mirror of
https://git.savannah.gnu.org/git/make.git
synced 2024-12-26 22:06:00 +00:00
5b4d419476
Rework the parser for variables to allow multiple modifiers and also allow for variables and targets with modifier names, like "export" and "private".
1594 lines
46 KiB
C
1594 lines
46 KiB
C
/* Internals of variables for GNU Make.
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Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
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1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software
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Foundation, Inc.
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This file is part of GNU Make.
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GNU Make is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3 of the License, or (at your option) any later
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version.
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GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
|
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "make.h"
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#include <assert.h>
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#include "dep.h"
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#include "filedef.h"
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#include "job.h"
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#include "commands.h"
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#include "variable.h"
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#include "rule.h"
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#ifdef WINDOWS32
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#include "pathstuff.h"
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#endif
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#include "hash.h"
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/* Chain of all pattern-specific variables. */
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static struct pattern_var *pattern_vars;
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/* Pointer to last struct in the chain, so we can add onto the end. */
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static struct pattern_var *last_pattern_var;
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/* Create a new pattern-specific variable struct. */
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struct pattern_var *
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create_pattern_var (const char *target, const char *suffix)
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{
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register struct pattern_var *p = xmalloc (sizeof (struct pattern_var));
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if (last_pattern_var != 0)
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last_pattern_var->next = p;
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else
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pattern_vars = p;
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last_pattern_var = p;
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p->next = 0;
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p->target = target;
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p->len = strlen (target);
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p->suffix = suffix + 1;
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return p;
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}
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/* Look up a target in the pattern-specific variable list. */
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static struct pattern_var *
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lookup_pattern_var (struct pattern_var *start, const char *target)
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{
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struct pattern_var *p;
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unsigned int targlen = strlen(target);
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for (p = start ? start->next : pattern_vars; p != 0; p = p->next)
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{
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const char *stem;
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unsigned int stemlen;
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if (p->len > targlen)
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/* It can't possibly match. */
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continue;
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/* From the lengths of the filename and the pattern parts,
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find the stem: the part of the filename that matches the %. */
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stem = target + (p->suffix - p->target - 1);
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stemlen = targlen - p->len + 1;
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/* Compare the text in the pattern before the stem, if any. */
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if (stem > target && !strneq (p->target, target, stem - target))
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continue;
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/* Compare the text in the pattern after the stem, if any.
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We could test simply using streq, but this way we compare the
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first two characters immediately. This saves time in the very
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common case where the first character matches because it is a
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period. */
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if (*p->suffix == stem[stemlen]
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&& (*p->suffix == '\0' || streq (&p->suffix[1], &stem[stemlen+1])))
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break;
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}
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return p;
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}
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/* Hash table of all global variable definitions. */
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static unsigned long
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variable_hash_1 (const void *keyv)
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{
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struct variable const *key = (struct variable const *) keyv;
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return_STRING_N_HASH_1 (key->name, key->length);
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}
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static unsigned long
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variable_hash_2 (const void *keyv)
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{
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struct variable const *key = (struct variable const *) keyv;
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return_STRING_N_HASH_2 (key->name, key->length);
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}
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static int
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variable_hash_cmp (const void *xv, const void *yv)
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{
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struct variable const *x = (struct variable const *) xv;
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struct variable const *y = (struct variable const *) yv;
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int result = x->length - y->length;
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if (result)
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return result;
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return_STRING_N_COMPARE (x->name, y->name, x->length);
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}
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#ifndef VARIABLE_BUCKETS
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#define VARIABLE_BUCKETS 523
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#endif
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#ifndef PERFILE_VARIABLE_BUCKETS
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#define PERFILE_VARIABLE_BUCKETS 23
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#endif
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#ifndef SMALL_SCOPE_VARIABLE_BUCKETS
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#define SMALL_SCOPE_VARIABLE_BUCKETS 13
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#endif
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static struct variable_set global_variable_set;
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static struct variable_set_list global_setlist
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= { 0, &global_variable_set, 0 };
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struct variable_set_list *current_variable_set_list = &global_setlist;
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/* Implement variables. */
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void
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init_hash_global_variable_set (void)
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{
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hash_init (&global_variable_set.table, VARIABLE_BUCKETS,
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variable_hash_1, variable_hash_2, variable_hash_cmp);
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}
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/* Define variable named NAME with value VALUE in SET. VALUE is copied.
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LENGTH is the length of NAME, which does not need to be null-terminated.
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ORIGIN specifies the origin of the variable (makefile, command line
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or environment).
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If RECURSIVE is nonzero a flag is set in the variable saying
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that it should be recursively re-expanded. */
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struct variable *
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define_variable_in_set (const char *name, unsigned int length,
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const char *value, enum variable_origin origin,
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int recursive, struct variable_set *set,
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const struct floc *flocp)
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{
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struct variable *v;
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struct variable **var_slot;
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struct variable var_key;
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if (set == NULL)
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set = &global_variable_set;
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var_key.name = (char *) name;
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var_key.length = length;
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var_slot = (struct variable **) hash_find_slot (&set->table, &var_key);
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if (env_overrides && origin == o_env)
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origin = o_env_override;
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v = *var_slot;
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if (! HASH_VACANT (v))
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{
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if (env_overrides && v->origin == o_env)
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/* V came from in the environment. Since it was defined
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before the switches were parsed, it wasn't affected by -e. */
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v->origin = o_env_override;
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/* A variable of this name is already defined.
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If the old definition is from a stronger source
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than this one, don't redefine it. */
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if ((int) origin >= (int) v->origin)
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{
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if (v->value != 0)
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free (v->value);
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v->value = xstrdup (value);
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if (flocp != 0)
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v->fileinfo = *flocp;
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else
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v->fileinfo.filenm = 0;
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v->origin = origin;
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v->recursive = recursive;
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}
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return v;
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}
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/* Create a new variable definition and add it to the hash table. */
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v = xmalloc (sizeof (struct variable));
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v->name = xstrndup (name, length);
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v->length = length;
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hash_insert_at (&set->table, v, var_slot);
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v->value = xstrdup (value);
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if (flocp != 0)
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v->fileinfo = *flocp;
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else
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v->fileinfo.filenm = 0;
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v->origin = origin;
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v->recursive = recursive;
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v->special = 0;
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v->expanding = 0;
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v->exp_count = 0;
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v->per_target = 0;
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v->append = 0;
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v->private_var = 0;
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v->export = v_default;
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v->exportable = 1;
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if (*name != '_' && (*name < 'A' || *name > 'Z')
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&& (*name < 'a' || *name > 'z'))
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v->exportable = 0;
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else
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{
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for (++name; *name != '\0'; ++name)
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if (*name != '_' && (*name < 'a' || *name > 'z')
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&& (*name < 'A' || *name > 'Z') && !ISDIGIT(*name))
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break;
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if (*name != '\0')
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v->exportable = 0;
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}
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return v;
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}
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/* If the variable passed in is "special", handle its special nature.
