| /* 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 */ |
| 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. */ |
| 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 time_t f_mtime (); |
| #define file_mtime_1(f, v) \ |
| ((f)->last_mtime != (time_t) 0 ? (f)->last_mtime : f_mtime ((f), v)) |
| #define file_mtime(f) file_mtime_1 ((f), 1) |
| #define file_mtime_no_search(f) file_mtime_1 ((f), 0) |
| |
| /* 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. */ |