Annotation of src/usr.bin/make/parse.c, Revision 1.149
1.149 ! christos 1: /* $NetBSD: parse.c,v 1.148 2008/10/29 15:37:08 sjg 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
1.149 ! christos 72: static char rcsid[] = "$NetBSD: parse.c,v 1.148 2008/10/29 15:37:08 sjg Exp $";
1.36 lukem 73: #else
1.34 christos 74: #include <sys/cdefs.h>
1.1 cgd 75: #ifndef lint
1.15 christos 76: #if 0
1.27 christos 77: static char sccsid[] = "@(#)parse.c 8.3 (Berkeley) 3/19/94";
1.15 christos 78: #else
1.149 ! christos 79: __RCSID("$NetBSD: parse.c,v 1.148 2008/10/29 15:37:08 sjg Exp $");
1.15 christos 80: #endif
1.1 cgd 81: #endif /* not lint */
1.36 lukem 82: #endif
1.1 cgd 83:
84: /*-
85: * parse.c --
86: * Functions to parse a makefile.
87: *
88: * One function, Parse_Init, must be called before any functions
89: * in this module are used. After that, the function Parse_File is the
90: * main entry point and controls most of the other functions in this
91: * module.
92: *
93: * Most important structures are kept in Lsts. Directories for
1.123 dsl 94: * the .include "..." function are kept in the 'parseIncPath' Lst, while
95: * those for the .include <...> are kept in the 'sysIncPath' Lst. The
1.1 cgd 96: * targets currently being defined are kept in the 'targets' Lst.
97: *
98: * The variables 'fname' and 'lineno' are used to track the name
99: * of the current file and the line number in that file so that error
100: * messages can be more meaningful.
101: *
102: * Interface:
103: * Parse_Init Initialization function which must be
104: * called before anything else in this module
105: * is used.
106: *
1.9 jtc 107: * Parse_End Cleanup the module
108: *
1.1 cgd 109: * Parse_File Function used to parse a makefile. It must
110: * be given the name of the file, which should
111: * already have been opened, and a function
112: * to call to read a character from the file.
113: *
114: * Parse_IsVar Returns TRUE if the given line is a
115: * variable assignment. Used by MainParseArgs
116: * to determine if an argument is a target
117: * or a variable assignment. Used internally
118: * for pretty much the same thing...
119: *
120: * Parse_Error Function called when an error occurs in
121: * parsing. Used by the variable and
122: * conditional modules.
123: * Parse_MainName Returns a Lst of the main target to create.
124: */
125:
1.84 wiz 126: #include <ctype.h>
127: #include <errno.h>
1.125 dsl 128: #include <fcntl.h>
1.5 cgd 129: #include <stdarg.h>
130: #include <stdio.h>
1.84 wiz 131:
1.1 cgd 132: #include "make.h"
1.5 cgd 133: #include "hash.h"
134: #include "dir.h"
135: #include "job.h"
1.1 cgd 136: #include "buf.h"
137: #include "pathnames.h"
138:
139: /*
140: * These values are returned by ParseEOF to tell Parse_File whether to
141: * CONTINUE parsing, i.e. it had only reached the end of an include file,
142: * or if it's DONE.
143: */
144: #define CONTINUE 1
145: #define DONE 0
146: static Lst targets; /* targets we're working on */
1.45 mycroft 147: #ifdef CLEANUP
1.9 jtc 148: static Lst targCmds; /* command lines for targets */
1.45 mycroft 149: #endif
1.1 cgd 150: static Boolean inLine; /* true if currently in a dependency
151: * line or its commands */
152: static int fatals = 0;
153:
154: static GNode *mainNode; /* The main target to create. This is the
155: * first target on the first dependency
156: * line in the first makefile */
157: typedef struct IFile {
1.122 dsl 158: const char *fname; /* name of file */
1.145 christos 159: int lineno; /* line number in file */
1.125 dsl 160: int fd; /* the open file */
1.145 christos 161: int cond_depth; /* 'if' nesting when file opened */
1.123 dsl 162: char *P_str; /* point to base of string buffer */
163: char *P_ptr; /* point to next char of string buffer */
1.125 dsl 164: char *P_end; /* point to the end of string buffer */
1.145 christos 165: int P_buflen; /* current size of file buffer */
1.5 cgd 166: } IFile;
1.1 cgd 167:
1.127 dsl 168: #define IFILE_BUFLEN 0x8000
1.125 dsl 169: static IFile *curFile;
1.82 reinoud 170:
171:
172: /*
173: * Definitions for handling #include specifications
174: */
175:
1.123 dsl 176: static Lst includes; /* stack of IFiles generated by .includes */
1.1 cgd 177: Lst parseIncPath; /* list of directories for "..." includes */
178: Lst sysIncPath; /* list of directories for <...> includes */
1.74 tv 179: Lst defIncPath; /* default directories for <...> includes */
1.1 cgd 180:
181: /*-
182: * specType contains the SPECial TYPE of the current target. It is
183: * Not if the target is unspecial. If it *is* special, however, the children
184: * are linked as children of the parent but not vice versa. This variable is
185: * set in ParseDoDependency
186: */
187: typedef enum {
188: Begin, /* .BEGIN */
189: Default, /* .DEFAULT */
190: End, /* .END */
191: Ignore, /* .IGNORE */
192: Includes, /* .INCLUDES */
193: Interrupt, /* .INTERRUPT */
194: Libs, /* .LIBS */
195: MFlags, /* .MFLAGS or .MAKEFLAGS */
196: Main, /* .MAIN and we don't have anything user-specified to
197: * make */
1.5 cgd 198: NoExport, /* .NOEXPORT */
1.32 gwr 199: NoPath, /* .NOPATH */
1.1 cgd 200: Not, /* Not special */
1.75 tv 201: NotParallel, /* .NOTPARALLEL */
1.1 cgd 202: Null, /* .NULL */
1.75 tv 203: ExObjdir, /* .OBJDIR */
1.1 cgd 204: Order, /* .ORDER */
1.18 christos 205: Parallel, /* .PARALLEL */
1.5 cgd 206: ExPath, /* .PATH */
1.22 christos 207: Phony, /* .PHONY */
1.48 sjg 208: #ifdef POSIX
209: Posix, /* .POSIX */
210: #endif
1.1 cgd 211: Precious, /* .PRECIOUS */
1.5 cgd 212: ExShell, /* .SHELL */
1.1 cgd 213: Silent, /* .SILENT */
214: SingleShell, /* .SINGLESHELL */
215: Suffixes, /* .SUFFIXES */
1.18 christos 216: Wait, /* .WAIT */
1.5 cgd 217: Attribute /* Generic attribute */
1.1 cgd 218: } ParseSpecial;
219:
1.5 cgd 220: static ParseSpecial specType;
1.1 cgd 221:
1.77 christos 222: #define LPAREN '('
223: #define RPAREN ')'
1.1 cgd 224: /*
225: * Predecessor node for handling .ORDER. Initialized to NILGNODE when .ORDER
226: * seen, then set to each successive source on the line.
227: */
228: static GNode *predecessor;
229:
230: /*
231: * The parseKeywords table is searched using binary search when deciding
232: * if a target or source is special. The 'spec' field is the ParseSpecial
233: * type of the keyword ("Not" if the keyword isn't special as a target) while
234: * the 'op' field is the operator to apply to the list of targets if the
235: * keyword is used as a source ("0" if the keyword isn't special as a source)
236: */
237: static struct {
1.93 christos 238: const char *name; /* Name of keyword */
1.1 cgd 239: ParseSpecial spec; /* Type when used as a target */
240: int op; /* Operator when used as a source */
241: } parseKeywords[] = {
242: { ".BEGIN", Begin, 0 },
243: { ".DEFAULT", Default, 0 },
244: { ".END", End, 0 },
245: { ".EXEC", Attribute, OP_EXEC },
246: { ".IGNORE", Ignore, OP_IGNORE },
247: { ".INCLUDES", Includes, 0 },
248: { ".INTERRUPT", Interrupt, 0 },
249: { ".INVISIBLE", Attribute, OP_INVISIBLE },
250: { ".JOIN", Attribute, OP_JOIN },
251: { ".LIBS", Libs, 0 },
1.29 christos 252: { ".MADE", Attribute, OP_MADE },
1.1 cgd 253: { ".MAIN", Main, 0 },
254: { ".MAKE", Attribute, OP_MAKE },
255: { ".MAKEFLAGS", MFlags, 0 },
256: { ".MFLAGS", MFlags, 0 },
1.32 gwr 257: { ".NOPATH", NoPath, OP_NOPATH },
1.1 cgd 258: { ".NOTMAIN", Attribute, OP_NOTMAIN },
259: { ".NOTPARALLEL", NotParallel, 0 },
1.18 christos 260: { ".NO_PARALLEL", NotParallel, 0 },
1.1 cgd 261: { ".NULL", Null, 0 },
1.75 tv 262: { ".OBJDIR", ExObjdir, 0 },
1.14 ws 263: { ".OPTIONAL", Attribute, OP_OPTIONAL },
1.1 cgd 264: { ".ORDER", Order, 0 },
1.18 christos 265: { ".PARALLEL", Parallel, 0 },
1.5 cgd 266: { ".PATH", ExPath, 0 },
1.22 christos 267: { ".PHONY", Phony, OP_PHONY },
1.48 sjg 268: #ifdef POSIX
269: { ".POSIX", Posix, 0 },
270: #endif
1.1 cgd 271: { ".PRECIOUS", Precious, OP_PRECIOUS },
272: { ".RECURSIVE", Attribute, OP_MAKE },
1.5 cgd 273: { ".SHELL", ExShell, 0 },
1.1 cgd 274: { ".SILENT", Silent, OP_SILENT },
275: { ".SINGLESHELL", SingleShell, 0 },
276: { ".SUFFIXES", Suffixes, 0 },
277: { ".USE", Attribute, OP_USE },
1.71 christos 278: { ".USEBEFORE", Attribute, OP_USEBEFORE },
1.18 christos 279: { ".WAIT", Wait, 0 },
1.1 cgd 280: };
281:
1.84 wiz 282: static int ParseIsEscaped(const char *, const char *);
1.122 dsl 283: static void ParseErrorInternal(const char *, size_t, int, const char *, ...)
1.53 is 284: __attribute__((__format__(__printf__, 4, 5)));
1.127 dsl 285: static void ParseVErrorInternal(FILE *, const char *, size_t, int, const char *, va_list)
286: __attribute__((__format__(__printf__, 5, 0)));
1.120 dsl 287: static int ParseFindKeyword(const char *);
1.84 wiz 288: static int ParseLinkSrc(ClientData, ClientData);
289: static int ParseDoOp(ClientData, ClientData);
1.120 dsl 290: static void ParseDoSrc(int, const char *);
1.84 wiz 291: static int ParseFindMain(ClientData, ClientData);
292: static int ParseAddDir(ClientData, ClientData);
293: static int ParseClearPath(ClientData, ClientData);
294: static void ParseDoDependency(char *);
295: static int ParseAddCmd(ClientData, ClientData);
296: static void ParseHasCommands(ClientData);
297: static void ParseDoInclude(char *);
1.122 dsl 298: static void ParseSetParseFile(const char *);
1.5 cgd 299: #ifdef SYSVINCLUDE
1.84 wiz 300: static void ParseTraditionalInclude(char *);
1.5 cgd 301: #endif
1.123 dsl 302: static int ParseEOF(void);
1.84 wiz 303: static char *ParseReadLine(void);
304: static void ParseFinishLine(void);
305: static void ParseMark(GNode *);
1.5 cgd 306:
1.56 christos 307: extern int maxJobs;
308:
1.77 christos 309:
310: /*-
311: *----------------------------------------------------------------------
312: * ParseIsEscaped --
313: * Check if the current character is escaped on the current line
314: *
315: * Results:
316: * 0 if the character is not backslash escaped, 1 otherwise
317: *
318: * Side Effects:
319: * None
320: *----------------------------------------------------------------------
321: */
322: static int
1.84 wiz 323: ParseIsEscaped(const char *line, const char *c)
1.77 christos 324: {
325: int active = 0;
326: for (;;) {
327: if (line == c)
328: return active;
329: if (*--c != '\\')
330: return active;
331: active = !active;
332: }
333: }
334:
1.1 cgd 335: /*-
336: *----------------------------------------------------------------------
337: * ParseFindKeyword --
338: * Look in the table of keywords for one matching the given string.
339: *
1.84 wiz 340: * Input:
341: * str String to find
342: *
1.1 cgd 343: * Results:
344: * The index of the keyword, or -1 if it isn't there.
345: *
346: * Side Effects:
347: * None
348: *----------------------------------------------------------------------
349: */
350: static int
1.120 dsl 351: ParseFindKeyword(const char *str)
1.1 cgd 352: {
1.84 wiz 353: int start, end, cur;
354: int diff;
1.27 christos 355:
1.1 cgd 356: start = 0;
357: end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1;
358:
359: do {
360: cur = start + ((end - start) / 2);
1.103 christos 361: diff = strcmp(str, parseKeywords[cur].name);
1.1 cgd 362:
363: if (diff == 0) {
364: return (cur);
365: } else if (diff < 0) {
366: end = cur - 1;
367: } else {
368: start = cur + 1;
369: }
370: } while (start <= end);
371: return (-1);
372: }
373:
374: /*-
1.38 christos 375: * ParseVErrorInternal --
1.1 cgd 376: * Error message abort function for parsing. Prints out the context
377: * of the error (line number and file) as well as the message with
378: * two optional arguments.
