1555 lines
45 KiB
C
1555 lines
45 KiB
C
/* $NetBSD: make.c,v 1.79 2010/04/07 00:11:27 sjg 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: make.c,v 1.79 2010/04/07 00:11:27 sjg Exp $";
|
||
#else
|
||
#include <sys/cdefs.h>
|
||
#ifndef lint
|
||
#if 0
|
||
static char sccsid[] = "@(#)make.c 8.1 (Berkeley) 6/6/93";
|
||
#else
|
||
__RCSID("$NetBSD: make.c,v 1.79 2010/04/07 00:11:27 sjg Exp $");
|
||
#endif
|
||
#endif /* not lint */
|
||
#endif
|
||
|
||
/*-
|
||
* make.c --
|
||
* The functions which perform the examination of targets and
|
||
* their suitability for creation
|
||
*
|
||
* Interface:
|
||
* Make_Run Initialize things for the module and recreate
|
||
* whatever needs recreating. Returns TRUE if
|
||
* work was (or would have been) done and FALSE
|
||
* otherwise.
|
||
*
|
||
* Make_Update Update all parents of a given child. Performs
|
||
* various bookkeeping chores like the updating
|
||
* of the cmtime field of the parent, filling
|
||
* of the IMPSRC context variable, etc. It will
|
||
* place the parent on the toBeMade queue if it
|
||
* should be.
|
||
*
|
||
* Make_TimeStamp Function to set the parent's cmtime field
|
||
* based on a child's modification time.
|
||
*
|
||
* Make_DoAllVar Set up the various local variables for a
|
||
* target, including the .ALLSRC variable, making
|
||
* sure that any variable that needs to exist
|
||
* at the very least has the empty value.
|
||
*
|
||
* Make_OODate Determine if a target is out-of-date.
|
||
*
|
||
* Make_HandleUse See if a child is a .USE node for a parent
|
||
* and perform the .USE actions if so.
|
||
*
|
||
* Make_ExpandUse Expand .USE nodes
|
||
*/
|
||
|
||
#include "make.h"
|
||
#include "hash.h"
|
||
#include "dir.h"
|
||
#include "job.h"
|
||
|
||
static unsigned int checked = 1;/* Sequence # to detect recursion */
|
||
static Lst toBeMade; /* The current fringe of the graph. These
|
||
* are nodes which await examination by
|
||
* MakeOODate. It is added to by
|
||
* Make_Update and subtracted from by
|
||
* MakeStartJobs */
|
||
|
||
static int MakeAddChild(void *, void *);
|
||
static int MakeFindChild(void *, void *);
|
||
static int MakeUnmark(void *, void *);
|
||
static int MakeAddAllSrc(void *, void *);
|
||
static int MakeTimeStamp(void *, void *);
|
||
static int MakeHandleUse(void *, void *);
|
||
static Boolean MakeStartJobs(void);
|
||
static int MakePrintStatus(void *, void *);
|
||
static int MakeCheckOrder(void *, void *);
|
||
static int MakeBuildChild(void *, void *);
|
||
static int MakeBuildParent(void *, void *);
|
||
|
||
static void
|
||
make_abort(GNode *gn, int line)
|
||
{
|
||
static int two = 2;
|
||
|
||
fprintf(debug_file, "make_abort from line %d\n", line);
|
||
Targ_PrintNode(gn, &two);
|
||
Lst_ForEach(toBeMade, Targ_PrintNode, &two);
|
||
Targ_PrintGraph(3);
|
||
abort();
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Make_TimeStamp --
|
||
* Set the cmtime field of a parent node based on the mtime stamp in its
|
||
* child. Called from MakeOODate via Lst_ForEach.
|
||
*
|
||
* Input:
|
||
* pgn the current parent
|
||
* cgn the child we've just examined
|
||
*
|
||
* Results:
|
||
* Always returns 0.
|
||
*
|
||
* Side Effects:
|
||
* The cmtime of the parent node will be changed if the mtime
|
||
* field of the child is greater than it.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
int
|
||
Make_TimeStamp(GNode *pgn, GNode *cgn)
|
||
{
|
||
if (cgn->mtime > pgn->cmtime) {
|
||
pgn->cmtime = cgn->mtime;
|
||
}
|
||
return (0);
|
||
}
|
||
|
||
/*
|
||
* Input:
|
||
* pgn the current parent
|
||
* cgn the child we've just examined
|
||
*
|
||
*/
|
||
static int
|
||
MakeTimeStamp(void *pgn, void *cgn)
|
||
{
|
||
return Make_TimeStamp((GNode *)pgn, (GNode *)cgn);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Make_OODate --
|
||
* See if a given node is out of date with respect to its sources.
|
||
* Used by Make_Run when deciding which nodes to place on the
|
||
* toBeMade queue initially and by Make_Update to screen out USE and
|
||
* EXEC nodes. In the latter case, however, any other sort of node
|
||
* must be considered out-of-date since at least one of its children
|
||
* will have been recreated.
|
||
*
|
||
* Input:
|
||
* gn the node to check
|
||
*
|
||
* Results:
|
||
* TRUE if the node is out of date. FALSE otherwise.
|
||
*
|
||
* Side Effects:
|
||
* The mtime field of the node and the cmtime field of its parents
|
||
* will/may be changed.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
Boolean
|
||
Make_OODate(GNode *gn)
|
||
{
|
||
Boolean oodate;
|
||
|
||
/*
|
||
* Certain types of targets needn't even be sought as their datedness
|
||
* doesn't depend on their modification time...
|
||
*/
|
||
if ((gn->type & (OP_JOIN|OP_USE|OP_USEBEFORE|OP_EXEC)) == 0) {
|
||
(void)Dir_MTime(gn);
|
||
if (DEBUG(MAKE)) {
|
||
if (gn->mtime != 0) {
|
||
fprintf(debug_file, "modified %s...", Targ_FmtTime(gn->mtime));
|
||
} else {
|
||
fprintf(debug_file, "non-existent...");
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* A target is remade in one of the following circumstances:
|
||
* its modification time is smaller than that of its youngest child
|
||
* and it would actually be run (has commands or type OP_NOP)
|
||
* it's the object of a force operator
|
||
* it has no children, was on the lhs of an operator and doesn't exist
|
||
* already.
|
||
*
|
||
* Libraries are only considered out-of-date if the archive module says
|
||
* they are.
|
||
*
|
||
* These weird rules are brought to you by Backward-Compatibility and
|
||
* the strange people who wrote 'Make'.
|
||
*/
|
||
if (gn->type & (OP_USE|OP_USEBEFORE)) {
|
||
/*
|
||
* If the node is a USE node it is *never* out of date
|
||
* no matter *what*.