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Currently there are two such variables, both used for introspection:
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.VARIABLES expands to a list of all the variables defined in this instance
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of make.
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.TARGETS expands to a list of all the targets defined in this
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instance of make.
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Returns the variable reference passed in. */
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#define EXPANSION_INCREMENT(_l) ((((_l) / 500) + 1) * 500)
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static struct variable *
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lookup_special_var (struct variable *var)
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{
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static unsigned long last_var_count = 0;
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/* This one actually turns out to be very hard, due to the way the parser
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records targets. The way it works is that target information is collected
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internally until make knows the target is completely specified. It unitl
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it sees that some new construct (a new target or variable) is defined that
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it knows the previous one is done. In short, this means that if you do
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this:
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all:
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TARGS := $(.TARGETS)
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then $(TARGS) won't contain "all", because it's not until after the
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variable is created that the previous target is completed.
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Changing this would be a major pain. I think a less complex way to do it
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would be to pre-define the target files as soon as the first line is
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parsed, then come back and do the rest of the definition as now. That
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would allow $(.TARGETS) to be correct without a major change to the way
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the parser works.
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if (streq (var->name, ".TARGETS"))
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var->value = build_target_list (var->value);
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else
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*/
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if (streq (var->name, ".VARIABLES")
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&& global_variable_set.table.ht_fill != last_var_count)
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{
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unsigned long max = EXPANSION_INCREMENT (strlen (var->value));
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unsigned long len;
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char *p;
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struct variable **vp = (struct variable **) global_variable_set.table.ht_vec;
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struct variable **end = &vp[global_variable_set.table.ht_size];
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/* Make sure we have at least MAX bytes in the allocated buffer. */
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var->value = xrealloc (var->value, max);
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/* Walk through the hash of variables, constructing a list of names. */
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p = var->value;
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len = 0;
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for (; vp < end; ++vp)
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if (!HASH_VACANT (*vp))
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{
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struct variable *v = *vp;
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int l = v->length;
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len += l + 1;
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if (len > max)
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{
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unsigned long off = p - var->value;
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max += EXPANSION_INCREMENT (l + 1);
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var->value = xrealloc (var->value, max);
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p = &var->value[off];
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}
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memcpy (p, v->name, l);
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p += l;
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*(p++) = ' ';
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}
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*(p-1) = '\0';
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/* Remember how many variables are in our current count. Since we never
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remove variables from the list, this is a reliable way to know whether
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the list is up to date or needs to be recomputed. */
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last_var_count = global_variable_set.table.ht_fill;
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}
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return var;
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}
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/* Lookup a variable whose name is a string starting at NAME
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and with LENGTH chars. NAME need not be null-terminated.
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Returns address of the `struct variable' containing all info
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on the variable, or nil if no such variable is defined. */
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struct variable *
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lookup_variable (const char *name, unsigned int length)
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{
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const struct variable_set_list *setlist;
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struct variable var_key;
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int is_parent = 0;
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var_key.name = (char *) name;
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var_key.length = length;
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for (setlist = current_variable_set_list;
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setlist != 0; setlist = setlist->next)
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{
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const struct variable_set *set = setlist->set;
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struct variable *v;
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v = (struct variable *) hash_find_item ((struct hash_table *) &set->table, &var_key);
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if (v && (!is_parent || !v->private_var))
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return v->special ? lookup_special_var (v) : v;
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is_parent |= setlist->next_is_parent;
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}
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#ifdef VMS
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/* since we don't read envp[] on startup, try to get the
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variable via getenv() here. */
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{
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char *vname = alloca (length + 1);
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char *value;
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strncpy (vname, name, length);
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vname[length] = 0;
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value = getenv (vname);
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if (value != 0)
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{
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char *sptr;
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int scnt;
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sptr = value;
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scnt = 0;
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while ((sptr = strchr (sptr, '$')))
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{
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scnt++;
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sptr++;
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}
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if (scnt > 0)
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{
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char *nvalue;
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char *nptr;
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nvalue = alloca (strlen (value) + scnt + 1);
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sptr = value;
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nptr = nvalue;
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while (*sptr)
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{
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if (*sptr == '$')
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{
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*nptr++ = '$';
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*nptr++ = '$';
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}
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else
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{
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*nptr++ = *sptr;
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}
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sptr++;
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}
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*nptr = '\0';
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return define_variable (vname, length, nvalue, o_env, 1);
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||
}
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return define_variable (vname, length, value, o_env, 1);
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}
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||
}
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#endif /* VMS */
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||
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||
return 0;
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||
}
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||
|
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/* Lookup a variable whose name is a string starting at NAME
|
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and with LENGTH chars in set SET. NAME need not be null-terminated.
|
||
Returns address of the `struct variable' containing all info
|
||
on the variable, or nil if no such variable is defined. */
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||
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||
struct variable *
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||
lookup_variable_in_set (const char *name, unsigned int length,
|
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const struct variable_set *set)
|
||
{
|
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struct variable var_key;
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||
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var_key.name = (char *) name;
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var_key.length = length;
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||
|
||
return (struct variable *) hash_find_item ((struct hash_table *) &set->table, &var_key);
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||
}
|
||
|
||
/* Initialize FILE's variable set list. If FILE already has a variable set
|
||
list, the topmost variable set is left intact, but the the rest of the
|
||
chain is replaced with FILE->parent's setlist. If FILE is a double-colon
|
||
rule, then we will use the "root" double-colon target's variable set as the
|
||
parent of FILE's variable set.
