2 * Copyright (c) 1988, 1989, 1990, 1993
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1989 by Berkeley Softworks
7 * This code is derived from software contributed to Berkeley by
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * @(#)parse.c 8.3 (Berkeley) 3/19/94
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
46 * Functions to parse a makefile.
48 * Most important structures are kept in Lsts. Directories for
49 * the #include "..." function are kept in the 'parseIncPath' Lst, while
50 * those for the #include <...> are kept in the 'sysIncPath' Lst. The
51 * targets currently being defined are kept in the 'targets' Lst.
55 * Parse_File Function used to parse a makefile. It must
56 * be given the name of the file, which should
57 * already have been opened, and a function
58 * to call to read a character from the file.
60 * Parse_IsVar Returns TRUE if the given line is a
61 * variable assignment. Used by MainParseArgs
62 * to determine if an argument is a target
63 * or a variable assignment. Used internally
64 * for pretty much the same thing...
66 * Parse_Error Function called when an error occurs in
67 * parsing. Used by the variable and
68 * conditional modules.
70 * Parse_MainName Returns a Lst of the main target to create.
88 #include "hash_tables.h"
92 #include "pathnames.h"
101 * These values are returned by ParsePopInput to tell Parse_File whether to
102 * CONTINUE parsing, i.e. it had only reached the end of an include file,
108 /* targets we're working on */
109 static Lst targets = Lst_Initializer(targets);
111 /* true if currently in a dependency line or its commands */
112 static Boolean inLine;
114 static int fatals = 0;
117 * The main target to create. This is the first target on the
118 * first dependency line in the first makefile.
120 static GNode *mainNode;
123 * Definitions for handling #include specifications
126 char *fname; /* name of previous file */
127 int lineno; /* saved line number */
128 FILE *F; /* the open stream */
129 char *str; /* the string when parsing a string */
130 char *ptr; /* the current pointer when parsing a string */
131 TAILQ_ENTRY(IFile) link;/* stack the files */
134 /* stack of IFiles generated by * #includes */
135 static TAILQ_HEAD(, IFile) includes = TAILQ_HEAD_INITIALIZER(includes);
137 /* access current file */
138 #define CURFILE (TAILQ_FIRST(&includes))
140 /* list of directories for "..." includes */
141 struct Path parseIncPath = TAILQ_HEAD_INITIALIZER(parseIncPath);
143 /* list of directories for <...> includes */
144 struct Path sysIncPath = TAILQ_HEAD_INITIALIZER(sysIncPath);
147 * specType contains the SPECial TYPE of the current target. It is
148 * Not if the target is unspecial. If it *is* special, however, the children
149 * are linked as children of the parent but not vice versa. This variable is
150 * set in ParseDoDependency
154 Default, /* .DEFAULT */
156 ExportVar, /* .EXPORTVAR */
157 Ignore, /* .IGNORE */
158 Includes, /* .INCLUDES */
159 Interrupt, /* .INTERRUPT */
161 MFlags, /* .MFLAGS or .MAKEFLAGS */
162 Main, /* .MAIN and we don't have anyth. user-spec. to make */
163 Not, /* Not special */
164 NotParallel, /* .NOTPARALELL */
167 Parallel, /* .PARALLEL */
171 MakefileDeps, /* .MAKEFILEDEPS */
172 Precious, /* .PRECIOUS */
173 ExShell, /* .SHELL */
174 Silent, /* .SILENT */
175 SingleShell, /* .SINGLESHELL */
176 Suffixes, /* .SUFFIXES */
179 Attribute /* Generic attribute */
182 static ParseSpecial specType;
186 * Predecessor node for handling .ORDER. Initialized to NULL when .ORDER
187 * seen, then set to each successive source on the line.
189 static GNode *predecessor;
192 * The parseKeywords table is searched using binary search when deciding
193 * if a target or source is special. The 'spec' field is the ParseSpecial
194 * type of the keyword ("Not" if the keyword isn't special as a target) while
195 * the 'op' field is the operator to apply to the list of targets if the
196 * keyword is used as a source ("0" if the keyword isn't special as a source)
198 static const struct keyword {
199 const char *name; /* Name of keyword */
200 ParseSpecial spec; /* Type when used as a target */
201 int op; /* Operator when used as a source */
202 } parseKeywords[] = {
203 /* KEYWORD-START-TAG */
204 { ".BEGIN", Begin, 0 },
205 { ".DEFAULT", Default, 0 },
207 { ".EXEC", Attribute, OP_EXEC },
208 { ".EXPORTVAR", ExportVar, 0 },
209 { ".IGNORE", Ignore, OP_IGNORE },
210 { ".INCLUDES", Includes, 0 },
211 { ".INTERRUPT", Interrupt, 0 },
212 { ".INVISIBLE", Attribute, OP_INVISIBLE },
213 { ".JOIN", Attribute, OP_JOIN },
214 { ".LIBS", Libs, 0 },
215 { ".MAIN", Main, 0 },
216 { ".MAKE", Attribute, OP_MAKE },
217 { ".MAKEFILEDEPS", MakefileDeps, 0 },
218 { ".MAKEFLAGS", MFlags, 0 },
219 { ".MFLAGS", MFlags, 0 },
220 { ".NOTMAIN", Attribute, OP_NOTMAIN },
221 { ".NOTPARALLEL", NotParallel, 0 },
222 { ".NO_PARALLEL", NotParallel, 0 },
223 { ".NULL", Null, 0 },
224 { ".OPTIONAL", Attribute, OP_OPTIONAL },
225 { ".ORDER", Order, 0 },
226 { ".PARALLEL", Parallel, 0 },
227 { ".PATH", ExPath, 0 },
228 { ".PHONY", Phony, OP_PHONY },
229 { ".POSIX", Posix, 0 },
230 { ".PRECIOUS", Precious, OP_PRECIOUS },
231 { ".RECURSIVE", Attribute, OP_MAKE },
232 { ".SHELL", ExShell, 0 },
233 { ".SILENT", Silent, OP_SILENT },
234 { ".SINGLESHELL", SingleShell, 0 },
235 { ".SUFFIXES", Suffixes, 0 },
236 { ".USE", Attribute, OP_USE },
237 { ".WAIT", Wait, 0 },
238 { ".WARN", Warn, 0 },
239 /* KEYWORD-END-TAG */
241 #define NKEYWORDS (sizeof(parseKeywords) / sizeof(parseKeywords[0]))
243 static void parse_include(char *, int, int);
244 static void parse_sinclude(char *, int, int);
245 static void parse_message(char *, int, int);
246 static void parse_undef(char *, int, int);
247 static void parse_for(char *, int, int);
248 static void parse_endfor(char *, int, int);
250 static const struct directive {
253 Boolean skip_flag; /* execute even when skipped */
254 void (*func)(char *, int, int);
256 /* DIRECTIVES-START-TAG */
257 { "elif", COND_ELIF, TRUE, Cond_If },
258 { "elifdef", COND_ELIFDEF, TRUE, Cond_If },
259 { "elifmake", COND_ELIFMAKE, TRUE, Cond_If },
260 { "elifndef", COND_ELIFNDEF, TRUE, Cond_If },
261 { "elifnmake", COND_ELIFNMAKE, TRUE, Cond_If },
262 { "else", COND_ELSE, TRUE, Cond_Else },
263 { "endfor", 0, FALSE, parse_endfor },
264 { "endif", COND_ENDIF, TRUE, Cond_Endif },
265 { "error", 1, FALSE, parse_message },
266 { "for", 0, FALSE, parse_for },
267 { "if", COND_IF, TRUE, Cond_If },
268 { "ifdef", COND_IFDEF, TRUE, Cond_If },
269 { "ifmake", COND_IFMAKE, TRUE, Cond_If },
270 { "ifndef", COND_IFNDEF, TRUE, Cond_If },
271 { "ifnmake", COND_IFNMAKE, TRUE, Cond_If },
272 { "include", 0, FALSE, parse_include },
273 { "sinclude", 0, FALSE, parse_sinclude },
274 { "undef", 0, FALSE, parse_undef },
275 { "warning", 0, FALSE, parse_message },
276 /* DIRECTIVES-END-TAG */
278 #define NDIRECTS (sizeof(directives) / sizeof(directives[0]))
282 * Look in the table of keywords for one matching the given string.
