1 /* $NetBSD: parse.c,v 1.194 2014/02/15 00:17:17 christos Exp $ */
2
3 /*
4 * Copyright (c) 1988, 1989, 1990, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Adam de Boor.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 /*
36 * Copyright (c) 1989 by Berkeley Softworks
37 * All rights reserved.
38 *
39 * This code is derived from software contributed to Berkeley by
40 * Adam de Boor.
41 *
42 * Redistribution and use in source and binary forms, with or without
43 * modification, are permitted provided that the following conditions
44 * are met:
45 * 1. Redistributions of source code must retain the above copyright
46 * notice, this list of conditions and the following disclaimer.
47 * 2. Redistributions in binary form must reproduce the above copyright
48 * notice, this list of conditions and the following disclaimer in the
49 * documentation and/or other materials provided with the distribution.
50 * 3. All advertising materials mentioning features or use of this software
51 * must display the following acknowledgement:
52 * This product includes software developed by the University of
53 * California, Berkeley and its contributors.
54 * 4. Neither the name of the University nor the names of its contributors
55 * may be used to endorse or promote products derived from this software
56 * without specific prior written permission.
57 *
58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
68 * SUCH DAMAGE.
69 */
70
71 #ifndef MAKE_NATIVE
72 static char rcsid[] = "$NetBSD: parse.c,v 1.194 2014/02/15 00:17:17 christos Exp $";
73 #else
74 #include <sys/cdefs.h>
75 #ifndef lint
76 #if 0
77 static char sccsid[] = "@(#)parse.c 8.3 (Berkeley) 3/19/94";
78 #else
79 __RCSID("$NetBSD: parse.c,v 1.194 2014/02/15 00:17:17 christos Exp $");
80 #endif
81 #endif /* not lint */
82 #endif
83
84 /*-
85 * parse.c --
86 * Functions to parse a makefile.
87 *
88 * One function, Parse_Init, must be called before any functions
89 * in this module are used. After that, the function Parse_File is the
90 * main entry point and controls most of the other functions in this
91 * module.
92 *
93 * Most important structures are kept in Lsts. Directories for
94 * the .include "..." function are kept in the 'parseIncPath' Lst, while
95 * those for the .include <...> are kept in the 'sysIncPath' Lst. The
96 * targets currently being defined are kept in the 'targets' Lst.
97 *
98 * The variables 'fname' and 'lineno' are used to track the name
99 * of the current file and the line number in that file so that error
100 * messages can be more meaningful.
101 *
102 * Interface:
103 * Parse_Init Initialization function which must be
104 * called before anything else in this module
105 * is used.
106 *
107 * Parse_End Cleanup the module
108 *
109 * Parse_File Function used to parse a makefile. It must
110 * be given the name of the file, which should
111 * already have been opened, and a function
112 * to call to read a character from the file.
113 *
114 * Parse_IsVar Returns TRUE if the given line is a
115 * variable assignment. Used by MainParseArgs
116 * to determine if an argument is a target
117 * or a variable assignment. Used internally
118 * for pretty much the same thing...
119 *
120 * Parse_Error Function called when an error occurs in
121 * parsing. Used by the variable and
122 * conditional modules.
123 * Parse_MainName Returns a Lst of the main target to create.
124 */
125
126 #include <sys/types.h>
127 #include <sys/stat.h>
128 #include <assert.h>
129 #include <ctype.h>
130 #include <errno.h>
131 #include <fcntl.h>
132 #include <stdarg.h>
133 #include <stdio.h>
134
135 #include "make.h"
136 #include "hash.h"
137 #include "dir.h"
138 #include "job.h"
139 #include "buf.h"
140 #include "pathnames.h"
141
142 #ifdef HAVE_MMAP
143 #include <sys/mman.h>
144
145 #ifndef MAP_COPY
146 #define MAP_COPY MAP_PRIVATE
147 #endif
148 #ifndef MAP_FILE
149 #define MAP_FILE 0
150 #endif
151 #endif
152
153 ////////////////////////////////////////////////////////////
154 // types and constants
155
156 /*
157 * Structure for a file being read ("included file")
158 */
159 typedef struct IFile {
160 char *fname; /* name of file */
161 int lineno; /* current line number in file */
162 int first_lineno; /* line number of start of text */
163 int cond_depth; /* 'if' nesting when file opened */
164 char *P_str; /* point to base of string buffer */
165 char *P_ptr; /* point to next char of string buffer */
166 char *P_end; /* point to the end of string buffer */
167 char *(*nextbuf)(void *, size_t *); /* Function to get more data */
168 void *nextbuf_arg; /* Opaque arg for nextbuf() */
169 struct loadedfile *lf; /* loadedfile object, if any */
170 } IFile;
171
172
173 /*
174 * These values are returned by ParseEOF to tell Parse_File whether to
175 * CONTINUE parsing, i.e. it had only reached the end of an include file,
176 * or if it's DONE.
177 */
178 #define CONTINUE 1
179 #define DONE 0
180
181 /*
182 * Tokens for target attributes
183 */
184 typedef enum {
185 Begin, /* .BEGIN */
186 Default, /* .DEFAULT */
187 End, /* .END */
188 dotError, /* .ERROR */
189 Ignore, /* .IGNORE */
190 Includes, /* .INCLUDES */
191 Interrupt, /* .INTERRUPT */
192 Libs, /* .LIBS */
193 Meta, /* .META */
194 MFlags, /* .MFLAGS or .MAKEFLAGS */
195 Main, /* .MAIN and we don't have anything user-specified to
196 * make */
197 NoExport, /* .NOEXPORT */
198 NoMeta, /* .NOMETA */
199 NoMetaCmp, /* .NOMETA_CMP */
200 NoPath, /* .NOPATH */
201 Not, /* Not special */
202 NotParallel, /* .NOTPARALLEL */
203 Null, /* .NULL */
204 ExObjdir, /* .OBJDIR */
205 Order, /* .ORDER */
206 Parallel, /* .PARALLEL */
207 ExPath, /* .PATH */
208 Phony, /* .PHONY */
209 #ifdef POSIX
210 Posix, /* .POSIX */
211 #endif
212 Precious, /* .PRECIOUS */
213 ExShell, /* .SHELL */
214 Silent, /* .SILENT */
215 SingleShell, /* .SINGLESHELL */
216 Stale, /* .STALE */
217 Suffixes, /* .SUFFIXES */
218 Wait, /* .WAIT */
219 Attribute /* Generic attribute */
220 } ParseSpecial;
221
222 /*
223 * Other tokens
224 */
225 #define LPAREN '('
226 #define RPAREN ')'
227
228
229 ////////////////////////////////////////////////////////////
230 // result data
231
232 /*
233 * The main target to create. This is the first target on the first
234 * dependency line in the first makefile.
235 */
236 static GNode *mainNode;
237
238 ////////////////////////////////////////////////////////////
239 // eval state
240
241 /* targets we're working on */
242 static Lst targets;
243
244 #ifdef CLEANUP
245 /* command lines for targets */
246 static Lst targCmds;
247 #endif
248
249 /*
250 * specType contains the SPECial TYPE of the current target. It is
251 * Not if the target is unspecial. If it *is* special, however, the children
252 * are linked as children of the parent but not vice versa. This variable is
253 * set in ParseDoDependency
254 */
255 static ParseSpecial specType;
256
257 /*
258 * Predecessor node for handling .ORDER. Initialized to NULL when .ORDER
259 * seen, then set to each successive source on the line.
260 */
261 static GNode *predecessor;
262
263 ////////////////////////////////////////////////////////////
264 // parser state
265
266 /* true if currently in a dependency line or its commands */
267 static Boolean inLine;
268
269 /* number of fatal errors */
270 static int fatals = 0;
271
272 /*
273 * Variables for doing includes
274 */
275
276 /* current file being read */
277 static IFile *curFile;
278
279 /* stack of IFiles generated by .includes */
280 static Lst includes;
281
282 /* include paths (lists of directories) */
283 Lst parseIncPath; /* dirs for "..." includes */
284 Lst sysIncPath; /* dirs for <...> includes */
285 Lst defIncPath; /* default for sysIncPath */
286
287 ////////////////////////////////////////////////////////////
288 // parser tables
289
290 /*
291 * The parseKeywords table is searched using binary search when deciding
292 * if a target or source is special. The 'spec' field is the ParseSpecial
293 * type of the keyword ("Not" if the keyword isn't special as a target) while
294 * the 'op' field is the operator to apply to the list of targets if the
295 * keyword is used as a source ("0" if the keyword isn't special as a source)
296 */
297 static const struct {
298 const char *name; /* Name of keyword */
299 ParseSpecial spec; /* Type when used as a target */
300 int op; /* Operator when used as a source */
301 } parseKeywords[] = {
302 { ".BEGIN", Begin, 0 },
303 { ".DEFAULT", Default, 0 },
304 { ".END", End, 0 },
305 { ".ERROR", dotError, 0 },
306 { ".EXEC", Attribute, OP_EXEC },
307 { ".IGNORE", Ignore, OP_IGNORE },
308 { ".INCLUDES", Includes, 0 },
309 { ".INTERRUPT", Interrupt, 0 },
310 { ".INVISIBLE", Attribute, OP_INVISIBLE },
311 { ".JOIN", Attribute, OP_JOIN },
312 { ".LIBS", Libs, 0 },
313 { ".MADE", Attribute, OP_MADE },
314 { ".MAIN", Main, 0 },
315 { ".MAKE", Attribute, OP_MAKE },
316 { ".MAKEFLAGS", MFlags, 0 },
317 { ".META", Meta, OP_META },
318 { ".MFLAGS", MFlags, 0 },
319 { ".NOMETA", NoMeta, OP_NOMETA },
320 { ".NOMETA_CMP", NoMetaCmp, OP_NOMETA_CMP },
321 { ".NOPATH", NoPath, OP_NOPATH },
322 { ".NOTMAIN", Attribute, OP_NOTMAIN },
323 { ".NOTPARALLEL", NotParallel, 0 },
324 { ".NO_PARALLEL", NotParallel, 0 },
325 { ".NULL", Null, 0 },
326 { ".OBJDIR", ExObjdir, 0 },
327 { ".OPTIONAL", Attribute, OP_OPTIONAL },
328 { ".ORDER", Order, 0 },
329 { ".PARALLEL", Parallel, 0 },
330 { ".PATH", ExPath, 0 },
331 { ".PHONY", Phony, OP_PHONY },
332 #ifdef POSIX
333 { ".POSIX", Posix, 0 },
334 #endif
335 { ".PRECIOUS", Precious, OP_PRECIOUS },
336 { ".RECURSIVE", Attribute, OP_MAKE },
337 { ".SHELL", ExShell, 0 },
338 { ".SILENT", Silent, OP_SILENT },
339 { ".SINGLESHELL", SingleShell, 0 },
340 { ".STALE", Stale, 0 },
341 { ".SUFFIXES", Suffixes, 0 },
342 { ".USE", Attribute, OP_USE },
343 { ".USEBEFORE", Attribute, OP_USEBEFORE },
344 { ".WAIT", Wait, 0 },
345 };
346
347 ////////////////////////////////////////////////////////////
348 // local functions
349
350 static int ParseIsEscaped(const char *, const char *);
351 static void ParseErrorInternal(const char *, size_t, int, const char *, ...)
352 MAKE_ATTR_PRINTFLIKE(4,5);
353 static void ParseVErrorInternal(FILE *, const char *, size_t, int, const char *, va_list)
354 MAKE_ATTR_PRINTFLIKE(5, 0);
355 static int ParseFindKeyword(const char *);
356 static int ParseLinkSrc(void *, void *);
357 static int ParseDoOp(void *, void *);
358 static void ParseDoSrc(int, const char *);
359 static int ParseFindMain(void *, void *);
360 static int ParseAddDir(void *, void *);
361 static int ParseClearPath(void *, void *);
362 static void ParseDoDependency(char *);
363 static int ParseAddCmd(void *, void *);
364 static void ParseHasCommands(void *);
365 static void ParseDoInclude(char *);
366 static void ParseSetParseFile(const char *);
367 static void ParseSetIncludedFile(void);
368 #ifdef SYSVINCLUDE
369 static void ParseTraditionalInclude(char *);
370 #endif
371 #ifdef GMAKEEXPORT
372 static void ParseGmakeExport(char *);
373 #endif
374 static int ParseEOF(void);
375 static char *ParseReadLine(void);
376 static void ParseFinishLine(void);
377 static void ParseMark(GNode *);
378
379 ////////////////////////////////////////////////////////////
380 // file loader
381
382 struct loadedfile {
383 const char *path; /* name, for error reports */
384 char *buf; /* contents buffer */
385 size_t len; /* length of contents */
386 size_t maplen; /* length of mmap area, or 0 */
387 Boolean used; /* XXX: have we used the data yet */
388 };
389
390 /*
391 * Constructor/destructor for loadedfile
392 */
393 static struct loadedfile *
loadedfile_create(const char * path)394 loadedfile_create(const char *path)
395 {
396 struct loadedfile *lf;
397
398 lf = bmake_malloc(sizeof(*lf));
399 lf->path = (path == NULL ? "(stdin)" : path);
400 lf->buf = NULL;
401 lf->len = 0;
402 lf->maplen = 0;
403 lf->used = FALSE;
404 return lf;
405 }
406
407 static void
loadedfile_destroy(struct loadedfile * lf)408 loadedfile_destroy(struct loadedfile *lf)
409 {
410 if (lf->buf != NULL) {
411 if (lf->maplen > 0) {
412 #ifdef HAVE_MMAP
413 munmap(lf->buf, lf->maplen);
414 #endif
415 } else {
416 free(lf->buf);
417 }
418 }
419 free(lf);
420 }
421
422 /*
423 * nextbuf() operation for loadedfile, as needed by the weird and twisted
424 * logic below. Once that's cleaned up, we can get rid of lf->used...
