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NetBSD/usr.bin/make/suff.c
dsl 07c6949e33 Don't (try to) use files marked .OPTIONAL as implicit sources. 
There existance hasn't been verified at the point the implicit rules are
checked.
2006-01-08 12:59:52 +00:00

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/* $NetBSD: suff.c,v 1.52 2006/01/08 12:59:52 dsl Exp $ */
/*
* Copyright (c) 1988, 1989, 1990, 1993
* The Regents of the University of California. 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. 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.
*/
/*
* 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 MAKE_NATIVE
static char rcsid[] = "$NetBSD: suff.c,v 1.52 2006/01/08 12:59:52 dsl Exp $";
#else
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)suff.c 8.4 (Berkeley) 3/21/94";
#else
__RCSID("$NetBSD: suff.c,v 1.52 2006/01/08 12:59:52 dsl Exp $");
#endif
#endif /* not lint */
#endif
/*-
* 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_End Cleanup the module
*
* 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.
*
* Suff_FindPath Return the appropriate path to search in
* order to find the node.
*/
#include <stdio.h>
#include "make.h"
#include "hash.h"
#include "dir.h"
static Lst sufflist; /* Lst of suffixes */
#ifdef CLEANUP
static Lst suffClean; /* Lst of suffixes to be cleaned */
#endif
static Lst srclist; /* Lst of sources */
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 */
int refCount; /* Reference count of list membership */
Lst parents; /* Suffixes we have a transformation to */
Lst children; /* Suffixes we have a transformation from */
Lst ref; /* List of lists this suffix is referenced */
} Suff;
/*
* for SuffSuffIsSuffix
*/
typedef struct {
char *ename; /* The end of the name */
int len; /* Length of the name */
} SuffixCmpData;
/*
* 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) */
#ifdef DEBUG_SRC
Lst cp; /* Debug; children list */
#endif
} Src;
/*
* A structure for passing more than one argument to the Lst-library-invoked
* function...
*/
typedef struct {
Lst l;
Src *s;
} LstSrc;
typedef struct {
GNode **gn;
Suff *s;
Boolean r;
} GNodeSuff;
static Suff *suffNull; /* The NULL suffix for this run */
static Suff *emptySuff; /* The empty suffix required for POSIX
* single-suffix transformation rules */
static char *SuffStrIsPrefix(char *, char *);
static char *SuffSuffIsSuffix(Suff *, SuffixCmpData *);
static int SuffSuffIsSuffixP(ClientData, ClientData);
static int SuffSuffHasNameP(ClientData, ClientData);
static int SuffSuffIsPrefix(ClientData, ClientData);
static int SuffGNHasNameP(ClientData, ClientData);
static void SuffUnRef(ClientData, ClientData);
static void SuffFree(ClientData);
static void SuffInsert(Lst, Suff *);
static void SuffRemove(Lst, Suff *);
static Boolean SuffParseTransform(char *, Suff **, Suff **);
static int SuffRebuildGraph(ClientData, ClientData);
static int SuffScanTargets(ClientData, ClientData);
static int SuffAddSrc(ClientData, ClientData);
static int SuffRemoveSrc(Lst);
static void SuffAddLevel(Lst, Src *);
static Src *SuffFindThem(Lst, Lst);
static Src *SuffFindCmds(Src *, Lst);
static int SuffExpandChildren(LstNode, GNode *);
static Boolean SuffApplyTransform(GNode *, GNode *, Suff *, Suff *);
static void SuffFindDeps(GNode *, Lst);
static void SuffFindArchiveDeps(GNode *, Lst);
static void SuffFindNormalDeps(GNode *, Lst);
static int SuffPrintName(ClientData, ClientData);
static int SuffPrintSuff(ClientData, ClientData);
static int SuffPrintTrans(ClientData, ClientData);
/*************** Lst Predicates ****************/
/*-
*-----------------------------------------------------------------------
* SuffStrIsPrefix --
* See if pref is a prefix of str.
*
* Input:
* pref possible prefix
* str string to check
*
* Results:
* NULL if it ain't, pointer to character in str after prefix if so
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
static char *
SuffStrIsPrefix(char *pref, char *str)
{
while (*str && *pref == *str) {
pref++;
str++;
}
return (*pref ? NULL : str);
}
/*-
*-----------------------------------------------------------------------
* SuffSuffIsSuffix --
* See if suff is a suffix of str. sd->ename should point to THE END
* of the string to check. (THE END == the null byte)
*
* Input:
* s possible suffix
* sd string to examine
*
* Results:
* NULL if it ain't, pointer to character in str before suffix if
* it is.