|
||
|
||
If we're READING a makefile, don't do the pattern variable search now,
|
||
since the pattern variable might not have been defined yet. */
|
||
|
||
void
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||
initialize_file_variables (struct file *file, int reading)
|
||
{
|
||
struct variable_set_list *l = file->variables;
|
||
|
||
if (l == 0)
|
||
{
|
||
l = (struct variable_set_list *)
|
||
xmalloc (sizeof (struct variable_set_list));
|
||
l->set = xmalloc (sizeof (struct variable_set));
|
||
hash_init (&l->set->table, PERFILE_VARIABLE_BUCKETS,
|
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variable_hash_1, variable_hash_2, variable_hash_cmp);
|
||
file->variables = l;
|
||
}
|
||
|
||
/* If this is a double-colon, then our "parent" is the "root" target for
|
||
this double-colon rule. Since that rule has the same name, parent,
|
||
etc. we can just use its variables as the "next" for ours. */
|
||
|
||
if (file->double_colon && file->double_colon != file)
|
||
{
|
||
initialize_file_variables (file->double_colon, reading);
|
||
l->next = file->double_colon->variables;
|
||
l->next_is_parent = 0;
|
||
return;
|
||
}
|
||
|
||
if (file->parent == 0)
|
||
l->next = &global_setlist;
|
||
else
|
||
{
|
||
initialize_file_variables (file->parent, reading);
|
||
l->next = file->parent->variables;
|
||
}
|
||
l->next_is_parent = 1;
|
||
|
||
/* If we're not reading makefiles and we haven't looked yet, see if
|
||
we can find pattern variables for this target. */
|
||
|
||
if (!reading && !file->pat_searched)
|
||
{
|
||
struct pattern_var *p;
|
||
|
||
p = lookup_pattern_var (0, file->name);
|
||
if (p != 0)
|
||
{
|
||
struct variable_set_list *global = current_variable_set_list;
|
||
|
||
/* We found at least one. Set up a new variable set to accumulate
|
||
all the pattern variables that match this target. */
|
||
|
||
file->pat_variables = create_new_variable_set ();
|
||
current_variable_set_list = file->pat_variables;
|
||
|
||
do
|
||
{
|
||
/* We found one, so insert it into the set. */
|
||
|
||
struct variable *v;
|
||
|
||
if (p->variable.flavor == f_simple)
|
||
{
|
||
v = define_variable_loc (
|
||
p->variable.name, strlen (p->variable.name),
|
||
p->variable.value, p->variable.origin,
|
||
0, &p->variable.fileinfo);
|
||
|
||
v->flavor = f_simple;
|
||
}
|
||
else
|
||
{
|
||
v = do_variable_definition (
|
||
&p->variable.fileinfo, p->variable.name,
|
||
p->variable.value, p->variable.origin,
|
||
p->variable.flavor, 1);
|
||
}
|
||
|
||
/* Also mark it as a per-target and copy export status. */
|
||
v->per_target = p->variable.per_target;
|
||
v->export = p->variable.export;
|
||
v->private_var = p->variable.private_var;
|
||
}
|
||
while ((p = lookup_pattern_var (p, file->name)) != 0);
|
||
|
||
current_variable_set_list = global;
|
||
}
|
||
file->pat_searched = 1;
|
||
}
|
||
|
||
/* If we have a pattern variable match, set it up. */
|
||
|
||
if (file->pat_variables != 0)
|
||
{
|
||
file->pat_variables->next = l->next;
|
||
file->pat_variables->next_is_parent = l->next_is_parent;
|
||
l->next = file->pat_variables;
|
||
l->next_is_parent = 0;
|
||
}
|
||
}
|
||
|
||
/* Pop the top set off the current variable set list,
|
||
and free all its storage. */
|
||
|
||
struct variable_set_list *
|
||
create_new_variable_set (void)
|
||
{
|
||
register struct variable_set_list *setlist;
|
||
register struct variable_set *set;
|
||
|
||
set = xmalloc (sizeof (struct variable_set));
|
||
hash_init (&set->table, SMALL_SCOPE_VARIABLE_BUCKETS,
|
||
variable_hash_1, variable_hash_2, variable_hash_cmp);
|
||
|
||
setlist = (struct variable_set_list *)
|
||
xmalloc (sizeof (struct variable_set_list));
|
||
setlist->set = set;
|
||
setlist->next = current_variable_set_list;
|
||
setlist->next_is_parent = 0;
|
||
|
||
return setlist;
|
||
}
|
||
|
||
static void
|
||
free_variable_name_and_value (const void *item)
|
||
{
|
||
struct variable *v = (struct variable *) item;
|
||
free (v->name);
|
||
free (v->value);
|
||
}
|
||
|
||
void
|
||
free_variable_set (struct variable_set_list *list)
|
||
{
|
||
hash_map (&list->set->table, free_variable_name_and_value);
|
||
hash_free (&list->set->table, 1);
|
||
free (list->set);
|
||
free (list);
|
||
}
|
||
|
||
/* Create a new variable set and push it on the current setlist.
|
||
If we're pushing a global scope (that is, the current scope is the global
|
||
scope) then we need to "push" it the other way: file variable sets point
|
||
directly to the global_setlist so we need to replace that with the new one.
|
||
*/
|
||
|
||
struct variable_set_list *
|
||
push_new_variable_scope (void)
|
||
{
|
||
current_variable_set_list = create_new_variable_set();
|
||
if (current_variable_set_list->next == &global_setlist)
|
||
{
|
||
/* It was the global, so instead of new -> &global we want to replace
|
||
&global with the new one and have &global -> new, with current still
|
||
pointing to &global */
|
||
struct variable_set *set = current_variable_set_list->set;
|
||
current_variable_set_list->set = global_setlist.set;
|
||
global_setlist.set = set;
|
||
current_variable_set_list->next = global_setlist.next;
|
||
global_setlist.next = current_variable_set_list;
|
||
current_variable_set_list = &global_setlist;
|
||
}
|
||
return (current_variable_set_list);
|
||
}
|
||
|
||
void
|
||
pop_variable_scope (void)
|
||
{
|
||
struct variable_set_list *setlist;
|
||
struct variable_set *set;
|
||
|
||
/* Can't call this if there's no scope to pop! */
|
||
assert(current_variable_set_list->next != NULL);
|
||
|
||
if (current_variable_set_list != &global_setlist)
|
||
{
|
||
/* We're not pointing to the global setlist, so pop this one. */
|
||
setlist = current_variable_set_list;
|
||
set = setlist->set;
|
||
current_variable_set_list = setlist->next;
|
||
}
|
||
else
|
||
{
|
||
/* This set is the one in the global_setlist, but there is another global
|
||
set beyond that. We want to copy that set to global_setlist, then
|
||
delete what used to be in global_setlist. */