379: *
380: * Results:
381: * None
382: *
383: * Side Effects:
384: * "fatals" is incremented if the level is PARSE_FATAL.
385: */
386: /* VARARGS */
1.38 christos 387: static void
1.127 dsl 388: ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type,
1.122 dsl 389: const char *fmt, va_list ap)
1.38 christos 390: {
1.56 christos 391: static Boolean fatal_warning_error_printed = FALSE;
392:
1.148 sjg 393: (void)fprintf(f, "%s: ", progname);
1.63 christos 394:
1.148 sjg 395: if (cfname != NULL) {
396: (void)fprintf(f, "\"");
397: if (*cfname != '/' && strcmp(cfname, "(stdin)") != 0) {
398: char *cp;
399: const char *dir;
1.55 sjg 400:
1.148 sjg 401: /*
402: * Nothing is more anoying than not knowing
403: * which Makefile is the culprit.
404: */
405: dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp);
406: if (dir == NULL || *dir == '\0' ||
407: (*dir == '.' && dir[1] == '\0'))
408: dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp);
409: if (dir == NULL)
410: dir = ".";
411:
412: (void)fprintf(f, "%s/%s", dir, cfname);
413: } else
414: (void)fprintf(f, "%s", cfname);
1.63 christos 415:
1.148 sjg 416: (void)fprintf(f, "\" line %d: ", (int)clineno);
417: }
1.38 christos 418: if (type == PARSE_WARNING)
1.127 dsl 419: (void)fprintf(f, "warning: ");
420: (void)vfprintf(f, fmt, ap);
421: (void)fprintf(f, "\n");
422: (void)fflush(f);
1.56 christos 423: if (type == PARSE_FATAL || parseWarnFatal)
1.38 christos 424: fatals += 1;
1.56 christos 425: if (parseWarnFatal && !fatal_warning_error_printed) {
426: Error("parsing warnings being treated as errors");
427: fatal_warning_error_printed = TRUE;
428: }
1.38 christos 429: }
430:
431: /*-
432: * ParseErrorInternal --
433: * Error function
434: *
435: * Results:
436: * None
437: *
438: * Side Effects:
439: * None
440: */
441: /* VARARGS */
442: static void
1.122 dsl 443: ParseErrorInternal(const char *cfname, size_t clineno, int type,
444: const char *fmt, ...)
1.38 christos 445: {
446: va_list ap;
1.84 wiz 447:
1.38 christos 448: va_start(ap, fmt);
1.127 dsl 449: ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap);
1.38 christos 450: va_end(ap);
1.127 dsl 451:
1.131 dsl 452: if (debug_file != stderr && debug_file != stdout) {
1.127 dsl 453: va_start(ap, fmt);
1.131 dsl 454: ParseVErrorInternal(debug_file, cfname, clineno, type, fmt, ap);
1.127 dsl 455: va_end(ap);
456: }
1.38 christos 457: }
458:
459: /*-
460: * Parse_Error --
461: * External interface to ParseErrorInternal; uses the default filename
462: * Line number.
463: *
464: * Results:
465: * None
466: *
467: * Side Effects:
468: * None
469: */
470: /* VARARGS */
1.1 cgd 471: void
1.93 christos 472: Parse_Error(int type, const char *fmt, ...)
1.1 cgd 473: {
474: va_list ap;
1.84 wiz 475:
1.5 cgd 476: va_start(ap, fmt);
1.148 sjg 477: if (curFile == (IFile *)NIL) {
478: /* avoid segfault */
479: static IFile intFile = {
1.149 ! christos 480: NULL, 0, 0, 0, NULL, NULL, NULL, 0
1.148 sjg 481: };
482: curFile = &intFile;
483: }
1.127 dsl 484: ParseVErrorInternal(stderr, curFile->fname, curFile->lineno,
485: type, fmt, ap);
1.1 cgd 486: va_end(ap);
1.127 dsl 487:
1.131 dsl 488: if (debug_file != stderr && debug_file != stdout) {
1.127 dsl 489: va_start(ap, fmt);
490: ParseVErrorInternal(debug_file, curFile->fname, curFile->lineno,
491: type, fmt, ap);
492: va_end(ap);
493: }
1.148 sjg 494: /*
495: * if we get this far, make sure we don't leave curFile
496: * pointing to our dummy one.
497: */
498: if (curFile->fname == NULL) {
499: curFile = (IFile *)NIL;
500: }
1.1 cgd 501: }
502:
503: /*-
504: *---------------------------------------------------------------------
505: * ParseLinkSrc --
506: * Link the parent node to its new child. Used in a Lst_ForEach by
507: * ParseDoDependency. If the specType isn't 'Not', the parent
508: * isn't linked as a parent of the child.
509: *
1.84 wiz 510: * Input:
511: * pgnp The parent node
512: * cgpn The child node
513: *
1.1 cgd 514: * Results:
515: * Always = 0
516: *
517: * Side Effects:
518: * New elements are added to the parents list of cgn and the
519: * children list of cgn. the unmade field of pgn is updated
520: * to reflect the additional child.
521: *---------------------------------------------------------------------
522: */
523: static int
1.84 wiz 524: ParseLinkSrc(ClientData pgnp, ClientData cgnp)
1.1 cgd 525: {
1.105 christos 526: GNode *pgn = (GNode *)pgnp;
527: GNode *cgn = (GNode *)cgnp;
1.52 mycroft 528:
1.47 mycroft 529: if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts))
1.103 christos 530: pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts));
1.119 dsl 531: (void)Lst_AtEnd(pgn->children, cgn);
1.52 mycroft 532: if (specType == Not)
1.119 dsl 533: (void)Lst_AtEnd(cgn->parents, pgn);
1.52 mycroft 534: pgn->unmade += 1;
1.109 dsl 535: if (DEBUG(PARSE)) {
1.116 dsl 536: fprintf(debug_file, "# ParseLinkSrc: added child %s - %s\n", pgn->name, cgn->name);
1.109 dsl 537: Targ_PrintNode(pgn, 0);
538: Targ_PrintNode(cgn, 0);
539: }
1.1 cgd 540: return (0);
541: }
542:
543: /*-
544: *---------------------------------------------------------------------
545: * ParseDoOp --
546: * Apply the parsed operator to the given target node. Used in a
547: * Lst_ForEach call by ParseDoDependency once all targets have
548: * been found and their operator parsed. If the previous and new
549: * operators are incompatible, a major error is taken.
550: *
1.84 wiz 551: * Input:
552: * gnp The node to which the operator is to be applied
553: * opp The operator to apply
554: *
1.1 cgd 555: * Results:
556: * Always 0
557: *
558: * Side Effects:
559: * The type field of the node is altered to reflect any new bits in
560: * the op.
561: *---------------------------------------------------------------------
562: */
563: static int
1.84 wiz 564: ParseDoOp(ClientData gnp, ClientData opp)
1.1 cgd 565: {
1.105 christos 566: GNode *gn = (GNode *)gnp;
567: int op = *(int *)opp;
1.1 cgd 568: /*
569: * If the dependency mask of the operator and the node don't match and
570: * the node has actually had an operator applied to it before, and
1.27 christos 571: * the operator actually has some dependency information in it, complain.
1.1 cgd 572: */
573: if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) &&
574: !OP_NOP(gn->type) && !OP_NOP(op))
575: {
1.97 christos 576: Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name);
1.1 cgd 577: return (1);
578: }
579:
580: if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) {
581: /*
582: * If the node was the object of a :: operator, we need to create a
583: * new instance of it for the children and commands on this dependency
584: * line. The new instance is placed on the 'cohorts' list of the
585: * initial one (note the initial one is not on its own cohorts list)
586: * and the new instance is linked to all parents of the initial
587: * instance.
588: */
1.84 wiz 589: GNode *cohort;
1.27 christos 590:
1.33 mycroft 591: /*
1.46 mycroft 592: * Propagate copied bits to the initial node. They'll be propagated
593: * back to the rest of the cohorts later.
1.33 mycroft 594: */
1.46 mycroft 595: gn->type |= op & ~OP_OPMASK;
1.33 mycroft 596:
1.120 dsl 597: cohort = Targ_FindNode(gn->name, TARG_NOHASH);
1.1 cgd 598: /*
599: * Make the cohort invisible as well to avoid duplicating it into
600: * other variables. True, parents of this target won't tend to do
601: * anything with their local variables, but better safe than
1.46 mycroft 602: * sorry. (I think this is pointless now, since the relevant list
603: * traversals will no longer see this node anyway. -mycroft)
1.1 cgd 604: */
1.46 mycroft 605: cohort->type = op | OP_INVISIBLE;
1.119 dsl 606: (void)Lst_AtEnd(gn->cohorts, cohort);
1.83 pk 607: cohort->centurion = gn;
608: gn->unmade_cohorts += 1;
1.120 dsl 609: snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d",
610: gn->unmade_cohorts);
1.46 mycroft 611: } else {
1.1 cgd 612: /*
1.46 mycroft 613: * We don't want to nuke any previous flags (whatever they were) so we
614: * just OR the new operator into the old
1.1 cgd 615: */
1.46 mycroft 616: gn->type |= op;
1.1 cgd 617: }
1.33 mycroft 618:
1.1 cgd 619: return (0);
620: }
621:
1.27 christos 622: /*-
1.18 christos 623: *---------------------------------------------------------------------
1.1 cgd 624: * ParseDoSrc --
625: * Given the name of a source, figure out if it is an attribute
626: * and apply it to the targets if it is. Else decide if there is
627: * some attribute which should be applied *to* the source because
628: * of some special target and apply it if so. Otherwise, make the
629: * source be a child of the targets in the list 'targets'
630: *
1.84 wiz 631: * Input:
632: * tOp operator (if any) from special targets
633: * src name of the source to handle
634: *
1.1 cgd 635: * Results:
636: * None
637: *
638: * Side Effects:
639: * Operator bits may be added to the list of targets or to the source.
640: * The targets may have a new source added to their lists of children.
641: *---------------------------------------------------------------------
642: */
643: static void
1.120 dsl 644: ParseDoSrc(int tOp, const char *src)
1.1 cgd 645: {
1.18 christos 646: GNode *gn = NULL;
1.120 dsl 647: static int wait_number = 0;
648: char wait_src[16];
1.1 cgd 649:
1.40 christos 650: if (*src == '.' && isupper ((unsigned char)src[1])) {
1.1 cgd 651: int keywd = ParseFindKeyword(src);
652: if (keywd != -1) {
1.18 christos 653: int op = parseKeywords[keywd].op;
654: if (op != 0) {
1.119 dsl 655: Lst_ForEach(targets, ParseDoOp, &op);
1.18 christos 656: return;
657: }
658: if (parseKeywords[keywd].spec == Wait) {
1.120 dsl 659: /*
660: * We add a .WAIT node in the dependency list.
661: * After any dynamic dependencies (and filename globbing)
662: * have happened, it is given a dependency on the each
663: * previous child back to and previous .WAIT node.
664: * The next child won't be scheduled until the .WAIT node
665: * is built.
666: * We give each .WAIT node a unique name (mainly for diag).
667: */
668: snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number);
669: gn = Targ_FindNode(wait_src, TARG_NOHASH);
670: gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN;
671: Lst_ForEach(targets, ParseLinkSrc, gn);
1.18 christos 672: return;
673: }
1.1 cgd 674: }
675: }
1.18 christos 676:
677: switch (specType) {
678: case Main:
1.1 cgd 679: /*
680: * If we have noted the existence of a .MAIN, it means we need
681: * to add the sources of said target to the list of things
682: * to create. The string 'src' is likely to be free, so we
683: * must make a new copy of it. Note that this will only be
684: * invoked if the user didn't specify a target on the command
685: * line. This is to allow #ifmake's to succeed, or something...
686: */
1.147 joerg 687: (void)Lst_AtEnd(create, bmake_strdup(src));
1.1 cgd 688: /*
1.118 dsl 689: * Add the name to the .TARGETS variable as well, so the user can
1.1 cgd 690: * employ that, if desired.
691: */
692: Var_Append(".TARGETS", src, VAR_GLOBAL);
1.18 christos 693: return;
694:
695: case Order:
1.1 cgd 696: /*
697: * Create proper predecessor/successor links between the previous
698: * source and the current one.
699: */
700: gn = Targ_FindNode(src, TARG_CREATE);
701: if (predecessor != NILGNODE) {
1.120 dsl 702: (void)Lst_AtEnd(predecessor->order_succ, gn);
703: (void)Lst_AtEnd(gn->order_pred, predecessor);
1.109 dsl 704: if (DEBUG(PARSE)) {
1.116 dsl 705: fprintf(debug_file, "# ParseDoSrc: added Order dependency %s - %s\n",
1.109 dsl 706: predecessor->name, gn->name);
707: Targ_PrintNode(predecessor, 0);
708: Targ_PrintNode(gn, 0);
709: }
1.1 cgd 710: }
711: /*
712: * The current source now becomes the predecessor for the next one.
