2c3632d14f
Lots of code refactoring, simplification and cleanup. Lots of new unit-tests providing much higher code coverage. All courtesy of rillig at netbsd. Other significant changes: o new read-only variable .SHELL which provides the path of the shell used to run scripts (as defined by the .SHELL target). o variable parsing detects more errors. o new debug option -dl: LINT mode, does the equivalent of := for all variable assignments so that file and line number are reported for variable parse errors.
599 lines
17 KiB
C
599 lines
17 KiB
C
/* $NetBSD: targ.c,v 1.81 2020/09/01 20:54:00 rillig 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 1.81 2020/09/01 20:54:00 rillig 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 1.81 2020/09/01 20:54:00 rillig 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 and a hash table.
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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 "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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static int TargPrintOnlySrc(void *, void *);
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static int TargPrintName(void *, void *);
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#ifdef CLEANUP
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static void TargFreeGN(void *);
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#endif
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void
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Targ_Init(void)
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{
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allTargets = Lst_Init();
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Hash_InitTable(&targets, 191);
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}
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void
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Targ_End(void)
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{
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Targ_Stats();
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#ifdef CLEANUP
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Lst_Free(allTargets);
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if (allGNs != NULL)
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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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void
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Targ_Stats(void)
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{
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Hash_DebugStats(&targets, "targets");
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}
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/* Return the list of all targets. */
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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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/* Create and initialize a new graph node. The gnode is added to the list of
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* all gnodes.
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*
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* Input:
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* name the name of the node, such as "clean", "src.c"
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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 = bmake_malloc(sizeof(GNode));
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gn->name = bmake_strdup(name);
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gn->uname = NULL;
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gn->path = NULL;
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gn->type = name[0] == '-' && name[1] == 'l' ? OP_LIB : 0;
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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 = 0;
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gn->cmgn = NULL;
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gn->implicitParents = Lst_Init();
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gn->cohorts = Lst_Init();
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gn->parents = Lst_Init();
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gn->children = Lst_Init();
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gn->order_pred = Lst_Init();
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gn->order_succ = Lst_Init();
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Hash_InitTable(&gn->context, 0);
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gn->commands = Lst_Init();
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gn->suffix = NULL;
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gn->fname = NULL;
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gn->lineno = 0;
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#ifdef CLEANUP
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if (allGNs == NULL)
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allGNs = Lst_Init();
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Lst_Append(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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static void
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TargFreeGN(void *gnp)
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{
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GNode *gn = (GNode *)gnp;
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free(gn->name);
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free(gn->uname);
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free(gn->path);
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Lst_Free(gn->implicitParents);
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Lst_Free(gn->cohorts);
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Lst_Free(gn->parents);
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Lst_Free(gn->children);
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Lst_Free(gn->order_succ);
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Lst_Free(gn->order_pred);
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Hash_DeleteTable(&gn->context);
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Lst_Free(gn->commands);
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/* XXX: does gn->suffix need to be freed? It is reference-counted. */
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/* gn->fname points to name allocated when file was opened, don't free */
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free(gn);
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}
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#endif
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/* Find a node in the list using the given name for matching.
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* If the node is created, it is added to the .ALLTARGETS list.
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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 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 NULL if
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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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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 = NULL; /* 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 NULL;
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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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Lst_Append(allTargets, gn);
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if (doing_depend)
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gn->flags |= FROM_DEPEND;
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return gn;
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}
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/* Make a complete list of GNodes from the given list of names.
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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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* 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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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();
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Lst_Open(names);
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while ((ln = Lst_Next(names)) != NULL) {
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name = LstNode_Datum(ln);
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gn = Targ_FindNode(name, flags);
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if (gn != NULL) {
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/*
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* Note: Lst_Append 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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Lst_Append(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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/* Return true if should ignore errors when creating gn. */
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Boolean
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Targ_Ignore(GNode *gn)
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{
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return ignoreErrors || gn->type & OP_IGNORE;
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}
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/* Return true if be silent when creating gn. */
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Boolean
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Targ_Silent(GNode *gn)
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{
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return beSilent || gn->type & OP_SILENT;
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}
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/* See if the given target is precious. */
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Boolean
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Targ_Precious(GNode *gn)
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{
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return allPrecious || gn->type & (OP_PRECIOUS | OP_DOUBLEDEP);
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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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/* Set our idea of the main target we'll be creating. Used for debugging
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* output. */
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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(void *gnp, void *pflags MAKE_ATTR_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(void *cmd, void *dummy MAKE_ATTR_UNUSED)
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{
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fprintf(debug_file, "\t%s\n", (char *)cmd);
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return 0;
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}
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/* Format a modification time in some reasonable way and return it.