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
static char *
SuffSuffIsSuffix(Suff *s, SuffixCmpData *sd)
{
char *p1; /* Pointer into suffix name */
char *p2; /* Pointer into string being examined */
if (sd->len < s->nameLen)
return NULL; /* this string is shorter than the suffix */
p1 = s->name + s->nameLen;
p2 = sd->ename;
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.
*
*-----------------------------------------------------------------------
*/
static int
SuffSuffIsSuffixP(ClientData s, ClientData sd)
{
return(!SuffSuffIsSuffix((Suff *)s, (SuffixCmpData *)sd));
}
/*-
*-----------------------------------------------------------------------
* SuffSuffHasNameP --
* Callback procedure for finding a suffix based on its name. Used by
* Suff_GetPath.
*
* Input:
* s Suffix to check
* sd Desired name
*
* Results:
* 0 if the suffix is of the given name. non-zero otherwise.
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
static int
SuffSuffHasNameP(ClientData s, ClientData sname)
{
return (strcmp((char *)sname, ((Suff *)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...
*
* Input:
* s suffix to compare
* str string to examine
*
* Results:
* 0 if s is a prefix of str. non-zero otherwise
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
static int
SuffSuffIsPrefix(ClientData s, ClientData str)
{
return (SuffStrIsPrefix(((Suff *)s)->name, (char *)str) == NULL ? 1 : 0);
}
/*-
*-----------------------------------------------------------------------
* SuffGNHasNameP --
* See if the graph node has the desired name
*
* Input:
* gn current node we're looking at
* name name we're looking for
*
* Results:
* 0 if it does. non-zero if it doesn't
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
static int
SuffGNHasNameP(ClientData gn, ClientData name)
{
return (strcmp((char *)name, ((GNode *)gn)->name));
}
/*********** Maintenance Functions ************/
static void
SuffUnRef(ClientData lp, ClientData sp)
{
Lst l = (Lst) lp;
LstNode ln = Lst_Member(l, sp);
if (ln != NILLNODE) {
Lst_Remove(l, ln);
((Suff *)sp)->refCount--;
}
}
/*-
*-----------------------------------------------------------------------
* SuffFree --
* Free up all memory associated with the given suffix structure.
*
* Results:
* none
*
* Side Effects:
* the suffix entry is detroyed
*-----------------------------------------------------------------------
*/
static void
SuffFree(ClientData sp)
{
Suff *s = (Suff *)sp;
if (s == suffNull)
suffNull = NULL;
if (s == emptySuff)
emptySuff = NULL;
#ifdef notdef
/* We don't delete suffixes in order, so we cannot use this */
if (s->refCount)
Punt("Internal error deleting suffix `%s' with refcount = %d", s->name,
s->refCount);
#endif
Lst_Destroy(s->ref, NOFREE);
Lst_Destroy(s->children, NOFREE);
Lst_Destroy(s->parents, NOFREE);
Lst_Destroy(s->searchPath, Dir_Destroy);
free(s->name);
free(s);
}
/*-
*-----------------------------------------------------------------------
* SuffRemove --
* Remove the suffix into the list
*
* Results:
* None
*
* Side Effects:
* The reference count for the suffix is decremented and the
* suffix is possibly freed
*-----------------------------------------------------------------------
*/
static void
SuffRemove(Lst l, Suff *s)
{
SuffUnRef((ClientData) l, (ClientData) s);
if (s->refCount == 0) {
SuffUnRef((ClientData) sufflist, (ClientData) s);
SuffFree((ClientData) s);
}
}
/*-
*-----------------------------------------------------------------------
* SuffInsert --
* Insert the suffix into the list keeping the list ordered by suffix
* numbers.
*
* Input:
* l the list where in s should be inserted
* s the suffix to insert
*
* Results:
* None
*
* Side Effects:
* The reference count of the suffix is incremented
*-----------------------------------------------------------------------
*/
static void
SuffInsert(Lst l, Suff *s)
{
LstNode ln; /* current element in l we're examining */
Suff *s2 = NULL; /* 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);
s->refCount++;
(void)Lst_AtEnd(s->ref, (ClientData) l);
} 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);
s->refCount++;
(void)Lst_AtEnd(s->ref, (ClientData) l);
} 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(void)
{
#ifdef CLEANUP
Lst_Concat(suffClean, sufflist, LST_CONCLINK);
#endif
sufflist = Lst_Init(FALSE);
sNum = 0;
suffNull = emptySuff;
}
/*-
*-----------------------------------------------------------------------
* SuffParseTransform --
* Parse a transformation string to find its two component suffixes.
*
* Input:
* str String being parsed
* srcPtr Place to store source of trans.
* targPtr Place to store target of trans.
