/* Target file management for GNU Make.
Copyright (C) 1988-2016 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 3 of the License, 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
this program. If not, see . */
#include "makeint.h"
#include
#include "filedef.h"
#include "dep.h"
#include "job.h"
#include "commands.h"
#include "variable.h"
#include "debug.h"
#include "hash.h"
#ifdef CONFIG_WITH_STRCACHE2
# include
#endif
/* Remember whether snap_deps has been invoked: we need this to be sure we
don't add new rules (via $(eval ...)) afterwards. In the future it would
be nice to support this, but it means we'd need to re-run snap_deps() or
at least its functionality... it might mean changing snap_deps() to be run
per-file, so we can invoke it after the eval... or remembering which files
in the hash have been snapped (a new boolean flag?) and having snap_deps()
only work on files which have not yet been snapped. */
int snapped_deps = 0;
/* Hash table of files the makefile knows how to make. */
#ifndef CONFIG_WITH_STRCACHE2
static unsigned long
file_hash_1 (const void *key)
{
return_ISTRING_HASH_1 (((struct file const *) key)->hname);
}
static unsigned long
file_hash_2 (const void *key)
{
return_ISTRING_HASH_2 (((struct file const *) key)->hname);
}
#endif /* !CONFIG_WITH_STRCACHE2 */
static int
file_hash_cmp (const void *x, const void *y)
{
#ifndef CONFIG_WITH_STRCACHE2
return_ISTRING_COMPARE (((struct file const *) x)->hname,
((struct file const *) y)->hname);
#else /* CONFIG_WITH_STRCACHE2 */
return ((struct file const *) x)->hname
== ((struct file const *) y)->hname ? 0 : -1;
#endif /* CONFIG_WITH_STRCACHE2 */
}
static struct hash_table files;
/* Whether or not .SECONDARY with no prerequisites was given. */
static int all_secondary = 0;
/* Access the hash table of all file records.
lookup_file given a name, return the struct file * for that name,
or nil if there is none.
*/
#ifndef CONFIG_WITH_STRCACHE2
struct file *
lookup_file (const char *name)
#else /* CONFIG_WITH_STRCACHE2 */
MY_INLINE struct file *
lookup_file_common (const char *name, int cached)
#endif /* CONFIG_WITH_STRCACHE2 */
{
struct file *f;
struct file file_key;
#ifdef VMS
int want_vmsify;
#ifndef WANT_CASE_SENSITIVE_TARGETS
char *lname;
#endif
#endif
assert (*name != '\0');
/* This is also done in parse_file_seq, so this is redundant
for names read from makefiles. It is here for names passed
on the command line. */
#ifdef VMS
want_vmsify = (strpbrk (name, "]>:^") != NULL);
# ifndef WANT_CASE_SENSITIVE_TARGETS
if (*name != '.')
{
const char *n;
char *ln;
lname = xstrdup (name);
for (n = name, ln = lname; *n != '\0'; ++n, ++ln)
*ln = isupper ((unsigned char)*n) ? tolower ((unsigned char)*n) : *n;
*ln = '\0';
name = lname;
}
# endif
while (name[0] == '[' && name[1] == ']' && name[2] != '\0')
name += 2;
while (name[0] == '<' && name[1] == '>' && name[2] != '\0')
name += 2;
#endif
while (name[0] == '.'
#ifdef HAVE_DOS_PATHS
&& (name[1] == '/' || name[1] == '\\')
#else
&& name[1] == '/'
#endif
&& name[2] != '\0')
{
name += 2;
while (*name == '/'
#ifdef HAVE_DOS_PATHS
|| *name == '\\'
#endif
)
/* Skip following slashes: ".//foo" is "foo", not "/foo". */
++name;
}
if (*name == '\0')
{
/* It was all slashes after a dot. */
#if defined(_AMIGA)
name = "";
#else
name = "./";
#endif
#if defined(VMS)
/* TODO - This section is probably not needed. */
if (want_vmsify)
name = "[]";
#endif
}
#ifndef CONFIG_WITH_STRCACHE2
file_key.hname = name;
f = hash_find_item (&files, &file_key);
#else /* CONFIG_WITH_STRCACHE2 */
if (!cached)
{
file_key.hname = strcache2_lookup_file (&file_strcache, name, strlen (name));
if (file_key.hname)
f = hash_find_item_strcached (&files, &file_key);
else
f = NULL;
}
else
{
file_key.hname = name;
f = hash_find_item_strcached (&files, &file_key);
}
#endif /* CONFIG_WITH_STRCACHE2 */
#if defined(VMS) && !defined(WANT_CASE_SENSITIVE_TARGETS)
if (*name != '.')
free (lname);
#endif
return f;
}
#ifdef CONFIG_WITH_STRCACHE2
/* Given a name, return the struct file * for that name,
or nil if there is none. */
struct file *
lookup_file (const char *name)
{
return lookup_file_common (name, 0 /* cached */);
}
/* Given a name in the strcache, return the struct file * for that name,
or nil if there is none. */
struct file *
lookup_file_cached (const char *name)
{
assert (strcache_iscached (name));
return lookup_file_common (name, 1 /* cached */);
}
#endif /* CONFIG_WITH_STRCACHE2 */
/* Look up a file record for file NAME and return it.