|
||
setlist = global_setlist.next;
|
||
set = global_setlist.set;
|
||
global_setlist.set = setlist->set;
|
||
global_setlist.next = setlist->next;
|
||
global_setlist.next_is_parent = setlist->next_is_parent;
|
||
}
|
||
|
||
/* Free the one we no longer need. */
|
||
free (setlist);
|
||
hash_map (&set->table, free_variable_name_and_value);
|
||
hash_free (&set->table, 1);
|
||
free (set);
|
||
}
|
||
|
||
/* Merge FROM_SET into TO_SET, freeing unused storage in FROM_SET. */
|
||
|
||
static void
|
||
merge_variable_sets (struct variable_set *to_set,
|
||
struct variable_set *from_set)
|
||
{
|
||
struct variable **from_var_slot = (struct variable **) from_set->table.ht_vec;
|
||
struct variable **from_var_end = from_var_slot + from_set->table.ht_size;
|
||
|
||
for ( ; from_var_slot < from_var_end; from_var_slot++)
|
||
if (! HASH_VACANT (*from_var_slot))
|
||
{
|
||
struct variable *from_var = *from_var_slot;
|
||
struct variable **to_var_slot
|
||
= (struct variable **) hash_find_slot (&to_set->table, *from_var_slot);
|
||
if (HASH_VACANT (*to_var_slot))
|
||
hash_insert_at (&to_set->table, from_var, to_var_slot);
|
||
else
|
||
{
|
||
/* GKM FIXME: delete in from_set->table */
|
||
free (from_var->value);
|
||
free (from_var);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Merge SETLIST1 into SETLIST0, freeing unused storage in SETLIST1. */
|
||
|
||
void
|
||
merge_variable_set_lists (struct variable_set_list **setlist0,
|
||
struct variable_set_list *setlist1)
|
||
{
|
||
struct variable_set_list *to = *setlist0;
|
||
struct variable_set_list *last0 = 0;
|
||
|
||
/* If there's nothing to merge, stop now. */
|
||
if (!setlist1)
|
||
return;
|
||
|
||
/* This loop relies on the fact that all setlists terminate with the global
|
||
setlist (before NULL). If that's not true, arguably we SHOULD die. */
|
||
if (to)
|
||
while (setlist1 != &global_setlist && to != &global_setlist)
|
||
{
|
||
struct variable_set_list *from = setlist1;
|
||
setlist1 = setlist1->next;
|
||
|
||
merge_variable_sets (to->set, from->set);
|
||
|
||
last0 = to;
|
||
to = to->next;
|
||
}
|
||
|
||
if (setlist1 != &global_setlist)
|
||
{
|
||
if (last0 == 0)
|
||
*setlist0 = setlist1;
|
||
else
|
||
last0->next = setlist1;
|
||
}
|
||
}
|
||
|
||
/* Define the automatic variables, and record the addresses
|
||
of their structures so we can change their values quickly. */
|
||
|
||
void
|
||
define_automatic_variables (void)
|
||
{
|
||
#if defined(WINDOWS32) || defined(__EMX__)
|
||
extern char* default_shell;
|
||
#else
|
||
extern char default_shell[];
|
||
#endif
|
||
register struct variable *v;
|
||
char buf[200];
|
||
|
||
sprintf (buf, "%u", makelevel);
|
||
(void) define_variable (MAKELEVEL_NAME, MAKELEVEL_LENGTH, buf, o_env, 0);
|
||
|
||
sprintf (buf, "%s%s%s",
|
||
version_string,
|
||
(remote_description == 0 || remote_description[0] == '\0')
|
||
? "" : "-",
|
||
(remote_description == 0 || remote_description[0] == '\0')
|
||
? "" : remote_description);
|
||
(void) define_variable ("MAKE_VERSION", 12, buf, o_default, 0);
|
||
|
||
#ifdef __MSDOS__
|
||
/* Allow to specify a special shell just for Make,
|
||
and use $COMSPEC as the default $SHELL when appropriate. */
|
||
{
|
||
static char shell_str[] = "SHELL";
|
||
const int shlen = sizeof (shell_str) - 1;
|
||
struct variable *mshp = lookup_variable ("MAKESHELL", 9);
|
||
struct variable *comp = lookup_variable ("COMSPEC", 7);
|
||
|
||
/* Make $MAKESHELL override $SHELL even if -e is in effect. */
|
||
if (mshp)
|
||
(void) define_variable (shell_str, shlen,
|
||
mshp->value, o_env_override, 0);
|
||
else if (comp)
|
||
{
|
||
/* $COMSPEC shouldn't override $SHELL. */
|
||
struct variable *shp = lookup_variable (shell_str, shlen);
|
||
|
||
if (!shp)
|
||
(void) define_variable (shell_str, shlen, comp->value, o_env, 0);
|
||
}
|
||
}
|
||
#elif defined(__EMX__)
|
||
{
|
||
static char shell_str[] = "SHELL";
|
||
const int shlen = sizeof (shell_str) - 1;
|
||
struct variable *shell = lookup_variable (shell_str, shlen);
|
||
struct variable *replace = lookup_variable ("MAKESHELL", 9);
|
||
|
||
/* if $MAKESHELL is defined in the environment assume o_env_override */
|
||
if (replace && *replace->value && replace->origin == o_env)
|
||
replace->origin = o_env_override;
|
||
|
||
/* if $MAKESHELL is not defined use $SHELL but only if the variable
|
||
did not come from the environment */
|
||
if (!replace || !*replace->value)
|
||
if (shell && *shell->value && (shell->origin == o_env
|
||
|| shell->origin == o_env_override))
|
||
{
|
||
/* overwrite whatever we got from the environment */
|
||
free(shell->value);
|
||
shell->value = xstrdup (default_shell);
|
||
shell->origin = o_default;
|
||
}
|
||
|
||
/* Some people do not like cmd to be used as the default
|
||
if $SHELL is not defined in the Makefile.
|
||
With -DNO_CMD_DEFAULT you can turn off this behaviour */
|
||
# ifndef NO_CMD_DEFAULT
|
||
/* otherwise use $COMSPEC */
|
||
if (!replace || !*replace->value)
|
||
replace = lookup_variable ("COMSPEC", 7);
|
||
|
||
/* otherwise use $OS2_SHELL */
|
||
if (!replace || !*replace->value)
|
||
replace = lookup_variable ("OS2_SHELL", 9);
|
||
# else
|
||
# warning NO_CMD_DEFAULT: GNU make will not use CMD.EXE as default shell
|
||
# endif
|
||
|
||
if (replace && *replace->value)
|
||
/* overwrite $SHELL */
|
||
(void) define_variable (shell_str, shlen, replace->value,
|
||
replace->origin, 0);
|
||
else
|
||
/* provide a definition if there is none */
|
||
(void) define_variable (shell_str, shlen, default_shell,
|
||
o_default, 0);
|
||
}
|
||
|
||
#endif
|
||
|
||
/* This won't override any definition, but it will provide one if there
|
||
isn't one there. */
|
||
v = define_variable ("SHELL", 5, default_shell, o_default, 0);
|
||
#ifdef __MSDOS__
|
||
v->export = v_export; /* Export always SHELL. */
|
||
#endif
|
||
|
||
/* On MSDOS we do use SHELL from environment, since it isn't a standard
|
||
environment variable on MSDOS, so whoever sets it, does that on purpose.
