846 lines
23 KiB
C
846 lines
23 KiB
C
/* $NetBSD: targ.c,v 1.49 2006/12/21 20:05:37 dsl Exp $ */
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/*
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* Copyright (c) 1988, 1989, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1989 by Berkeley Softworks
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef MAKE_NATIVE
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static char rcsid[] = "$NetBSD: targ.c,v 1.49 2006/12/21 20:05:37 dsl Exp $";
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#else
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)targ.c 8.2 (Berkeley) 3/19/94";
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#else
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__RCSID("$NetBSD: targ.c,v 1.49 2006/12/21 20:05:37 dsl Exp $");
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#endif
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#endif /* not lint */
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#endif
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/*-
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* targ.c --
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* Functions for maintaining the Lst allTargets. Target nodes are
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* kept in two structures: a Lst, maintained by the list library, and a
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* hash table, maintained by the hash library.
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*
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* Interface:
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* Targ_Init Initialization procedure.
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*
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* Targ_End Cleanup the module
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*
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* Targ_List Return the list of all targets so far.
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*
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* Targ_NewGN Create a new GNode for the passed target
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* (string). The node is *not* placed in the
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* hash table, though all its fields are
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* initialized.
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*
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* Targ_FindNode Find the node for a given target, creating
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* and storing it if it doesn't exist and the
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* flags are right (TARG_CREATE)
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*
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* Targ_FindList Given a list of names, find nodes for all
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* of them. If a name doesn't exist and the
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* TARG_NOCREATE flag was given, an error message
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* is printed. Else, if a name doesn't exist,
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* its node is created.
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*
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* Targ_Ignore Return TRUE if errors should be ignored when
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* creating the given target.
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*
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* Targ_Silent Return TRUE if we should be silent when
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* creating the given target.
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*
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* Targ_Precious Return TRUE if the target is precious and
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* should not be removed if we are interrupted.
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*
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* Targ_Propagate Propagate information between related
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* nodes. Should be called after the
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* makefiles are parsed but before any
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* action is taken.
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*
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* Debugging:
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* Targ_PrintGraph Print out the entire graphm all variables
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* and statistics for the directory cache. Should
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* print something for suffixes, too, but...
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*/
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#include <stdio.h>
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#include <time.h>
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#include "make.h"
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#include "hash.h"
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#include "dir.h"
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static Lst allTargets; /* the list of all targets found so far */
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#ifdef CLEANUP
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static Lst allGNs; /* List of all the GNodes */
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#endif
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static Hash_Table targets; /* a hash table of same */
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#define HTSIZE 191 /* initial size of hash table */
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static int TargPrintOnlySrc(ClientData, ClientData);
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static int TargPrintName(ClientData, ClientData);
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#ifdef CLEANUP
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static void TargFreeGN(ClientData);
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#endif
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static int TargPropagateCohort(ClientData, ClientData);
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static int TargPropagateNode(ClientData, ClientData);
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/*-
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*-----------------------------------------------------------------------
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* Targ_Init --
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* Initialize this module
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*
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* Results:
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* None
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*
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* Side Effects:
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* The allTargets list and the targets hash table are initialized
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*-----------------------------------------------------------------------
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*/
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void
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Targ_Init(void)
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{
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allTargets = Lst_Init(FALSE);
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Hash_InitTable(&targets, HTSIZE);
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}
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/*-
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*-----------------------------------------------------------------------
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* Targ_End --
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* Finalize this module
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*
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* Results:
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* None
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*
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* Side Effects:
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* All lists and gnodes are cleared
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*-----------------------------------------------------------------------
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*/
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void
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Targ_End(void)
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{
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#ifdef CLEANUP
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Lst_Destroy(allTargets, NOFREE);
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if (allGNs)
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Lst_Destroy(allGNs, TargFreeGN);
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Hash_DeleteTable(&targets);
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#endif
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}
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/*-
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*-----------------------------------------------------------------------
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* Targ_List --
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* Return the list of all targets
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*
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* Results:
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* The list of all targets.