285 * The pointer to keyword table entry or NULL.
287 static const struct keyword *
288 ParseFindKeyword(const char *str)
292 kw = keyword_hash(str, strlen(str));
293 if (kw < 0 || kw >= (int)NKEYWORDS ||
294 strcmp(str, parseKeywords[kw].name) != 0)
296 return (&parseKeywords[kw]);
301 * Error message abort function for parsing. Prints out the context
302 * of the error (line number and file) as well as the message with
303 * two optional arguments.
309 * "fatals" is incremented if the level is PARSE_FATAL.
313 Parse_Error(int type, const char *fmt, ...)
319 fprintf(stderr, "\"%s\", line %d: ",
320 CURFILE->fname, CURFILE->lineno);
321 if (type == PARSE_WARNING)
322 fprintf(stderr, "warning: ");
323 vfprintf(stderr, fmt, ap);
325 fprintf(stderr, "\n");
327 if (type == PARSE_FATAL)
334 * Push a new input source onto the input stack. If ptr is NULL
335 * the fullname is used to fopen the file. If it is not NULL,
336 * ptr is assumed to point to the string to be parsed. If opening the
337 * file fails, the fullname is freed.
340 ParsePushInput(char *fullname, FILE *fp, char *ptr, int lineno)
344 nf = emalloc(sizeof(*nf));
345 nf->fname = fullname;
349 /* the input source is a file */
350 if ((nf->F = fp) == NULL) {
351 nf->F = fopen(fullname, "r");
353 Parse_Error(PARSE_FATAL, "Cannot open %s",
360 nf->str = nf->ptr = NULL;
361 Var_Append(".MAKEFILE_LIST", fullname, VAR_GLOBAL);
363 nf->str = nf->ptr = ptr;
366 TAILQ_INSERT_HEAD(&includes, nf, link);
371 * Called when EOF is reached in the current file. If we were reading
372 * an include file, the includes stack is popped and things set up
373 * to go back to reading the previous file at the previous location.
376 * CONTINUE if there's more to do. DONE if not.
379 * The old curFile.F is closed. The includes list is shortened.
380 * curFile.lineno, curFile.F, and curFile.fname are changed if
381 * CONTINUE is returned.
386 struct IFile *ifile; /* the state on the top of the includes stack */
388 assert(!TAILQ_EMPTY(&includes));
390 ifile = TAILQ_FIRST(&includes);
391 TAILQ_REMOVE(&includes, ifile, link);
394 if (ifile->F != NULL) {
396 Var_Append(".MAKEFILE_LIST", "..", VAR_GLOBAL);
398 if (ifile->str != NULL) {
403 return (TAILQ_EMPTY(&includes) ? DONE : CONTINUE);
408 * Parse the .WARN pseudo-target.
411 parse_warn(char *line)
416 brk_string(&aa, line, TRUE);
418 for (i = 1; i < aa.argc; i++)
419 Main_ParseWarn(aa.argv[i], 0);
423 *---------------------------------------------------------------------
425 * Link the parent nodes to their new child. Used by
426 * ParseDoDependency. If the specType isn't 'Not', the parent
427 * isn't linked as a parent of the child.
430 * New elements are added to the parents lists of cgn and the
431 * children list of cgn. the unmade field of pgn is updated
432 * to reflect the additional child.
433 *---------------------------------------------------------------------
436 ParseLinkSrc(Lst *parents, GNode *cgn)
441 LST_FOREACH(ln, parents) {
443 if (Lst_Member(&pgn->children, cgn) == NULL) {
444 Lst_AtEnd(&pgn->children, cgn);
445 if (specType == Not) {
446 Lst_AtEnd(&cgn->parents, pgn);
454 *---------------------------------------------------------------------
456 * Apply the parsed operator to all target nodes. Used in
457 * ParseDoDependency once all targets have been found and their
458 * operator parsed. If the previous and new operators are incompatible,
459 * a major error is taken.
462 * The type field of the node is altered to reflect any new bits in
464 *---------------------------------------------------------------------
473 LST_FOREACH(ln, &targets) {
477 * If the dependency mask of the operator and the node don't
478 * match and the node has actually had an operator applied to
479 * it before, and the operator actually has some dependency
480 * information in it, complain.
482 if ((op & OP_OPMASK) != (gn->type & OP_OPMASK) &&
483 !OP_NOP(gn->type) && !OP_NOP(op)) {
484 Parse_Error(PARSE_FATAL, "Inconsistent operator for %s",
489 if (op == OP_DOUBLEDEP &&
490 (gn->type & OP_OPMASK) == OP_DOUBLEDEP) {
492 * If the node was the object of a :: operator, we need
493 * to create a new instance of it for the children and
494 * commands on this dependency line. The new instance
495 * is placed on the 'cohorts' list of the initial one
496 * (note the initial one is not on its own cohorts list)
497 * and the new instance is linked to all parents of the
500 cohort = Targ_NewGN(gn->name);
503 * Duplicate links to parents so graph traversal is
504 * simple. Perhaps some type bits should be duplicated?
506 * Make the cohort invisible as well to avoid
507 * duplicating it into other variables. True, parents
508 * of this target won't tend to do anything with their
509 * local variables, but better safe than sorry.
