2 * Copyright 1993, 1995 Christopher Seiwald.
3 * This file is part of Jam - see jam.c for Copyright information.
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, version 3 of the License ONLY.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 * rules.h - targets, rules, and related information
20 * This file describes the structures holding the targets, rules, and
21 * related information accumulated by interpreting the statements
24 * The following are defined:
26 * RULE - a generic jam rule, the product of RULE and ACTIONS
27 * ACTIONS - a chain of ACTIONs
28 * ACTION - a RULE instance with targets and sources
29 * SETTINGS - variables to set when executing a TARGET's ACTIONS
30 * TARGETS - a chain of TARGETs
31 * TARGET - a file or "thing" that can be built
40 typedef struct _rule RULE
;
41 typedef struct _target TARGET
;
42 typedef struct _targets TARGETS
;
43 typedef struct _action ACTION
;
44 typedef struct _actions ACTIONS
;
45 typedef struct _settings SETTINGS
;
48 /* RULE - a generic jam rule, the product of RULE and ACTIONS */
50 RULE_UPDATED
= 0x01, /* $(>) is updated sources only */
51 RULE_TOGETHER
= 0x02, /* combine actions on single target */
52 RULE_IGNORE
= 0x04, /* ignore return status of executes */
53 RULE_QUIETLY
= 0x08, /* don't mention it unless verbose */
54 RULE_PIECEMEAL
= 0x10, /* split exec so each $(>) is small */
55 RULE_EXISTING
= 0x20, /* $(>) is pre-exisitng sources only */
56 RULE_MAXLINE
= 0x40 /* cmd specific maxline (last) */
61 PARSE
*procedure
; /* parse tree from RULE */
62 const char *actions
; /* command string from ACTIONS */
63 LIST
*bindlist
; /* variable to bind for actions */
64 LIST
*params
; /* bind args to local vars */
65 int flags
; /* modifiers on ACTIONS (RULE_XXX) */
68 /* ACTIONS - a chain of ACTIONs */
71 ACTIONS
*tail
; /* valid only for head */
75 /* ACTION - a RULE instance with targets and sources */
79 TARGETS
*sources
; /* aka $(>) */
80 char running
; /* has been started */
81 char status
; /* see TARGET status */
84 /* SETTINGS - variables to set when executing a TARGET's ACTIONS */
87 const char *symbol
; /* symbol name for var_set() */
88 LIST
*value
; /* symbol value for var_set() */
91 /* TARGETS - a chain of TARGETs */
94 TARGETS
*tail
; /* valid only for head */
98 /* TARGET - a file or "thing" that can be built */
100 T_FLAG_TEMP
= 0x01, /* TEMPORARY applied */
101 T_FLAG_NOCARE
= 0x02, /* NOCARE applied */
102 T_FLAG_NOTFILE
= 0x04, /* NOTFILE applied */
103 T_FLAG_TOUCHED
= 0x08, /* ALWAYS applied or -t target */
104 T_FLAG_LEAVES
= 0x10, /* LEAVES applied */
105 T_FLAG_NOUPDATE
= 0x20, /* NOUPDATE applied */
106 T_FLAG_INTERNAL
= 0x40, /* internal INCLUDES node */
108 T_FLAG_FORCECARE
= 0x100
112 T_BIND_UNBOUND
, /* a disembodied name */
113 T_BIND_MISSING
, /* couldn't find real file */
114 T_BIND_PARENTS
, /* using parent's timestamp */
115 T_BIND_EXISTS
/* real file, timestamp valid */
119 T_FATE_INIT
, /* nothing done to target */
120 T_FATE_MAKING
, /* make0(target) on stack */
122 T_FATE_STABLE
, /* target didn't need updating */
123 T_FATE_NEWER
, /* target newer than parent */
125 T_FATE_SPOIL
, /* >= SPOIL rebuilds parents */
126 T_FATE_ISTMP
=T_FATE_SPOIL
, /* unneeded temp target oddly present */
128 T_FATE_BUILD
, /* >= BUILD rebuilds target */
129 T_FATE_TOUCHED
= T_FATE_BUILD
, /* manually touched with -t */
130 T_FATE_MISSING
, /* is missing, needs updating */
131 T_FATE_NEEDTMP
, /* missing temp that must be rebuild */
132 T_FATE_OUTDATED
, /* is out of date, needs updating */
133 T_FATE_UPDATE
, /* deps updated, needs updating */
135 T_FATE_BROKEN
, /* >= BROKEN ruins parents */
136 T_FATE_CANTFIND
= T_FATE_BROKEN
, /* no rules to make missing target */
137 T_FATE_CANTMAKE
/* can't find dependents */
141 T_MAKE_INIT
, /* make1(target) not yet called */
142 T_MAKE_ONSTACK
, /* make1(target) on stack */
143 T_MAKE_ACTIVE
, /* make1(target) in make1b() */
144 T_MAKE_RUNNING
, /* make1(target) running commands */
145 T_MAKE_DONE
/* make1(target) done */
146 #ifdef JAM_OPT_SEMAPHORE
147 ,T_MAKE_SEMAPHORE
/* special target type for semaphores */
153 const char *boundname
; /* if search() relocates target */
154 ACTIONS
*actions
; /* rules to execute, if any */
155 SETTINGS
*settings
; /* variables to define */
157 char flags
; /* status info (T_FLAG_XXX) */
159 char binding
; /* how target relates to real file (T_BIND_XXX) */
161 TARGETS
*depends
; /* dependencies */
162 TARGET
*includes
; /* includes */
164 time_t time
; /* update time */
165 time_t leaf
; /* update time of leaf sources */
166 char fate
; /* make0()'s diagnosis (T_FATE_XXX) */
168 char progress
; /* tracks make1() progress (T_MAKE_XXX)*/
170 #ifdef JAM_OPT_SEMAPHORE
171 TARGET
*semaphore
; /* used in serialization */
174 char status
; /* execcmd() result */
176 int asynccnt
; /* child deps outstanding */
177 TARGETS
*parents
; /* used by make1() for completion */
178 char *cmds
; /* type-punned command list */
182 extern int haverule (const char *rulename
);
183 extern RULE
*findrule (const char *rulename
); /* can return NULL */
184 extern RULE
*bindrule (const char *rulename
);
185 extern TARGET
*bindtarget (const char *targetname
);
186 extern TARGET
*copytarget (const TARGET
*t
);
187 extern void touchtarget (const char *t
);
188 extern TARGETS
*targetlist (TARGETS
*chain
, LIST
*targets
);
189 extern TARGETS
*targetentry (TARGETS
*chain
, TARGET
*target
);
190 extern TARGETS
*targetchain (TARGETS
*chain
, TARGETS
*targets
);
191 extern ACTIONS
*actionlist (ACTIONS
*chain
, ACTION
*action
);
192 extern SETTINGS
*addsettings (SETTINGS
*v
, int setflag
, const char *sym
, LIST
*val
);
193 extern SETTINGS
*copysettings (SETTINGS
*v
);
194 extern void pushsettings (SETTINGS
*v
);
195 extern void popsettings (SETTINGS
*v
);
196 extern void freesettings (SETTINGS
*v
);
197 extern void donerules (void);
199 extern int iteraterules (hash_iterator_cb itercb
, void *udata
);