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- /*
- * Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
- * Copyright (c) 1988, 1989 by Adam de Boor
- * 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.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)suff.c 5.6 (Berkeley) 6/1/90";
- #endif /* not lint */
-
- /*-
- * suff.c --
- * Functions to maintain suffix lists and find implicit dependents
- * using suffix transformation rules
- *
- * Interface:
- * Suff_Init Initialize all things to do with suffixes.
- *
- * Suff_DoPaths This function is used to make life easier
- * when searching for a file according to its
- * suffix. It takes the global search path,
- * as defined using the .PATH: target, and appends
- * its directories to the path of each of the
- * defined suffixes, as specified using
- * .PATH<suffix>: targets. In addition, all
- * directories given for suffixes labeled as
- * include files or libraries, using the .INCLUDES
- * or .LIBS targets, are played with using
- * Dir_MakeFlags to create the .INCLUDES and
- * .LIBS global variables.
- *
- * Suff_ClearSuffixes Clear out all the suffixes and defined
- * transformations.
- *
- * Suff_IsTransform Return TRUE if the passed string is the lhs
- * of a transformation rule.
- *
- * Suff_AddSuffix Add the passed string as another known suffix.
- *
- * Suff_GetPath Return the search path for the given suffix.
- *
- * Suff_AddInclude Mark the given suffix as denoting an include
- * file.
- *
- * Suff_AddLib Mark the given suffix as denoting a library.
- *
- * Suff_AddTransform Add another transformation to the suffix
- * graph. Returns GNode suitable for framing, I
- * mean, tacking commands, attributes, etc. on.
- *
- * Suff_SetNull Define the suffix to consider the suffix of
- * any file that doesn't have a known one.
- *
- * Suff_FindDeps Find implicit sources for and the location of
- * a target based on its suffix. Returns the
- * bottom-most node added to the graph or NILGNODE
- * if the target had no implicit sources.
- */
-
- #include <stdio.h>
- #include "make.h"
- #include "bit.h"
-
- static Lst sufflist; /* Lst of suffixes */
- static Lst transforms; /* Lst of transformation rules */
-
- static int sNum = 0; /* Counter for assigning suffix numbers */
-
- /*
- * Structure describing an individual suffix.
- */
- typedef struct _Suff {
- char *name; /* The suffix itself */
- int nameLen; /* Length of the suffix */
- short flags; /* Type of suffix */
- #define SUFF_INCLUDE 0x01 /* One which is #include'd */
- #define SUFF_LIBRARY 0x02 /* One which contains a library */
- #define SUFF_NULL 0x04 /* The empty suffix */
- Lst searchPath; /* The path along which files of this suffix
- * may be found */
- int sNum; /* The suffix number */
- Lst parents; /* Suffixes we have a transformation to */
- Lst children; /* Suffixes we have a transformation from */
- } Suff;
-
- /*
- * Structure used in the search for implied sources.
- */
- typedef struct _Src {
- char *file; /* The file to look for */
- char *pref; /* Prefix from which file was formed */
- Suff *suff; /* The suffix on the file */
- struct _Src *parent; /* The Src for which this is a source */
- GNode *node; /* The node describing the file */
- int children; /* Count of existing children (so we don't free
- * this thing too early or never nuke it) */
- } Src;
-
- static Suff *suffNull; /* The NULL suffix for this run */
- static Suff *emptySuff; /* The empty suffix required for POSIX
- * single-suffix transformation rules */
-
- /*************** Lst Predicates ****************/
- /*-
- *-----------------------------------------------------------------------
- * SuffStrIsPrefix --
- * See if pref is a prefix of str.
- *
- * Results:
- * NULL if it ain't, pointer to character in str after prefix if so
- *
- * Side Effects:
- * None
- *-----------------------------------------------------------------------
- */
- static char *
- SuffStrIsPrefix (pref, str)
- register char *pref; /* possible prefix */
- register char *str; /* string to check */
- {
- while (*str && *pref == *str) {
- pref++;
- str++;
- }
-
- return (*pref ? NULL : str);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * SuffSuffIsSuffix --
- * See if suff is a suffix of str. Str should point to THE END of the
- * string to check. (THE END == the null byte)
- *
- * Results:
- * NULL if it ain't, pointer to character in str before suffix if
- * it is.
- *
- * Side Effects:
- * None
- *-----------------------------------------------------------------------
- */
- static char *
- SuffSuffIsSuffix (s, str)
- register Suff *s; /* possible suffix */
- char *str; /* string to examine */
- {
- register char *p1; /* Pointer into suffix name */
- register char *p2; /* Pointer into string being examined */
-
- p1 = s->name + s->nameLen;
- p2 = str;
-
- while (p1 >= s->name && *p1 == *p2) {
- p1--;
- p2--;
- }
-
- return (p1 == s->name - 1 ? p2 : NULL);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * SuffSuffIsSuffixP --
- * Predicate form of SuffSuffIsSuffix. Passed as the callback function
- * to Lst_Find.
- *
- * Results:
- * 0 if the suffix is the one desired, non-zero if not.
- *
- * Side Effects:
- * None.
- *
- *-----------------------------------------------------------------------
- */
- SuffSuffIsSuffixP(s, str)
- Suff *s;
- char *str;
- {
- return(!SuffSuffIsSuffix(s, str));
- }
-
- /*-
- *-----------------------------------------------------------------------
- * SuffSuffHasNameP --
- * Callback procedure for finding a suffix based on its name. Used by
- * Suff_GetPath.
- *
- * Results:
- * 0 if the suffix is of the given name. non-zero otherwise.
- *
- * Side Effects:
- * None
- *-----------------------------------------------------------------------
- */
- static int
- SuffSuffHasNameP (s, sname)
- Suff *s; /* Suffix to check */
- char *sname; /* Desired name */
- {
- return (strcmp (sname, s->name));
- }
-
- /*-
- *-----------------------------------------------------------------------
- * SuffSuffIsPrefix --
- * See if the suffix described by s is a prefix of the string. Care
- * must be taken when using this to search for transformations and
- * what-not, since there could well be two suffixes, one of which
- * is a prefix of the other...
- *
- * Results:
- * 0 if s is a prefix of str. non-zero otherwise
- *
- * Side Effects:
- * None
- *-----------------------------------------------------------------------
- */
- static int
- SuffSuffIsPrefix (s, str)
- Suff *s; /* suffix to compare */
- char *str; /* string to examine */
- {
- return (SuffStrIsPrefix (s->name, str) == NULL ? 1 : 0);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * SuffGNHasNameP --
- * See if the graph node has the desired name
- *
- * Results:
- * 0 if it does. non-zero if it doesn't
- *
- * Side Effects:
- * None
- *-----------------------------------------------------------------------
- */
- static int
- SuffGNHasNameP (gn, name)
- GNode *gn; /* current node we're looking at */
- char *name; /* name we're looking for */
- {
- return (strcmp (name, gn->name));
- }
-
- /*********** Maintenance Functions ************/
- /*-
- *-----------------------------------------------------------------------
- * SuffFree --
- * Free up all memory associated with the given suffix structure.
- *
- * Results:
- * none
- *
- * Side Effects:
- * the suffix entry is detroyed
- *-----------------------------------------------------------------------
- */
- static void
- SuffFree (s)
- Suff *s;
- {
- Lst_Destroy (s->children, NOFREE);
- Lst_Destroy (s->parents, NOFREE);
- Lst_Destroy (s->searchPath, Dir_Destroy);
- free ((Address)s->name);
- free ((Address)s);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * SuffInsert --
- * Insert the suffix into the list keeping the list ordered by suffix
- * numbers.
