Annotation of src/usr.bin/make/parse.c, Revision 1.157
1.157 ! dsl 1: /* $NetBSD: parse.c,v 1.156 2009/01/16 20:50:24 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
1.157 ! dsl 72: static char rcsid[] = "$NetBSD: parse.c,v 1.156 2009/01/16 20:50:24 dsl Exp $";
1.36 lukem 73: #else
1.34 christos 74: #include <sys/cdefs.h>
1.1 cgd 75: #ifndef lint
1.15 christos 76: #if 0
1.27 christos 77: static char sccsid[] = "@(#)parse.c 8.3 (Berkeley) 3/19/94";
1.15 christos 78: #else
1.157 ! dsl 79: __RCSID("$NetBSD: parse.c,v 1.156 2009/01/16 20:50:24 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 {
1.155 dsl 158: const char *fname; /* name of file */
159: int lineno; /* current line number in file */
160: int first_lineno; /* line number of start of text */
161: int fd; /* the open file */
162: int cond_depth; /* 'if' nesting when file opened */
1.123 dsl 163: char *P_str; /* point to base of string buffer */
164: char *P_ptr; /* point to next char of string buffer */
1.125 dsl 165: char *P_end; /* point to the end of string buffer */
1.145 christos 166: int P_buflen; /* current size of file buffer */
1.155 dsl 167: char *(*nextbuf)(void *); /* Function to get more data */
168: void *nextbuf_arg; /* Opaque arg for nextbuf() */
1.5 cgd 169: } IFile;
1.1 cgd 170:
1.127 dsl 171: #define IFILE_BUFLEN 0x8000
1.125 dsl 172: static IFile *curFile;
1.82 reinoud 173:
174:
175: /*
176: * Definitions for handling #include specifications
177: */
178:
1.123 dsl 179: static Lst includes; /* stack of IFiles generated by .includes */
1.1 cgd 180: Lst parseIncPath; /* list of directories for "..." includes */
181: Lst sysIncPath; /* list of directories for <...> includes */
1.74 tv 182: Lst defIncPath; /* default directories for <...> includes */
1.1 cgd 183:
184: /*-
185: * specType contains the SPECial TYPE of the current target. It is
186: * Not if the target is unspecial. If it *is* special, however, the children
187: * are linked as children of the parent but not vice versa. This variable is
188: * set in ParseDoDependency
189: */
190: typedef enum {
191: Begin, /* .BEGIN */
192: Default, /* .DEFAULT */
193: End, /* .END */
194: Ignore, /* .IGNORE */
195: Includes, /* .INCLUDES */
196: Interrupt, /* .INTERRUPT */
197: Libs, /* .LIBS */
198: MFlags, /* .MFLAGS or .MAKEFLAGS */
199: Main, /* .MAIN and we don't have anything user-specified to
200: * make */
1.5 cgd 201: NoExport, /* .NOEXPORT */
1.32 gwr 202: NoPath, /* .NOPATH */
1.1 cgd 203: Not, /* Not special */
1.75 tv 204: NotParallel, /* .NOTPARALLEL */
1.1 cgd 205: Null, /* .NULL */
1.75 tv 206: ExObjdir, /* .OBJDIR */
1.1 cgd 207: Order, /* .ORDER */
1.18 christos 208: Parallel, /* .PARALLEL */
1.5 cgd 209: ExPath, /* .PATH */
1.22 christos 210: Phony, /* .PHONY */
1.48 sjg 211: #ifdef POSIX
212: Posix, /* .POSIX */
213: #endif
1.1 cgd 214: Precious, /* .PRECIOUS */
1.5 cgd 215: ExShell, /* .SHELL */
1.1 cgd 216: Silent, /* .SILENT */
217: SingleShell, /* .SINGLESHELL */
218: Suffixes, /* .SUFFIXES */
1.18 christos 219: Wait, /* .WAIT */
1.5 cgd 220: Attribute /* Generic attribute */
1.1 cgd 221: } ParseSpecial;
222:
1.5 cgd 223: static ParseSpecial specType;
1.1 cgd 224:
1.77 christos 225: #define LPAREN '('
226: #define RPAREN ')'
1.1 cgd 227: /*
1.152 dsl 228: * Predecessor node for handling .ORDER. Initialized to NULL when .ORDER
1.1 cgd 229: * seen, then set to each successive source on the line.
230: */
231: static GNode *predecessor;
232:
233: /*
234: * The parseKeywords table is searched using binary search when deciding
235: * if a target or source is special. The 'spec' field is the ParseSpecial
236: * type of the keyword ("Not" if the keyword isn't special as a target) while
237: * the 'op' field is the operator to apply to the list of targets if the
238: * keyword is used as a source ("0" if the keyword isn't special as a source)
239: */
240: static struct {
1.93 christos 241: const char *name; /* Name of keyword */
1.1 cgd 242: ParseSpecial spec; /* Type when used as a target */
243: int op; /* Operator when used as a source */
244: } parseKeywords[] = {
245: { ".BEGIN", Begin, 0 },
246: { ".DEFAULT", Default, 0 },
247: { ".END", End, 0 },
248: { ".EXEC", Attribute, OP_EXEC },
249: { ".IGNORE", Ignore, OP_IGNORE },
250: { ".INCLUDES", Includes, 0 },
251: { ".INTERRUPT", Interrupt, 0 },
252: { ".INVISIBLE", Attribute, OP_INVISIBLE },
253: { ".JOIN", Attribute, OP_JOIN },
254: { ".LIBS", Libs, 0 },
1.29 christos 255: { ".MADE", Attribute, OP_MADE },
1.1 cgd 256: { ".MAIN", Main, 0 },
257: { ".MAKE", Attribute, OP_MAKE },
258: { ".MAKEFLAGS", MFlags, 0 },
259: { ".MFLAGS", MFlags, 0 },
1.32 gwr 260: { ".NOPATH", NoPath, OP_NOPATH },
1.1 cgd 261: { ".NOTMAIN", Attribute, OP_NOTMAIN },
262: { ".NOTPARALLEL", NotParallel, 0 },
1.18 christos 263: { ".NO_PARALLEL", NotParallel, 0 },
1.1 cgd 264: { ".NULL", Null, 0 },
1.75 tv 265: { ".OBJDIR", ExObjdir, 0 },
1.14 ws 266: { ".OPTIONAL", Attribute, OP_OPTIONAL },
1.1 cgd 267: { ".ORDER", Order, 0 },
1.18 christos 268: { ".PARALLEL", Parallel, 0 },
1.5 cgd 269: { ".PATH", ExPath, 0 },
1.22 christos 270: { ".PHONY", Phony, OP_PHONY },
1.48 sjg 271: #ifdef POSIX
272: { ".POSIX", Posix, 0 },
273: #endif
1.1 cgd 274: { ".PRECIOUS", Precious, OP_PRECIOUS },
275: { ".RECURSIVE", Attribute, OP_MAKE },
1.5 cgd 276: { ".SHELL", ExShell, 0 },
1.1 cgd 277: { ".SILENT", Silent, OP_SILENT },
278: { ".SINGLESHELL", SingleShell, 0 },
279: { ".SUFFIXES", Suffixes, 0 },
280: { ".USE", Attribute, OP_USE },
1.71 christos 281: { ".USEBEFORE", Attribute, OP_USEBEFORE },
1.18 christos 282: { ".WAIT", Wait, 0 },
1.1 cgd 283: };
284:
1.84 wiz 285: static int ParseIsEscaped(const char *, const char *);
1.122 dsl 286: static void ParseErrorInternal(const char *, size_t, int, const char *, ...)
1.53 is 287: __attribute__((__format__(__printf__, 4, 5)));
1.127 dsl 288: static void ParseVErrorInternal(FILE *, const char *, size_t, int, const char *, va_list)
289: __attribute__((__format__(__printf__, 5, 0)));
1.120 dsl 290: static int ParseFindKeyword(const char *);
1.157 ! dsl 291: static int ParseLinkSrc(void *, void *);
! 292: static int ParseDoOp(void *, void *);
1.120 dsl 293: static void ParseDoSrc(int, const char *);
1.157 ! dsl 294: static int ParseFindMain(void *, void *);
! 295: static int ParseAddDir(void *, void *);
! 296: static int ParseClearPath(void *, void *);
1.84 wiz 297: static void ParseDoDependency(char *);
1.157 ! dsl 298: static int ParseAddCmd(void *, void *);
! 299: static void ParseHasCommands(void *);
1.84 wiz 300: static void ParseDoInclude(char *);
1.122 dsl 301: static void ParseSetParseFile(const char *);
1.5 cgd 302: #ifdef SYSVINCLUDE
1.84 wiz 303: static void ParseTraditionalInclude(char *);
1.5 cgd 304: #endif
1.123 dsl 305: static int ParseEOF(void);
1.84 wiz 306: static char *ParseReadLine(void);
307: static void ParseFinishLine(void);
308: static void ParseMark(GNode *);
1.5 cgd 309:
1.56 christos 310: extern int maxJobs;
311:
1.77 christos 312:
313: /*-
314: *----------------------------------------------------------------------
315: * ParseIsEscaped --
316: * Check if the current character is escaped on the current line
317: *
318: * Results:
319: * 0 if the character is not backslash escaped, 1 otherwise
320: *
321: * Side Effects:
322: * None
323: *----------------------------------------------------------------------
324: */
325: static int
1.84 wiz 326: ParseIsEscaped(const char *line, const char *c)
1.77 christos 327: {
328: int active = 0;
329: for (;;) {
330: if (line == c)
331: return active;
332: if (*--c != '\\')
333: return active;
334: active = !active;
335: }
336: }
337:
1.1 cgd 338: /*-
339: *----------------------------------------------------------------------
340: * ParseFindKeyword --
341: * Look in the table of keywords for one matching the given string.
342: *
1.84 wiz 343: * Input:
344: * str String to find
345: *
1.1 cgd 346: * Results:
347: * The index of the keyword, or -1 if it isn't there.
348: *
349: * Side Effects:
350: * None
351: *----------------------------------------------------------------------
352: */
353: static int
1.120 dsl 354: ParseFindKeyword(const char *str)
1.1 cgd 355: {
1.84 wiz 356: int start, end, cur;
357: int diff;
1.27 christos 358:
1.1 cgd 359: start = 0;
360: end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1;
361:
362: do {
363: cur = start + ((end - start) / 2);
1.103 christos 364: diff = strcmp(str, parseKeywords[cur].name);
1.1 cgd 365:
366: if (diff == 0) {
367: return (cur);
368: } else if (diff < 0) {
369: end = cur - 1;
370: } else {
371: start = cur + 1;
372: }
373: } while (start <= end);
374: return (-1);
375: }
376:
377: /*-
1.38 christos 378: * ParseVErrorInternal --
1.1 cgd 379: * Error message abort function for parsing. Prints out the context
380: * of the error (line number and file) as well as the message with
381: * two optional arguments.
382: *
383: * Results:
384: * None
385: *
386: * Side Effects:
387: * "fatals" is incremented if the level is PARSE_FATAL.
388: */
389: /* VARARGS */
1.38 christos 390: static void
1.127 dsl 391: ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type,
1.122 dsl 392: const char *fmt, va_list ap)
1.38 christos 393: {
1.56 christos 394: static Boolean fatal_warning_error_printed = FALSE;
395:
1.148 sjg 396: (void)fprintf(f, "%s: ", progname);
1.63 christos 397:
1.148 sjg 398: if (cfname != NULL) {
399: (void)fprintf(f, "\"");
400: if (*cfname != '/' && strcmp(cfname, "(stdin)") != 0) {
401: char *cp;
402: const char *dir;
1.55 sjg 403:
1.148 sjg 404: /*
405: * Nothing is more anoying than not knowing
406: * which Makefile is the culprit.
407: */
408: dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp);
409: if (dir == NULL || *dir == '\0' ||
410: (*dir == '.' && dir[1] == '\0'))
411: dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp);
412: if (dir == NULL)
413: dir = ".";
414:
415: (void)fprintf(f, "%s/%s", dir, cfname);
416: } else
417: (void)fprintf(f, "%s", cfname);
1.63 christos 418:
1.148 sjg 419: (void)fprintf(f, "\" line %d: ", (int)clineno);
420: }
1.38 christos 421: if (type == PARSE_WARNING)
1.127 dsl 422: (void)fprintf(f, "warning: ");
423: (void)vfprintf(f, fmt, ap);
424: (void)fprintf(f, "\n");
425: (void)fflush(f);
1.56 christos 426: if (type == PARSE_FATAL || parseWarnFatal)
1.38 christos 427: fatals += 1;
1.56 christos 428: if (parseWarnFatal && !fatal_warning_error_printed) {
429: Error("parsing warnings being treated as errors");
430: fatal_warning_error_printed = TRUE;
431: }
1.38 christos 432: }
433:
434: /*-
435: * ParseErrorInternal --
436: * Error function
437: *
438: * Results:
439: * None
440: *
441: * Side Effects:
442: * None
443: */
444: /* VARARGS */
445: static void
1.122 dsl 446: ParseErrorInternal(const char *cfname, size_t clineno, int type,
447: const char *fmt, ...)
