1  /* Definitions for using pattern rules in 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 for pattern (implicit) rules.  */
      19  
      20  struct rule
      21    {
      22      struct rule *next;
      23      const char **targets;       /* Targets of the rule.  */
      24      unsigned int *lens;         /* Lengths of each target.  */
      25      const char **suffixes;      /* Suffixes (after '%') of each target.  */
      26      struct dep *deps;           /* Dependencies of the rule.  */
      27      struct commands *cmds;      /* Commands to execute.  */
      28      char *_defn;                /* Definition of the rule. */
      29      unsigned short num;         /* Number of targets.  */
      30      char terminal;              /* If terminal (double-colon).  */
      31      char in_use;                /* If in use by a parent pattern_search.  */
      32    };
      33  
      34  /* For calling install_pattern_rule.  */
      35  struct pspec
      36    {
      37      const char *target, *dep, *commands;
      38    };
      39  
      40  
      41  extern struct rule *pattern_rules;
      42  extern struct rule *last_pattern_rule;
      43  extern unsigned int num_pattern_rules;
      44  
      45  extern unsigned int max_pattern_deps;
      46  extern unsigned int max_pattern_targets;
      47  extern size_t max_pattern_dep_length;
      48  
      49  extern struct file *suffix_file;
      50  
      51  
      52  void snap_implicit_rules (void);
      53  void convert_to_pattern (void);
      54  void install_pattern_rule (struct pspec *p, int terminal);
      55  void create_pattern_rule (const char **targets, const char **target_percents,
      56                            unsigned short num, int terminal, struct dep *deps,
      57                            struct commands *commands, int override);
      58  const char *get_rule_defn (struct rule *rule);
      59  void print_rule_data_base (void);