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Diffstat (limited to 'filedef.h')
| -rw-r--r-- | filedef.h | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/filedef.h b/filedef.h new file mode 100644 index 0000000..6070ecb --- /dev/null +++ b/filedef.h @@ -0,0 +1,120 @@ +/* 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. */ |