713: */
714: predecessor = gn;
1.18 christos 715: break;
716:
717: default:
1.1 cgd 718: /*
719: * If the source is not an attribute, we need to find/create
720: * a node for it. After that we can apply any operator to it
721: * from a special target or link it to its parents, as
722: * appropriate.
723: *
724: * In the case of a source that was the object of a :: operator,
725: * the attribute is applied to all of its instances (as kept in
726: * the 'cohorts' list of the node) or all the cohorts are linked
727: * to all the targets.
728: */
1.118 dsl 729:
730: /* Find/create the 'src' node and attach to all targets */
1.97 christos 731: gn = Targ_FindNode(src, TARG_CREATE);
1.1 cgd 732: if (tOp) {
733: gn->type |= tOp;
734: } else {
1.119 dsl 735: Lst_ForEach(targets, ParseLinkSrc, gn);
1.1 cgd 736: }
1.18 christos 737: break;
738: }
1.1 cgd 739: }
740:
741: /*-
742: *-----------------------------------------------------------------------
743: * ParseFindMain --
744: * Find a real target in the list and set it to be the main one.
745: * Called by ParseDoDependency when a main target hasn't been found
746: * yet.
747: *
1.84 wiz 748: * Input:
749: * gnp Node to examine
750: *
1.1 cgd 751: * Results:
752: * 0 if main not found yet, 1 if it is.
753: *
754: * Side Effects:
755: * mainNode is changed and Targ_SetMain is called.
756: *
757: *-----------------------------------------------------------------------
758: */
759: static int
1.84 wiz 760: ParseFindMain(ClientData gnp, ClientData dummy)
1.1 cgd 761: {
1.105 christos 762: GNode *gn = (GNode *)gnp;
1.30 christos 763: if ((gn->type & OP_NOTARGET) == 0) {
1.1 cgd 764: mainNode = gn;
765: Targ_SetMain(gn);
1.9 jtc 766: return (dummy ? 1 : 1);
1.1 cgd 767: } else {
1.9 jtc 768: return (dummy ? 0 : 0);
1.1 cgd 769: }
770: }
771:
772: /*-
773: *-----------------------------------------------------------------------
774: * ParseAddDir --
775: * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going
776: *
777: * Results:
778: * === 0
779: *
780: * Side Effects:
781: * See Dir_AddDir.
782: *
783: *-----------------------------------------------------------------------
784: */
785: static int
1.84 wiz 786: ParseAddDir(ClientData path, ClientData name)
1.1 cgd 787: {
1.105 christos 788: (void)Dir_AddDir((Lst) path, (char *)name);
1.1 cgd 789: return(0);
790: }
791:
792: /*-
793: *-----------------------------------------------------------------------
794: * ParseClearPath --
795: * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going
796: *
797: * Results:
798: * === 0
799: *
800: * Side Effects:
801: * See Dir_ClearPath
802: *
803: *-----------------------------------------------------------------------
804: */
805: static int
1.84 wiz 806: ParseClearPath(ClientData path, ClientData dummy)
1.1 cgd 807: {
1.9 jtc 808: Dir_ClearPath((Lst) path);
809: return(dummy ? 0 : 0);
1.1 cgd 810: }
811:
812: /*-
813: *---------------------------------------------------------------------
814: * ParseDoDependency --
815: * Parse the dependency line in line.
816: *
1.84 wiz 817: * Input:
818: * line the line to parse
819: *
1.1 cgd 820: * Results:
821: * None
822: *
823: * Side Effects:
824: * The nodes of the sources are linked as children to the nodes of the
825: * targets. Some nodes may be created.
826: *
827: * We parse a dependency line by first extracting words from the line and
828: * finding nodes in the list of all targets with that name. This is done
829: * until a character is encountered which is an operator character. Currently
830: * these are only ! and :. At this point the operator is parsed and the
831: * pointer into the line advanced until the first source is encountered.
832: * The parsed operator is applied to each node in the 'targets' list,
833: * which is where the nodes found for the targets are kept, by means of
834: * the ParseDoOp function.
835: * The sources are read in much the same way as the targets were except
836: * that now they are expanded using the wildcarding scheme of the C-Shell
837: * and all instances of the resulting words in the list of all targets
838: * are found. Each of the resulting nodes is then linked to each of the
839: * targets as one of its children.
840: * Certain targets are handled specially. These are the ones detailed
841: * by the specType variable.
842: * The storing of transformation rules is also taken care of here.
843: * A target is recognized as a transformation rule by calling
844: * Suff_IsTransform. If it is a transformation rule, its node is gotten
845: * from the suffix module via Suff_AddTransform rather than the standard
846: * Targ_FindNode in the target module.
847: *---------------------------------------------------------------------
848: */
849: static void
1.84 wiz 850: ParseDoDependency(char *line)
1.1 cgd 851: {
1.9 jtc 852: char *cp; /* our current position */
1.98 christos 853: GNode *gn = NULL; /* a general purpose temporary node */
1.9 jtc 854: int op; /* the operator on the line */
1.1 cgd 855: char savec; /* a place to save a character */
856: Lst paths; /* List of search paths to alter when parsing
857: * a list of .PATH targets */
858: int tOp; /* operator from special target */
1.18 christos 859: Lst sources; /* list of archive source names after
860: * expansion */
1.1 cgd 861: Lst curTargs; /* list of target names to be found and added
862: * to the targets list */
1.77 christos 863: char *lstart = line;
1.1 cgd 864:
1.120 dsl 865: if (DEBUG(PARSE))
866: fprintf(debug_file, "ParseDoDependency(%s)\n", line);
1.1 cgd 867: tOp = 0;
868:
869: specType = Not;
870: paths = (Lst)NULL;
871:
872: curTargs = Lst_Init(FALSE);
1.27 christos 873:
1.1 cgd 874: do {
1.121 dsl 875: for (cp = line; *cp && (ParseIsEscaped(lstart, cp) ||
876: !(isspace((unsigned char)*cp) ||
877: *cp == '!' || *cp == ':' || *cp == LPAREN));
878: cp++) {
1.1 cgd 879: if (*cp == '$') {
880: /*
881: * Must be a dynamic source (would have been expanded
882: * otherwise), so call the Var module to parse the puppy
883: * so we can safely advance beyond it...There should be
884: * no errors in this, as they would have been discovered
885: * in the initial Var_Subst and we wouldn't be here.
886: */
1.145 christos 887: int length;
1.114 christos 888: void *freeIt;
1.145 christos 889: char *result;
1.1 cgd 890:
1.145 christos 891: result = Var_Parse(cp, VAR_CMD, TRUE, &length, &freeIt);
1.114 christos 892: if (freeIt)
893: free(freeIt);
1.1 cgd 894: cp += length-1;
895: }
896: }
1.121 dsl 897:
1.77 christos 898: if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) {
1.1 cgd 899: /*
900: * Archives must be handled specially to make sure the OP_ARCHV
901: * flag is set in their 'type' field, for one thing, and because
902: * things like "archive(file1.o file2.o file3.o)" are permissible.
903: * Arch_ParseArchive will set 'line' to be the first non-blank
904: * after the archive-spec. It creates/finds nodes for the members
905: * and places them on the given list, returning SUCCESS if all
906: * went well and FAILURE if there was an error in the
907: * specification. On error, line should remain untouched.
908: */
1.97 christos 909: if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) {
910: Parse_Error(PARSE_FATAL,
1.1 cgd 911: "Error in archive specification: \"%s\"", line);
1.112 christos 912: goto out;
1.1 cgd 913: } else {
914: continue;
915: }
916: }
917: savec = *cp;
1.27 christos 918:
1.1 cgd 919: if (!*cp) {
920: /*
921: * Ending a dependency line without an operator is a Bozo
1.65 sommerfe 922: * no-no. As a heuristic, this is also often triggered by
923: * undetected conflicts from cvs/rcs merges.
1.1 cgd 924: */
1.65 sommerfe 925: if ((strncmp(line, "<<<<<<", 6) == 0) ||
926: (strncmp(line, "======", 6) == 0) ||
927: (strncmp(line, ">>>>>>", 6) == 0))
1.97 christos 928: Parse_Error(PARSE_FATAL,
1.67 sommerfe 929: "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts");
1.65 sommerfe 930: else
1.97 christos 931: Parse_Error(PARSE_FATAL, "Need an operator");
1.112 christos 932: goto out;
1.1 cgd 933: }
934: *cp = '\0';
1.118 dsl 935:
1.1 cgd 936: /*
937: * Have a word in line. See if it's a special target and set
938: * specType to match it.
939: */
1.40 christos 940: if (*line == '.' && isupper ((unsigned char)line[1])) {
1.1 cgd 941: /*
942: * See if the target is a special target that must have it
1.27 christos 943: * or its sources handled specially.
1.1 cgd 944: */
945: int keywd = ParseFindKeyword(line);
946: if (keywd != -1) {
1.5 cgd 947: if (specType == ExPath && parseKeywords[keywd].spec != ExPath) {
1.1 cgd 948: Parse_Error(PARSE_FATAL, "Mismatched special targets");
1.112 christos 949: goto out;
1.1 cgd 950: }
1.27 christos 951:
1.1 cgd 952: specType = parseKeywords[keywd].spec;
953: tOp = parseKeywords[keywd].op;
954:
955: /*
956: * Certain special targets have special semantics:
957: * .PATH Have to set the dirSearchPath
958: * variable too
959: * .MAIN Its sources are only used if
960: * nothing has been specified to
961: * create.
962: * .DEFAULT Need to create a node to hang
963: * commands on, but we don't want
964: * it in the graph, nor do we want
965: * it to be the Main Target, so we
966: * create it, set OP_NOTMAIN and
967: * add it to the list, setting
968: * DEFAULT to the new node for
969: * later use. We claim the node is
970: * A transformation rule to make
971: * life easier later, when we'll
972: * use Make_HandleUse to actually
973: * apply the .DEFAULT commands.
1.22 christos 974: * .PHONY The list of targets
1.32 gwr 975: * .NOPATH Don't search for file in the path
1.1 cgd 976: * .BEGIN
977: * .END
978: * .INTERRUPT Are not to be considered the
979: * main target.
980: * .NOTPARALLEL Make only one target at a time.
981: * .SINGLESHELL Create a shell for each command.
982: * .ORDER Must set initial predecessor to NIL
983: */
984: switch (specType) {
1.5 cgd 985: case ExPath:
1.1 cgd 986: if (paths == NULL) {
987: paths = Lst_Init(FALSE);
988: }
1.119 dsl 989: (void)Lst_AtEnd(paths, dirSearchPath);
1.1 cgd 990: break;
991: case Main:
992: if (!Lst_IsEmpty(create)) {
993: specType = Not;
994: }
995: break;
996: case Begin:
997: case End:
998: case Interrupt:
999: gn = Targ_FindNode(line, TARG_CREATE);
1.99 christos 1000: gn->type |= OP_NOTMAIN|OP_SPECIAL;
1.119 dsl 1001: (void)Lst_AtEnd(targets, gn);
1.1 cgd 1002: break;
1003: case Default:
1004: gn = Targ_NewGN(".DEFAULT");
1005: gn->type |= (OP_NOTMAIN|OP_TRANSFORM);
1.119 dsl 1006: (void)Lst_AtEnd(targets, gn);
1.1 cgd 1007: DEFAULT = gn;
1008: break;
1009: case NotParallel:
1.113 dsl 1010: maxJobs = 1;
1.1 cgd 1011: break;
1012: case SingleShell:
1.54 sommerfe 1013: compatMake = TRUE;
1.1 cgd 1014: break;
1015: case Order:
1016: predecessor = NILGNODE;
1017: break;
1.5 cgd 1018: default:
1019: break;
1.1 cgd 1020: }
1.103 christos 1021: } else if (strncmp(line, ".PATH", 5) == 0) {
1.1 cgd 1022: /*
1023: * .PATH<suffix> has to be handled specially.
1024: * Call on the suffix module to give us a path to
1025: * modify.
1026: */
1027: Lst path;
1.27 christos 1028:
1.5 cgd 1029: specType = ExPath;
1.97 christos 1030: path = Suff_GetPath(&line[5]);
1.1 cgd 1031: if (path == NILLST) {
1.97 christos 1032: Parse_Error(PARSE_FATAL,
1.1 cgd 1033: "Suffix '%s' not defined (yet)",
1034: &line[5]);
1.112 christos 1035: goto out;
1.1 cgd 1036: } else {
1037: if (paths == (Lst)NULL) {
1038: paths = Lst_Init(FALSE);
1039: }
1.119 dsl 1040: (void)Lst_AtEnd(paths, path);
1.1 cgd 1041: }
1042: }
1043: }
1.27 christos 1044:
1.1 cgd 1045: /*
1046: * Have word in line. Get or create its node and stick it at
1.27 christos 1047: * the end of the targets list
1.1 cgd 1048: */
1049: if ((specType == Not) && (*line != '\0')) {
1050: if (Dir_HasWildcards(line)) {
1051: /*
1052: * Targets are to be sought only in the current directory,
1053: * so create an empty path for the thing. Note we need to
1054: * use Dir_Destroy in the destruction of the path as the
1055: * Dir module could have added a directory to the path...
