634 lines
13 KiB
C
634 lines
13 KiB
C
/* Scan linker error messages for missing template instantiations and provide
|
||
them.
|
||
|
||
Copyright (C) 1995, 1998 Free Software Foundation, Inc.
|
||
Contributed by Jason Merrill (jason@cygnus.com).
|
||
|
||
This file is part of GNU CC.
|
||
|
||
GNU CC 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 2, or (at your option)
|
||
any later version.
|
||
|
||
GNU CC is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with GNU CC; see the file COPYING. If not, write to
|
||
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
||
#include "config.h"
|
||
#include "system.h"
|
||
#include "hash.h"
|
||
#include "demangle.h"
|
||
#include "toplev.h"
|
||
|
||
#define MAX_ITERATIONS 17
|
||
|
||
/* Obstack allocation and deallocation routines. */
|
||
#define obstack_chunk_alloc xmalloc
|
||
#define obstack_chunk_free free
|
||
|
||
extern char * xmalloc PARAMS((unsigned));
|
||
|
||
/* Defined in collect2.c. */
|
||
extern int vflag, debug;
|
||
extern char *ldout;
|
||
extern char *c_file_name;
|
||
extern struct obstack temporary_obstack;
|
||
extern struct obstack permanent_obstack;
|
||
extern char * temporary_firstobj;
|
||
|
||
/* Defined in the automatically-generated underscore.c. */
|
||
extern int prepends_underscore;
|
||
|
||
static int tlink_verbose;
|
||
|
||
/* Hash table code. */
|
||
|
||
typedef struct symbol_hash_entry
|
||
{
|
||
struct hash_entry root;
|
||
struct file_hash_entry *file;
|
||
int chosen;
|
||
int tweaking;
|
||
int tweaked;
|
||
} symbol;
|
||
|
||
typedef struct file_hash_entry
|
||
{
|
||
struct hash_entry root;
|
||
const char *args;
|
||
const char *dir;
|
||
const char *main;
|
||
int tweaking;
|
||
} file;
|
||
|
||
typedef struct demangled_hash_entry
|
||
{
|
||
struct hash_entry root;
|
||
const char *mangled;
|
||
} demangled;
|
||
|
||
static struct hash_table symbol_table;
|
||
|
||
static struct hash_entry *
|
||
symbol_hash_newfunc (entry, table, string)
|
||
struct hash_entry *entry;
|
||
struct hash_table *table;
|
||
const char *string;
|
||
{
|
||
struct symbol_hash_entry *ret = (struct symbol_hash_entry *) entry;
|
||
if (ret == NULL)
|
||
{
|
||
ret = ((struct symbol_hash_entry *)
|
||
hash_allocate (table, sizeof (struct symbol_hash_entry)));
|
||
if (ret == NULL)
|
||
return NULL;
|
||
}
|
||
ret = ((struct symbol_hash_entry *)
|
||
hash_newfunc ((struct hash_entry *) ret, table, string));
|
||
ret->file = NULL;
|
||
ret->chosen = 0;
|
||
ret->tweaking = 0;
|
||
ret->tweaked = 0;
|
||
return (struct hash_entry *) ret;
|
||
}
|
||
|
||
static struct symbol_hash_entry *
|
||
symbol_hash_lookup (string, create)
|
||
const char *string;
|
||
boolean create;
|
||
{
|
||
return ((struct symbol_hash_entry *)
|
||
hash_lookup (&symbol_table, string, create, true));
|
||
}
|
||
|
||
static struct hash_table file_table;
|
||
|
||
static struct hash_entry *
|
||
file_hash_newfunc (entry, table, string)
|
||
struct hash_entry *entry;
|
||
struct hash_table *table;
|
||
const char *string;
|
||
{
|
||
struct file_hash_entry *ret = (struct file_hash_entry *) entry;
|
||
if (ret == NULL)
|
||
{
|
||