1.38 christos 448: {
449: va_list ap;
1.84 wiz 450:
1.38 christos 451: va_start(ap, fmt);
1.127 dsl 452: ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap);
1.38 christos 453: va_end(ap);
1.127 dsl 454:
1.131 dsl 455: if (debug_file != stderr && debug_file != stdout) {
1.127 dsl 456: va_start(ap, fmt);
1.131 dsl 457: ParseVErrorInternal(debug_file, cfname, clineno, type, fmt, ap);
1.127 dsl 458: va_end(ap);
459: }
1.38 christos 460: }
461:
462: /*-
463: * Parse_Error --
464: * External interface to ParseErrorInternal; uses the default filename
465: * Line number.
466: *
467: * Results:
468: * None
469: *
470: * Side Effects:
471: * None
472: */
473: /* VARARGS */
1.1 cgd 474: void
1.93 christos 475: Parse_Error(int type, const char *fmt, ...)
1.1 cgd 476: {
477: va_list ap;
1.156 dsl 478: const char *fname;
479: size_t lineno;
1.84 wiz 480:
1.152 dsl 481: if (curFile == NULL) {
1.156 dsl 482: fname = NULL;
483: lineno = 0;
484: } else {
485: fname = curFile->fname;
486: lineno = curFile->lineno;
1.148 sjg 487: }
1.156 dsl 488:
489: va_start(ap, fmt);
490: ParseVErrorInternal(stderr, fname, lineno, type, fmt, ap);
1.1 cgd 491: va_end(ap);
1.127 dsl 492:
1.131 dsl 493: if (debug_file != stderr && debug_file != stdout) {
1.127 dsl 494: va_start(ap, fmt);
1.156 dsl 495: ParseVErrorInternal(debug_file, fname, lineno, type, fmt, ap);
1.127 dsl 496: va_end(ap);
497: }
1.1 cgd 498: }
499:
500: /*-
501: *---------------------------------------------------------------------
502: * ParseLinkSrc --
503: * Link the parent node to its new child. Used in a Lst_ForEach by
504: * ParseDoDependency. If the specType isn't 'Not', the parent
505: * isn't linked as a parent of the child.
506: *
1.84 wiz 507: * Input:
508: * pgnp The parent node
509: * cgpn The child node
510: *
1.1 cgd 511: * Results:
512: * Always = 0
513: *
514: * Side Effects:
515: * New elements are added to the parents list of cgn and the
516: * children list of cgn. the unmade field of pgn is updated
517: * to reflect the additional child.
518: *---------------------------------------------------------------------
519: */
520: static int
1.157 ! dsl 521: ParseLinkSrc(void *pgnp, void *cgnp)
1.1 cgd 522: {
1.105 christos 523: GNode *pgn = (GNode *)pgnp;
524: GNode *cgn = (GNode *)cgnp;
1.52 mycroft 525:
1.47 mycroft 526: if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts))
1.103 christos 527: pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts));
1.119 dsl 528: (void)Lst_AtEnd(pgn->children, cgn);
1.52 mycroft 529: if (specType == Not)
1.119 dsl 530: (void)Lst_AtEnd(cgn->parents, pgn);
1.52 mycroft 531: pgn->unmade += 1;
1.109 dsl 532: if (DEBUG(PARSE)) {
1.116 dsl 533: fprintf(debug_file, "# ParseLinkSrc: added child %s - %s\n", pgn->name, cgn->name);
1.109 dsl 534: Targ_PrintNode(pgn, 0);
535: Targ_PrintNode(cgn, 0);
536: }
1.1 cgd 537: return (0);
538: }
539:
540: /*-
541: *---------------------------------------------------------------------
542: * ParseDoOp --
543: * Apply the parsed operator to the given target node. Used in a
544: * Lst_ForEach call by ParseDoDependency once all targets have
545: * been found and their operator parsed. If the previous and new
546: * operators are incompatible, a major error is taken.
547: *
1.84 wiz 548: * Input:
549: * gnp The node to which the operator is to be applied
550: * opp The operator to apply
551: *
1.1 cgd 552: * Results:
553: * Always 0
554: *
555: * Side Effects:
556: * The type field of the node is altered to reflect any new bits in
557: * the op.
558: *---------------------------------------------------------------------
559: */
560: static int
1.157 ! dsl 561: ParseDoOp(void *gnp, void *opp)
1.1 cgd 562: {
1.105 christos 563: GNode *gn = (GNode *)gnp;
564: int op = *(int *)opp;
1.1 cgd 565: /*
566: * If the dependency mask of the operator and the node don't match and
567: * the node has actually had an operator applied to it before, and
1.27 christos 568: * the operator actually has some dependency information in it, complain.
1.1 cgd 569: */
570: if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) &&
571: !OP_NOP(gn->type) && !OP_NOP(op))
572: {
1.97 christos 573: Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name);
1.1 cgd 574: return (1);
575: }
576:
577: if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) {
578: /*
579: * If the node was the object of a :: operator, we need to create a
580: * new instance of it for the children and commands on this dependency
581: * line. The new instance is placed on the 'cohorts' list of the
582: * initial one (note the initial one is not on its own cohorts list)
583: * and the new instance is linked to all parents of the initial
584: * instance.
585: */
1.84 wiz 586: GNode *cohort;
1.27 christos 587:
1.33 mycroft 588: /*
1.46 mycroft 589: * Propagate copied bits to the initial node. They'll be propagated
590: * back to the rest of the cohorts later.
1.33 mycroft 591: */
1.46 mycroft 592: gn->type |= op & ~OP_OPMASK;
1.33 mycroft 593:
1.120 dsl 594: cohort = Targ_FindNode(gn->name, TARG_NOHASH);
1.1 cgd 595: /*
596: * Make the cohort invisible as well to avoid duplicating it into
597: * other variables. True, parents of this target won't tend to do
598: * anything with their local variables, but better safe than
1.46 mycroft 599: * sorry. (I think this is pointless now, since the relevant list
600: * traversals will no longer see this node anyway. -mycroft)
1.1 cgd 601: */
1.46 mycroft 602: cohort->type = op | OP_INVISIBLE;
1.119 dsl 603: (void)Lst_AtEnd(gn->cohorts, cohort);
1.83 pk 604: cohort->centurion = gn;
605: gn->unmade_cohorts += 1;
1.120 dsl 606: snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d",
607: gn->unmade_cohorts);
1.46 mycroft 608: } else {
1.1 cgd 609: /*
1.46 mycroft 610: * We don't want to nuke any previous flags (whatever they were) so we
611: * just OR the new operator into the old
1.1 cgd 612: */
1.46 mycroft 613: gn->type |= op;
1.1 cgd 614: }
1.33 mycroft 615:
1.1 cgd 616: return (0);
617: }
618:
1.27 christos 619: /*-
1.18 christos 620: *---------------------------------------------------------------------
1.1 cgd 621: * ParseDoSrc --
622: * Given the name of a source, figure out if it is an attribute
623: * and apply it to the targets if it is. Else decide if there is
624: * some attribute which should be applied *to* the source because
625: * of some special target and apply it if so. Otherwise, make the
626: * source be a child of the targets in the list 'targets'
627: *
1.84 wiz 628: * Input:
629: * tOp operator (if any) from special targets
630: * src name of the source to handle
631: *
1.1 cgd 632: * Results:
633: * None
634: *
635: * Side Effects:
636: * Operator bits may be added to the list of targets or to the source.
637: * The targets may have a new source added to their lists of children.
638: *---------------------------------------------------------------------
639: */
640: static void
1.120 dsl 641: ParseDoSrc(int tOp, const char *src)
1.1 cgd 642: {
1.18 christos 643: GNode *gn = NULL;
1.120 dsl 644: static int wait_number = 0;
645: char wait_src[16];
1.1 cgd 646:
1.40 christos 647: if (*src == '.' && isupper ((unsigned char)src[1])) {
1.1 cgd 648: int keywd = ParseFindKeyword(src);
649: if (keywd != -1) {
1.18 christos 650: int op = parseKeywords[keywd].op;
651: if (op != 0) {
1.119 dsl 652: Lst_ForEach(targets, ParseDoOp, &op);
1.18 christos 653: return;
654: }
655: if (parseKeywords[keywd].spec == Wait) {
1.120 dsl 656: /*
657: * We add a .WAIT node in the dependency list.
658: * After any dynamic dependencies (and filename globbing)
659: * have happened, it is given a dependency on the each
660: * previous child back to and previous .WAIT node.
661: * The next child won't be scheduled until the .WAIT node
662: * is built.
663: * We give each .WAIT node a unique name (mainly for diag).
664: */
665: snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number);
666: gn = Targ_FindNode(wait_src, TARG_NOHASH);
667: gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN;
668: Lst_ForEach(targets, ParseLinkSrc, gn);
1.18 christos 669: return;
670: }
1.1 cgd 671: }
672: }
1.18 christos 673:
674: switch (specType) {
675: case Main:
1.1 cgd 676: /*
677: * If we have noted the existence of a .MAIN, it means we need
678: * to add the sources of said target to the list of things
679: * to create. The string 'src' is likely to be free, so we
680: * must make a new copy of it. Note that this will only be
681: * invoked if the user didn't specify a target on the command
682: * line. This is to allow #ifmake's to succeed, or something...
683: */
1.147 joerg 684: (void)Lst_AtEnd(create, bmake_strdup(src));
1.1 cgd 685: /*
1.118 dsl 686: * Add the name to the .TARGETS variable as well, so the user can
1.1 cgd 687: * employ that, if desired.
688: */
689: Var_Append(".TARGETS", src, VAR_GLOBAL);
1.18 christos 690: return;
691:
692: case Order:
1.1 cgd 693: /*
694: * Create proper predecessor/successor links between the previous
695: * source and the current one.
696: */
697: gn = Targ_FindNode(src, TARG_CREATE);
1.152 dsl 698: if (predecessor != NULL) {
1.120 dsl 699: (void)Lst_AtEnd(predecessor->order_succ, gn);
700: (void)Lst_AtEnd(gn->order_pred, predecessor);
1.109 dsl 701: if (DEBUG(PARSE)) {
1.116 dsl 702: fprintf(debug_file, "# ParseDoSrc: added Order dependency %s - %s\n",
1.109 dsl 703: predecessor->name, gn->name);
704: Targ_PrintNode(predecessor, 0);
705: Targ_PrintNode(gn, 0);
706: }
1.1 cgd 707: }
708: /*
709: * The current source now becomes the predecessor for the next one.
710: */
711: predecessor = gn;
1.18 christos 712: break;
713:
714: default:
1.1 cgd 715: /*
716: * If the source is not an attribute, we need to find/create
717: * a node for it. After that we can apply any operator to it
718: * from a special target or link it to its parents, as
719: * appropriate.
720: *
721: * In the case of a source that was the object of a :: operator,
722: * the attribute is applied to all of its instances (as kept in
723: * the 'cohorts' list of the node) or all the cohorts are linked
724: * to all the targets.
725: */
1.118 dsl 726:
727: /* Find/create the 'src' node and attach to all targets */
1.97 christos 728: gn = Targ_FindNode(src, TARG_CREATE);
1.1 cgd 729: if (tOp) {
730: gn->type |= tOp;
731: } else {
1.119 dsl 732: Lst_ForEach(targets, ParseLinkSrc, gn);
1.1 cgd 733: }
1.18 christos 734: break;
735: }
1.1 cgd 736: }
737:
738: /*-
739: *-----------------------------------------------------------------------
740: * ParseFindMain --
741: * Find a real target in the list and set it to be the main one.
742: * Called by ParseDoDependency when a main target hasn't been found
743: * yet.
744: *
1.84 wiz 745: * Input:
746: * gnp Node to examine
747: *
1.1 cgd 748: * Results:
749: * 0 if main not found yet, 1 if it is.
750: *
751: * Side Effects:
752: * mainNode is changed and Targ_SetMain is called.
753: *
754: *-----------------------------------------------------------------------
755: */
756: static int
1.157 ! dsl 757: ParseFindMain(void *gnp, void *dummy)
1.1 cgd 758: {
1.105 christos 759: GNode *gn = (GNode *)gnp;
1.30 christos 760: if ((gn->type & OP_NOTARGET) == 0) {
1.1 cgd 761: mainNode = gn;
762: Targ_SetMain(gn);
1.9 jtc 763: return (dummy ? 1 : 1);
1.1 cgd 764: } else {
1.9 jtc 765: return (dummy ? 0 : 0);
1.1 cgd 766: }
767: }
768:
769: /*-
770: *-----------------------------------------------------------------------
771: * ParseAddDir --
772: * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going
773: *
774: * Results:
775: * === 0
776: *
777: * Side Effects:
778: * See Dir_AddDir.