Create a new record if one doesn't exist. NAME will be stored in the
new record so it should be constant or in the strcache etc.
*/
struct file *
enter_file (const char *name)
{
struct file *f;
struct file *new;
struct file **file_slot;
struct file file_key;
assert (*name != '\0');
assert (! verify_flag || strcache_iscached (name));
#if defined(VMS) && !defined(WANT_CASE_SENSITIVE_TARGETS)
if (*name != '.')
{
const char *n;
char *lname, *ln;
lname = xstrdup (name);
for (n = name, ln = lname; *n != '\0'; ++n, ++ln)
if (isupper ((unsigned char)*n))
*ln = tolower ((unsigned char)*n);
else
*ln = *n;
*ln = '\0';
name = strcache_add (lname);
free (lname);
}
#endif
file_key.hname = name;
#ifndef CONFIG_WITH_STRCACHE2
file_slot = (struct file **) hash_find_slot (&files, &file_key);
#else /* CONFIG_WITH_STRCACHE2 */
file_slot = (struct file **) hash_find_slot_strcached (&files, &file_key);
#endif /* CONFIG_WITH_STRCACHE2 */
f = *file_slot;
if (! HASH_VACANT (f) && !f->double_colon)
{
f->builtin = 0;
return f;
}
#ifndef CONFIG_WITH_ALLOC_CACHES
new = xcalloc (sizeof (struct file));
#else
new = alloccache_calloc (&file_cache);
#endif
new->name = new->hname = name;
new->update_status = us_none;
if (HASH_VACANT (f))
{
new->last = new;
hash_insert_at (&files, new, file_slot);
}
else
{
/* There is already a double-colon entry for this file. */
new->double_colon = f;
f->last->prev = new;
f->last = new;
}
#ifdef CONFIG_WITH_2ND_TARGET_EXPANSION
/* Check if the name needs 2nd expansion or not. */
if (second_target_expansion && strchr (name, '$') != NULL)
new->need_2nd_target_expansion = 1;
#endif
return new;
}
/* Rehash FILE to NAME. This is not as simple as resetting
the 'hname' member, since it must be put in a new hash bucket,
and possibly merged with an existing file called NAME. */
void
rehash_file (struct file *from_file, const char *to_hname)
{
struct file file_key;
struct file **file_slot;
struct file *to_file;
struct file *deleted_file;
struct file *f;
#ifdef CONFIG_WITH_STRCACHE2
assert (strcache_iscached (to_hname));
assert (strcache_iscached (from_file->hname));
#endif
/* If it's already that name, we're done. */
from_file->builtin = 0;
file_key.hname = to_hname;
if (! file_hash_cmp (from_file, &file_key))
return;
/* Find the end of the renamed list for the "from" file. */
file_key.hname = from_file->hname;
while (from_file->renamed != 0)
from_file = from_file->renamed;
if (file_hash_cmp (from_file, &file_key))
/* hname changed unexpectedly!! */
abort ();
/* Remove the "from" file from the hash. */
#ifndef CONFIG_WITH_STRCACHE2
deleted_file = hash_delete (&files, from_file);
#else
deleted_file = hash_delete_strcached (&files, from_file);
#endif
if (deleted_file != from_file)
/* from_file isn't the one stored in files */
abort ();
/* Find where the newly renamed file will go in the hash. */
file_key.hname = to_hname;
#ifndef CONFIG_WITH_STRCACHE2
file_slot = (struct file **) hash_find_slot (&files, &file_key);
#else /* CONFIG_WITH_STRCACHE2 */
file_slot = (struct file **) hash_find_slot_strcached (&files, &file_key);
#endif /* CONFIG_WITH_STRCACHE2 */
to_file = *file_slot;
/* Change the hash name for this file. */
from_file->hname = to_hname;
for (f = from_file->double_colon; f != 0; f = f->prev)
f->hname = to_hname;
/* If the new name doesn't exist yet just set it to the renamed file. */
if (HASH_VACANT (to_file))
{
hash_insert_at (&files, from_file, file_slot);
return;
}
/* TO_FILE already exists under TO_HNAME.
