is PARSE_FATAL.
385: */
386: /* VARARGS */
1.38 christos 387: static void
1.127 dsl 388: ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type,
1.122 dsl 389: const char *fmt, va_list ap)
1.38 christos 390: {
1.56 christos 391: static Boolean fatal_warning_error_printed = FALSE;
392:
1.127 dsl 393: (void)fprintf(f, "%s: \"", progname);
1.63 christos 394:
1.131 dsl 395: if (*cfname != '/' && strcmp(cfname, "(stdin)") != 0) {
1.93 christos 396: char *cp;
397: const char *dir;
1.55 sjg 398:
399: /*
400: * Nothing is more anoying than not knowing which Makefile
401: * is the culprit.
402: */
403: dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp);
1.63 christos 404: if (dir == NULL || *dir == '\0' ||
1.55 sjg 405: (*dir == '.' && dir[1] == '\0'))
406: dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp);
1.63 christos 407: if (dir == NULL)
408: dir = ".";
1.55 sjg 409:
1.127 dsl 410: (void)fprintf(f, "%s/%s", dir, cfname);
1.55 sjg 411: } else
1.127 dsl 412: (void)fprintf(f, "%s", cfname);
1.63 christos 413:
1.127 dsl 414: (void)fprintf(f, "\" line %d: ", (int)clineno);
1.38 christos 415: if (type == PARSE_WARNING)
1.127 dsl 416: (void)fprintf(f, "warning: ");
417: (void)vfprintf(f, fmt, ap);
418: (void)fprintf(f, "\n");
419: (void)fflush(f);
1.56 christos 420: if (type == PARSE_FATAL || parseWarnFatal)
1.38 christos 421: fatals += 1;
1.56 christos 422: if (parseWarnFatal && !fatal_warning_error_printed) {
423: Error("parsing warnings being treated as errors");
424: fatal_warning_error_printed = TRUE;
425: }
1.38 christos 426: }
427:
428: /*-
429: * ParseErrorInternal --
430: * Error function
431: *
432: * Results:
433: * None
434: *
435: * Side Effects:
436: * None
437: */
438: /* VARARGS */
439: static void
1.122 dsl 440: ParseErrorInternal(const char *cfname, size_t clineno, int type,
441: const char *fmt, ...)
1.38 christos 442: {
443: va_list ap;
1.84 wiz 444:
1.38 christos 445: va_start(ap, fmt);
1.127 dsl 446: ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap);
1.38 christos 447: va_end(ap);
1.127 dsl 448:
1.131 dsl 449: if (debug_file != stderr && debug_file != stdout) {
1.127 dsl 450: va_start(ap, fmt);
1.131 dsl 451: ParseVErrorInternal(debug_file, cfname, clineno, type, fmt, ap);
1.127 dsl 452: va_end(ap);
453: }
1.38 christos 454: }
455:
456: /*-
457: * Parse_Error --
458: * External interface to ParseErrorInternal; uses the default filename
459: * Line number.
460: *
461: * Results:
462: * None
463: *
464: * Side Effects:
465: * None
466: */
467: /* VARARGS */
1.1 cgd 468: void
1.93 christos 469: Parse_Error(int type, const char *fmt, ...)
1.1 cgd 470: {
471: va_list ap;
1.84 wiz 472:
1.5 cgd 473: va_start(ap, fmt);
1.127 dsl 474: ParseVErrorInternal(stderr, curFile->fname, curFile->lineno,
475: type, fmt, ap);
1.1 cgd 476: va_end(ap);
1.127 dsl 477:
1.131 dsl 478: if (debug_file != stderr && debug_file != stdout) {
1.127 dsl 479: va_start(ap, fmt);
480: ParseVErrorInternal(debug_file, curFile->fname, curFile->lineno,
481: type, fmt, ap);
482: va_end(ap);
483: }
1.1 cgd 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: *
1.84 wiz 493: * Input:
494: * pgnp The parent node
495: * cgpn The child node
496: *
1.1 cgd 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
1.84 wiz 507: ParseLinkSrc(ClientData pgnp, ClientData cgnp)
1.1 cgd 508: {
1.105 christos 509: GNode *pgn = (GNode *)pgnp;
510: GNode *cgn = (GNode *)cgnp;
1.52 mycroft 511:
1.47 mycroft 512: if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts))
1.103 christos 513: pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts));
1.119 dsl 514: (void)Lst_AtEnd(pgn->children, cgn);
1.52 mycroft 515: if (specType == Not)
1.119 dsl 516: (void)Lst_AtEnd(cgn->parents, pgn);
1.52 mycroft 517: pgn->unmade += 1;
1.109 dsl 518: if (DEBUG(PARSE)) {
1.116 dsl 519: fprintf(debug_file, "# ParseLinkSrc: added child %s - %s\n", pgn->name, cgn->name);
1.109 dsl 520: Targ_PrintNode(pgn, 0);
521: Targ_PrintNode(cgn, 0);
522: }
1.1 cgd 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: *
1.84 wiz 534: * Input:
535: * gnp The node to which the operator is to be applied
536: * opp The operator to apply
537: *
1.1 cgd 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
1.84 wiz 547: ParseDoOp(ClientData gnp, ClientData opp)
1.1 cgd 548: {
1.105 christos 549: GNode *gn = (GNode *)gnp;
550: int op = *(int *)opp;
1.1 cgd 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
1.27 christos 554: * the operator actually has some dependency information in it, complain.
1.1 cgd 555: */
556: if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) &&
557: !OP_NOP(gn->type) && !OP_NOP(op))
558: {
1.97 christos 559: Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name);
1.1 cgd 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: */
1.84 wiz 572: GNode *cohort;
1.27 christos 573:
1.33 mycroft 574: /*
1.46 mycroft 575: * Propagate copied bits to the initial node. They'll be propagated
576: * back to the rest of the cohorts later.
1.33 mycroft 577: */
1.46 mycroft 578: gn->type |= op & ~OP_OPMASK;
1.33 mycroft 579:
1.120 dsl 580: cohort = Targ_FindNode(gn->name, TARG_NOHASH);
1.1 cgd 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
1.46 mycroft 585: * sorry. (I think this is pointless now, since the relevant list
586: * traversals will no longer see this node anyway. -mycroft)
1.1 cgd 587: */
1.46 mycroft 588: cohort->type = op | OP_INVISIBLE;
1.119 dsl 589: (void)Lst_AtEnd(gn->cohorts, cohort);
1.83 pk 590: cohort->centurion = gn;
591: gn->unmade_cohorts += 1;
1.120 dsl 592: snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d",
593: gn->unmade_cohorts);
1.46 mycroft 594: } else {
1.1 cgd 595: /*
1.46 mycroft 596: * We don't want to nuke any previous flags (whatever they were) so we
597: * just OR the new operator into the old
1.1 cgd 598: */
1.46 mycroft 599: gn->type |= op;
1.1 cgd 600: }
1.33 mycroft 601:
1.1 cgd 602: return (0);
603: }
604:
1.27 christos 605: /*-
1.18 christos 606: *---------------------------------------------------------------------
1.1 cgd 607: * ParseDoSrc --
608: * Given the name of a source, figure out if it is an attribute
609: * and apply it to the targets if it is. Else decide if there is
610: * some attribute which should be applied *to* the source because
611: * of some special target and apply it if so. Otherwise, make the
612: * source be a child of the targets in the list 'targets'
613: *
1.84 wiz 614: * Input:
615: * tOp operator (if any) from special targets
616: * src name of the source to handle
617: *
1.1 cgd 618: * Results:
619: * None
620: *
621: * Side Effects:
622: * Operator bits may be added to the list of targets or to the source.
623: * The targets may have a new source added to their lists of children.
624: *---------------------------------------------------------------------
625: */
626: static void
1.120 dsl 627: ParseDoSrc(int tOp, const char *src)
1.1 cgd 628: {
1.18 christos 629: GNode *gn = NULL;
1.120 dsl 630: static int wait_number = 0;
631: char wait_src[16];
1.1 cgd 632:
1.40 christos 633: if (*src == '.' && isupper ((unsigned char)src[1])) {
1.1 cgd 634: int keywd = ParseFindKeyword(src);
635: if (keywd != -1) {
1.18 christos 636: int op = parseKeywords[keywd].op;
637: if (op != 0) {
1.119 dsl 638: Lst_ForEach(targets, ParseDoOp, &op);
1.18 christos 639: return;
640: }
641: if (parseKeywords[keywd].spec == Wait) {
1.120 dsl 642: /*
643: * We add a .WAIT node in the dependency list.
644: * After any dynamic dependencies (and filename globbing)
645: * have happened, it is given a dependency on the each
646: * previous child back to and previous .WAIT node.
647: * The next child won't be scheduled until the .WAIT node
648: * is built.
649: * We give each .WAIT node a unique name (mainly for diag).
650: */
651: snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number);
652: gn = Targ_FindNode(wait_src, TARG_NOHASH);
653: gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN;
654: Lst_ForEach(targets, ParseLinkSrc, gn);
1.18 christos 655: return;
656: }
1.1 cgd 657: }
658: }
1.18 christos 659:
660: switch (specType) {
661: case Main:
1.1 cgd 662: /*
663: * If we have noted the existence of a .MAIN, it means we need
664: * to add the sources of said target to the list of things
665: * to create. The string 'src' is likely to be free, so we
666: * must make a new copy of it. Note that this will only be
667: * invoked if the user didn't specify a target on the command
668: * line. This is to allow #ifmake's to succeed, or something...
669: */
1.119 dsl 670: (void)Lst_AtEnd(create, estrdup(src));
1.1 cgd 671: /*
1.118 dsl 672: * Add the name to the .TARGETS variable as well, so the user can
1.1 cgd 673: * employ that, if desired.
674: */
675: Var_Append(".TARGETS", src, VAR_GLOBAL);
1.18 christos 676: return;
677:
678: case Order:
1.1 cgd 679: /*
680: * Create proper predecessor/successor links between the previous
681: * source and the current one.
682: */
683: gn = Targ_FindNode(src, TARG_CREATE);
684: if (predecessor != NILGNODE) {
1.120 dsl 685: (void)Lst_AtEnd(predecessor->order_succ, gn);
686: (void)Lst_AtEnd(gn->order_pred, predecessor);
1.109 dsl 687: if (DEBUG(PARSE)) {
1.116 dsl 688: fprintf(debug_file, "# ParseDoSrc: added Order dependency %s - %s\n",
1.109 dsl 689: predecessor->name, gn->name);
690: Targ_PrintNode(predecessor, 0);
691: Targ_PrintNode(gn, 0);
692: }
1.1 cgd 693: }
694: /*
695: * The current source now becomes the predecessor for the next one.
696: */
697: predecessor = gn;
1.18 christos 698: break;
699:
700: default:
1.1 cgd 701: /*
702: * If the source is not an attribute, we need to find/create
703: * a node for it. After that we can apply any operator to it
704: * from a special target or link it to its parents, as
705: * appropriate.
706: *
707: * In the case of a source that was the object of a :: operator,
708: * the attribute is applied to all of its instances (as kept in
709: * the 'cohorts' list of the node) or all the cohorts are linked
710: * to all the targets.