|
||
*/
|
||
if (DEBUG(MAKE)) {
|
||
fprintf(debug_file, ".USE node...");
|
||
}
|
||
oodate = FALSE;
|
||
} else if ((gn->type & OP_LIB) &&
|
||
((gn->mtime==0) || Arch_IsLib(gn))) {
|
||
if (DEBUG(MAKE)) {
|
||
fprintf(debug_file, "library...");
|
||
}
|
||
|
||
/*
|
||
* always out of date if no children and :: target
|
||
* or non-existent.
|
||
*/
|
||
oodate = (gn->mtime == 0 || Arch_LibOODate(gn) ||
|
||
(gn->cmtime == 0 && (gn->type & OP_DOUBLEDEP)));
|
||
} else if (gn->type & OP_JOIN) {
|
||
/*
|
||
* A target with the .JOIN attribute is only considered
|
||
* out-of-date if any of its children was out-of-date.
|
||
*/
|
||
if (DEBUG(MAKE)) {
|
||
fprintf(debug_file, ".JOIN node...");
|
||
}
|
||
if (DEBUG(MAKE)) {
|
||
fprintf(debug_file, "source %smade...", gn->flags & CHILDMADE ? "" : "not ");
|
||
}
|
||
oodate = (gn->flags & CHILDMADE) ? TRUE : FALSE;
|
||
} else if (gn->type & (OP_FORCE|OP_EXEC|OP_PHONY)) {
|
||
/*
|
||
* A node which is the object of the force (!) operator or which has
|
||
* the .EXEC attribute is always considered out-of-date.
|
||
*/
|
||
if (DEBUG(MAKE)) {
|
||
if (gn->type & OP_FORCE) {
|
||
fprintf(debug_file, "! operator...");
|
||
} else if (gn->type & OP_PHONY) {
|
||
fprintf(debug_file, ".PHONY node...");
|
||
} else {
|
||
fprintf(debug_file, ".EXEC node...");
|
||
}
|
||
}
|
||
oodate = TRUE;
|
||
} else if (gn->mtime < gn->cmtime ||
|
||
(gn->cmtime == 0 &&
|
||
((gn->mtime == 0 && !(gn->type & OP_OPTIONAL))
|
||
|| gn->type & OP_DOUBLEDEP)))
|
||
{
|
||
/*
|
||
* A node whose modification time is less than that of its
|
||
* youngest child or that has no children (cmtime == 0) and
|
||
* either doesn't exist (mtime == 0) and it isn't optional
|
||
* or was the object of a * :: operator is out-of-date.
|
||
* Why? Because that's the way Make does it.
|
||
*/
|
||
if (DEBUG(MAKE)) {
|
||
if (gn->mtime < gn->cmtime) {
|
||
fprintf(debug_file, "modified before source...");
|
||
} else if (gn->mtime == 0) {
|
||
fprintf(debug_file, "non-existent and no sources...");
|
||
} else {
|
||
fprintf(debug_file, ":: operator and no sources...");
|
||
}
|
||
}
|
||
oodate = TRUE;
|
||
} else {
|
||
/*
|
||
* When a non-existing child with no sources
|
||
* (such as a typically used FORCE source) has been made and
|
||
* the target of the child (usually a directory) has the same
|
||
* timestamp as the timestamp just given to the non-existing child
|
||
* after it was considered made.
|
||
*/
|
||
if (DEBUG(MAKE)) {
|
||
if (gn->flags & FORCE)
|
||
fprintf(debug_file, "non existing child...");
|
||
}
|
||
oodate = (gn->flags & FORCE) ? TRUE : FALSE;
|
||
}
|
||
|
||
/*
|
||
* If the target isn't out-of-date, the parents need to know its
|
||
* modification time. Note that targets that appear to be out-of-date
|
||
* but aren't, because they have no commands and aren't of type OP_NOP,
|
||
* have their mtime stay below their children's mtime to keep parents from
|
||
* thinking they're out-of-date.
|
||
*/
|
||
if (!oodate) {
|
||
Lst_ForEach(gn->parents, MakeTimeStamp, gn);
|
||
}
|
||
|
||
return (oodate);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* MakeAddChild --
|
||
* Function used by Make_Run to add a child to the list l.
|
||
* It will only add the child if its make field is FALSE.
|
||
*
|
||
* Input:
|
||
* gnp the node to add
|
||
* lp the list to which to add it
|
||
*
|
||
* Results:
|
||
* Always returns 0
|
||
*
|
||
* Side Effects:
|
||
* The given list is extended
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
MakeAddChild(void *gnp, void *lp)
|
||
{
|
||
GNode *gn = (GNode *)gnp;
|
||
Lst l = (Lst) lp;
|
||
|
||
if ((gn->flags & REMAKE) == 0 && !(gn->type & (OP_USE|OP_USEBEFORE))) {
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, "MakeAddChild: need to examine %s%s\n",
|
||
gn->name, gn->cohort_num);
|
||
(void)Lst_EnQueue(l, gn);
|
||
}
|
||
return (0);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* MakeFindChild --
|
||
* Function used by Make_Run to find the pathname of a child
|
||
* that was already made.
|
||
*
|
||
* Input:
|
||
* gnp the node to find
|
||
*
|
||
* Results:
|
||
* Always returns 0
|
||
*
|
||
* Side Effects:
|
||
* The path and mtime of the node and the cmtime of the parent are
|
||
* updated; the unmade children count of the parent is decremented.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
MakeFindChild(void *gnp, void *pgnp)
|
||
{
|
||
GNode *gn = (GNode *)gnp;
|
||
GNode *pgn = (GNode *)pgnp;
|
||
|
||
(void)Dir_MTime(gn);
|
||
Make_TimeStamp(pgn, gn);
|
||
pgn->unmade--;
|
||
|
||
return (0);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Make_HandleUse --
|
||
* Function called by Make_Run and SuffApplyTransform on the downward
|
||
* pass to handle .USE and transformation nodes. It implements the
|
||
* .USE and transformation functionality by copying the node's commands,
|
||
* type flags and children to the parent node.
|
||
*
|
||
* A .USE node is much like an explicit transformation rule, except
|
||
* its commands are always added to the target node, even if the
|
||
* target already has commands.
|
||
*
|
||
* Input:
|
||
* cgn The .USE node
|
||
* pgn The target of the .USE node
|
||
*
|
||
* Results:
|
||
* none
|
||
*
|
||
* Side Effects:
|
||
* Children and commands may be added to the parent and the parent's
|
||
* type may be changed.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Make_HandleUse(GNode *cgn, GNode *pgn)
|
||
{
|
||
LstNode ln; /* An element in the children list */
|
||
|
||
#ifdef DEBUG_SRC
|
||
if ((cgn->type & (OP_USE|OP_USEBEFORE|OP_TRANSFORM)) == 0) {
|
||
fprintf(debug_file, "Make_HandleUse: called for plain node %s\n", cgn->name);
|
||
return;
|
||
}
|
||
#endif
|
||
|
||
if ((cgn->type & (OP_USE|OP_USEBEFORE)) || Lst_IsEmpty(pgn->commands)) {
|
||
if (cgn->type & OP_USEBEFORE) {
|
||
/*
|
||
* .USEBEFORE --
|
||
* prepend the child's commands to the parent.
