File: [local] / src / usr.bin / make / parse.c (download)
Revision 1.58, Fri Nov 24 14:27:20 2000 UTC (23 years, 6 months ago) by espie
Branch: MAIN
CVS Tags: OPENBSD_2_9_BASE, OPENBSD_2_9
Changes since 1.57: +3 -3 lines
Clean-ups:
* Buf_Destroy can be a macro
* X_ instead of _X for struct names, to avoid infringing on the system's
namespace.
* better wildcard detection heuristics
* fix #ifdef CLEANUP code
* a few comments
|
/* $OpenBSD: parse.c,v 1.58 2000/11/24 14:27:20 espie Exp $ */
/* $NetBSD: parse.c,v 1.29 1997/03/10 21:20:04 christos Exp $ */
/*
* Copyright (c) 1988, 1989, 1990, 1993
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1989 by Berkeley Softworks
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Adam de Boor.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*-
* parse.c --
* Functions to parse a makefile.
*
* One function, Parse_Init, must be called before any functions
* in this module are used. After that, the function Parse_File is the
* main entry point and controls most of the other functions in this
* module.
*
* Most important structures are kept in Lsts. Directories for
* the #include "..." function are kept in the 'parseIncPath' Lst, while
* those for the #include <...> are kept in the 'sysIncPath' Lst. The
* targets currently being defined are kept in the 'targets' Lst.
*
* The variables 'fname' and 'lineno' are used to track the name
* of the current file and the line number in that file so that error
* messages can be more meaningful.
*
* Interface:
* Parse_Init Initialization function which must be
* called before anything else in this module
* is used.
*
* Parse_End Cleanup the module
*
* Parse_File Function used to parse a makefile. It must
* be given the name of the file, which should
* already have been opened, and a function
* to call to read a character from the file.
*
* Parse_IsVar Returns TRUE if the given line is a
* variable assignment. Used by MainParseArgs
* to determine if an argument is a target
* or a variable assignment. Used internally
* for pretty much the same thing...
*
* Parse_Error Function called when an error occurs in
* parsing. Used by the variable and
* conditional modules.
* Parse_MainName Returns a Lst of the main target to create.
*/
#ifdef __STDC__
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#include <stddef.h>
#include <stdio.h>
#include <ctype.h>
#include <errno.h>
#include "make.h"
#include "ohash.h"
#include "dir.h"
#include "job.h"
#include "buf.h"
#include "pathnames.h"
#include "lowparse.h"
#ifndef lint
#if 0
static char sccsid[] = "@(#)parse.c 8.3 (Berkeley) 3/19/94";
#else
UNUSED
static char rcsid[] = "$OpenBSD: parse.c,v 1.58 2000/11/24 14:27:20 espie Exp $";
#endif
#endif /* not lint */
static LIST targets; /* targets we're working on */
#ifdef CLEANUP
static LIST targCmds; /* command lines for targets */
#endif
static Boolean inLine; /* true if currently in a dependency
* line or its commands */
static GNode *mainNode; /* The main target to create. This is the
* first target on the first dependency
* line in the first makefile */
LIST parseIncPath; /* list of directories for "..." includes */
LIST sysIncPath; /* list of directories for <...> includes */
/*-
* specType contains the SPECial TYPE of the current target. It is
* Not if the target is unspecial. If it *is* special, however, the children
* are linked as children of the parent but not vice versa. This variable is
* set in ParseDoDependency
*/
typedef enum {
Begin, /* .BEGIN */
Default, /* .DEFAULT */
End, /* .END */
Ignore, /* .IGNORE */
Includes, /* .INCLUDES */
Interrupt, /* .INTERRUPT */
Libs, /* .LIBS */
MFlags, /* .MFLAGS or .MAKEFLAGS */
Main, /* .MAIN and we don't have anything user-specified to
* make */
NoExport, /* .NOEXPORT */
NoPath, /* .NOPATH */
Not, /* Not special */
NotParallel, /* .NOTPARALELL */
Null, /* .NULL */
Order, /* .ORDER */
Parallel, /* .PARALLEL */
ExPath, /* .PATH */
Phony, /* .PHONY */
Precious, /* .PRECIOUS */
ExShell, /* .SHELL */
Silent, /* .SILENT */
SingleShell, /* .SINGLESHELL */
Suffixes, /* .SUFFIXES */
Wait, /* .WAIT */
Attribute /* Generic attribute */
} ParseSpecial;
static ParseSpecial specType;
static int waiting;
/*
* Predecessor node for handling .ORDER. Initialized to NULL when .ORDER
* seen, then set to each successive source on the line.
*/
static GNode *predecessor;
/*
* The parseKeywords table is searched using binary search when deciding
* if a target or source is special. The 'spec' field is the ParseSpecial
* type of the keyword ("Not" if the keyword isn't special as a target) while
* the 'op' field is the operator to apply to the list of targets if the
* keyword is used as a source ("0" if the keyword isn't special as a source)
*/
static struct {
char *name; /* Name of keyword */
ParseSpecial spec; /* Type when used as a target */
int op; /* Operator when used as a source */
} parseKeywords[] = {
{ ".BEGIN", Begin, 0 },
{ ".DEFAULT", Default, 0 },
{ ".END", End, 0 },
{ ".EXEC", Attribute, OP_EXEC },
{ ".IGNORE", Ignore, OP_IGNORE },
{ ".INCLUDES", Includes, 0 },
{ ".INTERRUPT", Interrupt, 0 },
{ ".INVISIBLE", Attribute, OP_INVISIBLE },
{ ".JOIN", Attribute, OP_JOIN },
{ ".LIBS", Libs, 0 },
{ ".MADE", Attribute, OP_MADE },
{ ".MAIN", Main, 0 },
{ ".MAKE", Attribute, OP_MAKE },
{ ".MAKEFLAGS", MFlags, 0 },
{ ".MFLAGS", MFlags, 0 },
#if 0 /* basic scaffolding for NOPATH, not working yet */
{ ".NOPATH", NoPath, OP_NOPATH },
#endif
{ ".NOTMAIN", Attribute, OP_NOTMAIN },
{ ".NOTPARALLEL", NotParallel, 0 },
{ ".NO_PARALLEL", NotParallel, 0 },
{ ".NULL", Null, 0 },
{ ".OPTIONAL", Attribute, OP_OPTIONAL },
{ ".ORDER", Order, 0 },
{ ".PARALLEL", Parallel, 0 },
{ ".PATH", ExPath, 0 },
{ ".PHONY", Phony, OP_PHONY },
{ ".PRECIOUS", Precious, OP_PRECIOUS },
{ ".RECURSIVE", Attribute, OP_MAKE },
{ ".SHELL", ExShell, 0 },
{ ".SILENT", Silent, OP_SILENT },
{ ".SINGLESHELL", SingleShell, 0 },
{ ".SUFFIXES", Suffixes, 0 },
{ ".USE", Attribute, OP_USE },
{ ".WAIT", Wait, 0 },
};
static int ParseFindKeyword __P((char *));
static void ParseLinkSrc __P((void *, void *));
static int ParseDoOp __P((void *, void *));
static int ParseAddDep __P((void *, void *));
static void ParseDoSrc __P((int, char *, Lst));
static int ParseFindMain __P((void *, void *));
static void ParseAddDir __P((void *, void *));
static void ParseClearPath __P((void *));
static void ParseDoDependency __P((char *));
static void ParseAddCmd __P((void *, void *));
static void ParseHasCommands __P((void *));
static void ParseDoInclude __P((char *));
#ifdef SYSVINCLUDE
static void ParseTraditionalInclude __P((char *));
#endif
static void ParseLookupIncludeFile __P((char *, char *, Boolean));
static void ParseFinishLine __P((void));
/*-
*----------------------------------------------------------------------
* ParseFindKeyword --
* Look in the table of keywords for one matching the given string.