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*
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* Side Effects:
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* None
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*-----------------------------------------------------------------------
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*/
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Lst
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Targ_List(void)
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{
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return allTargets;
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}
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/*-
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*-----------------------------------------------------------------------
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* Targ_NewGN --
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* Create and initialize a new graph node
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*
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* Input:
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* name the name to stick in the new node
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*
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* Results:
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* An initialized graph node with the name field filled with a copy
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* of the passed name
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*
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* Side Effects:
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* The gnode is added to the list of all gnodes.
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*-----------------------------------------------------------------------
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*/
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GNode *
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Targ_NewGN(const char *name)
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{
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GNode *gn;
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gn = emalloc(sizeof(GNode));
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gn->name = estrdup(name);
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gn->uname = NULL;
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gn->path = NULL;
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if (name[0] == '-' && name[1] == 'l') {
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gn->type = OP_LIB;
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} else {
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gn->type = 0;
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}
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gn->unmade = 0;
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gn->unmade_cohorts = 0;
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gn->cohort_num[0] = 0;
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gn->centurion = NULL;
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gn->made = UNMADE;
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gn->flags = 0;
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gn->checked = 0;
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gn->mtime = gn->cmtime = 0;
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gn->iParents = Lst_Init(FALSE);
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gn->cohorts = Lst_Init(FALSE);
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gn->parents = Lst_Init(FALSE);
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gn->children = Lst_Init(FALSE);
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gn->order_pred = Lst_Init(FALSE);
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gn->order_succ = Lst_Init(FALSE);
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Hash_InitTable(&gn->context, 0);
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gn->commands = Lst_Init(FALSE);
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gn->suffix = NULL;
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gn->lineno = 0;
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gn->fname = NULL;
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#ifdef CLEANUP
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if (allGNs == NULL)
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allGNs = Lst_Init(FALSE);
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Lst_AtEnd(allGNs, gn);
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#endif
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return (gn);
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}
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#ifdef CLEANUP
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/*-
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*-----------------------------------------------------------------------
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* TargFreeGN --
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* Destroy a GNode
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*
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* Results:
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* None.
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*
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* Side Effects:
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* None.
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*-----------------------------------------------------------------------
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*/
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static void
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TargFreeGN(ClientData gnp)
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{
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GNode *gn = (GNode *)gnp;
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free(gn->name);
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if (gn->uname)
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free(gn->uname);
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if (gn->path)
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free(gn->path);
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/* gn->fname points to name allocated when file was opened, don't free */
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Lst_Destroy(gn->iParents, NOFREE);
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Lst_Destroy(gn->cohorts, NOFREE);
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Lst_Destroy(gn->parents, NOFREE);
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Lst_Destroy(gn->children, NOFREE);
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Lst_Destroy(gn->order_succ, NOFREE);
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Lst_Destroy(gn->order_pred, NOFREE);
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Hash_DeleteTable(&gn->context);
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Lst_Destroy(gn->commands, NOFREE);
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free(gn);
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}
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#endif
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/*-
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*-----------------------------------------------------------------------
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* Targ_FindNode --
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* Find a node in the list using the given name for matching
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*
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* Input:
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* name the name to find
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* flags flags governing events when target not
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* found
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*
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* Results:
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* The node in the list if it was. If it wasn't, return NILGNODE of
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* flags was TARG_NOCREATE or the newly created and initialized node
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* if it was TARG_CREATE
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*
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* Side Effects:
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* Sometimes a node is created and added to the list
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*-----------------------------------------------------------------------
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*/
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GNode *
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Targ_FindNode(const char *name, int flags)
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{
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GNode *gn; /* node in that element */
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Hash_Entry *he; /* New or used hash entry for node */
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Boolean isNew; /* Set TRUE if Hash_CreateEntry had to create */
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/* an entry for the node */
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if (!(flags & (TARG_CREATE | TARG_NOHASH))) {
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he = Hash_FindEntry(&targets, name);
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if (he == NULL)
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return (NILGNODE);
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return (GNode *)Hash_GetValue(he);
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}
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if (!(flags & TARG_NOHASH)) {
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he = Hash_CreateEntry(&targets, name, &isNew);
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if (!isNew)
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return (GNode *)Hash_GetValue(he);
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}
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gn = Targ_NewGN(name);
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if (!(flags & TARG_NOHASH))
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Hash_SetValue(he, gn);
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Var_Append(".ALLTARGETS", name, VAR_GLOBAL);
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(void)Lst_AtEnd(allTargets, gn);
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return gn;
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}
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/*-
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*-----------------------------------------------------------------------
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* Targ_FindList --
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* Make a complete list of GNodes from the given list of names
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*
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* Input:
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* name list of names to find
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* flags flags used if no node is found for a given name
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*
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* Results:
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* A complete list of graph nodes corresponding to all instances of all
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* the names in names.