425 */
426 static char *
loadedfile_nextbuf(void * x,size_t * len)427 loadedfile_nextbuf(void *x, size_t *len)
428 {
429 struct loadedfile *lf = x;
430
431 if (lf->used) {
432 return NULL;
433 }
434 lf->used = TRUE;
435 *len = lf->len;
436 return lf->buf;
437 }
438
439 /*
440 * Try to get the size of a file.
441 */
442 static ReturnStatus
load_getsize(int fd,size_t * ret)443 load_getsize(int fd, size_t *ret)
444 {
445 struct stat st;
446
447 if (fstat(fd, &st) < 0) {
448 return FAILURE;
449 }
450
451 if (!S_ISREG(st.st_mode)) {
452 return FAILURE;
453 }
454
455 /*
456 * st_size is an off_t, which is 64 bits signed; *ret is
457 * size_t, which might be 32 bits unsigned or 64 bits
458 * unsigned. Rather than being elaborate, just punt on
459 * files that are more than 2^31 bytes. We should never
460 * see a makefile that size in practice...
461 *
462 * While we're at it reject negative sizes too, just in case.
463 */
464 if (st.st_size < 0 || st.st_size > 0x7fffffff) {
465 return FAILURE;
466 }
467
468 *ret = (size_t) st.st_size;
469 return SUCCESS;
470 }
471
472 /*
473 * Read in a file.
474 *
475 * Until the path search logic can be moved under here instead of
476 * being in the caller in another source file, we need to have the fd
477 * passed in already open. Bleh.
478 *
479 * If the path is NULL use stdin and (to insure against fd leaks)
480 * assert that the caller passed in -1.
481 */
482 static struct loadedfile *
loadfile(const char * path,int fd)483 loadfile(const char *path, int fd)
484 {
485 struct loadedfile *lf;
486 #ifdef HAVE_MMAP
487 long pagesize;
488 #endif
489 ssize_t result;
490 size_t bufpos;
491
492 lf = loadedfile_create(path);
493
494 if (path == NULL) {
495 assert(fd == -1);
496 fd = STDIN_FILENO;
497 } else {
498 #if 0 /* notyet */
499 fd = open(path, O_RDONLY);
500 if (fd < 0) {
501 ...
502 Error("%s: %s", path, strerror(errno));
503 exit(1);
504 }
505 #endif
506 }
507
508 #ifdef HAVE_MMAP
509 if (load_getsize(fd, &lf->len) == SUCCESS) {
510 /* found a size, try mmap */
511 pagesize = sysconf(_SC_PAGESIZE);
512 if (pagesize <= 0) {
513 pagesize = 0x1000;
514 }
515 /* round size up to a page */
516 lf->maplen = pagesize * ((lf->len + pagesize - 1)/pagesize);
517
518 /*
519 * XXX hack for dealing with empty files; remove when
520 * we're no longer limited by interfacing to the old
521 * logic elsewhere in this file.
522 */
523 if (lf->maplen == 0) {
524 lf->maplen = pagesize;
525 }
526
527 /*
528 * FUTURE: remove PROT_WRITE when the parser no longer
529 * needs to scribble on the input.
530 */
531 lf->buf = mmap(NULL, lf->maplen, PROT_READ|PROT_WRITE,
532 MAP_FILE|MAP_COPY, fd, 0);
533 if (lf->buf != MAP_FAILED) {
534 /* succeeded */
535 if (lf->len == lf->maplen && lf->buf[lf->len - 1] != '\n') {
536 char *b = malloc(lf->len + 1);
537 b[lf->len] = '\n';
538 memcpy(b, lf->buf, lf->len++);
539 munmap(lf->buf, lf->maplen);
540 lf->maplen = 0;
541 lf->buf = b;
542 }
543 goto done;
544 }
545 }
546 #endif
547 /* cannot mmap; load the traditional way */
548
549 lf->maplen = 0;
550 lf->len = 1024;
551 lf->buf = bmake_malloc(lf->len);
552
553 bufpos = 0;
554 while (1) {
555 assert(bufpos <= lf->len);
556 if (bufpos == lf->len) {
557 lf->len *= 2;
558 lf->buf = bmake_realloc(lf->buf, lf->len);
559 }
560 result = read(fd, lf->buf + bufpos, lf->len - bufpos);
561 if (result < 0) {
562 Error("%s: read error: %s", path, strerror(errno));
563 exit(1);
564 }
565 if (result == 0) {
566 break;
567 }
568 bufpos += result;
569 }
570 assert(bufpos <= lf->len);
571 lf->len = bufpos;
572
573 /* truncate malloc region to actual length (maybe not useful) */
574 if (lf->len > 0) {
575 lf->buf = bmake_realloc(lf->buf, lf->len);
576 }
577
578 #ifdef HAVE_MMAP
579 done:
580 #endif
581 if (path != NULL) {
582 close(fd);
583 }
584 return lf;
585 }
586
587 ////////////////////////////////////////////////////////////
588 // old code
589
590 /*-
591 *----------------------------------------------------------------------
592 * ParseIsEscaped --
593 * Check if the current character is escaped on the current line
594 *
595 * Results:
596 * 0 if the character is not backslash escaped, 1 otherwise
597 *
598 * Side Effects:
599 * None
600 *----------------------------------------------------------------------
601 */
602 static int
ParseIsEscaped(const char * line,const char * c)603 ParseIsEscaped(const char *line, const char *c)
604 {
605 int active = 0;
606 for (;;) {
607 if (line == c)
608 return active;
609 if (*--c != '\\')
610 return active;
611 active = !active;
612 }
613 }
614
615 /*-
616 *----------------------------------------------------------------------
617 * ParseFindKeyword --
618 * Look in the table of keywords for one matching the given string.
619 *
620 * Input:
621 * str String to find
622 *
623 * Results:
624 * The index of the keyword, or -1 if it isn't there.
625 *
626 * Side Effects:
627 * None
628 *----------------------------------------------------------------------
629 */
630 static int
ParseFindKeyword(const char * str)631 ParseFindKeyword(const char *str)
632 {
633 int start, end, cur;
634 int diff;
635
636 start = 0;
637 end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1;
638
639 do {
640 cur = start + ((end - start) / 2);
641 diff = strcmp(str, parseKeywords[cur].name);
642
643 if (diff == 0) {
644 return (cur);
645 } else if (diff < 0) {
646 end = cur - 1;
647 } else {
648 start = cur + 1;
649 }
650 } while (start <= end);
651 return (-1);
652 }
653
654 /*-
655 * ParseVErrorInternal --
656 * Error message abort function for parsing. Prints out the context
657 * of the error (line number and file) as well as the message with
658 * two optional arguments.
659 *
660 * Results:
661 * None
662 *
663 * Side Effects:
664 * "fatals" is incremented if the level is PARSE_FATAL.
665 */
666 /* VARARGS */
667 static void
ParseVErrorInternal(FILE * f,const char * cfname,size_t clineno,int type,const char * fmt,va_list ap)668 ParseVErrorInternal(FILE *f, const char *cfname, size_t clineno, int type,
669 const char *fmt, va_list ap)
670 {
671 static Boolean fatal_warning_error_printed = FALSE;
672
673 (void)fprintf(f, "%s: ", progname);
674
675 if (cfname != NULL) {
676 (void)fprintf(f, "\"");
677 if (*cfname != '/' && strcmp(cfname, "(stdin)") != 0) {
678 char *cp;
679 const char *dir;
680
681 /*
682 * Nothing is more annoying than not knowing
683 * which Makefile is the culprit.
684 */
685 dir = Var_Value(".PARSEDIR", VAR_GLOBAL, &cp);
686 if (dir == NULL || *dir == '\0' ||
687 (*dir == '.' && dir[1] == '\0'))
688 dir = Var_Value(".CURDIR", VAR_GLOBAL, &cp);
689 if (dir == NULL)
690 dir = ".";
691
692 (void)fprintf(f, "%s/%s", dir, cfname);
693 } else
694 (void)fprintf(f, "%s", cfname);
695
696 (void)fprintf(f, "\" line %d: ", (int)clineno);
697 }
698 if (type == PARSE_WARNING)
699 (void)fprintf(f, "warning: ");
700 (void)vfprintf(f, fmt, ap);
701 (void)fprintf(f, "\n");
702 (void)fflush(f);
703 if (type == PARSE_FATAL || parseWarnFatal)
704 fatals += 1;
705 if (parseWarnFatal && !fatal_warning_error_printed) {
706 Error("parsing warnings being treated as errors");
707 fatal_warning_error_printed = TRUE;
708 }
709 }
710
711 /*-
712 * ParseErrorInternal --
713 * Error function
714 *
715 * Results:
716 * None
717 *
718 * Side Effects:
719 * None
720 */
721 /* VARARGS */
722 static void
ParseErrorInternal(const char * cfname,size_t clineno,int type,const char * fmt,...)723 ParseErrorInternal(const char *cfname, size_t clineno, int type,
724 const char *fmt, ...)
725 {
726 va_list ap;
727
728 va_start(ap, fmt);
729 (void)fflush(stdout);
730 ParseVErrorInternal(stderr, cfname, clineno, type, fmt, ap);
731 va_end(ap);
732
733 if (debug_file != stderr && debug_file != stdout) {
734 va_start(ap, fmt);
735 ParseVErrorInternal(debug_file, cfname, clineno, type, fmt, ap);
736 va_end(ap);
737 }
738 }
739
740 /*-
741 * Parse_Error --
742 * External interface to ParseErrorInternal; uses the default filename
743 * Line number.
744 *
745 * Results:
746 * None
747 *
748 * Side Effects:
749 * None
750 */
751 /* VARARGS */
752 void
Parse_Error(int type,const char * fmt,...)753 Parse_Error(int type, const char *fmt, ...)
754 {
755 va_list ap;
756 const char *fname;
757 size_t lineno;
758
759 if (curFile == NULL) {
760 fname = NULL;
761 lineno = 0;
762 } else {
763 fname = curFile->fname;
764 lineno = curFile->lineno;
765 }
766
767 va_start(ap, fmt);
768 (void)fflush(stdout);
769 ParseVErrorInternal(stderr, fname, lineno, type, fmt, ap);
770 va_end(ap);
771
772 if (debug_file != stderr && debug_file != stdout) {
773 va_start(ap, fmt);
774 ParseVErrorInternal(debug_file, fname, lineno, type, fmt, ap);
775 va_end(ap);
776 }
777 }
778
779
780 /*
781 * ParseMessage
782 * Parse a .info .warning or .error directive
783 *
784 * The input is the line minus the ".". We substitute
785 * variables, print the message and exit(1) (for .error) or just print
786 * a warning if the directive is malformed.
787 */
788 static Boolean
ParseMessage(char * line)789 ParseMessage(char *line)
790 {
791 int mtype;
792
793 switch(*line) {
794 case 'i':
795 mtype = 0;
796 break;
797 case 'w':
798 mtype = PARSE_WARNING;
799 break;
800 case 'e':
801 mtype = PARSE_FATAL;
802 break;
803 default:
804 Parse_Error(PARSE_WARNING, "invalid syntax: \".%s\"", line);
805 return FALSE;
806 }
807
808 while (isalpha((u_char)*line))
809 line++;
810 if (!isspace((u_char)*line))
811 return FALSE; /* not for us */
812 while (isspace((u_char)*line))
813 line++;
814
815 line = Var_Subst(NULL, line, VAR_CMD, 0);
816 Parse_Error(mtype, "%s", line);
817 free(line);
818
819 if (mtype == PARSE_FATAL) {
820 /* Terminate immediately. */
821 exit(1);
822 }
823 return TRUE;
824 }
825
826 /*-
827 *---------------------------------------------------------------------
828 * ParseLinkSrc --
829 * Link the parent node to its new child. Used in a Lst_ForEach by
830 * ParseDoDependency. If the specType isn't 'Not', the parent
831 * isn't linked as a parent of the child.
832 *
833 * Input:
834 * pgnp The parent node
835 * cgpn The child node
836 *
837 * Results:
838 * Always = 0
839 *
840 * Side Effects:
841 * New elements are added to the parents list of cgn and the
842 * children list of cgn. the unmade field of pgn is updated
843 * to reflect the additional child.