779: *
780: *-----------------------------------------------------------------------
781: */
782: static int
1.157 ! dsl 783: ParseAddDir(void *path, void *name)
1.1 cgd 784: {
1.105 christos 785: (void)Dir_AddDir((Lst) path, (char *)name);
1.1 cgd 786: return(0);
787: }
788:
789: /*-
790: *-----------------------------------------------------------------------
791: * ParseClearPath --
792: * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going
793: *
794: * Results:
795: * === 0
796: *
797: * Side Effects:
798: * See Dir_ClearPath
799: *
800: *-----------------------------------------------------------------------
801: */
802: static int
1.157 ! dsl 803: ParseClearPath(void *path, void *dummy)
1.1 cgd 804: {
1.9 jtc 805: Dir_ClearPath((Lst) path);
806: return(dummy ? 0 : 0);
1.1 cgd 807: }
808:
809: /*-
810: *---------------------------------------------------------------------
811: * ParseDoDependency --
812: * Parse the dependency line in line.
813: *
1.84 wiz 814: * Input:
815: * line the line to parse
816: *
1.1 cgd 817: * Results:
818: * None
819: *
820: * Side Effects:
821: * The nodes of the sources are linked as children to the nodes of the
822: * targets. Some nodes may be created.
823: *
824: * We parse a dependency line by first extracting words from the line and
825: * finding nodes in the list of all targets with that name. This is done
826: * until a character is encountered which is an operator character. Currently
827: * these are only ! and :. At this point the operator is parsed and the
828: * pointer into the line advanced until the first source is encountered.
829: * The parsed operator is applied to each node in the 'targets' list,
830: * which is where the nodes found for the targets are kept, by means of
831: * the ParseDoOp function.
832: * The sources are read in much the same way as the targets were except
833: * that now they are expanded using the wildcarding scheme of the C-Shell
834: * and all instances of the resulting words in the list of all targets
835: * are found. Each of the resulting nodes is then linked to each of the
836: * targets as one of its children.
837: * Certain targets are handled specially. These are the ones detailed
838: * by the specType variable.
839: * The storing of transformation rules is also taken care of here.
840: * A target is recognized as a transformation rule by calling
841: * Suff_IsTransform. If it is a transformation rule, its node is gotten
842: * from the suffix module via Suff_AddTransform rather than the standard
843: * Targ_FindNode in the target module.
844: *---------------------------------------------------------------------
845: */
846: static void
1.84 wiz 847: ParseDoDependency(char *line)
1.1 cgd 848: {
1.9 jtc 849: char *cp; /* our current position */
1.98 christos 850: GNode *gn = NULL; /* a general purpose temporary node */
1.9 jtc 851: int op; /* the operator on the line */
1.1 cgd 852: char savec; /* a place to save a character */
853: Lst paths; /* List of search paths to alter when parsing
854: * a list of .PATH targets */
855: int tOp; /* operator from special target */
1.18 christos 856: Lst sources; /* list of archive source names after
857: * expansion */
1.1 cgd 858: Lst curTargs; /* list of target names to be found and added
859: * to the targets list */
1.77 christos 860: char *lstart = line;
1.1 cgd 861:
1.120 dsl 862: if (DEBUG(PARSE))
863: fprintf(debug_file, "ParseDoDependency(%s)\n", line);
1.1 cgd 864: tOp = 0;
865:
866: specType = Not;
867: paths = (Lst)NULL;
868:
869: curTargs = Lst_Init(FALSE);
1.27 christos 870:
1.1 cgd 871: do {
1.121 dsl 872: for (cp = line; *cp && (ParseIsEscaped(lstart, cp) ||
873: !(isspace((unsigned char)*cp) ||
874: *cp == '!' || *cp == ':' || *cp == LPAREN));
875: cp++) {
1.1 cgd 876: if (*cp == '$') {
877: /*
878: * Must be a dynamic source (would have been expanded
879: * otherwise), so call the Var module to parse the puppy
880: * so we can safely advance beyond it...There should be
881: * no errors in this, as they would have been discovered
882: * in the initial Var_Subst and we wouldn't be here.
883: */
1.145 christos 884: int length;
1.114 christos 885: void *freeIt;
1.145 christos 886: char *result;
1.1 cgd 887:
1.145 christos 888: result = Var_Parse(cp, VAR_CMD, TRUE, &length, &freeIt);
1.114 christos 889: if (freeIt)
890: free(freeIt);
1.1 cgd 891: cp += length-1;
892: }
893: }
1.121 dsl 894:
1.77 christos 895: if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) {
1.1 cgd 896: /*
897: * Archives must be handled specially to make sure the OP_ARCHV
898: * flag is set in their 'type' field, for one thing, and because
899: * things like "archive(file1.o file2.o file3.o)" are permissible.
900: * Arch_ParseArchive will set 'line' to be the first non-blank
901: * after the archive-spec. It creates/finds nodes for the members
902: * and places them on the given list, returning SUCCESS if all
903: * went well and FAILURE if there was an error in the
904: * specification. On error, line should remain untouched.
905: */
1.97 christos 906: if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) {
907: Parse_Error(PARSE_FATAL,
1.1 cgd 908: "Error in archive specification: \"%s\"", line);
1.112 christos 909: goto out;
1.1 cgd 910: } else {
911: continue;
912: }
913: }
914: savec = *cp;
1.27 christos 915:
1.1 cgd 916: if (!*cp) {
917: /*
918: * Ending a dependency line without an operator is a Bozo
1.65 sommerfe 919: * no-no. As a heuristic, this is also often triggered by
920: * undetected conflicts from cvs/rcs merges.
1.1 cgd 921: */
1.65 sommerfe 922: if ((strncmp(line, "<<<<<<", 6) == 0) ||
923: (strncmp(line, "======", 6) == 0) ||
924: (strncmp(line, ">>>>>>", 6) == 0))
1.97 christos 925: Parse_Error(PARSE_FATAL,
1.67 sommerfe 926: "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts");
1.65 sommerfe 927: else
1.97 christos 928: Parse_Error(PARSE_FATAL, "Need an operator");
1.112 christos 929: goto out;
1.1 cgd 930: }
931: *cp = '\0';
1.118 dsl 932:
1.1 cgd 933: /*
934: * Have a word in line. See if it's a special target and set
935: * specType to match it.
936: */
1.40 christos 937: if (*line == '.' && isupper ((unsigned char)line[1])) {
1.1 cgd 938: /*
939: * See if the target is a special target that must have it
1.27 christos 940: * or its sources handled specially.
1.1 cgd 941: */
942: int keywd = ParseFindKeyword(line);
943: if (keywd != -1) {
1.5 cgd 944: if (specType == ExPath && parseKeywords[keywd].spec != ExPath) {
1.1 cgd 945: Parse_Error(PARSE_FATAL, "Mismatched special targets");
1.112 christos 946: goto out;
1.1 cgd 947: }
1.27 christos 948:
1.1 cgd 949: specType = parseKeywords[keywd].spec;
950: tOp = parseKeywords[keywd].op;
951:
952: /*
953: * Certain special targets have special semantics:
954: * .PATH Have to set the dirSearchPath
955: * variable too
956: * .MAIN Its sources are only used if
957: * nothing has been specified to
958: * create.
959: * .DEFAULT Need to create a node to hang
960: * commands on, but we don't want
961: * it in the graph, nor do we want
962: * it to be the Main Target, so we
963: * create it, set OP_NOTMAIN and
964: * add it to the list, setting
965: * DEFAULT to the new node for
966: * later use. We claim the node is
967: * A transformation rule to make
968: * life easier later, when we'll
969: * use Make_HandleUse to actually
970: * apply the .DEFAULT commands.
1.22 christos 971: * .PHONY The list of targets
1.32 gwr 972: * .NOPATH Don't search for file in the path
1.1 cgd 973: * .BEGIN
974: * .END
975: * .INTERRUPT Are not to be considered the
976: * main target.
977: * .NOTPARALLEL Make only one target at a time.
978: * .SINGLESHELL Create a shell for each command.
1.152 dsl 979: * .ORDER Must set initial predecessor to NULL
1.1 cgd 980: */
981: switch (specType) {
1.5 cgd 982: case ExPath:
1.1 cgd 983: if (paths == NULL) {
984: paths = Lst_Init(FALSE);
985: }
1.119 dsl 986: (void)Lst_AtEnd(paths, dirSearchPath);
1.1 cgd 987: break;
988: case Main:
989: if (!Lst_IsEmpty(create)) {
990: specType = Not;
991: }
992: break;
993: case Begin:
994: case End:
995: case Interrupt:
996: gn = Targ_FindNode(line, TARG_CREATE);
1.99 christos 997: gn->type |= OP_NOTMAIN|OP_SPECIAL;
1.119 dsl 998: (void)Lst_AtEnd(targets, gn);
1.1 cgd 999: break;
1000: case Default:
1001: gn = Targ_NewGN(".DEFAULT");
1002: gn->type |= (OP_NOTMAIN|OP_TRANSFORM);
1.119 dsl 1003: (void)Lst_AtEnd(targets, gn);
1.1 cgd 1004: DEFAULT = gn;
1005: break;
1006: case NotParallel:
1.113 dsl 1007: maxJobs = 1;
1.1 cgd 1008: break;
1009: case SingleShell:
1.54 sommerfe 1010: compatMake = TRUE;
1.1 cgd 1011: break;
1012: case Order:
1.152 dsl 1013: predecessor = NULL;
1.1 cgd 1014: break;
1.5 cgd 1015: default:
1016: break;
1.1 cgd 1017: }
1.103 christos 1018: } else if (strncmp(line, ".PATH", 5) == 0) {
1.1 cgd 1019: /*
1020: * .PATH<suffix> has to be handled specially.
1021: * Call on the suffix module to give us a path to
1022: * modify.
1023: */
1024: Lst path;
1.27 christos 1025:
1.5 cgd 1026: specType = ExPath;
1.97 christos 1027: path = Suff_GetPath(&line[5]);
1.152 dsl 1028: if (path == NULL) {
1.97 christos 1029: Parse_Error(PARSE_FATAL,
1.1 cgd 1030: "Suffix '%s' not defined (yet)",
1031: &line[5]);
1.112 christos 1032: goto out;
1.1 cgd 1033: } else {
1034: if (paths == (Lst)NULL) {
1035: paths = Lst_Init(FALSE);
1036: }
1.119 dsl 1037: (void)Lst_AtEnd(paths, path);
1.1 cgd 1038: }
1039: }
1040: }
1.27 christos 1041:
1.1 cgd 1042: /*
1043: * Have word in line. Get or create its node and stick it at
1.27 christos 1044: * the end of the targets list
1.1 cgd 1045: */
1046: if ((specType == Not) && (*line != '\0')) {
1047: if (Dir_HasWildcards(line)) {
1048: /*
1049: * Targets are to be sought only in the current directory,
1050: * so create an empty path for the thing. Note we need to
1051: * use Dir_Destroy in the destruction of the path as the
1052: * Dir module could have added a directory to the path...
1053: */
1054: Lst emptyPath = Lst_Init(FALSE);
1.27 christos 1055:
1.1 cgd 1056: Dir_Expand(line, emptyPath, curTargs);
1.27 christos 1057:
1.1 cgd 1058: Lst_Destroy(emptyPath, Dir_Destroy);
1059: } else {
1060: /*
1061: * No wildcards, but we want to avoid code duplication,
1062: * so create a list with the word on it.
1063: */
1.119 dsl 1064: (void)Lst_AtEnd(curTargs, line);
1.1 cgd 1065: }
1.27 christos 1066:
1.1 cgd 1067: while(!Lst_IsEmpty(curTargs)) {
1068: char *targName = (char *)Lst_DeQueue(curTargs);
1.27 christos 1069:
1.1 cgd 1070: if (!Suff_IsTransform (targName)) {
1.97 christos 1071: gn = Targ_FindNode(targName, TARG_CREATE);
1.1 cgd 1072: } else {
1.97 christos 1073: gn = Suff_AddTransform(targName);
1.1 cgd 1074: }
1.27 christos 1075:
1.119 dsl 1076: (void)Lst_AtEnd(targets, gn);
1.1 cgd 1077: }
1.5 cgd 1078: } else if (specType == ExPath && *line != '.' && *line != '\0') {
1.1 cgd 1079: Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line);
1080: }
1.27 christos 1081:
1.1 cgd 1082: *cp = savec;
1083: /*
1084: * If it is a special type and not .PATH, it's the only target we
1085: * allow on this line...