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*
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* Side Effects:
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* If flags is TARG_CREATE, nodes will be created for all names in
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* names which do not yet have graph nodes. If flags is TARG_NOCREATE,
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* an error message will be printed for each name which can't be found.
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* -----------------------------------------------------------------------
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*/
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Lst
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Targ_FindList(Lst names, int flags)
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{
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Lst nodes; /* result list */
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LstNode ln; /* name list element */
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GNode *gn; /* node in tLn */
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char *name;
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nodes = Lst_Init(FALSE);
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if (Lst_Open(names) == FAILURE) {
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return (nodes);
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}
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while ((ln = Lst_Next(names)) != NILLNODE) {
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name = (char *)Lst_Datum(ln);
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gn = Targ_FindNode(name, flags);
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if (gn != NILGNODE) {
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/*
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* Note: Lst_AtEnd must come before the Lst_Concat so the nodes
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* are added to the list in the order in which they were
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* encountered in the makefile.
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*/
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(void)Lst_AtEnd(nodes, gn);
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} else if (flags == TARG_NOCREATE) {
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Error("\"%s\" -- target unknown.", name);
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}
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}
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Lst_Close(names);
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return (nodes);
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}
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/*-
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*-----------------------------------------------------------------------
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* Targ_Ignore --
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* Return true if should ignore errors when creating gn
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*
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* Input:
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* gn node to check for
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*
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* Results:
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* TRUE if should ignore errors
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*
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* Side Effects:
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* None
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*-----------------------------------------------------------------------
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*/
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Boolean
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Targ_Ignore(GNode *gn)
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{
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if (ignoreErrors || gn->type & OP_IGNORE) {
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return (TRUE);
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} else {
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return (FALSE);
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}
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}
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/*-
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*-----------------------------------------------------------------------
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* Targ_Silent --
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* Return true if be silent when creating gn
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*
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* Input:
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* gn node to check for
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*
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* Results:
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* TRUE if should be silent
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*
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* Side Effects:
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* None
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*-----------------------------------------------------------------------
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*/
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Boolean
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Targ_Silent(GNode *gn)
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{
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if (beSilent || gn->type & OP_SILENT) {
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return (TRUE);
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} else {
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return (FALSE);
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}
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}
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/*-
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*-----------------------------------------------------------------------
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* Targ_Precious --
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* See if the given target is precious
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*
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* Input:
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* gn the node to check
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*
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* Results:
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* TRUE if it is precious. FALSE otherwise
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*
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* Side Effects:
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* None
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*-----------------------------------------------------------------------
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*/
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Boolean
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Targ_Precious(GNode *gn)
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{
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if (allPrecious || (gn->type & (OP_PRECIOUS|OP_DOUBLEDEP))) {
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return (TRUE);
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} else {
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return (FALSE);
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}
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}
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/******************* DEBUG INFO PRINTING ****************/
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static GNode *mainTarg; /* the main target, as set by Targ_SetMain */
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/*-
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*-----------------------------------------------------------------------
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* Targ_SetMain --
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* Set our idea of the main target we'll be creating. Used for
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* debugging output.