844 *---------------------------------------------------------------------
845 */
846 static int
ParseLinkSrc(void * pgnp,void * cgnp)847 ParseLinkSrc(void *pgnp, void *cgnp)
848 {
849 GNode *pgn = (GNode *)pgnp;
850 GNode *cgn = (GNode *)cgnp;
851
852 if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts))
853 pgn = (GNode *)Lst_Datum(Lst_Last(pgn->cohorts));
854 (void)Lst_AtEnd(pgn->children, cgn);
855 if (specType == Not)
856 (void)Lst_AtEnd(cgn->parents, pgn);
857 pgn->unmade += 1;
858 if (DEBUG(PARSE)) {
859 fprintf(debug_file, "# %s: added child %s - %s\n", __func__,
860 pgn->name, cgn->name);
861 Targ_PrintNode(pgn, 0);
862 Targ_PrintNode(cgn, 0);
863 }
864 return (0);
865 }
866
867 /*-
868 *---------------------------------------------------------------------
869 * ParseDoOp --
870 * Apply the parsed operator to the given target node. Used in a
871 * Lst_ForEach call by ParseDoDependency once all targets have
872 * been found and their operator parsed. If the previous and new
873 * operators are incompatible, a major error is taken.
874 *
875 * Input:
876 * gnp The node to which the operator is to be applied
877 * opp The operator to apply
878 *
879 * Results:
880 * Always 0
881 *
882 * Side Effects:
883 * The type field of the node is altered to reflect any new bits in
884 * the op.
885 *---------------------------------------------------------------------
886 */
887 static int
ParseDoOp(void * gnp,void * opp)888 ParseDoOp(void *gnp, void *opp)
889 {
890 GNode *gn = (GNode *)gnp;
891 int op = *(int *)opp;
892 /*
893 * If the dependency mask of the operator and the node don't match and
894 * the node has actually had an operator applied to it before, and
895 * the operator actually has some dependency information in it, complain.
896 */
897 if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) &&
898 !OP_NOP(gn->type) && !OP_NOP(op))
899 {
900 Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name);
901 return (1);
902 }
903
904 if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) {
905 /*
906 * If the node was the object of a :: operator, we need to create a
907 * new instance of it for the children and commands on this dependency
908 * line. The new instance is placed on the 'cohorts' list of the
909 * initial one (note the initial one is not on its own cohorts list)
910 * and the new instance is linked to all parents of the initial
911 * instance.
912 */
913 GNode *cohort;
914
915 /*
916 * Propagate copied bits to the initial node. They'll be propagated
917 * back to the rest of the cohorts later.
918 */
919 gn->type |= op & ~OP_OPMASK;
920
921 cohort = Targ_FindNode(gn->name, TARG_NOHASH);
922 if (doing_depend)
923 ParseMark(cohort);
924 /*
925 * Make the cohort invisible as well to avoid duplicating it into
926 * other variables. True, parents of this target won't tend to do
927 * anything with their local variables, but better safe than
928 * sorry. (I think this is pointless now, since the relevant list
929 * traversals will no longer see this node anyway. -mycroft)
930 */
931 cohort->type = op | OP_INVISIBLE;
932 (void)Lst_AtEnd(gn->cohorts, cohort);
933 cohort->centurion = gn;
934 gn->unmade_cohorts += 1;
935 snprintf(cohort->cohort_num, sizeof cohort->cohort_num, "#%d",
936 gn->unmade_cohorts);
937 } else {
938 /*
939 * We don't want to nuke any previous flags (whatever they were) so we
940 * just OR the new operator into the old
941 */
942 gn->type |= op;
943 }
944
945 return (0);
946 }
947
948 /*-
949 *---------------------------------------------------------------------
950 * ParseDoSrc --
951 * Given the name of a source, figure out if it is an attribute
952 * and apply it to the targets if it is. Else decide if there is
953 * some attribute which should be applied *to* the source because
954 * of some special target and apply it if so. Otherwise, make the
955 * source be a child of the targets in the list 'targets'
956 *
957 * Input:
958 * tOp operator (if any) from special targets
959 * src name of the source to handle
960 *
961 * Results:
962 * None
963 *
964 * Side Effects:
965 * Operator bits may be added to the list of targets or to the source.
966 * The targets may have a new source added to their lists of children.
967 *---------------------------------------------------------------------
968 */
969 static void
ParseDoSrc(int tOp,const char * src)970 ParseDoSrc(int tOp, const char *src)
971 {
972 GNode *gn = NULL;
973 static int wait_number = 0;
974 char wait_src[16];
975
976 if (*src == '.' && isupper ((unsigned char)src[1])) {
977 int keywd = ParseFindKeyword(src);
978 if (keywd != -1) {
979 int op = parseKeywords[keywd].op;
980 if (op != 0) {
981 Lst_ForEach(targets, ParseDoOp, &op);
982 return;
983 }
984 if (parseKeywords[keywd].spec == Wait) {
985 /*
986 * We add a .WAIT node in the dependency list.
987 * After any dynamic dependencies (and filename globbing)
988 * have happened, it is given a dependency on the each
989 * previous child back to and previous .WAIT node.
990 * The next child won't be scheduled until the .WAIT node
991 * is built.
992 * We give each .WAIT node a unique name (mainly for diag).
993 */
994 snprintf(wait_src, sizeof wait_src, ".WAIT_%u", ++wait_number);
995 gn = Targ_FindNode(wait_src, TARG_NOHASH);
996 if (doing_depend)
997 ParseMark(gn);
998 gn->type = OP_WAIT | OP_PHONY | OP_DEPENDS | OP_NOTMAIN;
999 Lst_ForEach(targets, ParseLinkSrc, gn);
1000 return;
1001 }
1002 }
1003 }
1004
1005 switch (specType) {
1006 case Main:
1007 /*
1008 * If we have noted the existence of a .MAIN, it means we need
1009 * to add the sources of said target to the list of things
1010 * to create. The string 'src' is likely to be free, so we
1011 * must make a new copy of it. Note that this will only be
1012 * invoked if the user didn't specify a target on the command
1013 * line. This is to allow #ifmake's to succeed, or something...
1014 */
1015 (void)Lst_AtEnd(create, bmake_strdup(src));
1016 /*
1017 * Add the name to the .TARGETS variable as well, so the user can
1018 * employ that, if desired.
1019 */
1020 Var_Append(".TARGETS", src, VAR_GLOBAL);
1021 return;
1022
1023 case Order:
1024 /*
1025 * Create proper predecessor/successor links between the previous
1026 * source and the current one.
1027 */
1028 gn = Targ_FindNode(src, TARG_CREATE);
1029 if (doing_depend)
1030 ParseMark(gn);
1031 if (predecessor != NULL) {
1032 (void)Lst_AtEnd(predecessor->order_succ, gn);
1033 (void)Lst_AtEnd(gn->order_pred, predecessor);
1034 if (DEBUG(PARSE)) {
1035 fprintf(debug_file, "# %s: added Order dependency %s - %s\n",
1036 __func__, predecessor->name, gn->name);
1037 Targ_PrintNode(predecessor, 0);
1038 Targ_PrintNode(gn, 0);
1039 }
1040 }
1041 /*
1042 * The current source now becomes the predecessor for the next one.
1043 */
1044 predecessor = gn;
1045 break;
1046
1047 default:
1048 /*
1049 * If the source is not an attribute, we need to find/create
1050 * a node for it. After that we can apply any operator to it
1051 * from a special target or link it to its parents, as
1052 * appropriate.
1053 *
1054 * In the case of a source that was the object of a :: operator,
1055 * the attribute is applied to all of its instances (as kept in
1056 * the 'cohorts' list of the node) or all the cohorts are linked
1057 * to all the targets.
1058 */
1059
1060 /* Find/create the 'src' node and attach to all targets */
1061 gn = Targ_FindNode(src, TARG_CREATE);
1062 if (doing_depend)
1063 ParseMark(gn);
1064 if (tOp) {
1065 gn->type |= tOp;
1066 } else {
1067 Lst_ForEach(targets, ParseLinkSrc, gn);
1068 }
1069 break;
1070 }
1071 }
1072
1073 /*-
1074 *-----------------------------------------------------------------------
1075 * ParseFindMain --
1076 * Find a real target in the list and set it to be the main one.
1077 * Called by ParseDoDependency when a main target hasn't been found
1078 * yet.
1079 *
1080 * Input:
1081 * gnp Node to examine
1082 *
1083 * Results:
1084 * 0 if main not found yet, 1 if it is.
1085 *
1086 * Side Effects:
1087 * mainNode is changed and Targ_SetMain is called.
1088 *
1089 *-----------------------------------------------------------------------
1090 */
1091 static int
ParseFindMain(void * gnp,void * dummy)1092 ParseFindMain(void *gnp, void *dummy)
1093 {
1094 GNode *gn = (GNode *)gnp;
1095 if ((gn->type & OP_NOTARGET) == 0) {
1096 mainNode = gn;
1097 Targ_SetMain(gn);
1098 return (dummy ? 1 : 1);
1099 } else {
1100 return (dummy ? 0 : 0);
1101 }
1102 }
1103
1104 /*-
1105 *-----------------------------------------------------------------------
1106 * ParseAddDir --
1107 * Front-end for Dir_AddDir to make sure Lst_ForEach keeps going
1108 *
1109 * Results:
1110 * === 0
1111 *
1112 * Side Effects:
1113 * See Dir_AddDir.
1114 *
1115 *-----------------------------------------------------------------------
1116 */
1117 static int
ParseAddDir(void * path,void * name)1118 ParseAddDir(void *path, void *name)
1119 {
1120 (void)Dir_AddDir((Lst) path, (char *)name);
1121 return(0);
1122 }
1123
1124 /*-
1125 *-----------------------------------------------------------------------
1126 * ParseClearPath --
1127 * Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going
1128 *
1129 * Results:
1130 * === 0
1131 *
1132 * Side Effects:
1133 * See Dir_ClearPath
1134 *
1135 *-----------------------------------------------------------------------
1136 */
1137 static int
ParseClearPath(void * path,void * dummy)1138 ParseClearPath(void *path, void *dummy)
1139 {
1140 Dir_ClearPath((Lst) path);
1141 return(dummy ? 0 : 0);
1142 }
1143
1144 /*-
1145 *---------------------------------------------------------------------
1146 * ParseDoDependency --
1147 * Parse the dependency line in line.
1148 *
1149 * Input:
1150 * line the line to parse
1151 *
1152 * Results:
1153 * None
1154 *
1155 * Side Effects:
1156 * The nodes of the sources are linked as children to the nodes of the
1157 * targets. Some nodes may be created.
1158 *
1159 * We parse a dependency line by first extracting words from the line and
1160 * finding nodes in the list of all targets with that name. This is done
1161 * until a character is encountered which is an operator character. Currently
1162 * these are only ! and :. At this point the operator is parsed and the
1163 * pointer into the line advanced until the first source is encountered.
1164 * The parsed operator is applied to each node in the 'targets' list,
1165 * which is where the nodes found for the targets are kept, by means of
1166 * the ParseDoOp function.
1167 * The sources are read in much the same way as the targets were except
1168 * that now they are expanded using the wildcarding scheme of the C-Shell
1169 * and all instances of the resulting words in the list of all targets
1170 * are found. Each of the resulting nodes is then linked to each of the
1171 * targets as one of its children.
1172 * Certain targets are handled specially. These are the ones detailed
1173 * by the specType variable.
1174 * The storing of transformation rules is also taken care of here.
1175 * A target is recognized as a transformation rule by calling
1176 * Suff_IsTransform. If it is a transformation rule, its node is gotten
1177 * from the suffix module via Suff_AddTransform rather than the standard
1178 * Targ_FindNode in the target module.
1179 *---------------------------------------------------------------------
1180 */
1181 static void
ParseDoDependency(char * line)1182 ParseDoDependency(char *line)
1183 {
1184 char *cp; /* our current position */
1185 GNode *gn = NULL; /* a general purpose temporary node */
1186 int op; /* the operator on the line */
1187 char savec; /* a place to save a character */
1188 Lst paths; /* List of search paths to alter when parsing
1189 * a list of .PATH targets */
1190 int tOp; /* operator from special target */
1191 Lst sources; /* list of archive source names after
1192 * expansion */
1193 Lst curTargs; /* list of target names to be found and added
1194 * to the targets list */
1195 char *lstart = line;
1196
1197 if (DEBUG(PARSE))
1198 fprintf(debug_file, "ParseDoDependency(%s)\n", line);
1199 tOp = 0;
1200
1201 specType = Not;
1202 paths = NULL;
1203
1204 curTargs = Lst_Init(FALSE);
1205
1206 do {
1207 for (cp = line; *cp && (ParseIsEscaped(lstart, cp) ||
1208 !(isspace((unsigned char)*cp) ||
1209 *cp == '!' || *cp == ':' || *cp == LPAREN));
1210 cp++) {
1211 if (*cp == '$') {
1212 /*
1213 * Must be a dynamic source (would have been expanded
1214 * otherwise), so call the Var module to parse the puppy
1215 * so we can safely advance beyond it...There should be
1216 * no errors in this, as they would have been discovered
1217 * in the initial Var_Subst and we wouldn't be here.