- *
- * Results:
- * None
- *
- * Side Effects:
- * Not really
- *-----------------------------------------------------------------------
- */
- static void
- SuffInsert (l, s)
- Lst l; /* the list where in s should be inserted */
- Suff *s; /* the suffix to insert */
- {
- LstNode ln; /* current element in l we're examining */
- Suff *s2; /* the suffix descriptor in this element */
-
- if (Lst_Open (l) == FAILURE) {
- return;
- }
- while ((ln = Lst_Next (l)) != NILLNODE) {
- s2 = (Suff *) Lst_Datum (ln);
- if (s2->sNum >= s->sNum) {
- break;
- }
- }
-
- Lst_Close (l);
- if (DEBUG(SUFF)) {
- printf("inserting %s(%d)...", s->name, s->sNum);
- }
- if (ln == NILLNODE) {
- if (DEBUG(SUFF)) {
- printf("at end of list\n");
- }
- (void)Lst_AtEnd (l, (ClientData)s);
- } else if (s2->sNum != s->sNum) {
- if (DEBUG(SUFF)) {
- printf("before %s(%d)\n", s2->name, s2->sNum);
- }
- (void)Lst_Insert (l, ln, (ClientData)s);
- } else if (DEBUG(SUFF)) {
- printf("already there\n");
- }
- }
-
- /*-
- *-----------------------------------------------------------------------
- * Suff_ClearSuffixes --
- * This is gross. Nuke the list of suffixes but keep all transformation
- * rules around. The transformation graph is destroyed in this process,
- * but we leave the list of rules so when a new graph is formed the rules
- * will remain.
- * This function is called from the parse module when a
- * .SUFFIXES:\n line is encountered.
- *
- * Results:
- * none
- *
- * Side Effects:
- * the sufflist and its graph nodes are destroyed
- *-----------------------------------------------------------------------
- */
- void
- Suff_ClearSuffixes ()
- {
- Lst_Destroy (sufflist, SuffFree);
-
- sufflist = Lst_Init(FALSE);
- sNum = 0;
- suffNull = emptySuff;
- }
-
- /*-
- *-----------------------------------------------------------------------
- * SuffParseTransform --
- * Parse a transformation string to find its two component suffixes.
- *
- * Results:
- * TRUE if the string is a valid transformation and FALSE otherwise.
- *
- * Side Effects:
- * The passed pointers are overwritten.
- *
- *-----------------------------------------------------------------------
- */
- static Boolean
- SuffParseTransform(str, srcPtr, targPtr)
- char *str; /* String being parsed */
- Suff **srcPtr; /* Place to store source of trans. */
- Suff **targPtr; /* Place to store target of trans. */
- {
- register LstNode srcLn; /* element in suffix list of trans source*/
- register Suff *src; /* Source of transformation */
- register LstNode targLn; /* element in suffix list of trans target*/
- register char *str2; /* Extra pointer (maybe target suffix) */
- LstNode singleLn; /* element in suffix list of any suffix
- * that exactly matches str */
- Suff *single; /* Source of possible transformation to
- * null suffix */
-
- srcLn = NILLNODE;
- singleLn = NILLNODE;
-
- /*
- * Loop looking first for a suffix that matches the start of the
- * string and then for one that exactly matches the rest of it. If
- * we can find two that meet these criteria, we've successfully
- * parsed the string.
- */
- while (1) {
- if (srcLn == NILLNODE) {
- srcLn = Lst_Find(sufflist, (ClientData)str, SuffSuffIsPrefix);
- } else {
- srcLn = Lst_FindFrom (sufflist, Lst_Succ(srcLn), (ClientData)str,
- SuffSuffIsPrefix);
- }
- if (srcLn == NILLNODE) {
- /*
- * Ran out of source suffixes -- no such rule
- */
- if (singleLn != NILLNODE) {
- /*
- * Not so fast Mr. Smith! There was a suffix that encompassed
- * the entire string, so we assume it was a transformation
- * to the null suffix (thank you POSIX). We still prefer to
- * find a double rule over a singleton, hence we leave this
- * check until the end.
- *
- * XXX: Use emptySuff over suffNull?
- */
- *srcPtr = single;
- *targPtr = suffNull;
- return(TRUE);
- }
- return (FALSE);
- }
- src = (Suff *) Lst_Datum (srcLn);
- str2 = str + src->nameLen;
- if (*str2 == '\0') {
- single = src;
- singleLn = srcLn;
- } else {
- targLn = Lst_Find(sufflist, (ClientData)str2, SuffSuffHasNameP);
- if (targLn != NILLNODE) {
- *srcPtr = src;
- *targPtr = (Suff *)Lst_Datum(targLn);
- return (TRUE);
- }
- }
- }
- }
-
- /*-
- *-----------------------------------------------------------------------
- * Suff_IsTransform --
- * Return TRUE if the given string is a transformation rule
- *
- *
- * Results:
- * TRUE if the string is a concatenation of two known suffixes.
- * FALSE otherwise
- *
- * Side Effects:
- * None
- *-----------------------------------------------------------------------
- */
- Boolean
- Suff_IsTransform (str)
- char *str; /* string to check */
- {
- Suff *src, *targ;
-
- return (SuffParseTransform(str, &src, &targ));
- }
-
- /*-
- *-----------------------------------------------------------------------
- * Suff_AddTransform --
- * Add the transformation rule described by the line to the
- * list of rules and place the transformation itself in the graph
- *
- * Results:
- * The node created for the transformation in the transforms list
- *
- * Side Effects:
- * The node is placed on the end of the transforms Lst and links are
- * made between the two suffixes mentioned in the target name
- *-----------------------------------------------------------------------
- */
- GNode *
- Suff_AddTransform (line)
- char *line; /* name of transformation to add */
- {
- GNode *gn; /* GNode of transformation rule */
- Suff *s, /* source suffix */
- *t; /* target suffix */
- LstNode ln; /* Node for existing transformation */
-
- ln = Lst_Find (transforms, (ClientData)line, SuffGNHasNameP);
- if (ln == NILLNODE) {
- /*
- * Make a new graph node for the transformation. It will be filled in
- * by the Parse module.
- */
- gn = Targ_NewGN (line);
- (void)Lst_AtEnd (transforms, (ClientData)gn);
- } else {
- /*
- * New specification for transformation rule. Just nuke the old list
- * of commands so they can be filled in again... We don't actually
- * free the commands themselves, because a given command can be
- * attached to several different transformations.
- */
- gn = (GNode *) Lst_Datum (ln);
- Lst_Destroy (gn->commands, NOFREE);
- Lst_Destroy (gn->children, NOFREE);
- gn->commands = Lst_Init (FALSE);
- gn->children = Lst_Init (FALSE);
- }
-
- gn->type = OP_TRANSFORM;
-
- (void)SuffParseTransform(line, &s, &t);
-
- /*
- * link the two together in the proper relationship and order
- */
- if (DEBUG(SUFF)) {
- printf("defining transformation from `%s' to `%s'\n",
- s->name, t->name);
- }
- SuffInsert (t->children, s);
- SuffInsert (s->parents, t);
-
- return (gn);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * Suff_EndTransform --
- * Handle the finish of a transformation definition, removing the
- * transformation from the graph if it has neither commands nor
- * sources. This is a callback procedure for the Parse module via
- * Lst_ForEach
- *
- * Results:
- * === 0
- *
- * Side Effects:
- * If the node has no commands or children, the children and parents
- * lists of the affected suffices are altered.
- *
- *-----------------------------------------------------------------------
- */
- int
- Suff_EndTransform(gn)
- GNode *gn; /* Node for transformation */
- {
- if ((gn->type & OP_TRANSFORM) && Lst_IsEmpty(gn->commands) &&
- Lst_IsEmpty(gn->children))
- {
- Suff *s, *t;
- LstNode ln;
-
- (void)SuffParseTransform(gn->name, &s, &t);
-
- if (DEBUG(SUFF)) {
- printf("deleting transformation from %s to %s\n",
- s->name, t->name);
- }
-
- /*
- * Remove the source from the target's children list. We check for a
- * nil return to handle a beanhead saying something like
- * .c.o .c.o:
- *
- * We'll be called twice when the next target is seen, but .c and .o
- * are only linked once...