|
||
On OS/2 we do not use SHELL from environment but we have already handled
|
||
that problem above. */
|
||
#if !defined(__MSDOS__) && !defined(__EMX__)
|
||
/* Don't let SHELL come from the environment. */
|
||
if (*v->value == '\0' || v->origin == o_env || v->origin == o_env_override)
|
||
{
|
||
free (v->value);
|
||
v->origin = o_file;
|
||
v->value = xstrdup (default_shell);
|
||
}
|
||
#endif
|
||
|
||
/* Make sure MAKEFILES gets exported if it is set. */
|
||
v = define_variable ("MAKEFILES", 9, "", o_default, 0);
|
||
v->export = v_ifset;
|
||
|
||
/* Define the magic D and F variables in terms of
|
||
the automatic variables they are variations of. */
|
||
|
||
#ifdef VMS
|
||
define_variable ("@D", 2, "$(dir $@)", o_automatic, 1);
|
||
define_variable ("%D", 2, "$(dir $%)", o_automatic, 1);
|
||
define_variable ("*D", 2, "$(dir $*)", o_automatic, 1);
|
||
define_variable ("<D", 2, "$(dir $<)", o_automatic, 1);
|
||
define_variable ("?D", 2, "$(dir $?)", o_automatic, 1);
|
||
define_variable ("^D", 2, "$(dir $^)", o_automatic, 1);
|
||
define_variable ("+D", 2, "$(dir $+)", o_automatic, 1);
|
||
#else
|
||
define_variable ("@D", 2, "$(patsubst %/,%,$(dir $@))", o_automatic, 1);
|
||
define_variable ("%D", 2, "$(patsubst %/,%,$(dir $%))", o_automatic, 1);
|
||
define_variable ("*D", 2, "$(patsubst %/,%,$(dir $*))", o_automatic, 1);
|
||
define_variable ("<D", 2, "$(patsubst %/,%,$(dir $<))", o_automatic, 1);
|
||
define_variable ("?D", 2, "$(patsubst %/,%,$(dir $?))", o_automatic, 1);
|
||
define_variable ("^D", 2, "$(patsubst %/,%,$(dir $^))", o_automatic, 1);
|
||
define_variable ("+D", 2, "$(patsubst %/,%,$(dir $+))", o_automatic, 1);
|
||
#endif
|
||
define_variable ("@F", 2, "$(notdir $@)", o_automatic, 1);
|
||
define_variable ("%F", 2, "$(notdir $%)", o_automatic, 1);
|
||
define_variable ("*F", 2, "$(notdir $*)", o_automatic, 1);
|
||
define_variable ("<F", 2, "$(notdir $<)", o_automatic, 1);
|
||
define_variable ("?F", 2, "$(notdir $?)", o_automatic, 1);
|
||
define_variable ("^F", 2, "$(notdir $^)", o_automatic, 1);
|
||
define_variable ("+F", 2, "$(notdir $+)", o_automatic, 1);
|
||
}
|
||
|
||
int export_all_variables;
|
||
|
||
/* Create a new environment for FILE's commands.
|
||
If FILE is nil, this is for the `shell' function.
|
||
The child's MAKELEVEL variable is incremented. */
|
||
|
||
char **
|
||
target_environment (struct file *file)
|
||
{
|
||
struct variable_set_list *set_list;
|
||
register struct variable_set_list *s;
|
||
struct hash_table table;
|
||
struct variable **v_slot;
|
||
struct variable **v_end;
|
||
struct variable makelevel_key;
|
||
char **result_0;
|
||
char **result;
|
||
|
||
if (file == 0)
|
||
set_list = current_variable_set_list;
|
||
else
|
||
set_list = file->variables;
|
||
|
||
hash_init (&table, VARIABLE_BUCKETS,
|
||
variable_hash_1, variable_hash_2, variable_hash_cmp);
|
||
|
||
/* Run through all the variable sets in the list,
|
||
accumulating variables in TABLE. */
|
||
for (s = set_list; s != 0; s = s->next)
|
||
{
|
||
struct variable_set *set = s->set;
|
||
v_slot = (struct variable **) set->table.ht_vec;
|
||
v_end = v_slot + set->table.ht_size;
|
||
for ( ; v_slot < v_end; v_slot++)
|
||
if (! HASH_VACANT (*v_slot))
|
||
{
|
||
struct variable **new_slot;
|
||
struct variable *v = *v_slot;
|
||
|
||
/* If this is a per-target variable and it hasn't been touched
|
||
already then look up the global version and take its export
|
||
value. */
|
||
if (v->per_target && v->export == v_default)
|
||
{
|
||
struct variable *gv;
|
||
|
||
gv = lookup_variable_in_set (v->name, strlen(v->name),
|
||
&global_variable_set);
|
||
if (gv)
|
||
v->export = gv->export;
|
||
}
|
||
|
||
switch (v->export)
|
||
{
|
||
case v_default:
|
||
if (v->origin == o_default || v->origin == o_automatic)
|
||
/* Only export default variables by explicit request. */
|
||
continue;
|
||
|
||
/* The variable doesn't have a name that can be exported. */
|
||
if (! v->exportable)
|
||
continue;
|
||
|
||
if (! export_all_variables
|
||
&& v->origin != o_command
|
||
&& v->origin != o_env && v->origin != o_env_override)
|
||
continue;
|
||
break;
|
||
|
||
case v_export:
|
||
break;
|
||
|
||
case v_noexport:
|
||
{
|
||
/* If this is the SHELL variable and it's not exported,
|
||
then add the value from our original environment, if
|
||
the original environment defined a value for SHELL. */
|
||
extern struct variable shell_var;
|
||
if (streq (v->name, "SHELL") && shell_var.value)
|
||
{
|
||
v = &shell_var;
|
||
break;
|
||
}
|
||
continue;
|
||
}
|
||
|
||
case v_ifset:
|
||
if (v->origin == o_default)
|
||
continue;
|
||
break;
|
||
}
|
||
|
||
new_slot = (struct variable **) hash_find_slot (&table, v);
|
||
if (HASH_VACANT (*new_slot))
|
||
hash_insert_at (&table, v, new_slot);
|
||
}
|
||
}
|
||
|
||
makelevel_key.name = MAKELEVEL_NAME;
|
||
makelevel_key.length = MAKELEVEL_LENGTH;
|
||
hash_delete (&table, &makelevel_key);
|
||
|
||
result = result_0 = xmalloc ((table.ht_fill + 2) * sizeof (char *));
|
||
|
||
v_slot = (struct variable **) table.ht_vec;
|
||
v_end = v_slot + table.ht_size;
|
||
for ( ; v_slot < v_end; v_slot++)
|
||
if (! HASH_VACANT (*v_slot))
|
||
{
|
||
struct variable *v = *v_slot;
|
||
|
||
/* If V is recursively expanded and didn't come from the environment,
|
||
expand its value. If it came from the environment, it should
|
||
go back into the environment unchanged. */
|
||
if (v->recursive
|
||
&& v->origin != o_env && v->origin != o_env_override)
|
||
{
|
||
char *value = recursively_expand_for_file (v, file);
|
||
#ifdef WINDOWS32
|
||
if (strcmp(v->name, "Path") == 0 ||
|
||
strcmp(v->name, "PATH") == 0)
|
||
convert_Path_to_windows32(value, ';');
|
||
#endif
|
||
*result++ = xstrdup (concat (v->name, "=", value));
|
||
free (value);
|
||
}
|
||
else
|
||
{
|
||
#ifdef WINDOWS32
|
||
if (strcmp(v->name, "Path") == 0 ||
|
||
strcmp(v->name, "PATH") == 0)
|
||
convert_Path_to_windows32(v->value, ';');
|
||
#endif
|
||
*result++ = xstrdup (concat (v->name, "=", v->value));
|
||
}
|
||
}
|
||
|
||
*result = xmalloc (100);
|
||
sprintf (*result, "%s=%u", MAKELEVEL_NAME, makelevel + 1);
|
||
*++result = 0;
|
||
|
||
hash_free (&table, 0);
|
||
|
||
return result_0;
|
||
}
|
||
|
||
static struct variable *
|
||
set_special_var (struct variable *var)
|
||
{
|
||
if (streq (var->name, RECIPEPREFIX_NAME))
|
||
{
|
||
/* The user is resetting the command introduction prefix. This has to
|
||
happen immediately, so that subsequent rules are interpreted
|
||
properly. */
|
||
cmd_prefix = var->value[0]=='\0' ? RECIPEPREFIX_DEFAULT : var->value[0];
|
||
}
|
||
|
||
return var;
|
||
}
|
||
|
||
/* Given a variable, a value, and a flavor, define the variable.