511 ParseLinkSrc(&gn->parents, cohort);
512 cohort->type = OP_DOUBLEDEP|OP_INVISIBLE;
513 Lst_AtEnd(&gn->cohorts, cohort);
516 * Replace the node in the targets list with the
519 Lst_Replace(ln, cohort);
523 * We don't want to nuke any previous flags (whatever they were)
524 * so we just OR the new operator into the old
531 *---------------------------------------------------------------------
533 * Given the name of a source, figure out if it is an attribute
534 * and apply it to the targets if it is. Else decide if there is
535 * some attribute which should be applied *to* the source because
536 * of some special target and apply it if so. Otherwise, make the
537 * source be a child of the targets in the list 'targets'
543 * Operator bits may be added to the list of targets or to the source.
544 * The targets may have a new source added to their lists of children.
545 *---------------------------------------------------------------------
548 ParseDoSrc(int tOp, char *src, Lst *allsrc)
551 const struct keyword *kw;
553 if (src[0] == '.' && isupper ((unsigned char)src[1])) {
554 if ((kw = ParseFindKeyword(src)) != NULL) {
559 if (kw->spec == Wait) {
569 * If we have noted the existence of a .MAIN, it means we need
570 * to add the sources of said target to the list of things
571 * to create. The string 'src' is likely to be free, so we
572 * must make a new copy of it. Note that this will only be
573 * invoked if the user didn't specify a target on the command
574 * line. This is to allow #ifmake's to succeed, or something...
576 Lst_AtEnd(&create, estrdup(src));
578 * Add the name to the .TARGETS variable as well, so the user
579 * can employ that, if desired.
581 Var_Append(".TARGETS", src, VAR_GLOBAL);
586 * Create proper predecessor/successor links between the
587 * previous source and the current one.
589 gn = Targ_FindNode(src, TARG_CREATE);
590 if (predecessor != NULL) {
591 Lst_AtEnd(&predecessor->successors, gn);
592 Lst_AtEnd(&gn->preds, predecessor);
595 * The current source now becomes the predecessor for the next
603 * If the source is not an attribute, we need to find/create
604 * a node for it. After that we can apply any operator to it
605 * from a special target or link it to its parents, as
608 * In the case of a source that was the object of a :: operator,
609 * the attribute is applied to all of its instances (as kept in
610 * the 'cohorts' list of the node) or all the cohorts are linked
611 * to all the targets.
613 gn = Targ_FindNode(src, TARG_CREATE);
617 ParseLinkSrc(&targets, gn);
619 if ((gn->type & OP_OPMASK) == OP_DOUBLEDEP) {
623 for (ln = Lst_First(&gn->cohorts); ln != NULL;
625 cohort = Lst_Datum(ln);
629 ParseLinkSrc(&targets, cohort);
637 Lst_AtEnd(allsrc, gn);
643 * Check if GNodes needs to be synchronized.
644 * This has to be when two nodes are on different sides of a
647 LST_FOREACH(ln, allsrc) {
650 if (p->order >= gn->order)
653 * XXX: This can cause loops, and loops can cause
654 * unmade targets, but checking is tedious, and the
655 * debugging output can show the problem
657 Lst_AtEnd(&p->successors, gn);
658 Lst_AtEnd(&gn->preds, p);
665 *---------------------------------------------------------------------
666 * ParseDoDependency --
667 * Parse the dependency line in line.
673 * The nodes of the sources are linked as children to the nodes of the
674 * targets. Some nodes may be created.
676 * We parse a dependency line by first extracting words from the line and
677 * finding nodes in the list of all targets with that name. This is done
678 * until a character is encountered which is an operator character. Currently
679 * these are only ! and :. At this point the operator is parsed and the
680 * pointer into the line advanced until the first source is encountered.
681 * The parsed operator is applied to each node in the 'targets' list,
682 * which is where the nodes found for the targets are kept, by means of
683 * the ParseDoOp function.
684 * The sources are read in much the same way as the targets were except
685 * that now they are expanded using the wildcarding scheme of the C-Shell
686 * and all instances of the resulting words in the list of all targets
687 * are found. Each of the resulting nodes is then linked to each of the
688 * targets as one of its children.
689 * Certain targets are handled specially. These are the ones detailed
690 * by the specType variable.
691 * The storing of transformation rules is also taken care of here.
692 * A target is recognized as a transformation rule by calling
693 * Suff_IsTransform. If it is a transformation rule, its node is gotten
694 * from the suffix module via Suff_AddTransform rather than the standard
695 * Targ_FindNode in the target module.
696 *---------------------------------------------------------------------
699 ParseDoDependency(char *line)
701 char *cp; /* our current position */
702 GNode *gn; /* a general purpose temporary node */
703 int op; /* the operator on the line */
704 char savec; /* a place to save a character */
705 Lst paths; /* Search paths to alter when parsing .PATH targets */
706 int tOp; /* operator from special target */
708 const struct keyword *kw;
718 *cp && !isspace((unsigned char)*cp) && *cp != '(';
722 * Must be a dynamic source (would have been
723 * expanded otherwise), so call the Var module
724 * to parse the puppy so we can safely advance
725 * beyond it...There should be no errors in this
726 * as they would have been discovered in the
727 * initial Var_Subst and we wouldn't be here.
733 result = Var_Parse(cp, VAR_CMD, TRUE,
741 } else if (*cp == '!' || *cp == ':') {
743 * We don't want to end a word on ':' or '!' if
744 * there is a better match later on in the
745 * string (greedy matching).
746 * This allows the user to have targets like:
749 * where "fie::fi:fo" and "foo::bar" are the
750 * targets. In real life this is used for perl5
751 * library man pages where "::" separates an
752 * object from its class. Ie:
753 * "File::Spec::Unix". This behaviour is also
754 * consistent with other versions of make.
758 if (*cp == ':' && *p == ':')
761 /* Found the best match already. */
762 if (*p == '\0' || isspace(*p))
765 p += strcspn(p, "!:");
767 /* No better match later on... */
775 * Archives must be handled specially to make sure the
776 * OP_ARCHV flag is set in their 'type' field, for one
777 * thing, and because things like "archive(file1.o
778 * file2.o file3.o)" are permissible. Arch_ParseArchive
779 * will set 'line' to be the first non-blank after the
780 * archive-spec. It creates/finds nodes for the members
781 * and places them on the given list, returning TRUE
782 * if all went well and FALSE if there was an error in
783 * the specification. On error, line should remain
786 if (!Arch_ParseArchive(&line, &targets, VAR_CMD)) {
787 Parse_Error(PARSE_FATAL,
788 "Error in archive specification: \"%s\"",
800 * Ending a dependency line without an operator is a * Bozo no-no. As a heuristic, this is also often
801 * triggered by undetected conflicts from cvs/rcs
804 if (strncmp(line, "<<<<<<", 6) == 0 ||
805 strncmp(line, "======", 6) == 0 ||
806 strncmp(line, ">>>>>>", 6) == 0) {
807 Parse_Error(PARSE_FATAL, "Makefile appears to "
808 "contain unresolved cvs/rcs/??? merge "
811 Parse_Error(PARSE_FATAL, "Need an operator");
816 * Have a word in line. See if it's a special target and set
817 * specType to match it.
