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/* Definition of target file data structures for GNU Make.
Copyright (C) 1988,89,90,91,92,93,94,97 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;
char *hname; /* Hashed filename */
char *vpath; /* VPATH/vpath pathname */
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. */
unsigned int ignore_vpath:1;/* Nonzero if we threw out VPATH name */
};
/* 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 (), rehash_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.
If time_t is unsigned, its maximum value is the same as "(time_t) -1",
so use one less than that, because -1 is used for non-existing files. */
#define NEW_MTIME \
(INTEGER_TYPE_SIGNED (time_t) \
? INTEGER_TYPE_MAXIMUM (time_t) \
: (INTEGER_TYPE_MAXIMUM (time_t) - 1))
#define check_renamed(file) \
while ((file)->renamed != 0) (file) = (file)->renamed /* No ; here. */
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