1218 */
1219 int length;
1220 void *freeIt;
1221
1222 (void)Var_Parse(cp, VAR_CMD, TRUE, &length, &freeIt);
1223 if (freeIt)
1224 free(freeIt);
1225 cp += length-1;
1226 }
1227 }
1228
1229 if (!ParseIsEscaped(lstart, cp) && *cp == LPAREN) {
1230 /*
1231 * Archives must be handled specially to make sure the OP_ARCHV
1232 * flag is set in their 'type' field, for one thing, and because
1233 * things like "archive(file1.o file2.o file3.o)" are permissible.
1234 * Arch_ParseArchive will set 'line' to be the first non-blank
1235 * after the archive-spec. It creates/finds nodes for the members
1236 * and places them on the given list, returning SUCCESS if all
1237 * went well and FAILURE if there was an error in the
1238 * specification. On error, line should remain untouched.
1239 */
1240 if (Arch_ParseArchive(&line, targets, VAR_CMD) != SUCCESS) {
1241 Parse_Error(PARSE_FATAL,
1242 "Error in archive specification: \"%s\"", line);
1243 goto out;
1244 } else {
1245 continue;
1246 }
1247 }
1248 savec = *cp;
1249
1250 if (!*cp) {
1251 /*
1252 * Ending a dependency line without an operator is a Bozo
1253 * no-no. As a heuristic, this is also often triggered by
1254 * undetected conflicts from cvs/rcs merges.
1255 */
1256 if ((strncmp(line, "<<<<<<", 6) == 0) ||
1257 (strncmp(line, "======", 6) == 0) ||
1258 (strncmp(line, ">>>>>>", 6) == 0))
1259 Parse_Error(PARSE_FATAL,
1260 "Makefile appears to contain unresolved cvs/rcs/??? merge conflicts");
1261 else
1262 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive"
1263 : "Need an operator");
1264 goto out;
1265 }
1266 *cp = '\0';
1267
1268 /*
1269 * Have a word in line. See if it's a special target and set
1270 * specType to match it.
1271 */
1272 if (*line == '.' && isupper ((unsigned char)line[1])) {
1273 /*
1274 * See if the target is a special target that must have it
1275 * or its sources handled specially.
1276 */
1277 int keywd = ParseFindKeyword(line);
1278 if (keywd != -1) {
1279 if (specType == ExPath && parseKeywords[keywd].spec != ExPath) {
1280 Parse_Error(PARSE_FATAL, "Mismatched special targets");
1281 goto out;
1282 }
1283
1284 specType = parseKeywords[keywd].spec;
1285 tOp = parseKeywords[keywd].op;
1286
1287 /*
1288 * Certain special targets have special semantics:
1289 * .PATH Have to set the dirSearchPath
1290 * variable too
1291 * .MAIN Its sources are only used if
1292 * nothing has been specified to
1293 * create.
1294 * .DEFAULT Need to create a node to hang
1295 * commands on, but we don't want
1296 * it in the graph, nor do we want
1297 * it to be the Main Target, so we
1298 * create it, set OP_NOTMAIN and
1299 * add it to the list, setting
1300 * DEFAULT to the new node for
1301 * later use. We claim the node is
1302 * A transformation rule to make
1303 * life easier later, when we'll
1304 * use Make_HandleUse to actually
1305 * apply the .DEFAULT commands.
1306 * .PHONY The list of targets
1307 * .NOPATH Don't search for file in the path
1308 * .STALE
1309 * .BEGIN
1310 * .END
1311 * .ERROR
1312 * .INTERRUPT Are not to be considered the
1313 * main target.
1314 * .NOTPARALLEL Make only one target at a time.
1315 * .SINGLESHELL Create a shell for each command.
1316 * .ORDER Must set initial predecessor to NULL
1317 */
1318 switch (specType) {
1319 case ExPath:
1320 if (paths == NULL) {
1321 paths = Lst_Init(FALSE);
1322 }
1323 (void)Lst_AtEnd(paths, dirSearchPath);
1324 break;
1325 case Main:
1326 if (!Lst_IsEmpty(create)) {
1327 specType = Not;
1328 }
1329 break;
1330 case Begin:
1331 case End:
1332 case Stale:
1333 case dotError:
1334 case Interrupt:
1335 gn = Targ_FindNode(line, TARG_CREATE);
1336 if (doing_depend)
1337 ParseMark(gn);
1338 gn->type |= OP_NOTMAIN|OP_SPECIAL;
1339 (void)Lst_AtEnd(targets, gn);
1340 break;
1341 case Default:
1342 gn = Targ_NewGN(".DEFAULT");
1343 gn->type |= (OP_NOTMAIN|OP_TRANSFORM);
1344 (void)Lst_AtEnd(targets, gn);
1345 DEFAULT = gn;
1346 break;
1347 case NotParallel:
1348 maxJobs = 1;
1349 break;
1350 case SingleShell:
1351 compatMake = TRUE;
1352 break;
1353 case Order:
1354 predecessor = NULL;
1355 break;
1356 default:
1357 break;
1358 }
1359 } else if (strncmp(line, ".PATH", 5) == 0) {
1360 /*
1361 * .PATH<suffix> has to be handled specially.
1362 * Call on the suffix module to give us a path to
1363 * modify.
1364 */
1365 Lst path;
1366
1367 specType = ExPath;
1368 path = Suff_GetPath(&line[5]);
1369 if (path == NULL) {
1370 Parse_Error(PARSE_FATAL,
1371 "Suffix '%s' not defined (yet)",
1372 &line[5]);
1373 goto out;
1374 } else {
1375 if (paths == NULL) {
1376 paths = Lst_Init(FALSE);
1377 }
1378 (void)Lst_AtEnd(paths, path);
1379 }
1380 }
1381 }
1382
1383 /*
1384 * Have word in line. Get or create its node and stick it at
1385 * the end of the targets list
1386 */
1387 if ((specType == Not) && (*line != '\0')) {
1388 if (Dir_HasWildcards(line)) {
1389 /*
1390 * Targets are to be sought only in the current directory,
1391 * so create an empty path for the thing. Note we need to
1392 * use Dir_Destroy in the destruction of the path as the
1393 * Dir module could have added a directory to the path...
1394 */
1395 Lst emptyPath = Lst_Init(FALSE);
1396
1397 Dir_Expand(line, emptyPath, curTargs);
1398
1399 Lst_Destroy(emptyPath, Dir_Destroy);
1400 } else {
1401 /*
1402 * No wildcards, but we want to avoid code duplication,
1403 * so create a list with the word on it.
1404 */
1405 (void)Lst_AtEnd(curTargs, line);
1406 }
1407
1408 while(!Lst_IsEmpty(curTargs)) {
1409 char *targName = (char *)Lst_DeQueue(curTargs);
1410
1411 if (!Suff_IsTransform (targName)) {
1412 gn = Targ_FindNode(targName, TARG_CREATE);
1413 } else {
1414 gn = Suff_AddTransform(targName);
1415 }
1416 if (doing_depend)
1417 ParseMark(gn);
1418
1419 (void)Lst_AtEnd(targets, gn);
1420 }
1421 } else if (specType == ExPath && *line != '.' && *line != '\0') {
1422 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line);
1423 }
1424
1425 *cp = savec;
1426 /*
1427 * If it is a special type and not .PATH, it's the only target we
1428 * allow on this line...
1429 */
1430 if (specType != Not && specType != ExPath) {
1431 Boolean warning = FALSE;
1432
1433 while (*cp && (ParseIsEscaped(lstart, cp) ||
1434 ((*cp != '!') && (*cp != ':')))) {
1435 if (ParseIsEscaped(lstart, cp) ||
1436 (*cp != ' ' && *cp != '\t')) {
1437 warning = TRUE;
1438 }
1439 cp++;
1440 }
1441 if (warning) {
1442 Parse_Error(PARSE_WARNING, "Extra target ignored");
1443 }
1444 } else {
1445 while (*cp && isspace ((unsigned char)*cp)) {
1446 cp++;
1447 }
1448 }
1449 line = cp;
1450 } while (*line && (ParseIsEscaped(lstart, line) ||
1451 ((*line != '!') && (*line != ':'))));
1452
1453 /*
1454 * Don't need the list of target names anymore...
1455 */
1456 Lst_Destroy(curTargs, NULL);
1457 curTargs = NULL;
1458
1459 if (!Lst_IsEmpty(targets)) {
1460 switch(specType) {
1461 default:
1462 Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored");
1463 break;
1464 case Default:
1465 case Stale:
1466 case Begin:
1467 case End:
1468 case dotError:
1469 case Interrupt:
1470 /*
1471 * These four create nodes on which to hang commands, so
1472 * targets shouldn't be empty...
1473 */
1474 case Not:
1475 /*
1476 * Nothing special here -- targets can be empty if it wants.
1477 */
1478 break;
1479 }
1480 }
1481
1482 /*
1483 * Have now parsed all the target names. Must parse the operator next. The
1484 * result is left in op .
1485 */
1486 if (*cp == '!') {
1487 op = OP_FORCE;
1488 } else if (*cp == ':') {
1489 if (cp[1] == ':') {
1490 op = OP_DOUBLEDEP;
1491 cp++;
1492 } else {
1493 op = OP_DEPENDS;
1494 }
1495 } else {
1496 Parse_Error(PARSE_FATAL, lstart[0] == '.' ? "Unknown directive"
1497 : "Missing dependency operator");
1498 goto out;
1499 }
1500
1501 cp++; /* Advance beyond operator */
1502
1503 Lst_ForEach(targets, ParseDoOp, &op);
1504
1505 /*
1506 * Get to the first source
1507 */
1508 while (*cp && isspace ((unsigned char)*cp)) {
1509 cp++;
1510 }
1511 line = cp;
1512
1513 /*
1514 * Several special targets take different actions if present with no
1515 * sources:
1516 * a .SUFFIXES line with no sources clears out all old suffixes
1517 * a .PRECIOUS line makes all targets precious
1518 * a .IGNORE line ignores errors for all targets
1519 * a .SILENT line creates silence when making all targets
1520 * a .PATH removes all directories from the search path(s).
1521 */
1522 if (!*line) {
1523 switch (specType) {
1524 case Suffixes:
1525 Suff_ClearSuffixes();
1526 break;
1527 case Precious:
1528 allPrecious = TRUE;
1529 break;
1530 case Ignore:
1531 ignoreErrors = TRUE;
1532 break;
1533 case Silent:
1534 beSilent = TRUE;
1535 break;
1536 case ExPath:
1537 Lst_ForEach(paths, ParseClearPath, NULL);
1538 Dir_SetPATH();
1539 break;
1540 #ifdef POSIX
1541 case Posix:
1542 Var_Set("%POSIX", "1003.2", VAR_GLOBAL, 0);
1543 break;
1544 #endif
1545 default:
1546 break;
1547 }
1548 } else if (specType == MFlags) {
1549 /*
1550 * Call on functions in main.c to deal with these arguments and
1551 * set the initial character to a null-character so the loop to
1552 * get sources won't get anything
1553 */
1554 Main_ParseArgLine(line);
1555 *line = '\0';
1556 } else if (specType == ExShell) {
1557 if (Job_ParseShell(line) != SUCCESS) {
1558 Parse_Error(PARSE_FATAL, "improper shell specification");
1559 goto out;
1560 }
1561 *line = '\0';
1562 } else if ((specType == NotParallel) || (specType == SingleShell)) {
1563 *line = '\0';
1564 }
1565
1566 /*
1567 * NOW GO FOR THE SOURCES
1568 */
1569 if ((specType == Suffixes) || (specType == ExPath) ||
1570 (specType == Includes) || (specType == Libs) ||
1571 (specType == Null) || (specType == ExObjdir))
1572 {
1573 while (*line) {
1574 /*
1575 * If the target was one that doesn't take files as its sources
1576 * but takes something like suffixes, we take each
1577 * space-separated word on the line as a something and deal
1578 * with it accordingly.
1579 *
1580 * If the target was .SUFFIXES, we take each source as a
1581 * suffix and add it to the list of suffixes maintained by the
1582 * Suff module.
1583 *
1584 * If the target was a .PATH, we add the source as a directory
1585 * to search on the search path.
1586 *
1587 * If it was .INCLUDES, the source is taken to be the suffix of
1588 * files which will be #included and whose search path should
1589 * be present in the .INCLUDES variable.
1590 *
1591 * If it was .LIBS, the source is taken to be the suffix of
1592 * files which are considered libraries and whose search path
1593 * should be present in the .LIBS variable.
1594 *
1595 * If it was .NULL, the source is the suffix to use when a file
1596 * has no valid suffix.
1597 *
1598 * If it was .OBJDIR, the source is a new definition for .OBJDIR,
1599 * and will cause make to do a new chdir to that path.
