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
39 * $FreeBSD: src/usr.bin/make/parse.c,v 1.75 2005/02/07 11:27:47 harti Exp $
40 * $DragonFly: src/usr.bin/make/parse.c,v 1.99 2005/11/13 10:55:36 corecode Exp $
45 * Functions to parse a makefile.
47 * Most important structures are kept in Lsts. Directories for
48 * the #include "..." function are kept in the 'parseIncPath' Lst, while
49 * those for the #include <...> are kept in the 'sysIncPath' Lst. The
50 * targets currently being defined are kept in the 'targets' Lst.
54 * Parse_File Function used to parse a makefile. It must
55 * be given the name of the file, which should
56 * already have been opened, and a function
57 * to call to read a character from the file.
59 * Parse_IsVar Returns true if the given line is a
60 * variable assignment. Used by MainParseArgs
61 * to determine if an argument is a target
62 * or a variable assignment. Used internally
63 * for pretty much the same thing...
65 * Parse_Error Function called when an error occurs in
66 * parsing. Used by the variable and
67 * conditional modules.
69 * Parse_MainName Returns a Lst of the main target to create.
87 #include "hash_tables.h"
91 #include "pathnames.h"
100 * These values are returned by ParsePopInput to tell Parse_File whether to
101 * CONTINUE parsing, i.e. it had only reached the end of an include file,
107 /* targets we're working on */
108 static Lst targets = Lst_Initializer(targets);
110 /* true if currently in a dependency line or its commands */
113 static int fatals = 0;
116 * The main target to create. This is the first target on the
117 * first dependency line in the first makefile.
119 static GNode *mainNode;
122 * Definitions for handling #include specifications
125 char *fname; /* name of previous file */
126 int lineno; /* saved line number */
127 FILE *F; /* the open stream */
128 char *str; /* the string when parsing a string */
129 char *ptr; /* the current pointer when parsing a string */
130 TAILQ_ENTRY(IFile) link;/* stack the files */
133 /* stack of IFiles generated by * #includes */
134 static TAILQ_HEAD(, IFile) includes = TAILQ_HEAD_INITIALIZER(includes);
136 /* access current file */
137 #define CURFILE (TAILQ_FIRST(&includes))
140 * specType contains the SPECial TYPE of the current target. It is
141 * Not if the target is unspecial. If it *is* special, however, the children
142 * are linked as children of the parent but not vice versa. This variable is
143 * set in ParseDoDependency
147 Default, /* .DEFAULT */
149 ExportVar, /* .EXPORTVAR */
150 Ignore, /* .IGNORE */
151 Includes, /* .INCLUDES */
152 Interrupt, /* .INTERRUPT */
154 MFlags, /* .MFLAGS or .MAKEFLAGS */
155 Main, /* .MAIN and we don't have anyth. user-spec. to make */
156 Not, /* Not special */
157 NotParallel, /* .NOTPARALELL */
160 Parallel, /* .PARALLEL */
164 Precious, /* .PRECIOUS */
165 ExShell, /* .SHELL */
166 Silent, /* .SILENT */
167 SingleShell, /* .SINGLESHELL */
168 Suffixes, /* .SUFFIXES */
171 Attribute /* Generic attribute */
174 static ParseSpecial specType;
178 * Predecessor node for handling .ORDER. Initialized to NULL when .ORDER
179 * seen, then set to each successive source on the line.
181 static GNode *predecessor;
184 * The parseKeywords table is searched using binary search when deciding
185 * if a target or source is special. The 'spec' field is the ParseSpecial
186 * type of the keyword ("Not" if the keyword isn't special as a target) while
187 * the 'op' field is the operator to apply to the list of targets if the
188 * keyword is used as a source ("0" if the keyword isn't special as a source)
190 static const struct keyword {
191 const char *name; /* Name of keyword */
192 ParseSpecial spec; /* Type when used as a target */
193 int op; /* Operator when used as a source */
194 } parseKeywords[] = {
195 /* KEYWORD-START-TAG */
196 { ".BEGIN", Begin, 0 },
197 { ".DEFAULT", Default, 0 },
199 { ".EXEC", Attribute, OP_EXEC },
200 { ".EXPORTVAR", ExportVar, 0 },
201 { ".IGNORE", Ignore, OP_IGNORE },
202 { ".INCLUDES", Includes, 0 },
203 { ".INTERRUPT", Interrupt, 0 },
204 { ".INVISIBLE", Attribute, OP_INVISIBLE },
205 { ".JOIN", Attribute, OP_JOIN },
206 { ".LIBS", Libs, 0 },
207 { ".MAIN", Main, 0 },
208 { ".MAKE", Attribute, OP_MAKE },
209 { ".MAKEFLAGS", MFlags, 0 },
210 { ".MFLAGS", MFlags, 0 },
211 { ".NOTMAIN", Attribute, OP_NOTMAIN },
212 { ".NOTPARALLEL", NotParallel, 0 },
213 { ".NO_PARALLEL", NotParallel, 0 },
214 { ".NULL", Null, 0 },
215 { ".OPTIONAL", Attribute, OP_OPTIONAL },
216 { ".ORDER", Order, 0 },
217 { ".PARALLEL", Parallel, 0 },
218 { ".PATH", ExPath, 0 },
219 { ".PHONY", Phony, OP_PHONY },
220 { ".POSIX", Posix, 0 },
221 { ".PRECIOUS", Precious, OP_PRECIOUS },
222 { ".RECURSIVE", Attribute, OP_MAKE },
223 { ".SHELL", ExShell, 0 },
224 { ".SILENT", Silent, OP_SILENT },
225 { ".SINGLESHELL", SingleShell, 0 },
226 { ".SUFFIXES", Suffixes, 0 },
227 { ".USE", Attribute, OP_USE },
228 { ".WAIT", Wait, 0 },
229 { ".WARN", Warn, 0 },
230 /* KEYWORD-END-TAG */
232 #define NKEYWORDS (sizeof(parseKeywords) / sizeof(parseKeywords[0]))
234 static DirectiveHandler parse_include;
235 static DirectiveHandler parse_message;
236 static DirectiveHandler parse_makeenv;
237 static DirectiveHandler parse_undef;
238 static DirectiveHandler parse_for;
239 static DirectiveHandler parse_endfor;
241 static const struct directive {
244 bool skip_flag; /* execute even when skipped */
245 DirectiveHandler *func;
247 /* DIRECTIVES-START-TAG */
248 { "elif", COND_ELIF, true, Cond_If },
249 { "elifdef", COND_ELIFDEF, true, Cond_If },
250 { "elifmake", COND_ELIFMAKE, true, Cond_If },
251 { "elifndef", COND_ELIFNDEF, true, Cond_If },
252 { "elifnmake", COND_ELIFNMAKE, true, Cond_If },
253 { "else", COND_ELSE, true, Cond_Else },
254 { "endfor", 0, false, parse_endfor },
255 { "endif", COND_ENDIF, true, Cond_Endif },
256 { "error", 1, false, parse_message },
257 { "for", 0, false, parse_for },
258 { "if", COND_IF, true, Cond_If },
259 { "ifdef", COND_IFDEF, true, Cond_If },
260 { "ifmake", COND_IFMAKE, true, Cond_If },
261 { "ifndef", COND_IFNDEF, true, Cond_If },
262 { "ifnmake", COND_IFNMAKE, true, Cond_If },
263 { "include", 0, false, parse_include },
264 { "makeenv", 0, false, parse_makeenv },
265 { "undef", 0, false, parse_undef },
266 { "warning", 0, false, parse_message },
267 /* DIRECTIVES-END-TAG */
269 #define NDIRECTS (sizeof(directives) / sizeof(directives[0]))
273 * Look in the table of keywords for one matching the given string.
