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- /* Copyright (C) 1988, 1989, 1990 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 1, 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. */
-
- /*
- * MS-DOS port (c) 1990 by Thorsten Ohl <ohl@gnu.ai.mit.edu>
- *
- * To this port, the same copying conditions apply as to the
- * original release.
- *
- * IMPORTANT:
- * This file is not identical to the original GNU release!
- * You should have received this code as patch to the official
- * GNU release.
- *
- * MORE IMPORTANT:
- * This port comes with ABSOLUTELY NO WARRANTY.
- *
- * $Header: e:/gnu/make/RCS/variable.h'v 3.58.0.2 90/07/17 03:32:57 tho Exp $
- */
-
- /* Codes in a variable definition saying where the definition came from.
- Increasing numeric values signify less-overridable definitions. */
- enum variable_origin
- {
- o_default, /* Variable from the default set. */
- o_env, /* Variable from environment. */
- o_file, /* Variable given in a makefile. */
- o_env_override, /* Variable from environment, if -e. */
- o_command, /* Variable given by user. */
- o_override, /* Variable from an `override' directive. */
- o_automatic, /* Automatic variable -- cannot be set. */
- o_invalid /* Core dump time. */
- };
-
- /* Structure that represents one variable definition.
- Each bucket of the hash table is a chain of these,
- chained through `next'. */
-
- struct variable
- {
- struct variable *next; /* Link in the chain. */
- char *name; /* Variable name. */
- char *value; /* Variable value. */
- enum variable_origin
- origin ENUM_BITFIELD (3); /* Variable origin. */
- unsigned int recursive:1; /* Gets recursively re-evaluated. */
- unsigned int expanding:1; /* Is currently expanding. */
- };
-
- /* Structure that represents a variable set. */
-
- struct variable_set
- {
- struct variable **table; /* Hash table of variables. */
- unsigned int buckets; /* Number of hash buckets in `table'. */
- };
-
- /* Structure that represents a list of variable sets. */
-
- struct variable_set_list
- {
- struct variable_set_list *next; /* Link in the chain. */
- struct variable_set *set; /* Variable set. */
- };
-
- extern struct variable_set_list *current_variable_set_list;
-
-
- /* variable.c */
- extern void print_variable_data_base (void);
-
- #ifdef MSDOS
- extern char *variable_buffer_output (char *ptr, char *string,
- unsigned int length);
- extern char *initialize_variable_output (void);
- extern char *save_variable_output (void);
- extern void restore_variable_output (char *save);
- #else /* not MSDOS */
- extern char *variable_buffer_output ();
- extern char *initialize_variable_output ();
- extern char *save_variable_output ();
- extern void restore_variable_output ();
- #endif /* not MSDOS */
-
- #ifdef MSDOS
- extern void push_new_variable_scope (void);
- extern void pop_variable_scope (void);
- #else /* not MSDOS */
- extern void push_new_variable_scope (), pop_variable_scope ();
- #endif /* not MSDOS */
-
- #ifdef MSDOS
- extern int handle_function (char **op, char **stringp);
- #else /* not MSDOS */
- extern int handle_function ();
- #endif /* not MSDOS */
-
- #ifdef MSDOS
- extern char *allocated_variable_expand (char *line);
- extern char *allocated_var_exp_for_file (char *line, struct file *file);
- extern char *expand_argument (char *str, char *end);
- extern char *variable_expand (char *line);
- extern char *variable_expand_for_file (char *line, struct file *file);
- #else /* not MSDOS */
- extern char *variable_expand (), *allocated_variable_expand ();
- extern char *variable_expand_for_file ();
- extern char *allocated_variable_expand_for_file ();
- extern char *expand_argument ();
- #endif /* not MSDOS */
-
- #ifdef MSDOS
- extern void define_automatic_variables (void);
- extern void initialize_file_variables (struct file *file);
- #else /* not MSDOS */
- extern void define_automatic_variables ();
- extern void initialize_file_variables ();
- #endif /* not MSDOS */
-
- extern void print_file_variables ();
-
- #ifdef MSDOS
- extern void merge_variable_set_lists (struct variable_set_list **setlist0,
- struct variable_set_list *setlist1);
- #else /* not MSDOS */
- extern void merge_variable_set_lists ();
- #endif /* not MSDOS */
-
-
- #ifdef MSDOS
- extern int try_variable_definition (char *line, enum variable_origin origin);
- #else /* not MSDOS */
- extern int try_variable_definition ();
- #endif /* not MSDOS */
-
- #ifdef MSDOS
- extern struct variable *define_variable (char *name, unsigned int length,
- char *value, enum variable_origin origin, int recursive);
- extern struct variable *define_variable_for_file (char *name,
- unsigned int length, char *value,
- enum variable_origin origin, int recursive, struct file *file);
- extern struct variable *lookup_variable (char *name, unsigned int length);
- #else /* not MSDOS */
- extern struct variable *lookup_variable (), *define_variable ();
- extern struct variable *define_variable_for_file ();
- #endif /* not MSDOS */
-
- #ifdef MSDOS
- extern int pattern_matches (char *pattern, char *percent, char *word);
- extern char *patsubst_expand (char *o, char *text, char *pattern,
- char *replace, char *pattern_percent, char *replace_percent);
- extern char *subst_expand (char *o, char *text, char *subst, char *replace,
- unsigned int slen, unsigned int rlen, int by_word,
- int suffix_only);
- #else /* not MSDOS */
- extern int pattern_matches ();
- extern char *subst_expand (), *patsubst_expand ();
- #endif /* not MSDOS */
-
- #ifdef MSDOS
- extern char **target_environment (struct file *file);
- #else /* not MSDOS */
- extern char **target_environment ();
- #endif /* not MSDOS */
-