711: */
1.118 dsl 712:
713: /* Find/create the 'src' node and attach to all targets */
1.97 christos 714: gn = Targ_FindNode(src, TARG_CREATE);
1.1 cgd 715: if (tOp) {
716: gn->type |= tOp;
717: } else {
1.119 dsl 718: Lst_ForEach(targets, ParseLinkSrc, gn);
1.1 cgd 719: }
1.18 christos 720: break;
721: }
1.1 cgd 722: }
723:
724: /*-
725: *-----------------------------------------------------------------------
726: * ParseFindMain --
727: * Find a real target in the list and set it to be the main one.
728: * Called by ParseDoDependency when a main target hasn't been found
729: * yet.
730: *
1.84 wiz 731: * Input:
732: * gnp Node to examine
733: *
1.1 cgd 734: * Results:
735: * 0 if main not found yet, 1 if it is.
736: *
737: * Side Effects:
738: * mainNode is changed and Targ_SetMain is called.
739: *
740: *-----------------------------------------------------------------------
741: */
742: static int
1.84 wiz 743: ParseFindMain(ClientData gnp, ClientData dummy)
1.1 cgd 744: {
1.105 christos 745: GNode *gn = (GNode *)gnp;
1.30 christos 746: if ((gn->type & OP_NOTARGET) == 0) {
1.1 cgd 747: mainNode = gn;
748: Targ_SetMain(gn);
1.9 jtc 749: return (dummy ? 1 : 1);
1.1 cgd 750: } else {
1.9 jtc 751: return (dummy ? 0 : 0);
1.1 cgd 752: }
753: }
754:
755: /*-
756: *-----------------------------------------------------------------------
757: * ParseAddDir --
758: * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going
759: *
760: * Results:
761: * === 0
762: *
763: * Side Effects:
764: * See Dir_AddDir.
765: *
766: *-----------------------------------------------------------------------
767: */
768: static int
1.84 wiz 769: ParseAddDir(ClientData path, ClientData name)
1.1 cgd 770: {
1.105 christos 771: (void)Dir_AddDir((Lst) path, (char *)name);
1.1 cgd 772: return(0);
773: }
774:
775: /*-
776: *-----------------------------------------------------------------------
777: * ParseClearPath --
778: * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going
779: *
780: * Results:
781: * === 0
782: *
783: * Side Effects:
784: * See Dir_ClearPath
785: *
786: *-----------------------------------------------------------------------
787: */
788: static int
1.84 wiz 789: ParseClearPath(ClientData path, ClientData dummy)
1.1 cgd 790: {
1.9 jtc 791: Dir_ClearPath((Lst) path);
792: return(dummy ? 0 : 0);
1.1 cgd 793: }
794:
795: /*-
796: *---------------------------------------------------------------------
797: * ParseDoDependency --
798: * Parse the dependency line in line.
799: *
1.84 wiz 800: * Input:
801: * line the line to parse
802: *
1.1 cgd 803: * Results:
804: * None
805: *
806: * Side Effects:
807: * The nodes of the sources are linked as children to the nodes of the
808: * targets. Some nodes may be created.
809: *
810: * We parse a dependency line by first extracting words from the line and
811: * finding nodes in the list of all targets with that name. This is done
812: * until a character is encountered which is an operator character. Currently
813: * these are only ! and :. At this point the operator is parsed and the
814: * pointer into the line advanced until the first source is encountered.
815: * The parsed operator is applied to each node in the 'targets' list,
816: * which is where the nodes found for the targets are kept, by means of
817: * the ParseDoOp function.
818: * The sources are read in much the same way as the targets were except
819: * that now they are expanded using the wildcarding scheme of the C-Shell
820: * and all instances of the resulting words in the list of all targets
821: * are found. Each of the resulting nodes is then linked to each of the
822: * targets as one of its children.
823: * Certain targets are handled specially. These are the ones detailed
824: * by the specType variable.
825: * The storing of transformation rules is also taken care of here.
826: * A target is recognized as a transformation rule by calling
827: * Suff_IsTransform. If it is a transformation rule, its node is gotten
828: * from the suffix module via Suff_AddTransform rather than the standard
829: * Targ_FindNode in the target module.
830: *---------------------------------------------------------------------
831: */
832: static void
1.84 wiz 833: ParseDoDependency(char *line)
1.1 cgd 834: {
1.9 jtc 835: char *cp; /* our current position */
1.98 christos 836: GNode *gn = NULL; /* a general purpose temporary node */
1.9 jtc 837: int op; /* the operator on the line */
1.1 cgd 838: char savec; /* a place to save a character */
839: Lst paths; /* List of search paths to alter when parsing
840: * a list of .PATH targets */
841: int tOp; /* operator from special target */
1.18 christos 842: Lst sources; /* list of archive source names after
843: * expansion */
1.1 cgd 844: Lst curTargs; /* list of target names to be found and added
845: * to the targets list */
1.77 christos 846: char *lstart = line;
1.1 cgd 847:
1.120 dsl 848: if (DEBUG(PARSE))
849: fprintf(debug_file, "ParseDoDependency(%s)\n", line);
1.1 cgd 850: tOp = 0;
851:
852: specType = Not;
853: paths = (Lst)NULL;
854:
855: curTargs = Lst_Init(FALSE);
1.27 christos 856:
1.1 cgd 857: do {
1.121 dsl 858: for (cp = line; *cp && (ParseIsEscaped(lstart, cp) ||
859: !(isspace((unsigned char)*cp) ||
860: *cp == '!' || *cp == ':' || *cp == LPAREN));
861: cp++) {
1.1 cgd 862: if (*cp == '$') {
863: /*
864: * Must be a dynamic source (would have been expanded
865: * otherwise), so call the Var module to parse the puppy
866: * so we can safely advance beyond it...There should be
867: * no errors in this, as they would have been discovered
868: * in the initial Var_Subst and we wouldn't be here.
869: */
1.145 ! christos 870: int length;
1.114 christos 871: void *freeIt;
1.145 ! christos 872: char *result;
1.1 cgd 873:
1.145 ! christos 874: result = Var_Parse(cp, VAR_CMD, TRUE, &length, &freeIt);
1.114 christos 875: if (freeIt)
876: free(freeIt);
1.1 cgd 877: cp += length-1;
878: }
879: }
1.121 dsl 880:
1.77 christos 881: if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) {
1.1 cgd 882: /*
883: * Archives must be handled specially to make sure the OP_ARCHV
884: * flag is set in their 'type' field, for one thing, and because
885: * things like "archive(file1.o file2.o file3.o)" are permissible.
886: * Arch_ParseArchive will set 'line' to be the first non-blank
887: * after the archive-spec. It creates/finds nodes for the members
888: * and places them on the given list, returning SUCCESS if all
889: * went well and FAILURE if there was an error in the
890: * specification. On error, line should remain untouched.
891: */
1.97 christos 892: if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) {
893: Parse_Error(PARSE_FATAL,
1.1 cgd 894: "Error in archive specification: \"%s\"", line);
1.112 christos 895: goto out;
1.1 cgd 896: } else {
897: continue;
898: }
899: }
900: savec = *cp;
1.27 christos 901:
1.1 cgd 902: if (!*cp) {
903: /*
904: * Ending a dependency line without an operator is a Bozo
1.65 sommerfe 905: * no-no. As a heuristic, this is also often triggered by
906: * undetected conflicts from cvs/rcs merges.
1.1 cgd 907: */
1.65 sommerfe 908: if ((strncmp(line, "<<<<<<", 6) == 0) ||
909: (strncmp(line, "======", 6) == 0) ||
910: (strncmp(line, ">>>>>>", 6) == 0))
1.97 christos 911: Parse_Error(PARSE_FATAL,
1.67 sommerfe 912: "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts");
1.65 sommerfe 913: else
1.97 christos 914: Parse_Error(PARSE_FATAL, "Need an operator");
1.112 christos 915: goto out;
1.1 cgd 916: }
917: *cp = '\0';
1.118 dsl 918:
1.1 cgd 919: /*
920: * Have a word in line. See if it's a special target and set
921: * specType to match it.
922: */
1.40 christos 923: if (*line == '.' && isupper ((unsigned char)line[1])) {
1.1 cgd 924: /*
925: * See if the target is a special target that must have it
1.27 christos 926: * or its sources handled specially.
1.1 cgd 927: */
928: int keywd = ParseFindKeyword(line);
929: if (keywd != -1) {
1.5 cgd 930: if (specType == ExPath && parseKeywords[keywd].spec != ExPath) {
1.1 cgd 931: Parse_Error(PARSE_FATAL, "Mismatched special targets");
1.112 christos 932: goto out;
1.1 cgd 933: }
1.27 christos 934:
1.1 cgd 935: specType = parseKeywords[keywd].spec;
936: tOp = parseKeywords[keywd].op;
937:
938: /*
939: * Certain special targets have special semantics:
940: * .PATH Have to set the dirSearchPath
941: * variable too
942: * .MAIN Its sources are only used if
943: * nothing has been specified to
944: * create.
945: * .DEFAULT Need to create a node to hang
946: * commands on, but we don't want
947: * it in the graph, nor do we want
948: * it to be the Main Target, so we
949: * create it, set OP_NOTMAIN and
950: * add it to the list, setting
951: * DEFAULT to the new node for
952: * later use. We claim the node is
953: * A transformation rule to make
954: * life easier later, when we'll
955: * use Make_HandleUse to actually
956: * apply the .DEFAULT commands.
1.22 christos 957: * .PHONY The list of targets
1.32 gwr 958: * .NOPATH Don't search for file in the path
1.1 cgd 959: * .BEGIN
960: * .END
961: * .INTERRUPT Are not to be considered the
962: * main target.
963: * .NOTPARALLEL Make only one target at a time.
964: * .SINGLESHELL Create a shell for each command.
965: * .ORDER Must set initial predecessor to NIL
966: */
967: switch (specType) {
1.5 cgd 968: case ExPath:
1.1 cgd 969: if (paths == NULL) {
970: paths = Lst_Init(FALSE);
971: }
1.119 dsl 972: (void)Lst_AtEnd(paths, dirSearchPath);
1.1 cgd 973: break;
974: case Main:
975: if (!Lst_IsEmpty(create)) {
976: specType = Not;
977: }
978: break;
979: case Begin:
980: case End:
981: case Interrupt:
982: gn = Targ_FindNode(line, TARG_CREATE);
1.99 christos 983: gn->type |= OP_NOTMAIN|OP_SPECIAL;
1.119 dsl 984: (void)Lst_AtEnd(targets, gn);
1.1 cgd 985: break;
986: case Default:
987: gn = Targ_NewGN(".DEFAULT");
988: gn->type |= (OP_NOTMAIN|OP_TRANSFORM);
1.119 dsl 989: (void)Lst_AtEnd(targets, gn);
1.1 cgd 990: DEFAULT = gn;
991: break;
992: case NotParallel:
1.113 dsl 993: maxJobs = 1;
1.1 cgd 994: break;
995: case SingleShell:
1.54 sommerfe 996: compatMake = TRUE;
1.1 cgd 997: break;
998: case Order:
999: predecessor = NILGNODE;
1000: break;
1.5 cgd 1001: default:
1002: break;
1.1 cgd 1003: }
1.103 christos 1004: } else if (strncmp(line, ".PATH", 5) == 0) {
1.1 cgd 1005: /*
1006: * .PATH<suffix> has to be handled specially.