|
||
*/
|
||
Lst cmds = pgn->commands;
|
||
pgn->commands = Lst_Duplicate(cgn->commands, NULL);
|
||
(void)Lst_Concat(pgn->commands, cmds, LST_CONCNEW);
|
||
Lst_Destroy(cmds, NULL);
|
||
} else {
|
||
/*
|
||
* .USE or target has no commands --
|
||
* append the child's commands to the parent.
|
||
*/
|
||
(void)Lst_Concat(pgn->commands, cgn->commands, LST_CONCNEW);
|
||
}
|
||
}
|
||
|
||
if (Lst_Open(cgn->children) == SUCCESS) {
|
||
while ((ln = Lst_Next(cgn->children)) != NULL) {
|
||
GNode *tgn, *gn = (GNode *)Lst_Datum(ln);
|
||
|
||
/*
|
||
* Expand variables in the .USE node's name
|
||
* and save the unexpanded form.
|
||
* We don't need to do this for commands.
|
||
* They get expanded properly when we execute.
|
||
*/
|
||
if (gn->uname == NULL) {
|
||
gn->uname = gn->name;
|
||
} else {
|
||
if (gn->name)
|
||
free(gn->name);
|
||
}
|
||
gn->name = Var_Subst(NULL, gn->uname, pgn, FALSE);
|
||
if (gn->name && gn->uname && strcmp(gn->name, gn->uname) != 0) {
|
||
/* See if we have a target for this node. */
|
||
tgn = Targ_FindNode(gn->name, TARG_NOCREATE);
|
||
if (tgn != NULL)
|
||
gn = tgn;
|
||
}
|
||
|
||
(void)Lst_AtEnd(pgn->children, gn);
|
||
(void)Lst_AtEnd(gn->parents, pgn);
|
||
pgn->unmade += 1;
|
||
}
|
||
Lst_Close(cgn->children);
|
||
}
|
||
|
||
pgn->type |= cgn->type & ~(OP_OPMASK|OP_USE|OP_USEBEFORE|OP_TRANSFORM);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* MakeHandleUse --
|
||
* Callback function for Lst_ForEach, used by Make_Run on the downward
|
||
* pass to handle .USE nodes. Should be called before the children
|
||
* are enqueued to be looked at by MakeAddChild.
|
||
* This function calls Make_HandleUse to copy the .USE node's commands,
|
||
* type flags and children to the parent node.
|
||
*
|
||
* Input:
|
||
* cgnp the child we've just examined
|
||
* pgnp the current parent
|
||
*
|
||
* Results:
|
||
* returns 0.
|
||
*
|
||
* Side Effects:
|
||
* After expansion, .USE child nodes are removed from the parent
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
MakeHandleUse(void *cgnp, void *pgnp)
|
||
{
|
||
GNode *cgn = (GNode *)cgnp;
|
||
GNode *pgn = (GNode *)pgnp;
|
||
LstNode ln; /* An element in the children list */
|
||
int unmarked;
|
||
|
||
unmarked = ((cgn->type & OP_MARK) == 0);
|
||
cgn->type |= OP_MARK;
|
||
|
||
if ((cgn->type & (OP_USE|OP_USEBEFORE)) == 0)
|
||
return (0);
|
||
|
||
if (unmarked)
|
||
Make_HandleUse(cgn, pgn);
|
||
|
||
/*
|
||
* This child node is now "made", so we decrement the count of
|
||
* unmade children in the parent... We also remove the child
|
||
* from the parent's list to accurately reflect the number of decent
|
||
* children the parent has. This is used by Make_Run to decide
|
||
* whether to queue the parent or examine its children...
|
||
*/
|
||
if ((ln = Lst_Member(pgn->children, cgn)) != NULL) {
|
||
Lst_Remove(pgn->children, ln);
|
||
pgn->unmade--;
|
||
}
|
||
return (0);
|
||
}
|
||
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Make_Recheck --
|
||
* Check the modification time of a gnode, and update it as described
|
||
* in the comments below.
|
||
*
|
||
* Results:
|
||
* returns 0 if the gnode does not exist, or it's filesystem
|
||
* time if it does.
|
||
*
|
||
* Side Effects:
|
||
* the gnode's modification time and path name are affected.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
time_t
|
||
Make_Recheck(GNode *gn)
|
||
{
|
||
time_t mtime = Dir_MTime(gn);
|
||
|
||
#ifndef RECHECK
|
||
/*
|
||
* We can't re-stat the thing, but we can at least take care of rules
|
||
* where a target depends on a source that actually creates the
|
||
* target, but only if it has changed, e.g.
|
||
*
|
||
* parse.h : parse.o
|
||
*
|
||
* parse.o : parse.y
|
||
* yacc -d parse.y
|
||
* cc -c y.tab.c
|
||
* mv y.tab.o parse.o
|
||
* cmp -s y.tab.h parse.h || mv y.tab.h parse.h
|
||
*
|
||
* In this case, if the definitions produced by yacc haven't changed
|
||
* from before, parse.h won't have been updated and gn->mtime will
|
||
* reflect the current modification time for parse.h. This is
|
||
* something of a kludge, I admit, but it's a useful one..
|
||
* XXX: People like to use a rule like
|
||
*
|
||
* FRC:
|
||
*
|
||
* To force things that depend on FRC to be made, so we have to
|
||
* check for gn->children being empty as well...
|
||
*/
|
||
if (!Lst_IsEmpty(gn->commands) || Lst_IsEmpty(gn->children)) {
|
||
gn->mtime = now;
|
||
}
|
||
#else
|
||
/*
|
||
* This is what Make does and it's actually a good thing, as it
|
||
* allows rules like
|
||
*
|
||
* cmp -s y.tab.h parse.h || cp y.tab.h parse.h
|
||
*
|
||
* to function as intended. Unfortunately, thanks to the stateless
|
||
* nature of NFS (by which I mean the loose coupling of two clients
|
||
* using the same file from a common server), there are times
|
||
* when the modification time of a file created on a remote
|
||
* machine will not be modified before the local stat() implied by
|
||
* the Dir_MTime occurs, thus leading us to believe that the file
|
||
* is unchanged, wreaking havoc with files that depend on this one.
|
||
*
|
||
* I have decided it is better to make too much than to make too
|
||
* little, so this stuff is commented out unless you're sure it's ok.
|
||
* -- ardeb 1/12/88
|
||
*/
|
||
/*
|
||
* Christos, 4/9/92: If we are saving commands pretend that
|
||
* the target is made now. Otherwise archives with ... rules
|
||
* don't work!
