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-/* Definition of target file data structures for GNU Make.
-Copyright (C) 1988, 89, 90, 91, 92, 93, 94 Free Software Foundation, Inc.
-This file is part of GNU Make.
-
-GNU Make is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Make is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Make; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-/* Structure that represents the info on one file
- that the makefile says how to make.
- All of these are chained together through `next'. */
-
-struct file
- {
- struct file *next;
- char *name;
- struct dep *deps;
- struct commands *cmds; /* Commands to execute for this target. */
- int command_flags; /* Flags OR'd in for cmds; see commands.h. */
- char *stem; /* Implicit stem, if an implicit
- rule has been used */
- struct dep *also_make; /* Targets that are made by making this. */
- time_t last_mtime; /* File's modtime, if already known. */
- struct file *prev; /* Previous entry for same file name;
- used when there are multiple double-colon
- entries for the same file. */
-
- /* File that this file was renamed to. After any time that a
- file could be renamed, call `check_renamed' (below). */
- struct file *renamed;
-
- /* List of variable sets used for this file. */
- struct variable_set_list *variables;
-
- /* Immediate dependent that caused this target to be remade,
- or nil if there isn't one. */
- struct file *parent;
-
- /* For a double-colon entry, this is the first double-colon entry for
- the same file. Otherwise this is null. */
- struct file *double_colon;
-
- short int update_status; /* Status of the last attempt to update,
- or -1 if none has been made. */
-
- enum /* State of the commands. */
- { /* Note: It is important that cs_not_started be zero. */
- cs_not_started, /* Not yet started. */
- cs_deps_running, /* Dep commands running. */
- cs_running, /* Commands running. */
- cs_finished /* Commands finished. */
- } command_state ENUM_BITFIELD (2);
-
- unsigned int precious:1; /* Non-0 means don't delete file on quit */
- unsigned int tried_implicit:1; /* Nonzero if have searched
- for implicit rule for making
- this file; don't search again. */
- unsigned int updating:1; /* Nonzero while updating deps of this file */
- unsigned int updated:1; /* Nonzero if this file has been remade. */
- unsigned int is_target:1; /* Nonzero if file is described as target. */
- unsigned int cmd_target:1; /* Nonzero if file was given on cmd line. */
- unsigned int phony:1; /* Nonzero if this is a phony file
- i.e., a dependency of .PHONY. */
- unsigned int intermediate:1;/* Nonzero if this is an intermediate file. */
- /* Nonzero, for an intermediate file,
- means remove_intermediates should not delete it. */
- unsigned int secondary:1;
- unsigned int dontcare:1; /* Nonzero if no complaint is to be made if
- this target cannot be remade. */
- };
-
-/* Number of intermediate files entered. */
-
-extern unsigned int num_intermediates;
-
-extern struct file *default_goal_file, *suffix_file, *default_file;
-
-
-extern struct file *lookup_file (), *enter_file ();
-extern void remove_intermediates (), snap_deps ();
-extern void rename_file (), file_hash_enter ();
-extern void set_command_state ();
-
-
-/* Return the mtime of file F (a struct file *), caching it.
- The value is -1 if the file does not exist. */
-#define file_mtime(f) file_mtime_1 ((f), 1)
-/* Return the mtime of file F (a struct file *), caching it.
- Don't search using vpath for the file--if it doesn't actually exist,
- we don't find it.
- The value is -1 if the file does not exist. */
-#define file_mtime_no_search(f) file_mtime_1 ((f), 0)
-extern time_t f_mtime ();
-#define file_mtime_1(f, v) \
- ((f)->last_mtime != (time_t) 0 ? (f)->last_mtime : f_mtime ((f), v))
-
-/* Modtime value to use for `infinitely new'. We used to get the current time
- from the system and use that whenever we wanted `new'. But that causes
- trouble when the machine running make and the machine holding a file have
- different ideas about what time it is; and can also lose for `force'
- targets, which need to be considered newer than anything that depends on
- them, even if said dependents' modtimes are in the future.
-
- NOTE: This assumes 32-bit `time_t's, but I cannot think of a portable way
- to produce the largest representable integer of a given signed type. */
-#define NEW_MTIME ((time_t) 0x7fffffff)
-
-
-#define check_renamed(file) \
- while ((file)->renamed != 0) (file) = (file)->renamed /* No ; here. */