*
* Results:
* TRUE if the string is a valid transformation and FALSE otherwise.
*
* Side Effects:
* The passed pointers are overwritten.
*
*-----------------------------------------------------------------------
*/
static Boolean
SuffParseTransform(char *str, Suff **srcPtr, Suff **targPtr)
{
LstNode srcLn; /* element in suffix list of trans source*/
Suff *src; /* Source of transformation */
LstNode targLn; /* element in suffix list of trans target*/
char *str2; /* Extra pointer (maybe target suffix) */
LstNode singleLn; /* element in suffix list of any suffix
* that exactly matches str */
Suff *single = NULL;/* 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.
*/
for (;;) {
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
*
*
* Input:
* str string to check
*
* Results:
* TRUE if the string is a concatenation of two known suffixes.
* FALSE otherwise
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
Boolean
Suff_IsTransform(char *str)
{
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
*
* Input:
* line name of transformation to add
*
* 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(char *line)
{
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
*
* Input:
* gnp Node for transformation
* dummy Node for transformation
*
* Results:
* === 0
*
* Side Effects:
* If the node has no commands or children, the children and parents
* lists of the affected suffixes are altered.
*
*-----------------------------------------------------------------------
*/
int
Suff_EndTransform(ClientData gnp, ClientData dummy)
{
GNode *gn = (GNode *)gnp;
if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts))
gn = (GNode *)Lst_Datum(Lst_Last(gn->cohorts));
if ((gn->type & OP_TRANSFORM) && Lst_IsEmpty(gn->commands) &&
Lst_IsEmpty(gn->children))
{
Suff *s, *t;
/*
* SuffParseTransform() may fail for special rules which are not
* actual transformation rules. (e.g. .DEFAULT)
*/
if (SuffParseTransform(gn->name, &s, &t)) {
Lst p;
if (DEBUG(SUFF)) {
printf("deleting transformation from `%s' to `%s'\n",
s->name, t->name);
}
/*
* Store s->parents because s could be deleted in SuffRemove
*/
p = s->parents;
/*
* 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...
*/
SuffRemove(t->children, s);
/*
* Remove the target from the source's parents list
*/
SuffRemove(p, t);
}
} else if ((gn->type & OP_TRANSFORM) && DEBUG(SUFF)) {
printf("transformation %s complete\n", gn->name);
}
return(dummy ? 0 : 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.
*
* Input:
* transformp Transformation to test
* sp Suffix to rebuild
*
* 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(ClientData transformp, ClientData sp)
{
GNode *transform = (GNode *)transformp;
Suff *s = (Suff *)sp;
char *cp;
LstNode ln;
Suff *s2;
SuffixCmpData sd;
/*
* First see if it is a transformation from this suffix.
*/
cp = SuffStrIsPrefix(s->name, transform->name);
if (cp != 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?
*/
sd.len = strlen(transform->name);
sd.ename = transform->name + sd.len;
cp = SuffSuffIsSuffix(s, &sd);
if (cp != 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);
}
/*-
*-----------------------------------------------------------------------
* SuffScanTargets --
* Called from Suff_AddSuffix via Lst_ForEach to search through the
* list of existing targets and find if any of the existing targets
* can be turned into a transformation rule.
*
* Results:
* 1 if a new main target has been selected, 0 otherwise.
*
* Side Effects:
* If such a target is found and the target is the current main
* target, the main target is set to NULL and the next target
* examined (if that exists) becomes the main target.
*
*-----------------------------------------------------------------------
*/
static int
SuffScanTargets(ClientData targetp, ClientData gsp)
{
GNode *target = (GNode *)targetp;
GNodeSuff *gs = (GNodeSuff *)gsp;
Suff *s, *t;
char *ptr;
if (*gs->gn == NILGNODE && gs->r && (target->type & OP_NOTARGET) == 0) {
*gs->gn = target;
Targ_SetMain(target);
return 1;
}
if (target->type == OP_TRANSFORM)
return 0;
if ((ptr = strstr(target->name, gs->s->name)) == NULL ||
ptr == target->name)
return 0;
if (SuffParseTransform(target->name, &s, &t)) {
if (*gs->gn == target) {
gs->r = TRUE;
*gs->gn = NILGNODE;
Targ_SetMain(NILGNODE);
}
Lst_Destroy(target->children, NOFREE);
target->children = Lst_Init(FALSE);
target->type = OP_TRANSFORM;
/*
* 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 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...
*
* Input:
* str the name of the suffix to add
*
* 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.
* The mainNode passed can be modified if a target mutated into a
* transform and that target happened to be the main target.