- */
- ln = Lst_Member(t->children, (ClientData)s);
- if (ln != NILLNODE) {
- (void)Lst_Remove(t->children, ln);
- }
-
- /*
- * Remove the target from the source's parents list
- */
- ln = Lst_Member(s->parents, (ClientData)t);
- if (ln != NILLNODE) {
- (void)Lst_Remove(s->parents, ln);
- }
- } else if ((gn->type & OP_TRANSFORM) && DEBUG(SUFF)) {
- printf("transformation %s complete\n", gn->name);
- }
-
- return(0);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * SuffRebuildGraph --
- * Called from Suff_AddSuffix via Lst_ForEach to search through the
- * list of existing transformation rules and rebuild the transformation
- * graph when it has been destroyed by Suff_ClearSuffixes. If the
- * given rule is a transformation involving this suffix and another,
- * existing suffix, the proper relationship is established between
- * the two.
- *
- * Results:
- * Always 0.
- *
- * Side Effects:
- * The appropriate links will be made between this suffix and
- * others if transformation rules exist for it.
- *
- *-----------------------------------------------------------------------
- */
- static int
- SuffRebuildGraph(transform, s)
- GNode *transform; /* Transformation to test */
- Suff *s; /* Suffix to rebuild */
- {
- register char *cp;
- register LstNode ln;
- register Suff *s2;
-
- /*
- * First see if it is a transformation from this suffix.
- */
- cp = SuffStrIsPrefix(s->name, transform->name);
- if (cp != (char *)NULL) {
- ln = Lst_Find(sufflist, (ClientData)cp, SuffSuffHasNameP);
- if (ln != NILLNODE) {
- /*
- * Found target. Link in and return, since it can't be anything
- * else.
- */
- s2 = (Suff *)Lst_Datum(ln);
- SuffInsert(s2->children, s);
- SuffInsert(s->parents, s2);
- return(0);
- }
- }
-
- /*
- * Not from, maybe to?
- */
- cp = SuffSuffIsSuffix(s, transform->name + strlen(transform->name));
- if (cp != (char *)NULL) {
- /*
- * Null-terminate the source suffix in order to find it.
- */
- cp[1] = '\0';
- ln = Lst_Find(sufflist, (ClientData)transform->name, SuffSuffHasNameP);
- /*
- * Replace the start of the target suffix
- */
- cp[1] = s->name[0];
- if (ln != NILLNODE) {
- /*
- * Found it -- establish the proper relationship
- */
- s2 = (Suff *)Lst_Datum(ln);
- SuffInsert(s->children, s2);
- SuffInsert(s2->parents, s);
- }
- }
- return(0);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * Suff_AddSuffix --
- * Add the suffix in string to the end of the list of known suffixes.
- * Should we restructure the suffix graph? Make doesn't...
- *
- * Results:
- * None
- *
- * Side Effects:
- * A GNode is created for the suffix and a Suff structure is created and
- * added to the suffixes list unless the suffix was already known.
- *-----------------------------------------------------------------------
- */
- void
- Suff_AddSuffix (str)
- char *str; /* the name of the suffix to add */
- {
- Suff *s; /* new suffix descriptor */
- LstNode ln;
-
- ln = Lst_Find (sufflist, (ClientData)str, SuffSuffHasNameP);
- if (ln == NILLNODE) {
- s = (Suff *) emalloc (sizeof (Suff));
-
- s->name = strdup (str);
- s->nameLen = strlen (s->name);
- s->searchPath = Lst_Init (FALSE);
- s->children = Lst_Init (FALSE);
- s->parents = Lst_Init (FALSE);
- s->sNum = sNum++;
- s->flags = 0;
-
- (void)Lst_AtEnd (sufflist, (ClientData)s);
- /*
- * Look for any existing transformations from or to this suffix.
- * XXX: Only do this after a Suff_ClearSuffixes?
- */
- Lst_ForEach (transforms, SuffRebuildGraph, (ClientData)s);
- }
- }
-
- /*-
- *-----------------------------------------------------------------------
- * Suff_GetPath --
- * Return the search path for the given suffix, if it's defined.
- *
- * Results:
- * The searchPath for the desired suffix or NILLST if the suffix isn't
- * defined.
- *
- * Side Effects:
- * None
- *-----------------------------------------------------------------------
- */
- Lst
- Suff_GetPath (sname)
- char *sname;
- {
- LstNode ln;
- Suff *s;
-
- ln = Lst_Find (sufflist, (ClientData)sname, SuffSuffHasNameP);
- if (ln == NILLNODE) {
- return (NILLST);
- } else {
- s = (Suff *) Lst_Datum (ln);
- return (s->searchPath);
- }
- }
-
- /*-
- *-----------------------------------------------------------------------
- * Suff_DoPaths --
- * Extend the search paths for all suffixes to include the default
- * search path.
- *
- * Results:
- * None.
- *
- * Side Effects:
- * The searchPath field of all the suffixes is extended by the
- * directories in dirSearchPath. If paths were specified for the
- * ".h" suffix, the directories are stuffed into a global variable
- * called ".INCLUDES" with each directory preceeded by a -I. The same
- * is done for the ".a" suffix, except the variable is called
- * ".LIBS" and the flag is -L.
- *-----------------------------------------------------------------------
- */
- void
- Suff_DoPaths()
- {
- register Suff *s;
- register LstNode ln;
- Lst inIncludes; /* Cumulative .INCLUDES path */
- Lst inLibs; /* Cumulative .LIBS path */
-
- if (Lst_Open (sufflist) == FAILURE) {
- return;
- }
-
- inIncludes = Lst_Init(FALSE);
- inLibs = Lst_Init(FALSE);
-
- while ((ln = Lst_Next (sufflist)) != NILLNODE) {
- s = (Suff *) Lst_Datum (ln);
- if (!Lst_IsEmpty (s->searchPath)) {
- #ifdef INCLUDES
- if (s->flags & SUFF_INCLUDE) {
- Dir_Concat(inIncludes, s->searchPath);
- }
- #endif /* INCLUDES */
- #ifdef LIBRARIES
- if (s->flags & SUFF_LIBRARY) {
- Dir_Concat(inLibs, s->searchPath);
- }
- #endif /* LIBRARIES */
- Dir_Concat(s->searchPath, dirSearchPath);
- } else {
- Lst_Destroy (s->searchPath, Dir_Destroy);
- s->searchPath = Lst_Duplicate(dirSearchPath, Dir_CopyDir);
- }
- }
-
- Var_Set(".INCLUDES", Dir_MakeFlags("-I", inIncludes), VAR_GLOBAL);
- Var_Set(".LIBS", Dir_MakeFlags("-L", inLibs), VAR_GLOBAL);
-
- Lst_Destroy(inIncludes, Dir_Destroy);
- Lst_Destroy(inLibs, Dir_Destroy);
-
- Lst_Close (sufflist);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * Suff_AddInclude --
- * Add the given suffix as a type of file which gets included.
- * Called from the parse module when a .INCLUDES line is parsed.
- * The suffix must have already been defined.
- *
- * Results:
- * None.