1600 */
1601 while (*cp && !isspace ((unsigned char)*cp)) {
1602 cp++;
1603 }
1604 savec = *cp;
1605 *cp = '\0';
1606 switch (specType) {
1607 case Suffixes:
1608 Suff_AddSuffix(line, &mainNode);
1609 break;
1610 case ExPath:
1611 Lst_ForEach(paths, ParseAddDir, line);
1612 break;
1613 case Includes:
1614 Suff_AddInclude(line);
1615 break;
1616 case Libs:
1617 Suff_AddLib(line);
1618 break;
1619 case Null:
1620 Suff_SetNull(line);
1621 break;
1622 case ExObjdir:
1623 Main_SetObjdir(line);
1624 break;
1625 default:
1626 break;
1627 }
1628 *cp = savec;
1629 if (savec != '\0') {
1630 cp++;
1631 }
1632 while (*cp && isspace ((unsigned char)*cp)) {
1633 cp++;
1634 }
1635 line = cp;
1636 }
1637 if (paths) {
1638 Lst_Destroy(paths, NULL);
1639 }
1640 if (specType == ExPath)
1641 Dir_SetPATH();
1642 } else {
1643 while (*line) {
1644 /*
1645 * The targets take real sources, so we must beware of archive
1646 * specifications (i.e. things with left parentheses in them)
1647 * and handle them accordingly.
1648 */
1649 for (; *cp && !isspace ((unsigned char)*cp); cp++) {
1650 if ((*cp == LPAREN) && (cp > line) && (cp[-1] != '$')) {
1651 /*
1652 * Only stop for a left parenthesis if it isn't at the
1653 * start of a word (that'll be for variable changes
1654 * later) and isn't preceded by a dollar sign (a dynamic
1655 * source).
1656 */
1657 break;
1658 }
1659 }
1660
1661 if (*cp == LPAREN) {
1662 sources = Lst_Init(FALSE);
1663 if (Arch_ParseArchive(&line, sources, VAR_CMD) != SUCCESS) {
1664 Parse_Error(PARSE_FATAL,
1665 "Error in source archive spec \"%s\"", line);
1666 goto out;
1667 }
1668
1669 while (!Lst_IsEmpty (sources)) {
1670 gn = (GNode *)Lst_DeQueue(sources);
1671 ParseDoSrc(tOp, gn->name);
1672 }
1673 Lst_Destroy(sources, NULL);
1674 cp = line;
1675 } else {
1676 if (*cp) {
1677 *cp = '\0';
1678 cp += 1;
1679 }
1680
1681 ParseDoSrc(tOp, line);
1682 }
1683 while (*cp && isspace ((unsigned char)*cp)) {
1684 cp++;
1685 }
1686 line = cp;
1687 }
1688 }
1689
1690 if (mainNode == NULL) {
1691 /*
1692 * If we have yet to decide on a main target to make, in the
1693 * absence of any user input, we want the first target on
1694 * the first dependency line that is actually a real target
1695 * (i.e. isn't a .USE or .EXEC rule) to be made.
1696 */
1697 Lst_ForEach(targets, ParseFindMain, NULL);
1698 }
1699
1700 out:
1701 if (curTargs)
1702 Lst_Destroy(curTargs, NULL);
1703 }
1704
1705 /*-
1706 *---------------------------------------------------------------------
1707 * Parse_IsVar --
1708 * Return TRUE if the passed line is a variable assignment. A variable
1709 * assignment consists of a single word followed by optional whitespace
1710 * followed by either a += or an = operator.
1711 * This function is used both by the Parse_File function and main when
1712 * parsing the command-line arguments.
1713 *
1714 * Input:
1715 * line the line to check
1716 *
1717 * Results:
1718 * TRUE if it is. FALSE if it ain't
1719 *
1720 * Side Effects:
1721 * none
1722 *---------------------------------------------------------------------
1723 */
1724 Boolean
Parse_IsVar(char * line)1725 Parse_IsVar(char *line)
1726 {
1727 Boolean wasSpace = FALSE; /* set TRUE if found a space */
1728 char ch;
1729 int level = 0;
1730 #define ISEQOPERATOR(c) \
1731 (((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!'))
1732
1733 /*
1734 * Skip to variable name
1735 */
1736 for (;(*line == ' ') || (*line == '\t'); line++)
1737 continue;
1738
1739 /* Scan for one of the assignment operators outside a variable expansion */
1740 while ((ch = *line++) != 0) {
1741 if (ch == '(' || ch == '{') {
1742 level++;
1743 continue;
1744 }
1745 if (ch == ')' || ch == '}') {
1746 level--;
1747 continue;
1748 }
1749 if (level != 0)
1750 continue;
1751 while (ch == ' ' || ch == '\t') {
1752 ch = *line++;
1753 wasSpace = TRUE;
1754 }
1755 #ifdef SUNSHCMD
1756 if (ch == ':' && strncmp(line, "sh", 2) == 0) {
1757 line += 2;
1758 continue;
1759 }
1760 #endif
1761 if (ch == '=')
1762 return TRUE;
1763 if (*line == '=' && ISEQOPERATOR(ch))
1764 return TRUE;
1765 if (wasSpace)
1766 return FALSE;
1767 }
1768
1769 return FALSE;
1770 }
1771
1772 /*-
1773 *---------------------------------------------------------------------
1774 * Parse_DoVar --
1775 * Take the variable assignment in the passed line and do it in the
1776 * global context.
1777 *
1778 * Note: There is a lexical ambiguity with assignment modifier characters
1779 * in variable names. This routine interprets the character before the =
1780 * as a modifier. Therefore, an assignment like
1781 * C++=/usr/bin/CC
1782 * is interpreted as "C+ +=" instead of "C++ =".
1783 *
1784 * Input:
1785 * line a line guaranteed to be a variable assignment.
1786 * This reduces error checks
1787 * ctxt Context in which to do the assignment
1788 *
1789 * Results:
1790 * none
1791 *
1792 * Side Effects:
1793 * the variable structure of the given variable name is altered in the
1794 * global context.
1795 *---------------------------------------------------------------------
1796 */
1797 void
Parse_DoVar(char * line,GNode * ctxt)1798 Parse_DoVar(char *line, GNode *ctxt)
1799 {
1800 char *cp; /* pointer into line */
1801 enum {
1802 VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL
1803 } type; /* Type of assignment */
1804 char *opc; /* ptr to operator character to
1805 * null-terminate the variable name */
1806 Boolean freeCp = FALSE; /* TRUE if cp needs to be freed,
1807 * i.e. if any variable expansion was
1808 * performed */
1809 int depth;
1810
1811 /*
1812 * Skip to variable name
1813 */
1814 while ((*line == ' ') || (*line == '\t')) {
1815 line++;
1816 }
1817
1818 /*
1819 * Skip to operator character, nulling out whitespace as we go
1820 * XXX Rather than counting () and {} we should look for $ and
1821 * then expand the variable.
1822 */
1823 for (depth = 0, cp = line + 1; depth != 0 || *cp != '='; cp++) {
1824 if (*cp == '(' || *cp == '{') {
1825 depth++;
1826 continue;
1827 }
1828 if (*cp == ')' || *cp == '}') {
1829 depth--;
1830 continue;
1831 }
1832 if (depth == 0 && isspace ((unsigned char)*cp)) {
1833 *cp = '\0';
1834 }
1835 }
1836 opc = cp-1; /* operator is the previous character */
1837 *cp++ = '\0'; /* nuke the = */
1838
1839 /*
1840 * Check operator type
1841 */
1842 switch (*opc) {
1843 case '+':
1844 type = VAR_APPEND;
1845 *opc = '\0';
1846 break;
1847
1848 case '?':
1849 /*
1850 * If the variable already has a value, we don't do anything.
1851 */
1852 *opc = '\0';
1853 if (Var_Exists(line, ctxt)) {
1854 return;
1855 } else {
1856 type = VAR_NORMAL;
1857 }
1858 break;
1859
1860 case ':':
1861 type = VAR_SUBST;
1862 *opc = '\0';
1863 break;
1864
1865 case '!':
1866 type = VAR_SHELL;
1867 *opc = '\0';
1868 break;
1869
1870 default:
1871 #ifdef SUNSHCMD
1872 while (opc > line && *opc != ':')
1873 opc--;
1874
1875 if (strncmp(opc, ":sh", 3) == 0) {
1876 type = VAR_SHELL;
1877 *opc = '\0';
1878 break;
1879 }
1880 #endif
1881 type = VAR_NORMAL;
1882 break;
1883 }
1884
1885 while (isspace ((unsigned char)*cp)) {
1886 cp++;
1887 }
1888
1889 if (type == VAR_APPEND) {
1890 Var_Append(line, cp, ctxt);
1891 } else if (type == VAR_SUBST) {
1892 /*
1893 * Allow variables in the old value to be undefined, but leave their
1894 * invocation alone -- this is done by forcing oldVars to be false.
1895 * XXX: This can cause recursive variables, but that's not hard to do,
1896 * and this allows someone to do something like
1897 *
1898 * CFLAGS = $(.INCLUDES)
1899 * CFLAGS := -I.. $(CFLAGS)
1900 *
1901 * And not get an error.
1902 */
1903 Boolean oldOldVars = oldVars;
1904
1905 oldVars = FALSE;
1906
1907 /*
1908 * make sure that we set the variable the first time to nothing
1909 * so that it gets substituted!
1910 */
1911 if (!Var_Exists(line, ctxt))
1912 Var_Set(line, "", ctxt, 0);
1913
1914 cp = Var_Subst(NULL, cp, ctxt, FALSE);
1915 oldVars = oldOldVars;
1916 freeCp = TRUE;
1917
1918 Var_Set(line, cp, ctxt, 0);
1919 } else if (type == VAR_SHELL) {
1920 char *res;
1921 const char *error;
1922
1923 if (strchr(cp, '$') != NULL) {
1924 /*
1925 * There's a dollar sign in the command, so perform variable
1926 * expansion on the whole thing. The resulting string will need
1927 * freeing when we're done, so set freeCmd to TRUE.
1928 */
1929 cp = Var_Subst(NULL, cp, VAR_CMD, TRUE);
1930 freeCp = TRUE;
1931 }
1932
1933 res = Cmd_Exec(cp, &error);
1934 Var_Set(line, res, ctxt, 0);
1935 free(res);
1936
1937 if (error)
1938 Parse_Error(PARSE_WARNING, error, cp);
1939 } else {
1940 /*
1941 * Normal assignment -- just do it.
1942 */
1943 Var_Set(line, cp, ctxt, 0);
1944 }
1945 if (strcmp(line, MAKEOVERRIDES) == 0)
1946 Main_ExportMAKEFLAGS(FALSE); /* re-export MAKEFLAGS */
1947 else if (strcmp(line, ".CURDIR") == 0) {
1948 /*
1949 * Somone is being (too?) clever...
1950 * Let's pretend they know what they are doing and
1951 * re-initialize the 'cur' Path.
1952 */
1953 Dir_InitCur(cp);
1954 Dir_SetPATH();
1955 } else if (strcmp(line, MAKE_JOB_PREFIX) == 0) {
1956 Job_SetPrefix();
1957 } else if (strcmp(line, MAKE_EXPORTED) == 0) {
1958 Var_Export(cp, 0);
1959 }
1960 if (freeCp)
1961 free(cp);
1962 }
1963
1964
1965 /*-
1966 * ParseAddCmd --
1967 * Lst_ForEach function to add a command line to all targets
1968 *
1969 * Input:
1970 * gnp the node to which the command is to be added
1971 * cmd the command to add
1972 *
1973 * Results:
1974 * Always 0
1975 *
1976 * Side Effects:
1977 * A new element is added to the commands list of the node.
1978 */
1979 static int
ParseAddCmd(void * gnp,void * cmd)1980 ParseAddCmd(void *gnp, void *cmd)
1981 {
1982 GNode *gn = (GNode *)gnp;
1983
1984 /* Add to last (ie current) cohort for :: targets */
1985 if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts))
1986 gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts));
1987
1988 /* if target already supplied, ignore commands */
1989 if (!(gn->type & OP_HAS_COMMANDS)) {
1990 (void)Lst_AtEnd(gn->commands, cmd);
1991 ParseMark(gn);
1992 } else {
1993 #ifdef notyet
1994 /* XXX: We cannot do this until we fix the tree */
1995 (void)Lst_AtEnd(gn->commands, cmd);
1996 Parse_Error(PARSE_WARNING,
1997 "overriding commands for target \"%s\"; "
1998 "previous commands defined at %s: %d ignored",
1999 gn->name, gn->fname, gn->lineno);
2000 #else
2001 Parse_Error(PARSE_WARNING,
2002 "duplicate script for target \"%s\" ignored",
2003 gn->name);
2004 ParseErrorInternal(gn->fname, gn->lineno, PARSE_WARNING,
2005 "using previous script for \"%s\" defined here",
2006 gn->name);
2007 #endif
2008 }
2009 return(0);
2010 }
2011
2012 /*-
2013 *-----------------------------------------------------------------------
2014 * ParseHasCommands --
2015 * Callback procedure for Parse_File when destroying the list of
2016 * targets on the last dependency line. Marks a target as already
2017 * having commands if it does, to keep from having shell commands
2018 * on multiple dependency lines.