|
||
*/
|
||
if (NoExecute(gn) || (gn->type & OP_SAVE_CMDS) ||
|
||
(mtime == 0 && !(gn->type & OP_WAIT))) {
|
||
if (DEBUG(MAKE)) {
|
||
fprintf(debug_file, " recheck(%s): update time from %s to now\n",
|
||
gn->name, Targ_FmtTime(gn->mtime));
|
||
}
|
||
gn->mtime = now;
|
||
}
|
||
else {
|
||
if (DEBUG(MAKE)) {
|
||
fprintf(debug_file, " recheck(%s): current update time: %s\n",
|
||
gn->name, Targ_FmtTime(gn->mtime));
|
||
}
|
||
}
|
||
#endif
|
||
return mtime;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Make_Update --
|
||
* Perform update on the parents of a node. Used by JobFinish once
|
||
* a node has been dealt with and by MakeStartJobs if it finds an
|
||
* up-to-date node.
|
||
*
|
||
* Input:
|
||
* cgn the child node
|
||
*
|
||
* Results:
|
||
* Always returns 0
|
||
*
|
||
* Side Effects:
|
||
* The unmade field of pgn is decremented and pgn may be placed on
|
||
* the toBeMade queue if this field becomes 0.
|
||
*
|
||
* If the child was made, the parent's flag CHILDMADE field will be
|
||
* set true and its cmtime set to now.
|
||
*
|
||
* If the child is not up-to-date and still does not exist,
|
||
* set the FORCE flag on the parents.
|
||
*
|
||
* If the child wasn't made, the cmtime field of the parent will be
|
||
* altered if the child's mtime is big enough.
|
||
*
|
||
* Finally, if the child is the implied source for the parent, the
|
||
* parent's IMPSRC variable is set appropriately.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Make_Update(GNode *cgn)
|
||
{
|
||
GNode *pgn; /* the parent node */
|
||
char *cname; /* the child's name */
|
||
LstNode ln; /* Element in parents and iParents lists */
|
||
time_t mtime = -1;
|
||
char *p1;
|
||
Lst parents;
|
||
GNode *centurion;
|
||
|
||
/* It is save to re-examine any nodes again */
|
||
checked++;
|
||
|
||
cname = Var_Value(TARGET, cgn, &p1);
|
||
if (p1)
|
||
free(p1);
|
||
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, "Make_Update: %s%s\n", cgn->name, cgn->cohort_num);
|
||
|
||
/*
|
||
* If the child was actually made, see what its modification time is
|
||
* now -- some rules won't actually update the file. If the file still
|
||
* doesn't exist, make its mtime now.
|
||
*/
|
||
if (cgn->made != UPTODATE) {
|
||
mtime = Make_Recheck(cgn);
|
||
}
|
||
|
||
/*
|
||
* If this is a `::' node, we must consult its first instance
|
||
* which is where all parents are linked.
|
||
*/
|
||
if ((centurion = cgn->centurion) != NULL) {
|
||
if (!Lst_IsEmpty(cgn->parents))
|
||
Punt("%s%s: cohort has parents", cgn->name, cgn->cohort_num);
|
||
centurion->unmade_cohorts -= 1;
|
||
if (centurion->unmade_cohorts < 0)
|
||
Error("Graph cycles through centurion %s", centurion->name);
|
||
} else {
|
||
centurion = cgn;
|
||
}
|
||
parents = centurion->parents;
|
||
|
||
/* If this was a .ORDER node, schedule the RHS */
|
||
Lst_ForEach(centurion->order_succ, MakeBuildParent, Lst_First(toBeMade));
|
||
|
||
/* Now mark all the parents as having one less unmade child */
|
||
if (Lst_Open(parents) == SUCCESS) {
|
||
while ((ln = Lst_Next(parents)) != NULL) {
|
||
pgn = (GNode *)Lst_Datum(ln);
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, "inspect parent %s%s: flags %x, "
|
||
"type %x, made %d, unmade %d ",
|
||
pgn->name, pgn->cohort_num, pgn->flags,
|
||
pgn->type, pgn->made, pgn->unmade-1);
|
||
|
||
if (!(pgn->flags & REMAKE)) {
|
||
/* This parent isn't needed */
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, "- not needed\n");
|
||
continue;
|
||
}
|
||
if (mtime == 0 && !(cgn->type & OP_WAIT))
|
||
pgn->flags |= FORCE;
|
||
|
||
/*
|
||
* If the parent has the .MADE attribute, its timestamp got
|
||
* updated to that of its newest child, and its unmake
|
||
* child count got set to zero in Make_ExpandUse().
|
||
* However other things might cause us to build one of its
|
||
* children - and so we mustn't do any processing here when
|
||
* the child build finishes.
|
||
*/
|
||
if (pgn->type & OP_MADE) {
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, "- .MADE\n");
|
||
continue;
|
||
}
|
||
|
||
if ( ! (cgn->type & (OP_EXEC|OP_USE|OP_USEBEFORE))) {
|
||
if (cgn->made == MADE)
|
||
pgn->flags |= CHILDMADE;
|
||
(void)Make_TimeStamp(pgn, cgn);
|
||
}
|
||
|
||
/*
|
||
* A parent must wait for the completion of all instances
|
||
* of a `::' dependency.
|
||
*/
|
||
if (centurion->unmade_cohorts != 0 || centurion->made < MADE) {
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file,
|
||
"- centurion made %d, %d unmade cohorts\n",
|
||
centurion->made, centurion->unmade_cohorts);
|
||
continue;
|
||
}
|
||
|
||
/* One more child of this parent is now made */
|
||
pgn->unmade -= 1;
|
||
if (pgn->unmade < 0) {
|
||
if (DEBUG(MAKE)) {
|
||
fprintf(debug_file, "Graph cycles through %s%s\n",
|
||
pgn->name, pgn->cohort_num);
|
||
Targ_PrintGraph(2);
|
||
}
|
||
Error("Graph cycles through %s%s", pgn->name, pgn->cohort_num);
|
||
}
|
||
|
||
/* We must always rescan the parents of .WAIT and .ORDER nodes. */
|
||
if (pgn->unmade != 0 && !(centurion->type & OP_WAIT)
|
||
&& !(centurion->flags & DONE_ORDER)) {
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, "- unmade children\n");
|
||
continue;
|
||
}
|
||
if (pgn->made != DEFERRED) {
|
||
/*
|
||
* Either this parent is on a different branch of the tree,
|
||
* or it on the RHS of a .WAIT directive
|
||
* or it is already on the toBeMade list.
|
||
*/
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, "- not deferred\n");
|
||
continue;
|
||
}
|
||
if (pgn->order_pred
|
||
&& Lst_ForEach(pgn->order_pred, MakeCheckOrder, 0)) {
|
||
/* A .ORDER rule stops us building this */
|
||
continue;
|
||
}
|
||
if (DEBUG(MAKE)) {
|
||
static int two = 2;
|
||
fprintf(debug_file, "- %s%s made, schedule %s%s (made %d)\n",
|
||
cgn->name, cgn->cohort_num,
|
||
pgn->name, pgn->cohort_num, pgn->made);
|
||
Targ_PrintNode(pgn, &two);
|
||
}
|
||
/* Ok, we can schedule the parent again */
|
||
pgn->made = REQUESTED;
|
||
(void)Lst_EnQueue(toBeMade, pgn);
|
||
}
|
||
Lst_Close(parents);
|
||
}
|
||
|
||
/*
|
||
* Set the .PREFIX and .IMPSRC variables for all the implied parents
|
||
* of this node.