*-----------------------------------------------------------------------
*/
void
Suff_AddSuffix(char *str, GNode **gn)
{
Suff *s; /* new suffix descriptor */
LstNode ln;
GNodeSuff gs;
ln = Lst_Find(sufflist, (ClientData)str, SuffSuffHasNameP);
if (ln == NILLNODE) {
s = emalloc(sizeof(Suff));
s->name = estrdup(str);
s->nameLen = strlen(s->name);
s->searchPath = Lst_Init(FALSE);
s->children = Lst_Init(FALSE);
s->parents = Lst_Init(FALSE);
s->ref = Lst_Init(FALSE);
s->sNum = sNum++;
s->flags = 0;
s->refCount = 1;
(void)Lst_AtEnd(sufflist, (ClientData)s);
/*
* We also look at our existing targets list to see if adding
* this suffix will make one of our current targets mutate into
* a suffix rule. This is ugly, but other makes treat all targets
* that start with a . as suffix rules.
*/
gs.gn = gn;
gs.s = s;
gs.r = FALSE;
Lst_ForEach(Targ_List(), SuffScanTargets, (ClientData) &gs);
/*
* 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(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 preceded 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(void)
{
Suff *s;
LstNode ln;
char *ptr;
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", ptr = Dir_MakeFlags("-I", inIncludes), VAR_GLOBAL, 0);
free(ptr);
Var_Set(".LIBS", ptr = Dir_MakeFlags("-L", inLibs), VAR_GLOBAL, 0);
free(ptr);
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.
*
* Input:
* sname Name of the suffix to mark
*
* Results:
* None.
*
* Side Effects:
* The SUFF_INCLUDE bit is set in the suffix's flags field
*
*-----------------------------------------------------------------------
*/
void
Suff_AddInclude(char *sname)
{
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.
*
* Input:
* sname Name of the suffix to mark
*
* Results:
* None.
*
* Side Effects:
* The SUFF_LIBRARY bit is set in the suffix's flags field
*
*-----------------------------------------------------------------------
*/
void
Suff_AddLib(char *sname)
{
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 *********/
/*-
*-----------------------------------------------------------------------
* 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.
*
* Input:
* sp suffix for which to create a Src structure
* lsp list and parent for the new Src
*
* Results:
* always returns 0
*
* Side Effects:
* A Src structure is created and tacked onto the end of the list
*-----------------------------------------------------------------------
*/
static int
SuffAddSrc(ClientData sp, ClientData lsp)
{
Suff *s = (Suff *)sp;
LstSrc *ls = (LstSrc *)lsp;
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 = emalloc(sizeof(Src));
s2->file = estrdup(targ->pref);
s2->pref = targ->pref;
s2->parent = targ;
s2->node = NILGNODE;
s2->suff = s;
s->refCount++;
s2->children = 0;
targ->children += 1;
(void)Lst_AtEnd(ls->l, (ClientData)s2);
#ifdef DEBUG_SRC
s2->cp = Lst_Init(FALSE);
Lst_AtEnd(targ->cp, (ClientData) s2);
printf("1 add %x %x to %x:", targ, s2, ls->l);
Lst_ForEach(ls->l, PrintAddr, (ClientData) 0);
printf("\n");
#endif
}
s2 = 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;
s->refCount++;
s2->children = 0;
targ->children += 1;
(void)Lst_AtEnd(ls->l, (ClientData)s2);
#ifdef DEBUG_SRC
s2->cp = Lst_Init(FALSE);
Lst_AtEnd(targ->cp, (ClientData) s2);
printf("2 add %x %x to %x:", targ, s2, ls->l);
Lst_ForEach(ls->l, PrintAddr, (ClientData) 0);
printf("\n");
#endif
return(0);
}
/*-
*-----------------------------------------------------------------------
* SuffAddLevel --
* Add all the children of targ as Src structures to the given list
*
* Input:
* l list to which to add the new level
* targ Src structure to use as the parent
*
* Results:
* None
*
* Side Effects:
* Lots of structures are created and added to the list
*-----------------------------------------------------------------------
*/
static void
SuffAddLevel(Lst l, Src *targ)
{
LstSrc ls;
ls.s = targ;
ls.l = l;
Lst_ForEach(targ->suff->children, SuffAddSrc, (ClientData)&ls);
}
/*-
*----------------------------------------------------------------------
* SuffRemoveSrc --
* Free all src structures in list that don't have a reference count
*
* Results:
* Ture if an src was removed
*
* Side Effects:
* The memory is free'd.