- *
- * Side Effects:
- * The SUFF_INCLUDE bit is set in the suffix's flags field
- *
- *-----------------------------------------------------------------------
- */
- void
- Suff_AddInclude (sname)
- char *sname; /* Name of suffix to mark */
- {
- LstNode ln;
- Suff *s;
-
- ln = Lst_Find (sufflist, (ClientData)sname, SuffSuffHasNameP);
- if (ln != NILLNODE) {
- s = (Suff *) Lst_Datum (ln);
- s->flags |= SUFF_INCLUDE;
- }
- }
-
- /*-
- *-----------------------------------------------------------------------
- * Suff_AddLib --
- * Add the given suffix as a type of file which is a library.
- * Called from the parse module when parsing a .LIBS line. The
- * suffix must have been defined via .SUFFIXES before this is
- * called.
- *
- * Results:
- * None.
- *
- * Side Effects:
- * The SUFF_LIBRARY bit is set in the suffix's flags field
- *
- *-----------------------------------------------------------------------
- */
- void
- Suff_AddLib (sname)
- char *sname; /* Name of suffix to mark */
- {
- LstNode ln;
- Suff *s;
-
- ln = Lst_Find (sufflist, (ClientData)sname, SuffSuffHasNameP);
- if (ln != NILLNODE) {
- s = (Suff *) Lst_Datum (ln);
- s->flags |= SUFF_LIBRARY;
- }
- }
-
- /********** Implicit Source Search Functions *********/
- /*
- * A structure for passing more than one argument to the Lst-library-invoked
- * function...
- */
- typedef struct {
- Lst l;
- Src *s;
- } LstSrc;
-
- /*-
- *-----------------------------------------------------------------------
- * SuffAddSrc --
- * Add a suffix as a Src structure to the given list with its parent
- * being the given Src structure. If the suffix is the null suffix,
- * the prefix is used unaltered as the file name in the Src structure.
- *
- * Results:
- * always returns 0
- *
- * Side Effects:
- * A Src structure is created and tacked onto the end of the list
- *-----------------------------------------------------------------------
- */
- static int
- SuffAddSrc (s, ls)
- Suff *s; /* suffix for which to create a Src structure */
- LstSrc *ls; /* list and parent for the new Src */
- {
- Src *s2; /* new Src structure */
- Src *targ; /* Target structure */
-
- targ = ls->s;
-
- if ((s->flags & SUFF_NULL) && (*s->name != '\0')) {
- /*
- * If the suffix has been marked as the NULL suffix, also create a Src
- * structure for a file with no suffix attached. Two birds, and all
- * that...
- */
- s2 = (Src *) emalloc (sizeof (Src));
- s2->file = strdup(targ->pref);
- s2->pref = targ->pref;
- s2->parent = targ;
- s2->node = NILGNODE;
- s2->suff = s;
- s2->children = 0;
- targ->children += 1;
- (void)Lst_AtEnd (ls->l, (ClientData)s2);
- }
- s2 = (Src *) emalloc (sizeof (Src));
- s2->file = str_concat (targ->pref, s->name, 0);
- s2->pref = targ->pref;
- s2->parent = targ;
- s2->node = NILGNODE;
- s2->suff = s;
- s2->children = 0;
- targ->children += 1;
- (void)Lst_AtEnd (ls->l, (ClientData)s2);
-
- return(0);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * SuffAddLevel --
- * Add all the children of targ as Src structures to the given list
- *
- * Results:
- * None
- *
- * Side Effects:
- * Lots of structures are created and added to the list
- *-----------------------------------------------------------------------
- */
- static void
- SuffAddLevel (l, targ)
- Lst l; /* list to which to add the new level */
- Src *targ; /* Src structure to use as the parent */
- {
- LstSrc ls;
-
- ls.s = targ;
- ls.l = l;
-
- Lst_ForEach (targ->suff->children, SuffAddSrc, (ClientData)&ls);
- }
-
- /*-
- *----------------------------------------------------------------------
- * SuffFreeSrc --
- * Free all memory associated with a Src structure
- *
- * Results:
- * None
- *
- * Side Effects:
- * The memory is free'd.
- *----------------------------------------------------------------------
- */
- static void
- SuffFreeSrc (s)
- Src *s;
- {
- free ((Address)s->file);
- if (!s->parent) {
- free((Address)s->pref);
- } else if (--s->parent->children == 0 && s->parent->parent) {
- /*
- * Parent has no more children, now we're gone, and it's not
- * at the top of the tree, so blow it away too.
- */
- SuffFreeSrc(s->parent);
- }
- free ((Address)s);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * SuffFindThem --
- * Find the first existing file/target in the list srcs
- *
- * Results:
- * The lowest structure in the chain of transformations
- *
- * Side Effects:
- * None
- *-----------------------------------------------------------------------
- */
- static Src *
- SuffFindThem (srcs)
- Lst srcs; /* list of Src structures to search through */
- {
- Src *s; /* current Src */
- Src *rs; /* returned Src */
-
- rs = (Src *) NULL;
-
- while (!Lst_IsEmpty (srcs)) {
- s = (Src *) Lst_DeQueue (srcs);
-
- if (DEBUG(SUFF)) {
- printf ("\ttrying %s...", s->file);
- }
- /*
- * A file is considered to exist if either a node exists in the
- * graph for it or the file actually exists.
- */
- if ((Targ_FindNode(s->file, TARG_NOCREATE) != NILGNODE) ||
- (Dir_FindFile (s->file, s->suff->searchPath) != (char *) NULL))
- {
- if (DEBUG(SUFF)) {
- printf ("got it\n");
- }
- rs = s;
- break;
- } else {
- if (DEBUG(SUFF)) {
- printf ("not there\n");
- }
- SuffAddLevel (srcs, s);
- }
- }
- return (rs);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * SuffFindCmds --
- * See if any of the children of the target in the Src structure is
- * one from which the target can be transformed. If there is one,
- * a Src structure is put together for it and returned.
- *
- * Results:
- * The Src structure of the "winning" child, or NIL if no such beast.
- *
- * Side Effects:
- * A Src structure may be allocated.
- *
- *-----------------------------------------------------------------------
- */
- static Src *
- SuffFindCmds (targ)
- Src *targ; /* Src structure to play with */
- {
- LstNode ln; /* General-purpose list node */
- register GNode *t, /* Target GNode */
- *s; /* Source GNode */
- int prefLen;/* The length of the defined prefix */
- Suff *suff; /* Suffix on matching beastie */
- Src *ret; /* Return value */
- char *cp;
-
- t = targ->node;
- (void) Lst_Open (t->children);
- prefLen = strlen (targ->pref);
-
- while ((ln = Lst_Next (t->children)) != NILLNODE) {
- s = (GNode *)Lst_Datum (ln);
-
- cp = rindex (s->name, '/');
- if (cp == (char *)NULL) {
- cp = s->name;
- } else {
- cp++;
- }
- if (strncmp (cp, targ->pref, prefLen) == 0) {
- /*
- * The node matches the prefix ok, see if it has a known
- * suffix.
- */
- ln = Lst_Find (sufflist, (ClientData)&cp[prefLen],
- SuffSuffHasNameP);
- if (ln != NILLNODE) {
- /*
- * It even has a known suffix, see if there's a transformation
- * defined between the node's suffix and the target's suffix.
- *
- * XXX: Handle multi-stage transformations here, too.
- */
- suff = (Suff *)Lst_Datum (ln);
-
- if (Lst_Member (suff->parents,
- (ClientData)targ->suff) != NILLNODE)
- {
- /*
- * Hot Damn! Create a new Src structure to describe
- * this transformation (making sure to duplicate the
- * source node's name so Suff_FindDeps can free it
- * again (ick)), and return the new structure.
- */
- ret = (Src *)emalloc (sizeof(Src));
- ret->file = strdup(s->name);
- ret->pref = targ->pref;
- ret->suff = suff;
- ret->parent = targ;
- ret->node = s;
- ret->children = 0;
- targ->children += 1;
- if (DEBUG(SUFF)) {
- printf ("\tusing existing source %s\n", s->name);
- }
- return (ret);
- }
- }
- }
- }
- Lst_Close (t->children);
- return ((Src *)NULL);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * SuffExpandChildren --
- * Expand the names of any children of a given node that contain
- * variable invocations or file wildcards into actual targets.