1086: */
1.5 cgd 1087: if (specType != Not && specType != ExPath) {
1.115 christos 1088: Boolean warning = FALSE;
1.27 christos 1089:
1.77 christos 1090: while (*cp && (ParseIsEscaped(lstart, cp) ||
1091: ((*cp != '!') && (*cp != ':')))) {
1092: if (ParseIsEscaped(lstart, cp) ||
1093: (*cp != ' ' && *cp != '\t')) {
1.115 christos 1094: warning = TRUE;
1.1 cgd 1095: }
1096: cp++;
1097: }
1.115 christos 1098: if (warning) {
1.1 cgd 1099: Parse_Error(PARSE_WARNING, "Extra target ignored");
1100: }
1101: } else {
1.40 christos 1102: while (*cp && isspace ((unsigned char)*cp)) {
1.1 cgd 1103: cp++;
1104: }
1105: }
1106: line = cp;
1.77 christos 1107: } while (*line && (ParseIsEscaped(lstart, line) ||
1108: ((*line != '!') && (*line != ':'))));
1.1 cgd 1109:
1110: /*
1111: * Don't need the list of target names anymore...
1112: */
1.152 dsl 1113: Lst_Destroy(curTargs, NULL);
1.112 christos 1114: curTargs = NULL;
1.1 cgd 1115:
1116: if (!Lst_IsEmpty(targets)) {
1117: switch(specType) {
1118: default:
1119: Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored");
1120: break;
1121: case Default:
1122: case Begin:
1123: case End:
1124: case Interrupt:
1125: /*
1126: * These four create nodes on which to hang commands, so
1127: * targets shouldn't be empty...
1128: */
1129: case Not:
1130: /*
1131: * Nothing special here -- targets can be empty if it wants.
1132: */
1133: break;
1134: }
1135: }
1136:
1137: /*
1138: * Have now parsed all the target names. Must parse the operator next. The
1139: * result is left in op .
1140: */
1141: if (*cp == '!') {
1142: op = OP_FORCE;
1143: } else if (*cp == ':') {
1144: if (cp[1] == ':') {
1145: op = OP_DOUBLEDEP;
1146: cp++;
1147: } else {
1148: op = OP_DEPENDS;
1149: }
1150: } else {
1.97 christos 1151: Parse_Error(PARSE_FATAL, "Missing dependency operator");
1.112 christos 1152: goto out;
1.1 cgd 1153: }
1154:
1155: cp++; /* Advance beyond operator */
1156:
1.119 dsl 1157: Lst_ForEach(targets, ParseDoOp, &op);
1.1 cgd 1158:
1159: /*
1.27 christos 1160: * Get to the first source
1.1 cgd 1161: */
1.40 christos 1162: while (*cp && isspace ((unsigned char)*cp)) {
1.1 cgd 1163: cp++;
1164: }
1165: line = cp;
1166:
1167: /*
1168: * Several special targets take different actions if present with no
1169: * sources:
1170: * a .SUFFIXES line with no sources clears out all old suffixes
1171: * a .PRECIOUS line makes all targets precious
1172: * a .IGNORE line ignores errors for all targets
1173: * a .SILENT line creates silence when making all targets
1174: * a .PATH removes all directories from the search path(s).
1175: */
1176: if (!*line) {
1177: switch (specType) {
1178: case Suffixes:
1.97 christos 1179: Suff_ClearSuffixes();
1.1 cgd 1180: break;
1181: case Precious:
1182: allPrecious = TRUE;
1183: break;
1184: case Ignore:
1185: ignoreErrors = TRUE;
1186: break;
1187: case Silent:
1188: beSilent = TRUE;
1189: break;
1.5 cgd 1190: case ExPath:
1.119 dsl 1191: Lst_ForEach(paths, ParseClearPath, NULL);
1.85 sjg 1192: Dir_SetPATH();
1.1 cgd 1193: break;
1.48 sjg 1194: #ifdef POSIX
1195: case Posix:
1.70 sjg 1196: Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0);
1.48 sjg 1197: break;
1198: #endif
1.5 cgd 1199: default:
1200: break;
1.1 cgd 1201: }
1202: } else if (specType == MFlags) {
1203: /*
1204: * Call on functions in main.c to deal with these arguments and
1205: * set the initial character to a null-character so the loop to
1206: * get sources won't get anything
1207: */
1.97 christos 1208: Main_ParseArgLine(line);
1.1 cgd 1209: *line = '\0';
1.5 cgd 1210: } else if (specType == ExShell) {
1.97 christos 1211: if (Job_ParseShell(line) != SUCCESS) {
1212: Parse_Error(PARSE_FATAL, "improper shell specification");
1.112 christos 1213: goto out;
1.1 cgd 1214: }
1215: *line = '\0';
1216: } else if ((specType == NotParallel) || (specType == SingleShell)) {
1217: *line = '\0';
1218: }
1.27 christos 1219:
1.1 cgd 1220: /*
1.27 christos 1221: * NOW GO FOR THE SOURCES
1.1 cgd 1222: */
1.5 cgd 1223: if ((specType == Suffixes) || (specType == ExPath) ||
1.1 cgd 1224: (specType == Includes) || (specType == Libs) ||
1.75 tv 1225: (specType == Null) || (specType == ExObjdir))
1.1 cgd 1226: {
1227: while (*line) {
1228: /*
1229: * If the target was one that doesn't take files as its sources
1230: * but takes something like suffixes, we take each
1231: * space-separated word on the line as a something and deal
1232: * with it accordingly.
1233: *
1234: * If the target was .SUFFIXES, we take each source as a
1235: * suffix and add it to the list of suffixes maintained by the
1236: * Suff module.
1237: *
1238: * If the target was a .PATH, we add the source as a directory
1239: * to search on the search path.
1240: *
1241: * If it was .INCLUDES, the source is taken to be the suffix of
1242: * files which will be #included and whose search path should
1243: * be present in the .INCLUDES variable.
1244: *
1245: * If it was .LIBS, the source is taken to be the suffix of
1246: * files which are considered libraries and whose search path
1247: * should be present in the .LIBS variable.
1248: *
1249: * If it was .NULL, the source is the suffix to use when a file
1250: * has no valid suffix.
1.75 tv 1251: *
1252: * If it was .OBJDIR, the source is a new definition for .OBJDIR,
1253: * and will cause make to do a new chdir to that path.
1.1 cgd 1254: */
1.40 christos 1255: while (*cp && !isspace ((unsigned char)*cp)) {
1.1 cgd 1256: cp++;
1257: }
1258: savec = *cp;
1259: *cp = '\0';
1260: switch (specType) {
1261: case Suffixes:
1.97 christos 1262: Suff_AddSuffix(line, &mainNode);
1.1 cgd 1263: break;
1.5 cgd 1264: case ExPath:
1.119 dsl 1265: Lst_ForEach(paths, ParseAddDir, line);
1.1 cgd 1266: break;
1267: case Includes:
1.97 christos 1268: Suff_AddInclude(line);
1.1 cgd 1269: break;
1270: case Libs:
1.97 christos 1271: Suff_AddLib(line);
1.1 cgd 1272: break;
1273: case Null:
1.97 christos 1274: Suff_SetNull(line);
1.75 tv 1275: break;
1276: case ExObjdir:
1277: Main_SetObjdir(line);
1.1 cgd 1278: break;
1.5 cgd 1279: default:
1280: break;
1.1 cgd 1281: }
1282: *cp = savec;
1283: if (savec != '\0') {
1284: cp++;
1285: }
1.40 christos 1286: while (*cp && isspace ((unsigned char)*cp)) {
1.1 cgd 1287: cp++;
1288: }
1289: line = cp;
1290: }
1291: if (paths) {
1.152 dsl 1292: Lst_Destroy(paths, NULL);
1.1 cgd 1293: }
1.85 sjg 1294: if (specType == ExPath)
1295: Dir_SetPATH();
1.1 cgd 1296: } else {
1297: while (*line) {
1298: /*
1299: * The targets take real sources, so we must beware of archive
1300: * specifications (i.e. things with left parentheses in them)
1301: * and handle them accordingly.
1302: */
1.118 dsl 1303: for (; *cp && !isspace ((unsigned char)*cp); cp++) {
1.77 christos 1304: if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) {
1.1 cgd 1305: /*
1306: * Only stop for a left parenthesis if it isn't at the
1307: * start of a word (that'll be for variable changes
1308: * later) and isn't preceded by a dollar sign (a dynamic
1309: * source).
1310: */
1311: break;
1312: }
1313: }
1314:
1.77 christos 1315: if (*cp == LPAREN) {
1.97 christos 1316: sources = Lst_Init(FALSE);
1317: if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) {
1318: Parse_Error(PARSE_FATAL,
1.1 cgd 1319: "Error in source archive spec \"%s\"", line);
1.112 christos 1320: goto out;
1.1 cgd 1321: }
1322:
1323: while (!Lst_IsEmpty (sources)) {
1.103 christos 1324: gn = (GNode *)Lst_DeQueue(sources);
1.120 dsl 1325: ParseDoSrc(tOp, gn->name);
1.1 cgd 1326: }
1.152 dsl 1327: Lst_Destroy(sources, NULL);
1.1 cgd 1328: cp = line;
1329: } else {
1330: if (*cp) {
1331: *cp = '\0';
1332: cp += 1;
1333: }
1334:
1.120 dsl 1335: ParseDoSrc(tOp, line);
1.1 cgd 1336: }
1.40 christos 1337: while (*cp && isspace ((unsigned char)*cp)) {
1.1 cgd 1338: cp++;
1339: }
1340: line = cp;
1341: }
1342: }
1.27 christos 1343:
1.152 dsl 1344: if (mainNode == NULL) {
1.1 cgd 1345: /*
1346: * If we have yet to decide on a main target to make, in the
1347: * absence of any user input, we want the first target on
1348: * the first dependency line that is actually a real target
1349: * (i.e. isn't a .USE or .EXEC rule) to be made.
1350: */
1.119 dsl 1351: Lst_ForEach(targets, ParseFindMain, NULL);
1.1 cgd 1352: }
1353:
1.112 christos 1354: out:
1355: if (curTargs)
1.152 dsl 1356: Lst_Destroy(curTargs, NULL);
1.1 cgd 1357: }
1358:
1359: /*-
1360: *---------------------------------------------------------------------
1361: * Parse_IsVar --
1362: * Return TRUE if the passed line is a variable assignment. A variable
1363: * assignment consists of a single word followed by optional whitespace
1364: * followed by either a += or an = operator.
1365: * This function is used both by the Parse_File function and main when
1366: * parsing the command-line arguments.
1367: *
1.84 wiz 1368: * Input:
1369: * line the line to check
1370: *
1.1 cgd 1371: * Results:
1372: * TRUE if it is. FALSE if it ain't
1373: *
1374: * Side Effects:
1375: * none
1376: *---------------------------------------------------------------------
1377: */
1378: Boolean
1.84 wiz 1379: Parse_IsVar(char *line)
1.1 cgd 1380: {
1.84 wiz 1381: Boolean wasSpace = FALSE; /* set TRUE if found a space */
1.154 dsl 1382: char ch;
1.16 christos 1383: int level = 0;
1384: #define ISEQOPERATOR(c) \
1385: (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!'))
1.1 cgd 1386:
1387: /*
1388: * Skip to variable name
1389: */
1.27 christos 1390: for (;(*line == ' ') || (*line == '\t'); line++)
1.16 christos 1391: continue;
1.1 cgd 1392:
1.154 dsl 1393: /* Scan for one of the assignment operators outside a variable expansion */
1394: while ((ch = *line++) != 0) {
1395: if (ch == '(' || ch == '{') {
1.16 christos 1396: level++;
1.154 dsl 1397: continue;
1398: }
1399: if (ch == ')' || ch == '}') {
1.16 christos 1400: level--;
1.154 dsl 1401: continue;
1402: }
1403: if (level != 0)
1404: continue;
1405: while (ch == ' ' || ch == '\t') {
1406: ch = *line++;
1407: wasSpace = TRUE;
1.1 cgd 1408: }
1.154 dsl 1409: if (ch == '=')
1410: return TRUE;
1411: if (*line == '=' && ISEQOPERATOR(ch))
1412: return TRUE;
1413: if (wasSpace)
1414: return FALSE;
1415: }
1.1 cgd 1416:
1.154 dsl 1417: return FALSE;
1.1 cgd 1418: }
1419:
1420: /*-
1421: *---------------------------------------------------------------------
1422: * Parse_DoVar --
1423: * Take the variable assignment in the passed line and do it in the
1424: * global context.
1425: *
1426: * Note: There is a lexical ambiguity with assignment modifier characters
1427: * in variable names. This routine interprets the character before the =
1428: * as a modifier. Therefore, an assignment like
1429: * C++=/usr/bin/CC
1430: * is interpreted as "C+ +=" instead of "C++ =".
1431: *
1.84 wiz 1432: * Input:
1433: * line a line guaranteed to be a variable assignment.
1434: * This reduces error checks
1435: * ctxt Context in which to do the assignment
1436: *
1.1 cgd 1437: * Results:
1438: * none
1439: *
1440: * Side Effects:
1441: * the variable structure of the given variable name is altered in the
1442: * global context.