1007: * Call on the suffix module to give us a path to
1008: * modify.
1009: */
1010: Lst path;
1.27 christos 1011:
1.5 cgd 1012: specType = ExPath;
1.97 christos 1013: path = Suff_GetPath(&line[5]);
1.1 cgd 1014: if (path == NILLST) {
1.97 christos 1015: Parse_Error(PARSE_FATAL,
1.1 cgd 1016: "Suffix '%s' not defined (yet)",
1017: &line[5]);
1.112 christos 1018: goto out;
1.1 cgd 1019: } else {
1020: if (paths == (Lst)NULL) {
1021: paths = Lst_Init(FALSE);
1022: }
1.119 dsl 1023: (void)Lst_AtEnd(paths, path);
1.1 cgd 1024: }
1025: }
1026: }
1.27 christos 1027:
1.1 cgd 1028: /*
1029: * Have word in line. Get or create its node and stick it at
1.27 christos 1030: * the end of the targets list
1.1 cgd 1031: */
1032: if ((specType == Not) && (*line != '\0')) {
1033: if (Dir_HasWildcards(line)) {
1034: /*
1035: * Targets are to be sought only in the current directory,
1036: * so create an empty path for the thing. Note we need to
1037: * use Dir_Destroy in the destruction of the path as the
1038: * Dir module could have added a directory to the path...
1039: */
1040: Lst emptyPath = Lst_Init(FALSE);
1.27 christos 1041:
1.1 cgd 1042: Dir_Expand(line, emptyPath, curTargs);
1.27 christos 1043:
1.1 cgd 1044: Lst_Destroy(emptyPath, Dir_Destroy);
1045: } else {
1046: /*
1047: * No wildcards, but we want to avoid code duplication,
1048: * so create a list with the word on it.
1049: */
1.119 dsl 1050: (void)Lst_AtEnd(curTargs, line);
1.1 cgd 1051: }
1.27 christos 1052:
1.1 cgd 1053: while(!Lst_IsEmpty(curTargs)) {
1054: char *targName = (char *)Lst_DeQueue(curTargs);
1.27 christos 1055:
1.1 cgd 1056: if (!Suff_IsTransform (targName)) {
1.97 christos 1057: gn = Targ_FindNode(targName, TARG_CREATE);
1.1 cgd 1058: } else {
1.97 christos 1059: gn = Suff_AddTransform(targName);
1.1 cgd 1060: }
1.27 christos 1061:
1.119 dsl 1062: (void)Lst_AtEnd(targets, gn);
1.1 cgd 1063: }
1.5 cgd 1064: } else if (specType == ExPath && *line != '.' && *line != '\0') {
1.1 cgd 1065: Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line);
1066: }
1.27 christos 1067:
1.1 cgd 1068: *cp = savec;
1069: /*
1070: * If it is a special type and not .PATH, it's the only target we
1071: * allow on this line...
1072: */
1.5 cgd 1073: if (specType != Not && specType != ExPath) {
1.115 christos 1074: Boolean warning = FALSE;
1.27 christos 1075:
1.77 christos 1076: while (*cp && (ParseIsEscaped(lstart, cp) ||
1077: ((*cp != '!') && (*cp != ':')))) {
1078: if (ParseIsEscaped(lstart, cp) ||
1079: (*cp != ' ' && *cp != '\t')) {
1.115 christos 1080: warning = TRUE;
1.1 cgd 1081: }
1082: cp++;
1083: }
1.115 christos 1084: if (warning) {
1.1 cgd 1085: Parse_Error(PARSE_WARNING, "Extra target ignored");
1086: }
1087: } else {
1.40 christos 1088: while (*cp && isspace ((unsigned char)*cp)) {
1.1 cgd 1089: cp++;
1090: }
1091: }
1092: line = cp;
1.77 christos 1093: } while (*line && (ParseIsEscaped(lstart, line) ||
1094: ((*line != '!') && (*line != ':'))));
1.1 cgd 1095:
1096: /*
1097: * Don't need the list of target names anymore...
1098: */
1099: Lst_Destroy(curTargs, NOFREE);
1.112 christos 1100: curTargs = NULL;
1.1 cgd 1101:
1102: if (!Lst_IsEmpty(targets)) {
1103: switch(specType) {
1104: default:
1105: Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored");
1106: break;
1107: case Default:
1108: case Begin:
1109: case End:
1110: case Interrupt:
1111: /*
1112: * These four create nodes on which to hang commands, so
1113: * targets shouldn't be empty...
1114: */
1115: case Not:
1116: /*
1117: * Nothing special here -- targets can be empty if it wants.
1118: */
1119: break;
1120: }
1121: }
1122:
1123: /*
1124: * Have now parsed all the target names. Must parse the operator next. The
1125: * result is left in op .
1126: */
1127: if (*cp == '!') {
1128: op = OP_FORCE;
1129: } else if (*cp == ':') {
1130: if (cp[1] == ':') {
1131: op = OP_DOUBLEDEP;
1132: cp++;
1133: } else {
1134: op = OP_DEPENDS;
1135: }
1136: } else {
1.97 christos 1137: Parse_Error(PARSE_FATAL, "Missing dependency operator");
1.112 christos 1138: goto out;
1.1 cgd 1139: }
1140:
1141: cp++; /* Advance beyond operator */
1142:
1.119 dsl 1143: Lst_ForEach(targets, ParseDoOp, &op);
1.1 cgd 1144:
1145: /*
1.27 christos 1146: * Get to the first source
1.1 cgd 1147: */
1.40 christos 1148: while (*cp && isspace ((unsigned char)*cp)) {
1.1 cgd 1149: cp++;
1150: }
1151: line = cp;
1152:
1153: /*
1154: * Several special targets take different actions if present with no
1155: * sources:
1156: * a .SUFFIXES line with no sources clears out all old suffixes
1157: * a .PRECIOUS line makes all targets precious
1158: * a .IGNORE line ignores errors for all targets
1159: * a .SILENT line creates silence when making all targets
1160: * a .PATH removes all directories from the search path(s).
1161: */
1162: if (!*line) {
1163: switch (specType) {
1164: case Suffixes:
1.97 christos 1165: Suff_ClearSuffixes();
1.1 cgd 1166: break;
1167: case Precious:
1168: allPrecious = TRUE;
1169: break;
1170: case Ignore:
1171: ignoreErrors = TRUE;
1172: break;
1173: case Silent:
1174: beSilent = TRUE;
1175: break;
1.5 cgd 1176: case ExPath:
1.119 dsl 1177: Lst_ForEach(paths, ParseClearPath, NULL);
1.85 sjg 1178: Dir_SetPATH();
1.1 cgd 1179: break;
1.48 sjg 1180: #ifdef POSIX
1181: case Posix:
1.70 sjg 1182: Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0);
1.48 sjg 1183: break;
1184: #endif
1.5 cgd 1185: default:
1186: break;
1.1 cgd 1187: }
1188: } else if (specType == MFlags) {
1189: /*
1190: * Call on functions in main.c to deal with these arguments and
1191: * set the initial character to a null-character so the loop to
1192: * get sources won't get anything
1193: */
1.97 christos 1194: Main_ParseArgLine(line);
1.1 cgd 1195: *line = '\0';
1.5 cgd 1196: } else if (specType == ExShell) {
1.97 christos 1197: if (Job_ParseShell(line) != SUCCESS) {
1198: Parse_Error(PARSE_FATAL, "improper shell specification");
1.112 christos 1199: goto out;
1.1 cgd 1200: }
1201: *line = '\0';
1202: } else if ((specType == NotParallel) || (specType == SingleShell)) {
1203: *line = '\0';
1204: }
1.27 christos 1205:
1.1 cgd 1206: /*
1.27 christos 1207: * NOW GO FOR THE SOURCES
1.1 cgd 1208: */
1.5 cgd 1209: if ((specType == Suffixes) || (specType == ExPath) ||
1.1 cgd 1210: (specType == Includes) || (specType == Libs) ||
1.75 tv 1211: (specType == Null) || (specType == ExObjdir))
1.1 cgd 1212: {
1213: while (*line) {
1214: /*
1215: * If the target was one that doesn't take files as its sources
1216: * but takes something like suffixes, we take each
1217: * space-separated word on the line as a something and deal
1218: * with it accordingly.
1219: *
1220: * If the target was .SUFFIXES, we take each source as a
1221: * suffix and add it to the list of suffixes maintained by the
1222: * Suff module.
1223: *
1224: * If the target was a .PATH, we add the source as a directory
1225: * to search on the search path.
1226: *
1227: * If it was .INCLUDES, the source is taken to be the suffix of
1228: * files which will be #included and whose search path should
1229: * be present in the .INCLUDES variable.
1230: *
1231: * If it was .LIBS, the source is taken to be the suffix of
1232: * files which are considered libraries and whose search path
1233: * should be present in the .LIBS variable.
1234: *
1235: * If it was .NULL, the source is the suffix to use when a file
1236: * has no valid suffix.
1.75 tv 1237: *
1238: * If it was .OBJDIR, the source is a new definition for .OBJDIR,
1239: * and will cause make to do a new chdir to that path.
1.1 cgd 1240: */
1.40 christos 1241: while (*cp && !isspace ((unsigned char)*cp)) {
1.1 cgd 1242: cp++;
1243: }
1244: savec = *cp;
1245: *cp = '\0';
1246: switch (specType) {
1247: case Suffixes:
1.97 christos 1248: Suff_AddSuffix(line, &mainNode);
1.1 cgd 1249: break;
1.5 cgd 1250: case ExPath:
1.119 dsl 1251: Lst_ForEach(paths, ParseAddDir, line);
1.1 cgd 1252: break;
1253: case Includes:
1.97 christos 1254: Suff_AddInclude(line);
1.1 cgd 1255: break;
1256: case Libs:
1.97 christos 1257: Suff_AddLib(line);
1.1 cgd 1258: break;
1259: case Null:
1.97 christos 1260: Suff_SetNull(line);
1.75 tv 1261: break;
1262: case ExObjdir:
1263: Main_SetObjdir(line);
1.1 cgd 1264: break;
1.5 cgd 1265: default:
1266: break;
1.1 cgd 1267: }
1268: *cp = savec;
1269: if (savec != '\0') {
1270: cp++;
1271: }
1.40 christos 1272: while (*cp && isspace ((unsigned char)*cp)) {
1.1 cgd 1273: cp++;
1274: }
1275: line = cp;
1276: }
1277: if (paths) {
1278: Lst_Destroy(paths, NOFREE);
1279: }
1.85 sjg 1280: if (specType == ExPath)
1281: Dir_SetPATH();
1.1 cgd 1282: } else {
1283: while (*line) {
1284: /*
1285: * The targets take real sources, so we must beware of archive
1286: * specifications (i.e. things with left parentheses in them)
1287: * and handle them accordingly.