- *
- * Results:
- * === 0 (continue)
- *
- * Side Effects:
- * The expanded node is removed from the parent's list of children,
- * and the parent's unmade counter is decremented, but other nodes
- * may be added.
- *
- *-----------------------------------------------------------------------
- */
- static int
- SuffExpandChildren(cgn, pgn)
- GNode *cgn; /* Child to examine */
- GNode *pgn; /* Parent node being processed */
- {
- GNode *gn; /* New source 8) */
- LstNode prevLN; /* Node after which new source should be put */
- LstNode ln; /* List element for old source */
- char *cp; /* Expanded value */
-
- /*
- * New nodes effectively take the place of the child, so place them
- * after the child
- */
- prevLN = Lst_Member(pgn->children, (ClientData)cgn);
-
- /*
- * First do variable expansion -- this takes precedence over
- * wildcard expansion. If the result contains wildcards, they'll be gotten
- * to later since the resulting words are tacked on to the end of
- * the children list.
- */
- if (index(cgn->name, '$') != (char *)NULL) {
- if (DEBUG(SUFF)) {
- printf("Expanding \"%s\"...", cgn->name);
- }
- cp = Var_Subst(cgn->name, pgn, TRUE);
-
- if (cp != (char *)NULL) {
- Lst members = Lst_Init(FALSE);
-
- if (cgn->type & OP_ARCHV) {
- /*
- * Node was an archive(member) target, so we want to call
- * on the Arch module to find the nodes for us, expanding
- * variables in the parent's context.
- */
- char *sacrifice = cp;
-
- (void)Arch_ParseArchive(&sacrifice, members, pgn);
- } else {
- /*
- * Break the result into a vector of strings whose nodes
- * we can find, then add those nodes to the members list.
- * Unfortunately, we can't use brk_string b/c it
- * doesn't understand about variable specifications with
- * spaces in them...
- */
- char *start;
- char *initcp = cp; /* For freeing... */
-
- for (start = cp; *start == ' ' || *start == '\t'; start++) {
- ;
- }
- for (cp = start; *cp != '\0'; cp++) {
- if (*cp == ' ' || *cp == '\t') {
- /*
- * White-space -- terminate element, find the node,
- * add it, skip any further spaces.
- */
- *cp++ = '\0';
- gn = Targ_FindNode(start, TARG_CREATE);
- (void)Lst_AtEnd(members, (ClientData)gn);
- while (*cp == ' ' || *cp == '\t') {
- cp++;
- }
- /*
- * Adjust cp for increment at start of loop, but
- * set start to first non-space.
- */
- start = cp--;
- } else if (*cp == '$') {
- /*
- * Start of a variable spec -- contact variable module
- * to find the end so we can skip over it.
- */
- char *junk;
- int len;
- Boolean doFree;
-
- junk = Var_Parse(cp, pgn, TRUE, &len, &doFree);
- if (junk != var_Error) {
- cp += len - 1;
- }
-
- if (doFree) {
- free(junk);
- }
- } else if (*cp == '\\' && *cp != '\0') {
- /*
- * Escaped something -- skip over it
- */
- cp++;
- }
- }
-
- if (cp != start) {
- /*
- * Stuff left over -- add it to the list too
- */
- gn = Targ_FindNode(start, TARG_CREATE);
- (void)Lst_AtEnd(members, (ClientData)gn);
- }
- /*
- * Point cp back at the beginning again so the variable value
- * can be freed.
- */
- cp = initcp;
- }
- /*
- * Add all elements of the members list to the parent node.
- */
- while(!Lst_IsEmpty(members)) {
- gn = (GNode *)Lst_DeQueue(members);
-
- if (DEBUG(SUFF)) {
- printf("%s...", gn->name);
- }
- if (Lst_Member(pgn->children, (ClientData)gn) == NILLNODE) {
- (void)Lst_Append(pgn->children, prevLN, (ClientData)gn);
- prevLN = Lst_Succ(prevLN);
- (void)Lst_AtEnd(gn->parents, (ClientData)pgn);
- pgn->unmade++;
- }
- }
- Lst_Destroy(members, NOFREE);
- /*
- * Free the result
- */
- free((char *)cp);
- }
- /*
- * Now the source is expanded, remove it from the list of children to
- * keep it from being processed.
- */
- ln = Lst_Member(pgn->children, (ClientData)cgn);
- pgn->unmade--;
- Lst_Remove(pgn->children, ln);
- if (DEBUG(SUFF)) {
- printf("\n");
- }
- } else if (Dir_HasWildcards(cgn->name)) {
- Lst exp; /* List of expansions */
- Lst path; /* Search path along which to expand */
-
- /*
- * Find a path along which to expand the word.
- *
- * If the word has a known suffix, use that path.
- * If it has no known suffix and we're allowed to use the null
- * suffix, use its path.
- * Else use the default system search path.
- */
- cp = cgn->name + strlen(cgn->name);
- ln = Lst_Find(sufflist, (ClientData)cp, SuffSuffIsSuffixP);
-
- if (DEBUG(SUFF)) {
- printf("Wildcard expanding \"%s\"...", cgn->name);
- }
-
- if (ln != NILLNODE) {
- Suff *s = (Suff *)Lst_Datum(ln);
-
- if (DEBUG(SUFF)) {
- printf("suffix is \"%s\"...", s->name);
- }
- path = s->searchPath;
- } else {
- /*
- * Use default search path
- */
- path = dirSearchPath;
- }
-
- /*
- * Expand the word along the chosen path
- */
- exp = Lst_Init(FALSE);
- Dir_Expand(cgn->name, path, exp);
-
- while (!Lst_IsEmpty(exp)) {
- /*
- * Fetch next expansion off the list and find its GNode
- */
- cp = (char *)Lst_DeQueue(exp);
-
- if (DEBUG(SUFF)) {
- printf("%s...", cp);
- }
- gn = Targ_FindNode(cp, TARG_CREATE);
-
- /*
- * If gn isn't already a child of the parent, make it so and
- * up the parent's count of unmade children.
- */
- if (Lst_Member(pgn->children, (ClientData)gn) == NILLNODE) {
- (void)Lst_Append(pgn->children, prevLN, (ClientData)gn);
- prevLN = Lst_Succ(prevLN);
- (void)Lst_AtEnd(gn->parents, (ClientData)pgn);
- pgn->unmade++;
- }
- }
-
- /*
- * Nuke what's left of the list
- */
- Lst_Destroy(exp, NOFREE);
-
- /*
- * Now the source is expanded, remove it from the list of children to
- * keep it from being processed.
- */
- ln = Lst_Member(pgn->children, (ClientData)cgn);
- pgn->unmade--;
- Lst_Remove(pgn->children, ln);
- if (DEBUG(SUFF)) {
- printf("\n");
- }
- }
-
- return(0);
- }
-
- /*-
- *-----------------------------------------------------------------------
- * SuffApplyTransform --
- * Apply a transformation rule, given the source and target nodes
- * and suffixes.
- *
- * Results:
- * TRUE if successful, FALSE if not.
- *
- * Side Effects:
- * The source and target are linked and the commands from the
- * transformation are added to the target node's commands list.
- * All attributes but OP_DEPMASK and OP_TRANSFORM are applied
- * to the target. The target also inherits all the sources for
- * the transformation rule.