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* The time is placed in a static area, so it is overwritten with each call. */
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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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/* Print out a type field giving only those attributes the user can set. */
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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
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#define PRINTDBIT(attr) case CONCAT(OP_,attr): if (DEBUG(TARG))fprintf(debug_file, "." #attr " "); break
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type &= ~OP_OPMASK;
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while (type) {
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tbit = 1 << (ffs(type) - 1);
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type &= ~tbit;
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switch(tbit) {
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PRINTBIT(OPTIONAL);
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PRINTBIT(USE);
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PRINTBIT(EXEC);
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PRINTBIT(IGNORE);
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PRINTBIT(PRECIOUS);
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PRINTBIT(SILENT);
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PRINTBIT(MAKE);
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PRINTBIT(JOIN);
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PRINTBIT(INVISIBLE);
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PRINTBIT(NOTMAIN);
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PRINTDBIT(LIB);
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/*XXX: MEMBER is defined, so CONCAT(OP_,MEMBER) gives OP_"%" */
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case OP_MEMBER: if (DEBUG(TARG))fprintf(debug_file, ".MEMBER "); break;
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PRINTDBIT(ARCHV);
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PRINTDBIT(MADE);
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PRINTDBIT(PHONY);
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}
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}
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}
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static const char *
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made_name(GNodeMade made)
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{
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switch (made) {
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case UNMADE: return "unmade";
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case DEFERRED: return "deferred";
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case REQUESTED: return "requested";
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case BEINGMADE: return "being made";
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case MADE: return "made";
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case UPTODATE: return "up-to-date";
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case ERROR: return "error when made";
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case ABORTED: return "aborted";
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default: return "unknown enum_made value";
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}
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}
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/* Print the contents of a node. */
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int
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Targ_PrintNode(void *gnp, void *passp)
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{
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GNode *gn = (GNode *)gnp;
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int pass = passp ? *(int *)passp : 0;
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fprintf(debug_file, "# %s%s", gn->name, gn->cohort_num);
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GNode_FprintDetails(debug_file, ", ", gn, "\n");
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if (gn->flags == 0)
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return 0;
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if (!OP_NOP(gn->type)) {
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fprintf(debug_file, "#\n");
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if (gn == mainTarg) {
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fprintf(debug_file, "# *** MAIN TARGET ***\n");
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}
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if (pass >= 2) {
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if (gn->unmade) {
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fprintf(debug_file, "# %d unmade children\n", gn->unmade);
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} else {
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fprintf(debug_file, "# No unmade children\n");
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}
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if (! (gn->type & (OP_JOIN|OP_USE|OP_USEBEFORE|OP_EXEC))) {
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if (gn->mtime != 0) {
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fprintf(debug_file, "# last modified %s: %s\n",
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Targ_FmtTime(gn->mtime),
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made_name(gn->made));
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} else if (gn->made != UNMADE) {
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fprintf(debug_file, "# non-existent (maybe): %s\n",
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made_name(gn->made));
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} else {
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fprintf(debug_file, "# unmade\n");
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}
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}
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if (!Lst_IsEmpty(gn->implicitParents)) {
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fprintf(debug_file, "# implicit parents: ");
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Lst_ForEach(gn->implicitParents, TargPrintName, NULL);
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fprintf(debug_file, "\n");
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}
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} else {
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if (gn->unmade)
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fprintf(debug_file, "# %d unmade children\n", gn->unmade);
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}
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if (!Lst_IsEmpty(gn->parents)) {
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fprintf(debug_file, "# parents: ");
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Lst_ForEach(gn->parents, TargPrintName, NULL);
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fprintf(debug_file, "\n");
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}
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if (!Lst_IsEmpty(gn->order_pred)) {
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fprintf(debug_file, "# order_pred: ");
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Lst_ForEach(gn->order_pred, TargPrintName, NULL);
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fprintf(debug_file, "\n");
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}
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if (!Lst_IsEmpty(gn->order_succ)) {
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fprintf(debug_file, "# order_succ: ");
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Lst_ForEach(gn->order_succ, TargPrintName, NULL);
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fprintf(debug_file, "\n");
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}
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|
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;
|
|
}
|
|
|
|
/* Print only those targets that are just a source.
|
|
* The name of each file is printed, preceded by #\t. */
|
|
static int
|
|
TargPrintOnlySrc(void *gnp, void *dummy MAKE_ATTR_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;
|
|
}
|
|
|
|
/* Input:
|
|
* pass 1 => before processing
|
|
* 2 => after processing
|
|
* 3 => after processing, an error occurred
|
|
*/
|
|
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();
|
|
}
|
|
|
|
/* Propagate some type information to cohort nodes (those from the ::
|
|
* dependency operator).
|
|
*
|
|
* Should be called after the makefiles are parsed but before any action is
|
|
* taken. */
|
|
void
|
|
Targ_Propagate(void)
|
|
{
|
|
LstNode pn, cn;
|
|
|
|
for (pn = Lst_First(allTargets); pn != NULL; pn = LstNode_Next(pn)) {
|
|
GNode *pgn = LstNode_Datum(pn);
|
|
|
|
if (!(pgn->type & OP_DOUBLEDEP))
|
|
continue;
|
|
|
|
for (cn = Lst_First(pgn->cohorts); cn != NULL; cn = LstNode_Next(cn)) {
|
|
GNode *cgn = LstNode_Datum(cn);
|
|
|
|
cgn->type |= pgn->type & ~OP_OPMASK;
|
|
}
|
|
}
|
|
}
|