1288: */
1.118 dsl 1289: for (; *cp && !isspace ((unsigned char)*cp); cp++) {
1.77 christos 1290: if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) {
1.1 cgd 1291: /*
1292: * Only stop for a left parenthesis if it isn't at the
1293: * start of a word (that'll be for variable changes
1294: * later) and isn't preceded by a dollar sign (a dynamic
1295: * source).
1296: */
1297: break;
1298: }
1299: }
1300:
1.77 christos 1301: if (*cp == LPAREN) {
1.97 christos 1302: sources = Lst_Init(FALSE);
1303: if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) {
1304: Parse_Error(PARSE_FATAL,
1.1 cgd 1305: "Error in source archive spec \"%s\"", line);
1.112 christos 1306: goto out;
1.1 cgd 1307: }
1308:
1309: while (!Lst_IsEmpty (sources)) {
1.103 christos 1310: gn = (GNode *)Lst_DeQueue(sources);
1.120 dsl 1311: ParseDoSrc(tOp, gn->name);
1.1 cgd 1312: }
1.97 christos 1313: Lst_Destroy(sources, NOFREE);
1.1 cgd 1314: cp = line;
1315: } else {
1316: if (*cp) {
1317: *cp = '\0';
1318: cp += 1;
1319: }
1320:
1.120 dsl 1321: ParseDoSrc(tOp, line);
1.1 cgd 1322: }
1.40 christos 1323: while (*cp && isspace ((unsigned char)*cp)) {
1.1 cgd 1324: cp++;
1325: }
1326: line = cp;
1327: }
1328: }
1.27 christos 1329:
1.1 cgd 1330: if (mainNode == NILGNODE) {
1331: /*
1332: * If we have yet to decide on a main target to make, in the
1333: * absence of any user input, we want the first target on
1334: * the first dependency line that is actually a real target
1335: * (i.e. isn't a .USE or .EXEC rule) to be made.
1336: */
1.119 dsl 1337: Lst_ForEach(targets, ParseFindMain, NULL);
1.1 cgd 1338: }
1339:
1.112 christos 1340: out:
1341: if (curTargs)
1342: Lst_Destroy(curTargs, NOFREE);
1.1 cgd 1343: }
1344:
1345: /*-
1346: *---------------------------------------------------------------------
1347: * Parse_IsVar --
1348: * Return TRUE if the passed line is a variable assignment. A variable
1349: * assignment consists of a single word followed by optional whitespace
1350: * followed by either a += or an = operator.
1351: * This function is used both by the Parse_File function and main when
1352: * parsing the command-line arguments.
1353: *
1.84 wiz 1354: * Input:
1355: * line the line to check
1356: *
1.1 cgd 1357: * Results:
1358: * TRUE if it is. FALSE if it ain't
1359: *
1360: * Side Effects:
1361: * none
1362: *---------------------------------------------------------------------
1363: */
1364: Boolean
1.84 wiz 1365: Parse_IsVar(char *line)
1.1 cgd 1366: {
1.84 wiz 1367: Boolean wasSpace = FALSE; /* set TRUE if found a space */
1368: Boolean haveName = FALSE; /* Set TRUE if have a variable name */
1.16 christos 1369: int level = 0;
1370: #define ISEQOPERATOR(c) \
1371: (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!'))
1.1 cgd 1372:
1373: /*
1374: * Skip to variable name
1375: */
1.27 christos 1376: for (;(*line == ' ') || (*line == '\t'); line++)
1.16 christos 1377: continue;
1.1 cgd 1378:
1.16 christos 1379: for (; *line != '=' || level != 0; line++)
1380: switch (*line) {
1381: case '\0':
1.1 cgd 1382: /*
1383: * end-of-line -- can't be a variable assignment.
1384: */
1.16 christos 1385: return FALSE;
1386:
1387: case ' ':
1388: case '\t':
1.1 cgd 1389: /*
1390: * there can be as much white space as desired so long as there is
1.27 christos 1391: * only one word before the operator
1.1 cgd 1392: */
1393: wasSpace = TRUE;
1.16 christos 1394: break;
1395:
1.77 christos 1396: case LPAREN:
1.16 christos 1397: case '{':
1398: level++;
1399: break;
1400:
1401: case '}':
1.77 christos 1402: case RPAREN:
1.16 christos 1403: level--;
1404: break;
1.27 christos 1405:
1.16 christos 1406: default:
1407: if (wasSpace && haveName) {
1408: if (ISEQOPERATOR(*line)) {
1409: /*
1.23 christos 1410: * We must have a finished word
1411: */
1412: if (level != 0)
1413: return FALSE;
1414:
1415: /*
1.16 christos 1416: * When an = operator [+?!:] is found, the next
1.23 christos 1417: * character must be an = or it ain't a valid
1.16 christos 1418: * assignment.
1419: */
1.23 christos 1420: if (line[1] == '=')
1.16 christos 1421: return haveName;
1.23 christos 1422: #ifdef SUNSHCMD
1.16 christos 1423: /*
1.23 christos 1424: * This is a shell command
1.16 christos 1425: */
1.23 christos 1426: if (strncmp(line, ":sh", 3) == 0)
1427: return haveName;
1428: #endif
1.16 christos 1429: }
1.23 christos 1430: /*
1431: * This is the start of another word, so not assignment.
1432: */
1433: return FALSE;
1.16 christos 1434: }
1435: else {
1.27 christos 1436: haveName = TRUE;
1.16 christos 1437: wasSpace = FALSE;
1.1 cgd 1438: }
1.16 christos 1439: break;
1.1 cgd 1440: }
1441:
1.16 christos 1442: return haveName;
1.1 cgd 1443: }
1444:
1445: /*-
1446: *---------------------------------------------------------------------
1447: * Parse_DoVar --
1448: * Take the variable assignment in the passed line and do it in the
1449: * global context.
1450: *
1451: * Note: There is a lexical ambiguity with assignment modifier characters
1452: * in variable names. This routine interprets the character before the =
1453: * as a modifier. Therefore, an assignment like
1454: * C++=/usr/bin/CC
1455: * is interpreted as "C+ +=" instead of "C++ =".
1456: *
1.84 wiz 1457: * Input:
1458: * line a line guaranteed to be a variable assignment.
1459: * This reduces error checks
1460: * ctxt Context in which to do the assignment
1461: *
1.1 cgd 1462: * Results:
1463: * none
1464: *
1465: * Side Effects:
1466: * the variable structure of the given variable name is altered in the
1467: * global context.
1468: *---------------------------------------------------------------------
1469: */
1470: void
1.84 wiz 1471: Parse_DoVar(char *line, GNode *ctxt)
1.1 cgd 1472: {
1.7 cgd 1473: char *cp; /* pointer into line */
1.1 cgd 1474: enum {
1475: VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL
1476: } type; /* Type of assignment */
1.27 christos 1477: char *opc; /* ptr to operator character to
1.1 cgd 1478: * null-terminate the variable name */
1.86 sjg 1479: Boolean freeCp = FALSE; /* TRUE if cp needs to be freed,
1480: * i.e. if any variable expansion was
1481: * performed */
1.1 cgd 1482:
1483: /*
1484: * Skip to variable name
1485: */
1486: while ((*line == ' ') || (*line == '\t')) {
1487: line++;
1488: }
1489:
1490: /*
1491: * Skip to operator character, nulling out whitespace as we go
1492: */
1493: for (cp = line + 1; *cp != '='; cp++) {
1.40 christos 1494: if (isspace ((unsigned char)*cp)) {
1.1 cgd 1495: *cp = '\0';
1496: }
1497: }
1498: opc = cp-1; /* operator is the previous character */
1499: *cp++ = '\0'; /* nuke the = */
1500:
1501: /*
1502: * Check operator type
1503: */
1504: switch (*opc) {
1505: case '+':
1506: type = VAR_APPEND;
1507: *opc = '\0';
1508: break;
1509:
1510: case '?':
1511: /*
1512: * If the variable already has a value, we don't do anything.
1513: */
1514: *opc = '\0';
1515: if (Var_Exists(line, ctxt)) {
1516: return;
1517: } else {
1518: type = VAR_NORMAL;
1519: }
1520: break;
1521:
1522: case ':':
1523: type = VAR_SUBST;
1524: *opc = '\0';
1525: break;
1526:
1527: case '!':
1528: type = VAR_SHELL;
1529: *opc = '\0';
1530: break;
1531:
1532: default:
1.23 christos 1533: #ifdef SUNSHCMD
1.39 christos 1534: while (opc > line && *opc != ':')
1535: opc--;
1.23 christos 1536:
1537: if (strncmp(opc, ":sh", 3) == 0) {
1538: type = VAR_SHELL;
1539: *opc = '\0';
1540: break;
1541: }
1542: #endif
1.1 cgd 1543: type = VAR_NORMAL;
1544: break;
1545: }
1546:
1.40 christos 1547: while (isspace ((unsigned char)*cp)) {
1.1 cgd 1548: cp++;
1549: }
1550:
1551: if (type == VAR_APPEND) {
1.97 christos 1552: Var_Append(line, cp, ctxt);
1.1 cgd 1553: } else if (type == VAR_SUBST) {
1554: /*
1555: * Allow variables in the old value to be undefined, but leave their
1556: * invocation alone -- this is done by forcing oldVars to be false.
1557: * XXX: This can cause recursive variables, but that's not hard to do,
1558: * and this allows someone to do something like
1559: *
1560: * CFLAGS = $(.INCLUDES)
1561: * CFLAGS := -I.. $(CFLAGS)
1562: *
1563: * And not get an error.
1564: */
1565: Boolean oldOldVars = oldVars;
1566:
1567: oldVars = FALSE;
1.42 christos 1568:
1569: /*
1570: * make sure that we set the variable the first time to nothing
1571: * so that it gets substituted!
1572: */
1573: if (!Var_Exists(line, ctxt))
1.70 sjg 1574: Var_Set(line, "", ctxt, 0);
1.42 christos 1575:
1.5 cgd 1576: cp = Var_Subst(NULL, cp, ctxt, FALSE);
1.1 cgd 1577: oldVars = oldOldVars;
1.86 sjg 1578: freeCp = TRUE;
1.1 cgd 1579:
1.70 sjg 1580: Var_Set(line, cp, ctxt, 0);
1.1 cgd 1581: } else if (type == VAR_SHELL) {
1.93 christos 1582: char *res;
1.115 christos 1583: const char *error;
1.5 cgd 1584:
1.23 christos 1585: if (strchr(cp, '$') != NULL) {
1.1 cgd 1586: /*
1587: * There's a dollar sign in the command, so perform variable
1588: * expansion on the whole thing. The resulting string will need
1589: * freeing when we're done, so set freeCmd to TRUE.
1590: */
1.23 christos 1591: cp = Var_Subst(NULL, cp, VAR_CMD, TRUE);
1.86 sjg 1592: freeCp = TRUE;
1.1 cgd 1593: }
1594:
1.115 christos 1595: res = Cmd_Exec(cp, &error);
1.70 sjg 1596: Var_Set(line, res, ctxt, 0);
1.23 christos 1597: free(res);
1.1 cgd 1598:
1.115 christos 1599: if (error)
1600: Parse_Error(PARSE_WARNING, error, cp);
1.1 cgd 1601: } else {
1602: /*
1603: * Normal assignment -- just do it.