1056: */
1057: Lst emptyPath = Lst_Init(FALSE);
1.27 christos 1058:
1.1 cgd 1059: Dir_Expand(line, emptyPath, curTargs);
1.27 christos 1060:
1.1 cgd 1061: Lst_Destroy(emptyPath, Dir_Destroy);
1062: } else {
1063: /*
1064: * No wildcards, but we want to avoid code duplication,
1065: * so create a list with the word on it.
1066: */
1.119 dsl 1067: (void)Lst_AtEnd(curTargs, line);
1.1 cgd 1068: }
1.27 christos 1069:
1.1 cgd 1070: while(!Lst_IsEmpty(curTargs)) {
1071: char *targName = (char *)Lst_DeQueue(curTargs);
1.27 christos 1072:
1.1 cgd 1073: if (!Suff_IsTransform (targName)) {
1.97 christos 1074: gn = Targ_FindNode(targName, TARG_CREATE);
1.1 cgd 1075: } else {
1.97 christos 1076: gn = Suff_AddTransform(targName);
1.1 cgd 1077: }
1.27 christos 1078:
1.119 dsl 1079: (void)Lst_AtEnd(targets, gn);
1.1 cgd 1080: }
1.5 cgd 1081: } else if (specType == ExPath && *line != '.' && *line != '\0') {
1.1 cgd 1082: Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line);
1083: }
1.27 christos 1084:
1.1 cgd 1085: *cp = savec;
1086: /*
1087: * If it is a special type and not .PATH, it's the only target we
1088: * allow on this line...
1089: */
1.5 cgd 1090: if (specType != Not && specType != ExPath) {
1.115 christos 1091: Boolean warning = FALSE;
1.27 christos 1092:
1.77 christos 1093: while (*cp && (ParseIsEscaped(lstart, cp) ||
1094: ((*cp != '!') && (*cp != ':')))) {
1095: if (ParseIsEscaped(lstart, cp) ||
1096: (*cp != ' ' && *cp != '\t')) {
1.115 christos 1097: warning = TRUE;
1.1 cgd 1098: }
1099: cp++;
1100: }
1.115 christos 1101: if (warning) {
1.1 cgd 1102: Parse_Error(PARSE_WARNING, "Extra target ignored");
1103: }
1104: } else {
1.40 christos 1105: while (*cp && isspace ((unsigned char)*cp)) {
1.1 cgd 1106: cp++;
1107: }
1108: }
1109: line = cp;
1.77 christos 1110: } while (*line && (ParseIsEscaped(lstart, line) ||
1111: ((*line != '!') && (*line != ':'))));
1.1 cgd 1112:
1113: /*
1114: * Don't need the list of target names anymore...
1115: */
1116: Lst_Destroy(curTargs, NOFREE);
1.112 christos 1117: curTargs = NULL;
1.1 cgd 1118:
1119: if (!Lst_IsEmpty(targets)) {
1120: switch(specType) {
1121: default:
1122: Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored");
1123: break;
1124: case Default:
1125: case Begin:
1126: case End:
1127: case Interrupt:
1128: /*
1129: * These four create nodes on which to hang commands, so
1130: * targets shouldn't be empty...
1131: */
1132: case Not:
1133: /*
1134: * Nothing special here -- targets can be empty if it wants.
1135: */
1136: break;
1137: }
1138: }
1139:
1140: /*
1141: * Have now parsed all the target names. Must parse the operator next. The
1142: * result is left in op .
1143: */
1144: if (*cp == '!') {
1145: op = OP_FORCE;
1146: } else if (*cp == ':') {
1147: if (cp[1] == ':') {
1148: op = OP_DOUBLEDEP;
1149: cp++;
1150: } else {
1151: op = OP_DEPENDS;
1152: }
1153: } else {
1.97 christos 1154: Parse_Error(PARSE_FATAL, "Missing dependency operator");
1.112 christos 1155: goto out;
1.1 cgd 1156: }
1157:
1158: cp++; /* Advance beyond operator */
1159:
1.119 dsl 1160: Lst_ForEach(targets, ParseDoOp, &op);
1.1 cgd 1161:
1162: /*
1.27 christos 1163: * Get to the first source
1.1 cgd 1164: */
1.40 christos 1165: while (*cp && isspace ((unsigned char)*cp)) {
1.1 cgd 1166: cp++;
1167: }
1168: line = cp;
1169:
1170: /*
1171: * Several special targets take different actions if present with no
1172: * sources:
1173: * a .SUFFIXES line with no sources clears out all old suffixes
1174: * a .PRECIOUS line makes all targets precious
1175: * a .IGNORE line ignores errors for all targets
1176: * a .SILENT line creates silence when making all targets
1177: * a .PATH removes all directories from the search path(s).
1178: */
1179: if (!*line) {
1180: switch (specType) {
1181: case Suffixes:
1.97 christos 1182: Suff_ClearSuffixes();
1.1 cgd 1183: break;
1184: case Precious:
1185: allPrecious = TRUE;
1186: break;
1187: case Ignore:
1188: ignoreErrors = TRUE;
1189: break;
1190: case Silent:
1191: beSilent = TRUE;
1192: break;
1.5 cgd 1193: case ExPath:
1.119 dsl 1194: Lst_ForEach(paths, ParseClearPath, NULL);
1.85 sjg 1195: Dir_SetPATH();
1.1 cgd 1196: break;
1.48 sjg 1197: #ifdef POSIX
1198: case Posix:
1.70 sjg 1199: Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0);
1.48 sjg 1200: break;
1201: #endif
1.5 cgd 1202: default:
1203: break;
1.1 cgd 1204: }
1205: } else if (specType == MFlags) {
1206: /*
1207: * Call on functions in main.c to deal with these arguments and
1208: * set the initial character to a null-character so the loop to
1209: * get sources won't get anything
1210: */
1.97 christos 1211: Main_ParseArgLine(line);
1.1 cgd 1212: *line = '\0';
1.5 cgd 1213: } else if (specType == ExShell) {
1.97 christos 1214: if (Job_ParseShell(line) != SUCCESS) {
1215: Parse_Error(PARSE_FATAL, "improper shell specification");
1.112 christos 1216: goto out;
1.1 cgd 1217: }
1218: *line = '\0';
1219: } else if ((specType == NotParallel) || (specType == SingleShell)) {
1220: *line = '\0';
1221: }
1.27 christos 1222:
1.1 cgd 1223: /*
1.27 christos 1224: * NOW GO FOR THE SOURCES
1.1 cgd 1225: */
1.5 cgd 1226: if ((specType == Suffixes) || (specType == ExPath) ||
1.1 cgd 1227: (specType == Includes) || (specType == Libs) ||
1.75 tv 1228: (specType == Null) || (specType == ExObjdir))
1.1 cgd 1229: {
1230: while (*line) {
1231: /*
1232: * If the target was one that doesn't take files as its sources
1233: * but takes something like suffixes, we take each
1234: * space-separated word on the line as a something and deal
1235: * with it accordingly.
1236: *
1237: * If the target was .SUFFIXES, we take each source as a
1238: * suffix and add it to the list of suffixes maintained by the
1239: * Suff module.
1240: *
1241: * If the target was a .PATH, we add the source as a directory
1242: * to search on the search path.
1243: *
1244: * If it was .INCLUDES, the source is taken to be the suffix of
1245: * files which will be #included and whose search path should
1246: * be present in the .INCLUDES variable.
1247: *
1248: * If it was .LIBS, the source is taken to be the suffix of
1249: * files which are considered libraries and whose search path
1250: * should be present in the .LIBS variable.
1251: *
1252: * If it was .NULL, the source is the suffix to use when a file
1253: * has no valid suffix.
1.75 tv 1254: *
1255: * If it was .OBJDIR, the source is a new definition for .OBJDIR,
1256: * and will cause make to do a new chdir to that path.
1.1 cgd 1257: */
1.40 christos 1258: while (*cp && !isspace ((unsigned char)*cp)) {
1.1 cgd 1259: cp++;
1260: }
1261: savec = *cp;
1262: *cp = '\0';
1263: switch (specType) {
1264: case Suffixes:
1.97 christos 1265: Suff_AddSuffix(line, &mainNode);
1.1 cgd 1266: break;
1.5 cgd 1267: case ExPath:
1.119 dsl 1268: Lst_ForEach(paths, ParseAddDir, line);
1.1 cgd 1269: break;
1270: case Includes:
1.97 christos 1271: Suff_AddInclude(line);
1.1 cgd 1272: break;
1273: case Libs:
1.97 christos 1274: Suff_AddLib(line);
1.1 cgd 1275: break;
1276: case Null:
1.97 christos 1277: Suff_SetNull(line);
1.75 tv 1278: break;
1279: case ExObjdir:
1280: Main_SetObjdir(line);
1.1 cgd 1281: break;
1.5 cgd 1282: default:
1283: break;
1.1 cgd 1284: }
1285: *cp = savec;
1286: if (savec != '\0') {
1287: cp++;
1288: }
1.40 christos 1289: while (*cp && isspace ((unsigned char)*cp)) {
1.1 cgd 1290: cp++;
1291: }
1292: line = cp;
1293: }
1294: if (paths) {
1295: Lst_Destroy(paths, NOFREE);
1296: }
1.85 sjg 1297: if (specType == ExPath)
1298: Dir_SetPATH();
1.1 cgd 1299: } else {
1300: while (*line) {
1301: /*
1302: * The targets take real sources, so we must beware of archive
1303: * specifications (i.e. things with left parentheses in them)
1304: * and handle them accordingly.
1305: */
1.118 dsl 1306: for (; *cp && !isspace ((unsigned char)*cp); cp++) {
1.77 christos 1307: if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) {
1.1 cgd 1308: /*
1309: * Only stop for a left parenthesis if it isn't at the
1310: * start of a word (that'll be for variable changes
1311: * later) and isn't preceded by a dollar sign (a dynamic
1312: * source).
1313: */
1314: break;
1315: }
1316: }
1317:
1.77 christos 1318: if (*cp == LPAREN) {
1.97 christos 1319: sources = Lst_Init(FALSE);
1320: if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) {
1321: Parse_Error(PARSE_FATAL,
1.1 cgd 1322: "Error in source archive spec \"%s\"", line);
1.112 christos 1323: goto out;
1.1 cgd 1324: }
1325:
1326: while (!Lst_IsEmpty (sources)) {
1.103 christos 1327: gn = (GNode *)Lst_DeQueue(sources);
1.120 dsl 1328: ParseDoSrc(tOp, gn->name);
1.1 cgd 1329: }
1.97 christos 1330: Lst_Destroy(sources, NOFREE);
1.1 cgd 1331: cp = line;
1332: } else {
1333: if (*cp) {
1334: *cp = '\0';
1335: cp += 1;
1336: }
1337:
1.120 dsl 1338: ParseDoSrc(tOp, line);
1.1 cgd 1339: }
1.40 christos 1340: while (*cp && isspace ((unsigned char)*cp)) {
1.1 cgd 1341: cp++;
1342: }
1343: line = cp;
1344: }
1345: }
1.27 christos 1346:
1.1 cgd 1347: if (mainNode == NILGNODE) {
1348: /*
1349: * If we have yet to decide on a main target to make, in the
1350: * absence of any user input, we want the first target on
1351: * the first dependency line that is actually a real target
1352: * (i.e. isn't a .USE or .EXEC rule) to be made.
1353: */
1.119 dsl 1354: Lst_ForEach(targets, ParseFindMain, NULL);
1.1 cgd 1355: }
1356:
1.112 christos 1357: out:
1358: if (curTargs)
1359: Lst_Destroy(curTargs, NOFREE);
1.1 cgd 1360: }
1361:
1362: /*-
1363: *---------------------------------------------------------------------
1364: * Parse_IsVar --
1365: * Return TRUE if the passed line is a variable assignment. A variable
1366: * assignment consists of a single word followed by optional whitespace
1367: * followed by either a += or an = operator.
1368: * This function is used both by the Parse_File function and main when
1369: * parsing the command-line arguments.
1370: *
1.84 wiz 1371: * Input:
1372: * line the line to check
1373: *
1.1 cgd 1374: * Results:
1375: * TRUE if it is. FALSE if it ain't
1376: *
1377: * Side Effects:
1378: * none
1379: *---------------------------------------------------------------------
1380: */
1381: Boolean
1.84 wiz 1382: Parse_IsVar(char *line)
1.1 cgd 1383: {
1.84 wiz 1384: Boolean wasSpace = FALSE; /* set TRUE if found a space */
1385: Boolean haveName = FALSE; /* Set TRUE if have a variable name */
1.16 christos 1386: int level = 0;
1387: #define ISEQOPERATOR(c) \
1388: (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!'))