1443: *---------------------------------------------------------------------
1444: */
1445: void
1.84 wiz 1446: Parse_DoVar(char *line, GNode *ctxt)
1.1 cgd 1447: {
1.7 cgd 1448: char *cp; /* pointer into line */
1.1 cgd 1449: enum {
1450: VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL
1451: } type; /* Type of assignment */
1.27 christos 1452: char *opc; /* ptr to operator character to
1.1 cgd 1453: * null-terminate the variable name */
1.86 sjg 1454: Boolean freeCp = FALSE; /* TRUE if cp needs to be freed,
1455: * i.e. if any variable expansion was
1456: * performed */
1.153 dsl 1457: int depth;
1.1 cgd 1458:
1459: /*
1460: * Skip to variable name
1461: */
1462: while ((*line == ' ') || (*line == '\t')) {
1463: line++;
1464: }
1465:
1466: /*
1467: * Skip to operator character, nulling out whitespace as we go
1.153 dsl 1468: * XXX Rather than counting () and {} we should look for $ and
1469: * then expand the variable.
1.1 cgd 1470: */
1.153 dsl 1471: for (depth = 0, cp = line + 1; depth != 0 || *cp != '='; cp++) {
1472: if (*cp == '(' || *cp == '{') {
1473: depth++;
1474: continue;
1475: }
1476: if (*cp == ')' || *cp == '}') {
1477: depth--;
1478: continue;
1479: }
1480: if (depth == 0 && isspace ((unsigned char)*cp)) {
1.1 cgd 1481: *cp = '\0';
1482: }
1483: }
1484: opc = cp-1; /* operator is the previous character */
1485: *cp++ = '\0'; /* nuke the = */
1486:
1487: /*
1488: * Check operator type
1489: */
1490: switch (*opc) {
1491: case '+':
1492: type = VAR_APPEND;
1493: *opc = '\0';
1494: break;
1495:
1496: case '?':
1497: /*
1498: * If the variable already has a value, we don't do anything.
1499: */
1500: *opc = '\0';
1501: if (Var_Exists(line, ctxt)) {
1502: return;
1503: } else {
1504: type = VAR_NORMAL;
1505: }
1506: break;
1507:
1508: case ':':
1509: type = VAR_SUBST;
1510: *opc = '\0';
1511: break;
1512:
1513: case '!':
1514: type = VAR_SHELL;
1515: *opc = '\0';
1516: break;
1517:
1518: default:
1.23 christos 1519: #ifdef SUNSHCMD
1.39 christos 1520: while (opc > line && *opc != ':')
1521: opc--;
1.23 christos 1522:
1523: if (strncmp(opc, ":sh", 3) == 0) {
1524: type = VAR_SHELL;
1525: *opc = '\0';
1526: break;
1527: }
1528: #endif
1.1 cgd 1529: type = VAR_NORMAL;
1530: break;
1531: }
1532:
1.40 christos 1533: while (isspace ((unsigned char)*cp)) {
1.1 cgd 1534: cp++;
1535: }
1536:
1537: if (type == VAR_APPEND) {
1.97 christos 1538: Var_Append(line, cp, ctxt);
1.1 cgd 1539: } else if (type == VAR_SUBST) {
1540: /*
1541: * Allow variables in the old value to be undefined, but leave their
1542: * invocation alone -- this is done by forcing oldVars to be false.
1543: * XXX: This can cause recursive variables, but that's not hard to do,
1544: * and this allows someone to do something like
1545: *
1546: * CFLAGS = $(.INCLUDES)
1547: * CFLAGS := -I.. $(CFLAGS)
1548: *
1549: * And not get an error.
1550: */
1551: Boolean oldOldVars = oldVars;
1552:
1553: oldVars = FALSE;
1.42 christos 1554:
1555: /*
1556: * make sure that we set the variable the first time to nothing
1557: * so that it gets substituted!
1558: */
1559: if (!Var_Exists(line, ctxt))
1.70 sjg 1560: Var_Set(line, "", ctxt, 0);
1.42 christos 1561:
1.5 cgd 1562: cp = Var_Subst(NULL, cp, ctxt, FALSE);
1.1 cgd 1563: oldVars = oldOldVars;
1.86 sjg 1564: freeCp = TRUE;
1.1 cgd 1565:
1.70 sjg 1566: Var_Set(line, cp, ctxt, 0);
1.1 cgd 1567: } else if (type == VAR_SHELL) {
1.93 christos 1568: char *res;
1.115 christos 1569: const char *error;
1.5 cgd 1570:
1.23 christos 1571: if (strchr(cp, '$') != NULL) {
1.1 cgd 1572: /*
1573: * There's a dollar sign in the command, so perform variable
1574: * expansion on the whole thing. The resulting string will need
1575: * freeing when we're done, so set freeCmd to TRUE.
1576: */
1.23 christos 1577: cp = Var_Subst(NULL, cp, VAR_CMD, TRUE);
1.86 sjg 1578: freeCp = TRUE;
1.1 cgd 1579: }
1580:
1.115 christos 1581: res = Cmd_Exec(cp, &error);
1.70 sjg 1582: Var_Set(line, res, ctxt, 0);
1.23 christos 1583: free(res);
1.1 cgd 1584:
1.115 christos 1585: if (error)
1586: Parse_Error(PARSE_WARNING, error, cp);
1.1 cgd 1587: } else {
1588: /*
1589: * Normal assignment -- just do it.
1590: */
1.70 sjg 1591: Var_Set(line, cp, ctxt, 0);
1.1 cgd 1592: }
1.69 sjg 1593: if (strcmp(line, MAKEOVERRIDES) == 0)
1.74 tv 1594: Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */
1.85 sjg 1595: else if (strcmp(line, ".CURDIR") == 0) {
1596: /*
1597: * Somone is being (too?) clever...
1598: * Let's pretend they know what they are doing and
1599: * re-initialize the 'cur' Path.
1600: */
1601: Dir_InitCur(cp);
1602: Dir_SetPATH();
1.136 sjg 1603: } else if (strcmp(line, MAKE_JOB_PREFIX) == 0) {
1.135 sjg 1604: Job_SetPrefix();
1.136 sjg 1605: } else if (strcmp(line, MAKE_EXPORTED) == 0) {
1606: Var_Export(cp, 0);
1.85 sjg 1607: }
1.86 sjg 1608: if (freeCp)
1609: free(cp);
1.1 cgd 1610: }
1.23 christos 1611:
1.1 cgd 1612:
1613: /*-
1614: * ParseAddCmd --
1615: * Lst_ForEach function to add a command line to all targets
1616: *
1.84 wiz 1617: * Input:
1618: * gnp the node to which the command is to be added
1619: * cmd the command to add
1620: *
1.1 cgd 1621: * Results:
1622: * Always 0
1623: *
1624: * Side Effects:
1625: * A new element is added to the commands list of the node.
1626: */
1.5 cgd 1627: static int
1.157 ! dsl 1628: ParseAddCmd(void *gnp, void *cmd)
1.9 jtc 1629: {
1.105 christos 1630: GNode *gn = (GNode *)gnp;
1.120 dsl 1631:
1632: /* Add to last (ie current) cohort for :: targets */
1.47 mycroft 1633: if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts))
1.103 christos 1634: gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts));
1.120 dsl 1635:
1636: /* if target already supplied, ignore commands */
1.59 christos 1637: if (!(gn->type & OP_HAS_COMMANDS)) {
1638: (void)Lst_AtEnd(gn->commands, cmd);
1639: ParseMark(gn);
1640: } else {
1.60 christos 1641: #ifdef notyet
1642: /* XXX: We cannot do this until we fix the tree */
1.9 jtc 1643: (void)Lst_AtEnd(gn->commands, cmd);
1.97 christos 1644: Parse_Error(PARSE_WARNING,
1.61 christos 1645: "overriding commands for target \"%s\"; "
1646: "previous commands defined at %s: %d ignored",
1.59 christos 1647: gn->name, gn->fname, gn->lineno);
1.60 christos 1648: #else
1.97 christos 1649: Parse_Error(PARSE_WARNING,
1.62 mycroft 1650: "duplicate script for target \"%s\" ignored",
1651: gn->name);
1.97 christos 1652: ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING,
1.62 mycroft 1653: "using previous script for \"%s\" defined here",
1654: gn->name);
1.60 christos 1655: #endif
1.59 christos 1656: }
1.9 jtc 1657: return(0);
1.1 cgd 1658: }
1659:
1660: /*-
1661: *-----------------------------------------------------------------------
1662: * ParseHasCommands --
1663: * Callback procedure for Parse_File when destroying the list of
1664: * targets on the last dependency line. Marks a target as already
1665: * having commands if it does, to keep from having shell commands
1666: * on multiple dependency lines.
1667: *
1.84 wiz 1668: * Input:
1669: * gnp Node to examine
1670: *
1.1 cgd 1671: * Results:
1.9 jtc 1672: * None
1.1 cgd 1673: *
1674: * Side Effects:
1675: * OP_HAS_COMMANDS may be set for the target.
1676: *
1677: *-----------------------------------------------------------------------
1678: */
1.9 jtc 1679: static void
1.157 ! dsl 1680: ParseHasCommands(void *gnp)
1.1 cgd 1681: {
1.105 christos 1682: GNode *gn = (GNode *)gnp;
1.1 cgd 1683: if (!Lst_IsEmpty(gn->commands)) {
1684: gn->type |= OP_HAS_COMMANDS;
1685: }
1686: }
1687:
1688: /*-
1689: *-----------------------------------------------------------------------
1690: * Parse_AddIncludeDir --
1691: * Add a directory to the path searched for included makefiles
1692: * bracketed by double-quotes. Used by functions in main.c
1693: *
1.84 wiz 1694: * Input:
1695: * dir The name of the directory to add
1696: *
1.1 cgd 1697: * Results:
1698: * None.
1699: *
1700: * Side Effects:
1701: * The directory is appended to the list.
1702: *
1703: *-----------------------------------------------------------------------
1704: */
1705: void
1.84 wiz 1706: Parse_AddIncludeDir(char *dir)
1.1 cgd 1707: {
1.103 christos 1708: (void)Dir_AddDir(parseIncPath, dir);
1.1 cgd 1709: }
1710:
1711: /*-
1712: *---------------------------------------------------------------------
1713: * ParseDoInclude --
1714: * Push to another file.
1.27 christos 1715: *
1.38 christos 1716: * The input is the line minus the `.'. A file spec is a string
1.1 cgd 1717: * enclosed in <> or "". The former is looked for only in sysIncPath.
1718: * The latter in . and the directories specified by -I command line
1719: * options
1720: *
1721: * Results:
1722: * None
1723: *
1724: * Side Effects:
1725: * A structure is added to the includes Lst and readProc, lineno,
1726: * fname and curFILE are altered for the new file
1727: *---------------------------------------------------------------------
1728: */
1.123 dsl 1729:
1.1 cgd 1730: static void
1.123 dsl 1731: Parse_include_file(char *file, Boolean isSystem, int silent)
1.1 cgd 1732: {
1733: char *fullname; /* full pathname of file */
1.140 dsl 1734: char *newName;
1735: char *prefEnd, *incdir;
1.125 dsl 1736: int fd;
1.140 dsl 1737: int i;
1.1 cgd 1738:
1739: /*
1740: * Now we know the file's name and its search path, we attempt to
1741: * find the durn thing. A return of NULL indicates the file don't
1742: * exist.
1743: */
1.147 joerg 1744: fullname = file[0] == '/' ? bmake_strdup(file) : NULL;
1.76 reinoud 1745:
1.140 dsl 1746: if (fullname == NULL && !isSystem) {
1.1 cgd 1747: /*
1748: * Include files contained in double-quotes are first searched for
1749: * relative to the including file's location. We don't want to
1750: * cd there, of course, so we just tack on the old file's
1751: * leading path components and call Dir_FindFile to see if
1752: * we can locate the beast.
1753: */
1754:
1.147 joerg 1755: incdir = bmake_strdup(curFile->fname);
1.140 dsl 1756: prefEnd = strrchr(incdir, '/');
1.105 christos 1757: if (prefEnd != NULL) {
1.1 cgd 1758: *prefEnd = '\0';
1.140 dsl 1759: /* Now do lexical processing of leading "../" on the filename */
1760: for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) {
1761: prefEnd = strrchr(incdir + 1, '/');
1762: if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0)
1763: break;
1764: *prefEnd = '\0';
1765: }
1766: newName = str_concat(incdir, file + i, STR_ADDSLASH);
1.97 christos 1767: fullname = Dir_FindFile(newName, parseIncPath);
1.140 dsl 1768: if (fullname == NULL)
1.1 cgd 1769: fullname = Dir_FindFile(newName, dirSearchPath);
1.103 christos 1770: free(newName);
1.1 cgd 1771: }
1.140 dsl 1772: free(incdir);
1773:
1.142 sjg 1774: if (fullname == NULL) {
1.76 reinoud 1775: /*
1776: * Makefile wasn't found in same directory as included makefile.
