bfd/
2004-07-19 H.J. Lu <hongjiu.lu@intel.com>
* bfd-in.h (dynamic_lib_link_class): Add DYN_NO_ADD_NEEDED and
DYN_NO_NEEDED.
(bfd_elf_get_dyn_lib_class): New prototype.
* elf.c (bfd_elf_get_dyn_lib_class): New function.
* elflink.c (elf_link_add_object_symbols): Check DYN_AS_NEEDED,
DYN_DT_NEEDED and DYN_NO_NEEDED bits to see if a DT_NEEDED
entry is needed. Issue an error if a DT_NEEDED entry is needed
for a file marked DYN_NO_NEEDED.
(elf_link_check_versioned_symbol): Check the DYN_DT_NEEDED bit
for DT_NEEDED tags.
* bfd-in2.h: Regenerated.
ld/
2004-07-19 H.J. Lu <hongjiu.lu@intel.com>
* emultempl/elf32.em (gld${EMULATION_NAME}_load_symbols): Also
check the add_needed field.
(dt_needed): New struct.
(gld${EMULATION_NAME}_try_needed): Change the first argument
to a pointer to struct dt_needed. Check the DYN_NO_ADD_NEEDED
bit in the file where the DT_NEEDED entry comes from.
(gld${EMULATION_NAME}_search_needed): Change the second
argument to a pointer to struct dt_needed.
(gld${EMULATION_NAME}_check_ld_so_conf): Updated.
(gld${EMULATION_NAME}_after_open): Likewise.
* ld.texinfo: Add --add-needed document.
* ldlang.c (new_afile): Set p->add_needed.
* ldlang.h (lang_input_statement_type): Add add_needed field.
* ldmain.h (add_needed): Declare.
* ldmain.c (add_needed): New global var.
* lexsup.c (option_values): Add OPTION_ADD_NEEDED and
OPTION_NO_ADD_NEEDED.
(ld_options): Likewise.
(parse_args): Handle them.
This commit is contained in:
H.J. Lu
parent
756d8c7093
commit
e56f61be75
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@ -1,3 +1,19 @@
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2004-07-19 H.J. Lu <hongjiu.lu@intel.com>
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* bfd-in.h (dynamic_lib_link_class): Add DYN_NO_ADD_NEEDED and
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DYN_NO_NEEDED.
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(bfd_elf_get_dyn_lib_class): New prototype.
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* elf.c (bfd_elf_get_dyn_lib_class): New function.
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* elflink.c (elf_link_add_object_symbols): Check DYN_AS_NEEDED,
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DYN_DT_NEEDED and DYN_NO_NEEDED bits to see if a DT_NEEDED
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entry is needed. Issue an error if a DT_NEEDED entry is needed
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for a file marked DYN_NO_NEEDED.
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(elf_link_check_versioned_symbol): Check the DYN_DT_NEEDED bit
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for DT_NEEDED tags.
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* bfd-in2.h: Regenerated.
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2004-07-14 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
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* elflink.c (elf_section_complain_discarded): Don't complain in
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@ -625,7 +625,9 @@ struct bfd_link_needed_list
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enum dynamic_lib_link_class {
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DYN_NORMAL = 0,
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DYN_AS_NEEDED = 1,
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DYN_DT_NEEDED = 2
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DYN_DT_NEEDED = 2,
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DYN_NO_ADD_NEEDED = 4,
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DYN_NO_NEEDED = 8
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};
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extern bfd_boolean bfd_elf_record_link_assignment
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@ -643,6 +645,8 @@ extern const char *bfd_elf_get_dt_soname
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(bfd *);
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extern void bfd_elf_set_dyn_lib_class
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(bfd *, int);
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extern int bfd_elf_get_dyn_lib_class
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(bfd *);
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extern struct bfd_link_needed_list *bfd_elf_get_runpath_list
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(bfd *, struct bfd_link_info *);
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extern bfd_boolean bfd_elf_discard_info
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@ -632,7 +632,9 @@ struct bfd_link_needed_list
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enum dynamic_lib_link_class {
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DYN_NORMAL = 0,
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DYN_AS_NEEDED = 1,
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DYN_DT_NEEDED = 2
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DYN_DT_NEEDED = 2,
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DYN_NO_ADD_NEEDED = 4,
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DYN_NO_NEEDED = 8
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};
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extern bfd_boolean bfd_elf_record_link_assignment
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@ -650,6 +652,8 @@ extern const char *bfd_elf_get_dt_soname
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(bfd *);
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extern void bfd_elf_set_dyn_lib_class
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(bfd *, int);
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extern int bfd_elf_get_dyn_lib_class
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(bfd *);
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extern struct bfd_link_needed_list *bfd_elf_get_runpath_list
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(bfd *, struct bfd_link_info *);
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extern bfd_boolean bfd_elf_discard_info
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@ -1756,7 +1760,7 @@ enum bfd_architecture
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#define bfd_mach_avr5 5
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bfd_arch_cr16c, /* National Semiconductor CompactRISC. */
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#define bfd_mach_cr16c 1
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bfd_arch_crx, /* National Semiconductor CRX. */
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bfd_arch_crx, /* National Semiconductor CRX. */
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#define bfd_mach_crx 1
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bfd_arch_cris, /* Axis CRIS */
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bfd_arch_s390, /* IBM s390 */
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12
bfd/elf.c