819 if (*line == '.' && isupper((unsigned char)line[1])) {
821 * See if the target is a special target that must have
822 * it or its sources handled specially.
824 if ((kw = ParseFindKeyword(line)) != NULL) {
825 if (specType == ExPath && kw->spec != ExPath) {
826 Parse_Error(PARSE_FATAL,
827 "Mismatched special targets");
835 * Certain special targets have special
837 * .PATH Have to set the dirSearchPath
839 * .MAIN Its sources are only used if
840 * nothing has been specified to
842 * .DEFAULT Need to create a node to hang
843 * commands on, but we don't want
844 * it in the graph, nor do we want
845 * it to be the Main Target, so we
846 * create it, set OP_NOTMAIN and
847 * add it to the list, setting
848 * DEFAULT to the new node for
849 * later use. We claim the node is
850 * A transformation rule to make
851 * life easier later, when we'll
852 * use Make_HandleUse to actually
853 * apply the .DEFAULT commands.
854 * .PHONY The list of targets
857 * .INTERRUPT Are not to be considered the
859 * .NOTPARALLEL Make only one target at a time.
860 * .SINGLESHELL Create a shell for each
862 * .ORDER Must set initial predecessor
867 Lst_AtEnd(&paths, &dirSearchPath);
870 if (!Lst_IsEmpty(&create)) {
877 gn = Targ_FindNode(line, TARG_CREATE);
878 gn->type |= OP_NOTMAIN;
879 Lst_AtEnd(&targets, gn);
882 gn = Targ_NewGN(".DEFAULT");
883 gn->type |= (OP_NOTMAIN|OP_TRANSFORM);
884 Lst_AtEnd(&targets, gn);
900 } else if (strncmp(line, ".PATH", 5) == 0) {
902 * .PATH<suffix> has to be handled specially.
903 * Call on the suffix module to give us a path
909 path = Suff_GetPath(&line[5]);
911 Parse_Error(PARSE_FATAL, "Suffix '%s' "
912 "not defined (yet)", &line[5]);
915 Lst_AtEnd(&paths, path);
920 * Have word in line. Get or create its node and stick it at
921 * the end of the targets list
923 if (specType == Not && *line != '\0') {
925 /* target names to be found and added to targets list */
926 Lst curTargs = Lst_Initializer(curTargs);
928 if (Dir_HasWildcards(line)) {
930 * Targets are to be sought only in the current
931 * directory, so create an empty path for the
932 * thing. Note we need to use Path_Clear in the
933 * destruction of the path as the Dir module
934 * could have added a directory to the path...
936 struct Path emptyPath =
937 TAILQ_HEAD_INITIALIZER(emptyPath);
939 Path_Expand(line, &emptyPath, &curTargs);
940 Path_Clear(&emptyPath);
944 * No wildcards, but we want to avoid code
945 * duplication, so create a list with the word
948 Lst_AtEnd(&curTargs, line);
951 while (!Lst_IsEmpty(&curTargs)) {
952 char *targName = Lst_DeQueue(&curTargs);
954 if (!Suff_IsTransform (targName)) {
955 gn = Targ_FindNode(targName,
958 gn = Suff_AddTransform(targName);
961 Lst_AtEnd(&targets, gn);
963 } else if (specType == ExPath && *line != '.' && *line != '\0'){
964 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored",
970 * If it is a special type and not .PATH, it's the only
971 * target we allow on this line...
973 if (specType != Not && specType != ExPath) {
974 Boolean warnFlag = FALSE;
976 while (*cp != '!' && *cp != ':' && *cp) {
977 if (*cp != ' ' && *cp != '\t') {
983 Parse_Error(PARSE_WARNING,
984 "Extra target ignored");
987 while (*cp && isspace((unsigned char)*cp)) {
992 } while (*line != '!' && *line != ':' && *line);
994 if (!Lst_IsEmpty(&targets)) {
997 Parse_Error(PARSE_WARNING, "Special and mundane "
998 "targets don't mix. Mundane ones ignored");
1005 * These four create nodes on which to hang commands, so
1006 * targets shouldn't be empty...
1010 * Nothing special here -- targets can be empty if it
1018 * Have now parsed all the target names. Must parse the operator next.
1019 * The result is left in op.
1023 } else if (*cp == ':') {
1031 Parse_Error(PARSE_FATAL, "Missing dependency operator");
1035 cp++; /* Advance beyond operator */
1040 * Get to the first source
1042 while (*cp && isspace((unsigned char)*cp)) {
1048 * Several special targets take different actions if present with no
1050 * a .SUFFIXES line with no sources clears out all old suffixes
1051 * a .PRECIOUS line makes all targets precious
1052 * a .IGNORE line ignores errors for all targets
1053 * a .SILENT line creates silence when making all targets
1054 * a .PATH removes all directories from the search path(s).
1059 Suff_ClearSuffixes();
1065 ignoreErrors = TRUE;
1071 LST_FOREACH(ln, &paths)
1072 Path_Clear(Lst_Datum(ln));
1079 Var_Set("%POSIX", "1003.2", VAR_GLOBAL);
1085 } else if (specType == MFlags) {
1087 * Call on functions in main.c to deal with these arguments and
1088 * set the initial character to a null-character so the loop to
1089 * get sources won't get anything
1091 Main_ParseArgLine(line, 0);
1094 } else if (specType == Warn) {
1098 } else if (specType == ExShell) {
1099 if (!Shell_Parse(line)) {
1100 Parse_Error(PARSE_FATAL,
1101 "improper shell specification");
1106 } else if (specType == NotParallel || specType == SingleShell) {
1111 * NOW GO FOR THE SOURCES
1113 if (specType == Suffixes || specType == ExPath ||
1114 specType == Includes || specType == Libs ||
1118 * If the target was one that doesn't take files as its
1119 * sources but takes something like suffixes, we take
1120 * each space-separated word on the line as a something
1121 * and deal with it accordingly.
1123 * If the target was .SUFFIXES, we take each source as
1124 * a suffix and add it to the list of suffixes
1125 * maintained by the Suff module.
1127 * If the target was a .PATH, we add the source as a
1128 * directory to search on the search path.