1777: * Search for it first on the -I search path,
1778: * then on the .PATH search path, if not found in a -I directory.
1.142 sjg 1779: * If we have a suffix specific path we should use that.
1.76 reinoud 1780: */
1.142 sjg 1781: char *suff;
1.152 dsl 1782: Lst suffPath = NULL;
1.142 sjg 1783:
1.145 christos 1784: if ((suff = strrchr(file, '.'))) {
1.142 sjg 1785: suffPath = Suff_GetPath(suff);
1.152 dsl 1786: if (suffPath != NULL) {
1.142 sjg 1787: fullname = Dir_FindFile(file, suffPath);
1788: }
1789: }
1.105 christos 1790: if (fullname == NULL) {
1.142 sjg 1791: fullname = Dir_FindFile(file, parseIncPath);
1792: if (fullname == NULL) {
1793: fullname = Dir_FindFile(file, dirSearchPath);
1794: }
1.76 reinoud 1795: }
1.142 sjg 1796: }
1.1 cgd 1797: }
1798:
1.76 reinoud 1799: /* Looking for a system file or file still not found */
1.105 christos 1800: if (fullname == NULL) {
1.1 cgd 1801: /*
1.76 reinoud 1802: * Look for it on the system path
1.1 cgd 1803: */
1.123 dsl 1804: fullname = Dir_FindFile(file,
1805: Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath);
1.1 cgd 1806: }
1807:
1.105 christos 1808: if (fullname == NULL) {
1.38 christos 1809: if (!silent)
1.97 christos 1810: Parse_Error(PARSE_FATAL, "Could not find %s", file);
1.1 cgd 1811: return;
1812: }
1813:
1.125 dsl 1814: /* Actually open the file... */
1815: fd = open(fullname, O_RDONLY);
1816: if (fd == -1) {
1.38 christos 1817: if (!silent)
1.97 christos 1818: Parse_Error(PARSE_FATAL, "Cannot open %s", fullname);
1.140 dsl 1819: free(fullname);
1.125 dsl 1820: return;
1.123 dsl 1821: }
1.125 dsl 1822:
1823: /* Start reading from this file next */
1.155 dsl 1824: Parse_SetInput(fullname, 0, fd, NULL, NULL);
1.123 dsl 1825: }
1826:
1827: static void
1828: ParseDoInclude(char *line)
1829: {
1830: char endc; /* the character which ends the file spec */
1831: char *cp; /* current position in file spec */
1832: int silent = (*line != 'i') ? 1 : 0;
1833: char *file = &line[7 + silent];
1834:
1835: /* Skip to delimiter character so we know where to look */
1836: while (*file == ' ' || *file == '\t')
1837: file++;
1838:
1839: if (*file != '"' && *file != '<') {
1840: Parse_Error(PARSE_FATAL,
1841: ".include filename must be delimited by '\"' or '<'");
1842: return;
1843: }
1844:
1845: /*
1846: * Set the search path on which to find the include file based on the
1847: * characters which bracket its name. Angle-brackets imply it's
1848: * a system Makefile while double-quotes imply it's a user makefile
1849: */
1850: if (*file == '<') {
1851: endc = '>';
1852: } else {
1853: endc = '"';
1854: }
1855:
1856: /* Skip to matching delimiter */
1857: for (cp = ++file; *cp && *cp != endc; cp++)
1858: continue;
1859:
1860: if (*cp != endc) {
1861: Parse_Error(PARSE_FATAL,
1862: "Unclosed %cinclude filename. '%c' expected",
1863: '.', endc);
1864: return;
1.1 cgd 1865: }
1.123 dsl 1866: *cp = '\0';
1867:
1868: /*
1869: * Substitute for any variables in the file name before trying to
1870: * find the thing.
1871: */
1872: file = Var_Subst(NULL, file, VAR_CMD, FALSE);
1873:
1874: Parse_include_file(file, endc == '>', silent);
1875: free(file);
1.1 cgd 1876: }
1877:
1.5 cgd 1878:
1879: /*-
1880: *---------------------------------------------------------------------
1.44 aidan 1881: * ParseSetParseFile --
1882: * Set the .PARSEDIR and .PARSEFILE variables to the dirname and
1883: * basename of the given filename
1884: *
1885: * Results:
1886: * None
1887: *
1888: * Side Effects:
1889: * The .PARSEDIR and .PARSEFILE variables are overwritten by the
1890: * dirname and basename of the given filename.
1891: *---------------------------------------------------------------------
1892: */
1893: static void
1.122 dsl 1894: ParseSetParseFile(const char *filename)
1.44 aidan 1895: {
1896: char *slash;
1.122 dsl 1897: char *dirname;
1.145 christos 1898: int len;
1.44 aidan 1899:
1.78 reinoud 1900: slash = strrchr(filename, '/');
1.122 dsl 1901: if (slash == NULL) {
1.70 sjg 1902: Var_Set(".PARSEDIR", ".", VAR_GLOBAL, 0);
1.78 reinoud 1903: Var_Set(".PARSEFILE", filename, VAR_GLOBAL, 0);
1.44 aidan 1904: } else {
1.122 dsl 1905: len = slash - filename;
1.147 joerg 1906: dirname = bmake_malloc(len + 1);
1.145 christos 1907: memcpy(dirname, filename, len);
1.122 dsl 1908: dirname[len] = 0;
1909: Var_Set(".PARSEDIR", dirname, VAR_GLOBAL, 0);
1.70 sjg 1910: Var_Set(".PARSEFILE", slash+1, VAR_GLOBAL, 0);
1.122 dsl 1911: free(dirname);
1.44 aidan 1912: }
1913: }
1914:
1.137 sjg 1915: /*
1916: * Track the makefiles we read - so makefiles can
1917: * set dependencies on them.
1918: * Avoid adding anything more than once.
1919: */
1920:
1921: static void
1922: ParseTrackInput(const char *name)
1923: {
1924: char *old;
1925: char *fp = NULL;
1.141 christos 1926: size_t name_len = strlen(name);
1.137 sjg 1927:
1928: old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp);
1929: if (old) {
1.139 dsl 1930: /* does it contain name? */
1931: for (; old != NULL; old = strchr(old, ' ')) {
1932: if (*old == ' ')
1933: old++;
1934: if (memcmp(old, name, name_len) == 0
1935: && (old[name_len] == 0 || old[name_len] == ' '))
1936: goto cleanup;
1.137 sjg 1937: }
1938: }
1.139 dsl 1939: Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL);
1.137 sjg 1940: cleanup:
1941: if (fp) {
1942: free(fp);
1943: }
1944: }
1945:
1.44 aidan 1946:
1947: /*-
1948: *---------------------------------------------------------------------
1.125 dsl 1949: * Parse_setInput --
1950: * Start Parsing from the given source
1.27 christos 1951: *
1.5 cgd 1952: * Results:
1953: * None
1954: *
1955: * Side Effects:
1956: * A structure is added to the includes Lst and readProc, lineno,
1.125 dsl 1957: * fname and curFile are altered for the new file
1.5 cgd 1958: *---------------------------------------------------------------------
1959: */
1960: void
1.155 dsl 1961: Parse_SetInput(const char *name, int line, int fd, char *(*nextbuf)(void *), void *arg)
1.5 cgd 1962: {
1.155 dsl 1963: char *buf;
1964:
1.127 dsl 1965: if (name == NULL)
1966: name = curFile->fname;
1.139 dsl 1967: else
1968: ParseTrackInput(name);
1.127 dsl 1969:
1970: if (DEBUG(PARSE))
1.155 dsl 1971: fprintf(debug_file, "Parse_SetInput: file %s, line %d, fd %d, nextbuf %p, arg %p\n",
1972: name, line, fd, nextbuf, arg);
1.127 dsl 1973:
1.155 dsl 1974: if (fd == -1 && nextbuf == NULL)
1.125 dsl 1975: /* sanity */
1976: return;
1977:
1.132 dsl 1978: if (curFile != NULL)
1979: /* Save exiting file info */
1980: Lst_AtFront(includes, curFile);
1.5 cgd 1981:
1.125 dsl 1982: /* Allocate and fill in new structure */
1.147 joerg 1983: curFile = bmake_malloc(sizeof *curFile);
1.125 dsl 1984:
1985: /*
1986: * Once the previous state has been saved, we can get down to reading
1987: * the new file. We set up the name of the file to be the absolute
1988: * name of the include file so error messages refer to the right
1989: * place.
1990: */
1991: curFile->fname = name;
1992: curFile->lineno = line;
1.155 dsl 1993: curFile->first_lineno = line;
1.125 dsl 1994: curFile->fd = fd;
1.155 dsl 1995: curFile->nextbuf = nextbuf;
1996: curFile->nextbuf_arg = arg;
1.125 dsl 1997:
1.155 dsl 1998: if (nextbuf == NULL) {
1.125 dsl 1999: /*
2000: * Allocate a 32k data buffer (as stdio seems to).
2001: * Set pointers so that first ParseReadc has to do a file read.
2002: */
1.147 joerg 2003: buf = bmake_malloc(IFILE_BUFLEN);
1.125 dsl 2004: buf[0] = 0;
2005: curFile->P_str = buf;
2006: curFile->P_ptr = buf;
2007: curFile->P_end = buf;
1.127 dsl 2008: curFile->P_buflen = IFILE_BUFLEN;
1.125 dsl 2009: } else {
1.155 dsl 2010: /* Get first block of input data */
2011: buf = curFile->nextbuf(curFile->nextbuf_arg);
2012: if (buf == NULL) {
2013: /* Was all a waste of time ... */
2014: free(curFile);
2015: return;
2016: }
1.125 dsl 2017: curFile->P_str = buf;
2018: curFile->P_ptr = buf;
2019: curFile->P_end = NULL;
2020: }
1.5 cgd 2021:
1.155 dsl 2022: curFile->cond_depth = Cond_save_depth();
2023: ParseSetParseFile(name);
1.5 cgd 2024: }
2025:
2026: #ifdef SYSVINCLUDE
2027: /*-
2028: *---------------------------------------------------------------------
2029: * ParseTraditionalInclude --
2030: * Push to another file.
1.27 christos 2031: *
1.38 christos 2032: * The input is the current line. The file name(s) are
2033: * following the "include".
1.5 cgd 2034: *
2035: * Results:
2036: * None
2037: *
2038: * Side Effects:
2039: * A structure is added to the includes Lst and readProc, lineno,
2040: * fname and curFILE are altered for the new file
2041: *---------------------------------------------------------------------
2042: */
2043: static void
1.84 wiz 2044: ParseTraditionalInclude(char *line)
1.5 cgd 2045: {
2046: char *cp; /* current position in file spec */
1.38 christos 2047: int done = 0;
2048: int silent = (line[0] != 'i') ? 1 : 0;
2049: char *file = &line[silent + 7];
1.123 dsl 2050: char *all_files;
1.5 cgd 2051:
1.111 ginsbach 2052: if (DEBUG(PARSE)) {
1.116 dsl 2053: fprintf(debug_file, "ParseTraditionalInclude: %s\n", file);
1.111 ginsbach 2054: }
2055:
1.5 cgd 2056: /*
2057: * Skip over whitespace
2058: */
1.38 christos 2059: while (isspace((unsigned char)*file))
1.5 cgd 2060: file++;
2061:
1.111 ginsbach 2062: /*
2063: * Substitute for any variables in the file name before trying to
2064: * find the thing.
2065: */
1.123 dsl 2066: all_files = Var_Subst(NULL, file, VAR_CMD, FALSE);
1.111 ginsbach 2067:
1.5 cgd 2068: if (*file == '\0') {
1.97 christos 2069: Parse_Error(PARSE_FATAL,
1.5 cgd 2070: "Filename missing from \"include\"");
2071: return;
2072: }
2073:
1.123 dsl 2074: for (file = all_files; !done; file = cp + 1) {
2075: /* Skip to end of line or next whitespace */
1.38 christos 2076: for (cp = file; *cp && !isspace((unsigned char) *cp); cp++)
2077: continue;
2078:
2079: if (*cp)
2080: *cp = '\0';
2081: else
2082: done = 1;
2083:
1.123 dsl 2084: Parse_include_file(file, FALSE, silent);
1.5 cgd 2085: }
1.123 dsl 2086: free(all_files);
1.5 cgd 2087: }
2088: #endif
2089:
1.1 cgd 2090: /*-
2091: *---------------------------------------------------------------------
2092: * ParseEOF --
2093: * Called when EOF is reached in the current file. If we were reading
2094: * an include file, the includes stack is popped and things set up
2095: * to go back to reading the previous file at the previous location.