|
||
*/
|
||
if (Lst_Open(cgn->iParents) == SUCCESS) {
|
||
char *cpref = Var_Value(PREFIX, cgn, &p1);
|
||
|
||
while ((ln = Lst_Next(cgn->iParents)) != NULL) {
|
||
pgn = (GNode *)Lst_Datum(ln);
|
||
if (pgn->flags & REMAKE) {
|
||
Var_Set(IMPSRC, cname, pgn, 0);
|
||
if (cpref != NULL)
|
||
Var_Set(PREFIX, cpref, pgn, 0);
|
||
}
|
||
}
|
||
if (p1)
|
||
free(p1);
|
||
Lst_Close(cgn->iParents);
|
||
}
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* MakeAddAllSrc --
|
||
* Add a child's name to the ALLSRC and OODATE variables of the given
|
||
* node. Called from Make_DoAllVar via Lst_ForEach. A child is added only
|
||
* if it has not been given the .EXEC, .USE or .INVISIBLE attributes.
|
||
* .EXEC and .USE children are very rarely going to be files, so...
|
||
* If the child is a .JOIN node, its ALLSRC is propagated to the parent.
|
||
*
|
||
* A child is added to the OODATE variable if its modification time is
|
||
* later than that of its parent, as defined by Make, except if the
|
||
* parent is a .JOIN node. In that case, it is only added to the OODATE
|
||
* variable if it was actually made (since .JOIN nodes don't have
|
||
* modification times, the comparison is rather unfair...)..
|
||
*
|
||
* Results:
|
||
* Always returns 0
|
||
*
|
||
* Side Effects:
|
||
* The ALLSRC variable for the given node is extended.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
MakeUnmark(void *cgnp, void *pgnp __unused)
|
||
{
|
||
GNode *cgn = (GNode *)cgnp;
|
||
|
||
cgn->type &= ~OP_MARK;
|
||
return (0);
|
||
}
|
||
|
||
/*
|
||
* Input:
|
||
* cgnp The child to add
|
||
* pgnp The parent to whose ALLSRC variable it should
|
||
* be added
|
||
*
|
||
*/
|
||
static int
|
||
MakeAddAllSrc(void *cgnp, void *pgnp)
|
||
{
|
||
GNode *cgn = (GNode *)cgnp;
|
||
GNode *pgn = (GNode *)pgnp;
|
||
|
||
if (cgn->type & OP_MARK)
|
||
return (0);
|
||
cgn->type |= OP_MARK;
|
||
|
||
if ((cgn->type & (OP_EXEC|OP_USE|OP_USEBEFORE|OP_INVISIBLE)) == 0) {
|
||
char *child, *allsrc;
|
||
char *p1 = NULL, *p2 = NULL;
|
||
|
||
if (cgn->type & OP_ARCHV)
|
||
child = Var_Value(MEMBER, cgn, &p1);
|
||
else
|
||
child = cgn->path ? cgn->path : cgn->name;
|
||
if (cgn->type & OP_JOIN) {
|
||
allsrc = Var_Value(ALLSRC, cgn, &p2);
|
||
} else {
|
||
allsrc = child;
|
||
}
|
||
if (allsrc != NULL)
|
||
Var_Append(ALLSRC, allsrc, pgn);
|
||
if (p2)
|
||
free(p2);
|
||
if (pgn->type & OP_JOIN) {
|
||
if (cgn->made == MADE) {
|
||
Var_Append(OODATE, child, pgn);
|
||
}
|
||
} else if ((pgn->mtime < cgn->mtime) ||
|
||
(cgn->mtime >= now && cgn->made == MADE))
|
||
{
|
||
/*
|
||
* It goes in the OODATE variable if the parent is younger than the
|
||
* child or if the child has been modified more recently than
|
||
* the start of the make. This is to keep pmake from getting
|
||
* confused if something else updates the parent after the
|
||
* make starts (shouldn't happen, I know, but sometimes it
|
||
* does). In such a case, if we've updated the kid, the parent
|
||
* is likely to have a modification time later than that of
|
||
* the kid and anything that relies on the OODATE variable will
|
||
* be hosed.
|
||
*
|
||
* XXX: This will cause all made children to go in the OODATE
|
||
* variable, even if they're not touched, if RECHECK isn't defined,
|
||
* since cgn->mtime is set to now in Make_Update. According to
|
||
* some people, this is good...
|
||
*/
|
||
Var_Append(OODATE, child, pgn);
|
||
}
|
||
if (p1)
|
||
free(p1);
|
||
}
|
||
return (0);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Make_DoAllVar --
|
||
* Set up the ALLSRC and OODATE variables. Sad to say, it must be
|
||
* done separately, rather than while traversing the graph. This is
|
||
* because Make defined OODATE to contain all sources whose modification
|
||
* times were later than that of the target, *not* those sources that
|
||
* were out-of-date. Since in both compatibility and native modes,
|
||
* the modification time of the parent isn't found until the child
|
||
* has been dealt with, we have to wait until now to fill in the
|
||
* variable. As for ALLSRC, the ordering is important and not
|
||
* guaranteed when in native mode, so it must be set here, too.
|
||
*
|
||
* Results:
|
||
* None
|
||
*
|
||
* Side Effects:
|
||
* The ALLSRC and OODATE variables of the given node is filled in.
|
||
* If the node is a .JOIN node, its TARGET variable will be set to
|
||
* match its ALLSRC variable.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Make_DoAllVar(GNode *gn)
|
||
{
|
||
if (gn->flags & DONE_ALLSRC)
|
||
return;
|
||
|
||
Lst_ForEach(gn->children, MakeUnmark, gn);
|
||
Lst_ForEach(gn->children, MakeAddAllSrc, gn);
|
||
|
||
if (!Var_Exists (OODATE, gn)) {
|
||
Var_Set(OODATE, "", gn, 0);
|
||
}
|
||
if (!Var_Exists (ALLSRC, gn)) {
|
||
Var_Set(ALLSRC, "", gn, 0);
|
||
}
|
||
|
||
if (gn->type & OP_JOIN) {
|
||
char *p1;
|
||
Var_Set(TARGET, Var_Value(ALLSRC, gn, &p1), gn, 0);
|
||
if (p1)
|
||
free(p1);
|
||
}
|
||
gn->flags |= DONE_ALLSRC;
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* MakeStartJobs --
|
||
* Start as many jobs as possible.