We must retain TO_FILE and merge FROM_FILE into it. */
if (from_file->cmds != 0)
{
if (to_file->cmds == 0)
to_file->cmds = from_file->cmds;
else if (from_file->cmds != to_file->cmds)
{
size_t l = strlen (from_file->name);
/* We have two sets of commands. We will go with the
one given in the rule explicitly mentioning this name,
but give a message to let the user know what's going on. */
if (to_file->cmds->fileinfo.filenm != 0)
error (&from_file->cmds->fileinfo,
l + strlen (to_file->cmds->fileinfo.filenm) + INTSTR_LENGTH,
_("Recipe was specified for file '%s' at %s:%lu,"),
from_file->name, to_file->cmds->fileinfo.filenm,
to_file->cmds->fileinfo.lineno);
else
error (&from_file->cmds->fileinfo, l,
_("Recipe for file '%s' was found by implicit rule search,"),
from_file->name);
l += strlen (to_hname);
error (&from_file->cmds->fileinfo, l,
_("but '%s' is now considered the same file as '%s'."),
from_file->name, to_hname);
error (&from_file->cmds->fileinfo, l,
_("Recipe for '%s' will be ignored in favor of the one for '%s'."),
to_hname, from_file->name);
}
}
#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
/* Merge multi target attributes and considerations. */
if (from_file->multi_head)
{
if (to_file->multi_head)
OSS (fatal, NILF, _("can't rename/merge multi target '%s' with multi target '%s'"),
from_file->name, to_hname);
to_file->multi_maybe = from_file->multi_maybe;
to_file->multi_next = from_file->multi_next;
to_file->multi_head = f = from_file->multi_head;
if (f == from_file)
{
for (; f != 0; f = f->multi_next)
f->multi_head = to_file;
to_file->multi_head = to_file;
}
else
{
while (f->multi_next != from_file)
f = f->multi_next;
assert(f->multi_next == from_file);
f->multi_next = to_file;
}
# ifdef NDEBUG
from_file->multi_head = to_file->multi_head;
from_file->multi_next = NULL;
# else
from_file->multi_head = (struct file *)0x2; /* poison */
from_file->multi_next = (struct file *)0x8;
# endif
}
#endif
/* Merge the dependencies of the two files. */
if (to_file->deps == 0)
to_file->deps = from_file->deps;
else
{
struct dep *deps = to_file->deps;
while (deps->next != 0)
deps = deps->next;
deps->next = from_file->deps;
}
merge_variable_set_lists (&to_file->variables, from_file->variables);
if (to_file->double_colon && from_file->is_target && !from_file->double_colon)
OSS (fatal, NILF, _("can't rename single-colon '%s' to double-colon '%s'"),
from_file->name, to_hname);
if (!to_file->double_colon && from_file->double_colon)
{
if (to_file->is_target)
OSS (fatal, NILF,
_("can't rename double-colon '%s' to single-colon '%s'"),
from_file->name, to_hname);
else
to_file->double_colon = from_file->double_colon;
}
if (from_file->last_mtime > to_file->last_mtime)
/* %%% Kludge so -W wins on a file that gets vpathized. */
to_file->last_mtime = from_file->last_mtime;
to_file->mtime_before_update = from_file->mtime_before_update;
#define MERGE(field) to_file->field |= from_file->field
MERGE (precious);
MERGE (tried_implicit);
MERGE (updating);
MERGE (updated);
MERGE (is_target);
MERGE (cmd_target);
MERGE (phony);
MERGE (loaded);
MERGE (ignore_vpath);
#undef MERGE
to_file->builtin = 0;
from_file->renamed = to_file;
}
/* Rename FILE to NAME. This is not as simple as resetting
the 'name' member, since it must be put in a new hash bucket,
and possibly merged with an existing file called NAME. */
void
rename_file (struct file *from_file, const char *to_hname)
{
rehash_file (from_file, to_hname);
while (from_file)
{
from_file->name = from_file->hname;
from_file = from_file->prev;
}
}
#ifdef CONFIG_WITH_2ND_TARGET_EXPANSION
/* Performs secondary target name expansion and then renames
the file using rename_file. */
static void
do_2nd_target_expansion (struct file *f)
{
unsigned int len;
char *tmp_name = allocated_variable_expand_2 (
f->name, strcache2_get_len (&file_strcache, f->name), &len);
const char *name = strcache_add_len (tmp_name, len);
free (tmp_name);
rename_file (f, name);
}
#endif /* CONFIG_WITH_2ND_TARGET_EXPANSION */
/* Remove all nonprecious intermediate files.
If SIG is nonzero, this was caused by a fatal signal,
meaning that a different message will be printed, and
the message will go to stderr rather than stdout. */
void
remove_intermediates (int sig)
{
struct file **file_slot;
struct file **file_end;
int doneany = 0;
/* If there's no way we will ever remove anything anyway, punt early. */
if (question_flag || touch_flag || all_secondary)
return;
if (sig && just_print_flag)
return;
file_slot = (struct file **) files.ht_vec;
file_end = file_slot + files.ht_size;
for ( ; file_slot < file_end; file_slot++)
if (! HASH_VACANT (*file_slot))
{
struct file *f = *file_slot;
/* Is this file eligible for automatic deletion?
Yes, IFF: it's marked intermediate, it's not secondary, it wasn't
given on the command line, and it's either a -include makefile or
it's not precious. */
if (f->intermediate && (f->dontcare || !f->precious)
&& !f->secondary && !f->cmd_target)
{
int status;
if (f->update_status == us_none)
/* If nothing would have created this file yet,
don't print an "rm" command for it. */
continue;
if (just_print_flag)
status = 0;
else
{
status = unlink (f->name);
if (status < 0 && errno == ENOENT)
continue;
}
if (!f->dontcare)
{
if (sig)
OS (error, NILF,
_("*** Deleting intermediate file '%s'"), f->name);
else
{
if (! doneany)
DB (DB_BASIC, (_("Removing intermediate files...\n")));
if (!silent_flag)
{
if (! doneany)
{
fputs ("rm ", stdout);
doneany = 1;
}
else
putchar (' ');
fputs (f->name, stdout);
fflush (stdout);
}
}
if (status < 0)
perror_with_name ("unlink: ", f->name);
}
}
}
if (doneany && !sig)
{
putchar ('\n');
fflush (stdout);
}
}
/* Given a string containing prerequisites (fully expanded), break it up into
a struct dep list. Enter each of these prereqs into the file database.