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*
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* Input:
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* gn The main target we'll create
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*
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* Results:
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* None.
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*
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* Side Effects:
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* "mainTarg" is set to the main target's node.
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*-----------------------------------------------------------------------
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*/
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void
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Targ_SetMain(GNode *gn)
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{
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mainTarg = gn;
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}
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static int
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TargPrintName(ClientData gnp, ClientData pflags __unused)
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{
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GNode *gn = (GNode *)gnp;
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fprintf(debug_file, "%s%s ", gn->name, gn->cohort_num);
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return 0;
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}
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int
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Targ_PrintCmd(ClientData cmd, ClientData dummy)
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{
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fprintf(debug_file, "\t%s\n", (char *)cmd);
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return (dummy ? 0 : 0);
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}
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/*-
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*-----------------------------------------------------------------------
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* Targ_FmtTime --
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* Format a modification time in some reasonable way and return it.
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*
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* Results:
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* The time reformatted.
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*
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* Side Effects:
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* The time is placed in a static area, so it is overwritten
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* with each call.
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*
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*-----------------------------------------------------------------------
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*/
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char *
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Targ_FmtTime(time_t tm)
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{
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struct tm *parts;
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static char buf[128];
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parts = localtime(&tm);
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(void)strftime(buf, sizeof buf, "%k:%M:%S %b %d, %Y", parts);
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return(buf);
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}
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/*-
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*-----------------------------------------------------------------------
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* Targ_PrintType --
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* Print out a type field giving only those attributes the user can
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* set.
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*
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* Results:
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*