1604: */
1.70 sjg 1605: Var_Set(line, cp, ctxt, 0);
1.1 cgd 1606: }
1.69 sjg 1607: if (strcmp(line, MAKEOVERRIDES) == 0)
1.74 tv 1608: Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */
1.85 sjg 1609: else if (strcmp(line, ".CURDIR") == 0) {
1610: /*
1611: * Somone is being (too?) clever...
1612: * Let's pretend they know what they are doing and
1613: * re-initialize the 'cur' Path.
1614: */
1615: Dir_InitCur(cp);
1616: Dir_SetPATH();
1.136 sjg 1617: } else if (strcmp(line, MAKE_JOB_PREFIX) == 0) {
1.135 sjg 1618: Job_SetPrefix();
1.136 sjg 1619: } else if (strcmp(line, MAKE_EXPORTED) == 0) {
1620: Var_Export(cp, 0);
1.85 sjg 1621: }
1.86 sjg 1622: if (freeCp)
1623: free(cp);
1.1 cgd 1624: }
1.23 christos 1625:
1.1 cgd 1626:
1627: /*-
1628: * ParseAddCmd --
1629: * Lst_ForEach function to add a command line to all targets
1630: *
1.84 wiz 1631: * Input:
1632: * gnp the node to which the command is to be added
1633: * cmd the command to add
1634: *
1.1 cgd 1635: * Results:
1636: * Always 0
1637: *
1638: * Side Effects:
1639: * A new element is added to the commands list of the node.
1640: */
1.5 cgd 1641: static int
1.84 wiz 1642: ParseAddCmd(ClientData gnp, ClientData cmd)
1.9 jtc 1643: {
1.105 christos 1644: GNode *gn = (GNode *)gnp;
1.120 dsl 1645:
1646: /* Add to last (ie current) cohort for :: targets */
1.47 mycroft 1647: if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts))
1.103 christos 1648: gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts));
1.120 dsl 1649:
1650: /* if target already supplied, ignore commands */
1.59 christos 1651: if (!(gn->type & OP_HAS_COMMANDS)) {
1652: (void)Lst_AtEnd(gn->commands, cmd);
1653: ParseMark(gn);
1654: } else {
1.60 christos 1655: #ifdef notyet
1656: /* XXX: We cannot do this until we fix the tree */
1.9 jtc 1657: (void)Lst_AtEnd(gn->commands, cmd);
1.97 christos 1658: Parse_Error(PARSE_WARNING,
1.61 christos 1659: "overriding commands for target \"%s\"; "
1660: "previous commands defined at %s: %d ignored",
1.59 christos 1661: gn->name, gn->fname, gn->lineno);
1.60 christos 1662: #else
1.97 christos 1663: Parse_Error(PARSE_WARNING,
1.62 mycroft 1664: "duplicate script for target \"%s\" ignored",
1665: gn->name);
1.97 christos 1666: ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING,
1.62 mycroft 1667: "using previous script for \"%s\" defined here",
1668: gn->name);
1.60 christos 1669: #endif
1.59 christos 1670: }
1.9 jtc 1671: return(0);
1.1 cgd 1672: }
1673:
1674: /*-
1675: *-----------------------------------------------------------------------
1676: * ParseHasCommands --
1677: * Callback procedure for Parse_File when destroying the list of
1678: * targets on the last dependency line. Marks a target as already
1679: * having commands if it does, to keep from having shell commands
1680: * on multiple dependency lines.
1681: *
1.84 wiz 1682: * Input:
1683: * gnp Node to examine
1684: *
1.1 cgd 1685: * Results:
1.9 jtc 1686: * None
1.1 cgd 1687: *
1688: * Side Effects:
1689: * OP_HAS_COMMANDS may be set for the target.
1690: *
1691: *-----------------------------------------------------------------------
1692: */
1.9 jtc 1693: static void
1.84 wiz 1694: ParseHasCommands(ClientData gnp)
1.1 cgd 1695: {
1.105 christos 1696: GNode *gn = (GNode *)gnp;
1.1 cgd 1697: if (!Lst_IsEmpty(gn->commands)) {
1698: gn->type |= OP_HAS_COMMANDS;
1699: }
1700: }
1701:
1702: /*-
1703: *-----------------------------------------------------------------------
1704: * Parse_AddIncludeDir --
1705: * Add a directory to the path searched for included makefiles
1706: * bracketed by double-quotes. Used by functions in main.c
1707: *
1.84 wiz 1708: * Input:
1709: * dir The name of the directory to add
1710: *
1.1 cgd 1711: * Results:
1712: * None.
1713: *
1714: * Side Effects:
1715: * The directory is appended to the list.
1716: *
1717: *-----------------------------------------------------------------------
1718: */
1719: void
1.84 wiz 1720: Parse_AddIncludeDir(char *dir)
1.1 cgd 1721: {
1.103 christos 1722: (void)Dir_AddDir(parseIncPath, dir);
1.1 cgd 1723: }
1724:
1725: /*-
1726: *---------------------------------------------------------------------
1727: * ParseDoInclude --
1728: * Push to another file.
1.27 christos 1729: *
1.38 christos 1730: * The input is the line minus the `.'. A file spec is a string
1.1 cgd 1731: * enclosed in <> or "". The former is looked for only in sysIncPath.
1732: * The latter in . and the directories specified by -I command line
1733: * options
1734: *
1735: * Results:
1736: * None
1737: *
1738: * Side Effects:
1739: * A structure is added to the includes Lst and readProc, lineno,
1740: * fname and curFILE are altered for the new file
1741: *---------------------------------------------------------------------
1742: */
1.123 dsl 1743:
1.1 cgd 1744: static void
1.123 dsl 1745: Parse_include_file(char *file, Boolean isSystem, int silent)
1.1 cgd 1746: {
1747: char *fullname; /* full pathname of file */
1.140 dsl 1748: char *newName;
1749: char *prefEnd, *incdir;
1.125 dsl 1750: int fd;
1.140 dsl 1751: int i;
1.1 cgd 1752:
1753: /*
1754: * Now we know the file's name and its search path, we attempt to
1755: * find the durn thing. A return of NULL indicates the file don't
1756: * exist.
1757: */
1.140 dsl 1758: fullname = file[0] == '/' ? estrdup(file) : NULL;
1.76 reinoud 1759:
1.140 dsl 1760: if (fullname == NULL && !isSystem) {
1.1 cgd 1761: /*
1762: * Include files contained in double-quotes are first searched for
1763: * relative to the including file's location. We don't want to
1764: * cd there, of course, so we just tack on the old file's
1765: * leading path components and call Dir_FindFile to see if
1766: * we can locate the beast.
1767: */
1768:
1.140 dsl 1769: incdir = estrdup(curFile->fname);
1770: prefEnd = strrchr(incdir, '/');
1.105 christos 1771: if (prefEnd != NULL) {
1.1 cgd 1772: *prefEnd = '\0';
1.140 dsl 1773: /* Now do lexical processing of leading "../" on the filename */
1774: for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) {
1775: prefEnd = strrchr(incdir + 1, '/');
1776: if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0)
1777: break;
1778: *prefEnd = '\0';
1779: }
1780: newName = str_concat(incdir, file + i, STR_ADDSLASH);
1.97 christos 1781: fullname = Dir_FindFile(newName, parseIncPath);
1.140 dsl 1782: if (fullname == NULL)
1.1 cgd 1783: fullname = Dir_FindFile(newName, dirSearchPath);
1.103 christos 1784: free(newName);
1.1 cgd 1785: }
1.140 dsl 1786: free(incdir);
1787:
1.142 sjg 1788: if (fullname == NULL) {
1.76 reinoud 1789: /*
1790: * Makefile wasn't found in same directory as included makefile.
1791: * Search for it first on the -I search path,
1792: * then on the .PATH search path, if not found in a -I directory.
1.142 sjg 1793: * If we have a suffix specific path we should use that.
1.76 reinoud 1794: */
1.142 sjg 1795: char *suff;
1796: Lst suffPath = NILLST;
1797:
1.145 ! christos 1798: if ((suff = strrchr(file, '.'))) {
1.142 sjg 1799: suffPath = Suff_GetPath(suff);
1800: if (suffPath != NILLST) {
1801: fullname = Dir_FindFile(file, suffPath);
1802: }
1803: }
1.105 christos 1804: if (fullname == NULL) {
1.142 sjg 1805: fullname = Dir_FindFile(file, parseIncPath);
1806: if (fullname == NULL) {
1807: fullname = Dir_FindFile(file, dirSearchPath);
1808: }
1.76 reinoud 1809: }
1.142 sjg 1810: }
1.1 cgd 1811: }
1812:
1.76 reinoud 1813: /* Looking for a system file or file still not found */
1.105 christos 1814: if (fullname == NULL) {
1.1 cgd 1815: /*
1.76 reinoud 1816: * Look for it on the system path
1.1 cgd 1817: */
1.123 dsl 1818: fullname = Dir_FindFile(file,
1819: Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath);
1.1 cgd 1820: }
1821:
1.105 christos 1822: if (fullname == NULL) {
1.38 christos 1823: if (!silent)
1.97 christos 1824: Parse_Error(PARSE_FATAL, "Could not find %s", file);
1.1 cgd 1825: return;
1826: }
1827:
1.125 dsl 1828: /* Actually open the file... */
1829: fd = open(fullname, O_RDONLY);
1830: if (fd == -1) {
1.38 christos 1831: if (!silent)
1.97 christos 1832: Parse_Error(PARSE_FATAL, "Cannot open %s", fullname);
1.140 dsl 1833: free(fullname);
1.125 dsl 1834: return;
1.123 dsl 1835: }
1.125 dsl 1836:
1837: /* Start reading from this file next */
1838: Parse_SetInput(fullname, 0, fd, NULL);
1.123 dsl 1839: }
1840:
1841: static void
1842: ParseDoInclude(char *line)
1843: {
1844: char endc; /* the character which ends the file spec */
1845: char *cp; /* current position in file spec */
1846: int silent = (*line != 'i') ? 1 : 0;
1847: char *file = &line[7 + silent];
1848:
1849: /* Skip to delimiter character so we know where to look */
1850: while (*file == ' ' || *file == '\t')
1851: file++;
1852:
1853: if (*file != '"' && *file != '<') {
1854: Parse_Error(PARSE_FATAL,
1855: ".include filename must be delimited by '\"' or '<'");
1856: return;
1857: }
1858:
1859: /*
1860: * Set the search path on which to find the include file based on the
1861: * characters which bracket its name. Angle-brackets imply it's
1862: * a system Makefile while double-quotes imply it's a user makefile
1863: */
1864: if (*file == '<') {
1865: endc = '>';
1866: } else {
1867: endc = '"';
1868: }
1869:
1870: /* Skip to matching delimiter */
1871: for (cp = ++file; *cp && *cp != endc; cp++)
1872: continue;
1873:
1874: if (*cp != endc) {
1875: Parse_Error(PARSE_FATAL,
1876: "Unclosed %cinclude filename. '%c' expected",
1877: '.', endc);
1878: return;
1.1 cgd 1879: }
1.123 dsl 1880: *cp = '\0';
1881:
1882: /*
1883: * Substitute for any variables in the file name before trying to
1884: * find the thing.