2019 *
2020 * Input:
2021 * gnp Node to examine
2022 *
2023 * Results:
2024 * None
2025 *
2026 * Side Effects:
2027 * OP_HAS_COMMANDS may be set for the target.
2028 *
2029 *-----------------------------------------------------------------------
2030 */
2031 static void
ParseHasCommands(void * gnp)2032 ParseHasCommands(void *gnp)
2033 {
2034 GNode *gn = (GNode *)gnp;
2035 if (!Lst_IsEmpty(gn->commands)) {
2036 gn->type |= OP_HAS_COMMANDS;
2037 }
2038 }
2039
2040 /*-
2041 *-----------------------------------------------------------------------
2042 * Parse_AddIncludeDir --
2043 * Add a directory to the path searched for included makefiles
2044 * bracketed by double-quotes. Used by functions in main.c
2045 *
2046 * Input:
2047 * dir The name of the directory to add
2048 *
2049 * Results:
2050 * None.
2051 *
2052 * Side Effects:
2053 * The directory is appended to the list.
2054 *
2055 *-----------------------------------------------------------------------
2056 */
2057 void
Parse_AddIncludeDir(char * dir)2058 Parse_AddIncludeDir(char *dir)
2059 {
2060 (void)Dir_AddDir(parseIncPath, dir);
2061 }
2062
2063 /*-
2064 *---------------------------------------------------------------------
2065 * ParseDoInclude --
2066 * Push to another file.
2067 *
2068 * The input is the line minus the `.'. A file spec is a string
2069 * enclosed in <> or "". The former is looked for only in sysIncPath.
2070 * The latter in . and the directories specified by -I command line
2071 * options
2072 *
2073 * Results:
2074 * None
2075 *
2076 * Side Effects:
2077 * A structure is added to the includes Lst and readProc, lineno,
2078 * fname and curFILE are altered for the new file
2079 *---------------------------------------------------------------------
2080 */
2081
2082 static void
Parse_include_file(char * file,Boolean isSystem,int silent)2083 Parse_include_file(char *file, Boolean isSystem, int silent)
2084 {
2085 struct loadedfile *lf;
2086 char *fullname; /* full pathname of file */
2087 char *newName;
2088 char *prefEnd, *incdir;
2089 int fd;
2090 int i;
2091
2092 /*
2093 * Now we know the file's name and its search path, we attempt to
2094 * find the durn thing. A return of NULL indicates the file don't
2095 * exist.
2096 */
2097 fullname = file[0] == '/' ? bmake_strdup(file) : NULL;
2098
2099 if (fullname == NULL && !isSystem) {
2100 /*
2101 * Include files contained in double-quotes are first searched for
2102 * relative to the including file's location. We don't want to
2103 * cd there, of course, so we just tack on the old file's
2104 * leading path components and call Dir_FindFile to see if
2105 * we can locate the beast.
2106 */
2107
2108 incdir = bmake_strdup(curFile->fname);
2109 prefEnd = strrchr(incdir, '/');
2110 if (prefEnd != NULL) {
2111 *prefEnd = '\0';
2112 /* Now do lexical processing of leading "../" on the filename */
2113 for (i = 0; strncmp(file + i, "../", 3) == 0; i += 3) {
2114 prefEnd = strrchr(incdir + 1, '/');
2115 if (prefEnd == NULL || strcmp(prefEnd, "/..") == 0)
2116 break;
2117 *prefEnd = '\0';
2118 }
2119 newName = str_concat(incdir, file + i, STR_ADDSLASH);
2120 fullname = Dir_FindFile(newName, parseIncPath);
2121 if (fullname == NULL)
2122 fullname = Dir_FindFile(newName, dirSearchPath);
2123 free(newName);
2124 }
2125 free(incdir);
2126
2127 if (fullname == NULL) {
2128 /*
2129 * Makefile wasn't found in same directory as included makefile.
2130 * Search for it first on the -I search path,
2131 * then on the .PATH search path, if not found in a -I directory.
2132 * If we have a suffix specific path we should use that.
2133 */
2134 char *suff;
2135 Lst suffPath = NULL;
2136
2137 if ((suff = strrchr(file, '.'))) {
2138 suffPath = Suff_GetPath(suff);
2139 if (suffPath != NULL) {
2140 fullname = Dir_FindFile(file, suffPath);
2141 }
2142 }
2143 if (fullname == NULL) {
2144 fullname = Dir_FindFile(file, parseIncPath);
2145 if (fullname == NULL) {
2146 fullname = Dir_FindFile(file, dirSearchPath);
2147 }
2148 }
2149 }
2150 }
2151
2152 /* Looking for a system file or file still not found */
2153 if (fullname == NULL) {
2154 /*
2155 * Look for it on the system path
2156 */
2157 fullname = Dir_FindFile(file,
2158 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath);
2159 }
2160
2161 if (fullname == NULL) {
2162 if (!silent)
2163 Parse_Error(PARSE_FATAL, "Could not find %s", file);
2164 return;
2165 }
2166
2167 /* Actually open the file... */
2168 fd = open(fullname, O_RDONLY);
2169 if (fd == -1) {
2170 if (!silent)
2171 Parse_Error(PARSE_FATAL, "Cannot open %s", fullname);
2172 free(fullname);
2173 return;
2174 }
2175
2176 /* load it */
2177 lf = loadfile(fullname, fd);
2178
2179 ParseSetIncludedFile();
2180 /* Start reading from this file next */
2181 Parse_SetInput(fullname, 0, -1, loadedfile_nextbuf, lf);
2182 curFile->lf = lf;
2183 }
2184
2185 static void
ParseDoInclude(char * line)2186 ParseDoInclude(char *line)
2187 {
2188 char endc; /* the character which ends the file spec */
2189 char *cp; /* current position in file spec */
2190 int silent = (*line != 'i') ? 1 : 0;
2191 char *file = &line[7 + silent];
2192
2193 /* Skip to delimiter character so we know where to look */
2194 while (*file == ' ' || *file == '\t')
2195 file++;
2196
2197 if (*file != '"' && *file != '<') {
2198 Parse_Error(PARSE_FATAL,
2199 ".include filename must be delimited by '\"' or '<'");
2200 return;
2201 }
2202
2203 /*
2204 * Set the search path on which to find the include file based on the
2205 * characters which bracket its name. Angle-brackets imply it's
2206 * a system Makefile while double-quotes imply it's a user makefile
2207 */
2208 if (*file == '<') {
2209 endc = '>';
2210 } else {
2211 endc = '"';
2212 }
2213
2214 /* Skip to matching delimiter */
2215 for (cp = ++file; *cp && *cp != endc; cp++)
2216 continue;
2217
2218 if (*cp != endc) {
2219 Parse_Error(PARSE_FATAL,
2220 "Unclosed %cinclude filename. '%c' expected",
2221 '.', endc);
2222 return;
2223 }
2224 *cp = '\0';
2225
2226 /*
2227 * Substitute for any variables in the file name before trying to
2228 * find the thing.
2229 */
2230 file = Var_Subst(NULL, file, VAR_CMD, FALSE);
2231
2232 Parse_include_file(file, endc == '>', silent);
2233 free(file);
2234 }
2235
2236
2237 /*-
2238 *---------------------------------------------------------------------
2239 * ParseSetIncludedFile --
2240 * Set the .INCLUDEDFROMFILE variable to the contents of .PARSEFILE
2241 * and the .INCLUDEDFROMDIR variable to the contents of .PARSEDIR
2242 *
2243 * Results:
2244 * None
2245 *
2246 * Side Effects:
2247 * The .INCLUDEDFROMFILE variable is overwritten by the contents
2248 * of .PARSEFILE and the .INCLUDEDFROMDIR variable is overwriten
2249 * by the contents of .PARSEDIR
2250 *---------------------------------------------------------------------
2251 */
2252 static void
ParseSetIncludedFile(void)2253 ParseSetIncludedFile(void)
2254 {
2255 char *pf, *fp = NULL;
2256 char *pd, *dp = NULL;
2257
2258 pf = Var_Value(".PARSEFILE", VAR_GLOBAL, &fp);
2259 Var_Set(".INCLUDEDFROMFILE", pf, VAR_GLOBAL, 0);
2260 pd = Var_Value(".PARSEDIR", VAR_GLOBAL, &dp);
2261 Var_Set(".INCLUDEDFROMDIR", pd, VAR_GLOBAL, 0);
2262
2263 if (DEBUG(PARSE))
2264 fprintf(debug_file, "%s: ${.INCLUDEDFROMDIR} = `%s' "
2265 "${.INCLUDEDFROMFILE} = `%s'\n", __func__, pd, pf);
2266
2267 if (fp)
2268 free(fp);
2269 if (dp)
2270 free(dp);
2271 }
2272 /*-
2273 *---------------------------------------------------------------------
2274 * ParseSetParseFile --
2275 * Set the .PARSEDIR and .PARSEFILE variables to the dirname and
2276 * basename of the given filename
2277 *
2278 * Results:
2279 * None
2280 *
2281 * Side Effects:
2282 * The .PARSEDIR and .PARSEFILE variables are overwritten by the
2283 * dirname and basename of the given filename.
2284 *---------------------------------------------------------------------
2285 */
2286 static void
ParseSetParseFile(const char * filename)2287 ParseSetParseFile(const char *filename)
2288 {
2289 char *slash, *dirname;
2290 const char *pd, *pf;
2291 int len;
2292
2293 slash = strrchr(filename, '/');
2294 if (slash == NULL) {
2295 Var_Set(".PARSEDIR", pd = curdir, VAR_GLOBAL, 0);
2296 Var_Set(".PARSEFILE", pf = filename, VAR_GLOBAL, 0);
2297 dirname= NULL;
2298 } else {
2299 len = slash - filename;
2300 dirname = bmake_malloc(len + 1);
2301 memcpy(dirname, filename, len);
2302 dirname[len] = '\0';
2303 Var_Set(".PARSEDIR", pd = dirname, VAR_GLOBAL, 0);
2304 Var_Set(".PARSEFILE", pf = slash + 1, VAR_GLOBAL, 0);
2305 }
2306 if (DEBUG(PARSE))
2307 fprintf(debug_file, "%s: ${.PARSEDIR} = `%s' ${.PARSEFILE} = `%s'\n",
2308 __func__, pd, pf);
2309 free(dirname);
2310 }
2311
2312 /*
2313 * Track the makefiles we read - so makefiles can
2314 * set dependencies on them.
2315 * Avoid adding anything more than once.
2316 */
2317
2318 static void
ParseTrackInput(const char * name)2319 ParseTrackInput(const char *name)
2320 {
2321 char *old;
2322 char *fp = NULL;
2323 size_t name_len = strlen(name);
2324
2325 old = Var_Value(MAKE_MAKEFILES, VAR_GLOBAL, &fp);
2326 if (old) {
2327 /* does it contain name? */
2328 for (; old != NULL; old = strchr(old, ' ')) {
2329 if (*old == ' ')
2330 old++;
2331 if (memcmp(old, name, name_len) == 0
2332 && (old[name_len] == 0 || old[name_len] == ' '))
2333 goto cleanup;
2334 }
2335 }
2336 Var_Append (MAKE_MAKEFILES, name, VAR_GLOBAL);
2337 cleanup:
2338 if (fp) {
2339 free(fp);
2340 }
2341 }
2342
2343
2344 /*-
2345 *---------------------------------------------------------------------
2346 * Parse_setInput --
2347 * Start Parsing from the given source
2348 *
2349 * Results:
2350 * None
2351 *
2352 * Side Effects:
2353 * A structure is added to the includes Lst and readProc, lineno,
2354 * fname and curFile are altered for the new file
2355 *---------------------------------------------------------------------
2356 */
2357 void
Parse_SetInput(const char * name,int line,int fd,char * (* nextbuf)(void *,size_t *),void * arg)2358 Parse_SetInput(const char *name, int line, int fd,
2359 char *(*nextbuf)(void *, size_t *), void *arg)
2360 {
2361 char *buf;
2362 size_t len;
2363
2364 if (name == NULL)
2365 name = curFile->fname;
2366 else
2367 ParseTrackInput(name);
2368
2369 if (DEBUG(PARSE))
2370 fprintf(debug_file, "%s: file %s, line %d, fd %d, nextbuf %p, arg %p\n",
2371 __func__, name, line, fd, nextbuf, arg);
2372
2373 if (fd == -1 && nextbuf == NULL)
2374 /* sanity */
2375 return;
2376
2377 if (curFile != NULL)
2378 /* Save exiting file info */
2379 Lst_AtFront(includes, curFile);
2380
2381 /* Allocate and fill in new structure */
2382 curFile = bmake_malloc(sizeof *curFile);
2383
2384 /*
2385 * Once the previous state has been saved, we can get down to reading
2386 * the new file. We set up the name of the file to be the absolute
2387 * name of the include file so error messages refer to the right
2388 * place.