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* Side Effects:
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*
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*-----------------------------------------------------------------------
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*/
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void
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Targ_PrintType(int type)
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{
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int tbit;
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|
|
#define PRINTBIT(attr) case CONCAT(OP_,attr): fprintf(debug_file, "." #attr " "); break
|
|
#define PRINTDBIT(attr) case CONCAT(OP_,attr): if (DEBUG(TARG))fprintf(debug_file, "." #attr " "); break
|
|
|
|
type &= ~OP_OPMASK;
|
|
|
|
while (type) {
|
|
tbit = 1 << (ffs(type) - 1);
|
|
type &= ~tbit;
|
|
|
|
switch(tbit) {
|
|
PRINTBIT(OPTIONAL);
|
|
PRINTBIT(USE);
|
|
PRINTBIT(EXEC);
|
|
PRINTBIT(IGNORE);
|
|
PRINTBIT(PRECIOUS);
|
|
PRINTBIT(SILENT);
|
|
PRINTBIT(MAKE);
|
|
PRINTBIT(JOIN);
|
|
PRINTBIT(INVISIBLE);
|
|
PRINTBIT(NOTMAIN);
|
|
PRINTDBIT(LIB);
|
|
/*XXX: MEMBER is defined, so CONCAT(OP_,MEMBER) gives OP_"%" */
|
|
case OP_MEMBER: if (DEBUG(TARG))fprintf(debug_file, ".MEMBER "); break;
|
|
PRINTDBIT(ARCHV);
|
|
PRINTDBIT(MADE);
|
|
PRINTDBIT(PHONY);
|
|
}
|
|
}
|
|
}
|
|
|
|
static const char *
|
|
made_name(enum enum_made made)
|
|
{
|
|
switch (made) {
|
|
case UNMADE: return "unmade";
|
|
case DEFERRED: return "deferred";
|
|
case REQUESTED: return "requested";
|
|
case BEINGMADE: return "being made";
|
|
case MADE: return "made";
|
|
case UPTODATE: return "up-to-date";
|
|
case ERROR: return "error when made";
|
|
case ABORTED: return "aborted";
|
|
default: return "unknown enum_made value";
|
|
}
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* TargPrintNode --
|
|
* print the contents of a node
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
int
|
|
Targ_PrintNode(ClientData gnp, ClientData passp)
|
|
{
|
|
GNode *gn = (GNode *)gnp;
|
|
int pass = passp ? *(int *)passp : 0;
|
|
|
|
fprintf(debug_file, "# %s%s, flags %x, type %x, made %d\n",
|
|
gn->name, gn->cohort_num, gn->flags, gn->type, gn->made);
|
|
if (gn->flags == 0)
|
|
return 0;
|
|
|
|
if (!OP_NOP(gn->type)) {
|
|
fprintf(debug_file, "#\n");
|
|
if (gn == mainTarg) {
|
|
fprintf(debug_file, "# *** MAIN TARGET ***\n");
|
|
}
|
|
if (pass >= 2) {
|
|
if (gn->unmade) {
|
|
fprintf(debug_file, "# %d unmade children\n", gn->unmade);
|
|
} else {
|
|
fprintf(debug_file, "# No unmade children\n");
|
|
}
|
|
if (! (gn->type & (OP_JOIN|OP_USE|OP_USEBEFORE|OP_EXEC))) {
|
|
if (gn->mtime != 0) {
|
|
fprintf(debug_file, "# last modified %s: %s\n",
|
|
Targ_FmtTime(gn->mtime),
|
|
made_name(gn->made));
|
|
} else if (gn->made != UNMADE) {
|
|
fprintf(debug_file, "# non-existent (maybe): %s\n",
|
|
made_name(gn->made));
|
|
} else {
|
|
fprintf(debug_file, "# unmade\n");
|
|
}
|
|
}
|
|
if (!Lst_IsEmpty (gn->iParents)) {
|
|
fprintf(debug_file, "# implicit parents: ");
|
|
Lst_ForEach(gn->iParents, TargPrintName, NULL);
|
|
fprintf(debug_file, "\n");
|
|
}
|
|
} else {
|
|
if (gn->unmade)
|
|
fprintf(debug_file, "# %d unmade children\n", gn->unmade);
|
|
}
|
|
if (!Lst_IsEmpty (gn->parents)) {
|
|
fprintf(debug_file, "# parents: ");
|
|
Lst_ForEach(gn->parents, TargPrintName, NULL);
|
|
fprintf(debug_file, "\n");
|
|
}
|
|
if (!Lst_IsEmpty (gn->order_pred)) {
|
|
fprintf(debug_file, "# order_pred: ");
|
|
Lst_ForEach(gn->order_pred, TargPrintName, NULL);
|
|
fprintf(debug_file, "\n");
|
|
}
|
|
if (!Lst_IsEmpty (gn->order_succ)) {
|
|
fprintf(debug_file, "# order_succ: ");
|
|
Lst_ForEach(gn->order_succ, TargPrintName, NULL);
|
|
fprintf(debug_file, "\n");
|
|
}
|
|
|
|
fprintf(debug_file, "%-16s", gn->name);
|
|
switch (gn->type & OP_OPMASK) {
|
|
case OP_DEPENDS:
|
|
fprintf(debug_file, ": "); break;
|
|
case OP_FORCE:
|
|
fprintf(debug_file, "! "); break;
|
|
case OP_DOUBLEDEP:
|
|
fprintf(debug_file, ":: "); break;
|
|
}
|
|
Targ_PrintType(gn->type);
|
|
Lst_ForEach(gn->children, TargPrintName, NULL);
|
|
fprintf(debug_file, "\n");
|
|
Lst_ForEach(gn->commands, Targ_PrintCmd, NULL);
|
|
fprintf(debug_file, "\n\n");
|
|
if (gn->type & OP_DOUBLEDEP) {
|
|
Lst_ForEach(gn->cohorts, Targ_PrintNode, &pass);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* TargPrintOnlySrc --
|
|
* Print only those targets that are just a source.
|
|
*
|
|
* Results:
|
|
* 0.