276 * The pointer to keyword table entry or NULL.
278 static const struct keyword *
279 ParseFindKeyword(const char *str)
283 kw = keyword_hash((const unsigned char *)str, strlen(str));
284 if (kw < 0 || kw >= (int)NKEYWORDS ||
285 strcmp(str, parseKeywords[kw].name) != 0)
287 return (&parseKeywords[kw]);
292 * Error message abort function for parsing. Prints out the context
293 * of the error (line number and file) as well as the message with
294 * two optional arguments.
300 * "fatals" is incremented if the level is PARSE_FATAL.
304 Parse_Error(int type, const char *fmt, ...)
310 fprintf(stderr, "\"%s\", line %d: ",
311 CURFILE->fname, CURFILE->lineno);
312 if (type == PARSE_WARNING)
313 fprintf(stderr, "warning: ");
314 vfprintf(stderr, fmt, ap);
316 fprintf(stderr, "\n");
318 if (type == PARSE_FATAL)
325 * Push a new input source onto the input stack. If ptr is NULL
326 * the fullname is used to fopen the file. If it is not NULL,
327 * ptr is assumed to point to the string to be parsed. If opening the
328 * file fails, the fullname is freed.
331 ParsePushInput(char *fullname, FILE *fp, char *ptr, int lineno)
335 nf = emalloc(sizeof(*nf));
336 nf->fname = fullname;
340 /* the input source is a file */
341 if ((nf->F = fp) == NULL) {
342 nf->F = fopen(fullname, "r");
344 Parse_Error(PARSE_FATAL, "Cannot open %s",
351 nf->str = nf->ptr = NULL;
352 Var_Append(".MAKEFILE_LIST", fullname, VAR_GLOBAL);
354 nf->str = nf->ptr = ptr;
357 TAILQ_INSERT_HEAD(&includes, nf, link);
362 * Called when EOF is reached in the current file. If we were reading
363 * an include file, the includes stack is popped and things set up
364 * to go back to reading the previous file at the previous location.
367 * CONTINUE if there's more to do. DONE if not.
370 * The old curFile.F is closed, but only if it was not a top-level
371 * file. The includes list is shortened. curFile.lineno, curFile.F,
372 * and curFile.fname are changed if CONTINUE is returned.
377 struct IFile *ifile; /* the state on the top of the includes stack */
379 assert(!TAILQ_EMPTY(&includes));
381 ifile = TAILQ_FIRST(&includes);
382 TAILQ_REMOVE(&includes, ifile, link);
385 if (ifile->F != NULL) {
386 /* Don't close the top-level file */
387 if (!TAILQ_EMPTY(&includes))
389 Var_Append(".MAKEFILE_LIST", "..", VAR_GLOBAL);
391 if (ifile->str != NULL) {
396 return (TAILQ_EMPTY(&includes) ? DONE : CONTINUE);
401 * Parse the .WARN pseudo-target.
404 parse_warn(const char line[])
409 brk_string(&aa, line, true);
411 for (i = 1; i < aa.argc; i++)
412 Main_ParseWarn(aa.argv[i], 0);
416 *---------------------------------------------------------------------
418 * Link the parent nodes to their new child. Used by
419 * ParseDoDependency. If the specType isn't 'Not', the parent
420 * isn't linked as a parent of the child.
423 * New elements are added to the parents lists of cgn and the
424 * children list of cgn. the unmade field of pgn is updated
425 * to reflect the additional child.
426 *---------------------------------------------------------------------
429 ParseLinkSrc(Lst *parents, GNode *cgn)
434 LST_FOREACH(ln, parents) {
436 if (Lst_Member(&pgn->children, cgn) == NULL) {
437 Lst_AtEnd(&pgn->children, cgn);
438 if (specType == Not) {
439 Lst_AtEnd(&cgn->parents, pgn);
447 *---------------------------------------------------------------------
449 * Apply the parsed operator to all target nodes. Used in
450 * ParseDoDependency once all targets have been found and their
451 * operator parsed. If the previous and new operators are incompatible,
452 * a major error is taken.
455 * The type field of the node is altered to reflect any new bits in
457 *---------------------------------------------------------------------
466 LST_FOREACH(ln, &targets) {
470 * If the dependency mask of the operator and the node don't
471 * match and the node has actually had an operator applied to
472 * it before, and the operator actually has some dependency
473 * information in it, complain.
475 if ((op & OP_OPMASK) != (gn->type & OP_OPMASK) &&
476 !OP_NOP(gn->type) && !OP_NOP(op)) {
477 Parse_Error(PARSE_FATAL, "Inconsistent operator for %s",
482 if (op == OP_DOUBLEDEP &&
483 (gn->type & OP_OPMASK) == OP_DOUBLEDEP) {
485 * If the node was the object of a :: operator, we need
486 * to create a new instance of it for the children and
487 * commands on this dependency line. The new instance
488 * is placed on the 'cohorts' list of the initial one
489 * (note the initial one is not on its own cohorts list)
490 * and the new instance is linked to all parents of the
493 cohort = Targ_NewGN(gn->name);
496 * Duplicate links to parents so graph traversal is
497 * simple. Perhaps some type bits should be duplicated?
499 * Make the cohort invisible as well to avoid
500 * duplicating it into other variables. True, parents
501 * of this target won't tend to do anything with their
502 * local variables, but better safe than sorry.