1.1 cgd 1389:
1390: /*
1391: * Skip to variable name
1392: */
1.27 christos 1393: for (;(*line == ' ') || (*line == '\t'); line++)
1.16 christos 1394: continue;
1.1 cgd 1395:
1.16 christos 1396: for (; *line != '=' || level != 0; line++)
1397: switch (*line) {
1398: case '\0':
1.1 cgd 1399: /*
1400: * end-of-line -- can't be a variable assignment.
1401: */
1.16 christos 1402: return FALSE;
1403:
1404: case ' ':
1405: case '\t':
1.1 cgd 1406: /*
1407: * there can be as much white space as desired so long as there is
1.27 christos 1408: * only one word before the operator
1.1 cgd 1409: */
1410: wasSpace = TRUE;
1.16 christos 1411: break;
1412:
1.77 christos 1413: case LPAREN:
1.16 christos 1414: case '{':
1415: level++;
1416: break;
1417:
1418: case '}':
1.77 christos 1419: case RPAREN:
1.16 christos 1420: level--;
1421: break;
1.27 christos 1422:
1.16 christos 1423: default:
1424: if (wasSpace && haveName) {
1425: if (ISEQOPERATOR(*line)) {
1426: /*
1.23 christos 1427: * We must have a finished word
1428: */
1429: if (level != 0)
1430: return FALSE;
1431:
1432: /*
1.16 christos 1433: * When an = operator [+?!:] is found, the next
1.23 christos 1434: * character must be an = or it ain't a valid
1.16 christos 1435: * assignment.
1436: */
1.23 christos 1437: if (line[1] == '=')
1.16 christos 1438: return haveName;
1.23 christos 1439: #ifdef SUNSHCMD
1.16 christos 1440: /*
1.23 christos 1441: * This is a shell command
1.16 christos 1442: */
1.23 christos 1443: if (strncmp(line, ":sh", 3) == 0)
1444: return haveName;
1445: #endif
1.16 christos 1446: }
1.23 christos 1447: /*
1448: * This is the start of another word, so not assignment.
1449: */
1450: return FALSE;
1.16 christos 1451: }
1452: else {
1.27 christos 1453: haveName = TRUE;
1.16 christos 1454: wasSpace = FALSE;
1.1 cgd 1455: }
1.16 christos 1456: break;
1.1 cgd 1457: }
1458:
1.16 christos 1459: return haveName;
1.1 cgd 1460: }
1461:
1462: /*-
1463: *---------------------------------------------------------------------
1464: * Parse_DoVar --
1465: * Take the variable assignment in the passed line and do it in the
1466: * global context.
1467: *
1468: * Note: There is a lexical ambiguity with assignment modifier characters
1469: * in variable names. This routine interprets the character before the =
1470: * as a modifier. Therefore, an assignment like
1471: * C++=/usr/bin/CC
1472: * is interpreted as "C+ +=" instead of "C++ =".
1473: *
1.84 wiz 1474: * Input:
1475: * line a line guaranteed to be a variable assignment.
1476: * This reduces error checks
1477: * ctxt Context in which to do the assignment
1478: *
1.1 cgd 1479: * Results:
1480: * none
1481: *
1482: * Side Effects:
1483: * the variable structure of the given variable name is altered in the
1484: * global context.
1485: *---------------------------------------------------------------------
1486: */
1487: void
1.84 wiz 1488: Parse_DoVar(char *line, GNode *ctxt)
1.1 cgd 1489: {
1.7 cgd 1490: char *cp; /* pointer into line */
1.1 cgd 1491: enum {
1492: VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL
1493: } type; /* Type of assignment */
1.27 christos 1494: char *opc; /* ptr to operator character to
1.1 cgd 1495: * null-terminate the variable name */
1.86 sjg 1496: Boolean freeCp = FALSE; /* TRUE if cp needs to be freed,
1497: * i.e. if any variable expansion was
1498: * performed */
1.1 cgd 1499:
1500: /*
1501: * Skip to variable name
1502: */
1503: while ((*line == ' ') || (*line == '\t')) {
1504: line++;
1505: }
1506:
1507: /*
1508: * Skip to operator character, nulling out whitespace as we go
1509: */
1510: for (cp = line + 1; *cp != '='; cp++) {
1.40 christos 1511: if (isspace ((unsigned char)*cp)) {
1.1 cgd 1512: *cp = '\0';
1513: }
1514: }
1515: opc = cp-1; /* operator is the previous character */
1516: *cp++ = '\0'; /* nuke the = */
1517:
1518: /*
1519: * Check operator type
1520: */
1521: switch (*opc) {
1522: case '+':
1523: type = VAR_APPEND;
1524: *opc = '\0';
1525: break;
1526:
1527: case '?':
1528: /*
1529: * If the variable already has a value, we don't do anything.
1530: */
1531: *opc = '\0';
1532: if (Var_Exists(line, ctxt)) {
1533: return;
1534: } else {
1535: type = VAR_NORMAL;
1536: }
1537: break;
1538:
1539: case ':':
1540: type = VAR_SUBST;
1541: *opc = '\0';
1542: break;
1543:
1544: case '!':
1545: type = VAR_SHELL;
1546: *opc = '\0';
1547: break;
1548:
1549: default:
1.23 christos 1550: #ifdef SUNSHCMD
1.39 christos 1551: while (opc > line && *opc != ':')
1552: opc--;
1.23 christos 1553:
1554: if (strncmp(opc, ":sh", 3) == 0) {
1555: type = VAR_SHELL;
1556: *opc = '\0';
1557: break;
1558: }
1559: #endif
1.1 cgd 1560: type = VAR_NORMAL;
1561: break;
1562: }
1563:
1.40 christos 1564: while (isspace ((unsigned char)*cp)) {
1.1 cgd 1565: cp++;
1566: }
1567:
1568: if (type == VAR_APPEND) {
1.97 christos 1569: Var_Append(line, cp, ctxt);
1.1 cgd 1570: } else if (type == VAR_SUBST) {
1571: /*
1572: * Allow variables in the old value to be undefined, but leave their
1573: * invocation alone -- this is done by forcing oldVars to be false.
1574: * XXX: This can cause recursive variables, but that's not hard to do,
1575: * and this allows someone to do something like
1576: *
1577: * CFLAGS = $(.INCLUDES)
1578: * CFLAGS := -I.. $(CFLAGS)
1579: *
1580: * And not get an error.
1581: */
1582: Boolean oldOldVars = oldVars;
1583:
1584: oldVars = FALSE;
1.42 christos 1585:
1586: /*
1587: * make sure that we set the variable the first time to nothing
1588: * so that it gets substituted!
1589: */
1590: if (!Var_Exists(line, ctxt))
1.70 sjg 1591: Var_Set(line, "", ctxt, 0);
1.42 christos 1592:
1.5 cgd 1593: cp = Var_Subst(NULL, cp, ctxt, FALSE);
1.1 cgd 1594: oldVars = oldOldVars;
1.86 sjg 1595: freeCp = TRUE;
1.1 cgd 1596:
1.70 sjg 1597: Var_Set(line, cp, ctxt, 0);
1.1 cgd 1598: } else if (type == VAR_SHELL) {
1.93 christos 1599: char *res;
1.115 christos 1600: const char *error;
1.5 cgd 1601:
1.23 christos 1602: if (strchr(cp, '$') != NULL) {
1.1 cgd 1603: /*
1604: * There's a dollar sign in the command, so perform variable
1605: * expansion on the whole thing. The resulting string will need
1606: * freeing when we're done, so set freeCmd to TRUE.
1607: */
1.23 christos 1608: cp = Var_Subst(NULL, cp, VAR_CMD, TRUE);
1.86 sjg 1609: freeCp = TRUE;
1.1 cgd 1610: }
1611:
1.115 christos 1612: res = Cmd_Exec(cp, &error);
1.70 sjg 1613: Var_Set(line, res, ctxt, 0);
1.23 christos 1614: free(res);
1.1 cgd 1615:
1.115 christos 1616: if (error)
1617: Parse_Error(PARSE_WARNING, error, cp);
1.1 cgd 1618: } else {
1619: /*
1620: * Normal assignment -- just do it.
1621: */
1.70 sjg 1622: Var_Set(line, cp, ctxt, 0);
1.1 cgd 1623: }
1.69 sjg 1624: if (strcmp(line, MAKEOVERRIDES) == 0)
1.74 tv 1625: Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */
1.85 sjg 1626: else if (strcmp(line, ".CURDIR") == 0) {
1627: /*
1628: * Somone is being (too?) clever...
1629: * Let's pretend they know what they are doing and
1630: * re-initialize the 'cur' Path.
1631: */
1632: Dir_InitCur(cp);
1633: Dir_SetPATH();
1.136 sjg 1634: } else if (strcmp(line, MAKE_JOB_PREFIX) == 0) {
1.135 sjg 1635: Job_SetPrefix();
1.136 sjg 1636: } else if (strcmp(line, MAKE_EXPORTED) == 0) {
1637: Var_Export(cp, 0);
1.85 sjg 1638: }
1.86 sjg 1639: if (freeCp)
1640: free(cp);
1.1 cgd 1641: }
1.23 christos 1642:
1.1 cgd 1643:
1644: /*-
1645: * ParseAddCmd --
1646: * Lst_ForEach function to add a command line to all targets
1647: *
1.84 wiz 1648: * Input:
1649: * gnp the node to which the command is to be added
1650: * cmd the command to add
1651: *
1.1 cgd 1652: * Results:
1653: * Always 0
1654: *
1655: * Side Effects:
1656: * A new element is added to the commands list of the node.
1657: */
1.5 cgd 1658: static int
1.84 wiz 1659: ParseAddCmd(ClientData gnp, ClientData cmd)
1.9 jtc 1660: {
1.105 christos 1661: GNode *gn = (GNode *)gnp;
1.120 dsl 1662:
1663: /* Add to last (ie current) cohort for :: targets */
1.47 mycroft 1664: if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts))
1.103 christos 1665: gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts));
1.120 dsl 1666:
1667: /* if target already supplied, ignore commands */
1.59 christos 1668: if (!(gn->type & OP_HAS_COMMANDS)) {
1669: (void)Lst_AtEnd(gn->commands, cmd);
1670: ParseMark(gn);
1671: } else {
1.60 christos 1672: #ifdef notyet
1673: /* XXX: We cannot do this until we fix the tree */
1.9 jtc 1674: (void)Lst_AtEnd(gn->commands, cmd);
1.97 christos 1675: Parse_Error(PARSE_WARNING,
1.61 christos 1676: "overriding commands for target \"%s\"; "
1677: "previous commands defined at %s: %d ignored",
1.59 christos 1678: gn->name, gn->fname, gn->lineno);
1.60 christos 1679: #else
1.97 christos 1680: Parse_Error(PARSE_WARNING,
1.62 mycroft 1681: "duplicate script for target \"%s\" ignored",
1682: gn->name);
1.97 christos 1683: ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING,
1.62 mycroft 1684: "using previous script for \"%s\" defined here",
1685: gn->name);
1.60 christos 1686: #endif
1.59 christos 1687: }
1.9 jtc 1688: return(0);
1.1 cgd 1689: }
1690:
1691: /*-
1692: *-----------------------------------------------------------------------
1693: * ParseHasCommands --
1694: * Callback procedure for Parse_File when destroying the list of
1695: * targets on the last dependency line. Marks a target as already
1696: * having commands if it does, to keep from having shell commands
1697: * on multiple dependency lines.
1698: *
1.84 wiz 1699: * Input:
1700: * gnp Node to examine
1701: *
1.1 cgd 1702: * Results:
1.9 jtc 1703: * None
1.1 cgd 1704: *
1705: * Side Effects:
1706: * OP_HAS_COMMANDS may be set for the target.
1707: *
1708: *-----------------------------------------------------------------------
1709: */
1.9 jtc 1710: static void
1.84 wiz 1711: ParseHasCommands(ClientData gnp)
1.1 cgd 1712: {
1.105 christos 1713: GNode *gn = (GNode *)gnp;
1.1 cgd 1714: if (!Lst_IsEmpty(gn->commands)) {
1715: gn->type |= OP_HAS_COMMANDS;
1716: }
1717: }
1718:
1719: /*-
1720: *-----------------------------------------------------------------------
1721: * Parse_AddIncludeDir --
1722: * Add a directory to the path searched for included makefiles
1723: * bracketed by double-quotes. Used by functions in main.c
1724: *
1.84 wiz 1725: * Input:
1726: * dir The name of the directory to add
1727: *
1.1 cgd 1728: * Results:
1729: * None.
1730: *
1731: * Side Effects:
1732: * The directory is appended to the list.
1733: *
1734: *-----------------------------------------------------------------------
1735: */
1736: void
1.84 wiz 1737: Parse_AddIncludeDir(char *dir)
1.1 cgd 1738: {
1.103 christos 1739: (void)Dir_AddDir(parseIncPath, dir);
1.1 cgd 1740: }
1741:
1742: /*-
1743: *---------------------------------------------------------------------
1744: * ParseDoInclude --
1745: * Push to another file.