- *
- *-----------------------------------------------------------------------
- */
- static Boolean
- SuffApplyTransform(tGn, sGn, t, s)
- GNode *tGn; /* Target node */
- GNode *sGn; /* Source node */
- Suff *t; /* Target suffix */
- Suff *s; /* Source suffix */
- {
- LstNode ln; /* General node */
- char *tname; /* Name of transformation rule */
- GNode *gn; /* Node for same */
-
- if (Lst_Member(tGn->children, (ClientData)sGn) == NILLNODE) {
- /*
- * Not already linked, so form the proper links between the
- * target and source.
- */
- (void)Lst_AtEnd(tGn->children, (ClientData)sGn);
- (void)Lst_AtEnd(sGn->parents, (ClientData)tGn);
- tGn->unmade += 1;
- }
-
- if ((sGn->type & OP_OPMASK) == OP_DOUBLEDEP) {
- /*
- * When a :: node is used as the implied source of a node, we have
- * to link all its cohorts in as sources as well. Only the initial
- * sGn gets the target in its iParents list, however, as that
- * will be sufficient to get the .IMPSRC variable set for tGn
- */
- for (ln=Lst_First(sGn->cohorts); ln != NILLNODE; ln=Lst_Succ(ln)) {
- gn = (GNode *)Lst_Datum(ln);
-
- if (Lst_Member(tGn->children, (ClientData)gn) == NILLNODE) {
- /*
- * Not already linked, so form the proper links between the
- * target and source.
- */
- (void)Lst_AtEnd(tGn->children, (ClientData)gn);
- (void)Lst_AtEnd(gn->parents, (ClientData)tGn);
- tGn->unmade += 1;
- }
- }
- }
- /*
- * Locate the transformation rule itself
- */
- tname = str_concat(s->name, t->name, 0);
- ln = Lst_Find(transforms, (ClientData)tname, SuffGNHasNameP);
- free(tname);
-
- if (ln == NILLNODE) {
- /*
- * Not really such a transformation rule (can happen when we're
- * called to link an OP_MEMBER and OP_ARCHV node), so return
- * FALSE.
- */
- return(FALSE);
- }
-
- gn = (GNode *)Lst_Datum(ln);
-
- if (DEBUG(SUFF)) {
- printf("\tapplying %s -> %s to \"%s\"\n", s->name, t->name, tGn->name);
- }
-
- /*
- * Record last child for expansion purposes
- */
- ln = Lst_Last(tGn->children);
-
- /*
- * Pass the buck to Make_HandleUse to apply the rule
- */
- (void)Make_HandleUse(gn, tGn);
-
- /*
- * Deal with wildcards and variables in any acquired sources
- */
- ln = Lst_Succ(ln);
- if (ln != NILLNODE) {
- Lst_ForEachFrom(tGn->children, ln,
- SuffExpandChildren, (ClientData)tGn);
- }
-
- /*
- * Keep track of another parent to which this beast is transformed so
- * the .IMPSRC variable can be set correctly for the parent.
- */
- (void)Lst_AtEnd(sGn->iParents, (ClientData)tGn);
-
- return(TRUE);
- }
-
-
- /*-
- *-----------------------------------------------------------------------
- * SuffFindArchiveDeps --
- * Locate dependencies for an OP_ARCHV node.
- *
- * Results:
- * None
- *
- * Side Effects:
- * Same as Suff_FindDeps
- *
- *-----------------------------------------------------------------------
- */
- static void
- SuffFindArchiveDeps(gn)
- GNode *gn; /* Node for which to locate dependencies */
- {
- char *eoarch; /* End of archive portion */
- char *eoname; /* End of member portion */
- GNode *mem; /* Node for member */
- static char *copy[] = { /* Variables to be copied from the member node */
- TARGET, /* Must be first */
- PREFIX, /* Must be second */
- };
- char *vals[sizeof(copy)/sizeof(copy[0])];
- int i; /* Index into copy and vals */
- char *cp; /* Suffix for member */
- Suff *ms; /* Suffix descriptor for member */
- char *name; /* Start of member's name */
-
- /*
- * The node is an archive(member) pair. so we must find a
- * suffix for both of them.
- */
- eoarch = index (gn->name, '(');
- eoname = index (eoarch, ')');
-
- *eoname = '\0'; /* Nuke parentheses during suffix search */
- *eoarch = '\0'; /* So a suffix can be found */
-
- name = eoarch + 1;
-
- /*
- * To simplify things, call Suff_FindDeps recursively on the member now,
- * so we can simply compare the member's .PREFIX and .TARGET variables
- * to locate its suffix. This allows us to figure out the suffix to
- * use for the archive without having to do a quadratic search over the
- * suffix list, backtracking for each one...
- */
- mem = Targ_FindNode(name, TARG_CREATE);
- Suff_FindDeps(mem);
-
- /*
- * Create the link between the two nodes right off
- */
- if (Lst_Member(gn->children, (ClientData)mem) == NILLNODE) {
- (void)Lst_AtEnd(gn->children, (ClientData)mem);
- (void)Lst_AtEnd(mem->parents, (ClientData)gn);
- gn->unmade += 1;
- }
-
- /*
- * Copy in the variables from the member node to this one.
- */
- for (i = (sizeof(copy)/sizeof(copy[0]))-1; i >= 0; i--) {
- vals[i] = Var_Value(copy[i], mem);
- Var_Set(copy[i], vals[i], gn);
- }
-
- ms = mem->suffix;
- if (ms == NULL) {
- /*
- * Didn't know what it was -- use .NULL suffix if not in make mode
- */
- if (DEBUG(SUFF)) {
- printf("using null suffix\n");
- }
- ms = suffNull;
- }
-
-
- /*
- * Set the other two local variables required for this target.
- */
- Var_Set (MEMBER, name, gn);
- Var_Set (ARCHIVE, gn->name, gn);
-
- if (ms != NULL) {
- /*
- * Member has a known suffix, so look for a transformation rule from
- * it to a possible suffix of the archive. Rather than searching
- * through the entire list, we just look at suffixes to which the
- * member's suffix may be transformed...
- */
- LstNode ln;
-
- /*
- * Use first matching suffix...
- */
- ln = Lst_Find(ms->parents, eoarch, SuffSuffIsSuffixP);
-
- if (ln != NILLNODE) {
- /*
- * Got one -- apply it
- */
- if (!SuffApplyTransform(gn, mem, (Suff *)Lst_Datum(ln), ms) &&
- DEBUG(SUFF))
- {
- printf("\tNo transformation from %s -> %s\n",
- ms->name, ((Suff *)Lst_Datum(ln))->name);
- }
- }
- }
-
- /*
- * Replace the opening and closing parens now we've no need of the separate
- * pieces.
- */
- *eoarch = '('; *eoname = ')';
-
- /*
- * Pretend gn appeared to the left of a dependency operator so
- * the user needn't provide a transformation from the member to the
- * archive.
- */
- if (OP_NOP(gn->type)) {
- gn->type |= OP_DEPENDS;
- }
-
- /*
- * Flag the member as such so we remember to look in the archive for
- * its modification time.
- */
- mem->type |= OP_MEMBER;
- }
-
- /*-
- *-----------------------------------------------------------------------
- * SuffFindNormalDeps --
- * Locate implicit dependencies for regular targets.
- *
- * Results:
- * None.
- *
- * Side Effects:
- * Same as Suff_FindDeps...
- *
- *-----------------------------------------------------------------------
- */
- static void
- SuffFindNormalDeps(gn)
- GNode *gn; /* Node for which to find sources */
- {
- char *eoname; /* End of name */
- char *sopref; /* Start of prefix */
- Suff *s; /* Current suffix */
- LstNode ln; /* Next suffix node to check */
- Lst srcs; /* List of sources at which to look */
- Lst targs; /* List of targets to which things can be
- * transformed. They all have the same file,
- * but different suff and pref fields */
- Src *bottom; /* Start of found transformation path */
- Src *src; /* General Src pointer */
- char *pref; /* Prefix to use */
- Src *targ; /* General Src target pointer */
-
-
- eoname = gn->name + strlen(gn->name);
-
- sopref = gn->name;
-
- /*
- * Begin at the beginning...