*----------------------------------------------------------------------
*/
static int
SuffRemoveSrc(Lst l)
{
LstNode ln;
Src *s;
int t = 0;
if (Lst_Open(l) == FAILURE) {
return 0;
}
#ifdef DEBUG_SRC
printf("cleaning %lx: ", (unsigned long) l);
Lst_ForEach(l, PrintAddr, (ClientData) 0);
printf("\n");
#endif
while ((ln = Lst_Next(l)) != NILLNODE) {
s = (Src *)Lst_Datum(ln);
if (s->children == 0) {
free(s->file);
if (!s->parent)
free(s->pref);
else {
#ifdef DEBUG_SRC
LstNode ln = Lst_Member(s->parent->cp, (ClientData)s);
if (ln != NILLNODE)
Lst_Remove(s->parent->cp, ln);
#endif
--s->parent->children;
}
#ifdef DEBUG_SRC
printf("free: [l=%x] p=%x %d\n", l, s, s->children);
Lst_Destroy(s->cp, NOFREE);
#endif
Lst_Remove(l, ln);
free(s);
t |= 1;
Lst_Close(l);
return TRUE;
}
#ifdef DEBUG_SRC
else {
printf("keep: [l=%x] p=%x %d: ", l, s, s->children);
Lst_ForEach(s->cp, PrintAddr, (ClientData) 0);
printf("\n");
}
#endif
}
Lst_Close(l);
return t;
}
/*-
*-----------------------------------------------------------------------
* SuffFindThem --
* Find the first existing file/target in the list srcs
*
* Input:
* srcs list of Src structures to search through
*
* Results:
* The lowest structure in the chain of transformations
*
* Side Effects:
* None
*-----------------------------------------------------------------------
*/
static Src *
SuffFindThem(Lst srcs, Lst slst)
{
Src *s; /* current Src */
Src *rs; /* returned Src */
char *ptr;
rs = 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) {
#ifdef DEBUG_SRC
printf("remove %x from %x\n", s, srcs);
#endif
rs = s;
break;
}
if ((ptr = Dir_FindFile(s->file, s->suff->searchPath)) != NULL) {
rs = s;
#ifdef DEBUG_SRC
printf("remove %x from %x\n", s, srcs);
#endif
free(ptr);
break;
}
if (DEBUG(SUFF)) {
printf("not there\n");
}
SuffAddLevel(srcs, s);
Lst_AtEnd(slst, (ClientData) s);
}
if (DEBUG(SUFF) && rs) {
printf("got it\n");
}
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.
*
* Input:
* targ Src structure to play with
*
* 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(Src *targ, Lst slst)
{
LstNode ln; /* General-purpose list node */
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);
for (;;) {
ln = Lst_Next(t->children);
if (ln == NILLNODE) {
Lst_Close(t->children);
return NULL;
}
s = (GNode *)Lst_Datum(ln);
if (s->type & OP_OPTIONAL && Lst_IsEmpty(t->commands)) {
/*
* We haven't looked to see if .OPTIONAL files exist yet, so
* don't use one as the implicit source.
* This allows us to use .OPTIONAL in .depend files so make won't
* complain "don't know how to make xxx.h' when a dependant file
* has been moved/deleted.
*/
continue;
}
cp = strrchr(s->name, '/');
if (cp == NULL) {
cp = s->name;
} else {
cp++;
}
if (strncmp(cp, targ->pref, prefLen) != 0)
continue;
/*
* The node matches the prefix ok, see if it has a known
* suffix.
*/
ln = Lst_Find(sufflist, (ClientData)&cp[prefLen],
SuffSuffHasNameP);
if (ln == NILLNODE)
continue;
/*
* 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)
break;
}
/*
* 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 = emalloc(sizeof(Src));
ret->file = estrdup(s->name);
ret->pref = targ->pref;
ret->suff = suff;
suff->refCount++;
ret->parent = targ;
ret->node = s;
ret->children = 0;
targ->children += 1;
#ifdef DEBUG_SRC
ret->cp = Lst_Init(FALSE);
printf("3 add %x %x\n", targ, ret);
Lst_AtEnd(targ->cp, (ClientData) ret);
#endif
Lst_AtEnd(slst, (ClientData) ret);
if (DEBUG(SUFF)) {
printf("\tusing existing source %s\n", s->name);
}
return (ret);
}
/*-
*-----------------------------------------------------------------------
* SuffExpandChildren --
* Expand the names of any children of a given node that contain
* variable invocations or file wildcards into actual targets.
*
* Input:
* prevLN Child to examine
* pgn Parent node being processed
*
* 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(LstNode prevLN, GNode *pgn)
{
GNode *cgn = (GNode *)Lst_Datum(prevLN);
GNode *gn; /* New source 8) */
char *cp; /* Expanded value */
/*
* 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 (strchr(cgn->name, '$') != NULL) {
if (DEBUG(SUFF)) {
printf("Expanding \"%s\"...", cgn->name);
}
cp = Var_Subst(NULL, cgn->name, pgn, TRUE);
if (cp != 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++)
continue;
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(cp);
}
/*
* Now the source is expanded, remove it from the list of children to
* keep it from being processed.