*
* Results:
* The index of the keyword, or -1 if it isn't there.
*
* Side Effects:
* None
*----------------------------------------------------------------------
*/
static int
ParseFindKeyword (str)
char *str; /* String to find */
{
register int start,
end,
cur;
register int diff;
start = 0;
end = (sizeof(parseKeywords)/sizeof(parseKeywords[0])) - 1;
do {
cur = start + ((end - start) / 2);
diff = strcmp (str, parseKeywords[cur].name);
if (diff == 0) {
return (cur);
} else if (diff < 0) {
end = cur - 1;
} else {
start = cur + 1;
}
} while (start <= end);
return (-1);
}
/*-
*---------------------------------------------------------------------
* ParseLinkSrc --
* Link the parent node to its new child. Used in a Lst_ForEach by
* ParseDoDependency. If the specType isn't 'Not', the parent
* isn't linked as a parent of the child.
*
* Side Effects:
* New elements are added to the parents list of cgn and the
* children list of cgn. the unmade field of pgn is updated
* to reflect the additional child.
*---------------------------------------------------------------------
*/
static void
ParseLinkSrc(pgnp, cgnp)
void *pgnp; /* The parent node */
void *cgnp; /* The child node */
{
GNode *pgn = (GNode *)pgnp;
GNode *cgn = (GNode *)cgnp;
if (Lst_Member(&pgn->children, cgn) == NULL) {
Lst_AtEnd(&pgn->children, cgn);
if (specType == Not)
Lst_AtEnd(&cgn->parents, pgn);
pgn->unmade += 1;
}
}
/*-
*---------------------------------------------------------------------
* ParseDoOp --
* Apply the parsed operator to the given target node. Used in a
* Lst_Find call by ParseDoDependency once all targets have
* been found and their operator parsed. If the previous and new
* operators are incompatible, a major error is taken.
*
* Results:
* 0 if a problem, 1 if ok.
*
* Side Effects:
* The type field of the node is altered to reflect any new bits in
* the op.
*---------------------------------------------------------------------
*/
static int
ParseDoOp (gnp, opp)
void *gnp; /* The node to which the operator is to be
* applied */
void *opp; /* The operator to apply */
{
GNode *gn = (GNode *) gnp;
int op = *(int *) opp;
/*
* If the dependency mask of the operator and the node don't match and
* the node has actually had an operator applied to it before, and
* the operator actually has some dependency information in it, complain.
*/
if (((op & OP_OPMASK) != (gn->type & OP_OPMASK)) &&
!OP_NOP(gn->type) && !OP_NOP(op)) {
Parse_Error(PARSE_FATAL, "Inconsistent operator for %s", gn->name);
return 0;
}
if ((op == OP_DOUBLEDEP) && ((gn->type & OP_OPMASK) == OP_DOUBLEDEP)) {
/*
* If the node was the object of a :: operator, we need to create a
* new instance of it for the children and commands on this dependency
* line. The new instance is placed on the 'cohorts' list of the
* initial one (note the initial one is not on its own cohorts list)
* and the new instance is linked to all parents of the initial
* instance.
*/
register GNode *cohort;
LstNode ln;
cohort = Targ_NewGN(gn->name, NULL);
/*
* Duplicate links to parents so graph traversal is simple. Perhaps
* some type bits should be duplicated?
*
* Make the cohort invisible as well to avoid duplicating it into
* other variables. True, parents of this target won't tend to do
* anything with their local variables, but better safe than
* sorry.
*/
Lst_ForEach(&gn->parents, ParseLinkSrc, cohort);
cohort->type = OP_DOUBLEDEP|OP_INVISIBLE;
Lst_AtEnd(&gn->cohorts, cohort);
/*
* Replace the node in the targets list with the new copy
*/
ln = Lst_Member(&targets, gn);
Lst_Replace(ln, cohort);
gn = cohort;
}
/*
* We don't want to nuke any previous flags (whatever they were) so we
* just OR the new operator into the old
*/
gn->type |= op;
return 1;
}
/*-
*---------------------------------------------------------------------
* ParseAddDep --
* Check if the pair of GNodes given needs to be synchronized.
* This has to be when two nodes are on different sides of a
* .WAIT directive.
*
* Results:
* Returns 0 if the two targets need to be ordered, 1 otherwise.
* If it returns 0, the search can stop
*
* Side Effects:
* A dependency can be added between the two nodes.