- */
- ln = Lst_First(sufflist);
- srcs = Lst_Init(FALSE);
- targs = Lst_Init(FALSE);
-
- /*
- * We're caught in a catch-22 here. On the one hand, we want to use any
- * transformation implied by the target's sources, but we can't examine
- * the sources until we've expanded any variables/wildcards they may hold,
- * and we can't do that until we've set up the target's local variables
- * and we can't do that until we know what the proper suffix for the
- * target is (in case there are two suffixes one of which is a suffix of
- * the other) and we can't know that until we've found its implied
- * source, which we may not want to use if there's an existing source
- * that implies a different transformation.
- *
- * In an attempt to get around this, which may not work all the time,
- * but should work most of the time, we look for implied sources first,
- * checking transformations to all possible suffixes of the target,
- * use what we find to set the target's local variables, expand the
- * children, then look for any overriding transformations they imply.
- * Should we find one, we discard the one we found before.
- */
- while(ln != NILLNODE) {
- /*
- * Look for next possible suffix...
- */
- ln = Lst_FindFrom(sufflist, ln, eoname, SuffSuffIsSuffixP);
-
- if (ln != NILLNODE) {
- int prefLen; /* Length of the prefix */
- Src *targ;
-
- /*
- * Allocate a Src structure to which things can be transformed
- */
- targ = (Src *)emalloc(sizeof(Src));
- targ->file = strdup(gn->name);
- targ->suff = (Suff *)Lst_Datum(ln);
- targ->node = gn;
- targ->parent = (Src *)NULL;
-
- /*
- * Allocate room for the prefix, whose end is found by subtracting
- * the length of the suffix from the end of the name.
- */
- prefLen = (eoname - targ->suff->nameLen) - sopref;
- targ->pref = emalloc(prefLen + 1);
- bcopy(sopref, targ->pref, prefLen);
- targ->pref[prefLen] = '\0';
-
- /*
- * Add nodes from which the target can be made
- */
- SuffAddLevel(srcs, targ);
-
- /*
- * Record the target so we can nuke it
- */
- (void)Lst_AtEnd(targs, (ClientData)targ);
-
- /*
- * Search from this suffix's successor...
- */
- ln = Lst_Succ(ln);
- }
- }
-
- /*
- * Handle target of unknown suffix...
- */
- if (Lst_IsEmpty(targs) && suffNull != NULL) {
- if (DEBUG(SUFF)) {
- printf("\tNo known suffix on %s. Using .NULL suffix\n", gn->name);
- }
-
- targ = (Src *)emalloc(sizeof(Src));
- targ->file = strdup(gn->name);
- targ->suff = suffNull;
- targ->node = gn;
- targ->parent = (Src *)NULL;
- targ->pref = strdup(sopref);
-
- SuffAddLevel(srcs, targ);
- (void)Lst_AtEnd(targs, (ClientData)targ);
- }
-
- /*
- * Using the list of possible sources built up from the target suffix(es),
- * try and find an existing file/target that matches.
- */
- bottom = SuffFindThem(srcs);
-
- if (bottom == (Src *)NULL) {
- /*
- * No known transformations -- use the first suffix found for setting
- * the local variables.
- */
- if (!Lst_IsEmpty(targs)) {
- targ = (Src *)Lst_Datum(Lst_First(targs));
- } else {
- targ = (Src *)NULL;
- }
- } else {
- /*
- * Work up the transformation path to find the suffix of the
- * target to which the transformation was made.
- */
- for (targ = bottom; targ->parent != NULL; targ = targ->parent) {
- ;
- }
- }
-
- /*
- * The .TARGET variable we always set to be the name at this point,
- * since it's only set to the path if the thing is only a source and
- * if it's only a source, it doesn't matter what we put here as far
- * as expanding sources is concerned, since it has none...
- */
- Var_Set(TARGET, gn->name, gn);
-
- pref = (targ != NULL) ? targ->pref : gn->name;
- Var_Set(PREFIX, pref, gn);
-
- /*
- * Now we've got the important local variables set, expand any sources
- * that still contain variables or wildcards in their names.
- */
- Lst_ForEach(gn->children, SuffExpandChildren, (ClientData)gn);
-
- if (targ == NULL) {
- if (DEBUG(SUFF)) {
- printf("\tNo valid suffix on %s\n", gn->name);
- }
-
- sfnd_abort:
- /*
- * Deal with finding the thing on the default search path if the
- * node is only a source (not on the lhs of a dependency operator
- * or [XXX] it has neither children or commands).
- */
- if (OP_NOP(gn->type) ||
- (Lst_IsEmpty(gn->children) && Lst_IsEmpty(gn->commands)))
- {
- gn->path = Dir_FindFile(gn->name,
- (targ == NULL ? dirSearchPath :
- targ->suff->searchPath));
- if (gn->path != NULL) {
- Var_Set(TARGET, gn->path, gn);
-
- if (targ != NULL) {
- /*
- * Suffix known for the thing -- trim the suffix off
- * the path to form the proper .PREFIX variable.
- */
- int len = strlen(gn->path);
- char savec;
-
- gn->suffix = targ->suff;
-
- savec = gn->path[len-targ->suff->nameLen];
- gn->path[len-targ->suff->nameLen] = '\0';
-
- Var_Set(PREFIX, gn->path, gn);
-
- gn->path[len-targ->suff->nameLen] = savec;
- } else {
- /*
- * The .PREFIX gets the full path if the target has
- * no known suffix.
- */
- gn->suffix = NULL;
-
- Var_Set(PREFIX, gn->path, gn);
- }
- }
- } else {
- /*
- * Not appropriate to search for the thing -- set the
- * path to be the name so Dir_MTime won't go grovelling for
- * it.
- */
- gn->suffix = (targ == NULL) ? NULL : targ->suff;
- gn->path = gn->name;
- }
-
- goto sfnd_return;
- }
-
- /*
- * If the suffix indicates that the target is a library, mark that in
- * the node's type field.
- */
- if (targ->suff->flags & SUFF_LIBRARY) {
- gn->type |= OP_LIB;
- }
-
- /*
- * Check for overriding transformation rule implied by sources
- */
- if (!Lst_IsEmpty(gn->children)) {
- src = SuffFindCmds(targ);
-
- if (src != (Src *)NULL) {
- /*
- * Free up all the Src structures in the transformation path
- * up to, but not including, the parent node.
- */
- while (bottom && bottom->parent != NULL) {
- Src *p = bottom->parent;
-
- SuffFreeSrc(bottom);
- bottom = p;
- }
- bottom = src;
- }
- }
-
- if (bottom == NULL) {
- /*
- * No idea from where it can come -- return now.
- */
- goto sfnd_abort;
- }
-
- /*
- * We now have a list of Src structures headed by 'bottom' and linked via
- * their 'parent' pointers. What we do next is create links between
- * source and target nodes (which may or may not have been created)
- * and set the necessary local variables in each target. The
- * commands for each target are set from the commands of the
- * transformation rule used to get from the src suffix to the targ
- * suffix. Note that this causes the commands list of the original
- * node, gn, to be replaced by the commands of the final
- * transformation rule. Also, the unmade field of gn is incremented.
- * Etc.