1.27 christos 1746: *
1.38 christos 1747: * The input is the line minus the `.'. A file spec is a string
1.1 cgd 1748: * enclosed in <> or "". The former is looked for only in sysIncPath.
1749: * The latter in . and the directories specified by -I command line
1750: * options
1751: *
1752: * Results:
1753: * None
1754: *
1755: * Side Effects:
1756: * A structure is added to the includes Lst and readProc, lineno,
1757: * fname and curFILE are altered for the new file
1758: *---------------------------------------------------------------------
1759: */
1.123 dsl 1760:
1.1 cgd 1761: static void
1.123 dsl 1762: Parse_include_file(char *file, Boolean isSystem, int silent)
1.1 cgd 1763: {
1764: char *fullname; /* full pathname of file */
1.140 dsl 1765: char *newName;
1766: char *prefEnd, *incdir;
1.125 dsl 1767: int fd;
1.140 dsl 1768: int i;
1.1 cgd 1769:
1770: /*
1771: * Now we know the file's name and its search path, we attempt to
1772: * find the durn thing. A return of NULL indicates the file don't
1773: * exist.
1774: */
1.147 joerg 1775: fullname = file[0] == '/' ? bmake_strdup(file) : NULL;
1.76 reinoud 1776:
1.140 dsl 1777: if (fullname == NULL && !isSystem) {
1.1 cgd 1778: /*
1779: * Include files contained in double-quotes are first searched for
1780: * relative to the including file's location. We don't want to
1781: * cd there, of course, so we just tack on the old file's
1782: * leading path components and call Dir_FindFile to see if
1783: * we can locate the beast.
1784: */
1785:
1.147 joerg 1786: incdir = bmake_strdup(curFile->fname);
1.140 dsl 1787: prefEnd = strrchr(incdir, '/');
1.105 christos 1788: if (prefEnd != NULL) {
1.1 cgd 1789: *prefEnd = '\0';
1.140 dsl 1790: /* Now do lexical processing of leading "../" on the filename */
1791: for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) {
1792: prefEnd = strrchr(incdir + 1, '/');
1793: if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0)
1794: break;
1795: *prefEnd = '\0';
1796: }
1797: newName = str_concat(incdir, file + i, STR_ADDSLASH);
1.97 christos 1798: fullname = Dir_FindFile(newName, parseIncPath);
1.140 dsl 1799: if (fullname == NULL)
1.1 cgd 1800: fullname = Dir_FindFile(newName, dirSearchPath);
1.103 christos 1801: free(newName);
1.1 cgd 1802: }
1.140 dsl 1803: free(incdir);
1804:
1.142 sjg 1805: if (fullname == NULL) {
1.76 reinoud 1806: /*
1807: * Makefile wasn't found in same directory as included makefile.
1808: * Search for it first on the -I search path,
1809: * then on the .PATH search path, if not found in a -I directory.
1.142 sjg 1810: * If we have a suffix specific path we should use that.
1.76 reinoud 1811: */
1.142 sjg 1812: char *suff;
1813: Lst suffPath = NILLST;
1814:
1.145 christos 1815: if ((suff = strrchr(file, '.'))) {
1.142 sjg 1816: suffPath = Suff_GetPath(suff);
1817: if (suffPath != NILLST) {
1818: fullname = Dir_FindFile(file, suffPath);
1819: }
1820: }
1.105 christos 1821: if (fullname == NULL) {
1.142 sjg 1822: fullname = Dir_FindFile(file, parseIncPath);
1823: if (fullname == NULL) {
1824: fullname = Dir_FindFile(file, dirSearchPath);
1825: }
1.76 reinoud 1826: }
1.142 sjg 1827: }
1.1 cgd 1828: }
1829:
1.76 reinoud 1830: /* Looking for a system file or file still not found */
1.105 christos 1831: if (fullname == NULL) {
1.1 cgd 1832: /*
1.76 reinoud 1833: * Look for it on the system path
1.1 cgd 1834: */
1.123 dsl 1835: fullname = Dir_FindFile(file,
1836: Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath);
1.1 cgd 1837: }
1838:
1.105 christos 1839: if (fullname == NULL) {
1.38 christos 1840: if (!silent)
1.97 christos 1841: Parse_Error(PARSE_FATAL, "Could not find %s", file);
1.1 cgd 1842: return;
1843: }
1844:
1.125 dsl 1845: /* Actually open the file... */
1846: fd = open(fullname, O_RDONLY);
1847: if (fd == -1) {
1.38 christos 1848: if (!silent)
1.97 christos 1849: Parse_Error(PARSE_FATAL, "Cannot open %s", fullname);
1.140 dsl 1850: free(fullname);
1.125 dsl 1851: return;
1.123 dsl 1852: }
1.125 dsl 1853:
1854: /* Start reading from this file next */
1855: Parse_SetInput(fullname, 0, fd, NULL);
1.123 dsl 1856: }
1857:
1858: static void
1859: ParseDoInclude(char *line)
1860: {
1861: char endc; /* the character which ends the file spec */
1862: char *cp; /* current position in file spec */
1863: int silent = (*line != 'i') ? 1 : 0;
1864: char *file = &line[7 + silent];
1865:
1866: /* Skip to delimiter character so we know where to look */
1867: while (*file == ' ' || *file == '\t')
1868: file++;
1869:
1870: if (*file != '"' && *file != '<') {
1871: Parse_Error(PARSE_FATAL,
1872: ".include filename must be delimited by '\"' or '<'");
1873: return;
1874: }
1875:
1876: /*
1877: * Set the search path on which to find the include file based on the
1878: * characters which bracket its name. Angle-brackets imply it's
1879: * a system Makefile while double-quotes imply it's a user makefile
1880: */
1881: if (*file == '<') {
1882: endc = '>';
1883: } else {
1884: endc = '"';
1885: }
1886:
1887: /* Skip to matching delimiter */
1888: for (cp = ++file; *cp && *cp != endc; cp++)
1889: continue;
1890:
1891: if (*cp != endc) {
1892: Parse_Error(PARSE_FATAL,
1893: "Unclosed %cinclude filename. '%c' expected",
1894: '.', endc);
1895: return;
1.1 cgd 1896: }
1.123 dsl 1897: *cp = '\0';
1898:
1899: /*
1900: * Substitute for any variables in the file name before trying to
1901: * find the thing.
1902: */
1903: file = Var_Subst(NULL, file, VAR_CMD, FALSE);
1904:
1905: Parse_include_file(file, endc == '>', silent);
1906: free(file);
1.1 cgd 1907: }
1908:
1.5 cgd 1909:
1910: /*-
1911: *---------------------------------------------------------------------
1.44 aidan 1912: * ParseSetParseFile --
1913: * Set the .PARSEDIR and .PARSEFILE variables to the dirname and
1914: * basename of the given filename
1915: *
1916: * Results:
1917: * None
1918: *
1919: * Side Effects:
1920: * The .PARSEDIR and .PARSEFILE variables are overwritten by the
1921: * dirname and basename of the given filename.
1922: *---------------------------------------------------------------------
1923: */
1924: static void
1.122 dsl 1925: ParseSetParseFile(const char *filename)
1.44 aidan 1926: {
1927: char *slash;
1.122 dsl 1928: char *dirname;
1.145 christos 1929: int len;
1.44 aidan 1930:
1.78 reinoud 1931: slash = strrchr(filename, '/');
1.122 dsl 1932: if (slash == NULL) {
1.70 sjg 1933: Var_Set(".PARSEDIR", ".", VAR_GLOBAL, 0);
1.78 reinoud 1934: Var_Set(".PARSEFILE", filename, VAR_GLOBAL, 0);
1.44 aidan 1935: } else {
1.122 dsl 1936: len = slash - filename;
1.147 joerg 1937: dirname = bmake_malloc(len + 1);
1.145 christos 1938: memcpy(dirname, filename, len);
1.122 dsl 1939: dirname[len] = 0;
1940: Var_Set(".PARSEDIR", dirname, VAR_GLOBAL, 0);
1.70 sjg 1941: Var_Set(".PARSEFILE", slash+1, VAR_GLOBAL, 0);
1.122 dsl 1942: free(dirname);
1.44 aidan 1943: }
1944: }
1945:
1.137 sjg 1946: /*
1947: * Track the makefiles we read - so makefiles can
1948: * set dependencies on them.
1949: * Avoid adding anything more than once.
1950: */
1951:
1952: static void
1953: ParseTrackInput(const char *name)
1954: {
1955: char *old;
1956: char *fp = NULL;
1.141 christos 1957: size_t name_len = strlen(name);
1.137 sjg 1958:
1959: old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp);
1960: if (old) {
1.139 dsl 1961: /* does it contain name? */
1962: for (; old != NULL; old = strchr(old, ' ')) {
1963: if (*old == ' ')
1964: old++;
1965: if (memcmp(old, name, name_len) == 0
1966: && (old[name_len] == 0 || old[name_len] == ' '))
1967: goto cleanup;
1.137 sjg 1968: }
1969: }
1.139 dsl 1970: Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL);
1.137 sjg 1971: cleanup:
1972: if (fp) {
1973: free(fp);
1974: }
1975: }
1976:
1.44 aidan 1977:
1978: /*-
1979: *---------------------------------------------------------------------
1.125 dsl 1980: * Parse_setInput --
1981: * Start Parsing from the given source
1.27 christos 1982: *
1.5 cgd 1983: * Results:
1984: * None
1985: *
1986: * Side Effects:
1987: * A structure is added to the includes Lst and readProc, lineno,
1.125 dsl 1988: * fname and curFile are altered for the new file
1.5 cgd 1989: *---------------------------------------------------------------------
1990: */
1991: void
1.125 dsl 1992: Parse_SetInput(const char *name, int line, int fd, char *buf)
1.5 cgd 1993: {
1.127 dsl 1994: if (name == NULL)
1995: name = curFile->fname;
1.139 dsl 1996: else
1997: ParseTrackInput(name);
1.127 dsl 1998:
1999: if (DEBUG(PARSE))
2000: fprintf(debug_file, "Parse_SetInput: file %s, line %d, fd %d, buf %p\n",
2001: name, line, fd, buf);
2002:
1.125 dsl 2003: if (fd == -1 && buf == NULL)
2004: /* sanity */
2005: return;
2006:
1.132 dsl 2007: if (curFile != NULL)
2008: /* Save exiting file info */
2009: Lst_AtFront(includes, curFile);
1.5 cgd 2010:
1.125 dsl 2011: /* Allocate and fill in new structure */
1.147 joerg 2012: curFile = bmake_malloc(sizeof *curFile);
1.125 dsl 2013:
2014: /*
2015: * Once the previous state has been saved, we can get down to reading
2016: * the new file. We set up the name of the file to be the absolute
2017: * name of the include file so error messages refer to the right
2018: * place.
2019: */
2020: curFile->fname = name;
2021: curFile->lineno = line;
2022: curFile->fd = fd;
1.132 dsl 2023: curFile->cond_depth = Cond_save_depth();
1.27 christos 2024:
1.125 dsl 2025: ParseSetParseFile(name);
2026:
2027: if (buf == NULL) {
2028: /*
2029: * Allocate a 32k data buffer (as stdio seems to).
2030: * Set pointers so that first ParseReadc has to do a file read.
2031: */
1.147 joerg 2032: buf = bmake_malloc(IFILE_BUFLEN);
1.125 dsl 2033: buf[0] = 0;
2034: curFile->P_str = buf;
2035: curFile->P_ptr = buf;
2036: curFile->P_end = buf;
1.127 dsl 2037: curFile->P_buflen = IFILE_BUFLEN;
1.125 dsl 2038: } else {
2039: /* Start reading from the start of the buffer */
2040: curFile->P_str = buf;
2041: curFile->P_ptr = buf;
2042: curFile->P_end = NULL;
2043: }
1.5 cgd 2044:
2045: }
2046:
2047: #ifdef SYSVINCLUDE
2048: /*-
2049: *---------------------------------------------------------------------
2050: * ParseTraditionalInclude --
2051: * Push to another file.
1.27 christos 2052: *
1.38 christos 2053: * The input is the current line. The file name(s) are
2054: * following the "include".
1.5 cgd 2055: *
2056: * Results:
2057: * None
2058: *
2059: * Side Effects:
2060: * A structure is added to the includes Lst and readProc, lineno,
2061: * fname and curFILE are altered for the new file
2062: *---------------------------------------------------------------------
2063: */
2064: static void
1.84 wiz 2065: ParseTraditionalInclude(char *line)
1.5 cgd 2066: {
2067: char *cp; /* current position in file spec */
1.38 christos 2068: int done = 0;
2069: int silent = (line[0] != 'i') ? 1 : 0;
2070: char *file = &line[silent + 7];
1.123 dsl 2071: char *all_files;
1.5 cgd 2072:
1.111 ginsbach 2073: if (DEBUG(PARSE)) {
1.116 dsl 2074: fprintf(debug_file, "ParseTraditionalInclude: %s\n", file);
1.111 ginsbach 2075: }
2076:
1.5 cgd 2077: /*
2078: * Skip over whitespace
2079: */
1.38 christos 2080: while (isspace((unsigned char)*file))
1.5 cgd 2081: file++;
2082:
1.111 ginsbach 2083: /*
2084: * Substitute for any variables in the file name before trying to
2085: * find the thing.