|
||
*
|
||
* Results:
|
||
* If the query flag was given to pmake, no job will be started,
|
||
* but as soon as an out-of-date target is found, this function
|
||
* returns TRUE. At all other times, this function returns FALSE.
|
||
*
|
||
* Side Effects:
|
||
* Nodes are removed from the toBeMade queue and job table slots
|
||
* are filled.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
MakeCheckOrder(void *v_bn, void *ignore __unused)
|
||
{
|
||
GNode *bn = v_bn;
|
||
|
||
if (bn->made >= MADE || !(bn->flags & REMAKE))
|
||
return 0;
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, "MakeCheckOrder: Waiting for .ORDER node %s%s\n",
|
||
bn->name, bn->cohort_num);
|
||
return 1;
|
||
}
|
||
|
||
static int
|
||
MakeBuildChild(void *v_cn, void *toBeMade_next)
|
||
{
|
||
GNode *cn = v_cn;
|
||
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, "MakeBuildChild: inspect %s%s, made %d, type %x\n",
|
||
cn->name, cn->cohort_num, cn->made, cn->type);
|
||
if (cn->made > DEFERRED)
|
||
return 0;
|
||
|
||
/* If this node is on the RHS of a .ORDER, check LHSs. */
|
||
if (cn->order_pred && Lst_ForEach(cn->order_pred, MakeCheckOrder, 0)) {
|
||
/* Can't build this (or anything else in this child list) yet */
|
||
cn->made = DEFERRED;
|
||
return 1;
|
||
}
|
||
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, "MakeBuildChild: schedule %s%s\n",
|
||
cn->name, cn->cohort_num);
|
||
|
||
cn->made = REQUESTED;
|
||
if (toBeMade_next == NULL)
|
||
Lst_AtEnd(toBeMade, cn);
|
||
else
|
||
Lst_InsertBefore(toBeMade, toBeMade_next, cn);
|
||
|
||
if (cn->unmade_cohorts != 0)
|
||
Lst_ForEach(cn->cohorts, MakeBuildChild, toBeMade_next);
|
||
|
||
/*
|
||
* If this node is a .WAIT node with unmade chlidren
|
||
* then don't add the next sibling.
|
||
*/
|
||
return cn->type & OP_WAIT && cn->unmade > 0;
|
||
}
|
||
|
||
/* When a .ORDER RHS node completes we do this on each LHS */
|
||
static int
|
||
MakeBuildParent(void *v_pn, void *toBeMade_next)
|
||
{
|
||
GNode *pn = v_pn;
|
||
|
||
if (pn->made != DEFERRED)
|
||
return 0;
|
||
|
||
if (MakeBuildChild(pn, toBeMade_next) == 0) {
|
||
/* Mark so that when this node is built we reschedule its parents */
|
||
pn->flags |= DONE_ORDER;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
static Boolean
|
||
MakeStartJobs(void)
|
||
{
|
||
GNode *gn;
|
||
int have_token = 0;
|
||
|
||
while (!Lst_IsEmpty (toBeMade)) {
|
||
/* Get token now to avoid cycling job-list when we only have 1 token */
|
||
if (!have_token && !Job_TokenWithdraw())
|
||
break;
|
||
have_token = 1;
|
||
|
||
gn = (GNode *)Lst_DeQueue(toBeMade);
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, "Examining %s%s...\n",
|
||
gn->name, gn->cohort_num);
|
||
|
||
if (gn->made != REQUESTED) {
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, "state %d\n", gn->made);
|
||
|
||
make_abort(gn, __LINE__);
|
||
}
|
||
|
||
if (gn->checked == checked) {
|
||
/* We've already looked at this node since a job finished... */
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, "already checked %s%s\n",
|
||
gn->name, gn->cohort_num);
|
||
gn->made = DEFERRED;
|
||
continue;
|
||
}
|
||
gn->checked = checked;
|
||
|
||
if (gn->unmade != 0) {
|
||
/*
|
||
* We can't build this yet, add all unmade children to toBeMade,
|
||
* just before the current first element.
|
||
*/
|
||
gn->made = DEFERRED;
|
||
Lst_ForEach(gn->children, MakeBuildChild, Lst_First(toBeMade));
|
||
/* and drop this node on the floor */
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, "dropped %s%s\n", gn->name, gn->cohort_num);
|
||
continue;
|
||
}
|
||
|
||
gn->made = BEINGMADE;
|
||
if (Make_OODate(gn)) {
|
||
if (DEBUG(MAKE)) {
|
||
fprintf(debug_file, "out-of-date\n");
|
||
}
|
||
if (queryFlag) {
|
||
return (TRUE);
|
||
}
|
||
Make_DoAllVar(gn);
|
||
Job_Make(gn);
|
||
have_token = 0;
|
||
} else {
|
||
if (DEBUG(MAKE)) {
|
||
fprintf(debug_file, "up-to-date\n");
|
||
}
|
||
gn->made = UPTODATE;
|
||
if (gn->type & OP_JOIN) {
|
||
/*
|
||
* Even for an up-to-date .JOIN node, we need it to have its
|
||
* context variables so references to it get the correct
|
||
* value for .TARGET when building up the context variables
|
||
* of its parent(s)...
|
||
*/
|
||
Make_DoAllVar(gn);
|
||
}
|
||
Make_Update(gn);
|
||
}
|
||
}
|
||
|
||
if (have_token)
|
||
Job_TokenReturn();
|
||
|
||
return (FALSE);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* MakePrintStatus --
|
||
* Print the status of a top-level node, viz. it being up-to-date
|
||
* already or not created due to an error in a lower level.
|
||
* Callback function for Make_Run via Lst_ForEach.
|
||
*
|
||
* Input:
|
||
* gnp Node to examine
|
||
* cyclep True if gn->unmade being non-zero implies a
|
||
* cycle in the graph, not an error in an
|
||
* inferior.
|
||
*
|
||
* Results:
|
||
* Always returns 0.
|
||
*
|
||
* Side Effects:
|
||
* A message may be printed.