1130 * If it was .INCLUDES, the source is taken to be the
1131 * suffix of files which will be #included and whose
1132 * search path should be present in the .INCLUDES
1135 * If it was .LIBS, the source is taken to be the
1136 * suffix of files which are considered libraries and
1137 * whose search path should be present in the .LIBS
1140 * If it was .NULL, the source is the suffix to use
1141 * when a file has no valid suffix.
1144 while (*cp && !isspace((unsigned char)*cp)) {
1151 Suff_AddSuffix(line);
1154 LST_FOREACH(ln, &paths)
1155 Path_AddDir(Lst_Datum(ln), line);
1158 Suff_AddInclude(line);
1170 if (savech != '\0') {
1173 while (*cp && isspace((unsigned char)*cp)) {
1178 Lst_Destroy(&paths, NOFREE);
1180 } else if (specType == ExportVar) {
1181 Var_SetEnv(line, VAR_GLOBAL);
1184 /* list of sources in order */
1185 Lst curSrcs = Lst_Initializer(curSrc);
1189 * The targets take real sources, so we must beware of
1190 * archive specifications (i.e. things with left
1191 * parentheses in them) and handle them accordingly.
1193 while (*cp && !isspace((unsigned char)*cp)) {
1194 if (*cp == '(' && cp > line && cp[-1] != '$') {
1196 * Only stop for a left parenthesis if
1197 * it isn't at the start of a word
1198 * (that'll be for variable changes
1199 * later) and isn't preceded by a dollar
1200 * sign (a dynamic source).
1211 /* list of archive source names after exp. */
1212 Lst sources = Lst_Initializer(sources);
1214 if (!Arch_ParseArchive(&line, &sources,
1216 Parse_Error(PARSE_FATAL, "Error in "
1217 "source archive spec \"%s\"", line);
1221 while (!Lst_IsEmpty(&sources)) {
1222 gnp = Lst_DeQueue(&sources);
1223 ParseDoSrc(tOp, gnp->name, &curSrcs);
1232 ParseDoSrc(tOp, line, &curSrcs);
1234 while (*cp && isspace((unsigned char)*cp)) {
1239 Lst_Destroy(&curSrcs, NOFREE);
1242 if (mainNode == NULL) {
1244 * If we have yet to decide on a main target to make, in the
1245 * absence of any user input, we want the first target on
1246 * the first dependency line that is actually a real target
1247 * (i.e. isn't a .USE or .EXEC rule) to be made.
1249 LST_FOREACH(ln, &targets) {
1251 if ((gn->type & (OP_NOTMAIN | OP_USE |
1252 OP_EXEC | OP_TRANSFORM)) == 0) {
1262 *---------------------------------------------------------------------
1264 * Return TRUE if the passed line is a variable assignment. A variable
1265 * assignment consists of a single word followed by optional whitespace
1266 * followed by either a += or an = operator.
1267 * This function is used both by the Parse_File function and main when
1268 * parsing the command-line arguments.
1271 * TRUE if it is. FALSE if it ain't
1275 *---------------------------------------------------------------------
1278 Parse_IsVar(char *line)
1280 Boolean wasSpace = FALSE; /* set TRUE if found a space */
1281 Boolean haveName = FALSE; /* Set TRUE if have a variable name */
1284 #define ISEQOPERATOR(c) \
1285 ((c) == '+' || (c) == ':' || (c) == '?' || (c) == '!')
1288 * Skip to variable name
1290 for (; *line == ' ' || *line == '\t'; line++)
1293 for (; *line != '=' || level != 0; line++) {
1297 * end-of-line -- can't be a variable assignment.
1304 * there can be as much white space as desired so long
1305 * as there is only one word before the operator
1321 if (wasSpace && haveName) {
1322 if (ISEQOPERATOR(*line)) {
1324 * We must have a finished word
1330 * When an = operator [+?!:] is found,
1331 * the next character must be an = or
1332 * it ain't a valid assignment.
1338 * This is a shell command
1340 if (strncmp(line, ":sh", 3) == 0)
1345 * This is the start of another word, so not
1362 *---------------------------------------------------------------------
1364 * Take the variable assignment in the passed line and do it in the
1367 * Note: There is a lexical ambiguity with assignment modifier characters
1368 * in variable names. This routine interprets the character before the =
1369 * as a modifier. Therefore, an assignment like
1371 * is interpreted as "C+ +=" instead of "C++ =".
1377 * the variable structure of the given variable name is altered in the
1379 *---------------------------------------------------------------------
1382 Parse_DoVar(char *line, GNode *ctxt)
1384 char *cp; /* pointer into line */
1390 } type; /* Type of assignment */
1391 char *opc; /* ptr to operator character to
1392 * null-terminate the variable name */
1395 * Skip to variable name
1397 while (*line == ' ' || *line == '\t') {
1402 * Skip to operator character, nulling out whitespace as we go
1404 for (cp = line + 1; *cp != '='; cp++) {
1405 if (isspace((unsigned char)*cp)) {
1409 opc = cp - 1; /* operator is the previous character */
1410 *cp++ = '\0'; /* nuke the = */
1413 * Check operator type
1423 * If the variable already has a value, we don't do anything.
1426 if (Var_Exists(line, ctxt)) {
1445 while (*opc != ':') {
1452 if (strncmp(opc, ":sh", 3) == 0) {
1462 while (isspace((unsigned char)*cp)) {
1466 if (type == VAR_APPEND) {
1467 Var_Append(line, cp, ctxt);
1469 } else if (type == VAR_SUBST) {
1471 * Allow variables in the old value to be undefined, but leave
1472 * their invocation alone -- this is done by forcing oldVars
1474 * XXX: This can cause recursive variables, but that's not
1475 * hard to do, and this allows someone to do something like
1477 * CFLAGS = $(.INCLUDES)
1478 * CFLAGS := -I.. $(CFLAGS)
1480 * And not get an error.
1482 Boolean oldOldVars = oldVars;
1487 * make sure that we set the variable the first time to nothing
1488 * so that it gets substituted!
1490 if (!Var_Exists(line, ctxt))
1491 Var_Set(line, "", ctxt);
1493 cp = Buf_Peel(Var_Subst(cp, ctxt, FALSE));
1495 oldVars = oldOldVars;
1497 Var_Set(line, cp, ctxt);
1500 } else if (type == VAR_SHELL) {
1502 * TRUE if the command needs to be freed, i.e.
1503 * if any variable expansion was performed
1505 Boolean freeCmd = FALSE;
1509 if (strchr(cp, '$') != NULL) {
1511 * There's a dollar sign in the command, so perform
1512 * variable expansion on the whole thing. The
1513 * resulting string will need freeing when we're done,
1514 * so set freeCmd to TRUE.