504 ParseLinkSrc(&gn->parents, cohort);
505 cohort->type = OP_DOUBLEDEP|OP_INVISIBLE;
506 Lst_AtEnd(&gn->cohorts, cohort);
509 * Replace the node in the targets list with the
512 Lst_Replace(ln, cohort);
516 * We don't want to nuke any previous flags (whatever they were)
517 * so we just OR the new operator into the old
524 *---------------------------------------------------------------------
526 * Given the name of a source, figure out if it is an attribute
527 * and apply it to the targets if it is. Else decide if there is
528 * some attribute which should be applied *to* the source because
529 * of some special target and apply it if so. Otherwise, make the
530 * source be a child of the targets in the list 'targets'
536 * Operator bits may be added to the list of targets or to the source.
537 * The targets may have a new source added to their lists of children.
538 *---------------------------------------------------------------------
541 ParseDoSrc(Parser *parser, int tOp, char *src, Lst *allsrc)
544 const struct keyword *kw;
546 if (src[0] == '.' && isupper ((unsigned char)src[1])) {
547 if ((kw = ParseFindKeyword(src)) != NULL) {
552 if (kw->spec == Wait) {
562 * If we have noted the existence of a .MAIN, it means we need
563 * to add the sources of said target to the list of things
564 * to create. The string 'src' is likely to be free, so we
565 * must make a new copy of it. Note that this will only be
566 * invoked if the user didn't specify a target on the command
567 * line. This is to allow #ifmake's to succeed, or something...
569 Lst_AtEnd(parser->create, estrdup(src));
571 * Add the name to the .TARGETS variable as well, so the user
572 * can employ that, if desired.
574 Var_Append(".TARGETS", src, VAR_GLOBAL);
579 * Create proper predecessor/successor links between the
580 * previous source and the current one.
582 gn = Targ_FindNode(src, TARG_CREATE);
583 if (predecessor != NULL) {
584 Lst_AtEnd(&predecessor->successors, gn);
585 Lst_AtEnd(&gn->preds, predecessor);
588 * The current source now becomes the predecessor for the next
596 * If the source is not an attribute, we need to find/create
597 * a node for it. After that we can apply any operator to it
598 * from a special target or link it to its parents, as
601 * In the case of a source that was the object of a :: operator,
602 * the attribute is applied to all of its instances (as kept in
603 * the 'cohorts' list of the node) or all the cohorts are linked
604 * to all the targets.
606 gn = Targ_FindNode(src, TARG_CREATE);
610 ParseLinkSrc(&targets, gn);
612 if ((gn->type & OP_OPMASK) == OP_DOUBLEDEP) {
616 for (ln = Lst_First(&gn->cohorts); ln != NULL;
618 cohort = Lst_Datum(ln);
622 ParseLinkSrc(&targets, cohort);
630 Lst_AtEnd(allsrc, gn);
636 * Check if GNodes needs to be synchronized.
637 * This has to be when two nodes are on different sides of a
640 LST_FOREACH(ln, allsrc) {
643 if (p->order >= gn->order)
646 * XXX: This can cause loops, and loops can cause
647 * unmade targets, but checking is tedious, and the
648 * debugging output can show the problem
650 Lst_AtEnd(&p->successors, gn);
651 Lst_AtEnd(&gn->preds, p);
658 *---------------------------------------------------------------------
659 * ParseDoDependency --
660 * Parse the dependency line in line.
666 * The nodes of the sources are linked as children to the nodes of the
667 * targets. Some nodes may be created.
669 * We parse a dependency line by first extracting words from the line and
670 * finding nodes in the list of all targets with that name. This is done
671 * until a character is encountered which is an operator character. Currently
672 * these are only ! and :. At this point the operator is parsed and the
673 * pointer into the line advanced until the first source is encountered.
674 * The parsed operator is applied to each node in the 'targets' list,
675 * which is where the nodes found for the targets are kept, by means of
676 * the ParseDoOp function.
677 * The sources are read in much the same way as the targets were except
678 * that now they are expanded using the wildcarding scheme of the C-Shell
679 * and all instances of the resulting words in the list of all targets
680 * are found. Each of the resulting nodes is then linked to each of the
681 * targets as one of its children.
682 * Certain targets are handled specially. These are the ones detailed
683 * by the specType variable.
684 * The storing of transformation rules is also taken care of here.
685 * A target is recognized as a transformation rule by calling
686 * Suff_IsTransform. If it is a transformation rule, its node is gotten
687 * from the suffix module via Suff_AddTransform rather than the standard
688 * Targ_FindNode in the target module.
689 *---------------------------------------------------------------------
692 ParseDoDependency(Parser *parser, struct CLI *cli, char line[])
694 char *cp; /* our current position */
695 GNode *gn; /* a general purpose temporary node */
696 int op; /* the operator on the line */
697 char savec; /* a place to save a character */
698 Lst paths; /* Search paths to alter when parsing .PATH targets */
699 int tOp; /* operator from special target */
701 const struct keyword *kw;
711 *cp && !isspace((unsigned char)*cp) && *cp != OPEN_PAREN;
715 * Must be a dynamic source (would have been
716 * expanded otherwise), so call the Var module
717 * to parse the puppy so we can safely advance
718 * beyond it...There should be no errors in this
719 * as they would have been discovered in the
720 * initial Var_Subst and we wouldn't be here.
726 result = Var_Parse(cp, VAR_CMD, true,
734 } else if (*cp == '!' || *cp == ':') {
736 * We don't want to end a word on ':' or '!' if
737 * there is a better match later on in the
738 * string (greedy matching).
739 * This allows the user to have targets like:
742 * where "fie::fi:fo" and "foo::bar" are the
743 * targets. In real life this is used for perl5
744 * library man pages where "::" separates an
745 * object from its class. Ie:
746 * "File::Spec::Unix". This behaviour is also
747 * consistent with other versions of make.
751 if (*cp == ':' && *p == ':')
754 /* Found the best match already. */
755 if (*p == '\0' || isspace((unsigned char)*p))
758 p += strcspn(p, "!:");
760 /* No better match later on... */
766 if (*cp == OPEN_PAREN) {
768 * Archives must be handled specially to make sure the
769 * OP_ARCHV flag is set in their 'type' field, for one
770 * thing, and because things like "archive(file1.o
771 * file2.o file3.o)" are permissible. Arch_ParseArchive
772 * will set 'line' to be the first non-blank after the
773 * archive-spec. It creates/finds nodes for the members
774 * and places them on the given list, returning true
775 * if all went well and false if there was an error in
776 * the specification. On error, line should remain
779 if (!Arch_ParseArchive(&line, &targets, VAR_CMD)) {
780 Parse_Error(PARSE_FATAL,
781 "Error in archive specification: \"%s\"",
793 * Ending a dependency line without an operator is a * Bozo no-no. As a heuristic, this is also often
794 * triggered by undetected conflicts from cvs/rcs
797 if (strncmp(line, "<<<<<<", 6) == 0 ||
798 strncmp(line, "======", 6) == 0 ||
799 strncmp(line, ">>>>>>", 6) == 0) {
800 Parse_Error(PARSE_FATAL, "Makefile appears to "
801 "contain unresolved cvs/rcs/??? merge "
804 Parse_Error(PARSE_FATAL, "Need an operator");
809 * Have a word in line. See if it's a special target and set
810 * specType to match it.
