1 /* Definitions of dependency data structures for GNU Make.
2 Copyright (C) 1988-2022 Free Software Foundation, Inc.
3 This file is part of GNU Make.
4
5 GNU Make is free software; you can redistribute it and/or modify it under the
6 terms of the GNU General Public License as published by the Free Software
7 Foundation; either version 3 of the License, or (at your option) any later
8 version.
9
10 GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
11 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12 A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License along with
15 this program. If not, see <https://www.gnu.org/licenses/>. */
16
17
18 /* Structure used in chains of names, for parsing and globbing. */
19
20 #define NAMESEQ(_t) \
21 _t *next; \
22 const char *name
23
24 struct nameseq
25 {
26 NAMESEQ (struct nameseq);
27 };
28
29 /* Flag bits for the second argument to 'read_makefile'.
30 These flags are saved in the 'flags' field of each
31 'struct goaldep' in the chain returned by 'read_all_makefiles'. */
32
33 #define RM_NOFLAG 0
34 #define RM_NO_DEFAULT_GOAL (1 << 0) /* Do not set default goal. */
35 #define RM_INCLUDED (1 << 1) /* Search makefile search path. */
36 #define RM_DONTCARE (1 << 2) /* No error if it doesn't exist. */
37 #define RM_NO_TILDE (1 << 3) /* Don't expand ~ in file name. */
38
39 /* Structure representing one dependency of a file.
40 Each struct file's 'deps' points to a chain of these, through 'next'.
41 'stem' is the stem for this dep line of static pattern rule or NULL.
42 explicit is set when implicit rule search is performed and the prerequisite
43 does not contain %. When explicit is set the file is not intermediate. */
44
45
46 #define DEP(_t) \
47 NAMESEQ (_t); \
48 struct file *file; \
49 _t *shuf; \
50 const char *stem; \
51 unsigned int flags : 8; \
52 unsigned int changed : 1; \
53 unsigned int ignore_mtime : 1; \
54 unsigned int staticpattern : 1; \
55 unsigned int need_2nd_expansion : 1; \
56 unsigned int ignore_automatic_vars : 1; \
57 unsigned int is_explicit : 1; \
58 unsigned int wait_here : 1
59
60 struct dep
61 {
62 DEP (struct dep);
63 };
64
65 /* Structure representing one goal.
66 The goals to be built constitute a chain of these, chained through 'next'.
67 'stem' is not used, but it's simpler to include and ignore it. */
68
69 struct goaldep
70 {
71 DEP (struct goaldep);
72 int error;
73 floc floc;
74 };
75
76 /* Options for parsing lists of filenames. */
77
78 #define PARSEFS_NONE 0x0000
79 #define PARSEFS_NOSTRIP 0x0001
80 #define PARSEFS_NOAR 0x0002
81 #define PARSEFS_NOGLOB 0x0004
82 #define PARSEFS_EXISTS 0x0008
83 #define PARSEFS_NOCACHE 0x0010
84 #define PARSEFS_ONEWORD 0x0020
85 #define PARSEFS_WAIT 0x0040
86
87 #define PARSE_FILE_SEQ(_s,_t,_c,_p,_f) \
88 (_t *)parse_file_seq ((_s),sizeof (_t),(_c),(_p),(_f))
89 #define PARSE_SIMPLE_SEQ(_s,_t) \
90 (_t *)parse_file_seq ((_s),sizeof (_t),MAP_NUL,NULL,PARSEFS_NONE)
91
92 #ifdef VMS
93 void *parse_file_seq ();
94 #else
95 void *parse_file_seq (char **stringp, size_t size,
96 int stopmap, const char *prefix, int flags);
97 #endif
98
99 char *tilde_expand (const char *name);
100
101 #ifndef NO_ARCHIVES
102 struct nameseq *ar_glob (const char *arname, const char *member_pattern, size_t size);
103 #endif
104
105 #define dep_name(d) ((d)->name ? (d)->name : (d)->file->name)
106
107 #define alloc_seq_elt(_t) xcalloc (sizeof (_t))
108 void free_ns_chain (struct nameseq *n);
109
110 #if defined(MAKE_MAINTAINER_MODE) && defined(__GNUC__) && !defined(__STRICT_ANSI__)
111 /* Use inline to get real type-checking. */
112 #define SI static inline
113 SI struct nameseq *alloc_ns (void) { return alloc_seq_elt (struct nameseq); }
114 SI struct dep *alloc_dep (void) { return alloc_seq_elt (struct dep); }
115 SI struct goaldep *alloc_goaldep (void) { return alloc_seq_elt (struct goaldep); }
116
117 SI void free_ns (struct nameseq *n) { free (n); }
118 SI void free_dep (struct dep *d) { free_ns ((struct nameseq *)d); }
119 SI void free_goaldep (struct goaldep *g) { free_dep ((struct dep *)g); }
120 SI void free_dep_chain (struct dep *d) { free_ns_chain((struct nameseq *)d); }
121 SI void free_goal_chain (struct goaldep *g) { free_dep_chain((struct dep *)g); }
122 #else
123 # define alloc_ns() alloc_seq_elt (struct nameseq)
124 # define alloc_dep() alloc_seq_elt (struct dep)
125 # define alloc_goaldep() alloc_seq_elt (struct goaldep)
126
127 # define free_ns(_n) free (_n)
128 # define free_dep(_d) free_ns (_d)
129 # define free_goaldep(_g) free_dep (_g)
130
131 # define free_dep_chain(_d) free_ns_chain ((struct nameseq *)(_d))
132 # define free_goal_chain(_g) free_ns_chain ((struct nameseq *)(_g))
133 #endif
134
135 struct dep *copy_dep_chain (const struct dep *d);
136
137 struct goaldep *read_all_makefiles (const char **makefiles);
138 void eval_buffer (char *buffer, const floc *floc);
139 enum update_status update_goal_chain (struct goaldep *goals);