1516 cp = Buf_Peel(Var_Subst(cp, VAR_CMD, TRUE));
1520 buf = Cmd_Exec(cp, &error);
1521 Var_Set(line, Buf_Data(buf), ctxt);
1522 Buf_Destroy(buf, TRUE);
1525 Parse_Error(PARSE_WARNING, error, cp);
1532 * Normal assignment -- just do it.
1534 Var_Set(line, cp, ctxt);
1539 *-----------------------------------------------------------------------
1540 * ParseHasCommands --
1541 * Callback procedure for Parse_File when destroying the list of
1542 * targets on the last dependency line. Marks a target as already
1543 * having commands if it does, to keep from having shell commands
1544 * on multiple dependency lines.
1550 * OP_HAS_COMMANDS may be set for the target.
1552 *-----------------------------------------------------------------------
1555 ParseHasCommands(void *gnp)
1559 if (!Lst_IsEmpty(&gn->commands)) {
1560 gn->type |= OP_HAS_COMMANDS;
1565 *-----------------------------------------------------------------------
1566 * Parse_AddIncludeDir --
1567 * Add a directory to the path searched for included makefiles
1568 * bracketed by double-quotes. Used by functions in main.c
1574 * The directory is appended to the list.
1576 *-----------------------------------------------------------------------
1579 Parse_AddIncludeDir(char *dir)
1582 Path_AddDir(&parseIncPath, dir);
1586 *---------------------------------------------------------------------
1587 * Parse_FromString --
1588 * Start Parsing from the given string
1594 * A structure is added to the includes Lst and readProc, curFile.lineno,
1595 * curFile.fname and curFile.F are altered for the new file
1596 *---------------------------------------------------------------------
1599 Parse_FromString(char *str, int lineno)
1602 DEBUGF(FOR, ("%s\n---- at line %d\n", str, lineno));
1604 ParsePushInput(estrdup(CURFILE->fname), NULL, str, lineno);
1609 *---------------------------------------------------------------------
1610 * ParseTraditionalInclude --
1611 * Push to another file.
1613 * The input is the line minus the "include". The file name is
1614 * the string following the "include".
1620 * A structure is added to the includes Lst and readProc, curFile.lineno,
1621 * curFile.fname and curFile.F are altered for the new file
1622 *---------------------------------------------------------------------
1625 ParseTraditionalInclude(char *file)
1627 char *fullname; /* full pathname of file */
1628 char *cp; /* current position in file spec */
1631 * Skip over whitespace
1633 while (*file == ' ' || *file == '\t') {
1637 if (*file == '\0') {
1638 Parse_Error(PARSE_FATAL, "Filename missing from \"include\"");
1643 * Skip to end of line or next whitespace
1645 for (cp = file; *cp && *cp != '\n' && *cp != '\t' && *cp != ' '; cp++) {
1652 * Substitute for any variables in the file name before trying to
1655 file = Buf_Peel(Var_Subst(file, VAR_CMD, FALSE));
1658 * Now we know the file's name, we attempt to find the durn thing.
1659 * Search for it first on the -I search path, then on the .PATH
1660 * search path, if not found in a -I directory.
1662 fullname = Path_FindFile(file, &parseIncPath);
1663 if (fullname == NULL) {
1664 fullname = Path_FindFile(file, &dirSearchPath);
1667 if (fullname == NULL) {
1669 * Still haven't found the makefile. Look for it on the system
1670 * path as a last resort.
1672 fullname = Path_FindFile(file, &sysIncPath);
1675 if (fullname == NULL) {
1676 Parse_Error(PARSE_FATAL, "Could not find %s", file);
1677 /* XXXHB free(file) */
1681 /* XXXHB free(file) */
1684 * We set up the name of the file to be the absolute
1685 * name of the include file so error messages refer to the right
1688 ParsePushInput(fullname, NULL, NULL, 0);
1693 *---------------------------------------------------------------------
1695 * Read a character from the current file
1698 * The character that was read
1701 *---------------------------------------------------------------------
1707 if (CURFILE->F != NULL)
1708 return (fgetc(CURFILE->F));
1710 if (CURFILE->str != NULL && *CURFILE->ptr != '\0')
1711 return (*CURFILE->ptr++);
1718 *---------------------------------------------------------------------
1720 * Put back a character to the current file
1726 *---------------------------------------------------------------------
1732 if (CURFILE->F != NULL) {
1733 ungetc(c, CURFILE->F);
1736 if (CURFILE->str != NULL) {
1737 *--(CURFILE->ptr) = c;
1743 * Grab the next line unless it begins with a dot (`.') and we're told to
1744 * ignore such lines.
1747 ParseSkipLine(int skip, int keep_newline)
1753 buf = Buf_Init(MAKE_BSIZE);
1759 while (((c = ParseReadc()) != '\n' || lastc == '\\')
1761 if (skip && c == '#' && lastc != '\\') {
1763 * let a comment be terminated even by an
1764 * escaped \n. This is consistent to comment
1765 * handling in ParseReadLine
1767 while ((c = ParseReadc()) != '\n' && c != EOF)
1773 Buf_AddByte(buf, (Byte)c);
1775 Buf_ReplaceLastByte(buf, (Byte)' ');
1778 while ((c = ParseReadc()) == ' ' || c == '\t')
1785 Buf_AddByte(buf, (Byte)c);
1790 Parse_Error(PARSE_FATAL,
1791 "Unclosed conditional/for loop");
1792 Buf_Destroy(buf, TRUE);
1797 Buf_AddByte(buf, (Byte)'\0');
1798 line = Buf_Data(buf);
1799 } while (skip == 1 && line[0] != '.');
1801 Buf_Destroy(buf, FALSE);
1806 *---------------------------------------------------------------------
1808 * Read an entire line from the input file. Called only by Parse_File.
1809 * To facilitate escaped newlines and what have you, a character is
1810 * buffered in 'lastc', which is '\0' when no characters have been
1811 * read. When we break out of the loop, c holds the terminating
1812 * character and lastc holds a character that should be added to
1813 * the line (unless we don't read anything but a terminator).
1816 * A line w/o its newline
1819 * Only those associated with reading a character
1820 *---------------------------------------------------------------------
1825 Buffer *buf; /* Buffer for current line */
1826 int c; /* the current character */
1827 int lastc; /* The most-recent character */
1828 Boolean semiNL; /* treat semi-colons as newlines */
1829 Boolean ignDepOp; /* TRUE if should ignore dependency operators
1830 * for the purposes of setting semiNL */
1831 Boolean ignComment; /* TRUE if should ignore comments (in a
1833 char *line; /* Result */
1834 char *ep; /* to strip trailing blanks */
1844 * Handle tab at the beginning of the line. A leading tab (shell
1845 * command) forces us to ignore comments and dependency operators and
1846 * treat semi-colons as semi-colons (by leaving semiNL FALSE).