|
||
See the try_variable_definition() function for details on the parameters. */
|
||
|
||
struct variable *
|
||
do_variable_definition (const struct floc *flocp, const char *varname,
|
||
const char *value, enum variable_origin origin,
|
||
enum variable_flavor flavor, int target_var)
|
||
{
|
||
const char *p;
|
||
char *alloc_value = NULL;
|
||
struct variable *v;
|
||
int append = 0;
|
||
int conditional = 0;
|
||
|
||
/* Calculate the variable's new value in VALUE. */
|
||
|
||
switch (flavor)
|
||
{
|
||
default:
|
||
case f_bogus:
|
||
/* Should not be possible. */
|
||
abort ();
|
||
case f_simple:
|
||
/* A simple variable definition "var := value". Expand the value.
|
||
We have to allocate memory since otherwise it'll clobber the
|
||
variable buffer, and we may still need that if we're looking at a
|
||
target-specific variable. */
|
||
p = alloc_value = allocated_variable_expand (value);
|
||
break;
|
||
case f_conditional:
|
||
/* A conditional variable definition "var ?= value".
|
||
The value is set IFF the variable is not defined yet. */
|
||
v = lookup_variable (varname, strlen (varname));
|
||
if (v)
|
||
return v->special ? set_special_var (v) : v;
|
||
|
||
conditional = 1;
|
||
flavor = f_recursive;
|
||
/* FALLTHROUGH */
|
||
case f_recursive:
|
||
/* A recursive variable definition "var = value".
|
||
The value is used verbatim. */
|
||
p = value;
|
||
break;
|
||
case f_append:
|
||
{
|
||
/* If we have += but we're in a target variable context, we want to
|
||
append only with other variables in the context of this target. */
|
||
if (target_var)
|
||
{
|
||
append = 1;
|
||
v = lookup_variable_in_set (varname, strlen (varname),
|
||
current_variable_set_list->set);
|
||
|
||
/* Don't append from the global set if a previous non-appending
|
||
target-specific variable definition exists. */
|
||
if (v && !v->append)
|
||
append = 0;
|
||
}
|
||
else
|
||
v = lookup_variable (varname, strlen (varname));
|
||
|
||
if (v == 0)
|
||
{
|
||
/* There was no old value.
|
||
This becomes a normal recursive definition. */
|
||
p = value;
|
||
flavor = f_recursive;
|
||
}
|
||
else
|
||
{
|
||
/* Paste the old and new values together in VALUE. */
|
||
|
||
unsigned int oldlen, vallen;
|
||
const char *val;
|
||
char *tp;
|
||
|
||
val = value;
|
||
if (v->recursive)
|
||
/* The previous definition of the variable was recursive.
|
||
The new value is the unexpanded old and new values. */
|
||
flavor = f_recursive;
|
||
else
|
||
/* The previous definition of the variable was simple.
|
||
The new value comes from the old value, which was expanded
|
||
when it was set; and from the expanded new value. Allocate
|
||
memory for the expansion as we may still need the rest of the
|
||
buffer if we're looking at a target-specific variable. */
|
||
val = alloc_value = allocated_variable_expand (val);
|
||
|
||
oldlen = strlen (v->value);
|
||
vallen = strlen (val);
|
||
tp = alloca (oldlen + 1 + vallen + 1);
|
||
memcpy (tp, v->value, oldlen);
|
||
tp[oldlen] = ' ';
|
||
memcpy (&tp[oldlen + 1], val, vallen + 1);
|
||
p = tp;
|
||
}
|
||
}
|
||
}
|
||
|
||
#ifdef __MSDOS__
|
||
/* Many Unix Makefiles include a line saying "SHELL=/bin/sh", but
|
||
non-Unix systems don't conform to this default configuration (in
|
||
fact, most of them don't even have `/bin'). On the other hand,
|
||
$SHELL in the environment, if set, points to the real pathname of
|
||
the shell.