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
static int
|
||
MakePrintStatusOrder(void *ognp, void *gnp)
|
||
{
|
||
GNode *ogn = ognp;
|
||
GNode *gn = gnp;
|
||
|
||
if (!(ogn->flags & REMAKE) || ogn->made > REQUESTED)
|
||
/* not waiting for this one */
|
||
return 0;
|
||
|
||
printf(" `%s%s' has .ORDER dependency against %s%s "
|
||
"(made %d, flags %x, type %x)\n",
|
||
gn->name, gn->cohort_num,
|
||
ogn->name, ogn->cohort_num, ogn->made, ogn->flags, ogn->type);
|
||
if (DEBUG(MAKE) && debug_file != stdout)
|
||
fprintf(debug_file, " `%s%s' has .ORDER dependency against %s%s "
|
||
"(made %d, flags %x, type %x)\n",
|
||
gn->name, gn->cohort_num,
|
||
ogn->name, ogn->cohort_num, ogn->made, ogn->flags, ogn->type);
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
MakePrintStatus(void *gnp, void *v_errors)
|
||
{
|
||
GNode *gn = (GNode *)gnp;
|
||
int *errors = v_errors;
|
||
|
||
if (gn->flags & DONECYCLE)
|
||
/* We've completely processed this node before, don't do it again. */
|
||
return 0;
|
||
|
||
if (gn->unmade == 0) {
|
||
gn->flags |= DONECYCLE;
|
||
switch (gn->made) {
|
||
case UPTODATE:
|
||
printf("`%s%s' is up to date.\n", gn->name, gn->cohort_num);
|
||
break;
|
||
case MADE:
|
||
break;
|
||
case UNMADE:
|
||
case DEFERRED:
|
||
case REQUESTED:
|
||
case BEINGMADE:
|
||
(*errors)++;
|
||
printf("`%s%s' was not built (made %d, flags %x, type %x)!\n",
|
||
gn->name, gn->cohort_num, gn->made, gn->flags, gn->type);
|
||
if (DEBUG(MAKE) && debug_file != stdout)
|
||
fprintf(debug_file,
|
||
"`%s%s' was not built (made %d, flags %x, type %x)!\n",
|
||
gn->name, gn->cohort_num, gn->made, gn->flags, gn->type);
|
||
/* Most likely problem is actually caused by .ORDER */
|
||
Lst_ForEach(gn->order_pred, MakePrintStatusOrder, gn);
|
||
break;
|
||
default:
|
||
/* Errors - already counted */
|
||
printf("`%s%s' not remade because of errors.\n",
|
||
gn->name, gn->cohort_num);
|
||
if (DEBUG(MAKE) && debug_file != stdout)
|
||
fprintf(debug_file, "`%s%s' not remade because of errors.\n",
|
||
gn->name, gn->cohort_num);
|
||
break;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, "MakePrintStatus: %s%s has %d unmade children\n",
|
||
gn->name, gn->cohort_num, gn->unmade);
|
||
/*
|
||
* If printing cycles and came to one that has unmade children,
|
||
* print out the cycle by recursing on its children.
|
||
*/
|
||
if (!(gn->flags & CYCLE)) {
|
||
/* Fist time we've seen this node, check all children */
|
||
gn->flags |= CYCLE;
|
||
Lst_ForEach(gn->children, MakePrintStatus, errors);
|
||
/* Mark that this node needn't be processed again */
|
||
gn->flags |= DONECYCLE;
|
||
return 0;
|
||
}
|
||
|
||
/* Only output the error once per node */
|
||
gn->flags |= DONECYCLE;
|
||
Error("Graph cycles through `%s%s'", gn->name, gn->cohort_num);
|
||
if ((*errors)++ > 100)
|
||
/* Abandon the whole error report */
|
||
return 1;
|
||
|
||
/* Reporting for our children will give the rest of the loop */
|
||
Lst_ForEach(gn->children, MakePrintStatus, errors);
|
||
return 0;
|
||
}
|
||
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Make_ExpandUse --
|
||
* Expand .USE nodes and create a new targets list
|
||
*
|
||
* Input:
|
||
* targs the initial list of targets
|
||
*
|
||
* Side Effects:
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
void
|
||
Make_ExpandUse(Lst targs)
|
||
{
|
||
GNode *gn; /* a temporary pointer */
|
||
Lst examine; /* List of targets to examine */
|
||
|
||
examine = Lst_Duplicate(targs, NULL);
|
||
|
||
/*
|
||
* Make an initial downward pass over the graph, marking nodes to be made
|
||
* as we go down. We call Suff_FindDeps to find where a node is and
|
||
* to get some children for it if it has none and also has no commands.
|
||
* If the node is a leaf, we stick it on the toBeMade queue to
|
||
* be looked at in a minute, otherwise we add its children to our queue
|
||
* and go on about our business.
|
||
*/
|
||
while (!Lst_IsEmpty (examine)) {
|
||
gn = (GNode *)Lst_DeQueue(examine);
|
||
|
||
if (gn->flags & REMAKE)
|
||
/* We've looked at this one already */
|
||
continue;
|
||
gn->flags |= REMAKE;
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, "Make_ExpandUse: examine %s%s\n",
|
||
gn->name, gn->cohort_num);
|
||
|
||
if ((gn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (gn->cohorts)) {
|
||
/* Append all the 'cohorts' to the list of things to examine */
|
||
Lst new;
|
||
new = Lst_Duplicate(gn->cohorts, NULL);
|
||
Lst_Concat(new, examine, LST_CONCLINK);
|
||
examine = new;
|
||
}
|
||
|
||
/*
|
||
* Apply any .USE rules before looking for implicit dependencies
|
||
* to make sure everything has commands that should...
|
||
* Make sure that the TARGET is set, so that we can make
|
||
* expansions.
|
||
*/
|
||
if (gn->type & OP_ARCHV) {
|
||
char *eoa, *eon;
|
||
eoa = strchr(gn->name, '(');
|
||
eon = strchr(gn->name, ')');
|
||
if (eoa == NULL || eon == NULL)
|
||
continue;
|
||
*eoa = '\0';
|
||
*eon = '\0';
|
||
Var_Set(MEMBER, eoa + 1, gn, 0);
|
||
Var_Set(ARCHIVE, gn->name, gn, 0);
|
||
*eoa = '(';
|
||
*eon = ')';
|
||
}
|
||
|
||
(void)Dir_MTime(gn);
|
||
Var_Set(TARGET, gn->path ? gn->path : gn->name, gn, 0);
|
||
Lst_ForEach(gn->children, MakeUnmark, gn);
|
||
Lst_ForEach(gn->children, MakeHandleUse, gn);
|
||
|
||
if ((gn->type & OP_MADE) == 0)
|
||
Suff_FindDeps(gn);
|
||
else {
|
||
/* Pretend we made all this node's children */
|
||
Lst_ForEach(gn->children, MakeFindChild, gn);
|
||
if (gn->unmade != 0)
|
||
printf("Warning: %s%s still has %d unmade children\n",
|
||
gn->name, gn->cohort_num, gn->unmade);
|
||
}
|
||
|
||
if (gn->unmade != 0)
|
||
Lst_ForEach(gn->children, MakeAddChild, examine);
|
||
}
|
||
|
||
Lst_Destroy(examine, NULL);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Make_ProcessWait --
|
||
* Convert .WAIT nodes into dependencies
|
||
*
|
||
* Input:
|
||
* targs the initial list of targets
|
||
*
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
link_parent(void *cnp, void *pnp)
|
||
{
|
||
GNode *cn = cnp;
|
||
GNode *pn = pnp;
|
||
|
||
Lst_AtEnd(pn->children, cn);
|
||
Lst_AtEnd(cn->parents, pn);
|
||
pn->unmade++;
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
add_wait_dep(void *v_cn, void *v_wn)
|
||
{
|
||
GNode *cn = v_cn;
|
||
GNode *wn = v_wn;
|
||
|
||
if (cn == wn)
|
||
return 1;
|
||
|
||
if (cn == NULL || wn == NULL) {
|
||
printf("bad wait dep %p %p\n", cn, wn);
|
||
exit(4);
|
||
}
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, ".WAIT: add dependency %s%s -> %s\n",
|
||
cn->name, cn->cohort_num, wn->name);
|
||
|
||
Lst_AtEnd(wn->children, cn);
|
||
wn->unmade++;
|
||
Lst_AtEnd(cn->parents, wn);
|
||
return 0;
|
||
}
|
||
|
||
static void
|
||
Make_ProcessWait(Lst targs)
|
||
{
|
||
GNode *pgn; /* 'parent' node we are examining */
|
||
GNode *cgn; /* Each child in turn */
|
||
LstNode owln; /* Previous .WAIT node */
|
||
Lst examine; /* List of targets to examine */
|
||
LstNode ln;
|
||
|
||
/*
|
||
* We need all the nodes to have a common parent in order for the
|
||
* .WAIT and .ORDER scheduling to work.