2086: */
1.123 dsl 2087: all_files = Var_Subst(NULL, file, VAR_CMD, FALSE);
1.111 ginsbach 2088:
1.5 cgd 2089: if (*file == '\0') {
1.97 christos 2090: Parse_Error(PARSE_FATAL,
1.5 cgd 2091: "Filename missing from \"include\"");
2092: return;
2093: }
2094:
1.123 dsl 2095: for (file = all_files; !done; file = cp + 1) {
2096: /* Skip to end of line or next whitespace */
1.38 christos 2097: for (cp = file; *cp && !isspace((unsigned char) *cp); cp++)
2098: continue;
2099:
2100: if (*cp)
2101: *cp = '\0';
2102: else
2103: done = 1;
2104:
1.123 dsl 2105: Parse_include_file(file, FALSE, silent);
1.5 cgd 2106: }
1.123 dsl 2107: free(all_files);
1.5 cgd 2108: }
2109: #endif
2110:
1.1 cgd 2111: /*-
2112: *---------------------------------------------------------------------
2113: * ParseEOF --
2114: * Called when EOF is reached in the current file. If we were reading
2115: * an include file, the includes stack is popped and things set up
2116: * to go back to reading the previous file at the previous location.
2117: *
2118: * Results:
2119: * CONTINUE if there's more to do. DONE if not.
2120: *
2121: * Side Effects:
2122: * The old curFILE, is closed. The includes list is shortened.
2123: * lineno, curFILE, and fname are changed if CONTINUE is returned.
2124: *---------------------------------------------------------------------
2125: */
2126: static int
1.123 dsl 2127: ParseEOF(void)
1.1 cgd 2128: {
1.132 dsl 2129: /* Ensure the makefile (or loop) didn't have mismatched conditionals */
2130: Cond_restore_depth(curFile->cond_depth);
1.131 dsl 2131:
1.125 dsl 2132: /* Dispose of curFile info */
2133: /* Leak curFile->fname because all the gnodes have pointers to it */
2134: if (curFile->fd != -1)
2135: close(curFile->fd);
2136: free(curFile->P_str);
2137: free(curFile);
2138:
1.132 dsl 2139: curFile = Lst_DeQueue(includes);
1.1 cgd 2140:
1.132 dsl 2141: if (curFile == (IFile *)NIL) {
1.125 dsl 2142: /* We've run out of input */
1.44 aidan 2143: Var_Delete(".PARSEDIR", VAR_GLOBAL);
2144: Var_Delete(".PARSEFILE", VAR_GLOBAL);
1.125 dsl 2145: return DONE;
1.1 cgd 2146: }
2147:
1.127 dsl 2148: if (DEBUG(PARSE))
1.145 christos 2149: fprintf(debug_file, "ParseEOF: returning to file %s, line %d, fd %d\n",
1.127 dsl 2150: curFile->fname, curFile->lineno, curFile->fd);
2151:
1.125 dsl 2152: /* Restore the PARSEDIR/PARSEFILE variables */
2153: ParseSetParseFile(curFile->fname);
1.1 cgd 2154: return (CONTINUE);
2155: }
2156:
1.127 dsl 2157: #define PARSE_RAW 1
2158: #define PARSE_SKIP 2
2159:
2160: static char *
2161: ParseGetLine(int flags, int *length)
1.5 cgd 2162: {
1.125 dsl 2163: IFile *cf = curFile;
1.127 dsl 2164: char *ptr;
1.125 dsl 2165: char ch;
1.127 dsl 2166: char *line;
2167: char *line_end;
2168: char *escaped;
2169: char *comment;
2170: char *tp;
1.145 christos 2171: int len, dist;
1.125 dsl 2172:
1.127 dsl 2173: /* Loop through blank lines and comment lines */
1.125 dsl 2174: for (;;) {
1.127 dsl 2175: cf->lineno++;
2176: line = cf->P_ptr;
2177: ptr = line;
2178: line_end = line;
2179: escaped = NULL;
2180: comment = NULL;
2181: for (;;) {
2182: ch = *ptr;
2183: if (ch == 0 || (ch == '\\' && ptr[1] == 0)) {
2184: if (cf->P_end == NULL)
2185: /* End of string (aka for loop) data */
2186: break;
2187: /* End of data read from file, read more data */
2188: if (ptr != cf->P_end && (ch != '\\' || ptr + 1 != cf->P_end)) {
2189: Parse_Error(PARSE_FATAL, "Zero byte read from file");
2190: return NULL;
2191: }
2192: /* Move existing data to (near) start of file buffer */
2193: len = cf->P_end - cf->P_ptr;
2194: tp = cf->P_str + 32;
1.145 christos 2195: memmove(tp, cf->P_ptr, len);
1.127 dsl 2196: dist = cf->P_ptr - tp;
2197: /* Update all pointers to reflect moved data */
2198: ptr -= dist;
2199: line -= dist;
2200: line_end -= dist;
2201: if (escaped)
2202: escaped -= dist;
2203: if (comment)
2204: comment -= dist;
2205: cf->P_ptr = tp;
2206: tp += len;
2207: cf->P_end = tp;
2208: /* Try to read more data from file into buffer space */
2209: len = cf->P_str + cf->P_buflen - tp - 32;
2210: if (len <= 0) {
2211: /* We need a bigger buffer to hold this line */
1.147 joerg 2212: tp = bmake_realloc(cf->P_str, cf->P_buflen + IFILE_BUFLEN);
1.146 christos 2213: cf->P_ptr = cf->P_ptr - cf->P_str + tp;
1.127 dsl 2214: cf->P_end = cf->P_end - cf->P_str + tp;
2215: ptr = ptr - cf->P_str + tp;
2216: line = line - cf->P_str + tp;
2217: line_end = line_end - cf->P_str + tp;
2218: if (escaped)
2219: escaped = escaped - cf->P_str + tp;
2220: if (comment)
2221: comment = comment - cf->P_str + tp;
2222: cf->P_str = tp;
2223: tp = cf->P_end;
2224: len += IFILE_BUFLEN;
1.143 dsl 2225: cf->P_buflen += IFILE_BUFLEN;
1.127 dsl 2226: }
1.145 christos 2227: len = read(cf->fd, tp, len);
1.127 dsl 2228: if (len <= 0) {
2229: if (len < 0) {
2230: Parse_Error(PARSE_FATAL, "Makefile read error: %s",
2231: strerror(errno));
2232: return NULL;
2233: }
2234: /* End of file */
2235: break;
2236: }
2237: /* 0 terminate the data, and update end pointer */
2238: tp += len;
2239: cf->P_end = tp;
2240: *tp = 0;
2241: /* Process newly read characters */
2242: continue;
2243: }
2244:
2245: if (ch == '\\') {
2246: /* Don't treat next character as special, remember first one */
2247: if (escaped == NULL)
2248: escaped = ptr;
2249: if (ptr[1] == '\n')
2250: cf->lineno++;
2251: ptr += 2;
2252: line_end = ptr;
2253: continue;
2254: }
2255: if (ch == '#' && comment == NULL) {
2256: /* Remember first '#' for comment stripping */
2257: comment = line_end;
2258: }
2259: ptr++;
1.125 dsl 2260: if (ch == '\n')
1.127 dsl 2261: break;
2262: if (!isspace((unsigned char)ch))
2263: /* We are not interested in trailing whitespace */
2264: line_end = ptr;
2265: }
1.125 dsl 2266:
1.127 dsl 2267: /* Save next 'to be processed' location */
2268: cf->P_ptr = ptr;
2269:
2270: /* Check we have a non-comment, non-blank line */
2271: if (line_end == line || comment == line) {
2272: if (ch == 0)
2273: /* At end of file */
2274: return NULL;
2275: /* Parse another line */
1.125 dsl 2276: continue;
1.127 dsl 2277: }
1.125 dsl 2278:
1.127 dsl 2279: /* We now have a line of data */
2280: *line_end = 0;
1.27 christos 2281:
1.127 dsl 2282: if (flags & PARSE_RAW) {
2283: /* Leave '\' (etc) in line buffer (eg 'for' lines) */
2284: *length = line_end - line;
2285: return line;
2286: }
1.5 cgd 2287:
1.127 dsl 2288: if (flags & PARSE_SKIP) {
2289: /* Completely ignore non-directives */
2290: if (line[0] != '.')
2291: continue;
2292: /* We could do more of the .else/.elif/.endif checks here */
2293: }
2294: break;
2295: }
1.5 cgd 2296:
1.127 dsl 2297: /* Brutally ignore anything after a non-escaped '#' in non-commands */
2298: if (comment != NULL && line[0] != '\t') {
2299: line_end = comment;
2300: *line_end = 0;
2301: }
1.5 cgd 2302:
1.127 dsl 2303: /* If we didn't see a '\\' then the in-situ data is fine */
2304: if (escaped == NULL) {
2305: *length = line_end - line;
2306: return line;
2307: }
1.5 cgd 2308:
1.127 dsl 2309: /* Remove escapes from '\n' and '#' */
2310: tp = ptr = escaped;
2311: escaped = line;
2312: for (; ; *tp++ = ch) {
2313: ch = *ptr++;
2314: if (ch != '\\') {
2315: if (ch == 0)
2316: break;
2317: continue;
2318: }
1.5 cgd 2319:
1.127 dsl 2320: ch = *ptr++;
2321: if (ch == 0) {
2322: /* Delete '\\' at end of buffer */
2323: tp--;
2324: break;
2325: }
1.27 christos 2326:
1.130 dsl 2327: if (ch == '#' && line[0] != '\t')
2328: /* Delete '\\' from before '#' on non-command lines */
1.127 dsl 2329: continue;
1.27 christos 2330:
1.127 dsl 2331: if (ch != '\n') {
2332: /* Leave '\\' in buffer for later */
2333: *tp++ = '\\';
2334: /* Make sure we don't delete an escaped ' ' from the line end */
2335: escaped = tp + 1;
2336: continue;
2337: }
1.27 christos 2338:
1.128 dsl 2339: /* Escaped '\n' replace following whitespace with a single ' ' */
1.127 dsl 2340: while (ptr[0] == ' ' || ptr[0] == '\t')
2341: ptr++;
2342: ch = ' ';
2343: }
1.27 christos 2344:
1.127 dsl 2345: /* Delete any trailing spaces - eg from empty continuations */
2346: while (tp > escaped && isspace((unsigned char)tp[-1]))
2347: tp--;
1.27 christos 2348:
1.127 dsl 2349: *tp = 0;
2350: *length = tp - line;
1.5 cgd 2351: return line;
2352: }
1.1 cgd 2353:
2354: /*-
2355: *---------------------------------------------------------------------
2356: * ParseReadLine --
2357: * Read an entire line from the input file. Called only by Parse_File.
2358: *
2359: * Results:
2360: * A line w/o its newline
2361: *
2362: * Side Effects:
2363: * Only those associated with reading a character
2364: *---------------------------------------------------------------------
2365: */
2366: static char *
1.84 wiz 2367: ParseReadLine(void)
1.1 cgd 2368: {
1.9 jtc 2369: char *line; /* Result */
1.1 cgd 2370: int lineLength; /* Length of result */
1.95 enami 2371: int lineno; /* Saved line # */
1.1 cgd 2372:
1.5 cgd 2373: for (;;) {
1.127 dsl 2374: line = ParseGetLine(0, &lineLength);
2375: if (line == NULL)
2376: return NULL;
1.1 cgd 2377:
1.127 dsl 2378: if (line[0] != '.')
2379: return line;
1.121 dsl 2380:
2381: /*
1.127 dsl 2382: * The line might be a conditional. Ask the conditional module
2383: * about it and act accordingly
1.121 dsl 2384: */
1.127 dsl 2385: switch (Cond_Eval(line)) {
2386: case COND_SKIP:
2387: /* Skip to next conditional that evaluates to COND_PARSE. */
2388: do {
2389: line = ParseGetLine(PARSE_SKIP, &lineLength);
2390: } while (line && Cond_Eval(line) != COND_PARSE);
2391: if (line == NULL)
1.121 dsl 2392: break;
1.127 dsl 2393: continue;
2394: case COND_PARSE:
2395: continue;
2396: case COND_INVALID: /* Not a conditional line */
2397: if (!For_Eval(line))
1.1 cgd 2398: break;
1.127 dsl 2399: lineno = curFile->lineno;
2400: /* Skip after the matching end */
1.121 dsl 2401: do {
1.127 dsl 2402: line = ParseGetLine(PARSE_RAW, &lineLength);
1.121 dsl 2403: if (line == NULL) {
2404: Parse_Error(PARSE_FATAL,
2405: "Unexpected end of file in for loop.\n");
1.5 cgd 2406: break;
1.121 dsl 2407: }
1.127 dsl 2408: } while (For_Eval(line));
2409: /* Stash each iteration as a new 'input file' */
2410: For_Run(lineno);
2411: /* Read next line from for-loop buffer */
2412: continue;
1.1 cgd 2413: }
1.127 dsl 2414: return (line);
1.1 cgd 2415: }
2416: }
2417:
2418: /*-
2419: *-----------------------------------------------------------------------
2420: * ParseFinishLine --
2421: * Handle the end of a dependency group.