*/
if (DEBUG(SUFF)) {
printf("\n");
}
return(1);
} else if (Dir_HasWildcards(cgn->name)) {
Lst explist; /* List of expansions */
/*
* Expand the word along the chosen path
*/
explist = Lst_Init(FALSE);
Dir_Expand(cgn->name, Suff_FindPath(cgn), explist);
while (!Lst_IsEmpty(explist)) {
/*
* Fetch next expansion off the list and find its GNode
*/
cp = (char *)Lst_DeQueue(explist);
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(explist, NOFREE);
/*
* Now the source is expanded, remove it from the list of children to
* keep it from being processed.
*/
if (DEBUG(SUFF)) {
printf("\n");
}
return(1);
}
return(0);
}
/*-
*-----------------------------------------------------------------------
* Suff_FindPath --
* Find a path along which to expand the node.
*
* If the word has a known suffix, use that path.
* If it has no known suffix, use the default system search path.
*
* Input:
* gn Node being examined
*
* Results:
* The appropriate path to search for the GNode.
*
* Side Effects:
* XXX: We could set the suffix here so that we don't have to scan
* again.
*
*-----------------------------------------------------------------------
*/
Lst
Suff_FindPath(GNode* gn)
{
Suff *suff = gn->suffix;
if (suff == NULL) {
SuffixCmpData sd; /* Search string data */
LstNode ln;
sd.len = strlen(gn->name);
sd.ename = gn->name + sd.len;
ln = Lst_Find(sufflist, (ClientData)&sd, SuffSuffIsSuffixP);
if (DEBUG(SUFF)) {
printf("Wildcard expanding \"%s\"...", gn->name);
}
if (ln != NILLNODE)
suff = (Suff *)Lst_Datum(ln);
/* XXX: Here we can save the suffix so we don't have to do this again */
}
if (suff != NULL) {
if (DEBUG(SUFF)) {
printf("suffix is \"%s\"...", suff->name);
}
return suff->searchPath;
} else {
/*
* Use default search path
*/
return dirSearchPath;
}
}
/*-
*-----------------------------------------------------------------------
* SuffApplyTransform --
* Apply a transformation rule, given the source and target nodes
* and suffixes.
*
* Input:
* tGn Target node
* sGn Source node
* t Target suffix
* s Source suffix
*
* 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(GNode *tGn, GNode *sGn, Suff *t, Suff *s)
{
LstNode ln, nln; /* General node */
char *tname; /* Name of transformation rule */
GNode *gn; /* Node for same */
/*
* 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;
/*
* 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);
while (ln != NILLNODE) {
if (SuffExpandChildren(ln, tGn)) {
nln = Lst_Succ(ln);
tGn->unmade--;
Lst_Remove(tGn->children, ln);
ln = nln;
} else
ln = Lst_Succ(ln);
}
/*
* 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.
*
* Input:
* gn Node for which to locate dependencies
*
* Results:
* None
*
* Side Effects:
* Same as Suff_FindDeps
*
*-----------------------------------------------------------------------
*/
static void
SuffFindArchiveDeps(GNode *gn, Lst slst)
{
char *eoarch; /* End of archive portion */
char *eoname; /* End of member portion */
GNode *mem; /* Node for member */
static const char *copy[] = {
/* Variables to be copied from the member node */
TARGET, /* Must be first */
PREFIX, /* Must be second */
};
int i; /* Index into copy and vals */
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 = strchr(gn->name, '(');
eoname = strchr(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);
SuffFindDeps(mem, slst);
/*
* Create the link between the two nodes right off
*/
(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--) {
char *p1;
Var_Set(copy[i], Var_Value(copy[i], mem, &p1), gn, 0);
if (p1)
free(p1);
}
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, 0);
Var_Set(ARCHIVE, gn->name, gn, 0);
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;
SuffixCmpData sd; /* Search string data */
/*
* Use first matching suffix...
*/
sd.len = eoarch - gn->name;
sd.ename = eoarch;
ln = Lst_Find(ms->parents, &sd, 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.
*
* Input:
* gn Node for which to find sources
*
* Results:
* None.
*
* Side Effects:
* Same as Suff_FindDeps...