|
||
Therefore, we generally won't let lines like "SHELL=/bin/sh" from
|
||
the Makefile override $SHELL from the environment. But first, we
|
||
look for the basename of the shell in the directory where SHELL=
|
||
points, and along the $PATH; if it is found in any of these places,
|
||
we define $SHELL to be the actual pathname of the shell. Thus, if
|
||
you have bash.exe installed as d:/unix/bash.exe, and d:/unix is on
|
||
your $PATH, then SHELL=/usr/local/bin/bash will have the effect of
|
||
defining SHELL to be "d:/unix/bash.exe". */
|
||
if ((origin == o_file || origin == o_override)
|
||
&& strcmp (varname, "SHELL") == 0)
|
||
{
|
||
PATH_VAR (shellpath);
|
||
extern char * __dosexec_find_on_path (const char *, char *[], char *);
|
||
|
||
/* See if we can find "/bin/sh.exe", "/bin/sh.com", etc. */
|
||
if (__dosexec_find_on_path (p, NULL, shellpath))
|
||
{
|
||
char *tp;
|
||
|
||
for (tp = shellpath; *tp; tp++)
|
||
if (*tp == '\\')
|
||
*tp = '/';
|
||
|
||
v = define_variable_loc (varname, strlen (varname),
|
||
shellpath, origin, flavor == f_recursive,
|
||
flocp);
|
||
}
|
||
else
|
||
{
|
||
const char *shellbase, *bslash;
|
||
struct variable *pathv = lookup_variable ("PATH", 4);
|
||
char *path_string;
|
||
char *fake_env[2];
|
||
size_t pathlen = 0;
|
||
|
||
shellbase = strrchr (p, '/');
|
||
bslash = strrchr (p, '\\');
|
||
if (!shellbase || bslash > shellbase)
|
||
shellbase = bslash;
|
||
if (!shellbase && p[1] == ':')
|
||
shellbase = p + 1;
|
||
if (shellbase)
|
||
shellbase++;
|
||
else
|
||
shellbase = p;
|
||
|
||
/* Search for the basename of the shell (with standard
|
||
executable extensions) along the $PATH. */
|
||
if (pathv)
|
||
pathlen = strlen (pathv->value);
|
||
path_string = xmalloc (5 + pathlen + 2 + 1);
|
||
/* On MSDOS, current directory is considered as part of $PATH. */
|
||
sprintf (path_string, "PATH=.;%s", pathv ? pathv->value : "");
|
||
fake_env[0] = path_string;
|
||
fake_env[1] = 0;
|
||
if (__dosexec_find_on_path (shellbase, fake_env, shellpath))
|
||
{
|
||
char *tp;
|
||
|
||
for (tp = shellpath; *tp; tp++)
|
||
if (*tp == '\\')
|
||
*tp = '/';
|
||
|
||
v = define_variable_loc (varname, strlen (varname),
|
||
shellpath, origin,
|
||
flavor == f_recursive, flocp);
|
||
}
|
||
else
|
||
v = lookup_variable (varname, strlen (varname));
|
||
|
||
free (path_string);
|
||
}
|
||
}
|
||
else
|
||
#endif /* __MSDOS__ */
|
||
#ifdef WINDOWS32
|
||
if ((origin == o_file || origin == o_override || origin == o_command)
|
||
&& streq (varname, "SHELL"))
|
||
{
|
||
extern char *default_shell;
|
||
|
||
/* Call shell locator function. If it returns TRUE, then
|
||
set no_default_sh_exe to indicate sh was found and
|
||
set new value for SHELL variable. */
|
||
|
||
if (find_and_set_default_shell (p))
|
||
{
|
||
v = define_variable_in_set (varname, strlen (varname), default_shell,
|
||
origin, flavor == f_recursive,
|
||
(target_var
|
||
? current_variable_set_list->set
|
||
: NULL),
|
||
flocp);
|
||
no_default_sh_exe = 0;
|
||
}
|
||
else
|
||
{
|
||
if (alloc_value)
|
||
free (alloc_value);
|
||
|
||
alloc_value = allocated_variable_expand (p);
|
||
if (find_and_set_default_shell (alloc_value))
|
||
{
|
||
v = define_variable_in_set (varname, strlen (varname), p,
|
||
origin, flavor == f_recursive,
|
||
(target_var
|
||
? current_variable_set_list->set
|
||
: NULL),
|
||
flocp);
|
||
no_default_sh_exe = 0;
|
||
}
|
||
else
|
||
v = lookup_variable (varname, strlen (varname));
|
||
}
|
||
}
|
||
else
|
||
#endif
|
||
|
||
/* If we are defining variables inside an $(eval ...), we might have a
|
||
different variable context pushed, not the global context (maybe we're
|
||
inside a $(call ...) or something. Since this function is only ever
|
||
invoked in places where we want to define globally visible variables,
|
||
make sure we define this variable in the global set. */
|
||
|
||
v = define_variable_in_set (varname, strlen (varname), p,
|
||
origin, flavor == f_recursive,
|
||
(target_var
|
||
? current_variable_set_list->set : NULL),
|
||
flocp);
|
||
v->append = append;
|
||
v->conditional = conditional;
|
||
|
||
if (alloc_value)
|
||
free (alloc_value);
|
||
|
||
return v->special ? set_special_var (v) : v;
|
||
}
|
||
|
||
/* Parse P (a null-terminated string) as a variable definition.
|
||
|
||
If it is not a variable definition, return NULL.
|
||
|
||
If it is a variable definition, return a pointer to the char after the
|
||
assignment token and set *FLAVOR to the type of variable assignment. */
|
||
|
||
char *
|
||
parse_variable_definition (const char *p, enum variable_flavor *flavor)
|
||
{
|
||
int wspace = 0;
|
||
|
||
p = next_token (p);
|
||
|
||
while (1)
|
||
{
|
||
int c = *p++;
|
||
|
||
/* If we find a comment or EOS, it's not a variable definition. */
|
||
if (c == '\0' || c == '#')
|
||
return NULL;
|
||
|
||
if (c == '$')
|
||
{
|
||
/* This begins a variable expansion reference. Make sure we don't
|
||
treat chars inside the reference as assignment tokens. */
|
||
char closeparen;
|
||
int count;
|
||
c = *p++;
|
||
if (c == '(')
|
||
closeparen = ')';
|
||
else if (c == '{')
|
||
closeparen = '}';
|
||
else
|
||
/* '$$' or '$X'. Either way, nothing special to do here. */
|
||
continue;
|
||
|
||
/* P now points past the opening paren or brace.
|
||
Count parens or braces until it is matched. */
|
||
count = 0;
|
||
for (; *p != '\0'; ++p)
|
||
{
|
||
if (*p == c)
|
||
++count;
|
||
else if (*p == closeparen && --count < 0)
|
||
{
|
||
++p;
|
||
break;
|
||
}
|
||
}
|
||
continue;
|
||
}
|
||
|
||
/* If we find whitespace skip it, and remember we found it. */
|
||
if (isblank ((unsigned char)c))
|
||
{
|
||
wspace = 1;
|
||
p = next_token (p);
|
||
c = *p++;
|
||
}
|
||
|
||
|
||
if (c == '=')
|
||
{
|
||
*flavor = f_recursive;
|
||
return (char *)p;
|
||
}
|
||
/* Match assignment variants (:=, +=, ?=) */
|
||
else if (*p == '=')
|
||
{
|
||
switch (c)
|
||
{
|
||
case ':':
|
||
*flavor = f_simple;
|
||
break;
|
||
case '+':
|
||
*flavor = f_append;
|
||
break;
|
||
case '?':
|
||
*flavor = f_conditional;
|
||
break;
|
||
default:
|
||
/* If we skipped whitespace, non-assignments means no var. */
|
||
if (wspace)
|
||
return NULL;
|
||
|
||
/* Might be assignment, or might be $= or #=. Check. */
|
||
continue;
|
||
}
|
||
return (char *)++p;
|
||
}
|
||
else if (c == ':')
|
||
/* A colon other than := is a rule line, not a variable defn. */
|
||
return NULL;
|
||
|
||
/* If we skipped whitespace, non-assignments means no var. */
|
||
if (wspace)
|
||
return NULL;
|
||
}
|
||
|
||
return (char *)p;
|
||
}
|
||
|
||
/* Try to interpret LINE (a null-terminated string) as a variable definition.