*
*---------------------------------------------------------------------
*/
static int
ParseAddDep(pp, sp)
void *pp;
void *sp;
{
GNode *p = (GNode *) pp;
GNode *s = (GNode *) sp;
if (p->order < s->order) {
/*
* XXX: This can cause loops, and loops can cause unmade targets,
* but checking is tedious, and the debugging output can show the
* problem
*/
Lst_AtEnd(&p->successors, s);
Lst_AtEnd(&s->preds, p);
return 1;
}
else
return 0;
}
/*-
*---------------------------------------------------------------------
* ParseDoSrc --
* Given the name of a source, figure out if it is an attribute
* and apply it to the targets if it is. Else decide if there is
* some attribute which should be applied *to* the source because
* of some special target and apply it if so. Otherwise, make the
* source be a child of the targets in the list 'targets'
*
* Results:
* None
*
* Side Effects:
* Operator bits may be added to the list of targets or to the source.
* The targets may have a new source added to their lists of children.
*---------------------------------------------------------------------
*/
static void
ParseDoSrc (tOp, src, allsrc)
int tOp; /* operator (if any) from special targets */
char *src; /* name of the source to handle */
Lst allsrc; /* List of all sources to wait for */
{
GNode *gn = NULL;
if (*src == '.' && isupper (src[1])) {
int keywd = ParseFindKeyword(src);
if (keywd != -1) {
int op = parseKeywords[keywd].op;
if (op != 0) {
Lst_Find(&targets, ParseDoOp, &op);
return;
}
if (parseKeywords[keywd].spec == Wait) {
waiting++;
return;
}
}
}
switch (specType) {
case Main:
/*
* If we have noted the existence of a .MAIN, it means we need
* to add the sources of said target to the list of things
* to create. The string 'src' is likely to be free, so we
* must make a new copy of it. Note that this will only be
* invoked if the user didn't specify a target on the command
* line. This is to allow #ifmake's to succeed, or something...
*/
Lst_AtEnd(&create, estrdup(src));
/*
* Add the name to the .TARGETS variable as well, so the user cna
* employ that, if desired.
*/
Var_Append(".TARGETS", src, VAR_GLOBAL);
return;
case Order:
/*
* Create proper predecessor/successor links between the previous
* source and the current one.
*/
gn = Targ_FindNode(src, TARG_CREATE);
if (predecessor != NULL) {
Lst_AtEnd(&predecessor->successors, gn);
Lst_AtEnd(&gn->preds, predecessor);
}
/*
* The current source now becomes the predecessor for the next one.
*/
predecessor = gn;
break;
default:
/*
* If the source is not an attribute, we need to find/create
* a node for it. After that we can apply any operator to it
* from a special target or link it to its parents, as
* appropriate.
*
* In the case of a source that was the object of a :: operator,
* the attribute is applied to all of its instances (as kept in
* the 'cohorts' list of the node) or all the cohorts are linked
* to all the targets.
*/
gn = Targ_FindNode (src, TARG_CREATE);
if (tOp) {
gn->type |= tOp;
} else {
Lst_ForEach(&targets, ParseLinkSrc, gn);
}
if ((gn->type & OP_OPMASK) == OP_DOUBLEDEP) {
register GNode *cohort;
register LstNode ln;
for (ln=Lst_First(&gn->cohorts); ln != NULL; ln = Lst_Adv(ln)){
cohort = (GNode *)Lst_Datum(ln);
if (tOp) {
cohort->type |= tOp;
} else {
Lst_ForEach(&targets, ParseLinkSrc, cohort);
}
}
}
break;
}
gn->order = waiting;
Lst_AtEnd(allsrc, gn);
if (waiting)
Lst_Find(allsrc, ParseAddDep, gn);
}
/*-
*-----------------------------------------------------------------------
* ParseFindMain --
* Find a real target in the list and set it to be the main one.
* Called by ParseDoDependency when a main target hasn't been found
* yet.
*
* Results:
* 1 if main not found yet, 0 if it is.
*
* Side Effects:
* mainNode is changed and Targ_SetMain is called.
*
*-----------------------------------------------------------------------
*/
static int
ParseFindMain(gnp, dummy)
void *gnp; /* Node to examine */
void *dummy UNUSED;
{
GNode *gn = (GNode *) gnp;
if ((gn->type & OP_NOTARGET) == 0) {
mainNode = gn;
Targ_SetMain(gn);
return 0;
} else
return 1;
}
/*-
*-----------------------------------------------------------------------
* ParseAddDir --
* Front-end for Dir_AddDir to make sure Lst_ForEach keeps going
*
* Side Effects:
* See Dir_AddDir.
*
*-----------------------------------------------------------------------
*/
static void
ParseAddDir(path, name)
void *path;
void *name;
{
Dir_AddDir((Lst)path, (char *)name, NULL);
}
/*-
*-----------------------------------------------------------------------
* ParseClearPath --
* Front-end for Dir_ClearPath to make sure Lst_ForEach keeps going
*
* Side Effects:
* See Dir_ClearPath
*
*-----------------------------------------------------------------------
*/
static void
ParseClearPath(path)
void *path;
{
Dir_ClearPath((Lst)path);
}
/*-
*---------------------------------------------------------------------
* ParseDoDependency --
* Parse the dependency line in line.
*
* Results:
* None
*
* Side Effects:
* The nodes of the sources are linked as children to the nodes of the
* targets. Some nodes may be created.
*
* We parse a dependency line by first extracting words from the line and
* finding nodes in the list of all targets with that name. This is done
* until a character is encountered which is an operator character. Currently
* these are only ! and :. At this point the operator is parsed and the
* pointer into the line advanced until the first source is encountered.
* The parsed operator is applied to each node in the 'targets' list,
* which is where the nodes found for the targets are kept, by means of
* the ParseDoOp function.
* The sources are read in much the same way as the targets were except
* that now they are expanded using the wildcarding scheme of the C-Shell
* and all instances of the resulting words in the list of all targets
* are found. Each of the resulting nodes is then linked to each of the
* targets as one of its children.
* Certain targets are handled specially. These are the ones detailed
* by the specType variable.
* The storing of transformation rules is also taken care of here.
* A target is recognized as a transformation rule by calling
* Suff_IsTransform. If it is a transformation rule, its node is gotten
* from the suffix module via Suff_AddTransform rather than the standard
* Targ_FindNode in the target module.
