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