2389 */
2390 curFile->fname = bmake_strdup(name);
2391 curFile->lineno = line;
2392 curFile->first_lineno = line;
2393 curFile->nextbuf = nextbuf;
2394 curFile->nextbuf_arg = arg;
2395 curFile->lf = NULL;
2396
2397 assert(nextbuf != NULL);
2398
2399 /* Get first block of input data */
2400 buf = curFile->nextbuf(curFile->nextbuf_arg, &len);
2401 if (buf == NULL) {
2402 /* Was all a waste of time ... */
2403 if (curFile->fname)
2404 free(curFile->fname);
2405 free(curFile);
2406 return;
2407 }
2408 curFile->P_str = buf;
2409 curFile->P_ptr = buf;
2410 curFile->P_end = buf+len;
2411
2412 curFile->cond_depth = Cond_save_depth();
2413 ParseSetParseFile(name);
2414 }
2415
2416 #ifdef SYSVINCLUDE
2417 /*-
2418 *---------------------------------------------------------------------
2419 * ParseTraditionalInclude --
2420 * Push to another file.
2421 *
2422 * The input is the current line. The file name(s) are
2423 * following the "include".
2424 *
2425 * Results:
2426 * None
2427 *
2428 * Side Effects:
2429 * A structure is added to the includes Lst and readProc, lineno,
2430 * fname and curFILE are altered for the new file
2431 *---------------------------------------------------------------------
2432 */
2433 static void
ParseTraditionalInclude(char * line)2434 ParseTraditionalInclude(char *line)
2435 {
2436 char *cp; /* current position in file spec */
2437 int done = 0;
2438 int silent = (line[0] != 'i') ? 1 : 0;
2439 char *file = &line[silent + 7];
2440 char *all_files;
2441
2442 if (DEBUG(PARSE)) {
2443 fprintf(debug_file, "%s: %s\n", __func__, file);
2444 }
2445
2446 /*
2447 * Skip over whitespace
2448 */
2449 while (isspace((unsigned char)*file))
2450 file++;
2451
2452 /*
2453 * Substitute for any variables in the file name before trying to
2454 * find the thing.
2455 */
2456 all_files = Var_Subst(NULL, file, VAR_CMD, FALSE);
2457
2458 if (*file == '\0') {
2459 Parse_Error(PARSE_FATAL,
2460 "Filename missing from \"include\"");
2461 return;
2462 }
2463
2464 for (file = all_files; !done; file = cp + 1) {
2465 /* Skip to end of line or next whitespace */
2466 for (cp = file; *cp && !isspace((unsigned char) *cp); cp++)
2467 continue;
2468
2469 if (*cp)
2470 *cp = '\0';
2471 else
2472 done = 1;
2473
2474 Parse_include_file(file, FALSE, silent);
2475 }
2476 free(all_files);
2477 }
2478 #endif
2479
2480 #ifdef GMAKEEXPORT
2481 /*-
2482 *---------------------------------------------------------------------
2483 * ParseGmakeExport --
2484 * Parse export <variable>=<value>
2485 *
2486 * And set the environment with it.
2487 *
2488 * Results:
2489 * None
2490 *
2491 * Side Effects:
2492 * None
2493 *---------------------------------------------------------------------
2494 */
2495 static void
ParseGmakeExport(char * line)2496 ParseGmakeExport(char *line)
2497 {
2498 char *variable = &line[6];
2499 char *value;
2500
2501 if (DEBUG(PARSE)) {
2502 fprintf(debug_file, "%s: %s\n", __func__, variable);
2503 }
2504
2505 /*
2506 * Skip over whitespace
2507 */
2508 while (isspace((unsigned char)*variable))
2509 variable++;
2510
2511 for (value = variable; *value && *value != '='; value++)
2512 continue;
2513
2514 if (*value != '=') {
2515 Parse_Error(PARSE_FATAL,
2516 "Variable/Value missing from \"export\"");
2517 return;
2518 }
2519 *value++ = '\0'; /* terminate variable */
2520
2521 /*
2522 * Expand the value before putting it in the environment.
2523 */
2524 value = Var_Subst(NULL, value, VAR_CMD, FALSE);
2525 setenv(variable, value, 1);
2526 }
2527 #endif
2528
2529 /*-
2530 *---------------------------------------------------------------------
2531 * ParseEOF --
2532 * Called when EOF is reached in the current file. If we were reading
2533 * an include file, the includes stack is popped and things set up
2534 * to go back to reading the previous file at the previous location.
2535 *
2536 * Results:
2537 * CONTINUE if there's more to do. DONE if not.
2538 *
2539 * Side Effects:
2540 * The old curFILE, is closed. The includes list is shortened.
2541 * lineno, curFILE, and fname are changed if CONTINUE is returned.
2542 *---------------------------------------------------------------------
2543 */
2544 static int
ParseEOF(void)2545 ParseEOF(void)
2546 {
2547 char *ptr;
2548 size_t len;
2549
2550 assert(curFile->nextbuf != NULL);
2551
2552 /* get next input buffer, if any */
2553 ptr = curFile->nextbuf(curFile->nextbuf_arg, &len);
2554 curFile->P_ptr = ptr;
2555 curFile->P_str = ptr;
2556 curFile->P_end = ptr + len;
2557 curFile->lineno = curFile->first_lineno;
2558 if (ptr != NULL) {
2559 /* Iterate again */
2560 return CONTINUE;
2561 }
2562
2563 /* Ensure the makefile (or loop) didn't have mismatched conditionals */
2564 Cond_restore_depth(curFile->cond_depth);
2565
2566 if (curFile->lf != NULL) {
2567 loadedfile_destroy(curFile->lf);
2568 curFile->lf = NULL;
2569 }
2570
2571 /* Dispose of curFile info */
2572 /* Leak curFile->fname because all the gnodes have pointers to it */
2573 free(curFile->P_str);
2574 free(curFile);
2575
2576 curFile = Lst_DeQueue(includes);
2577
2578 if (curFile == NULL) {
2579 /* We've run out of input */
2580 Var_Delete(".PARSEDIR", VAR_GLOBAL);
2581 Var_Delete(".PARSEFILE", VAR_GLOBAL);
2582 Var_Delete(".INCLUDEDFROMDIR", VAR_GLOBAL);
2583 Var_Delete(".INCLUDEDFROMFILE", VAR_GLOBAL);
2584 return DONE;
2585 }
2586
2587 if (DEBUG(PARSE))
2588 fprintf(debug_file, "ParseEOF: returning to file %s, line %d\n",
2589 curFile->fname, curFile->lineno);
2590
2591 /* Restore the PARSEDIR/PARSEFILE variables */
2592 ParseSetParseFile(curFile->fname);
2593 return (CONTINUE);
2594 }
2595
2596 #define PARSE_RAW 1
2597 #define PARSE_SKIP 2
2598
2599 static char *
ParseGetLine(int flags,int * length)2600 ParseGetLine(int flags, int *length)
2601 {
2602 IFile *cf = curFile;
2603 char *ptr;
2604 char ch;
2605 char *line;
2606 char *line_end;
2607 char *escaped;
2608 char *comment;
2609 char *tp;
2610
2611 /* Loop through blank lines and comment lines */
2612 for (;;) {
2613 cf->lineno++;
2614 line = cf->P_ptr;
2615 ptr = line;
2616 line_end = line;
2617 escaped = NULL;
2618 comment = NULL;
2619 for (;;) {
2620 if (cf->P_end != NULL && ptr == cf->P_end) {
2621 /* end of buffer */
2622 ch = 0;
2623 break;
2624 }
2625 ch = *ptr;
2626 if (ch == 0 || (ch == '\\' && ptr[1] == 0)) {
2627 if (cf->P_end == NULL)
2628 /* End of string (aka for loop) data */
2629 break;
2630 /* see if there is more we can parse */
2631 while (ptr++ < cf->P_end) {
2632 if ((ch = *ptr) == '\n') {
2633 if (ptr > line && ptr[-1] == '\\')
2634 continue;
2635 Parse_Error(PARSE_WARNING,
2636 "Zero byte read from file, skipping rest of line.");
2637 break;
2638 }
2639 }
2640 if (cf->nextbuf != NULL) {
2641 /*
2642 * End of this buffer; return EOF and outer logic
2643 * will get the next one. (eww)
2644 */
2645 break;
2646 }
2647 Parse_Error(PARSE_FATAL, "Zero byte read from file");
2648 return NULL;
2649 }
2650
2651 if (ch == '\\') {
2652 /* Don't treat next character as special, remember first one */
2653 if (escaped == NULL)
2654 escaped = ptr;
2655 if (ptr[1] == '\n')
2656 cf->lineno++;
2657 ptr += 2;
2658 line_end = ptr;
2659 continue;
2660 }
2661 if (ch == '#' && comment == NULL) {
2662 /* Remember first '#' for comment stripping */
2663 /* Unless previous char was '[', as in modifier :[#] */
2664 if (!(ptr > line && ptr[-1] == '['))
2665 comment = line_end;
2666 }
2667 ptr++;
2668 if (ch == '\n')
2669 break;
2670 if (!isspace((unsigned char)ch))
2671 /* We are not interested in trailing whitespace */
2672 line_end = ptr;
2673 }
2674
2675 /* Save next 'to be processed' location */
2676 cf->P_ptr = ptr;
2677
2678 /* Check we have a non-comment, non-blank line */
2679 if (line_end == line || comment == line) {
2680 if (ch == 0)
2681 /* At end of file */
2682 return NULL;
2683 /* Parse another line */
2684 continue;
2685 }
2686
2687 /* We now have a line of data */
2688 *line_end = 0;
2689
2690 if (flags & PARSE_RAW) {
2691 /* Leave '\' (etc) in line buffer (eg 'for' lines) */
2692 *length = line_end - line;
2693 return line;
2694 }
2695
2696 if (flags & PARSE_SKIP) {
2697 /* Completely ignore non-directives */
2698 if (line[0] != '.')
2699 continue;
2700 /* We could do more of the .else/.elif/.endif checks here */
2701 }
2702 break;
2703 }
2704
2705 /* Brutally ignore anything after a non-escaped '#' in non-commands */
2706 if (comment != NULL && line[0] != '\t') {
2707 line_end = comment;
2708 *line_end = 0;
2709 }
2710
2711 /* If we didn't see a '\\' then the in-situ data is fine */
2712 if (escaped == NULL) {
2713 *length = line_end - line;
2714 return line;
2715 }
2716
2717 /* Remove escapes from '\n' and '#' */
2718 tp = ptr = escaped;
2719 escaped = line;
2720 for (; ; *tp++ = ch) {
2721 ch = *ptr++;
2722 if (ch != '\\') {
2723 if (ch == 0)
2724 break;
2725 continue;
2726 }
2727
2728 ch = *ptr++;
2729 if (ch == 0) {
2730 /* Delete '\\' at end of buffer */
2731 tp--;
2732 break;
2733 }
2734
2735 if (ch == '#' && line[0] != '\t')
2736 /* Delete '\\' from before '#' on non-command lines */
2737 continue;
2738
2739 if (ch != '\n') {
2740 /* Leave '\\' in buffer for later */
2741 *tp++ = '\\';
2742 /* Make sure we don't delete an escaped ' ' from the line end */
2743 escaped = tp + 1;
2744 continue;
2745 }
2746
2747 /* Escaped '\n' replace following whitespace with a single ' ' */
2748 while (ptr[0] == ' ' || ptr[0] == '\t')
2749 ptr++;
2750 ch = ' ';
2751 }
2752
2753 /* Delete any trailing spaces - eg from empty continuations */
2754 while (tp > escaped && isspace((unsigned char)tp[-1]))
2755 tp--;
2756
2757 *tp = 0;
2758 *length = tp - line;
2759 return line;
2760 }
2761
2762 /*-
2763 *---------------------------------------------------------------------
2764 * ParseReadLine --
2765 * Read an entire line from the input file. Called only by Parse_File.
2766 *
2767 * Results:
2768 * A line w/o its newline
2769 *
2770 * Side Effects:
2771 * Only those associated with reading a character
2772 *---------------------------------------------------------------------
2773 */
2774 static char *
ParseReadLine(void)2775 ParseReadLine(void)
2776 {
2777 char *line; /* Result */
2778 int lineLength; /* Length of result */
2779 int lineno; /* Saved line # */
2780 int rval;
2781
2782 for (;;) {
2783 line = ParseGetLine(0, &lineLength);
2784 if (line == NULL)
2785 return NULL;
2786
2787 if (line[0] != '.')