1885: */
1886: file = Var_Subst(NULL, file, VAR_CMD, FALSE);
1887:
1888: Parse_include_file(file, endc == '>', silent);
1889: free(file);
1.1 cgd 1890: }
1891:
1.5 cgd 1892:
1893: /*-
1894: *---------------------------------------------------------------------
1.44 aidan 1895: * ParseSetParseFile --
1896: * Set the .PARSEDIR and .PARSEFILE variables to the dirname and
1897: * basename of the given filename
1898: *
1899: * Results:
1900: * None
1901: *
1902: * Side Effects:
1903: * The .PARSEDIR and .PARSEFILE variables are overwritten by the
1904: * dirname and basename of the given filename.
1905: *---------------------------------------------------------------------
1906: */
1907: static void
1.122 dsl 1908: ParseSetParseFile(const char *filename)
1.44 aidan 1909: {
1910: char *slash;
1.122 dsl 1911: char *dirname;
1.145 ! christos 1912: int len;
1.44 aidan 1913:
1.78 reinoud 1914: slash = strrchr(filename, '/');
1.122 dsl 1915: if (slash == NULL) {
1.70 sjg 1916: Var_Set(".PARSEDIR", ".", VAR_GLOBAL, 0);
1.78 reinoud 1917: Var_Set(".PARSEFILE", filename, VAR_GLOBAL, 0);
1.44 aidan 1918: } else {
1.122 dsl 1919: len = slash - filename;
1920: dirname = emalloc(len + 1);
1.145 ! christos 1921: memcpy(dirname, filename, len);
1.122 dsl 1922: dirname[len] = 0;
1923: Var_Set(".PARSEDIR", dirname, VAR_GLOBAL, 0);
1.70 sjg 1924: Var_Set(".PARSEFILE", slash+1, VAR_GLOBAL, 0);
1.122 dsl 1925: free(dirname);
1.44 aidan 1926: }
1927: }
1928:
1.137 sjg 1929: /*
1930: * Track the makefiles we read - so makefiles can
1931: * set dependencies on them.
1932: * Avoid adding anything more than once.
1933: */
1934:
1935: static void
1936: ParseTrackInput(const char *name)
1937: {
1938: char *old;
1939: char *fp = NULL;
1.141 christos 1940: size_t name_len = strlen(name);
1.137 sjg 1941:
1942: old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp);
1943: if (old) {
1.139 dsl 1944: /* does it contain name? */
1945: for (; old != NULL; old = strchr(old, ' ')) {
1946: if (*old == ' ')
1947: old++;
1948: if (memcmp(old, name, name_len) == 0
1949: && (old[name_len] == 0 || old[name_len] == ' '))
1950: goto cleanup;
1.137 sjg 1951: }
1952: }
1.139 dsl 1953: Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL);
1.137 sjg 1954: cleanup:
1955: if (fp) {
1956: free(fp);
1957: }
1958: }
1959:
1.44 aidan 1960:
1961: /*-
1962: *---------------------------------------------------------------------
1.125 dsl 1963: * Parse_setInput --
1964: * Start Parsing from the given source
1.27 christos 1965: *
1.5 cgd 1966: * Results:
1967: * None
1968: *
1969: * Side Effects:
1970: * A structure is added to the includes Lst and readProc, lineno,
1.125 dsl 1971: * fname and curFile are altered for the new file
1.5 cgd 1972: *---------------------------------------------------------------------
1973: */
1974: void
1.125 dsl 1975: Parse_SetInput(const char *name, int line, int fd, char *buf)
1.5 cgd 1976: {
1.127 dsl 1977: if (name == NULL)
1978: name = curFile->fname;
1.139 dsl 1979: else
1980: ParseTrackInput(name);
1.127 dsl 1981:
1982: if (DEBUG(PARSE))
1983: fprintf(debug_file, "Parse_SetInput: file %s, line %d, fd %d, buf %p\n",
1984: name, line, fd, buf);
1985:
1.125 dsl 1986: if (fd == -1 && buf == NULL)
1987: /* sanity */
1988: return;
1989:
1.132 dsl 1990: if (curFile != NULL)
1991: /* Save exiting file info */
1992: Lst_AtFront(includes, curFile);
1.5 cgd 1993:
1.125 dsl 1994: /* Allocate and fill in new structure */
1995: curFile = emalloc(sizeof *curFile);
1996:
1997: /*
1998: * Once the previous state has been saved, we can get down to reading
1999: * the new file. We set up the name of the file to be the absolute
2000: * name of the include file so error messages refer to the right
2001: * place.
2002: */
2003: curFile->fname = name;
2004: curFile->lineno = line;
2005: curFile->fd = fd;
1.132 dsl 2006: curFile->cond_depth = Cond_save_depth();
1.27 christos 2007:
1.125 dsl 2008: ParseSetParseFile(name);
2009:
2010: if (buf == NULL) {
2011: /*
2012: * Allocate a 32k data buffer (as stdio seems to).
2013: * Set pointers so that first ParseReadc has to do a file read.
2014: */
1.127 dsl 2015: buf = emalloc(IFILE_BUFLEN);
1.125 dsl 2016: buf[0] = 0;
2017: curFile->P_str = buf;
2018: curFile->P_ptr = buf;
2019: curFile->P_end = buf;
1.127 dsl 2020: curFile->P_buflen = IFILE_BUFLEN;
1.125 dsl 2021: } else {
2022: /* Start reading from the start of the buffer */
2023: curFile->P_str = buf;
2024: curFile->P_ptr = buf;
2025: curFile->P_end = NULL;
2026: }
1.5 cgd 2027:
2028: }
2029:
2030: #ifdef SYSVINCLUDE
2031: /*-
2032: *---------------------------------------------------------------------
2033: * ParseTraditionalInclude --
2034: * Push to another file.
1.27 christos 2035: *
1.38 christos 2036: * The input is the current line. The file name(s) are
2037: * following the "include".
1.5 cgd 2038: *
2039: * Results:
2040: * None
2041: *
2042: * Side Effects:
2043: * A structure is added to the includes Lst and readProc, lineno,
2044: * fname and curFILE are altered for the new file
2045: *---------------------------------------------------------------------
2046: */
2047: static void
1.84 wiz 2048: ParseTraditionalInclude(char *line)
1.5 cgd 2049: {
2050: char *cp; /* current position in file spec */
1.38 christos 2051: int done = 0;
2052: int silent = (line[0] != 'i') ? 1 : 0;
2053: char *file = &line[silent + 7];
1.123 dsl 2054: char *all_files;
1.5 cgd 2055:
1.111 ginsbach 2056: if (DEBUG(PARSE)) {
1.116 dsl 2057: fprintf(debug_file, "ParseTraditionalInclude: %s\n", file);
1.111 ginsbach 2058: }
2059:
1.5 cgd 2060: /*
2061: * Skip over whitespace
2062: */
1.38 christos 2063: while (isspace((unsigned char)*file))
1.5 cgd 2064: file++;
2065:
1.111 ginsbach 2066: /*
2067: * Substitute for any variables in the file name before trying to
2068: * find the thing.
2069: */
1.123 dsl 2070: all_files = Var_Subst(NULL, file, VAR_CMD, FALSE);
1.111 ginsbach 2071:
1.5 cgd 2072: if (*file == '\0') {
1.97 christos 2073: Parse_Error(PARSE_FATAL,
1.5 cgd 2074: "Filename missing from \"include\"");
2075: return;
2076: }
2077:
1.123 dsl 2078: for (file = all_files; !done; file = cp + 1) {
2079: /* Skip to end of line or next whitespace */
1.38 christos 2080: for (cp = file; *cp && !isspace((unsigned char) *cp); cp++)
2081: continue;
2082:
2083: if (*cp)
2084: *cp = '\0';
2085: else
2086: done = 1;
2087:
1.123 dsl 2088: Parse_include_file(file, FALSE, silent);
1.5 cgd 2089: }
1.123 dsl 2090: free(all_files);
1.5 cgd 2091: }
2092: #endif
2093:
1.1 cgd 2094: /*-
2095: *---------------------------------------------------------------------
2096: * ParseEOF --
2097: * Called when EOF is reached in the current file. If we were reading
2098: * an include file, the includes stack is popped and things set up
2099: * to go back to reading the previous file at the previous location.
2100: *
2101: * Results:
2102: * CONTINUE if there's more to do. DONE if not.
2103: *
2104: * Side Effects:
2105: * The old curFILE, is closed. The includes list is shortened.
2106: * lineno, curFILE, and fname are changed if CONTINUE is returned.