1847 * This also discards completely blank lines.
1852 if (ParsePopInput() == DONE) {
1853 /* End of all inputs - return NULL */
1860 ignComment = ignDepOp = TRUE;
1871 buf = Buf_Init(MAKE_BSIZE);
1873 while (((c = ParseReadc()) != '\n' || lastc == '\\') && c != EOF) {
1878 * Escaped newline: read characters until a
1879 * non-space or an unescaped newline and
1880 * replace them all by a single space. This is
1881 * done by storing the space over the backslash
1882 * and dropping through with the next nonspace.
1883 * If it is a semi-colon and semiNL is TRUE,
1884 * it will be recognized as a newline in the
1885 * code below this...
1889 while ((c = ParseReadc()) == ' ' || c == '\t') {
1892 if (c == EOF || c == '\n') {
1896 * Check for comments, semiNL's, etc. --
1897 * easier than ParseUnreadc(c);
1907 * Semi-colon: Need to see if it should be
1908 * interpreted as a newline
1912 * To make sure the command that may
1913 * be following this semi-colon begins
1914 * with a tab, we push one back into the
1915 * input stream. This will overwrite the
1916 * semi-colon in the buffer. If there is
1917 * no command following, this does no
1918 * harm, since the newline remains in
1919 * the buffer and the
1920 * whole line is ignored.
1929 * Haven't seen a dependency operator
1930 * before this, so this must be a
1931 * variable assignment -- don't pay
1932 * attention to dependency operators
1936 } else if (lastc == ':' || lastc == '!') {
1938 * Well, we've seen a dependency
1939 * operator already, but it was the
1940 * previous character, so this is really
1941 * just an expanded variable assignment.
1942 * Revert semi-colons to being just
1943 * semi-colons again and ignore any more
1944 * dependency operators.
1946 * XXX: Note that a line like
1947 * "foo : a:=b" will blow up, but who'd
1948 * write a line like that anyway?
1956 if (lastc != '\\') {
1958 * If the character is a hash
1959 * mark and it isn't escaped
1960 * (or we're being compatible),
1961 * the thing is a comment.
1962 * Skip to the end of the line.
1966 } while (c != '\n' && c != EOF);
1970 * Don't add the backslash.
1971 * Just let the # get copied
1984 * A semi-colon is recognized as a
1985 * newline only on dependency lines.
1986 * Dependency lines are lines with a
1987 * colon or an exclamation point.
1998 * Copy in the previous character (there may be none if this
1999 * was the first character) and save this one in
2003 Buf_AddByte(buf, (Byte)lastc);
2009 if (lastc != '\0') {
2010 Buf_AddByte(buf, (Byte)lastc);
2012 Buf_AddByte(buf, (Byte)'\0');
2013 line = Buf_Peel(buf);
2016 * Strip trailing blanks and tabs from the line.
2017 * Do not strip a blank or tab that is preceded by
2023 while (ep > line + 1 && (ep[-1] == ' ' || ep[-1] == '\t')) {
2024 if (ep > line + 1 && ep[-2] == '\\')
2030 if (line[0] == '\0') {
2031 /* empty line - just ignore */
2040 *-----------------------------------------------------------------------
2041 * ParseFinishLine --
2042 * Handle the end of a dependency group.
2048 * inLine set FALSE. 'targets' list destroyed.
2050 *-----------------------------------------------------------------------
2053 ParseFinishLine(void)
2058 LST_FOREACH(ln, &targets) {
2059 if (((const GNode *)Lst_Datum(ln))->type & OP_TRANSFORM)
2060 Suff_EndTransform(Lst_Datum(ln));
2062 Lst_Destroy(&targets, ParseHasCommands);
2069 * Parse an .include directive and push the file onto the input stack.
2070 * The input is the line minus the .include. A file spec is a string
2071 * enclosed in <> or "". The former is looked for only in sysIncPath.
2072 * The latter in . and the directories specified by -I command line
2076 xparse_include(char *file, int sinclude)
2078 char *fullname; /* full pathname of file */
2079 char endc; /* the character which ends the file spec */
2080 char *cp; /* current position in file spec */
2081 Boolean isSystem; /* TRUE if makefile is a system makefile */
2082 char *prefEnd, *Fname;
2086 * Skip to delimiter character so we know where to look
2088 while (*file == ' ' || *file == '\t') {
2092 if (*file != '"' && *file != '<') {
2093 Parse_Error(PARSE_FATAL,
2094 ".include filename must be delimited by '\"' or '<'");
2099 * Set the search path on which to find the include file based on the
2100 * characters which bracket its name. Angle-brackets imply it's
2101 * a system Makefile while double-quotes imply it's a user makefile
2112 * Skip to matching delimiter
2114 for (cp = ++file; *cp != endc; cp++) {
2116 Parse_Error(PARSE_FATAL,
2117 "Unclosed .include filename. '%c' expected", endc);
2124 * Substitute for any variables in the file name before trying to
2127 file = Buf_Peel(Var_Subst(file, VAR_CMD, FALSE));
2130 * Now we know the file's name and its search path, we attempt to
2131 * find the durn thing. A return of NULL indicates the file don't
2136 * Include files contained in double-quotes are first searched
2137 * for relative to the including file's location. We don't want
2138 * to cd there, of course, so we just tack on the old file's
2139 * leading path components and call Path_FindFile to see if
2140 * we can locate the beast.
2143 /* Make a temporary copy of this, to be safe. */
2144 Fname = estrdup(CURFILE->fname);
2146 prefEnd = strrchr(Fname, '/');
2147 if (prefEnd != NULL) {
2150 newName = estrdup(file);
2152 newName = str_concat(Fname, file, STR_ADDSLASH);
2153 fullname = Path_FindFile(newName, &parseIncPath);
2154 if (fullname == NULL) {
2155 fullname = Path_FindFile(newName,
2164 if (fullname == NULL) {
2166 * Makefile wasn't found in same directory as included
2167 * makefile. Search for it first on the -I search path,
2168 * then on the .PATH search path, if not found in a -I
2170 * XXX: Suffix specific?
2172 fullname = Path_FindFile(file, &parseIncPath);
2173 if (fullname == NULL) {
2174 fullname = Path_FindFile(file, &dirSearchPath);
2181 if (fullname == NULL) {
2183 * System makefile or still haven't found the makefile.
2184 * Look for it on the system path.