*/
struct dep *
split_prereqs (char *p)
{
struct dep *new = PARSE_FILE_SEQ (&p, struct dep, MAP_PIPE, NULL,
PARSEFS_NONE);
if (*p)
{
/* Files that follow '|' are "order-only" prerequisites that satisfy the
dependency by existing: their modification times are irrelevant. */
struct dep *ood;
++p;
ood = PARSE_SIMPLE_SEQ (&p, struct dep);
if (! new)
new = ood;
else
{
struct dep *dp;
for (dp = new; dp->next != NULL; dp = dp->next)
;
dp->next = ood;
}
for (; ood != NULL; ood = ood->next)
ood->ignore_mtime = 1;
}
return new;
}
/* Given a list of prerequisites, enter them into the file database.
If STEM is set then first expand patterns using STEM. */
struct dep *
enter_prereqs (struct dep *deps, const char *stem)
{
struct dep *d1;
if (deps == 0)
return 0;
/* If we have a stem, expand the %'s. We use patsubst_expand to translate
the prerequisites' patterns into plain prerequisite names. */
if (stem)
{
const char *pattern = "%";
char *buffer = variable_expand ("");
struct dep *dp = deps, *dl = 0;
while (dp != 0)
{
char *percent;
int nl = strlen (dp->name) + 1;
char *nm = alloca (nl);
memcpy (nm, dp->name, nl);
percent = find_percent (nm);
if (percent)
{
char *o;
/* We have to handle empty stems specially, because that
would be equivalent to $(patsubst %,dp->name,) which
will always be empty. */
if (stem[0] == '\0')
{
memmove (percent, percent+1, strlen (percent));
o = variable_buffer_output (buffer, nm, strlen (nm) + 1);
}
else
o = patsubst_expand_pat (buffer, stem, pattern, nm,
pattern+1, percent+1);
/* If the name expanded to the empty string, ignore it. */
if (buffer[0] == '\0')
{
struct dep *df = dp;
if (dp == deps)
dp = deps = deps->next;
else
dp = dl->next = dp->next;
free_dep (df);
continue;
}
/* Save the name. */
dp->name = strcache_add_len (buffer, o - buffer);
}
dp->stem = stem;
dp->staticpattern = 1;
dl = dp;
dp = dp->next;
}
}
/* Enter them as files, unless they need a 2nd expansion. */
for (d1 = deps; d1 != 0; d1 = d1->next)
{
if (d1->need_2nd_expansion)
continue;
d1->file = lookup_file (d1->name);
if (d1->file == 0)
d1->file = enter_file (d1->name);
d1->staticpattern = 0;
d1->name = 0;
}
return deps;
}
/* Set the intermediate flag. */
static void
set_intermediate (const void *item)
{
struct file *f = (struct file *) item;
f->intermediate = 1;
}
/* Expand and parse each dependency line. */
static void
expand_deps (struct file *f)
{
struct dep *d;
struct dep **dp;
const char *file_stem = f->stem;
int initialized = 0;
f->updating = 0;
/* Walk through the dependencies. For any dependency that needs 2nd
expansion, expand it then insert the result into the list. */
dp = &f->deps;
d = f->deps;
while (d != 0)
{
char *p;
struct dep *new, *next;
char *name = (char *)d->name;
if (! d->name || ! d->need_2nd_expansion)
{
/* This one is all set already. */
dp = &d->next;
d = d->next;
continue;
}
#ifdef CONFIG_WITH_INCLUDEDEP
/* Dependencies loaded by includedep are ready for use and we skip
the expensive parsing and globbing for them. */
if (d->includedep)
{
d->need_2nd_expansion = 0;
d->file = lookup_file (name);
if (d->file == 0)
d->file = enter_file (name);
d->name = 0;
free(name);
dp = &d->next;
d = d->next;
continue;
}
#endif /* CONFIG_WITH_INCLUDEDEP */
/* If it's from a static pattern rule, convert the patterns into
"$*" so they'll expand properly. */
if (d->staticpattern)
{
char *o = variable_expand ("");
o = subst_expand (o, name, "%", "$*", 1, 2, 0);
*o = '\0';
#ifndef CONFIG_WITH_STRCACHE2
free (name);
d->name = name = xstrdup (variable_buffer); /* bird not d->name, can be reallocated */
#else
d->name = strcache2_add (&file_strcache, variable_buffer, o - variable_buffer);
#endif
d->staticpattern = 0;
}
/* We're going to do second expansion so initialize file variables for
the file. Since the stem for static pattern rules comes from
individual dep lines, we will temporarily set f->stem to d->stem. */
if (!initialized)
{
initialize_file_variables (f, 0);
initialized = 1;
}
if (d->stem != 0)
f->stem = d->stem;
#if defined(CONFIG_WITH_COMMANDS_FUNC) || defined (CONFIG_WITH_DOT_MUST_MAKE)
set_file_variables (f, 0 /* real call, f->deps == 0 so we're ok. */);
#else
set_file_variables (f);
#endif
p = variable_expand_for_file (d->name, f);
if (d->stem != 0)
f->stem = file_stem;
/* At this point we don't need the name anymore: free it. */
free (name);
/* Parse the prerequisites and enter them into the file database. */
new = enter_prereqs (split_prereqs (p), d->stem);
/* If there were no prereqs here (blank!) then throw this one out. */
if (new == 0)
{
*dp = d->next;
free_dep (d);
d = *dp;
continue;
}
/* Add newly parsed prerequisites. */
next = d->next;
#ifdef KMK /* bird: memory leak */
assert(new != d);
free_dep (d);
#endif
*dp = new;
for (dp = &new->next, d = new->next; d != 0; dp = &d->next, d = d->next)
;
*dp = next;
d = *dp;
}
}
/* Reset the updating flag. */
static void
reset_updating (const void *item)
{
struct file *f = (struct file *) item;
f->updating = 0;
}
/* For each dependency of each file, make the 'struct dep' point
at the appropriate 'struct file' (which may have to be created).