2107: *---------------------------------------------------------------------
2108: */
2109: static int
1.123 dsl 2110: ParseEOF(void)
1.1 cgd 2111: {
1.132 dsl 2112: /* Ensure the makefile (or loop) didn't have mismatched conditionals */
2113: Cond_restore_depth(curFile->cond_depth);
1.131 dsl 2114:
1.125 dsl 2115: /* Dispose of curFile info */
2116: /* Leak curFile->fname because all the gnodes have pointers to it */
2117: if (curFile->fd != -1)
2118: close(curFile->fd);
2119: free(curFile->P_str);
2120: free(curFile);
2121:
1.132 dsl 2122: curFile = Lst_DeQueue(includes);
1.1 cgd 2123:
1.132 dsl 2124: if (curFile == (IFile *)NIL) {
1.125 dsl 2125: /* We've run out of input */
1.44 aidan 2126: Var_Delete(".PARSEDIR", VAR_GLOBAL);
2127: Var_Delete(".PARSEFILE", VAR_GLOBAL);
1.125 dsl 2128: return DONE;
1.1 cgd 2129: }
2130:
1.127 dsl 2131: if (DEBUG(PARSE))
1.145 ! christos 2132: fprintf(debug_file, "ParseEOF: returning to file %s, line %d, fd %d\n",
1.127 dsl 2133: curFile->fname, curFile->lineno, curFile->fd);
2134:
1.125 dsl 2135: /* Restore the PARSEDIR/PARSEFILE variables */
2136: ParseSetParseFile(curFile->fname);
1.1 cgd 2137: return (CONTINUE);
2138: }
2139:
1.127 dsl 2140: #define PARSE_RAW 1
2141: #define PARSE_SKIP 2
2142:
2143: static char *
2144: ParseGetLine(int flags, int *length)
1.5 cgd 2145: {
1.125 dsl 2146: IFile *cf = curFile;
1.127 dsl 2147: char *ptr;
1.125 dsl 2148: char ch;
1.127 dsl 2149: char *line;
2150: char *line_end;
2151: char *escaped;
2152: char *comment;
2153: char *tp;
1.145 ! christos 2154: int len, dist;
1.125 dsl 2155:
1.127 dsl 2156: /* Loop through blank lines and comment lines */
1.125 dsl 2157: for (;;) {
1.127 dsl 2158: cf->lineno++;
2159: line = cf->P_ptr;
2160: ptr = line;
2161: line_end = line;
2162: escaped = NULL;
2163: comment = NULL;
2164: for (;;) {
2165: ch = *ptr;
2166: if (ch == 0 || (ch == '\\' && ptr[1] == 0)) {
2167: if (cf->P_end == NULL)
2168: /* End of string (aka for loop) data */
2169: break;
2170: /* End of data read from file, read more data */
2171: if (ptr != cf->P_end && (ch != '\\' || ptr + 1 != cf->P_end)) {
2172: Parse_Error(PARSE_FATAL, "Zero byte read from file");
2173: return NULL;
2174: }
2175: /* Move existing data to (near) start of file buffer */
2176: len = cf->P_end - cf->P_ptr;
2177: tp = cf->P_str + 32;
1.145 ! christos 2178: memmove(tp, cf->P_ptr, len);
1.127 dsl 2179: dist = cf->P_ptr - tp;
2180: /* Update all pointers to reflect moved data */
2181: ptr -= dist;
2182: line -= dist;
2183: line_end -= dist;
2184: if (escaped)
2185: escaped -= dist;
2186: if (comment)
2187: comment -= dist;
2188: cf->P_ptr = tp;
2189: tp += len;
2190: cf->P_end = tp;
2191: /* Try to read more data from file into buffer space */
2192: len = cf->P_str + cf->P_buflen - tp - 32;
2193: if (len <= 0) {
2194: /* We need a bigger buffer to hold this line */
2195: tp = erealloc(cf->P_str, cf->P_buflen + IFILE_BUFLEN);
2196: cf->P_end = cf->P_end - cf->P_str + tp;
2197: ptr = ptr - cf->P_str + tp;
2198: line = line - cf->P_str + tp;
2199: line_end = line_end - cf->P_str + tp;
2200: if (escaped)
2201: escaped = escaped - cf->P_str + tp;
2202: if (comment)
2203: comment = comment - cf->P_str + tp;
2204: cf->P_str = tp;
2205: tp = cf->P_end;
2206: len += IFILE_BUFLEN;
1.143 dsl 2207: cf->P_buflen += IFILE_BUFLEN;
1.127 dsl 2208: }
1.145 ! christos 2209: len = read(cf->fd, tp, len);
1.127 dsl 2210: if (len <= 0) {
2211: if (len < 0) {
2212: Parse_Error(PARSE_FATAL, "Makefile read error: %s",
2213: strerror(errno));
2214: return NULL;
2215: }
2216: /* End of file */
2217: break;
2218: }
2219: /* 0 terminate the data, and update end pointer */
2220: tp += len;
2221: cf->P_end = tp;
2222: *tp = 0;
2223: /* Process newly read characters */
2224: continue;
2225: }
2226:
2227: if (ch == '\\') {
2228: /* Don't treat next character as special, remember first one */
2229: if (escaped == NULL)
2230: escaped = ptr;
2231: if (ptr[1] == '\n')
2232: cf->lineno++;
2233: ptr += 2;
2234: line_end = ptr;
2235: continue;
2236: }
2237: if (ch == '#' && comment == NULL) {
2238: /* Remember first '#' for comment stripping */
2239: comment = line_end;
2240: }
2241: ptr++;
1.125 dsl 2242: if (ch == '\n')
1.127 dsl 2243: break;
2244: if (!isspace((unsigned char)ch))
2245: /* We are not interested in trailing whitespace */
2246: line_end = ptr;
2247: }
1.125 dsl 2248:
1.127 dsl 2249: /* Save next 'to be processed' location */
2250: cf->P_ptr = ptr;
2251:
2252: /* Check we have a non-comment, non-blank line */
2253: if (line_end == line || comment == line) {
2254: if (ch == 0)
2255: /* At end of file */
2256: return NULL;
2257: /* Parse another line */
1.125 dsl 2258: continue;
1.127 dsl 2259: }
1.125 dsl 2260:
1.127 dsl 2261: /* We now have a line of data */
2262: *line_end = 0;
1.27 christos 2263:
1.127 dsl 2264: if (flags & PARSE_RAW) {
2265: /* Leave '\' (etc) in line buffer (eg 'for' lines) */
2266: *length = line_end - line;
2267: return line;
2268: }
1.5 cgd 2269:
1.127 dsl 2270: if (flags & PARSE_SKIP) {
2271: /* Completely ignore non-directives */
2272: if (line[0] != '.')
2273: continue;
2274: /* We could do more of the .else/.elif/.endif checks here */
2275: }
2276: break;
2277: }
1.5 cgd 2278:
1.127 dsl 2279: /* Brutally ignore anything after a non-escaped '#' in non-commands */
2280: if (comment != NULL && line[0] != '\t') {
2281: line_end = comment;
2282: *line_end = 0;
2283: }
1.5 cgd 2284:
1.127 dsl 2285: /* If we didn't see a '\\' then the in-situ data is fine */
2286: if (escaped == NULL) {
2287: *length = line_end - line;
2288: return line;
2289: }
1.5 cgd 2290:
1.127 dsl 2291: /* Remove escapes from '\n' and '#' */
2292: tp = ptr = escaped;
2293: escaped = line;
2294: for (; ; *tp++ = ch) {
2295: ch = *ptr++;
2296: if (ch != '\\') {
2297: if (ch == 0)
2298: break;
2299: continue;
2300: }
1.5 cgd 2301:
1.127 dsl 2302: ch = *ptr++;
2303: if (ch == 0) {
2304: /* Delete '\\' at end of buffer */
2305: tp--;
2306: break;
2307: }
1.27 christos 2308:
1.130 dsl 2309: if (ch == '#' && line[0] != '\t')
2310: /* Delete '\\' from before '#' on non-command lines */
1.127 dsl 2311: continue;
1.27 christos 2312:
1.127 dsl 2313: if (ch != '\n') {
2314: /* Leave '\\' in buffer for later */
2315: *tp++ = '\\';
2316: /* Make sure we don't delete an escaped ' ' from the line end */
2317: escaped = tp + 1;
2318: continue;
2319: }
1.27 christos 2320:
1.128 dsl 2321: /* Escaped '\n' replace following whitespace with a single ' ' */
1.127 dsl 2322: while (ptr[0] == ' ' || ptr[0] == '\t')
2323: ptr++;
2324: ch = ' ';
2325: }
1.27 christos 2326:
1.127 dsl 2327: /* Delete any trailing spaces - eg from empty continuations */
2328: while (tp > escaped && isspace((unsigned char)tp[-1]))
2329: tp--;
1.27 christos 2330:
1.127 dsl 2331: *tp = 0;
2332: *length = tp - line;
1.5 cgd 2333: return line;
2334: }
1.1 cgd 2335:
2336: /*-
2337: *---------------------------------------------------------------------
2338: * ParseReadLine --
2339: * Read an entire line from the input file. Called only by Parse_File.
2340: *
2341: * Results:
2342: * A line w/o its newline
2343: *
2344: * Side Effects:
2345: * Only those associated with reading a character
2346: *---------------------------------------------------------------------
2347: */
2348: static char *
1.84 wiz 2349: ParseReadLine(void)
1.1 cgd 2350: {
1.9 jtc 2351: char *line; /* Result */
1.1 cgd 2352: int lineLength; /* Length of result */
1.95 enami 2353: int lineno; /* Saved line # */
1.1 cgd 2354:
1.5 cgd 2355: for (;;) {
1.127 dsl 2356: line = ParseGetLine(0, &lineLength);
2357: if (line == NULL)
2358: return NULL;
1.1 cgd 2359:
1.127 dsl 2360: if (line[0] != '.')
2361: return line;
1.121 dsl 2362:
2363: /*
1.127 dsl 2364: * The line might be a conditional. Ask the conditional module
2365: * about it and act accordingly
1.121 dsl 2366: */
1.127 dsl 2367: switch (Cond_Eval(line)) {
2368: case COND_SKIP:
2369: /* Skip to next conditional that evaluates to COND_PARSE. */
2370: do {
2371: line = ParseGetLine(PARSE_SKIP, &lineLength);
2372: } while (line && Cond_Eval(line) != COND_PARSE);
2373: if (line == NULL)
1.121 dsl 2374: break;
1.127 dsl 2375: continue;
2376: case COND_PARSE:
2377: continue;
2378: case COND_INVALID: /* Not a conditional line */
2379: if (!For_Eval(line))
1.1 cgd 2380: break;
1.127 dsl 2381: lineno = curFile->lineno;
2382: /* Skip after the matching end */
1.121 dsl 2383: do {
1.127 dsl 2384: line = ParseGetLine(PARSE_RAW, &lineLength);
1.121 dsl 2385: if (line == NULL) {
2386: Parse_Error(PARSE_FATAL,
2387: "Unexpected end of file in for loop.\n");
1.5 cgd 2388: break;
1.121 dsl 2389: }
1.127 dsl 2390: } while (For_Eval(line));
2391: /* Stash each iteration as a new 'input file' */
2392: For_Run(lineno);
2393: /* Read next line from for-loop buffer */
2394: continue;
1.1 cgd 2395: }
1.127 dsl 2396: return (line);
1.1 cgd 2397: }
2398: }
2399:
2400: /*-
2401: *-----------------------------------------------------------------------
2402: * ParseFinishLine --
2403: * Handle the end of a dependency group.
2404: *
2405: * Results:
2406: * Nothing.
2407: *
2408: * Side Effects:
2409: * inLine set FALSE. 'targets' list destroyed.
2410: *
2411: *-----------------------------------------------------------------------
2412: */
2413: static void
1.84 wiz 2414: ParseFinishLine(void)
1.1 cgd 2415: {
2416: if (inLine) {
1.119 dsl 2417: Lst_ForEach(targets, Suff_EndTransform, NULL);
1.97 christos 2418: Lst_Destroy(targets, ParseHasCommands);
1.9 jtc 2419: targets = NULL;
1.1 cgd 2420: inLine = FALSE;
2421: }
2422: }
1.27 christos 2423:
1.1 cgd 2424:
2425: /*-
2426: *---------------------------------------------------------------------
2427: * Parse_File --
2428: * Parse a file into its component parts, incorporating it into the
2429: * current dependency graph. This is the main function and controls
2430: * almost every other function in this module
2431: *
1.84 wiz 2432: * Input:
2433: * name the name of the file being read
1.125 dsl 2434: * fd Open file to makefile to parse
1.84 wiz 2435: *
1.1 cgd 2436: * Results:
2437: * None
2438: *
2439: * Side Effects:
1.125 dsl 2440: * closes fd.
1.1 cgd 2441: * Loads. Nodes are added to the list of all targets, nodes and links
2442: * are added to the dependency graph. etc. etc. etc.
