dep.h

   1 /* Definitions of dependency data structures for GNU Make.
   2 Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
   3 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
   4 2010 Free Software Foundation, Inc.
   5 This file is part of GNU Make.
   6
   7 GNU Make is free software; you can redistribute it and/or modify it under the
   8 terms of the GNU General Public License as published by the Free Software
   9 Foundation; either version 3 of the License, or (at your option) any later
  10 version.
  11
  12 GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  14 A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License along with
  17 this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 /* Flag bits for the second argument to `read_makefile'.
  20    These flags are saved in the `changed' field of each
  21    `struct dep' in the chain returned by `read_all_makefiles'.  */
  22
  23 #define RM_NO_DEFAULT_GOAL      (1 << 0) /* Do not set default goal.  */
  24 #define RM_INCLUDED             (1 << 1) /* Search makefile search path.  */
  25 #define RM_DONTCARE             (1 << 2) /* No error if it doesn't exist.  */
  26 #define RM_NO_TILDE             (1 << 3) /* Don't expand ~ in file name.  */
  27 #define RM_NOFLAG               0
  28
  29 /* Structure representing one dependency of a file.
  30    Each struct file's `deps' points to a chain of these,
  31    chained through the `next'. `stem' is the stem for this
  32    dep line of static pattern rule or NULL.
  33
  34    Note that the first two words of this match a struct nameseq.  */
  35
  36 struct dep
  37   {
  38     struct dep *next;
  39     const char *name;
  40     const char *stem;
  41     struct file *file;
  42     unsigned int changed : 8;
  43     unsigned int ignore_mtime : 1;
  44     unsigned int staticpattern : 1;
  45     unsigned int need_2nd_expansion : 1;
  46     unsigned int dontcare : 1;
  47   };
  48
  49
  50 /* Structure used in chains of names, for parsing and globbing.  */
  51
  52 struct nameseq
  53   {
  54     struct nameseq *next;
  55     const char *name;
  56   };
  57
  58
  59 #define PARSEFS_NONE    (0x0000)
  60 #define PARSEFS_NOSTRIP (0x0001)
  61 #define PARSEFS_NOAR    (0x0002)
  62 #define PARSEFS_NOGLOB  (0x0004)
  63 #define PARSEFS_EXISTS  (0x0008)
  64 #define PARSEFS_NOCACHE (0x0010)
  65
  66 #define PARSE_FILE_SEQ(_s,_t,_c,_p,_f) \
  67             (_t *)parse_file_seq ((_s),sizeof (_t),(_c),(_p),(_f))
  68
  69 #ifdef VMS
  70 void *parse_file_seq ();
  71 #else
  72 void *parse_file_seq (char **stringp, unsigned int size,
  73                       int stopchar, const char *prefix, int flags);
  74 #endif
  75
  76 char *tilde_expand (const char *name);
  77
  78 #ifndef NO_ARCHIVES
  79 struct nameseq *ar_glob (const char *arname, const char *member_pattern, unsigned int size);
  80 #endif
  81
  82 #define dep_name(d)     ((d)->name == 0 ? (d)->file->name : (d)->name)
  83
  84 #define alloc_dep()     (xcalloc (sizeof (struct dep)))
  85 #define free_ns(_n)     free (_n)
  86 #define free_dep(_d)    free_ns (_d)
  87
  88 struct dep *copy_dep_chain (const struct dep *d);
  89 void free_dep_chain (struct dep *d);
  90 void free_ns_chain (struct nameseq *n);
  91 struct dep *read_all_makefiles (const char **makefiles);
  92 void eval_buffer (char *buffer);
  93 int update_goal_chain (struct dep *goals);