812 if (*line == '.' && isupper((unsigned char)line[1])) {
814 * See if the target is a special target that must have
815 * it or its sources handled specially.
817 if ((kw = ParseFindKeyword(line)) != NULL) {
818 if (specType == ExPath && kw->spec != ExPath) {
819 Parse_Error(PARSE_FATAL,
820 "Mismatched special targets");
828 * Certain special targets have special
830 * .PATH Have to set the dirSearchPath
832 * .MAIN Its sources are only used if
833 * nothing has been specified to
835 * .DEFAULT Need to create a node to hang
836 * commands on, but we don't want
837 * it in the graph, nor do we want
838 * it to be the Main Target, so we
839 * create it, set OP_NOTMAIN and
840 * add it to the list, setting
841 * DEFAULT to the new node for
842 * later use. We claim the node is
843 * A transformation rule to make
844 * life easier later, when we'll
845 * use Make_HandleUse to actually
846 * apply the .DEFAULT commands.
847 * .PHONY The list of targets
850 * .INTERRUPT Are not to be considered the
852 * .NOTPARALLEL Make only one target at a time.
853 * .SINGLESHELL Create a shell for each
855 * .ORDER Must set initial predecessor
860 Lst_AtEnd(&paths, &dirSearchPath);
863 if (!Lst_IsEmpty(parser->create)) {
870 gn = Targ_FindNode(line, TARG_CREATE);
871 gn->type |= OP_NOTMAIN;
872 Lst_AtEnd(&targets, gn);
875 gn = Targ_NewGN(".DEFAULT");
876 gn->type |= (OP_NOTMAIN|OP_TRANSFORM);
877 Lst_AtEnd(&targets, gn);
893 } else if (strncmp(line, ".PATH", 5) == 0) {
895 * .PATH<suffix> has to be handled specially.
896 * Call on the suffix module to give us a path
902 path = Suff_GetPath(&line[5]);
904 Parse_Error(PARSE_FATAL, "Suffix '%s' "
905 "not defined (yet)", &line[5]);
908 Lst_AtEnd(&paths, path);
913 * Have word in line. Get or create its node and stick it at
914 * the end of the targets list
916 if (specType == Not && *line != '\0') {
918 /* target names to be found and added to targets list */
919 Lst curTargs = Lst_Initializer(curTargs);
921 if (Dir_HasWildcards(line)) {
923 * Targets are to be sought only in the current
924 * directory, so create an empty path for the
925 * thing. Note we need to use Path_Clear in the
926 * destruction of the path as the Dir module
927 * could have added a directory to the path...
929 struct Path emptyPath =
930 TAILQ_HEAD_INITIALIZER(emptyPath);
932 Path_Expand(line, &emptyPath, &curTargs);
933 Path_Clear(&emptyPath);
937 * No wildcards, but we want to avoid code
938 * duplication, so create a list with the word
941 Lst_AtEnd(&curTargs, line);
944 while (!Lst_IsEmpty(&curTargs)) {
945 char *targName = Lst_DeQueue(&curTargs);
947 if (!Suff_IsTransform (targName)) {
948 gn = Targ_FindNode(targName,
951 gn = Suff_AddTransform(targName);
954 Lst_AtEnd(&targets, gn);
956 } else if (specType == ExPath && *line != '.' && *line != '\0'){
957 Parse_Error(PARSE_WARNING, "Extra target (%s) ignored",
963 * If it is a special type and not .PATH, it's the only
964 * target we allow on this line...
966 if (specType != Not && specType != ExPath) {
967 bool warnFlag = false;
969 while (*cp != '!' && *cp != ':' && *cp) {
970 if (*cp != ' ' && *cp != '\t') {
976 Parse_Error(PARSE_WARNING,
977 "Extra target ignored");
980 while (*cp && isspace((unsigned char)*cp)) {
985 } while (*line != '!' && *line != ':' && *line);
987 if (!Lst_IsEmpty(&targets)) {
990 Parse_Error(PARSE_WARNING, "Special and mundane "
991 "targets don't mix. Mundane ones ignored");
998 * These four create nodes on which to hang commands, so
999 * targets shouldn't be empty...
1003 * Nothing special here -- targets can be empty if it
1011 * Have now parsed all the target names. Must parse the operator next.
1012 * The result is left in op.
1016 } else if (*cp == ':') {
1024 Parse_Error(PARSE_FATAL, "Missing dependency operator");
1028 cp++; /* Advance beyond operator */
1033 * Get to the first source
1035 while (*cp && isspace((unsigned char)*cp)) {
1041 * Several special targets take different actions if present with no
1043 * a .SUFFIXES line with no sources clears out all old suffixes
1044 * a .PRECIOUS line makes all targets precious
1045 * a .IGNORE line ignores errors for all targets
1046 * a .SILENT line creates silence when making all targets
1047 * a .PATH removes all directories from the search path(s).
1052 Suff_ClearSuffixes();
1058 ignoreErrors = true;
1064 LST_FOREACH(ln, &paths)
1065 Path_Clear(Lst_Datum(ln));
1068 Var_SetGlobal("%POSIX", "1003.2");
1074 } else if (specType == MFlags) {
1076 * Call on functions in main.c to deal with these arguments and
1077 * set the initial character to a null-character so the loop to
1078 * get sources won't get anything
1080 Main_ParseArgLine(cli, line, 0);
1083 } else if (specType == Warn) {
1087 } else if (specType == ExShell) {
1090 if ((shell = Shell_Parse(line)) == NULL) {
1091 Parse_Error(PARSE_FATAL,
1092 "improper shell specification");
1095 commandShell = shell;
1098 } else if (specType == NotParallel || specType == SingleShell) {
1103 * NOW GO FOR THE SOURCES
1105 if (specType == Suffixes || specType == ExPath ||
1106 specType == Includes || specType == Libs ||
1110 * If the target was one that doesn't take files as its
1111 * sources but takes something like suffixes, we take
1112 * each space-separated word on the line as a something
1113 * and deal with it accordingly.
1115 * If the target was .SUFFIXES, we take each source as
1116 * a suffix and add it to the list of suffixes
1117 * maintained by the Suff module.