2443: *---------------------------------------------------------------------
2444: */
2445: void
1.125 dsl 2446: Parse_File(const char *name, int fd)
1.1 cgd 2447: {
1.117 dsl 2448: char *cp; /* pointer into the line */
2449: char *line; /* the line we're working on */
1.1 cgd 2450:
2451: inLine = FALSE;
2452: fatals = 0;
1.44 aidan 2453:
1.125 dsl 2454: Parse_SetInput(name, 0, fd, NULL);
1.1 cgd 2455:
2456: do {
1.127 dsl 2457: for (; (line = ParseReadLine()) != NULL; ) {
1.120 dsl 2458: if (DEBUG(PARSE))
1.145 ! christos 2459: fprintf(debug_file, "ParseReadLine (%d): '%s'\n",
! 2460: curFile->lineno, line);
1.1 cgd 2461: if (*line == '.') {
2462: /*
2463: * Lines that begin with the special character are either
2464: * include or undef directives.
2465: */
1.127 dsl 2466: for (cp = line + 1; isspace((unsigned char)*cp); cp++) {
1.1 cgd 2467: continue;
2468: }
1.38 christos 2469: if (strncmp(cp, "include", 7) == 0 ||
1.127 dsl 2470: ((cp[0] == 's' || cp[0] == '-') &&
2471: strncmp(&cp[1], "include", 7) == 0)) {
1.97 christos 2472: ParseDoInclude(cp);
1.117 dsl 2473: continue;
2474: }
2475: if (strncmp(cp, "undef", 5) == 0) {
1.1 cgd 2476: char *cp2;
1.127 dsl 2477: for (cp += 5; isspace((unsigned char) *cp); cp++)
1.1 cgd 2478: continue;
1.9 jtc 2479: for (cp2 = cp; !isspace((unsigned char) *cp2) &&
1.127 dsl 2480: (*cp2 != '\0'); cp2++)
1.1 cgd 2481: continue;
2482: *cp2 = '\0';
2483: Var_Delete(cp, VAR_GLOBAL);
1.117 dsl 2484: continue;
1.136 sjg 2485: } else if (strncmp(cp, "export", 6) == 0) {
2486: for (cp += 6; isspace((unsigned char) *cp); cp++)
2487: continue;
2488: Var_Export(cp, 1);
2489: continue;
1.1 cgd 2490: }
2491: }
1.27 christos 2492:
1.6 jtc 2493: if (*line == '\t') {
1.1 cgd 2494: /*
1.6 jtc 2495: * If a line starts with a tab, it can only hope to be
2496: * a creation command.
1.1 cgd 2497: */
1.133 dsl 2498: cp = line + 1;
1.127 dsl 2499: shellCommand:
1.133 dsl 2500: for (; isspace ((unsigned char)*cp); cp++) {
1.1 cgd 2501: continue;
2502: }
2503: if (*cp) {
1.117 dsl 2504: if (!inLine)
1.97 christos 2505: Parse_Error(PARSE_FATAL,
1.25 christos 2506: "Unassociated shell command \"%s\"",
1.1 cgd 2507: cp);
1.117 dsl 2508: /*
2509: * So long as it's not a blank line and we're actually
2510: * in a dependency spec, add the command to the list of
2511: * commands of all targets in the dependency spec
2512: */
1.129 christos 2513: if (targets) {
2514: cp = estrdup(cp);
2515: Lst_ForEach(targets, ParseAddCmd, cp);
1.117 dsl 2516: #ifdef CLEANUP
1.129 christos 2517: Lst_AtEnd(targCmds, cp);
1.117 dsl 2518: #endif
1.129 christos 2519: }
1.1 cgd 2520: }
1.117 dsl 2521: continue;
2522: }
2523:
1.5 cgd 2524: #ifdef SYSVINCLUDE
1.117 dsl 2525: if (((strncmp(line, "include", 7) == 0 &&
2526: isspace((unsigned char) line[7])) ||
2527: ((line[0] == 's' || line[0] == '-') &&
2528: strncmp(&line[1], "include", 7) == 0 &&
2529: isspace((unsigned char) line[8]))) &&
2530: strchr(line, ':') == NULL) {
1.5 cgd 2531: /*
2532: * It's an S3/S5-style "include".
2533: */
1.97 christos 2534: ParseTraditionalInclude(line);
1.117 dsl 2535: continue;
2536: }
1.5 cgd 2537: #endif
1.117 dsl 2538: if (Parse_IsVar(line)) {
1.1 cgd 2539: ParseFinishLine();
1.97 christos 2540: Parse_DoVar(line, VAR_GLOBAL);
1.117 dsl 2541: continue;
2542: }
2543:
1.127 dsl 2544: #ifndef POSIX
1.117 dsl 2545: /*
2546: * To make life easier on novices, if the line is indented we
2547: * first make sure the line has a dependency operator in it.
2548: * If it doesn't have an operator and we're in a dependency
2549: * line's script, we assume it's actually a shell command
2550: * and add it to the current list of targets.
2551: */
2552: cp = line;
2553: if (isspace((unsigned char) line[0])) {
1.127 dsl 2554: while ((*cp != '\0') && isspace((unsigned char) *cp))
1.117 dsl 2555: cp++;
2556: while (*cp && (ParseIsEscaped(line, cp) ||
1.77 christos 2557: (*cp != ':') && (*cp != '!'))) {
1.117 dsl 2558: cp++;
2559: }
1.127 dsl 2560: if (*cp == '\0') {
2561: if (inLine) {
2562: Parse_Error(PARSE_WARNING,
2563: "Shell command needs a leading tab");
2564: goto shellCommand;
2565: }
2566: }
2567: }
1.11 mycroft 2568: #endif
1.127 dsl 2569: ParseFinishLine();
1.27 christos 2570:
1.127 dsl 2571: /*
2572: * For some reason - probably to make the parser impossible -
2573: * a ';' can be used to separate commands from dependencies.
2574: * No attempt is made to avoid ';' inside substitution patterns.
2575: */
2576: for (cp = line; *cp != 0; cp++) {
2577: if (*cp == '\\' && cp[1] != 0) {
2578: cp++;
2579: continue;
1.117 dsl 2580: }
1.127 dsl 2581: if (*cp == ';')
2582: break;
1.117 dsl 2583: }
1.127 dsl 2584: if (*cp != 0)
2585: /* Terminate the dependency list at the ';' */
1.133 dsl 2586: *cp++ = 0;
1.127 dsl 2587: else
2588: cp = NULL;
1.1 cgd 2589:
1.127 dsl 2590: /*
2591: * We now know it's a dependency line so it needs to have all
2592: * variables expanded before being parsed. Tell the variable
2593: * module to complain if some variable is undefined...
2594: */
2595: line = Var_Subst(NULL, line, VAR_CMD, TRUE);
1.27 christos 2596:
1.117 dsl 2597: /*
2598: * Need a non-circular list for the target nodes
2599: */
2600: if (targets)
2601: Lst_Destroy(targets, NOFREE);
1.9 jtc 2602:
1.117 dsl 2603: targets = Lst_Init(FALSE);
2604: inLine = TRUE;
1.27 christos 2605:
1.117 dsl 2606: ParseDoDependency(line);
1.127 dsl 2607: free(line);
2608:
2609: /* If there were commands after a ';', add them now */
2610: if (cp != NULL) {
2611: goto shellCommand;
2612: }
1.1 cgd 2613: }
2614: /*
1.27 christos 2615: * Reached EOF, but it may be just EOF of an include file...
1.1 cgd 2616: */
1.123 dsl 2617: } while (ParseEOF() == CONTINUE);
1.1 cgd 2618:
2619: if (fatals) {
1.63 christos 2620: (void)fprintf(stderr,
2621: "%s: Fatal errors encountered -- cannot continue\n",
2622: progname);
1.64 sjg 2623: PrintOnError(NULL);
1.103 christos 2624: exit(1);
1.1 cgd 2625: }
2626: }
2627:
2628: /*-
2629: *---------------------------------------------------------------------
2630: * Parse_Init --
2631: * initialize the parsing module
2632: *
2633: * Results:
2634: * none
2635: *
2636: * Side Effects:
2637: * the parseIncPath list is initialized...
2638: *---------------------------------------------------------------------
2639: */
1.5 cgd 2640: void
1.84 wiz 2641: Parse_Init(void)
1.1 cgd 2642: {
2643: mainNode = NILGNODE;
1.97 christos 2644: parseIncPath = Lst_Init(FALSE);
2645: sysIncPath = Lst_Init(FALSE);
2646: defIncPath = Lst_Init(FALSE);
2647: includes = Lst_Init(FALSE);
1.45 mycroft 2648: #ifdef CLEANUP
1.97 christos 2649: targCmds = Lst_Init(FALSE);
1.45 mycroft 2650: #endif
1.1 cgd 2651: }
1.9 jtc 2652:
2653: void
1.84 wiz 2654: Parse_End(void)
1.9 jtc 2655: {
1.45 mycroft 2656: #ifdef CLEANUP
1.106 christos 2657: Lst_Destroy(targCmds, (FreeProc *)free);
1.9 jtc 2658: if (targets)
2659: Lst_Destroy(targets, NOFREE);
1.74 tv 2660: Lst_Destroy(defIncPath, Dir_Destroy);
1.9 jtc 2661: Lst_Destroy(sysIncPath, Dir_Destroy);
2662: Lst_Destroy(parseIncPath, Dir_Destroy);
2663: Lst_Destroy(includes, NOFREE); /* Should be empty now */
1.45 mycroft 2664: #endif
1.9 jtc 2665: }
1.27 christos 2666:
1.1 cgd 2667:
2668: /*-
2669: *-----------------------------------------------------------------------
2670: * Parse_MainName --
2671: * Return a Lst of the main target to create for main()'s sake. If
2672: * no such target exists, we Punt with an obnoxious error message.
2673: *
2674: * Results:
2675: * A Lst of the single node to create.
2676: *
2677: * Side Effects:
2678: * None.
2679: *
2680: *-----------------------------------------------------------------------
2681: */
2682: Lst
1.84 wiz 2683: Parse_MainName(void)
1.1 cgd 2684: {
1.37 fair 2685: Lst mainList; /* result list */
1.1 cgd 2686:
1.97 christos 2687: mainList = Lst_Init(FALSE);
1.1 cgd 2688:
2689: if (mainNode == NILGNODE) {
1.97 christos 2690: Punt("no target to make.");
1.1 cgd 2691: /*NOTREACHED*/
2692: } else if (mainNode->type & OP_DOUBLEDEP) {
1.119 dsl 2693: (void)Lst_AtEnd(mainList, mainNode);
1.37 fair 2694: Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW);
1.1 cgd 2695: }
1.5 cgd 2696: else
1.119 dsl 2697: (void)Lst_AtEnd(mainList, mainNode);
1.81 pk 2698: Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL);
1.37 fair 2699: return (mainList);
1.59 christos 2700: }
2701:
2702: /*-
2703: *-----------------------------------------------------------------------
2704: * ParseMark --
2705: * Add the filename and lineno to the GNode so that we remember
2706: * where it was first defined.
2707: *
2708: * Side Effects:
2709: * None.
2710: *
2711: *-----------------------------------------------------------------------
2712: */
2713: static void
1.84 wiz 2714: ParseMark(GNode *gn)
1.59 christos 2715: {
1.125 dsl 2716: gn->fname = curFile->fname;
2717: gn->lineno = curFile->lineno;
1.1 cgd 2718: }
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