Also mark the files depended on by .PRECIOUS, .PHONY, .SILENT,
and various other special targets. */
void
snap_deps (void)
{
struct file *f;
struct file *f2;
struct dep *d;
/* Remember that we've done this. Once we start snapping deps we can no
longer define new targets. */
snapped_deps = 1;
#ifdef CONFIG_WITH_2ND_TARGET_EXPANSION
/* Perform 2nd target expansion on files which requires this. This will
be re-inserting (delete+insert) hash table entries so we have to use
hash_dump(). */
if (second_target_expansion)
{
struct file **file_slot_0, **file_end, **file_slot;
# ifdef KMK /* turn on warnings here. */
int save = warn_undefined_variables_flag;
warn_undefined_variables_flag = 1;
# endif
file_slot_0 = (struct file **) hash_dump (&files, 0, 0);
file_end = file_slot_0 + files.ht_fill;
for (file_slot = file_slot_0; file_slot < file_end; file_slot++)
for (f = *file_slot; f != 0; f = f->prev)
if (f->need_2nd_target_expansion)
do_2nd_target_expansion (f);
free (file_slot_0);
# ifdef KMK
warn_undefined_variables_flag = save;
# endif
/* Disable second target expansion now since we won't expand files
entered after this point. (Saves CPU cycles in enter_file()). */
second_target_expansion = 0;
}
#endif /* CONFIG_WITH_2ND_TARGET_EXPANSION */
#ifdef CONFIG_WITH_INCLUDEDEP
/* Process any queued includedep files. Since includedep is supposed
to be *simple* stuff, we can do this after the second target expansion
and thereby save a little time. */
incdep_flush_and_term ();
#endif /* CONFIG_WITH_INCLUDEDEP */
/* Perform second expansion and enter each dependency name as a file. We
must use hash_dump() here because within these loops we likely add new
files to the table, possibly causing an in-situ table expansion.
We only need to do this if second_expansion has been defined; if it
hasn't then all deps were expanded as the makefile was read in. If we
ever change make to be able to unset .SECONDARY_EXPANSION this will have
to change. */
if (second_expansion)
{
struct file **file_slot_0 = (struct file **) hash_dump (&files, 0, 0);
struct file **file_end = file_slot_0 + files.ht_fill;
struct file **file_slot;
const char *suffixes;
/* Expand .SUFFIXES: its prerequisites are used for $$* calc. */
f = lookup_file (".SUFFIXES");
suffixes = f ? f->name : 0;
for (; f != 0; f = f->prev)
expand_deps (f);
#if 0 /* def KMK - not-parallel is a performance kill, but since double-colon is werid anyway, skip this hack. */
/* This is a HACK to work around the still broken test #9 in
features/double_colon. It produces the wrong result if the build is
parallel because of changed evaluation order. Just make these
problematic rules execute in single field till a proper fix is
forthcomming... */
for (file_slot = file_slot_0; file_slot < file_end; file_slot++)
if ( (f = *file_slot) != 0
&& f->double_colon
&& ( f->double_colon != f
|| f->last != f))
for (f2 = f->double_colon; f2 != 0; f2 = f2->prev)
f2->command_flags |= COMMANDS_NOTPARALLEL;
#endif /* KMK */
/* For every target that's not .SUFFIXES, expand its prerequisites. */
for (file_slot = file_slot_0; file_slot < file_end; file_slot++)
for (f = *file_slot; f != 0; f = f->prev)
if (f->name != suffixes)
expand_deps (f);
free (file_slot_0);
}
else
/* We're not doing second expansion, so reset updating. */
hash_map (&files, reset_updating);
/* Now manage all the special targets. */
for (f = lookup_file (".PRECIOUS"); f != 0; f = f->prev)
for (d = f->deps; d != 0; d = d->next)
for (f2 = d->file; f2 != 0; f2 = f2->prev)
f2->precious = 1;
for (f = lookup_file (".LOW_RESOLUTION_TIME"); f != 0; f = f->prev)
for (d = f->deps; d != 0; d = d->next)
for (f2 = d->file; f2 != 0; f2 = f2->prev)
f2->low_resolution_time = 1;
for (f = lookup_file (".PHONY"); f != 0; f = f->prev)
for (d = f->deps; d != 0; d = d->next)
for (f2 = d->file; f2 != 0; f2 = f2->prev)
{
/* Mark this file as phony nonexistent target. */
f2->phony = 1;
f2->is_target = 1;
f2->last_mtime = NONEXISTENT_MTIME;
f2->mtime_before_update = NONEXISTENT_MTIME;
}
for (f = lookup_file (".INTERMEDIATE"); f != 0; f = f->prev)
/* Mark .INTERMEDIATE deps as intermediate files. */
for (d = f->deps; d != 0; d = d->next)
for (f2 = d->file; f2 != 0; f2 = f2->prev)
f2->intermediate = 1;
/* .INTERMEDIATE with no deps does nothing.