2788 return line;
2789
2790 /*
2791 * The line might be a conditional. Ask the conditional module
2792 * about it and act accordingly
2793 */
2794 switch (Cond_Eval(line)) {
2795 case COND_SKIP:
2796 /* Skip to next conditional that evaluates to COND_PARSE. */
2797 do {
2798 line = ParseGetLine(PARSE_SKIP, &lineLength);
2799 } while (line && Cond_Eval(line) != COND_PARSE);
2800 if (line == NULL)
2801 break;
2802 continue;
2803 case COND_PARSE:
2804 continue;
2805 case COND_INVALID: /* Not a conditional line */
2806 /* Check for .for loops */
2807 rval = For_Eval(line);
2808 if (rval == 0)
2809 /* Not a .for line */
2810 break;
2811 if (rval < 0)
2812 /* Syntax error - error printed, ignore line */
2813 continue;
2814 /* Start of a .for loop */
2815 lineno = curFile->lineno;
2816 /* Accumulate loop lines until matching .endfor */
2817 do {
2818 line = ParseGetLine(PARSE_RAW, &lineLength);
2819 if (line == NULL) {
2820 Parse_Error(PARSE_FATAL,
2821 "Unexpected end of file in for loop.");
2822 break;
2823 }
2824 } while (For_Accum(line));
2825 /* Stash each iteration as a new 'input file' */
2826 For_Run(lineno);
2827 /* Read next line from for-loop buffer */
2828 continue;
2829 }
2830 return (line);
2831 }
2832 }
2833
2834 /*-
2835 *-----------------------------------------------------------------------
2836 * ParseFinishLine --
2837 * Handle the end of a dependency group.
2838 *
2839 * Results:
2840 * Nothing.
2841 *
2842 * Side Effects:
2843 * inLine set FALSE. 'targets' list destroyed.
2844 *
2845 *-----------------------------------------------------------------------
2846 */
2847 static void
ParseFinishLine(void)2848 ParseFinishLine(void)
2849 {
2850 if (inLine) {
2851 Lst_ForEach(targets, Suff_EndTransform, NULL);
2852 Lst_Destroy(targets, ParseHasCommands);
2853 targets = NULL;
2854 inLine = FALSE;
2855 }
2856 }
2857
2858
2859 /*-
2860 *---------------------------------------------------------------------
2861 * Parse_File --
2862 * Parse a file into its component parts, incorporating it into the
2863 * current dependency graph. This is the main function and controls
2864 * almost every other function in this module
2865 *
2866 * Input:
2867 * name the name of the file being read
2868 * fd Open file to makefile to parse
2869 *
2870 * Results:
2871 * None
2872 *
2873 * Side Effects:
2874 * closes fd.
2875 * Loads. Nodes are added to the list of all targets, nodes and links
2876 * are added to the dependency graph. etc. etc. etc.
2877 *---------------------------------------------------------------------
2878 */
2879 void
Parse_File(const char * name,int fd)2880 Parse_File(const char *name, int fd)
2881 {
2882 char *cp; /* pointer into the line */
2883 char *line; /* the line we're working on */
2884 struct loadedfile *lf;
2885
2886 lf = loadfile(name, fd);
2887
2888 inLine = FALSE;
2889 fatals = 0;
2890
2891 if (name == NULL) {
2892 name = "(stdin)";
2893 }
2894
2895 Parse_SetInput(name, 0, -1, loadedfile_nextbuf, lf);
2896 curFile->lf = lf;
2897
2898 do {
2899 for (; (line = ParseReadLine()) != NULL; ) {
2900 if (DEBUG(PARSE))
2901 fprintf(debug_file, "ParseReadLine (%d): '%s'\n",
2902 curFile->lineno, line);
2903 if (*line == '.') {
2904 /*
2905 * Lines that begin with the special character may be
2906 * include or undef directives.
2907 * On the other hand they can be suffix rules (.c.o: ...)
2908 * or just dependencies for filenames that start '.'.
2909 */
2910 for (cp = line + 1; isspace((unsigned char)*cp); cp++) {
2911 continue;
2912 }
2913 if (strncmp(cp, "include", 7) == 0 ||
2914 ((cp[0] == 's' || cp[0] == '-') &&
2915 strncmp(&cp[1], "include", 7) == 0)) {
2916 ParseDoInclude(cp);
2917 continue;
2918 }
2919 if (strncmp(cp, "undef", 5) == 0) {
2920 char *cp2;
2921 for (cp += 5; isspace((unsigned char) *cp); cp++)
2922 continue;
2923 for (cp2 = cp; !isspace((unsigned char) *cp2) &&
2924 (*cp2 != '\0'); cp2++)
2925 continue;
2926 *cp2 = '\0';
2927 Var_Delete(cp, VAR_GLOBAL);
2928 continue;
2929 } else if (strncmp(cp, "export", 6) == 0) {
2930 for (cp += 6; isspace((unsigned char) *cp); cp++)
2931 continue;
2932 Var_Export(cp, 1);
2933 continue;
2934 } else if (strncmp(cp, "unexport", 8) == 0) {
2935 Var_UnExport(cp);
2936 continue;
2937 } else if (strncmp(cp, "info", 4) == 0 ||
2938 strncmp(cp, "error", 5) == 0 ||
2939 strncmp(cp, "warning", 7) == 0) {
2940 if (ParseMessage(cp))
2941 continue;
2942 }
2943 }
2944
2945 if (*line == '\t') {
2946 /*
2947 * If a line starts with a tab, it can only hope to be
2948 * a creation command.
2949 */
2950 cp = line + 1;
2951 shellCommand:
2952 for (; isspace ((unsigned char)*cp); cp++) {
2953 continue;
2954 }
2955 if (*cp) {
2956 if (!inLine)
2957 Parse_Error(PARSE_FATAL,
2958 "Unassociated shell command \"%s\"",
2959 cp);
2960 /*
2961 * So long as it's not a blank line and we're actually
2962 * in a dependency spec, add the command to the list of
2963 * commands of all targets in the dependency spec
2964 */
2965 if (targets) {
2966 cp = bmake_strdup(cp);
2967 Lst_ForEach(targets, ParseAddCmd, cp);
2968 #ifdef CLEANUP
2969 Lst_AtEnd(targCmds, cp);
2970 #endif
2971 }
2972 }
2973 continue;
2974 }
2975
2976 #ifdef SYSVINCLUDE
2977 if (((strncmp(line, "include", 7) == 0 &&
2978 isspace((unsigned char) line[7])) ||
2979 ((line[0] == 's' || line[0] == '-') &&
2980 strncmp(&line[1], "include", 7) == 0 &&
2981 isspace((unsigned char) line[8]))) &&
2982 strchr(line, ':') == NULL) {
2983 /*
2984 * It's an S3/S5-style "include".
2985 */
2986 ParseTraditionalInclude(line);
2987 continue;
2988 }
2989 #endif
2990 #ifdef GMAKEEXPORT
2991 if (strncmp(line, "export", 6) == 0 &&
2992 isspace((unsigned char) line[6]) &&
2993 strchr(line, ':') == NULL) {
2994 /*
2995 * It's a Gmake "export".
2996 */
2997 ParseGmakeExport(line);
2998 continue;
2999 }
3000 #endif
3001 if (Parse_IsVar(line)) {
3002 ParseFinishLine();
3003 Parse_DoVar(line, VAR_GLOBAL);
3004 continue;
3005 }
3006
3007 #ifndef POSIX
3008 /*
3009 * To make life easier on novices, if the line is indented we
3010 * first make sure the line has a dependency operator in it.
3011 * If it doesn't have an operator and we're in a dependency
3012 * line's script, we assume it's actually a shell command
3013 * and add it to the current list of targets.
3014 */
3015 cp = line;
3016 if (isspace((unsigned char) line[0])) {
3017 while ((*cp != '\0') && isspace((unsigned char) *cp))
3018 cp++;
3019 while (*cp && (ParseIsEscaped(line, cp) ||
3020 (*cp != ':') && (*cp != '!'))) {
3021 cp++;
3022 }
3023 if (*cp == '\0') {
3024 if (inLine) {
3025 Parse_Error(PARSE_WARNING,
3026 "Shell command needs a leading tab");
3027 goto shellCommand;
3028 }
3029 }
3030 }
3031 #endif
3032 ParseFinishLine();
3033
3034 /*
3035 * For some reason - probably to make the parser impossible -
3036 * a ';' can be used to separate commands from dependencies.
3037 * Attempt to avoid ';' inside substitution patterns.
3038 */
3039 {
3040 int level = 0;
3041
3042 for (cp = line; *cp != 0; cp++) {
3043 if (*cp == '\\' && cp[1] != 0) {
3044 cp++;
3045 continue;
3046 }
3047 if (*cp == '$' &&
3048 (cp[1] == '(' || cp[1] == '{')) {
3049 level++;
3050 continue;
3051 }
3052 if (level > 0) {
3053 if (*cp == ')' || *cp == '}') {
3054 level--;
3055 continue;
3056 }
3057 } else if (*cp == ';') {
3058 break;
3059 }
3060 }
3061 }
3062 if (*cp != 0)
3063 /* Terminate the dependency list at the ';' */
3064 *cp++ = 0;
3065 else
3066 cp = NULL;
3067
3068 /*
3069 * We now know it's a dependency line so it needs to have all
3070 * variables expanded before being parsed. Tell the variable
3071 * module to complain if some variable is undefined...
3072 */
3073 line = Var_Subst(NULL, line, VAR_CMD, TRUE);
3074
3075 /*
3076 * Need a non-circular list for the target nodes
3077 */
3078 if (targets)
3079 Lst_Destroy(targets, NULL);
3080
3081 targets = Lst_Init(FALSE);
3082 inLine = TRUE;
3083
3084 ParseDoDependency(line);
3085 free(line);
3086
3087 /* If there were commands after a ';', add them now */
3088 if (cp != NULL) {
3089 goto shellCommand;
3090 }
3091 }
3092 /*
3093 * Reached EOF, but it may be just EOF of an include file...
3094 */
3095 } while (ParseEOF() == CONTINUE);
3096
3097 if (fatals) {
3098 (void)fflush(stdout);
3099 (void)fprintf(stderr,
3100 "%s: Fatal errors encountered -- cannot continue",
3101 progname);
3102 PrintOnError(NULL, NULL);
3103 exit(1);
3104 }
3105 }
3106
3107 /*-
3108 *---------------------------------------------------------------------
3109 * Parse_Init --
3110 * initialize the parsing module
3111 *
3112 * Results:
3113 * none
3114 *
3115 * Side Effects:
3116 * the parseIncPath list is initialized...
3117 *---------------------------------------------------------------------
3118 */
3119 void
Parse_Init(void)3120 Parse_Init(void)
3121 {
3122 mainNode = NULL;
3123 parseIncPath = Lst_Init(FALSE);
3124 sysIncPath = Lst_Init(FALSE);
3125 defIncPath = Lst_Init(FALSE);
3126 includes = Lst_Init(FALSE);
3127 #ifdef CLEANUP
3128 targCmds = Lst_Init(FALSE);
3129 #endif
3130 }
3131
3132 void
Parse_End(void)3133 Parse_End(void)
3134 {
3135 #ifdef CLEANUP
3136 Lst_Destroy(targCmds, (FreeProc *)free);
3137 if (targets)
3138 Lst_Destroy(targets, NULL);
3139 Lst_Destroy(defIncPath, Dir_Destroy);
3140 Lst_Destroy(sysIncPath, Dir_Destroy);
3141 Lst_Destroy(parseIncPath, Dir_Destroy);
3142 Lst_Destroy(includes, NULL); /* Should be empty now */
3143 #endif
3144 }
3145
3146
3147 /*-
3148 *-----------------------------------------------------------------------
3149 * Parse_MainName --
3150 * Return a Lst of the main target to create for main()'s sake. If
3151 * no such target exists, we Punt with an obnoxious error message.
3152 *
3153 * Results:
3154 * A Lst of the single node to create.
3155 *
3156 * Side Effects:
3157 * None.
3158 *
3159 *-----------------------------------------------------------------------
3160 */
3161 Lst
Parse_MainName(void)3162 Parse_MainName(void)
3163 {
3164 Lst mainList; /* result list */
3165
3166 mainList = Lst_Init(FALSE);
3167
3168 if (mainNode == NULL) {
3169 Punt("no target to make.");
3170 /*NOTREACHED*/
3171 } else if (mainNode->type & OP_DOUBLEDEP) {
3172 (void)Lst_AtEnd(mainList, mainNode);
3173 Lst_Concat(mainList, mainNode->cohorts, LST_CONCNEW);
3174 }
3175 else
3176 (void)Lst_AtEnd(mainList, mainNode);
3177 Var_Append(".TARGETS", mainNode->name, VAR_GLOBAL);
3178 return (mainList);
3179 }
3180
3181 /*-
3182 *-----------------------------------------------------------------------
3183 * ParseMark --
3184 * Add the filename and lineno to the GNode so that we remember
3185 * where it was first defined.
3186 *
3187 * Side Effects:
3188 * None.
3189 *
3190 *-----------------------------------------------------------------------
3191 */
3192 static void
ParseMark(GNode * gn)3193 ParseMark(GNode *gn)
3194 {
3195 gn->fname = curFile->fname;
3196 gn->lineno = curFile->lineno;
3197 }
3198