ret = ((struct file_hash_entry *)
|
||
hash_allocate (table, sizeof (struct file_hash_entry)));
|
||
if (ret == NULL)
|
||
return NULL;
|
||
}
|
||
ret = ((struct file_hash_entry *)
|
||
hash_newfunc ((struct hash_entry *) ret, table, string));
|
||
ret->args = NULL;
|
||
ret->dir = NULL;
|
||
ret->main = NULL;
|
||
ret->tweaking = 0;
|
||
return (struct hash_entry *) ret;
|
||
}
|
||
|
||
static struct file_hash_entry *
|
||
file_hash_lookup (string)
|
||
const char *string;
|
||
{
|
||
return ((struct file_hash_entry *)
|
||
hash_lookup (&file_table, string, true, true));
|
||
}
|
||
|
||
static struct hash_table demangled_table;
|
||
|
||
static struct hash_entry *
|
||
demangled_hash_newfunc (entry, table, string)
|
||
struct hash_entry *entry;
|
||
struct hash_table *table;
|
||
const char *string;
|
||
{
|
||
struct demangled_hash_entry *ret = (struct demangled_hash_entry *) entry;
|
||
if (ret == NULL)
|
||
{
|
||
ret = ((struct demangled_hash_entry *)
|
||
hash_allocate (table, sizeof (struct demangled_hash_entry)));
|
||
if (ret == NULL)
|
||
return NULL;
|
||
}
|
||
ret = ((struct demangled_hash_entry *)
|
||
hash_newfunc ((struct hash_entry *) ret, table, string));
|
||
ret->mangled = NULL;
|
||
return (struct hash_entry *) ret;
|
||
}
|
||
|
||
static struct demangled_hash_entry *
|
||
demangled_hash_lookup (string, create)
|
||
const char *string;
|
||
boolean create;
|
||
{
|
||
return ((struct demangled_hash_entry *)
|
||
hash_lookup (&demangled_table, string, create, true));
|
||
}
|
||
|
||
/* Stack code. */
|
||
|
||
struct symbol_stack_entry
|
||
{
|
||
symbol *value;
|
||
struct symbol_stack_entry *next;
|
||
};
|
||
struct obstack symbol_stack_obstack;
|
||
struct symbol_stack_entry *symbol_stack;
|
||
|
||
struct file_stack_entry
|
||
{
|
||
file *value;
|
||
struct file_stack_entry *next;
|
||
};
|
||
struct obstack file_stack_obstack;
|
||
struct file_stack_entry *file_stack;
|
||
|
||
static void
|
||
symbol_push (p)
|
||
symbol *p;
|
||
{
|
||
struct symbol_stack_entry *ep = (struct symbol_stack_entry *) obstack_alloc
|
||
(&symbol_stack_obstack, sizeof (struct symbol_stack_entry));
|
||
ep->value = p;
|
||
ep->next = symbol_stack;
|
||
symbol_stack = ep;
|
||
}
|
||
|
||
static symbol *
|
||
symbol_pop ()
|
||
{
|
||
struct symbol_stack_entry *ep = symbol_stack;
|
||
symbol *p;
|
||
if (ep == NULL)
|
||
return NULL;
|
||
p = ep->value;
|
||
symbol_stack = ep->next;
|
||
obstack_free (&symbol_stack_obstack, ep);
|
||
return p;
|
||
}
|
||
|
||
static void
|
||
file_push (p)
|
||
file *p;
|
||
{
|
||
struct file_stack_entry *ep;
|
||
|
||
if (p->tweaking)
|
||
return;
|
||
|
||
ep = (struct file_stack_entry *) obstack_alloc
|
||
(&file_stack_obstack, sizeof (struct file_stack_entry));
|
||
ep->value = p;
|
||
ep->next = file_stack;
|
||
file_stack = ep;
|
||
p->tweaking = 1;
|
||
}
|
||
|
||
static file *
|
||
file_pop ()
|
||
{
|
||
struct file_stack_entry *ep = file_stack;
|
||
file *p;
|
||
if (ep == NULL)
|
||
return NULL;
|
||
p = ep->value;
|
||
file_stack = ep->next;
|
||
obstack_free (&file_stack_obstack, ep);
|
||
p->tweaking = 0;
|
||
return p;
|
||
}
|
||
|
||