1119 * If the target was a .PATH, we add the source as a
1120 * directory to search on the search path.
1122 * If it was .INCLUDES, the source is taken to be the
1123 * suffix of files which will be #included and whose
1124 * search path should be present in the .INCLUDES
1127 * If it was .LIBS, the source is taken to be the
1128 * suffix of files which are considered libraries and
1129 * whose search path should be present in the .LIBS
1132 * If it was .NULL, the source is the suffix to use
1133 * when a file has no valid suffix.
1136 while (*cp && !isspace((unsigned char)*cp)) {
1143 Suff_AddSuffix(line);
1146 LST_FOREACH(ln, &paths)
1147 Path_AddDir(Lst_Datum(ln), line);
1150 Suff_AddInclude(line);
1162 if (savech != '\0') {
1165 while (*cp && isspace((unsigned char)*cp)) {
1170 Lst_Destroy(&paths, NOFREE);
1172 } else if (specType == ExportVar) {
1173 Var_SetEnv(line, VAR_GLOBAL);
1176 /* list of sources in order */
1177 Lst curSrcs = Lst_Initializer(curSrc);
1181 * The targets take real sources, so we must beware of
1182 * archive specifications (i.e. things with left
1183 * parentheses in them) and handle them accordingly.
1185 while (*cp && !isspace((unsigned char)*cp)) {
1186 if (*cp == OPEN_PAREN && cp > line && cp[-1] != '$') {
1188 * Only stop for a left parenthesis if
1189 * it isn't at the start of a word
1190 * (that'll be for variable changes
1191 * later) and isn't preceded by a dollar
1192 * sign (a dynamic source).
1200 if (*cp == OPEN_PAREN) {
1203 /* list of archive source names after exp. */
1204 Lst sources = Lst_Initializer(sources);
1206 if (!Arch_ParseArchive(&line, &sources,
1208 Parse_Error(PARSE_FATAL, "Error in "
1209 "source archive spec \"%s\"", line);
1213 while (!Lst_IsEmpty(&sources)) {
1214 gnp = Lst_DeQueue(&sources);
1215 ParseDoSrc(parser, tOp, gnp->name, &curSrcs);
1224 ParseDoSrc(parser, tOp, line, &curSrcs);
1226 while (*cp && isspace((unsigned char)*cp)) {
1231 Lst_Destroy(&curSrcs, NOFREE);
1234 if (mainNode == NULL) {
1236 * If we have yet to decide on a main target to make, in the
1237 * absence of any user input, we want the first target on
1238 * the first dependency line that is actually a real target
1239 * (i.e. isn't a .USE or .EXEC rule) to be made.
1241 LST_FOREACH(ln, &targets) {
1243 if ((gn->type & (OP_NOTMAIN | OP_USE |
1244 OP_EXEC | OP_TRANSFORM)) == 0) {
1254 *---------------------------------------------------------------------
1256 * Return true if the passed line is a variable assignment. A variable
1257 * assignment consists of a single word followed by optional whitespace
1258 * followed by either a += or an = operator.
1259 * This function is used both by the Parse_File function and main when
1260 * parsing the command-line arguments.
1263 * true if it is. false if it ain't
1267 *---------------------------------------------------------------------
1270 Parse_IsVar(char *line)
1272 bool wasSpace = false; /* set true if found a space */
1273 bool haveName = false; /* Set true if have a variable name */
1276 #define ISEQOPERATOR(c) \
1277 ((c) == '+' || (c) == ':' || (c) == '?' || (c) == '!')
1280 * Skip to variable name
1282 for (; *line == ' ' || *line == '\t'; line++)
1285 for (; *line != '=' || level != 0; line++) {
1289 * end-of-line -- can't be a variable assignment.
1296 * there can be as much white space as desired so long
1297 * as there is only one word before the operator
1313 if (wasSpace && haveName) {
1314 if (ISEQOPERATOR(*line)) {
1316 * We must have a finished word
1322 * When an = operator [+?!:] is found,
1323 * the next character must be an = or
1324 * it ain't a valid assignment.
1330 * This is a shell command
1332 if (strncmp(line, ":sh", 3) == 0)
1337 * This is the start of another word, so not
1354 *---------------------------------------------------------------------
1356 * Take the variable assignment in the passed line and do it in the
1359 * Note: There is a lexical ambiguity with assignment modifier characters
1360 * in variable names. This routine interprets the character before the =
1361 * as a modifier. Therefore, an assignment like
1363 * is interpreted as "C+ +=" instead of "C++ =".
1369 * the variable structure of the given variable name is altered in the
1371 *---------------------------------------------------------------------
1374 Parse_DoVar(char *line, GNode *ctxt)
1376 char *cp; /* pointer into line */
1382 } type; /* Type of assignment */
1383 char *opc; /* ptr to operator character to
1384 * null-terminate the variable name */
1387 * Skip to variable name
1389 while (*line == ' ' || *line == '\t') {
1394 * Skip to operator character, nulling out whitespace as we go
1396 for (cp = line + 1; *cp != '='; cp++) {
1397 if (isspace((unsigned char)*cp)) {
1401 opc = cp - 1; /* operator is the previous character */
1402 *cp++ = '\0'; /* nuke the = */
1405 * Check operator type
1415 * If the variable already has a value, we don't do anything.
1418 if (Var_Value(line, ctxt) != NULL) {
1437 while (*opc != ':') {
1444 if (strncmp(opc, ":sh", 3) == 0) {
1454 while (isspace((unsigned char)*cp)) {
1458 if (type == VAR_APPEND) {
1459 Var_Append(line, cp, ctxt);
1461 } else if (type == VAR_SUBST) {
1463 * Allow variables in the old value to be undefined, but leave
1464 * their invocation alone -- this is done by forcing oldVars
1466 * XXX: This can cause recursive variables, but that's not
1467 * hard to do, and this allows someone to do something like
1469 * CFLAGS = $(.INCLUDES)
1470 * CFLAGS := -I.. $(CFLAGS)
1472 * And not get an error.
1474 bool oldOldVars = oldVars;
1479 * make sure that we set the variable the first time to nothing
1480 * so that it gets substituted!
1482 if (Var_Value(line, ctxt) == NULL)
1483 Var_Set(line, "", ctxt);
1485 cp = Buf_Peel(Var_Subst(cp, ctxt, false));
1487 oldVars = oldOldVars;
1489 Var_Set(line, cp, ctxt);
1492 } else if (type == VAR_SHELL) {
1494 * true if the command needs to be freed, i.e.
1495 * if any variable expansion was performed
1497 bool freeCmd = false;
1501 if (strchr(cp, '$') != NULL) {
1503 * There's a dollar sign in the command, so perform
1504 * variable expansion on the whole thing. The
1505 * resulting string will need freeing when we're done,
1506 * so set freeCmd to true.