*---------------------------------------------------------------------
*/
static void
ParseDoDependency (line)
char *line; /* the line to parse */
{
char *cp; /* our current position */
GNode *gn; /* a general purpose temporary node */
int op; /* the operator on the line */
char savec; /* a place to save a character */
LIST paths; /* List of search paths to alter when parsing
* a list of .PATH targets */
int tOp; /* operator from special target */
LIST curTargs; /* list of target names to be found and added
* to the targets list */
LIST curSrcs; /* list of sources in order */
tOp = 0;
specType = Not;
waiting = 0;
Lst_Init(&paths);
Lst_Init(&curTargs);
Lst_Init(&curSrcs);
do {
for (cp = line;
*cp && !isspace (*cp) && (*cp != '(');
cp++)
{
/*
* We don't want to end a word on ':' or '!' if there is a
* better match later on in the string. By "better" I mean
* one that is followed by whitespace. This allows the user
* to have targets like:
* fie::fi:fo: fum
* where "fie::fi:fo" is the target. In real life this is used
* for perl5 library man pages where "::" separates an object
* from its class. Ie: "File::Spec::Unix". This behaviour
* is also consistent with other versions of make.
*/
if (*cp == '!' || *cp == ':') {
char *p = cp + 1;
if (*p == '\0')
break; /* no chance, not enough room */
/*
* Only end the word on ':' or '!' if there is not
* a match later on followed by whitespace.
*/
while ((p = strchr(p + 1, *cp)) && !isspace(*(p + 1)))
;
if (!p || !isspace(*(p + 1)))
break;
} else if (*cp == '$') {
/*
* Must be a dynamic source (would have been expanded
* otherwise), so call the Var module to parse the puppy
* so we can safely advance beyond it...There should be
* no errors in this, as they would have been discovered
* in the initial Var_Subst and we wouldn't be here.
*/
size_t length;
Boolean freeIt;
char *result;
result=Var_Parse(cp, NULL, TRUE, &length, &freeIt);
if (freeIt) {
free(result);
}
cp += length-1;
}
continue;
}
if (*cp == '(') {
/*
* Archives must be handled specially to make sure the OP_ARCHV
* flag is set in their 'type' field, for one thing, and because
* things like "archive(file1.o file2.o file3.o)" are permissible.
* Arch_ParseArchive will set 'line' to be the first non-blank
* after the archive-spec. It creates/finds nodes for the members
* and places them on the given list, returning SUCCESS if all
* went well and FAILURE if there was an error in the
* specification. On error, line should remain untouched.
*/
if (Arch_ParseArchive(&line, &targets, NULL) != SUCCESS) {
Parse_Error (PARSE_FATAL,
"Error in archive specification: \"%s\"", line);
return;
} else {
continue;
}
}
savec = *cp;
if (!*cp) {
/*
* Ending a dependency line without an operator is a Bozo
* no-no
*/
Parse_Error (PARSE_FATAL, "Need an operator");
return;
}
*cp = '\0';
/*
* Have a word in line. See if it's a special target and set
* specType to match it.
*/
if (*line == '.' && isupper (line[1])) {
/*
* See if the target is a special target that must have it
* or its sources handled specially.
*/
int keywd = ParseFindKeyword(line);
if (keywd != -1) {
if (specType == ExPath && parseKeywords[keywd].spec != ExPath) {
Parse_Error(PARSE_FATAL, "Mismatched special targets");
return;
}
specType = parseKeywords[keywd].spec;
tOp = parseKeywords[keywd].op;
/*
* Certain special targets have special semantics:
* .PATH Have to set the dirSearchPath
* variable too
* .MAIN Its sources are only used if
* nothing has been specified to
* create.
* .DEFAULT Need to create a node to hang
* commands on, but we don't want
* it in the graph, nor do we want
* it to be the Main Target, so we
* create it, set OP_NOTMAIN and
* add it to the list, setting
* DEFAULT to the new node for
* later use. We claim the node is
* A transformation rule to make
* life easier later, when we'll
* use Make_HandleUse to actually
* apply the .DEFAULT commands.
* .PHONY The list of targets
* .NOPATH Don't search for file in the path
* .BEGIN
* .END
* .INTERRUPT Are not to be considered the
* main target.
* .NOTPARALLEL Make only one target at a time.
* .SINGLESHELL Create a shell for each command.
* .ORDER Must set initial predecessor to NULL
*/
switch (specType) {
case ExPath:
Lst_AtEnd(&paths, &dirSearchPath);
break;
case Main:
if (!Lst_IsEmpty(&create)) {
specType = Not;
}
break;
case Begin:
case End:
case Interrupt:
gn = Targ_FindNode(line, TARG_CREATE);
gn->type |= OP_NOTMAIN;
Lst_AtEnd(&targets, gn);
break;
case Default:
gn = Targ_NewGN(".DEFAULT", NULL);
gn->type |= (OP_NOTMAIN|OP_TRANSFORM);
Lst_AtEnd(&targets, gn);
DEFAULT = gn;
break;
case NotParallel:
{
extern int maxJobs;
maxJobs = 1;
break;
}
case SingleShell:
compatMake = 1;
break;
case Order:
predecessor = NULL;
break;
default:
break;
}
} else if (strncmp (line, ".PATH", 5) == 0) {
/*
* .PATH<suffix> has to be handled specially.
* Call on the suffix module to give us a path to
* modify.
*/
Lst path;
specType = ExPath;
path = Suff_GetPath(&line[5]);
if (path == NULL) {
Parse_Error(PARSE_FATAL,
"Suffix '%s' not defined (yet)",
&line[5]);
return;
} else
Lst_AtEnd(&paths, path);
}
}
/*
* Have word in line. Get or create its node and stick it at
* the end of the targets list
*/
if ((specType == Not) && (*line != '\0')) {
char *targName;
if (Dir_HasWildcards(line)) {
/*
* Targets are to be sought only in the current directory,
* so create an empty path for the thing. Note we need to
* use Dir_Destroy in the destruction of the path as the
* Dir module could have added a directory to the path...
*/
LIST emptyPath;
Lst_Init(&emptyPath);
Dir_Expand(line, &emptyPath, &curTargs);
Lst_Destroy(&emptyPath, Dir_Destroy);
} else {
/*
* No wildcards, but we want to avoid code duplication,
* so create a list with the word on it.