2096: *
2097: * Results:
2098: * CONTINUE if there's more to do. DONE if not.
2099: *
2100: * Side Effects:
2101: * The old curFILE, is closed. The includes list is shortened.
2102: * lineno, curFILE, and fname are changed if CONTINUE is returned.
2103: *---------------------------------------------------------------------
2104: */
2105: static int
1.123 dsl 2106: ParseEOF(void)
1.1 cgd 2107: {
1.155 dsl 2108: char *ptr;
2109:
2110: if (curFile->nextbuf != NULL) {
2111: /* eg .for loop data, get next iteration */
2112: ptr = curFile->nextbuf(curFile->nextbuf_arg);
2113: curFile->P_ptr = ptr;
2114: curFile->P_str = ptr;
2115: curFile->lineno = curFile->first_lineno;
2116: if (ptr != NULL) {
2117: /* Iterate again */
2118: return CONTINUE;
2119: }
2120: }
2121:
1.132 dsl 2122: /* Ensure the makefile (or loop) didn't have mismatched conditionals */
2123: Cond_restore_depth(curFile->cond_depth);
1.131 dsl 2124:
1.125 dsl 2125: /* Dispose of curFile info */
2126: /* Leak curFile->fname because all the gnodes have pointers to it */
2127: if (curFile->fd != -1)
2128: close(curFile->fd);
2129: free(curFile->P_str);
2130: free(curFile);
2131:
1.132 dsl 2132: curFile = Lst_DeQueue(includes);
1.1 cgd 2133:
1.152 dsl 2134: if (curFile == NULL) {
1.125 dsl 2135: /* We've run out of input */
1.44 aidan 2136: Var_Delete(".PARSEDIR", VAR_GLOBAL);
2137: Var_Delete(".PARSEFILE", VAR_GLOBAL);
1.125 dsl 2138: return DONE;
1.1 cgd 2139: }
2140:
1.127 dsl 2141: if (DEBUG(PARSE))
1.145 christos 2142: fprintf(debug_file, "ParseEOF: returning to file %s, line %d, fd %d\n",
1.127 dsl 2143: curFile->fname, curFile->lineno, curFile->fd);
2144:
1.125 dsl 2145: /* Restore the PARSEDIR/PARSEFILE variables */
2146: ParseSetParseFile(curFile->fname);
1.1 cgd 2147: return (CONTINUE);
2148: }
2149:
1.127 dsl 2150: #define PARSE_RAW 1
2151: #define PARSE_SKIP 2
2152:
2153: static char *
2154: ParseGetLine(int flags, int *length)
1.5 cgd 2155: {
1.125 dsl 2156: IFile *cf = curFile;
1.127 dsl 2157: char *ptr;
1.125 dsl 2158: char ch;
1.127 dsl 2159: char *line;
2160: char *line_end;
2161: char *escaped;
2162: char *comment;
2163: char *tp;
1.145 christos 2164: int len, dist;
1.125 dsl 2165:
1.127 dsl 2166: /* Loop through blank lines and comment lines */
1.125 dsl 2167: for (;;) {
1.127 dsl 2168: cf->lineno++;
2169: line = cf->P_ptr;
2170: ptr = line;
2171: line_end = line;
2172: escaped = NULL;
2173: comment = NULL;
2174: for (;;) {
2175: ch = *ptr;
2176: if (ch == 0 || (ch == '\\' && ptr[1] == 0)) {
2177: if (cf->P_end == NULL)
2178: /* End of string (aka for loop) data */
2179: break;
2180: /* End of data read from file, read more data */
2181: if (ptr != cf->P_end && (ch != '\\' || ptr + 1 != cf->P_end)) {
2182: Parse_Error(PARSE_FATAL, "Zero byte read from file");
2183: return NULL;
2184: }
2185: /* Move existing data to (near) start of file buffer */
2186: len = cf->P_end - cf->P_ptr;
2187: tp = cf->P_str + 32;
1.145 christos 2188: memmove(tp, cf->P_ptr, len);
1.127 dsl 2189: dist = cf->P_ptr - tp;
2190: /* Update all pointers to reflect moved data */
2191: ptr -= dist;
2192: line -= dist;
2193: line_end -= dist;
2194: if (escaped)
2195: escaped -= dist;
2196: if (comment)
2197: comment -= dist;
2198: cf->P_ptr = tp;
2199: tp += len;
2200: cf->P_end = tp;
2201: /* Try to read more data from file into buffer space */
2202: len = cf->P_str + cf->P_buflen - tp - 32;
2203: if (len <= 0) {
2204: /* We need a bigger buffer to hold this line */
1.147 joerg 2205: tp = bmake_realloc(cf->P_str, cf->P_buflen + IFILE_BUFLEN);
1.146 christos 2206: cf->P_ptr = cf->P_ptr - cf->P_str + tp;
1.127 dsl 2207: cf->P_end = cf->P_end - cf->P_str + tp;
2208: ptr = ptr - cf->P_str + tp;
2209: line = line - cf->P_str + tp;
2210: line_end = line_end - cf->P_str + tp;
2211: if (escaped)
2212: escaped = escaped - cf->P_str + tp;
2213: if (comment)
2214: comment = comment - cf->P_str + tp;
2215: cf->P_str = tp;
2216: tp = cf->P_end;
2217: len += IFILE_BUFLEN;
1.143 dsl 2218: cf->P_buflen += IFILE_BUFLEN;
1.127 dsl 2219: }
1.145 christos 2220: len = read(cf->fd, tp, len);
1.127 dsl 2221: if (len <= 0) {
2222: if (len < 0) {
2223: Parse_Error(PARSE_FATAL, "Makefile read error: %s",
2224: strerror(errno));
2225: return NULL;
2226: }
2227: /* End of file */
2228: break;
2229: }
2230: /* 0 terminate the data, and update end pointer */
2231: tp += len;
2232: cf->P_end = tp;
2233: *tp = 0;
2234: /* Process newly read characters */
2235: continue;
2236: }
2237:
2238: if (ch == '\\') {
2239: /* Don't treat next character as special, remember first one */
2240: if (escaped == NULL)
2241: escaped = ptr;
2242: if (ptr[1] == '\n')
2243: cf->lineno++;
2244: ptr += 2;
2245: line_end = ptr;
2246: continue;
2247: }
2248: if (ch == '#' && comment == NULL) {
2249: /* Remember first '#' for comment stripping */
2250: comment = line_end;
2251: }
2252: ptr++;
1.125 dsl 2253: if (ch == '\n')
1.127 dsl 2254: break;
2255: if (!isspace((unsigned char)ch))
2256: /* We are not interested in trailing whitespace */
2257: line_end = ptr;
2258: }
1.125 dsl 2259:
1.127 dsl 2260: /* Save next 'to be processed' location */
2261: cf->P_ptr = ptr;
2262:
2263: /* Check we have a non-comment, non-blank line */
2264: if (line_end == line || comment == line) {
2265: if (ch == 0)
2266: /* At end of file */
2267: return NULL;
2268: /* Parse another line */
1.125 dsl 2269: continue;
1.127 dsl 2270: }
1.125 dsl 2271:
1.127 dsl 2272: /* We now have a line of data */
2273: *line_end = 0;
1.27 christos 2274:
1.127 dsl 2275: if (flags & PARSE_RAW) {
2276: /* Leave '\' (etc) in line buffer (eg 'for' lines) */
2277: *length = line_end - line;
2278: return line;
2279: }
1.5 cgd 2280:
1.127 dsl 2281: if (flags & PARSE_SKIP) {
2282: /* Completely ignore non-directives */
2283: if (line[0] != '.')
2284: continue;
2285: /* We could do more of the .else/.elif/.endif checks here */
2286: }
2287: break;
2288: }
1.5 cgd 2289:
1.127 dsl 2290: /* Brutally ignore anything after a non-escaped '#' in non-commands */
2291: if (comment != NULL && line[0] != '\t') {
2292: line_end = comment;
2293: *line_end = 0;
2294: }
1.5 cgd 2295:
1.127 dsl 2296: /* If we didn't see a '\\' then the in-situ data is fine */
2297: if (escaped == NULL) {
2298: *length = line_end - line;
2299: return line;
2300: }
1.5 cgd 2301:
1.127 dsl 2302: /* Remove escapes from '\n' and '#' */
2303: tp = ptr = escaped;
2304: escaped = line;
2305: for (; ; *tp++ = ch) {
2306: ch = *ptr++;
2307: if (ch != '\\') {
2308: if (ch == 0)
2309: break;
2310: continue;
2311: }
1.5 cgd 2312:
1.127 dsl 2313: ch = *ptr++;
2314: if (ch == 0) {
2315: /* Delete '\\' at end of buffer */
2316: tp--;
2317: break;
2318: }
1.27 christos 2319:
1.130 dsl 2320: if (ch == '#' && line[0] != '\t')
2321: /* Delete '\\' from before '#' on non-command lines */
1.127 dsl 2322: continue;
1.27 christos 2323:
1.127 dsl 2324: if (ch != '\n') {
2325: /* Leave '\\' in buffer for later */
2326: *tp++ = '\\';
2327: /* Make sure we don't delete an escaped ' ' from the line end */
2328: escaped = tp + 1;
2329: continue;
2330: }
1.27 christos 2331:
1.128 dsl 2332: /* Escaped '\n' replace following whitespace with a single ' ' */
1.127 dsl 2333: while (ptr[0] == ' ' || ptr[0] == '\t')
2334: ptr++;
2335: ch = ' ';
2336: }
1.27 christos 2337:
1.127 dsl 2338: /* Delete any trailing spaces - eg from empty continuations */
2339: while (tp > escaped && isspace((unsigned char)tp[-1]))
2340: tp--;
1.27 christos 2341:
1.127 dsl 2342: *tp = 0;
2343: *length = tp - line;
1.5 cgd 2344: return line;
2345: }
1.1 cgd 2346:
2347: /*-
2348: *---------------------------------------------------------------------
2349: * ParseReadLine --
2350: * Read an entire line from the input file. Called only by Parse_File.
2351: *
2352: * Results:
2353: * A line w/o its newline
2354: *
2355: * Side Effects:
2356: * Only those associated with reading a character
2357: *---------------------------------------------------------------------
2358: */
2359: static char *
1.84 wiz 2360: ParseReadLine(void)
1.1 cgd 2361: {
1.9 jtc 2362: char *line; /* Result */
1.1 cgd 2363: int lineLength; /* Length of result */
1.95 enami 2364: int lineno; /* Saved line # */
1.151 dsl 2365: int rval;
1.1 cgd 2366:
1.5 cgd 2367: for (;;) {
1.127 dsl 2368: line = ParseGetLine(0, &lineLength);
2369: if (line == NULL)
2370: return NULL;
1.1 cgd 2371:
1.127 dsl 2372: if (line[0] != '.')
2373: return line;
1.121 dsl 2374:
2375: /*
1.127 dsl 2376: * The line might be a conditional. Ask the conditional module
2377: * about it and act accordingly
1.121 dsl 2378: */
1.127 dsl 2379: switch (Cond_Eval(line)) {
2380: case COND_SKIP:
2381: /* Skip to next conditional that evaluates to COND_PARSE. */
2382: do {
2383: line = ParseGetLine(PARSE_SKIP, &lineLength);
2384: } while (line && Cond_Eval(line) != COND_PARSE);
2385: if (line == NULL)
1.121 dsl 2386: break;
1.127 dsl 2387: continue;
2388: case COND_PARSE:
2389: continue;
2390: case COND_INVALID: /* Not a conditional line */
1.151 dsl 2391: /* Check for .for loops */
2392: rval = For_Eval(line);
2393: if (rval == 0)
2394: /* Not a .for line */
1.1 cgd 2395: break;
1.151 dsl 2396: if (rval < 0)
2397: /* Syntax error - error printed, ignore line */
2398: continue;
2399: /* Start of a .for loop */
1.127 dsl 2400: lineno = curFile->lineno;
1.151 dsl 2401: /* Accumulate loop lines until matching .endfor */
1.121 dsl 2402: do {
1.127 dsl 2403: line = ParseGetLine(PARSE_RAW, &lineLength);
1.121 dsl 2404: if (line == NULL) {
2405: Parse_Error(PARSE_FATAL,
2406: "Unexpected end of file in for loop.\n");
1.5 cgd 2407: break;
1.121 dsl 2408: }
1.151 dsl 2409: } while (For_Accum(line));
1.127 dsl 2410: /* Stash each iteration as a new 'input file' */
2411: For_Run(lineno);
2412: /* Read next line from for-loop buffer */
2413: continue;
1.1 cgd 2414: }
1.127 dsl 2415: return (line);
1.1 cgd 2416: }
2417: }
2418:
2419: /*-
2420: *-----------------------------------------------------------------------
2421: * ParseFinishLine --
2422: * Handle the end of a dependency group.
2423: *
2424: * Results:
2425: * Nothing.