1508 cp = Buf_Peel(Var_Subst(cp, VAR_CMD, true));
1512 buf = Cmd_Exec(cp, &error);
1513 Var_Set(line, Buf_Data(buf), ctxt);
1514 Buf_Destroy(buf, true);
1517 Parse_Error(PARSE_WARNING, error, cp);
1524 * Normal assignment -- just do it.
1526 Var_Set(line, cp, ctxt);
1531 *-----------------------------------------------------------------------
1532 * ParseHasCommands --
1533 * Callback procedure for Parse_File when destroying the list of
1534 * targets on the last dependency line. Marks a target as already
1535 * having commands if it does, to keep from having shell commands
1536 * on multiple dependency lines.
1542 * OP_HAS_COMMANDS may be set for the target.
1544 *-----------------------------------------------------------------------
1547 ParseHasCommands(void *gnp)
1551 if (!Lst_IsEmpty(&gn->commands)) {
1552 gn->type |= OP_HAS_COMMANDS;
1557 *---------------------------------------------------------------------
1558 * Parse_FromString --
1559 * Start Parsing from the given string
1565 * A structure is added to the includes Lst and readProc, curFile.lineno,
1566 * curFile.fname and curFile.F are altered for the new file
1567 *---------------------------------------------------------------------
1570 Parse_FromString(char *str, int lineno)
1573 DEBUGF(FOR, ("%s\n---- at line %d\n", str, lineno));
1575 ParsePushInput(estrdup(CURFILE->fname), NULL, str, lineno);
1580 *---------------------------------------------------------------------
1581 * ParseTraditionalInclude --
1582 * Push to another file.
1584 * The input is the line minus the "include". The file name is
1585 * the string following the "include".
1591 * A structure is added to the includes Lst and readProc, curFile.lineno,
1592 * curFile.fname and curFile.F are altered for the new file
1593 *---------------------------------------------------------------------
1596 ParseTraditionalInclude(Parser *parser, char *file)
1598 char *fullname; /* full pathname of file */
1599 char *cp; /* current position in file spec */
1602 * Skip over whitespace
1604 while (*file == ' ' || *file == '\t') {
1608 if (*file == '\0') {
1609 Parse_Error(PARSE_FATAL, "Filename missing from \"include\"");
1614 * Skip to end of line or next whitespace
1616 for (cp = file; *cp && *cp != '\n' && *cp != '\t' && *cp != ' '; cp++) {
1623 * Substitute for any variables in the file name before trying to
1626 file = Buf_Peel(Var_Subst(file, VAR_CMD, false));
1629 * Now we know the file's name, we attempt to find the durn thing.
1630 * Search for it first on the -I search path, then on the .PATH
1631 * search path, if not found in a -I directory.
1633 fullname = Path_FindFile(file, parser->parseIncPath);
1634 if (fullname == NULL) {
1635 fullname = Path_FindFile(file, &dirSearchPath);
1638 if (fullname == NULL) {
1640 * Still haven't found the makefile. Look for it on the system
1641 * path as a last resort.
1643 fullname = Path_FindFile(file, parser->sysIncPath);
1646 if (fullname == NULL) {
1647 Parse_Error(PARSE_FATAL, "Could not find %s", file);
1648 /* XXXHB free(file) */
1652 /* XXXHB free(file) */
1655 * We set up the name of the file to be the absolute
1656 * name of the include file so error messages refer to the right
1659 ParsePushInput(fullname, NULL, NULL, 0);
1664 *---------------------------------------------------------------------
1666 * Read a character from the current file
1669 * The character that was read
1672 *---------------------------------------------------------------------
1678 if (CURFILE->F != NULL)
1679 return (fgetc(CURFILE->F));
1681 if (CURFILE->str != NULL && *CURFILE->ptr != '\0')
1682 return (*CURFILE->ptr++);
1689 *---------------------------------------------------------------------
1691 * Put back a character to the current file
1697 *---------------------------------------------------------------------
1703 if (CURFILE->F != NULL) {
1704 ungetc(c, CURFILE->F);
1707 if (CURFILE->str != NULL) {
1708 *--(CURFILE->ptr) = c;
1714 * Grab the next line unless it begins with a dot (`.') and we're told to
1715 * ignore such lines.
1718 ParseSkipLine(int skip, int keep_newline)
1724 buf = Buf_Init(MAKE_BSIZE);
1730 while (((c = ParseReadc()) != '\n' || lastc == '\\')
1732 if (skip && c == '#' && lastc != '\\') {
1734 * let a comment be terminated even by an
1735 * escaped \n. This is consistent to comment
1736 * handling in ParseReadLine
1738 while ((c = ParseReadc()) != '\n' && c != EOF)
1744 Buf_AddByte(buf, c);
1746 Buf_ReplaceLastByte(buf, ' ');
1749 while ((c = ParseReadc()) == ' ' || c == '\t')
1756 Buf_AddByte(buf, c);
1761 Parse_Error(PARSE_FATAL,
1762 "Unclosed conditional/for loop");
1763 Buf_Destroy(buf, true);
1768 Buf_AddByte(buf, '\0');
1769 line = Buf_Data(buf);
1770 } while (skip == 1 && line[0] != '.');
1772 Buf_Destroy(buf, false);
1777 *---------------------------------------------------------------------
1779 * Read an entire line from the input file. Called only by Parse_File.
1780 * To facilitate escaped newlines and what have you, a character is
1781 * buffered in 'lastc', which is '\0' when no characters have been
1782 * read. When we break out of the loop, c holds the terminating
1783 * character and lastc holds a character that should be added to
1784 * the line (unless we don't read anything but a terminator).
1787 * A line w/o its newline
1790 * Only those associated with reading a character
1791 *---------------------------------------------------------------------
1796 Buffer *buf; /* Buffer for current line */
1797 int c; /* the current character */
1798 int lastc; /* The most-recent character */
1799 bool semiNL; /* treat semi-colons as newlines */
1800 bool ignDepOp; /* true if should ignore dependency operators
1801 * for the purposes of setting semiNL */
1802 bool ignComment; /* true if should ignore comments (in a
1804 char *line; /* Result */
1805 char *ep; /* to strip trailing blanks */
1815 * Handle tab at the beginning of the line. A leading tab (shell
1816 * command) forces us to ignore comments and dependency operators and
1817 * treat semi-colons as semi-colons (by leaving semiNL false).
1818 * This also discards completely blank lines.