*/
Lst_AtEnd(&curTargs, line);
}
while((targName = (char *)Lst_DeQueue(&curTargs)) != NULL) {
if (!Suff_IsTransform (targName)) {
gn = Targ_FindNode (targName, TARG_CREATE);
} else {
gn = Suff_AddTransform (targName);
}
if (gn != NULL)
Lst_AtEnd(&targets, gn);
}
} else if (specType == ExPath && *line != '.' && *line != '\0') {
Parse_Error(PARSE_WARNING, "Extra target (%s) ignored", line);
}
*cp = savec;
/*
* If it is a special type and not .PATH, it's the only target we
* allow on this line...
*/
if (specType != Not && specType != ExPath) {
Boolean warn = FALSE;
while ((*cp != '!') && (*cp != ':') && *cp) {
if (*cp != ' ' && *cp != '\t') {
warn = TRUE;
}
cp++;
}
if (warn) {
Parse_Error(PARSE_WARNING, "Extra target ignored");
}
} else {
while (*cp && isspace (*cp)) {
cp++;
}
}
line = cp;
} while ((*line != '!') && (*line != ':') && *line);
/* Don't need the list of target names any more */
Lst_Destroy(&curTargs, NOFREE);
if (!Lst_IsEmpty(&targets)) {
switch(specType) {
default:
Parse_Error(PARSE_WARNING, "Special and mundane targets don't mix. Mundane ones ignored");
break;
case Default:
case Begin:
case End:
case Interrupt:
/*
* These four create nodes on which to hang commands, so
* targets shouldn't be empty...
*/
case Not:
/*
* Nothing special here -- targets can be empty if it wants.
*/
break;
}
}
/*
* Have now parsed all the target names. Must parse the operator next. The
* result is left in op .
*/
if (*cp == '!') {
op = OP_FORCE;
} else if (*cp == ':') {
if (cp[1] == ':') {
op = OP_DOUBLEDEP;
cp++;
} else {
op = OP_DEPENDS;
}
} else {
Parse_Error (PARSE_FATAL, "Missing dependency operator");
return;
}
cp++; /* Advance beyond operator */
Lst_Find(&targets, ParseDoOp, &op);
/*
* Get to the first source
*/
while (*cp && isspace (*cp)) {
cp++;
}
line = cp;
/*
* Several special targets take different actions if present with no
* sources:
* a .SUFFIXES line with no sources clears out all old suffixes
* a .PRECIOUS line makes all targets precious
* a .IGNORE line ignores errors for all targets
* a .SILENT line creates silence when making all targets
* a .PATH removes all directories from the search path(s).
*/
if (!*line) {
switch (specType) {
case Suffixes:
Suff_ClearSuffixes ();
break;
case Precious:
allPrecious = TRUE;
break;
case Ignore:
ignoreErrors = TRUE;
break;
case Silent:
beSilent = TRUE;
break;
case ExPath:
Lst_Every(&paths, ParseClearPath);
break;
default:
break;
}
} else if (specType == MFlags) {
/*
* Call on functions in main.c to deal with these arguments and
* set the initial character to a null-character so the loop to
* get sources won't get anything
*/
Main_ParseArgLine (line);
*line = '\0';
} else if (specType == ExShell) {
if (Job_ParseShell (line) != SUCCESS) {
Parse_Error (PARSE_FATAL, "improper shell specification");
return;
}
*line = '\0';
} else if ((specType == NotParallel) || (specType == SingleShell)) {
*line = '\0';
}
/*
* NOW GO FOR THE SOURCES
*/
if ((specType == Suffixes) || (specType == ExPath) ||
(specType == Includes) || (specType == Libs) ||
(specType == Null))
{
while (*line) {
/*
* If the target was one that doesn't take files as its sources
* but takes something like suffixes, we take each
* space-separated word on the line as a something and deal
* with it accordingly.
*
* If the target was .SUFFIXES, we take each source as a
* suffix and add it to the list of suffixes maintained by the
* Suff module.
*
* If the target was a .PATH, we add the source as a directory
* to search on the search path.
*
* If it was .INCLUDES, the source is taken to be the suffix of
* files which will be #included and whose search path should
* be present in the .INCLUDES variable.
*
* If it was .LIBS, the source is taken to be the suffix of
* files which are considered libraries and whose search path
* should be present in the .LIBS variable.
*
* If it was .NULL, the source is the suffix to use when a file
* has no valid suffix.
*/
char savec;
while (*cp && !isspace (*cp)) {
cp++;
}
savec = *cp;
*cp = '\0';
switch (specType) {
case Suffixes:
Suff_AddSuffix (line);
break;
case ExPath:
Lst_ForEach(&paths, ParseAddDir, line);
break;
case Includes:
Suff_AddInclude (line);
break;
case Libs:
Suff_AddLib (line);
break;
case Null:
Suff_SetNull (line);
break;
default:
break;
}
*cp = savec;
if (savec != '\0') {
cp++;
}
while (*cp && isspace (*cp)) {
cp++;
}
line = cp;
}
Lst_Destroy(&paths, NOFREE);
} else {
while (*line) {
/*
* The targets take real sources, so we must beware of archive
* specifications (i.e. things with left parentheses in them)
* and handle them accordingly.
*/
while (*cp && !isspace (*cp)) {
if ((*cp == '(') && (cp > line) && (cp[-1] != '$')) {
/*
* Only stop for a left parenthesis if it isn't at the
* start of a word (that'll be for variable changes
* later) and isn't preceded by a dollar sign (a dynamic
* source).
*/
break;
} else {
cp++;
}
}
if (*cp == '(') {
GNode *gn;
LIST sources; /* list of archive source names after
* expansion */
Lst_Init(&sources);
if (Arch_ParseArchive(&line, &sources, NULL) != SUCCESS) {
Parse_Error (PARSE_FATAL,
"Error in source archive spec \"%s\"", line);
return;
}
while ((gn = (GNode *)Lst_DeQueue(&sources)) != NULL)
ParseDoSrc(tOp, gn->name, &curSrcs);
Lst_Destroy(&sources, NOFREE);
cp = line;
} else {
if (*cp) {
*cp = '\0';
cp += 1;
}
ParseDoSrc(tOp, line, &curSrcs);
}
while (*cp && isspace (*cp)) {
cp++;
}
line = cp;
}
}
if (mainNode == NULL) {
/*
* If we have yet to decide on a main target to make, in the
* absence of any user input, we want the first target on
* the first dependency line that is actually a real target
* (i.e. isn't a .USE or .EXEC rule) to be made.