|
||
|
||
If LINE was recognized as a variable definition, a pointer to its `struct
|
||
variable' is returned. If LINE is not a variable definition, NULL is
|
||
returned. */
|
||
|
||
struct variable *
|
||
assign_variable_definition (struct variable *v, char *line)
|
||
{
|
||
char *beg;
|
||
char *end;
|
||
enum variable_flavor flavor;
|
||
char *name;
|
||
|
||
beg = next_token (line);
|
||
line = parse_variable_definition (beg, &flavor);
|
||
if (!line)
|
||
return NULL;
|
||
|
||
end = line - (flavor == f_recursive ? 1 : 2);
|
||
while (end > beg && isblank ((unsigned char)end[-1]))
|
||
--end;
|
||
line = next_token (line);
|
||
v->value = line;
|
||
v->flavor = flavor;
|
||
|
||
/* Expand the name, so "$(foo)bar = baz" works. */
|
||
name = alloca (end - beg + 1);
|
||
memcpy (name, beg, end - beg);
|
||
name[end - beg] = '\0';
|
||
v->name = allocated_variable_expand (name);
|
||
|
||
if (v->name[0] == '\0')
|
||
fatal (&v->fileinfo, _("empty variable name"));
|
||
|
||
return v;
|
||
}
|
||
|
||
/* Try to interpret LINE (a null-terminated string) as a variable definition.
|
||
|
||
ORIGIN may be o_file, o_override, o_env, o_env_override,
|
||
or o_command specifying that the variable definition comes
|
||
from a makefile, an override directive, the environment with
|
||
or without the -e switch, or the command line.
|
||
|
||
See the comments for assign_variable_definition().
|
||
|
||
If LINE was recognized as a variable definition, a pointer to its `struct
|
||
variable' is returned. If LINE is not a variable definition, NULL is
|
||
returned. */
|
||
|
||
struct variable *
|
||
try_variable_definition (const struct floc *flocp, char *line,
|
||
enum variable_origin origin, int target_var)
|
||
{
|
||
struct variable v;
|
||
struct variable *vp;
|
||
|
||
if (flocp != 0)
|
||
v.fileinfo = *flocp;
|
||
else
|
||
v.fileinfo.filenm = 0;
|
||
|
||
if (!assign_variable_definition (&v, line))
|
||
return 0;
|
||
|
||
vp = do_variable_definition (flocp, v.name, v.value,
|
||
origin, v.flavor, target_var);
|
||
|
||
free (v.name);
|
||
|
||
return vp;
|
||
}
|
||
|
||
/* Print information for variable V, prefixing it with PREFIX. */
|
||
|
||
static void
|
||
print_variable (const void *item, void *arg)
|
||
{
|
||
const struct variable *v = item;
|
||
const char *prefix = arg;
|
||
const char *origin;
|
||
|
||
switch (v->origin)
|
||
{
|
||
case o_default:
|
||
origin = _("default");
|
||
break;
|
||
case o_env:
|
||
origin = _("environment");
|
||
break;
|
||
case o_file:
|
||
origin = _("makefile");
|
||
break;
|
||
case o_env_override:
|
||
origin = _("environment under -e");
|
||
break;
|
||
case o_command:
|
||
origin = _("command line");
|
||
break;
|
||
case o_override:
|
||
origin = _("`override' directive");
|
||
break;
|
||
case o_automatic:
|
||
origin = _("automatic");
|
||
break;
|
||
case o_invalid:
|
||
default:
|
||
abort ();
|
||
}
|
||
fputs ("# ", stdout);
|
||
fputs (origin, stdout);
|
||
if (v->private_var)
|
||
fputs (" private", stdout);
|
||
if (v->fileinfo.filenm)
|
||
printf (_(" (from `%s', line %lu)"),
|
||
v->fileinfo.filenm, v->fileinfo.lineno);
|
||
putchar ('\n');
|
||
fputs (prefix, stdout);
|
||
|
||
/* Is this a `define'? */
|
||
if (v->recursive && strchr (v->value, '\n') != 0)
|
||
printf ("define %s\n%s\nendef\n", v->name, v->value);
|
||
else
|
||
{
|
||
char *p;
|
||
|
||
printf ("%s %s= ", v->name, v->recursive ? v->append ? "+" : "" : ":");
|
||
|
||
/* Check if the value is just whitespace. */
|
||
p = next_token (v->value);
|
||
if (p != v->value && *p == '\0')
|
||
/* All whitespace. */
|
||
printf ("$(subst ,,%s)", v->value);
|
||
else if (v->recursive)
|
||
fputs (v->value, stdout);
|
||
else
|
||
/* Double up dollar signs. */
|
||
for (p = v->value; *p != '\0'; ++p)
|
||
{
|
||
if (*p == '$')
|
||
putchar ('$');
|
||
putchar (*p);
|
||
}
|
||
putchar ('\n');
|
||
}
|
||
}
|
||
|
||
|
||
/* Print all the variables in SET. PREFIX is printed before
|
||
the actual variable definitions (everything else is comments). */
|
||
|
||
void
|
||
print_variable_set (struct variable_set *set, char *prefix)
|
||
{
|
||
hash_map_arg (&set->table, print_variable, prefix);
|
||
|
||
fputs (_("# variable set hash-table stats:\n"), stdout);
|
||
fputs ("# ", stdout);
|
||
hash_print_stats (&set->table, stdout);
|
||
putc ('\n', stdout);
|
||
}
|
||
|
||
/* Print the data base of variables. */
|
||
|
||
void
|
||
print_variable_data_base (void)
|
||
{
|
||
puts (_("\n# Variables\n"));
|
||
|
||
print_variable_set (&global_variable_set, "");
|
||
|
||
puts (_("\n# Pattern-specific Variable Values"));
|
||
|
||
{
|
||
struct pattern_var *p;
|
||
int rules = 0;
|
||
|
||
for (p = pattern_vars; p != 0; p = p->next)
|
||
{
|
||
++rules;
|
||
printf ("\n%s :\n", p->target);
|
||
print_variable (&p->variable, "# ");
|
||
}
|
||
|
||
if (rules == 0)
|
||
puts (_("\n# No pattern-specific variable values."));
|
||
else
|
||
printf (_("\n# %u pattern-specific variable values"), rules);
|
||
}
|
||
}
|
||
|
||
|
||
/* Print all the local variables of FILE. */
|
||
|
||
void
|
||
print_file_variables (const struct file *file)
|
||
{
|
||
if (file->variables != 0)
|
||
print_variable_set (file->variables->set, "# ");
|
||
}
|
||
|
||
#ifdef WINDOWS32
|
||
void
|
||
sync_Path_environment (void)
|
||
{
|
||
char *path = allocated_variable_expand ("$(PATH)");
|
||
static char *environ_path = NULL;
|
||
|
||
if (!path)
|
||
return;
|
||
|
||
/*
|
||
* If done this before, don't leak memory unnecessarily.
|
||
* Free the previous entry before allocating new one.
|
||
*/
|
||
if (environ_path)
|
||
free (environ_path);
|
||
|
||
/*
|
||
* Create something WINDOWS32 world can grok
|
||
*/
|
||
convert_Path_to_windows32 (path, ';');
|
||
environ_path = xstrdup (concat ("PATH", "=", path));
|
||
putenv (environ_path);
|
||
free (path);
|
||
}
|
||
#endif
|