1823 if (ParsePopInput() == DONE) {
1824 /* End of all inputs - return NULL */
1831 ignComment = ignDepOp = true;
1842 buf = Buf_Init(MAKE_BSIZE);
1844 while (((c = ParseReadc()) != '\n' || lastc == '\\') && c != EOF) {
1849 * Escaped newline: read characters until a
1850 * non-space or an unescaped newline and
1851 * replace them all by a single space. This is
1852 * done by storing the space over the backslash
1853 * and dropping through with the next nonspace.
1854 * If it is a semi-colon and semiNL is true,
1855 * it will be recognized as a newline in the
1856 * code below this...
1860 while ((c = ParseReadc()) == ' ' || c == '\t') {
1863 if (c == EOF || c == '\n') {
1867 * Check for comments, semiNL's, etc. --
1868 * easier than ParseUnreadc(c);
1878 * Semi-colon: Need to see if it should be
1879 * interpreted as a newline
1883 * To make sure the command that may
1884 * be following this semi-colon begins
1885 * with a tab, we push one back into the
1886 * input stream. This will overwrite the
1887 * semi-colon in the buffer. If there is
1888 * no command following, this does no
1889 * harm, since the newline remains in
1890 * the buffer and the
1891 * whole line is ignored.
1900 * Haven't seen a dependency operator
1901 * before this, so this must be a
1902 * variable assignment -- don't pay
1903 * attention to dependency operators
1907 } else if (lastc == ':' || lastc == '!') {
1909 * Well, we've seen a dependency
1910 * operator already, but it was the
1911 * previous character, so this is really
1912 * just an expanded variable assignment.
1913 * Revert semi-colons to being just
1914 * semi-colons again and ignore any more
1915 * dependency operators.
1917 * XXX: Note that a line like
1918 * "foo : a:=b" will blow up, but who'd
1919 * write a line like that anyway?
1927 if (lastc != '\\') {
1929 * If the character is a hash
1930 * mark and it isn't escaped
1931 * (or we're being compatible),
1932 * the thing is a comment.
1933 * Skip to the end of the line.
1937 } while (c != '\n' && c != EOF);
1941 * Don't add the backslash.
1942 * Just let the # get copied
1955 * A semi-colon is recognized as a
1956 * newline only on dependency lines.
1957 * Dependency lines are lines with a
1958 * colon or an exclamation point.
1969 * Copy in the previous character (there may be none if this
1970 * was the first character) and save this one in
1974 Buf_AddByte(buf, lastc);
1980 if (lastc != '\0') {
1981 Buf_AddByte(buf, lastc);
1983 Buf_AddByte(buf, '\0');
1984 line = Buf_Peel(buf);
1987 * Strip trailing blanks and tabs from the line.
1988 * Do not strip a blank or tab that is preceded by
1994 while (ep > line + 1 && (ep[-1] == ' ' || ep[-1] == '\t')) {
1995 if (ep > line + 1 && ep[-2] == '\\')
2001 if (line[0] == '\0') {
2002 /* empty line - just ignore */
2011 *-----------------------------------------------------------------------
2012 * ParseFinishLine --
2013 * Handle the end of a dependency group.
2019 * inLine set false. 'targets' list destroyed.
2021 *-----------------------------------------------------------------------
2024 ParseFinishLine(void)
2029 LST_FOREACH(ln, &targets) {
2030 if (((const GNode *)Lst_Datum(ln))->type & OP_TRANSFORM)
2031 Suff_EndTransform(Lst_Datum(ln));
2033 Lst_Destroy(&targets, ParseHasCommands);
2040 * Parse an .include directive and push the file onto the input stack.
2041 * The input is the line minus the .include. A file spec is a string
2042 * enclosed in <> or "". The former is looked for only in sysIncPath.
2043 * The latter in . and the directories specified by -I command line
2047 parse_include(Parser *parser __unused, char *file, int code __unused, int lineno __unused)
2049 char *fullname; /* full pathname of file */
2050 char endc; /* the character which ends the file spec */
2051 char *cp; /* current position in file spec */
2052 bool isSystem; /* true if makefile is a system makefile */
2053 char *prefEnd, *Fname;
2057 * Skip to delimiter character so we know where to look
2059 while (*file == ' ' || *file == '\t') {
2063 if (*file != '"' && *file != '<') {
2064 Parse_Error(PARSE_FATAL,
2065 ".include filename must be delimited by '\"' or '<'");
2070 * Set the search path on which to find the include file based on the
2071 * characters which bracket its name. Angle-brackets imply it's
2072 * a system Makefile while double-quotes imply it's a user makefile
2083 * Skip to matching delimiter
2085 for (cp = ++file; *cp != endc; cp++) {
2087 Parse_Error(PARSE_FATAL,
2088 "Unclosed .include filename. '%c' expected", endc);
2095 * Substitute for any variables in the file name before trying to
2098 file = Buf_Peel(Var_Subst(file, VAR_CMD, false));
2101 * Now we know the file's name and its search path, we attempt to
2102 * find the durn thing. A return of NULL indicates the file don't
2107 * Include files contained in double-quotes are first searched
2108 * for relative to the including file's location. We don't want
2109 * to cd there, of course, so we just tack on the old file's
2110 * leading path components and call Dir_FindFile to see if
2111 * we can locate the beast.
2114 /* Make a temporary copy of this, to be safe. */
2115 Fname = estrdup(CURFILE->fname);
2117 prefEnd = strrchr(Fname, '/');
2118 if (prefEnd != NULL) {
2121 newName = estrdup(file);
2123 newName = str_concat(Fname, '/', file);
2124 fullname = Path_FindFile(newName, parser->parseIncPath);
2125 if (fullname == NULL) {
2126 fullname = Path_FindFile(newName,
2139 if (fullname == NULL) {
2141 * System makefile or makefile wasn't found in same directory as
2142 * included makefile. Search for it first on the -I search path,
2143 * then on the .PATH search path, if not found in a -I
2145 * XXX: Suffix specific?
2147 fullname = Path_FindFile(file, parser->parseIncPath);
2148 if (fullname == NULL) {
2149 fullname = Path_FindFile(file, &dirSearchPath);
2153 if (fullname == NULL) {
2155 * Still haven't found the makefile. Look for it on the system
2156 * path as a last resort.
2158 fullname = Path_FindFile(file, parser->sysIncPath);
2161 if (fullname == NULL) {
2163 Parse_Error(PARSE_FATAL, "Could not find %s", file);
2170 * We set up the name of the file to be the absolute
2171 * name of the include file so error messages refer to the right
2174 ParsePushInput(fullname, NULL, NULL, 0);
2179 * Parse a .warning or .error directive
2181 * The input is the line minus the ".error"/".warning". We substitute
2182 * variables, print the message and exit(1) (for .error) or just print
2183 * a warning if the directive is malformed.