2422: *
2423: * Results:
2424: * Nothing.
2425: *
2426: * Side Effects:
2427: * inLine set FALSE. 'targets' list destroyed.
2428: *
2429: *-----------------------------------------------------------------------
2430: */
2431: static void
1.84 wiz 2432: ParseFinishLine(void)
1.1 cgd 2433: {
2434: if (inLine) {
1.119 dsl 2435: Lst_ForEach(targets, Suff_EndTransform, NULL);
1.97 christos 2436: Lst_Destroy(targets, ParseHasCommands);
1.9 jtc 2437: targets = NULL;
1.1 cgd 2438: inLine = FALSE;
2439: }
2440: }
1.27 christos 2441:
1.1 cgd 2442:
2443: /*-
2444: *---------------------------------------------------------------------
2445: * Parse_File --
2446: * Parse a file into its component parts, incorporating it into the
2447: * current dependency graph. This is the main function and controls
2448: * almost every other function in this module
2449: *
1.84 wiz 2450: * Input:
2451: * name the name of the file being read
1.125 dsl 2452: * fd Open file to makefile to parse
1.84 wiz 2453: *
1.1 cgd 2454: * Results:
2455: * None
2456: *
2457: * Side Effects:
1.125 dsl 2458: * closes fd.
1.1 cgd 2459: * Loads. Nodes are added to the list of all targets, nodes and links
2460: * are added to the dependency graph. etc. etc. etc.
2461: *---------------------------------------------------------------------
2462: */
2463: void
1.125 dsl 2464: Parse_File(const char *name, int fd)
1.1 cgd 2465: {
1.117 dsl 2466: char *cp; /* pointer into the line */
2467: char *line; /* the line we're working on */
1.1 cgd 2468:
2469: inLine = FALSE;
2470: fatals = 0;
1.44 aidan 2471:
1.125 dsl 2472: Parse_SetInput(name, 0, fd, NULL);
1.1 cgd 2473:
2474: do {
1.127 dsl 2475: for (; (line = ParseReadLine()) != NULL; ) {
1.120 dsl 2476: if (DEBUG(PARSE))
1.145 christos 2477: fprintf(debug_file, "ParseReadLine (%d): '%s'\n",
2478: curFile->lineno, line);
1.1 cgd 2479: if (*line == '.') {
2480: /*
2481: * Lines that begin with the special character are either
2482: * include or undef directives.
2483: */
1.127 dsl 2484: for (cp = line + 1; isspace((unsigned char)*cp); cp++) {
1.1 cgd 2485: continue;
2486: }
1.38 christos 2487: if (strncmp(cp, "include", 7) == 0 ||
1.127 dsl 2488: ((cp[0] == 's' || cp[0] == '-') &&
2489: strncmp(&cp[1], "include", 7) == 0)) {
1.97 christos 2490: ParseDoInclude(cp);
1.117 dsl 2491: continue;
2492: }
2493: if (strncmp(cp, "undef", 5) == 0) {
1.1 cgd 2494: char *cp2;
1.127 dsl 2495: for (cp += 5; isspace((unsigned char) *cp); cp++)
1.1 cgd 2496: continue;
1.9 jtc 2497: for (cp2 = cp; !isspace((unsigned char) *cp2) &&
1.127 dsl 2498: (*cp2 != '\0'); cp2++)
1.1 cgd 2499: continue;
2500: *cp2 = '\0';
2501: Var_Delete(cp, VAR_GLOBAL);
1.117 dsl 2502: continue;
1.136 sjg 2503: } else if (strncmp(cp, "export", 6) == 0) {
2504: for (cp += 6; isspace((unsigned char) *cp); cp++)
2505: continue;
2506: Var_Export(cp, 1);
2507: continue;
1.1 cgd 2508: }
2509: }
1.27 christos 2510:
1.6 jtc 2511: if (*line == '\t') {
1.1 cgd 2512: /*
1.6 jtc 2513: * If a line starts with a tab, it can only hope to be
2514: * a creation command.
1.1 cgd 2515: */
1.133 dsl 2516: cp = line + 1;
1.127 dsl 2517: shellCommand:
1.133 dsl 2518: for (; isspace ((unsigned char)*cp); cp++) {
1.1 cgd 2519: continue;
2520: }
2521: if (*cp) {
1.117 dsl 2522: if (!inLine)
1.97 christos 2523: Parse_Error(PARSE_FATAL,
1.25 christos 2524: "Unassociated shell command \"%s\"",
1.1 cgd 2525: cp);
1.117 dsl 2526: /*
2527: * So long as it's not a blank line and we're actually
2528: * in a dependency spec, add the command to the list of
2529: * commands of all targets in the dependency spec
2530: */
1.129 christos 2531: if (targets) {
1.147 joerg 2532: cp = bmake_strdup(cp);
1.129 christos 2533: Lst_ForEach(targets, ParseAddCmd, cp);
1.117 dsl 2534: #ifdef CLEANUP
1.129 christos 2535: Lst_AtEnd(targCmds, cp);
1.117 dsl 2536: #endif
1.129 christos 2537: }
1.1 cgd 2538: }
1.117 dsl 2539: continue;
2540: }
2541:
1.5 cgd 2542: #ifdef SYSVINCLUDE
1.117 dsl 2543: if (((strncmp(line, "include", 7) == 0 &&
2544: isspace((unsigned char) line[7])) ||
2545: ((line[0] == 's' || line[0] == '-') &&
2546: strncmp(&line[1], "include", 7) == 0 &&
2547: isspace((unsigned char) line[8]))) &&
2548: strchr(line, ':') == NULL) {
1.5 cgd 2549: /*
2550: * It's an S3/S5-style "include".
2551: */
1.97 christos 2552: ParseTraditionalInclude(line);
1.117 dsl 2553: continue;
2554: }
1.5 cgd 2555: #endif
1.117 dsl 2556: if (Parse_IsVar(line)) {
1.1 cgd 2557: ParseFinishLine();
1.97 christos 2558: Parse_DoVar(line, VAR_GLOBAL);
1.117 dsl 2559: continue;
2560: }
2561:
1.127 dsl 2562: #ifndef POSIX
1.117 dsl 2563: /*
2564: * To make life easier on novices, if the line is indented we
2565: * first make sure the line has a dependency operator in it.
2566: * If it doesn't have an operator and we're in a dependency
2567: * line's script, we assume it's actually a shell command
2568: * and add it to the current list of targets.
2569: */
2570: cp = line;
2571: if (isspace((unsigned char) line[0])) {
1.127 dsl 2572: while ((*cp != '\0') && isspace((unsigned char) *cp))
1.117 dsl 2573: cp++;
2574: while (*cp && (ParseIsEscaped(line, cp) ||
1.77 christos 2575: (*cp != ':') && (*cp != '!'))) {
1.117 dsl 2576: cp++;
2577: }
1.127 dsl 2578: if (*cp == '\0') {
2579: if (inLine) {
2580: Parse_Error(PARSE_WARNING,
2581: "Shell command needs a leading tab");
2582: goto shellCommand;
2583: }
2584: }
2585: }
1.11 mycroft 2586: #endif
1.127 dsl 2587: ParseFinishLine();
1.27 christos 2588:
1.127 dsl 2589: /*
2590: * For some reason - probably to make the parser impossible -
2591: * a ';' can be used to separate commands from dependencies.
2592: * No attempt is made to avoid ';' inside substitution patterns.
2593: */
2594: for (cp = line; *cp != 0; cp++) {
2595: if (*cp == '\\' && cp[1] != 0) {
2596: cp++;
2597: continue;
1.117 dsl 2598: }
1.127 dsl 2599: if (*cp == ';')
2600: break;
1.117 dsl 2601: }
1.127 dsl 2602: if (*cp != 0)
2603: /* Terminate the dependency list at the ';' */
1.133 dsl 2604: *cp++ = 0;
1.127 dsl 2605: else
2606: cp = NULL;
1.1 cgd 2607:
1.127 dsl 2608: /*
2609: * We now know it's a dependency line so it needs to have all
2610: * variables expanded before being parsed. Tell the variable
2611: * module to complain if some variable is undefined...
2612: */
2613: line = Var_Subst(NULL, line, VAR_CMD, TRUE);
1.27 christos 2614:
1.117 dsl 2615: /*
2616: * Need a non-circular list for the target nodes
2617: */
2618: if (targets)
2619: Lst_Destroy(targets, NOFREE);
1.9 jtc 2620:
1.117 dsl 2621: targets = Lst_Init(FALSE);
2622: inLine = TRUE;
1.27 christos 2623:
1.117 dsl 2624: ParseDoDependency(line);
1.127 dsl 2625: free(line);
2626:
2627: /* If there were commands after a ';', add them now */
2628: if (cp != NULL) {
2629: goto shellCommand;
2630: }
1.1 cgd 2631: }
2632: /*
1.27 christos 2633: * Reached EOF, but it may be just EOF of an include file...
1.1 cgd 2634: */
1.123 dsl 2635: } while (ParseEOF() == CONTINUE);
1.1 cgd 2636:
2637: if (fatals) {
1.63 christos 2638: (void)fprintf(stderr,
2639: "%s: Fatal errors encountered -- cannot continue\n",
2640: progname);
1.64 sjg 2641: PrintOnError(NULL);
1.103 christos 2642: exit(1);
1.1 cgd 2643: }
2644: }
2645:
2646: /*-
2647: *---------------------------------------------------------------------
2648: * Parse_Init --
2649: * initialize the parsing module
2650: *
2651: * Results:
2652: * none
2653: *
2654: * Side Effects:
2655: * the parseIncPath list is initialized...
2656: *---------------------------------------------------------------------
2657: */
1.5 cgd 2658: void
1.84 wiz 2659: Parse_Init(void)
1.1 cgd 2660: {
2661: mainNode = NILGNODE;
1.97 christos 2662: parseIncPath = Lst_Init(FALSE);
2663: sysIncPath = Lst_Init(FALSE);
2664: defIncPath = Lst_Init(FALSE);
2665: includes = Lst_Init(FALSE);
1.45 mycroft 2666: #ifdef CLEANUP
1.97 christos 2667: targCmds = Lst_Init(FALSE);
1.45 mycroft 2668: #endif
1.1 cgd 2669: }
1.9 jtc 2670:
2671: void
1.84 wiz 2672: Parse_End(void)
1.9 jtc 2673: {
1.45 mycroft 2674: #ifdef CLEANUP
1.106 christos 2675: Lst_Destroy(targCmds, (FreeProc *)free);
1.9 jtc 2676: if (targets)
2677: Lst_Destroy(targets, NOFREE);
1.74 tv 2678: Lst_Destroy(defIncPath, Dir_Destroy);
1.9 jtc 2679: Lst_Destroy(sysIncPath, Dir_Destroy);
2680: Lst_Destroy(parseIncPath, Dir_Destroy);
2681: Lst_Destroy(includes, NOFREE); /* Should be empty now */
1.45 mycroft 2682: #endif
1.9 jtc 2683: }
1.27 christos 2684:
1.1 cgd 2685:
2686: /*-
2687: *-----------------------------------------------------------------------
2688: * Parse_MainName --
2689: * Return a Lst of the main target to create for main()'s sake. If
2690: * no such target exists, we Punt with an obnoxious error message.
2691: *
2692: * Results:
2693: * A Lst of the single node to create.
2694: *
2695: * Side Effects:
2696: * None.
2697: *
2698: *-----------------------------------------------------------------------
2699: */
2700: Lst
1.84 wiz 2701: Parse_MainName(void)
1.1 cgd 2702: {
1.37 fair 2703: Lst mainList; /* result list */
1.1 cgd 2704:
1.97 christos 2705: mainList = Lst_Init(FALSE);
1.1 cgd 2706:
2707: if (mainNode == NILGNODE) {
1.97 christos 2708: Punt("no target to make.");
1.1 cgd 2709: /*NOTREACHED*/
2710: } else if (mainNode->type & OP_DOUBLEDEP) {
1.119 dsl 2711: (void)Lst_AtEnd(mainList, mainNode);
1.37 fair 2712: Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW);
1.1 cgd 2713: }
1.5 cgd 2714: else
1.119 dsl 2715: (void)Lst_AtEnd(mainList, mainNode);
1.81 pk 2716: Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL);
1.37 fair 2717: return (mainList);
1.59 christos 2718: }
2719:
2720: /*-
2721: *-----------------------------------------------------------------------
2722: * ParseMark --
2723: * Add the filename and lineno to the GNode so that we remember
2724: * where it was first defined.
2725: *
2726: * Side Effects:
2727: * None.
2728: *
2729: *-----------------------------------------------------------------------
2730: */
2731: static void
1.84 wiz 2732: ParseMark(GNode *gn)
1.59 christos 2733: {
1.125 dsl 2734: gn->fname = curFile->fname;
2735: gn->lineno = curFile->lineno;
1.1 cgd 2736: }
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