|
||
* Perhaps this should be done earlier...
|
||
*/
|
||
|
||
pgn = Targ_NewGN(".MAIN");
|
||
pgn->flags = REMAKE;
|
||
pgn->type = OP_PHONY | OP_DEPENDS;
|
||
/* Get it displayed in the diag dumps */
|
||
Lst_AtFront(Targ_List(), pgn);
|
||
|
||
Lst_ForEach(targs, link_parent, pgn);
|
||
|
||
/* Start building with the 'dummy' .MAIN' node */
|
||
MakeBuildChild(pgn, NULL);
|
||
|
||
examine = Lst_Init(FALSE);
|
||
Lst_AtEnd(examine, pgn);
|
||
|
||
while (!Lst_IsEmpty (examine)) {
|
||
pgn = Lst_DeQueue(examine);
|
||
|
||
/* We only want to process each child-list once */
|
||
if (pgn->flags & DONE_WAIT)
|
||
continue;
|
||
pgn->flags |= DONE_WAIT;
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, "Make_ProcessWait: examine %s\n", pgn->name);
|
||
|
||
if ((pgn->type & OP_DOUBLEDEP) && !Lst_IsEmpty (pgn->cohorts)) {
|
||
/* Append all the 'cohorts' to the list of things to examine */
|
||
Lst new;
|
||
new = Lst_Duplicate(pgn->cohorts, NULL);
|
||
Lst_Concat(new, examine, LST_CONCLINK);
|
||
examine = new;
|
||
}
|
||
|
||
owln = Lst_First(pgn->children);
|
||
Lst_Open(pgn->children);
|
||
for (; (ln = Lst_Next(pgn->children)) != NULL; ) {
|
||
cgn = Lst_Datum(ln);
|
||
if (cgn->type & OP_WAIT) {
|
||
/* Make the .WAIT node depend on the previous children */
|
||
Lst_ForEachFrom(pgn->children, owln, add_wait_dep, cgn);
|
||
owln = ln;
|
||
} else {
|
||
Lst_AtEnd(examine, cgn);
|
||
}
|
||
}
|
||
Lst_Close(pgn->children);
|
||
}
|
||
|
||
Lst_Destroy(examine, NULL);
|
||
}
|
||
|
||
/*-
|
||
*-----------------------------------------------------------------------
|
||
* Make_Run --
|
||
* Initialize the nodes to remake and the list of nodes which are
|
||
* ready to be made by doing a breadth-first traversal of the graph
|
||
* starting from the nodes in the given list. Once this traversal
|
||
* is finished, all the 'leaves' of the graph are in the toBeMade
|
||
* queue.
|
||
* Using this queue and the Job module, work back up the graph,
|
||
* calling on MakeStartJobs to keep the job table as full as
|
||
* possible.
|
||
*
|
||
* Input:
|
||
* targs the initial list of targets
|
||
*
|
||
* Results:
|
||
* TRUE if work was done. FALSE otherwise.
|
||
*
|
||
* Side Effects:
|
||
* The make field of all nodes involved in the creation of the given
|
||
* targets is set to 1. The toBeMade list is set to contain all the
|
||
* 'leaves' of these subgraphs.
|
||
*-----------------------------------------------------------------------
|
||
*/
|
||
Boolean
|
||
Make_Run(Lst targs)
|
||
{
|
||
int errors; /* Number of errors the Job module reports */
|
||
|
||
/* Start trying to make the current targets... */
|
||
toBeMade = Lst_Init(FALSE);
|
||
|
||
Make_ExpandUse(targs);
|
||
Make_ProcessWait(targs);
|
||
|
||
if (DEBUG(MAKE)) {
|
||
fprintf(debug_file, "#***# full graph\n");
|
||
Targ_PrintGraph(1);
|
||
}
|
||
|
||
if (queryFlag) {
|
||
/*
|
||
* We wouldn't do any work unless we could start some jobs in the
|
||
* next loop... (we won't actually start any, of course, this is just
|
||
* to see if any of the targets was out of date)
|
||
*/
|
||
return (MakeStartJobs());
|
||
}
|
||
/*
|
||
* Initialization. At the moment, no jobs are running and until some
|
||
* get started, nothing will happen since the remaining upward
|
||
* traversal of the graph is performed by the routines in job.c upon
|
||
* the finishing of a job. So we fill the Job table as much as we can
|
||
* before going into our loop.
|
||
*/
|
||
(void)MakeStartJobs();
|
||
|
||
/*
|
||
* Main Loop: The idea here is that the ending of jobs will take
|
||
* care of the maintenance of data structures and the waiting for output
|
||
* will cause us to be idle most of the time while our children run as
|
||
* much as possible. Because the job table is kept as full as possible,
|
||
* the only time when it will be empty is when all the jobs which need
|
||
* running have been run, so that is the end condition of this loop.
|
||
* Note that the Job module will exit if there were any errors unless the
|
||
* keepgoing flag was given.
|
||
*/
|
||
while (!Lst_IsEmpty(toBeMade) || jobTokensRunning > 0) {
|
||
Job_CatchOutput();
|
||
(void)MakeStartJobs();
|
||
}
|
||
|
||
errors = Job_Finish();
|
||
|
||
/*
|
||
* Print the final status of each target. E.g. if it wasn't made
|
||
* because some inferior reported an error.
|
||
*/
|
||
if (DEBUG(MAKE))
|
||
fprintf(debug_file, "done: errors %d\n", errors);
|
||
if (errors == 0) {
|
||
Lst_ForEach(targs, MakePrintStatus, &errors);
|
||
if (DEBUG(MAKE)) {
|
||
fprintf(debug_file, "done: errors %d\n", errors);
|
||
if (errors)
|
||
Targ_PrintGraph(4);
|
||
}
|
||
}
|
||
return errors != 0;
|
||
}
|