*
*-----------------------------------------------------------------------
*/
static void
SuffFindNormalDeps(GNode *gn, Lst slst)
{
char *eoname; /* End of name */
char *sopref; /* Start of prefix */
LstNode ln, nln; /* 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 */
SuffixCmpData sd; /* Search string data */
sd.len = strlen(gn->name);
sd.ename = eoname = gn->name + sd.len;
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, &sd, SuffSuffIsSuffixP);
if (ln != NILLNODE) {
int prefLen; /* Length of the prefix */
/*
* Allocate a Src structure to which things can be transformed
*/
targ = emalloc(sizeof(Src));
targ->file = estrdup(gn->name);
targ->suff = (Suff *)Lst_Datum(ln);
targ->suff->refCount++;
targ->node = gn;
targ->parent = NULL;
targ->children = 0;
#ifdef DEBUG_SRC
targ->cp = Lst_Init(FALSE);
#endif
/*
* 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);
memcpy(targ->pref, sopref, 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 = emalloc(sizeof(Src));
targ->file = estrdup(gn->name);
targ->suff = suffNull;
targ->suff->refCount++;
targ->node = gn;
targ->parent = NULL;
targ->children = 0;
targ->pref = estrdup(sopref);
#ifdef DEBUG_SRC
targ->cp = Lst_Init(FALSE);
#endif
/*
* Only use the default suffix rules if we don't have commands
* defined for this gnode; traditional make programs used to
* not define suffix rules if the gnode had children but we
* don't do this anymore.
*/
if (Lst_IsEmpty(gn->commands))
SuffAddLevel(srcs, targ);
else {
if (DEBUG(SUFF))
printf("not ");
}
if (DEBUG(SUFF))
printf("adding suffix rules\n");
(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, slst);
if (bottom == 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 = 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)
continue;
}
Var_Set(TARGET, gn->path ? gn->path : gn->name, gn, 0);
pref = (targ != NULL) ? targ->pref : gn->name;
Var_Set(PREFIX, pref, gn, 0);
/*
* Now we've got the important local variables set, expand any sources
* that still contain variables or wildcards in their names.
*/
ln = Lst_First(gn->children);
while (ln != NILLNODE) {
if (SuffExpandChildren(ln, gn)) {
nln = Lst_Succ(ln);
gn->unmade--;
Lst_Remove(gn->children, ln);
ln = nln;
} else
ln = Lst_Succ(ln);
}
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. We
* always do that, not only if the node is only a source (not
* on the lhs of a dependency operator or [XXX] it has neither
* children or commands) as the old pmake did.
*/
if ((gn->type & (OP_PHONY|OP_NOPATH)) == 0) {
free(gn->path);
gn->path = Dir_FindFile(gn->name,
(targ == NULL ? dirSearchPath :
targ->suff->searchPath));
if (gn->path != NULL) {
char *ptr;
Var_Set(TARGET, gn->path, gn, 0);
if (targ != NULL) {
/*
* Suffix known for the thing -- trim the suffix off
* the path to form the proper .PREFIX variable.
*/
int savep = strlen(gn->path) - targ->suff->nameLen;
char savec;
if (gn->suffix)
gn->suffix->refCount--;
gn->suffix = targ->suff;
gn->suffix->refCount++;
savec = gn->path[savep];
gn->path[savep] = '\0';
if ((ptr = strrchr(gn->path, '/')) != NULL)
ptr++;
else
ptr = gn->path;
Var_Set(PREFIX, ptr, gn, 0);
gn->path[savep] = savec;
} else {
/*
* The .PREFIX gets the full path if the target has
* no known suffix.
*/
if (gn->suffix)
gn->suffix->refCount--;
gn->suffix = NULL;
if ((ptr = strrchr(gn->path, '/')) != NULL)
ptr++;
else
ptr = gn->path;
Var_Set(PREFIX, ptr, gn, 0);
}
}
}
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, slst);
if (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) {
if (Lst_Member(slst, (ClientData) bottom) == NILLNODE) {
Lst_AtEnd(slst, (ClientData) bottom);
}
bottom = bottom->parent;
}
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 != NULL; src = src->parent) {
targ = src->parent;
if (src->node->suffix)
src->node->suffix->refCount--;
src->node->suffix = src->suff;
src->node->suffix->refCount++;
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, 0);
Var_Set(TARGET, targ->node->name, targ->node, 0);
}
}
if (gn->suffix)
gn->suffix->refCount--;
gn->suffix = src->suff;
gn->suffix->refCount++;
/*
* Nuke the transformation path and the Src structures left over in the
* two lists.