Marking all files as intermediates is useless since the goal targets
would be deleted after they are built. */
for (f = lookup_file (".SECONDARY"); f != 0; f = f->prev)
/* Mark .SECONDARY deps as both intermediate and secondary. */
if (f->deps)
for (d = f->deps; d != 0; d = d->next)
for (f2 = d->file; f2 != 0; f2 = f2->prev)
f2->intermediate = f2->secondary = 1;
/* .SECONDARY with no deps listed marks *all* files that way. */
else
{
all_secondary = 1;
hash_map (&files, set_intermediate);
}
f = lookup_file (".EXPORT_ALL_VARIABLES");
if (f != 0 && f->is_target)
export_all_variables = 1;
f = lookup_file (".IGNORE");
if (f != 0 && f->is_target)
{
if (f->deps == 0)
ignore_errors_flag = 1;
else
for (d = f->deps; d != 0; d = d->next)
for (f2 = d->file; f2 != 0; f2 = f2->prev)
f2->command_flags |= COMMANDS_NOERROR;
}
f = lookup_file (".SILENT");
if (f != 0 && f->is_target)
{
if (f->deps == 0)
silent_flag = 1;
else
for (d = f->deps; d != 0; d = d->next)
for (f2 = d->file; f2 != 0; f2 = f2->prev)
f2->command_flags |= COMMANDS_SILENT;
}
f = lookup_file (".NOTPARALLEL");
if (f != 0 && f->is_target)
#ifndef CONFIG_WITH_EXTENDED_NOTPARALLEL
not_parallel = 1;
#else /* CONFIG_WITH_EXTENDED_NOTPARALLEL */
{
if (f->deps == 0)
{
DB (DB_KMK, (_("not_parallel -1\n")));
not_parallel = -1;
}
else
for (d = f->deps; d != 0; d = d->next)
for (f2 = d->file; f2 != 0; f2 = f2->prev)
f2->command_flags |= COMMANDS_NOTPARALLEL;
}
#endif /* CONFIG_WITH_EXTENDED_NOTPARALLEL */
#ifndef NO_MINUS_C_MINUS_O
/* If .POSIX was defined, remove OUTPUT_OPTION to comply. */
/* This needs more work: what if the user sets this in the makefile?
if (posix_pedantic)
define_variable_cname ("OUTPUT_OPTION", "", o_default, 1);
*/
#endif
}
/* Set the 'command_state' member of FILE and all its 'also_make's. */
void
set_command_state (struct file *file, enum cmd_state state)
{
struct dep *d;
file->command_state = state;
for (d = file->also_make; d != 0; d = d->next)
d->file->command_state = state;
#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
if (file->multi_head)
for (file = file->multi_head; file != 0; file = file->multi_next)
file->command_state = state;
#endif
}
/* Convert an external file timestamp to internal form. */
FILE_TIMESTAMP
file_timestamp_cons (const char *fname, time_t stamp, long int ns)
{
int offset = ORDINARY_MTIME_MIN + (FILE_TIMESTAMP_HI_RES ? ns : 0);
FILE_TIMESTAMP s = stamp;
FILE_TIMESTAMP product = (FILE_TIMESTAMP) s << FILE_TIMESTAMP_LO_BITS;
FILE_TIMESTAMP ts = product + offset;
if (! (s <= FILE_TIMESTAMP_S (ORDINARY_MTIME_MAX)
&& product <= ts && ts <= ORDINARY_MTIME_MAX))
{
char buf[FILE_TIMESTAMP_PRINT_LEN_BOUND + 1];
const char *f = fname ? fname : _("Current time");
ts = s <= OLD_MTIME ? ORDINARY_MTIME_MIN : ORDINARY_MTIME_MAX;
file_timestamp_sprintf (buf, ts);
OSS (error, NILF,
_("%s: Timestamp out of range; substituting %s"), f, buf);
}
return ts;
}
/* Return the current time as a file timestamp, setting *RESOLUTION to
its resolution. */
FILE_TIMESTAMP
file_timestamp_now (int *resolution)
{
int r;
time_t s;
int ns;
/* Don't bother with high-resolution clocks if file timestamps have
only one-second resolution. The code below should work, but it's
not worth the hassle of debugging it on hosts where it fails. */
#if FILE_TIMESTAMP_HI_RES
# if HAVE_CLOCK_GETTIME && defined CLOCK_REALTIME
{
struct timespec timespec;
if (clock_gettime (CLOCK_REALTIME, ×pec) == 0)
{
r = 1;
s = timespec.tv_sec;
ns = timespec.tv_nsec;
goto got_time;
}
}
# endif
# if HAVE_GETTIMEOFDAY
{
struct timeval timeval;
if (gettimeofday (&timeval, 0) == 0)
{
r = 1000;
s = timeval.tv_sec;
ns = timeval.tv_usec * 1000;
goto got_time;
}
}
# endif
#endif
r = 1000000000;
s = time ((time_t *) 0);
ns = 0;
#if FILE_TIMESTAMP_HI_RES
got_time:
#endif
*resolution = r;
return file_timestamp_cons (0, s, ns);
}
/* Place into the buffer P a printable representation of the file
timestamp TS. */
void
file_timestamp_sprintf (char *p, FILE_TIMESTAMP ts)
{
time_t t = FILE_TIMESTAMP_S (ts);
struct tm *tm = localtime (&t);
if (tm)
sprintf (p, "%04d-%02d-%02d %02d:%02d:%02d",
tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec);
else if (t < 0)
sprintf (p, "%ld", (long) t);
else
sprintf (p, "%lu", (unsigned long) t);
p += strlen (p);
/* Append nanoseconds as a fraction, but remove trailing zeros. We don't
know the actual timestamp resolution, since clock_getres applies only to
local times, whereas this timestamp might come from a remote filesystem.