*/
Lst_Find(&targets, ParseFindMain, NULL);
}
/* Finally, destroy the list of sources. */
Lst_Destroy(&curSrcs, NOFREE);
}
/*-
*---------------------------------------------------------------------
* Parse_IsVar --
* Return TRUE if the passed line is a variable assignment. A variable
* assignment consists of a single word followed by optional whitespace
* followed by either a += or an = operator.
* This function is used both by the Parse_File function and main when
* parsing the command-line arguments.
*
* Results:
* TRUE if it is. FALSE if it ain't
*
* Side Effects:
* none
*---------------------------------------------------------------------
*/
Boolean
Parse_IsVar (line)
register char *line; /* the line to check */
{
register Boolean wasSpace = FALSE; /* set TRUE if found a space */
register Boolean haveName = FALSE; /* Set TRUE if have a variable name */
int level = 0;
#define ISEQOPERATOR(c) \
(((c) == '+') || ((c) == ':') || ((c) == '?') || ((c) == '!'))
/*
* Skip to variable name
*/
for (;(*line == ' ') || (*line == '\t'); line++)
continue;
for (; *line != '=' || level != 0; line++)
switch (*line) {
case '\0':
/*
* end-of-line -- can't be a variable assignment.
*/
return FALSE;
case ' ':
case '\t':
/*
* there can be as much white space as desired so long as there is
* only one word before the operator
*/
wasSpace = TRUE;
break;
case '(':
case '{':
level++;
break;
case '}':
case ')':
level--;
break;
default:
if (wasSpace && haveName) {
if (ISEQOPERATOR(*line)) {
/*
* We must have a finished word
*/
if (level != 0)
return FALSE;
/*
* When an = operator [+?!:] is found, the next
* character must be an = or it ain't a valid
* assignment.
*/
if (line[1] == '=')
return haveName;
#ifdef SUNSHCMD
/*
* This is a shell command
*/
if (strncmp(line, ":sh", 3) == 0)
return haveName;
#endif
}
/*
* This is the start of another word, so not assignment.
*/
return FALSE;
}
else {
haveName = TRUE;
wasSpace = FALSE;
}
break;
}
return haveName;
}
/*-
*---------------------------------------------------------------------
* Parse_DoVar --
* Take the variable assignment in the passed line and do it in the
* global context.
*
* Note: There is a lexical ambiguity with assignment modifier characters
* in variable names. This routine interprets the character before the =
* as a modifier. Therefore, an assignment like
* C++=/usr/bin/CC
* is interpreted as "C+ +=" instead of "C++ =".
*
* Results:
* none
*
* Side Effects:
* the variable structure of the given variable name is altered in the
* global context.
*---------------------------------------------------------------------
*/
void
Parse_DoVar (line, ctxt)
char *line; /* a line guaranteed to be a variable
* assignment. This reduces error checks */
GSymT *ctxt; /* Context in which to do the assignment */
{
char *cp; /* pointer into line */
enum {
VAR_SUBST, VAR_APPEND, VAR_SHELL, VAR_NORMAL
} type; /* Type of assignment */
char *opc; /* ptr to operator character to
* null-terminate the variable name */
/*
* Avoid clobbered variable warnings by forcing the compiler
* to ``unregister'' variables
*/
#if __GNUC__
(void) &cp;
(void) &line;
#endif
/*
* Skip to variable name
*/
while ((*line == ' ') || (*line == '\t')) {
line++;
}
/*
* Skip to operator character, nulling out whitespace as we go
*/
for (cp = line + 1; *cp != '='; cp++) {
if (isspace (*cp)) {
*cp = '\0';
}
}
opc = cp-1; /* operator is the previous character */
*cp++ = '\0'; /* nuke the = */
/*
* Check operator type
*/
switch (*opc) {
case '+':
type = VAR_APPEND;
*opc = '\0';
break;
case '?':
/*
* If the variable already has a value, we don't do anything.
*/
*opc = '\0';
if (Var_Exists(line, ctxt)) {
return;
} else {
type = VAR_NORMAL;
}
break;
case ':':
type = VAR_SUBST;
*opc = '\0';
break;
case '!':
type = VAR_SHELL;
*opc = '\0';
break;
default:
#ifdef SUNSHCMD
while (*opc != ':')
if (--opc < line)
break;
if (strncmp(opc, ":sh", 3) == 0) {
type = VAR_SHELL;
*opc = '\0';
break;
}
#endif
type = VAR_NORMAL;
break;
}
while (isspace (*cp)) {
cp++;
}
if (type == VAR_APPEND) {
Var_Append (line, cp, ctxt);
} else if (type == VAR_SUBST) {
/*
* Allow variables in the old value to be undefined, but leave their
* invocation alone -- this is done by forcing oldVars to be false.
* XXX: This can cause recursive variables, but that's not hard to do,
* and this allows someone to do something like
*
* CFLAGS = $(.INCLUDES)
* CFLAGS := -I.. $(CFLAGS)
*
* And not get an error.
*/
Boolean oldOldVars = oldVars;
oldVars = FALSE;
cp = Var_Subst(cp, (SymTable *)ctxt, FALSE);
oldVars = oldOldVars;
Var_Set(line, cp, ctxt);
free(cp);
} else if (type == VAR_SHELL) {
Boolean freeCmd = FALSE; /* TRUE if the command needs to be freed, i.e.
* if any variable expansion was performed */
char *res, *err;
if (strchr(cp, '$') != NULL) {
/*
* There's a dollar sign in the command, so perform variable
* expansion on the whole thing. The resulting string will need
* freeing when we're done, so set freeCmd to TRUE.
*/
cp = Var_Subst(cp, NULL, TRUE);
freeCmd = TRUE;
}
res = Cmd_Exec(cp, &err);
Var_Set(line, res, ctxt);
free(res);
if (err)
Parse_Error(PARSE_WARNING, err, cp);
if (freeCmd)
free(cp);
} else {
/*
* Normal assignment -- just do it.
*/
Var_Set(line, cp, ctxt);
}
}
/*-
* ParseAddCmd --
* Lst_ForEach function to add a command line to all targets
*
* Side Effects:
* A new element is added to the commands list of the node.