*/
sfnd_return:
if (bottom)
if (Lst_Member(slst, (ClientData) bottom) == NILLNODE)
Lst_AtEnd(slst, (ClientData) bottom);
while (SuffRemoveSrc(srcs) || SuffRemoveSrc(targs))
continue;
Lst_Concat(slst, srcs, LST_CONCLINK);
Lst_Concat(slst, targs, LST_CONCLINK);
}
/*-
*-----------------------------------------------------------------------
* 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(GNode *gn)
{
SuffFindDeps(gn, srclist);
while (SuffRemoveSrc(srclist))
continue;
}
/*
* Input:
* gn node we're dealing with
*
*/
static void
SuffFindDeps(GNode *gn, Lst slst)
{
if (gn->type & (OP_DEPS_FOUND|OP_PHONY)) {
/*
* If dependencies already found, no need to do it again...
* If this is a .PHONY target, we do not apply suffix rules.
*/
return;
} else {
gn->type |= OP_DEPS_FOUND;
}
if (DEBUG(SUFF)) {
printf("SuffFindDeps (%s)\n", gn->name);
}
if (gn->type & OP_ARCHV) {
SuffFindArchiveDeps(gn, slst);
} 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)UNCONST(LIBSUFF),
SuffSuffHasNameP);
if (gn->suffix)
gn->suffix->refCount--;
if (ln != NILLNODE) {
gn->suffix = s = (Suff *)Lst_Datum(ln);
gn->suffix->refCount++;
Arch_FindLib(gn, s->searchPath);
} else {
gn->suffix = NULL;
Var_Set(TARGET, gn->name, gn, 0);
}
/*
* 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, 0);
} else {
SuffFindNormalDeps(gn, slst);
}
}
/*-
*-----------------------------------------------------------------------
* Suff_SetNull --
* Define which suffix is the null suffix.
*
* Input:
* name Name of 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(char *name)
{
Suff *s;
LstNode ln;
ln = Lst_Find(sufflist, (ClientData)name, SuffSuffHasNameP);
if (ln != NILLNODE) {
s = (Suff *)Lst_Datum(ln);
if (suffNull != 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(void)
{
sufflist = Lst_Init(FALSE);
#ifdef CLEANUP
suffClean = Lst_Init(FALSE);
#endif
srclist = 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 = emalloc(sizeof(Suff));
suffNull->name = estrdup("");
suffNull->nameLen = 0;
suffNull->searchPath = Lst_Init(FALSE);
Dir_Concat(suffNull->searchPath, dirSearchPath);
suffNull->children = Lst_Init(FALSE);
suffNull->parents = Lst_Init(FALSE);
suffNull->ref = Lst_Init(FALSE);
suffNull->sNum = sNum++;
suffNull->flags = SUFF_NULL;
suffNull->refCount = 1;
}
/*-
*----------------------------------------------------------------------
* Suff_End --
* Cleanup the this module
*
* Results:
* None
*
* Side Effects:
* The memory is free'd.
*----------------------------------------------------------------------
*/
void
Suff_End(void)
{
#ifdef CLEANUP
Lst_Destroy(sufflist, SuffFree);
Lst_Destroy(suffClean, SuffFree);
if (suffNull)
SuffFree(suffNull);
Lst_Destroy(srclist, NOFREE);
Lst_Destroy(transforms, NOFREE);
#endif
}
/********************* DEBUGGING FUNCTIONS **********************/
static int SuffPrintName(ClientData s, ClientData dummy)
{
printf("%s ", ((Suff *)s)->name);
return (dummy ? 0 : 0);
}
static int
SuffPrintSuff(ClientData sp, ClientData dummy)
{
Suff *s = (Suff *)sp;
int flags;
int flag;
printf("# `%s' [%d] ", s->name, s->refCount);
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;
}
fputc(flags ? '|' : ')', stdout);
}
}
fputc('\n', stdout);
printf("#\tTo: ");
Lst_ForEach(s->parents, SuffPrintName, (ClientData)0);
fputc('\n', stdout);
printf("#\tFrom: ");
Lst_ForEach(s->children, SuffPrintName, (ClientData)0);
fputc('\n', stdout);
printf("#\tSearch Path: ");
Dir_PrintPath(s->searchPath);
fputc('\n', stdout);
return (dummy ? 0 : 0);
}
static int
SuffPrintTrans(ClientData tp, ClientData dummy)
{
GNode *t = (GNode *)tp;
printf("%-16s: ", t->name);
Targ_PrintType(t->type);
fputc('\n', stdout);
Lst_ForEach(t->commands, Targ_PrintCmd, (ClientData)0);
fputc('\n', stdout);
return(dummy ? 0 : 0);
}
void
Suff_PrintAll(void)
{
printf("#*** Suffixes:\n");
Lst_ForEach(sufflist, SuffPrintSuff, (ClientData)0);
printf("#*** Transformations:\n");
Lst_ForEach(transforms, SuffPrintTrans, (ClientData)0);
}
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