- */
- if (bottom->node == NILGNODE) {
- bottom->node = Targ_FindNode(bottom->file, TARG_CREATE);
- }
-
- for (src = bottom; src->parent != (Src *)NULL; src = src->parent) {
- targ = src->parent;
-
- src->node->suffix = src->suff;
-
- if (targ->node == NILGNODE) {
- targ->node = Targ_FindNode(targ->file, TARG_CREATE);
- }
-
- SuffApplyTransform(targ->node, src->node,
- targ->suff, src->suff);
-
- if (targ->node != gn) {
- /*
- * Finish off the dependency-search process for any nodes
- * between bottom and gn (no point in questing around the
- * filesystem for their implicit source when it's already
- * known). Note that the node can't have any sources that
- * need expanding, since SuffFindThem will stop on an existing
- * node, so all we need to do is set the standard and System V
- * variables.
- */
- targ->node->type |= OP_DEPS_FOUND;
-
- Var_Set(PREFIX, targ->pref, targ->node);
-
- Var_Set(TARGET, targ->node->name, targ->node);
- }
- }
-
- gn->suffix = src->suff;
-
- /*
- * So Dir_MTime doesn't go questing for it...
- */
- gn->path = gn->name;
-
- /*
- * Nuke the transformation path and the Src structures left over in the
- * two lists.
- */
- SuffFreeSrc(bottom);
-
- sfnd_return:
- Lst_Destroy(srcs, SuffFreeSrc);
- Lst_Destroy(targs, SuffFreeSrc);
-
- }
-
-
-
-
- /*-
- *-----------------------------------------------------------------------
- * Suff_FindDeps --
- * Find implicit sources for the target described by the graph node
- * gn
- *
- * Results:
- * Nothing.
- *
- * Side Effects:
- * Nodes are added to the graph below the passed-in node. The nodes
- * are marked to have their IMPSRC variable filled in. The
- * PREFIX variable is set for the given node and all its
- * implied children.
- *
- * Notes:
- * The path found by this target is the shortest path in the
- * transformation graph, which may pass through non-existent targets,
- * to an existing target. The search continues on all paths from the
- * root suffix until a file is found. I.e. if there's a path
- * .o -> .c -> .l -> .l,v from the root and the .l,v file exists but
- * the .c and .l files don't, the search will branch out in
- * all directions from .o and again from all the nodes on the
- * next level until the .l,v node is encountered.
- *
- *-----------------------------------------------------------------------
- */
- void
- Suff_FindDeps (gn)
- GNode *gn; /* node we're dealing with */
- {
- if (gn->type & OP_DEPS_FOUND) {
- /*
- * If dependencies already found, no need to do it again...
- */
- return;
- } else {
- gn->type |= OP_DEPS_FOUND;
- }
-
- if (DEBUG(SUFF)) {
- printf ("Suff_FindDeps (%s)\n", gn->name);
- }
-
- if (gn->type & OP_ARCHV) {
- SuffFindArchiveDeps(gn);
- } else if (gn->type & OP_LIB) {
- /*
- * If the node is a library, it is the arch module's job to find it
- * and set the TARGET variable accordingly. We merely provide the
- * search path, assuming all libraries end in ".a" (if the suffix
- * hasn't been defined, there's nothing we can do for it, so we just
- * set the TARGET variable to the node's name in order to give it a
- * value).
- */
- LstNode ln;
- Suff *s;
-
- ln = Lst_Find (sufflist, (ClientData)LIBSUFF, SuffSuffHasNameP);
- if (ln != NILLNODE) {
- gn->suffix = s = (Suff *) Lst_Datum (ln);
- Arch_FindLib (gn, s->searchPath);
- } else {
- gn->suffix = NULL;
- Var_Set (TARGET, gn->name, gn);
- }
- /*
- * Because a library (-lfoo) target doesn't follow the standard
- * filesystem conventions, we don't set the regular variables for
- * the thing. .PREFIX is simply made empty...
- */
- Var_Set(PREFIX, "", gn);
- } else {
- SuffFindNormalDeps(gn);
- }
- }
-
- /*-
- *-----------------------------------------------------------------------
- * Suff_SetNull --
- * Define which suffix is the null suffix.
- *
- * Results:
- * None.
- *
- * Side Effects:
- * 'suffNull' is altered.
- *
- * Notes:
- * Need to handle the changing of the null suffix gracefully so the
- * old transformation rules don't just go away.
- *
- *-----------------------------------------------------------------------
- */
- void
- Suff_SetNull(name)
- char *name; /* Name of null suffix */
- {
- Suff *s;
- LstNode ln;
-
- ln = Lst_Find(sufflist, (ClientData)name, SuffSuffHasNameP);
- if (ln != NILLNODE) {
- s = (Suff *)Lst_Datum(ln);
- if (suffNull != (Suff *)NULL) {
- suffNull->flags &= ~SUFF_NULL;
- }
- s->flags |= SUFF_NULL;
- /*
- * XXX: Here's where the transformation mangling would take place
- */
- suffNull = s;
- } else {
- Parse_Error (PARSE_WARNING, "Desired null suffix %s not defined.",
- name);
- }
- }
-
- /*-
- *-----------------------------------------------------------------------
- * Suff_Init --
- * Initialize suffixes module
- *
- * Results:
- * None
- *
- * Side Effects:
- * Many
- *-----------------------------------------------------------------------
- */
- void
- Suff_Init ()
- {
- sufflist = Lst_Init (FALSE);
- transforms = Lst_Init (FALSE);
-
- sNum = 0;
- /*
- * Create null suffix for single-suffix rules (POSIX). The thing doesn't
- * actually go on the suffix list or everyone will think that's its
- * suffix.
- */
- emptySuff = suffNull = (Suff *) emalloc (sizeof (Suff));
-
- suffNull->name = strdup ("");
- suffNull->nameLen = 0;
- suffNull->searchPath = Lst_Init (FALSE);
- suffNull->children = Lst_Init (FALSE);
- suffNull->parents = Lst_Init (FALSE);
- suffNull->sNum = sNum++;
- suffNull->flags = SUFF_NULL;
-
- }
-
- /********************* DEBUGGING FUNCTIONS **********************/
-
- static int SuffPrintName(s) Suff *s; {printf ("%s ", s->name); return (0);}
-
- static int
- SuffPrintSuff (s)
- Suff *s;
- {
- int flags;
- int flag;
-
- printf ("# `%s'", s->name);
-
- flags = s->flags;
- if (flags) {
- fputs (" (", stdout);
- while (flags) {
- flag = 1 << (ffs(flags) - 1);
- flags &= ~flag;
- switch (flag) {
- case SUFF_NULL:
- printf ("NULL");
- break;
- case SUFF_INCLUDE:
- printf ("INCLUDE");
- break;
- case SUFF_LIBRARY:
- printf ("LIBRARY");
- break;
- }
- putc(flags ? '|' : ')', stdout);
- }
- }
- putc ('\n', stdout);
- printf ("#\tTo: ");
- Lst_ForEach (s->parents, SuffPrintName, (ClientData)0);
- putc ('\n', stdout);
- printf ("#\tFrom: ");
- Lst_ForEach (s->children, SuffPrintName, (ClientData)0);
- putc ('\n', stdout);
- printf ("#\tSearch Path: ");
- Dir_PrintPath (s->searchPath);
- putc ('\n', stdout);
- return (0);
- }
-
- static int
- SuffPrintTrans (t)
- GNode *t;
- {
- extern int Targ_PrintCmd();
-
- printf ("%-16s: ", t->name);
- Targ_PrintType (t->type);
- putc ('\n', stdout);
- Lst_ForEach (t->commands, Targ_PrintCmd, (ClientData)0);
- putc ('\n', stdout);
- return(0);
- }
-
- Suff_PrintAll()
- {
- printf ("#*** Suffixes:\n");
- Lst_ForEach (sufflist, SuffPrintSuff, (ClientData)0);
-
- printf ("#*** Transformations:\n");
- Lst_ForEach (transforms, SuffPrintTrans, (ClientData)0);
- }
-
-