2426: *
2427: * Side Effects:
2428: * inLine set FALSE. 'targets' list destroyed.
2429: *
2430: *-----------------------------------------------------------------------
2431: */
2432: static void
1.84 wiz 2433: ParseFinishLine(void)
1.1 cgd 2434: {
2435: if (inLine) {
1.119 dsl 2436: Lst_ForEach(targets, Suff_EndTransform, NULL);
1.97 christos 2437: Lst_Destroy(targets, ParseHasCommands);
1.9 jtc 2438: targets = NULL;
1.1 cgd 2439: inLine = FALSE;
2440: }
2441: }
1.27 christos 2442:
1.1 cgd 2443:
2444: /*-
2445: *---------------------------------------------------------------------
2446: * Parse_File --
2447: * Parse a file into its component parts, incorporating it into the
2448: * current dependency graph. This is the main function and controls
2449: * almost every other function in this module
2450: *
1.84 wiz 2451: * Input:
2452: * name the name of the file being read
1.125 dsl 2453: * fd Open file to makefile to parse
1.84 wiz 2454: *
1.1 cgd 2455: * Results:
2456: * None
2457: *
2458: * Side Effects:
1.125 dsl 2459: * closes fd.
1.1 cgd 2460: * Loads. Nodes are added to the list of all targets, nodes and links
2461: * are added to the dependency graph. etc. etc. etc.
2462: *---------------------------------------------------------------------
2463: */
2464: void
1.125 dsl 2465: Parse_File(const char *name, int fd)
1.1 cgd 2466: {
1.117 dsl 2467: char *cp; /* pointer into the line */
2468: char *line; /* the line we're working on */
1.1 cgd 2469:
2470: inLine = FALSE;
2471: fatals = 0;
1.44 aidan 2472:
1.155 dsl 2473: Parse_SetInput(name, 0, fd, NULL, NULL);
1.1 cgd 2474:
2475: do {
1.127 dsl 2476: for (; (line = ParseReadLine()) != NULL; ) {
1.120 dsl 2477: if (DEBUG(PARSE))
1.145 christos 2478: fprintf(debug_file, "ParseReadLine (%d): '%s'\n",
2479: curFile->lineno, line);
1.1 cgd 2480: if (*line == '.') {
2481: /*
2482: * Lines that begin with the special character are either
2483: * include or undef directives.
2484: */
1.127 dsl 2485: for (cp = line + 1; isspace((unsigned char)*cp); cp++) {
1.1 cgd 2486: continue;
2487: }
1.38 christos 2488: if (strncmp(cp, "include", 7) == 0 ||
1.127 dsl 2489: ((cp[0] == 's' || cp[0] == '-') &&
2490: strncmp(&cp[1], "include", 7) == 0)) {
1.97 christos 2491: ParseDoInclude(cp);
1.117 dsl 2492: continue;
2493: }
2494: if (strncmp(cp, "undef", 5) == 0) {
1.1 cgd 2495: char *cp2;
1.127 dsl 2496: for (cp += 5; isspace((unsigned char) *cp); cp++)
1.1 cgd 2497: continue;
1.9 jtc 2498: for (cp2 = cp; !isspace((unsigned char) *cp2) &&
1.127 dsl 2499: (*cp2 != '\0'); cp2++)
1.1 cgd 2500: continue;
2501: *cp2 = '\0';
2502: Var_Delete(cp, VAR_GLOBAL);
1.117 dsl 2503: continue;
1.136 sjg 2504: } else if (strncmp(cp, "export", 6) == 0) {
2505: for (cp += 6; isspace((unsigned char) *cp); cp++)
2506: continue;
2507: Var_Export(cp, 1);
2508: continue;
1.1 cgd 2509: }
2510: }
1.27 christos 2511:
1.6 jtc 2512: if (*line == '\t') {
1.1 cgd 2513: /*
1.6 jtc 2514: * If a line starts with a tab, it can only hope to be
2515: * a creation command.
1.1 cgd 2516: */
1.133 dsl 2517: cp = line + 1;
1.127 dsl 2518: shellCommand:
1.133 dsl 2519: for (; isspace ((unsigned char)*cp); cp++) {
1.1 cgd 2520: continue;
2521: }
2522: if (*cp) {
1.117 dsl 2523: if (!inLine)
1.97 christos 2524: Parse_Error(PARSE_FATAL,
1.25 christos 2525: "Unassociated shell command \"%s\"",
1.1 cgd 2526: cp);
1.117 dsl 2527: /*
2528: * So long as it's not a blank line and we're actually
2529: * in a dependency spec, add the command to the list of
2530: * commands of all targets in the dependency spec
2531: */
1.129 christos 2532: if (targets) {
1.147 joerg 2533: cp = bmake_strdup(cp);
1.129 christos 2534: Lst_ForEach(targets, ParseAddCmd, cp);
1.117 dsl 2535: #ifdef CLEANUP
1.129 christos 2536: Lst_AtEnd(targCmds, cp);
1.117 dsl 2537: #endif
1.129 christos 2538: }
1.1 cgd 2539: }
1.117 dsl 2540: continue;
2541: }
2542:
1.5 cgd 2543: #ifdef SYSVINCLUDE
1.117 dsl 2544: if (((strncmp(line, "include", 7) == 0 &&
2545: isspace((unsigned char) line[7])) ||
2546: ((line[0] == 's' || line[0] == '-') &&
2547: strncmp(&line[1], "include", 7) == 0 &&
2548: isspace((unsigned char) line[8]))) &&
2549: strchr(line, ':') == NULL) {
1.5 cgd 2550: /*
2551: * It's an S3/S5-style "include".
2552: */
1.97 christos 2553: ParseTraditionalInclude(line);
1.117 dsl 2554: continue;
2555: }
1.5 cgd 2556: #endif
1.117 dsl 2557: if (Parse_IsVar(line)) {
1.1 cgd 2558: ParseFinishLine();
1.97 christos 2559: Parse_DoVar(line, VAR_GLOBAL);
1.117 dsl 2560: continue;
2561: }
2562:
1.127 dsl 2563: #ifndef POSIX
1.117 dsl 2564: /*
2565: * To make life easier on novices, if the line is indented we
2566: * first make sure the line has a dependency operator in it.
2567: * If it doesn't have an operator and we're in a dependency
2568: * line's script, we assume it's actually a shell command
2569: * and add it to the current list of targets.
2570: */
2571: cp = line;
2572: if (isspace((unsigned char) line[0])) {
1.127 dsl 2573: while ((*cp != '\0') && isspace((unsigned char) *cp))
1.117 dsl 2574: cp++;
2575: while (*cp && (ParseIsEscaped(line, cp) ||
1.77 christos 2576: (*cp != ':') && (*cp != '!'))) {
1.117 dsl 2577: cp++;
2578: }
1.127 dsl 2579: if (*cp == '\0') {
2580: if (inLine) {
2581: Parse_Error(PARSE_WARNING,
2582: "Shell command needs a leading tab");
2583: goto shellCommand;
2584: }
2585: }
2586: }
1.11 mycroft 2587: #endif
1.127 dsl 2588: ParseFinishLine();
1.27 christos 2589:
1.127 dsl 2590: /*
2591: * For some reason - probably to make the parser impossible -
2592: * a ';' can be used to separate commands from dependencies.
2593: * No attempt is made to avoid ';' inside substitution patterns.
2594: */
2595: for (cp = line; *cp != 0; cp++) {
2596: if (*cp == '\\' && cp[1] != 0) {
2597: cp++;
2598: continue;
1.117 dsl 2599: }
1.127 dsl 2600: if (*cp == ';')
2601: break;
1.117 dsl 2602: }
1.127 dsl 2603: if (*cp != 0)
2604: /* Terminate the dependency list at the ';' */
1.133 dsl 2605: *cp++ = 0;
1.127 dsl 2606: else
2607: cp = NULL;
1.1 cgd 2608:
1.127 dsl 2609: /*
2610: * We now know it's a dependency line so it needs to have all
2611: * variables expanded before being parsed. Tell the variable
2612: * module to complain if some variable is undefined...
2613: */
2614: line = Var_Subst(NULL, line, VAR_CMD, TRUE);
1.27 christos 2615:
1.117 dsl 2616: /*
2617: * Need a non-circular list for the target nodes
2618: */
2619: if (targets)
1.152 dsl 2620: Lst_Destroy(targets, NULL);
1.9 jtc 2621:
1.117 dsl 2622: targets = Lst_Init(FALSE);
2623: inLine = TRUE;
1.27 christos 2624:
1.117 dsl 2625: ParseDoDependency(line);
1.127 dsl 2626: free(line);
2627:
2628: /* If there were commands after a ';', add them now */
2629: if (cp != NULL) {
2630: goto shellCommand;
2631: }
1.1 cgd 2632: }
2633: /*
1.27 christos 2634: * Reached EOF, but it may be just EOF of an include file...
1.1 cgd 2635: */
1.123 dsl 2636: } while (ParseEOF() == CONTINUE);
1.1 cgd 2637:
2638: if (fatals) {
1.63 christos 2639: (void)fprintf(stderr,
2640: "%s: Fatal errors encountered -- cannot continue\n",
2641: progname);
1.64 sjg 2642: PrintOnError(NULL);
1.103 christos 2643: exit(1);
1.1 cgd 2644: }
2645: }
2646:
2647: /*-
2648: *---------------------------------------------------------------------
2649: * Parse_Init --
2650: * initialize the parsing module
2651: *
2652: * Results:
2653: * none
2654: *
2655: * Side Effects:
2656: * the parseIncPath list is initialized...
2657: *---------------------------------------------------------------------
2658: */
1.5 cgd 2659: void
1.84 wiz 2660: Parse_Init(void)
1.1 cgd 2661: {
1.152 dsl 2662: mainNode = NULL;
1.97 christos 2663: parseIncPath = Lst_Init(FALSE);
2664: sysIncPath = Lst_Init(FALSE);
2665: defIncPath = Lst_Init(FALSE);
2666: includes = Lst_Init(FALSE);
1.45 mycroft 2667: #ifdef CLEANUP
1.97 christos 2668: targCmds = Lst_Init(FALSE);
1.45 mycroft 2669: #endif
1.1 cgd 2670: }
1.9 jtc 2671:
2672: void
1.84 wiz 2673: Parse_End(void)
1.9 jtc 2674: {
1.45 mycroft 2675: #ifdef CLEANUP
1.106 christos 2676: Lst_Destroy(targCmds, (FreeProc *)free);
1.9 jtc 2677: if (targets)
1.152 dsl 2678: Lst_Destroy(targets, NULL);
1.74 tv 2679: Lst_Destroy(defIncPath, Dir_Destroy);
1.9 jtc 2680: Lst_Destroy(sysIncPath, Dir_Destroy);
2681: Lst_Destroy(parseIncPath, Dir_Destroy);
1.152 dsl 2682: Lst_Destroy(includes, NULL); /* Should be empty now */
1.45 mycroft 2683: #endif
1.9 jtc 2684: }
1.27 christos 2685:
1.1 cgd 2686:
2687: /*-
2688: *-----------------------------------------------------------------------
2689: * Parse_MainName --
2690: * Return a Lst of the main target to create for main()'s sake. If
2691: * no such target exists, we Punt with an obnoxious error message.
2692: *
2693: * Results:
2694: * A Lst of the single node to create.
2695: *
2696: * Side Effects:
2697: * None.
2698: *
2699: *-----------------------------------------------------------------------
2700: */
2701: Lst
1.84 wiz 2702: Parse_MainName(void)
1.1 cgd 2703: {
1.37 fair 2704: Lst mainList; /* result list */
1.1 cgd 2705:
1.97 christos 2706: mainList = Lst_Init(FALSE);
1.1 cgd 2707:
1.152 dsl 2708: if (mainNode == NULL) {
1.97 christos 2709: Punt("no target to make.");
1.1 cgd 2710: /*NOTREACHED*/
2711: } else if (mainNode->type & OP_DOUBLEDEP) {
1.119 dsl 2712: (void)Lst_AtEnd(mainList, mainNode);
1.37 fair 2713: Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW);
1.1 cgd 2714: }
1.5 cgd 2715: else
1.119 dsl 2716: (void)Lst_AtEnd(mainList, mainNode);
1.81 pk 2717: Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL);
1.37 fair 2718: return (mainList);
1.59 christos 2719: }
2720:
2721: /*-
2722: *-----------------------------------------------------------------------
2723: * ParseMark --
2724: * Add the filename and lineno to the GNode so that we remember
2725: * where it was first defined.
2726: *
2727: * Side Effects:
2728: * None.
2729: *
2730: *-----------------------------------------------------------------------
2731: */
2732: static void
1.84 wiz 2733: ParseMark(GNode *gn)
1.59 christos 2734: {
1.125 dsl 2735: gn->fname = curFile->fname;
2736: gn->lineno = curFile->lineno;
1.1 cgd 2737: }
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