/* Other machinery. */
|
||
|
||
static void
|
||
tlink_init ()
|
||
{
|
||
char *p;
|
||
|
||
hash_table_init (&symbol_table, symbol_hash_newfunc);
|
||
hash_table_init (&file_table, file_hash_newfunc);
|
||
hash_table_init (&demangled_table, demangled_hash_newfunc);
|
||
obstack_begin (&symbol_stack_obstack, 0);
|
||
obstack_begin (&file_stack_obstack, 0);
|
||
|
||
p = getenv ("TLINK_VERBOSE");
|
||
if (p)
|
||
tlink_verbose = atoi (p);
|
||
else
|
||
{
|
||
tlink_verbose = 1;
|
||
if (vflag)
|
||
tlink_verbose = 2;
|
||
if (debug)
|
||
tlink_verbose = 3;
|
||
}
|
||
}
|
||
|
||
static int
|
||
tlink_execute (prog, argv, redir)
|
||
char *prog;
|
||
char **argv;
|
||
char *redir;
|
||
{
|
||
collect_execute (prog, argv, redir);
|
||
return collect_wait (prog);
|
||
}
|
||
|
||
static char *
|
||
frob_extension (s, ext)
|
||
char *s, *ext;
|
||
{
|
||
char *p = rindex (s, '/');
|
||
if (! p)
|
||
p = s;
|
||
p = rindex (p, '.');
|
||
if (! p)
|
||
p = s + strlen (s);
|
||
|
||
obstack_grow (&temporary_obstack, s, p - s);
|
||
return obstack_copy0 (&temporary_obstack, ext, strlen (ext));
|
||
}
|
||
|
||
static char *
|
||
obstack_fgets (stream, ob)
|
||
FILE *stream;
|
||
struct obstack *ob;
|
||
{
|
||
int c;
|
||
while ((c = getc (stream)) != EOF && c != '\n')
|
||
obstack_1grow (ob, c);
|
||
if (obstack_object_size (ob) == 0)
|
||
return NULL;
|
||
obstack_1grow (ob, '\0');
|
||
return obstack_finish (ob);
|
||
}
|
||
|
||
static char *
|
||
tfgets (stream)
|
||
FILE *stream;
|
||
{
|
||
return obstack_fgets (stream, &temporary_obstack);
|
||
}
|
||
|
||
static char *
|
||
pfgets (stream)
|
||
FILE *stream;
|
||
{
|
||
return obstack_fgets (stream, &permanent_obstack);
|
||
}
|
||
|
||
/* Real tlink code. */
|
||
|
||
static void
|
||
freadsym (stream, f, chosen)
|
||
FILE *stream;
|
||
file *f;
|
||
int chosen;
|
||
{
|
||
symbol *sym;
|
||
|
||
{
|
||
char *name = tfgets (stream);
|
||
sym = symbol_hash_lookup (name, true);
|
||
}
|
||
|
||
if (sym->file == NULL)
|
||
{
|
||
symbol_push (sym);
|
||
sym->file = f;
|
||
sym->chosen = chosen;
|
||
}
|
||
else if (chosen)
|
||
{
|
||
if (sym->chosen && sym->file != f)
|
||
{
|
||
if (sym->chosen == 1)
|
||
file_push (sym->file);
|
||
else
|
||
{
|
||
file_push (f);
|
||
f = sym->file;
|
||
chosen = sym->chosen;
|
||
}
|
||
}
|
||
sym->file = f;
|
||
sym->chosen = chosen;
|
||
}
|
||
}
|
||
|
||
static void
|
||
read_repo_file (f)
|
||
file *f;
|
||
{
|
||
char c;
|
||
FILE *stream = fopen (f->root.string, "r");
|
||
|
||
if (tlink_verbose >= 2)
|
||
fprintf (stderr, "collect: reading %s\n", f->root.string);
|
||
|
||
while (fscanf (stream, "%c ", &c) == 1)
|
||
{
|
||
switch (c)
|
||
{
|
||
case 'A':
|
||
f->args = pfgets (stream);
|
||
break;
|
||
case 'D':
|
||
f->dir = pfgets (stream);
|
||
break;
|
||
case 'M':
|
||
f->main = pfgets (stream);
|
||
break;
|
||
case 'P':
|
||
freadsym (stream, f, 2);
|
||
break;
|
||
case 'C':
|
||
freadsym (stream, f, 1);
|
||
break;
|
||
case 'O':
|
||
freadsym (stream, f, 0);
|
||
break;
|
||
}
|
||
obstack_free (&temporary_obstack, temporary_firstobj);
|
||
}
|
||
fclose (stream);
|
||
if (f->args == NULL)
|
||