So removing trailing zeros is the best guess that we can do. */
sprintf (p, ".%09d", FILE_TIMESTAMP_NS (ts));
p += strlen (p) - 1;
while (*p == '0')
p--;
p += *p != '.';
*p = '\0';
}
/* Print the data base of files. */
void
print_prereqs (const struct dep *deps)
{
const struct dep *ood = 0;
/* Print all normal dependencies; note any order-only deps. */
for (; deps != 0; deps = deps->next)
if (! deps->ignore_mtime)
printf (" %s", dep_name (deps));
else if (! ood)
ood = deps;
/* Print order-only deps, if we have any. */
if (ood)
{
printf (" | %s", dep_name (ood));
for (ood = ood->next; ood != 0; ood = ood->next)
if (ood->ignore_mtime)
printf (" %s", dep_name (ood));
}
putchar ('\n');
}
static void
print_file (const void *item)
{
const struct file *f = item;
/* If we're not using builtin targets, don't show them.
Ideally we'd be able to delete them altogether but currently there's no
facility to ever delete a file once it's been added. */
if (no_builtin_rules_flag && f->builtin)
return;
putchar ('\n');
if (f->cmds && f->cmds->recipe_prefix != cmd_prefix)
{
fputs (".RECIPEPREFIX = ", stdout);
cmd_prefix = f->cmds->recipe_prefix;
if (cmd_prefix != RECIPEPREFIX_DEFAULT)
putchar (cmd_prefix);
putchar ('\n');
}
if (f->variables != 0)
print_target_variables (f);
if (!f->is_target)
puts (_("# Not a target:"));
#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
if (f->multi_head)
{
const struct file *f2;
if (f->multi_head == f)
{
int multi_maybe = -1;
assert (!f->multi_maybe);
assert (!f->double_colon);
printf ("%s", f->name);
for (f2 = f->multi_next; f2 != 0; f2 = f2->multi_next)
{
printf (" %s%s", f2->multi_maybe != multi_maybe
? f2->multi_maybe ? "+| " : "+ " : "",
f2->name);
multi_maybe = f2->multi_maybe;
}
if (f->deps)
printf (": \\\n\t");
else
putchar (':');
}
else
printf ("%s:%s", f->name, f->double_colon ? ":" : "");
}
else
#endif
printf ("%s:%s", f->name, f->double_colon ? ":" : "");
print_prereqs (f->deps);
#ifdef CONFIG_WITH_EXPLICIT_MULTITARGET
if (f->multi_head && f->multi_head != f)
{
const struct file *f2;
fputs (_("# In multi target list:"), stdout);
for (f2 = f->multi_head; f2 != 0; f2 = f2->multi_next)
printf (" %s%s", f2->name, f == f2 ? "(*)" : "");
putchar ('\n');
if (f->multi_maybe)
puts (_("# File is an optional multi target member."));
}
#endif
if (f->precious)
puts (_("# Precious file (prerequisite of .PRECIOUS)."));
if (f->phony)
puts (_("# Phony target (prerequisite of .PHONY)."));
if (f->cmd_target)
puts (_("# Command line target."));
if (f->dontcare)
puts (_("# A default, MAKEFILES, or -include/sinclude makefile."));
#if defined (CONFIG_WITH_COMPILER) || defined (CONFIG_WITH_MAKE_STATS)
if (f->eval_count > 0)
{
# ifdef CONFIG_WITH_COMPILER
if (f->evalprog)
printf (_("# Makefile evaluated %u times - compiled\n"), f->eval_count);
else
# endif
printf (_("# Makefile evaluated %u times\n"), f->eval_count);
}
#endif
if (f->builtin)
puts (_("# Builtin rule"));
puts (f->tried_implicit
? _("# Implicit rule search has been done.")