*/
static void
ParseAddCmd(gnp, cmd)
void *gnp; /* the node to which the command is to be added */
void *cmd; /* the command to add */
{
GNode *gn = (GNode *)gnp;
/* if target already supplied, ignore commands */
if (!(gn->type & OP_HAS_COMMANDS)) {
Lst_AtEnd(&gn->commands, cmd);
if (!gn->lineno) {
gn->lineno = Parse_Getlineno();
gn->fname = Parse_Getfilename();
}
}
}
/*-
*-----------------------------------------------------------------------
* ParseHasCommands --
* Callback procedure for Parse_File when destroying the list of
* targets on the last dependency line. Marks a target as already
* having commands if it does, to keep from having shell commands
* on multiple dependency lines.
*
* Results:
* None
*
* Side Effects:
* OP_HAS_COMMANDS may be set for the target.
*
*-----------------------------------------------------------------------
*/
static void
ParseHasCommands(gnp)
void *gnp; /* Node to examine */
{
GNode *gn = (GNode *) gnp;
if (!Lst_IsEmpty(&gn->commands)) {
gn->type |= OP_HAS_COMMANDS;
}
}
/*-
*-----------------------------------------------------------------------
* Parse_AddIncludeDir --
* Add a directory to the path searched for included makefiles
* bracketed by double-quotes. Used by functions in main.c
*
* Results:
* None.
*
* Side Effects:
* The directory is appended to the list.
*
*-----------------------------------------------------------------------
*/
void
Parse_AddIncludeDir(dir)
char *dir; /* The name of the directory to add */
{
Dir_AddDir(&parseIncPath, dir, NULL);
}
/*-
*---------------------------------------------------------------------
* ParseDoInclude --
* Push to another file.
*
* The input is the line minus the #include. A file spec is a string
* enclosed in <> or "". The former is looked for only in sysIncPath.
* The latter in . and the directories specified by -I command line
* options
*
* Side Effects:
* old parse context is pushed on the stack, new file becomes
* current context.
*---------------------------------------------------------------------
*/
static void
ParseDoInclude(file)
char *file; /* file specification */
{
char endc; /* the character which ends the file spec */
char *cp; /* current position in file spec */
Boolean isSystem; /* TRUE if makefile is a system makefile */
/* Skip to delimiter character so we know where to look */
while (*file == ' ' || *file == '\t')
file++;
if (*file != '"' && *file != '<') {
Parse_Error (PARSE_FATAL,
".include filename must be delimited by '\"' or '<'");
return;
}
/* Set the search path on which to find the include file based on the
* characters which bracket its name. Angle-brackets imply it's
* a system Makefile while double-quotes imply it's a user makefile */
if (*file == '<') {
isSystem = TRUE;
endc = '>';
} else {
isSystem = FALSE;
endc = '"';
}
/* Skip to matching delimiter */
for (cp = ++file; *cp && *cp != endc; cp++) {
if (*cp == '\0') {
Parse_Error(PARSE_FATAL,
"Unclosed %cinclude filename. '%c' expected",
'.', endc);
return;
}
}
ParseLookupIncludeFile(file, cp, isSystem);
}
#ifdef SYSVINCLUDE
/*-
*---------------------------------------------------------------------
* ParseTraditionalInclude --
* Push to another file.
*
* The input is the line minus the "include". The file name is
* the string following the "include".
*
* Side Effects:
* old parse context is pushed on the stack, new file becomes
* current context.
*---------------------------------------------------------------------
*/
static void
ParseTraditionalInclude(file)
char *file; /* file specification */
{
char *cp; /* current position in file spec */
/* Skip over whitespace */
while (*file == ' ' || *file == '\t')
file++;
if (*file == '\0') {
Parse_Error (PARSE_FATAL,
"Filename missing from \"include\"");
return;
}
/* Skip to end of line or next whitespace */
for (cp = file; *cp != '\0' && !isspace(*cp);)
cp++;
ParseLookupIncludeFile(file, cp, TRUE);
}
#endif
/* Common part to lookup and read an include file. */
static void
ParseLookupIncludeFile(spec, endSpec, isSystem)
char *spec;
char *endSpec;
Boolean isSystem;
{
char *file;
char *fullname;
char endc;
/* Substitute for any variables in the file name before trying to
* find the thing. */
endc = *endSpec;
*endSpec = '\0';
file = Var_Subst(spec, NULL, FALSE);
*endSpec = endc;
/* Now that we know the file name and its search path, we attempt to
* find the durn thing. NULL indicates the file still hasn't been
* found. */
fullname = NULL;
/* Handle non-system non-absolute files... */
if (!isSystem && file[0] != '/') {
/* ... by first searching relative to the including file's
* location. We don't want to cd there, of course, so we
* just tack on the old file's leading path components
* and call Dir_FindFile to see if we can locate the beast. */
char *slash;
slash = strrchr(Parse_Getfilename(), '/');
if (slash != NULL) {
char *base, *newName;
base = interval_dup(Parse_Getfilename(), slash);
newName = str_concat(base, file, '/');
free(base);
fullname = Dir_FindFile(newName, &parseIncPath);
if (fullname == NULL)
fullname = Dir_FindFile(newName, &dirSearchPath);
free(newName);
}
}
/* Now look first on the -I search path, then on the .PATH
* search path, if not found in a -I directory.
* XXX: Suffix specific? */
if (fullname == NULL)
fullname = Dir_FindFile(file, &parseIncPath);
if (fullname == NULL)
fullname = Dir_FindFile(file, &dirSearchPath);
/* Still haven't found the makefile. Look for it on the system
* path as a last resort. */
if (fullname == NULL)
fullname = Dir_FindFile(file, &sysIncPath);
if (fullname == NULL)
Parse_Error(PARSE_FATAL, "Could not find %s", file);
free(file);
if (fullname != NULL) {
FILE *f;
f = fopen(fullname, "r");
if (f == NULL) {
Parse_Error(PARSE_FATAL, "Cannot open %s", fullname);
} else {
/* Once we find the absolute path to the file, we push the current
* stream to the includes stack, and start reading from the new
* file. We set up the file name to be its absolute name so that
* error messages are informative. */
Parse_FromFile(fullname, f);
}
}
}
/*-
*-----------------------------------------------------------------------
* ParseFinishLine --
* Handle the end of a dependency group.