|
|
*
|
|
* Side Effects:
|
|
* The name of each file is printed preceded by #\t
|
|
*
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
TargPrintOnlySrc(ClientData gnp, ClientData dummy __unused)
|
|
{
|
|
GNode *gn = (GNode *)gnp;
|
|
if (!OP_NOP(gn->type))
|
|
return 0;
|
|
|
|
fprintf(debug_file, "#\t%s [%s] ",
|
|
gn->name, gn->path ? gn->path : gn->name);
|
|
Targ_PrintType(gn->type);
|
|
fprintf(debug_file, "\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Targ_PrintGraph --
|
|
* print the entire graph. heh heh
|
|
*
|
|
* Input:
|
|
* pass Which pass this is. 1 => no processing
|
|
* 2 => processing done
|
|
*
|
|
* Results:
|
|
* none
|
|
*
|
|
* Side Effects:
|
|
* lots o' output
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Targ_PrintGraph(int pass)
|
|
{
|
|
fprintf(debug_file, "#*** Input graph:\n");
|
|
Lst_ForEach(allTargets, Targ_PrintNode, &pass);
|
|
fprintf(debug_file, "\n\n");
|
|
fprintf(debug_file, "#\n# Files that are only sources:\n");
|
|
Lst_ForEach(allTargets, TargPrintOnlySrc, NULL);
|
|
fprintf(debug_file, "#*** Global Variables:\n");
|
|
Var_Dump(VAR_GLOBAL);
|
|
fprintf(debug_file, "#*** Command-line Variables:\n");
|
|
Var_Dump(VAR_CMD);
|
|
fprintf(debug_file, "\n");
|
|
Dir_PrintDirectories();
|
|
fprintf(debug_file, "\n");
|
|
Suff_PrintAll();
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* TargPropagateNode --
|
|
* Propagate information from a single node to related nodes if
|
|
* appropriate.
|
|
*
|
|
* Input:
|
|
* gnp The node that we are processing.
|
|
*
|
|
* Results:
|
|
* Always returns 0, for the benefit of Lst_ForEach().
|
|
*
|
|
* Side Effects:
|
|
* Information is propagated from this node to cohort or child
|
|
* nodes.
|
|
*
|
|
* If the node was defined with "::", then TargPropagateCohort()
|
|
* will be called for each cohort node.
|
|
*
|
|
* If the node has recursive predecessors, then
|
|
* TargPropagateRecpred() will be called for each recursive
|
|
* predecessor.
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
TargPropagateNode(ClientData gnp, ClientData junk __unused)
|
|
{
|
|
GNode *gn = (GNode *)gnp;
|
|
|
|
if (gn->type & OP_DOUBLEDEP)
|
|
Lst_ForEach(gn->cohorts, TargPropagateCohort, gnp);
|
|
return (0);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* TargPropagateCohort --
|
|
* Propagate some bits in the type mask from a node to
|
|
* a related cohort node.
|
|
*
|
|
* Input:
|
|
* cnp The node that we are processing.
|
|
* gnp Another node that has cnp as a cohort.
|
|
*
|
|
* Results:
|
|
* Always returns 0, for the benefit of Lst_ForEach().
|
|
*
|
|
* Side Effects:
|
|
* cnp's type bitmask is modified to incorporate some of the
|
|
* bits from gnp's type bitmask. (XXX need a better explanation.)
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
static int
|
|
TargPropagateCohort(ClientData cgnp, ClientData pgnp)
|
|
{
|
|
GNode *cgn = (GNode *)cgnp;
|
|
GNode *pgn = (GNode *)pgnp;
|
|
|
|
cgn->type |= pgn->type & ~OP_OPMASK;
|
|
return (0);
|
|
}
|
|
|
|
/*-
|
|
*-----------------------------------------------------------------------
|
|
* Targ_Propagate --
|
|
* Propagate information between related nodes. Should be called
|
|
* after the makefiles are parsed but before any action is taken.
|
|
*
|
|
* Results:
|
|
* none
|
|
*
|
|
* Side Effects:
|
|
* Information is propagated between related nodes throughout the
|
|
* graph.
|
|
*-----------------------------------------------------------------------
|
|
*/
|
|
void
|
|
Targ_Propagate(void)
|
|
{
|
|
Lst_ForEach(allTargets, TargPropagateNode, NULL);
|
|
}
|