2186 fullname = Path_FindFile(file, &sysIncPath);
2189 if (fullname == NULL) {
2192 Parse_Error(PARSE_FATAL, "Could not find %s", file);
2194 Main_AddSourceMakefile(file);
2198 Main_AddSourceMakefile(fullname);
2202 * We set up the name of the file to be the absolute
2203 * name of the include file so error messages refer to the right
2206 ParsePushInput(fullname, NULL, NULL, 0);
2207 DEBUGF(DIR, (".include %s\n", fullname));
2211 parse_include(char *file, int code __unused, int lineno __unused)
2213 xparse_include(file, 0);
2217 parse_sinclude(char *file, int code __unused, int lineno __unused)
2219 xparse_include(file, 1);
2224 * Parse a .warning or .error directive
2226 * The input is the line minus the ".error"/".warning". We substitute
2227 * variables, print the message and exit(1) (for .error) or just print
2228 * a warning if the directive is malformed.
2231 parse_message(char *line, int iserror, int lineno __unused)
2234 if (!isspace((u_char)*line)) {
2235 Parse_Error(PARSE_WARNING, "invalid syntax: .%s%s",
2236 iserror ? "error" : "warning", line);
2240 while (isspace((u_char)*line))
2243 line = Buf_Peel(Var_Subst(line, VAR_CMD, FALSE));
2244 Parse_Error(iserror ? PARSE_FATAL : PARSE_WARNING, "%s", line);
2248 /* Terminate immediately. */
2255 * Parse an .undef directive.
2258 parse_undef(char *line, int code __unused, int lineno __unused)
2262 while (isspace((u_char)*line))
2265 for (cp = line; !isspace((u_char)*cp) && *cp != '\0'; cp++) {
2270 cp = Buf_Peel(Var_Subst(line, VAR_CMD, FALSE));
2271 Var_Delete(cp, VAR_GLOBAL);
2277 * Parse a .for directive.
2280 parse_for(char *line, int code __unused, int lineno)
2283 if (!For_For(line)) {
2290 * Skip after the matching endfor.
2294 line = ParseSkipLine(0, 1);
2296 Parse_Error(PARSE_FATAL,
2297 "Unexpected end of file in for loop.\n");
2300 } while (For_Eval(line));
2309 * Parse endfor. This may only happen if there was no matching .for.
2312 parse_endfor(char *line __unused, int code __unused, int lineno __unused)
2315 Parse_Error(PARSE_FATAL, "for-less endfor");
2320 * Got a line starting with a '.'. Check if this is a directive
2324 * TRUE if line was a directive, FALSE otherwise.
2327 parse_directive(char *line)
2335 * .[[:space:]]*\([[:alpha:]][[:alnum:]_]*\).*
2336 * \1 is the keyword.
2338 for (start = line; isspace((u_char)*start); start++) {
2342 if (!isalpha((u_char)*start)) {
2347 while (isalnum((u_char)*cp) || *cp == '_') {
2351 dir = directive_hash(start, cp - start);
2352 if (dir < 0 || dir >= (int)NDIRECTS ||
2353 (size_t)(cp - start) != strlen(directives[dir].name) ||
2354 strncmp(start, directives[dir].name, cp - start) != 0) {
2355 /* not actually matched */
2359 if (!skipLine || directives[dir].skip_flag)
2360 (*directives[dir].func)(cp, directives[dir].code,
2366 *---------------------------------------------------------------------
2368 * Parse a file into its component parts, incorporating it into the
2369 * current dependency graph. This is the main function and controls
2370 * almost every other function in this module
2376 * Loads. Nodes are added to the list of all targets, nodes and links
2377 * are added to the dependency graph. etc. etc. etc.
2378 *---------------------------------------------------------------------
2381 Parse_File(const char *name, FILE *stream)
2383 char *cp; /* pointer into the line */
2384 char *line; /* the line we're working on */
2389 ParsePushInput(estrdup(name), stream, NULL, 0);
2391 while ((line = ParseReadLine()) != NULL) {
2392 if (*line == '.' && parse_directive(line + 1)) {
2393 /* directive consumed */
2396 if (skipLine || *line == '#') {
2397 /* Skipping .if block or comment. */
2401 if (*line == '\t') {
2403 * If a line starts with a tab, it can only
2404 * hope to be a creation command.
2406 for (cp = line + 1; isspace((unsigned char)*cp); cp++) {
2415 * So long as it's not a blank
2416 * line and we're actually in a
2417 * dependency spec, add the
2418 * command to the list of
2419 * commands of all targets in
2420 * the dependency spec.
2422 LST_FOREACH(ln, &targets) {
2430 if (!(gn->type & OP_HAS_COMMANDS))
2431 Lst_AtEnd(&gn->commands, cp);
2433 Parse_Error(PARSE_WARNING, "duplicate script "
2434 "for target \"%s\" ignored", gn->name);
2438 Parse_Error(PARSE_FATAL,
2439 "Unassociated shell command \"%s\"",
2444 } else if (strncmp(line, "include", 7) == 0 &&
2445 isspace((unsigned char)line[7]) &&
2446 strchr(line, ':') == NULL) {
2448 * It's an S3/S5-style "include".
2450 ParseTraditionalInclude(line + 7);
2453 } else if (Parse_IsVar(line)) {
2455 Parse_DoVar(line, VAR_GLOBAL);
2459 * We now know it's a dependency line so it
2460 * needs to have all variables expanded before
2461 * being parsed. Tell the variable module to
2462 * complain if some variable is undefined...
2463 * To make life easier on novices, if the line
2464 * is indented we first make sure the line has
2465 * a dependency operator in it. If it doesn't
2466 * have an operator and we're in a dependency
2467 * line's script, we assume it's actually a
2468 * shell command and add it to the current
2469 * list of targets. XXX this comment seems wrong.
2472 if (isspace((unsigned char)line[0])) {
2473 while (*cp != '\0' &&
2474 isspace((unsigned char)*cp)) {
2484 cp = Buf_Peel(Var_Subst(line, VAR_CMD, TRUE));
2490 * Need a non-circular list for the target nodes
2492 Lst_Destroy(&targets, NOFREE);
2495 ParseDoDependency(line);
2505 * Make sure conditionals are clean
2510 errx(1, "fatal errors encountered -- cannot continue");
2514 *-----------------------------------------------------------------------
2516 * Return a Lst of the main target to create for main()'s sake. If
2517 * no such target exists, we Punt with an obnoxious error message.
2520 * A Lst of the single node to create.
2525 *-----------------------------------------------------------------------
2528 Parse_MainName(Lst *listmain)
2531 if (mainNode == NULL) {
2532 Punt("no target to make.");
2534 } else if (mainNode->type & OP_DOUBLEDEP) {
2535 Lst_AtEnd(listmain, mainNode);
2536 Lst_Concat(listmain, &mainNode->cohorts, LST_CONCNEW);
2538 Lst_AtEnd(listmain, mainNode);