f->args = getenv ("COLLECT_GCC_OPTIONS");
|
||
if (f->dir == NULL)
|
||
f->dir = ".";
|
||
}
|
||
|
||
static void
|
||
maybe_tweak (line, f)
|
||
char *line;
|
||
file *f;
|
||
{
|
||
symbol *sym = symbol_hash_lookup (line + 2, false);
|
||
|
||
if ((sym->file == f && sym->tweaking)
|
||
|| (sym->file != f && line[0] == 'C'))
|
||
{
|
||
sym->tweaking = 0;
|
||
sym->tweaked = 1;
|
||
|
||
if (line[0] == 'O')
|
||
line[0] = 'C';
|
||
else
|
||
line[0] = 'O';
|
||
}
|
||
}
|
||
|
||
static int
|
||
recompile_files ()
|
||
{
|
||
file *f;
|
||
|
||
while ((f = file_pop ()) != NULL)
|
||
{
|
||
char *line, *command;
|
||
FILE *stream = fopen (f->root.string, "r");
|
||
char *outname = frob_extension (f->root.string, ".rnw");
|
||
FILE *output = fopen (outname, "w");
|
||
|
||
while ((line = tfgets (stream)) != NULL)
|
||
{
|
||
switch (line[0])
|
||
{
|
||
case 'C':
|
||
case 'O':
|
||
maybe_tweak (line, f);
|
||
}
|
||
fprintf (output, "%s\n", line);
|
||
}
|
||
fclose (stream);
|
||
fclose (output);
|
||
rename (outname, f->root.string);
|
||
|
||
obstack_grow (&temporary_obstack, "cd ", 3);
|
||
obstack_grow (&temporary_obstack, f->dir, strlen (f->dir));
|
||
obstack_grow (&temporary_obstack, "; ", 2);
|
||
obstack_grow (&temporary_obstack, c_file_name, strlen (c_file_name));
|
||
obstack_1grow (&temporary_obstack, ' ');
|
||
obstack_grow (&temporary_obstack, f->args, strlen (f->args));
|
||
obstack_1grow (&temporary_obstack, ' ');
|
||
command = obstack_copy0 (&temporary_obstack, f->main, strlen (f->main));
|
||
|
||
if (tlink_verbose)
|
||
fprintf (stderr, "collect: recompiling %s\n", f->main);
|
||
if (tlink_verbose >= 3)
|
||
fprintf (stderr, "%s\n", command);
|
||
|
||
if (system (command) != 0)
|
||
return 0;
|
||
|
||
read_repo_file (f);
|
||
|
||
obstack_free (&temporary_obstack, temporary_firstobj);
|
||
}
|
||
return 1;
|
||
}
|
||
|
||
static int
|
||
read_repo_files (object_lst)
|
||
char **object_lst;
|
||
{
|
||
char **object = object_lst;
|
||
|
||
for (; *object; object++)
|
||
{
|
||
char *p = frob_extension (*object, ".rpo");
|
||
file *f;
|
||
|
||
if (! file_exists (p))
|
||
continue;
|
||
|
||
f = file_hash_lookup (p);
|
||
|
||
read_repo_file (f);
|
||
}
|
||
|
||
if (file_stack != NULL && ! recompile_files ())
|
||
return 0;
|
||
|
||
return (symbol_stack != NULL);
|
||
}
|
||
|
||
static void
|
||
demangle_new_symbols ()
|
||
{
|
||
symbol *sym;
|
||
|
||
while ((sym = symbol_pop ()) != NULL)
|
||
{
|
||
demangled *dem;
|
||
char *p = cplus_demangle (sym->root.string, DMGL_PARAMS | DMGL_ANSI);
|
||
|
||
if (! p)
|
||
continue;
|
||
|
||
dem = demangled_hash_lookup (p, true);
|
||
dem->mangled = sym->root.string;
|
||
}
|
||
}
|
||
|
||
static int
|
||
scan_linker_output (fname)
|
||
char *fname;
|
||
{
|
||
FILE *stream = fopen (fname, "r");
|
||
char *line;
|
||
|
||
while ((line = tfgets (stream)) != NULL)
|
||
{
|
||
char *p = line, *q;
|
||
symbol *sym;
|
||
int end;
|
||
|
||
while (*p && ISSPACE (*p))
|
||
++p;
|
||
|
||
if (! *p)
|
||
continue;
|
||
|
||
for (q = p; *q && ! ISSPACE (*q); ++q)
|
||
;
|
||
|
||
/* Try the first word on the line. */
|
||
if (*p == '.')
