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Add support for --ignore-unresolved-symbol

This commit is contained in:
matt 2008-04-03 15:40:17 +00:00
parent 16304febf2
commit 2c2b152b21
4 changed files with 41 additions and 9 deletions
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4
gnu/dist/binutils/include/bfdlink.h vendored
View File

@ -369,6 +369,10 @@ struct bfd_link_info
option). If this is NULL, no symbols are being wrapped. */
struct bfd_hash_table *wrap_hash;
/* Hash table of symbols which may be left unresolved during
a link. If this is NULL, no symbols can be left unresolved. */
struct bfd_hash_table *ignore_hash;
/* The list of input BFD's involved in the link. These are chained
together via the link_next field. */
bfd *input_bfds;

35
gnu/dist/binutils/ld/ldmain.c vendored
View File

@ -297,6 +297,7 @@ main (int argc, char **argv)
link_info.keep_hash = NULL;
link_info.notice_hash = NULL;
link_info.wrap_hash = NULL;
link_info.ignore_hash = NULL;
link_info.input_bfds = NULL;
link_info.create_object_symbols_section = NULL;
link_info.gc_sym_list = NULL;
@ -781,6 +782,22 @@ add_ysym (const char *name)
einfo (_("%P%F: bfd_hash_lookup failed: %E\n"));
}
void
add_ignoresym (const char *name)
{
if (link_info.ignore_hash == NULL)
{
link_info.ignore_hash = xmalloc (sizeof (struct bfd_hash_table));
if (! bfd_hash_table_init_n (link_info.ignore_hash,
bfd_hash_newfunc,
61))
einfo (_("%P%F: bfd_hash_table_init failed: %E\n"));
}
if (bfd_hash_lookup (link_info.ignore_hash, name, TRUE, TRUE) == NULL)
einfo (_("%P%F: bfd_hash_lookup failed: %E\n"));
}
/* Record a symbol to be wrapped, from the --wrap option. */
void
@ -1300,7 +1317,7 @@ warning_find_reloc (bfd *abfd, asection *sec, void *iarg)
/* This is called when an undefined symbol is found. */
static bfd_boolean
undefined_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
undefined_symbol (struct bfd_link_info *info,
const char *name,
bfd *abfd,
asection *section,
@ -1312,22 +1329,24 @@ undefined_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
#define MAX_ERRORS_IN_A_ROW 5
if (info->ignore_hash != NULL
&& bfd_hash_lookup (info->ignore_hash, name, FALSE, FALSE) != NULL)
return TRUE;
if (config.warn_once)
{
static struct bfd_hash_table *hash;
/* Only warn once about a particular undefined symbol. */
if (hash == NULL)
if (info->ignore_hash == NULL)
{
hash = xmalloc (sizeof (struct bfd_hash_table));
if (! bfd_hash_table_init (hash, bfd_hash_newfunc))
info->ignore_hash = xmalloc (sizeof (struct bfd_hash_table));
if (! bfd_hash_table_init (info->ignore_hash, bfd_hash_newfunc))
einfo (_("%F%P: bfd_hash_table_init failed: %E\n"));
}
if (bfd_hash_lookup (hash, name, FALSE, FALSE) != NULL)
if (bfd_hash_lookup (info->ignore_hash, name, FALSE, FALSE) != NULL)
return TRUE;
if (bfd_hash_lookup (hash, name, TRUE, TRUE) == NULL)
if (bfd_hash_lookup (info->ignore_hash, name, TRUE, TRUE) == NULL)
einfo (_("%F%P: bfd_hash_lookup failed: %E\n"));
}

1
gnu/dist/binutils/ld/ldmain.h vendored
View File

@ -42,6 +42,7 @@ extern int overflow_cutoff_limit;
extern void add_ysym (const char *);
extern void add_wrap (const char *);
extern void add_ignoresym (const char *);
extern void add_keepsyms_file (const char *);
#endif

10
gnu/dist/binutils/ld/lexsup.c vendored
View File

@ -152,7 +152,8 @@ enum option_values
OPTION_WARN_UNRESOLVED_SYMBOLS,
OPTION_ERROR_UNRESOLVED_SYMBOLS,
OPTION_WARN_SHARED_TEXTREL,
OPTION_REDUCE_MEMORY_OVERHEADS
OPTION_REDUCE_MEMORY_OVERHEADS,
OPTION_IGNORE_UNRESOLVED_SYMBOL
};
/* The long options. This structure is used for both the option
@ -520,6 +521,10 @@ static const struct ld_option ld_options[] =
'\0', NULL, NULL, TWO_DASHES }, /* NetBSD. */
{ {"wrap", required_argument, NULL, OPTION_WRAP},
'\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
{ {"ignore-unresolved-symbol", required_argument, NULL,
OPTION_IGNORE_UNRESOLVED_SYMBOL},
'\0', N_("SYMBOL"),
N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES },
};
#define OPTION_COUNT ARRAY_SIZE (ld_options)
@ -1262,6 +1267,9 @@ parse_args (unsigned argc, char **argv)
case OPTION_WRAP:
add_wrap (optarg);
break;
case OPTION_IGNORE_UNRESOLVED_SYMBOL:
add_ignoresym (optarg);
break;
case OPTION_DISCARD_NONE:
link_info.discard = discard_none;
break;