2186 parse_message(Parser *parser __unused, char *line, int iserror, int lineno __unused)
2189 if (!isspace((u_char)*line)) {
2190 Parse_Error(PARSE_WARNING, "invalid syntax: .%s%s",
2191 iserror ? "error" : "warning", line);
2195 while (isspace((u_char)*line))
2198 line = Buf_Peel(Var_Subst(line, VAR_GLOBAL, false));
2199 Parse_Error(iserror ? PARSE_FATAL : PARSE_WARNING, "%s", line);
2203 /* Terminate immediately. */
2210 * Parse an .undef directive.
2213 parse_undef(Parser *parser __unused, char *line, int code __unused, int lineno __unused)
2217 while (isspace((u_char)*line))
2220 for (cp = line; !isspace((u_char)*cp) && *cp != '\0'; cp++) {
2225 cp = Buf_Peel(Var_Subst(line, VAR_CMD, false));
2226 Var_Delete(cp, VAR_GLOBAL);
2232 * Parse an .makeenv directive.
2235 parse_makeenv(Parser *parser __unused, char *line, int code __unused, int lineno __unused)
2239 while (isspace((u_char)*line))
2242 for (cp = line; !isspace((u_char)*cp) && *cp != '\0'; cp++) {
2247 cp = Buf_Peel(Var_Subst(line, VAR_CMD, false));
2248 Var_SetEnv(cp, VAR_GLOBAL);
2254 * Parse a .for directive.
2257 parse_for(Parser *parser __unused, char *line, int code __unused, int lineno)
2260 if (!For_For(line)) {
2267 * Skip after the matching endfor.
2271 line = ParseSkipLine(0, 1);
2273 Parse_Error(PARSE_FATAL,
2274 "Unexpected end of file in for loop.\n");
2277 } while (For_Eval(line));
2286 * Parse endfor. This may only happen if there was no matching .for.
2289 parse_endfor(Parser *parser __unused, char *line __unused, int code __unused, int lineno __unused)
2292 Parse_Error(PARSE_FATAL, "for-less endfor");
2297 * Got a line starting with a '.'. Check if this is a directive
2301 * true if line was a directive, false otherwise.
2304 parse_directive(Parser *parser, char *line)
2312 * .[[:space:]]*\([[:alpha:]][[:alnum:]_]*\).*
2313 * \1 is the keyword.
2315 for (start = line; isspace((u_char)*start); start++) {
2319 if (!isalpha((u_char)*start)) {
2324 while (isalnum((u_char)*cp) || *cp == '_') {
2328 dir = directive_hash((const unsigned char *)start, cp - start);
2329 if (dir < 0 || dir >= (int)NDIRECTS ||
2330 (size_t)(cp - start) != strlen(directives[dir].name) ||
2331 strncmp(start, directives[dir].name, cp - start) != 0) {
2332 /* not actually matched */
2336 if (!skipLine || directives[dir].skip_flag)
2337 (*directives[dir].func)(parser, cp, directives[dir].code,
2343 * Parse a file into its component parts, incorporating it into the
2344 * current dependency graph. This is the main function and controls
2345 * almost every other function in this module
2351 * Loads. Nodes are added to the list of all targets, nodes and links
2352 * are added to the dependency graph. etc. etc. etc.
2355 Parse_File(Parser *parser, struct CLI *cli, const char name[], FILE *stream)
2357 char *cp; /* pointer into the line */
2358 char *line; /* the line we're working on */
2363 ParsePushInput(estrdup(name), stream, NULL, 0);
2365 while ((line = ParseReadLine()) != NULL) {
2366 if (*line == '.' && parse_directive(parser, line + 1)) {
2367 /* directive consumed */
2370 if (skipLine || *line == '#') {
2371 /* Skipping .if block or comment. */
2375 if (*line == '\t') {
2377 * If a line starts with a tab, it can only
2378 * hope to be a creation command.
2380 for (cp = line + 1; isspace((unsigned char)*cp); cp++) {
2389 * So long as it's not a blank
2390 * line and we're actually in a
2391 * dependency spec, add the
2392 * command to the list of
2393 * commands of all targets in
2394 * the dependency spec.
2396 LST_FOREACH(ln, &targets) {
2404 if (!(gn->type & OP_HAS_COMMANDS))
2405 Lst_AtEnd(&gn->commands, cp);
2407 Parse_Error(PARSE_WARNING, "duplicate script "
2408 "for target \"%s\" ignored", gn->name);
2412 Parse_Error(PARSE_FATAL,
2413 "Unassociated shell command \"%s\"",
2418 } else if (strncmp(line, "include", 7) == 0 &&
2419 isspace((unsigned char)line[7]) &&
2420 strchr(line, ':') == NULL) {
2422 * It's an S3/S5-style "include".
2424 ParseTraditionalInclude(parser, line + 7);
2427 } else if (Parse_IsVar(line)) {
2429 Parse_DoVar(line, VAR_GLOBAL);
2433 * We now know it's a dependency line so it
2434 * needs to have all variables expanded before
2435 * being parsed. Tell the variable module to
2436 * complain if some variable is undefined...
2437 * To make life easier on novices, if the line
2438 * is indented we first make sure the line has
2439 * a dependency operator in it. If it doesn't
2440 * have an operator and we're in a dependency
2441 * line's script, we assume it's actually a
2442 * shell command and add it to the current
2443 * list of targets. XXX this comment seems wrong.
2446 if (isspace((unsigned char)line[0])) {
2447 while (*cp != '\0' &&
2448 isspace((unsigned char)*cp)) {
2458 cp = Buf_Peel(Var_Subst(line, VAR_CMD, true));
2464 * Need a non-circular list for the target nodes
2466 Lst_Destroy(&targets, NOFREE);
2469 ParseDoDependency(parser, cli, line);
2479 * Make sure conditionals are clean
2481 Cond_End(parser, NULL, 0, 0);
2484 errx(1, "fatal errors encountered -- cannot continue");
2488 *-----------------------------------------------------------------------
2490 * Return a Lst of the main target to create for main()'s sake. If
2491 * no such target exists, we Punt with an obnoxious error message.
2494 * A Lst of the single node to create.
2499 *-----------------------------------------------------------------------
2502 Parse_MainName(Lst *listmain)
2505 if (mainNode == NULL) {
2506 Punt("no target to make.");
2508 } else if (mainNode->type & OP_DOUBLEDEP) {
2509 Lst_AtEnd(listmain, mainNode);
2510 Lst_Concat(listmain, &mainNode->cohorts, LST_CONCNEW);
2512 Lst_AtEnd(listmain, mainNode);