|
||
++p;
|
||
if (*p == '_' && prepends_underscore)
|
||
++p;
|
||
|
||
end = ! *q;
|
||
*q = 0;
|
||
sym = symbol_hash_lookup (p, false);
|
||
|
||
if (! sym && ! end)
|
||
/* Try a mangled name in `quotes'. */
|
||
{
|
||
demangled *dem = 0;
|
||
p = index (q+1, '`');
|
||
q = 0;
|
||
|
||
#define MUL "multiple definition of "
|
||
#define UND "undefined reference to "
|
||
|
||
if (p && (p - line > sizeof (MUL)))
|
||
{
|
||
char *beg = p - sizeof (MUL) + 1;
|
||
*p = 0;
|
||
if (!strcmp (beg, MUL) || !strcmp (beg, UND))
|
||
p++, q = index (p, '\'');
|
||
}
|
||
if (q)
|
||
*q = 0, dem = demangled_hash_lookup (p, false);
|
||
if (dem)
|
||
sym = symbol_hash_lookup (dem->mangled, false);
|
||
}
|
||
|
||
if (sym && sym->tweaked)
|
||
{
|
||
fclose (stream);
|
||
return 0;
|
||
}
|
||
if (sym && !sym->tweaking)
|
||
{
|
||
if (tlink_verbose >= 2)
|
||
fprintf (stderr, "collect: tweaking %s in %s\n",
|
||
sym->root.string, sym->file->root.string);
|
||
sym->tweaking = 1;
|
||
file_push (sym->file);
|
||
}
|
||
|
||
obstack_free (&temporary_obstack, temporary_firstobj);
|
||
}
|
||
|
||
fclose (stream);
|
||
return (file_stack != NULL);
|
||
}
|
||
|
||
void
|
||
do_tlink (ld_argv, object_lst)
|
||
char **ld_argv, **object_lst;
|
||
{
|
||
int exit = tlink_execute ("ld", ld_argv, ldout);
|
||
|
||
tlink_init ();
|
||
|
||
if (exit)
|
||
{
|
||
int i = 0;
|
||
|
||
/* Until collect does a better job of figuring out which are object
|
||
files, assume that everything on the command line could be. */
|
||
if (read_repo_files (ld_argv))
|
||
while (exit && i++ < MAX_ITERATIONS)
|
||
{
|
||
if (tlink_verbose >= 3)
|
||
dump_file (ldout);
|
||
demangle_new_symbols ();
|
||
if (! scan_linker_output (ldout))
|
||
break;
|
||
if (! recompile_files ())
|
||
break;
|
||
if (tlink_verbose)
|
||
fprintf (stderr, "collect: relinking\n");
|
||
exit = tlink_execute ("ld", ld_argv, ldout);
|
||
}
|
||
}
|
||
|
||
dump_file (ldout);
|
||
unlink (ldout);
|
||
if (exit)
|
||
{
|
||
error ("ld returned %d exit status", exit);
|
||
collect_exit (exit);
|
||
}
|
||
}
|