*
* Side Effects:
* inLine set FALSE. 'targets' list destroyed.
*
*-----------------------------------------------------------------------
*/
static void
ParseFinishLine()
{
if (inLine) {
Lst_Every(&targets, Suff_EndTransform);
Lst_Destroy(&targets, ParseHasCommands);
Lst_Init(&targets);
inLine = FALSE;
}
}
/*-
*---------------------------------------------------------------------
* Parse_File --
* Parse a file into its component parts, incorporating it into the
* current dependency graph. This is the main function and controls
* almost every other function in this module
*
* Results:
* None
*
* Side Effects:
* Loads. Nodes are added to the list of all targets, nodes and links
* are added to the dependency graph. etc. etc. etc.
*---------------------------------------------------------------------
*/
void
Parse_File(name, stream)
char *name; /* the name of the file being read */
FILE * stream; /* Stream open to makefile to parse */
{
register char *cp, /* pointer into the line */
*line; /* the line we're working on */
inLine = FALSE;
Parse_FromFile(name, stream);
do {
while ((line = ParseReadLine ()) != NULL) {
if (*line == '.') {
/*
* Lines that begin with the special character are either
* include or undef directives.
*/
for (cp = line + 1; isspace (*cp); cp++) {
continue;
}
if (strncmp (cp, "include", 7) == 0) {
ParseDoInclude (cp + 7);
goto nextLine;
} else if (strncmp(cp, "undef", 5) == 0) {
char *cp2;
for (cp += 5; isspace((unsigned char) *cp); cp++) {
continue;
}
for (cp2 = cp; !isspace((unsigned char) *cp2) &&
(*cp2 != '\0'); cp2++) {
continue;
}
*cp2 = '\0';
Var_Delete(cp, VAR_GLOBAL);
goto nextLine;
}
}
if (*line == '#') {
/* If we're this far, the line must be a comment. */
goto nextLine;
}
if (*line == '\t') {
/*
* If a line starts with a tab, it can only hope to be
* a creation command.
*/
#ifndef POSIX
shellCommand:
#endif
for (cp = line + 1; isspace (*cp); cp++) {
continue;
}
if (*cp) {
if (inLine) {
/*
* So long as it's not a blank line and we're actually
* in a dependency spec, add the command to the list of
* commands of all targets in the dependency spec
*/
Lst_ForEach(&targets, ParseAddCmd, cp);
#ifdef CLEANUP
Lst_AtEnd(&targCmds, line);
#endif
continue;
} else {
Parse_Error (PARSE_FATAL,
"Unassociated shell command \"%s\"",
cp);
}
}
#ifdef SYSVINCLUDE
} else if (strncmp (line, "include", 7) == 0 &&
isspace((unsigned char) line[7]) &&
strchr(line, ':') == NULL) {
/*
* It's an S3/S5-style "include".
*/
ParseTraditionalInclude (line + 7);
goto nextLine;
#endif
} else if (Parse_IsVar (line)) {
ParseFinishLine();
Parse_DoVar (line, VAR_GLOBAL);
} else {
/*
* We now know it's a dependency line so it needs to have all
* variables expanded before being parsed. Tell the variable
* module to complain if some variable is undefined...
* To make life easier on novices, if the line is indented we
* first make sure the line has a dependency operator in it.
* If it doesn't have an operator and we're in a dependency
* line's script, we assume it's actually a shell command
* and add it to the current list of targets.
*/
#ifndef POSIX
Boolean nonSpace = FALSE;
#endif
cp = line;
if (isspace((unsigned char) line[0])) {
while ((*cp != '\0') && isspace((unsigned char) *cp)) {
cp++;
}
if (*cp == '\0') {
goto nextLine;
}
#ifndef POSIX
while ((*cp != ':') && (*cp != '!') && (*cp != '\0')) {
nonSpace = TRUE;
cp++;
}
#endif
}
#ifndef POSIX
if (*cp == '\0') {
if (inLine) {
Parse_Error (PARSE_WARNING,
"Shell command needs a leading tab");
goto shellCommand;
} else if (nonSpace) {
Parse_Error (PARSE_FATAL, "Missing operator");
}
} else {
#endif
ParseFinishLine();
cp = Var_Subst(line, NULL, TRUE);
free (line);
line = cp;
/* Need a new list for the target nodes */
Lst_Destroy(&targets, NOFREE);
Lst_Init(&targets);
inLine = TRUE;
ParseDoDependency (line);
#ifndef POSIX
}
#endif
}
nextLine:
free (line);
}
} while (Parse_NextFile());
/* Make sure conditionals are clean */
Cond_End();
Finish_Errors();
}
/*-
*---------------------------------------------------------------------
* Parse_Init --
* initialize the parsing module
*
* Side Effects:
* the parseIncPath list is initialized...
*---------------------------------------------------------------------
*/
void
Parse_Init()
{
mainNode = NULL;
Lst_Init(&parseIncPath);
Lst_Init(&sysIncPath);
Lst_Init(&targets);
#ifdef CLEANUP
LowParse_Init();
Lst_Init(&targCmds);
Lst_Init(&fileNames);
#endif
}
void
Parse_End()
{
#ifdef CLEANUP
Lst_Destroy(&targCmds, (SimpleProc)free);
Lst_Destroy(&fileNames, (SimpleProc)free);
Lst_Delete(&targets, NOFREE);
Lst_Destroy(&sysIncPath, Dir_Destroy);
Lst_Destroy(&parseIncPath, Dir_Destroy);
LowParse_End();
#endif
}
/*-
*-----------------------------------------------------------------------
* Parse_MainName --
* Return a Lst of the main target to create for main()'s sake. If
* no such target exists, we Punt with an obnoxious error message.
*
* Side Effects:
* Add the node to create to the list.
*
*-----------------------------------------------------------------------
*/
void
Parse_MainName(listmain)
Lst listmain; /* result list */
{
if (mainNode == NULL)
Punt ("no target to make.");
/*NOTREACHED*/
else if (mainNode->type & OP_DOUBLEDEP) {
Lst_AtEnd(listmain, mainNode);
Lst_Concat(listmain, &mainNode->cohorts);
}
else
Lst_AtEnd(listmain, mainNode);
}
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