: _("# Implicit rule search has not been done."));
if (f->stem != 0)
printf (_("# Implicit/static pattern stem: '%s'\n"), f->stem);
if (f->intermediate)
puts (_("# File is an intermediate prerequisite."));
if (f->also_make != 0)
{
const struct dep *d;
fputs (_("# Also makes:"), stdout);
for (d = f->also_make; d != 0; d = d->next)
printf (" %s", dep_name (d));
putchar ('\n');
}
if (f->last_mtime == UNKNOWN_MTIME)
puts (_("# Modification time never checked."));
else if (f->last_mtime == NONEXISTENT_MTIME)
puts (_("# File does not exist."));
else if (f->last_mtime == OLD_MTIME)
puts (_("# File is very old."));
else
{
char buf[FILE_TIMESTAMP_PRINT_LEN_BOUND + 1];
file_timestamp_sprintf (buf, f->last_mtime);
printf (_("# Last modified %s\n"), buf);
}
puts (f->updated
? _("# File has been updated.") : _("# File has not been updated."));
switch (f->command_state)
{
case cs_running:
puts (_("# Recipe currently running (THIS IS A BUG)."));
break;
case cs_deps_running:
puts (_("# Dependencies recipe running (THIS IS A BUG)."));
break;
case cs_not_started:
case cs_finished:
switch (f->update_status)
{
case us_none:
break;
case us_success:
puts (_("# Successfully updated."));
break;
case us_question:
assert (question_flag);
puts (_("# Needs to be updated (-q is set)."));
break;
case us_failed:
puts (_("# Failed to be updated."));
break;
}
break;
default:
puts (_("# Invalid value in 'command_state' member!"));
fflush (stdout);
fflush (stderr);
abort ();
}
if (f->variables != 0)
print_file_variables (f);
if (f->cmds != 0)
print_commands (f->cmds);
if (f->prev)
print_file ((const void *) f->prev);
}
void
print_file_data_base (void)
{
puts (_("\n# Files"));
hash_map (&files, print_file);
fputs (_("\n# files hash-table stats:\n# "), stdout);
hash_print_stats (&files, stdout);
}
#ifdef CONFIG_WITH_PRINT_STATS_SWITCH
void
print_file_stats (void)
{
fputs (_("\n# files hash-table stats:\n# "), stdout);
hash_print_stats (&files, stdout);
fputs ("\n", stdout);
}
#endif
/* Verify the integrity of the data base of files. */
#define VERIFY_CACHED(_p,_n) \
do{ \
if (_p->_n && _p->_n[0] && !strcache_iscached (_p->_n)) \
error (NULL, strlen (_p->name) + CSTRLEN (# _n) + strlen (_p->_n), \
_("%s: Field '%s' not cached: %s"), _p->name, # _n, _p->_n); \
}while(0)
static void
verify_file (const void *item)
{
const struct file *f = item;
const struct dep *d;
VERIFY_CACHED (f, name);
VERIFY_CACHED (f, hname);
VERIFY_CACHED (f, vpath);
VERIFY_CACHED (f, stem);
/* Check the deps. */
for (d = f->deps; d != 0; d = d->next)
{
if (! d->need_2nd_expansion)
VERIFY_CACHED (d, name);
VERIFY_CACHED (d, stem);
}
}
void
verify_file_data_base (void)
{
hash_map (&files, verify_file);
}
#define EXPANSION_INCREMENT(_l) ((((_l) / 500) + 1) * 500)
char *
build_target_list (char *value)
{
static unsigned long last_targ_count = 0;
if (files.ht_fill != last_targ_count)
{
unsigned long max = EXPANSION_INCREMENT (strlen (value));
unsigned long len;
char *p;
struct file **fp = (struct file **) files.ht_vec;
struct file **end = &fp[files.ht_size];
/* Make sure we have at least MAX bytes in the allocated buffer. */
value = xrealloc (value, max);
p = value;
len = 0;
for (; fp < end; ++fp)
if (!HASH_VACANT (*fp) && (*fp)->is_target)
{
struct file *f = *fp;
int l = strlen (f->name);
len += l + 1;
if (len > max)
{
unsigned long off = p - value;
max += EXPANSION_INCREMENT (l + 1);
value = xrealloc (value, max);
p = &value[off];
}
memcpy (p, f->name, l);
p += l;
*(p++) = ' ';
}
*(p-1) = '\0';
last_targ_count = files.ht_fill;
}
return value;
}
void
init_hash_files (void)
{
#ifndef CONFIG_WITH_STRCACHE2
# ifdef KMK
hash_init (&files, /*65535*/ 32755, file_hash_1, file_hash_2, file_hash_cmp);
# else
hash_init (&files, 1000, file_hash_1, file_hash_2, file_hash_cmp);
# endif
#else /* CONFIG_WITH_STRCACHE2 */
# ifdef KMK
hash_init_strcached (&files, 32755, &file_strcache,
offsetof (struct file, hname));
# else
hash_init_strcached (&files, 1000, &file_strcache,
offsetof (struct file, hname));
# endif
#endif /* CONFIG_WITH_STRCACHE2 */
}
/* EOF */