12
bfd/elf.c
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@ -1514,6 +1514,18 @@ bfd_elf_set_dt_needed_name (bfd *abfd, const char *name)
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elf_dt_name (abfd) = name;
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}
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int
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bfd_elf_get_dyn_lib_class (bfd *abfd)
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{
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int lib_class;
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if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
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&& bfd_get_format (abfd) == bfd_object)
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lib_class = elf_dyn_lib_class (abfd);
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else
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lib_class = 0;
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return lib_class;
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}
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void
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bfd_elf_set_dyn_lib_class (bfd *abfd, int lib_class)
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{
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@ -3064,8 +3064,13 @@ elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
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/* If this dynamic lib was specified on the command line with
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--as-needed in effect, then we don't want to add a DT_NEEDED
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tag unless the lib is actually used. Similary for libs brought
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in by another lib's DT_NEEDED. */
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add_needed = elf_dyn_lib_class (abfd) == DYN_NORMAL;
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in by another lib's DT_NEEDED. When --no-add-needed is used
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on a dynamic lib, we don't want to add a DT_NEEDED entry for
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any dynamic library in DT_NEEDED tags in the dynamic lib at
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all. */
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add_needed = (elf_dyn_lib_class (abfd)
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& (DYN_AS_NEEDED | DYN_DT_NEEDED
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| DYN_NO_NEEDED)) == 0;
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s = bfd_get_section_by_name (abfd, ".dynamic");
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if (s != NULL)
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@ -3846,7 +3851,17 @@ elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
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/* A symbol from a library loaded via DT_NEEDED of some
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other library is referenced by a regular object.
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Add a DT_NEEDED entry for it. */
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Add a DT_NEEDED entry for it. Issue an error if
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--no-add-needed is used. */
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if ((elf_dyn_lib_class (abfd) & DYN_NO_NEEDED) != 0)
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{
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(*_bfd_error_handler)
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(_("%s: invalid DSO for symbol `%s' definition"),
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bfd_archive_filename (abfd), name);
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bfd_set_error (bfd_error_bad_value);
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goto error_free_vers;
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}
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add_needed = TRUE;
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ret = elf_add_dt_needed_tag (info, soname, add_needed);
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if (ret < 0)
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@ -5818,7 +5833,7 @@ elf_link_check_versioned_symbol (struct bfd_link_info *info,
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case bfd_link_hash_undefweak:
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abfd = h->root.u.undef.abfd;
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if ((abfd->flags & DYNAMIC) == 0
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|| elf_dyn_lib_class (abfd) != DYN_DT_NEEDED)
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|| (elf_dyn_lib_class (abfd) & DYN_DT_NEEDED) == 0)
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return FALSE;
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break;
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23
ld/ChangeLog
23
ld/ChangeLog
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@ -1,3 +1,26 @@
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2004-07-19 H.J. Lu <hongjiu.lu@intel.com>
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* emultempl/elf32.em (gld${EMULATION_NAME}_load_symbols): Also
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check the add_needed field.
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(dt_needed): New struct.
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(gld${EMULATION_NAME}_try_needed): Change the first argument
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to a pointer to struct dt_needed. Check the DYN_NO_ADD_NEEDED
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bit in the file where the DT_NEEDED entry comes from.
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(gld${EMULATION_NAME}_search_needed): Change the second
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argument to a pointer to struct dt_needed.
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(gld${EMULATION_NAME}_check_ld_so_conf): Updated.
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(gld${EMULATION_NAME}_after_open): Likewise.
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* ld.texinfo: Add --add-needed document.
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* ldlang.c (new_afile): Set p->add_needed.
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* ldlang.h (lang_input_statement_type): Add add_needed field.
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* ldmain.h (add_needed): Declare.
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* ldmain.c (add_needed): New global var.
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* lexsup.c (option_values): Add OPTION_ADD_NEEDED and
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OPTION_NO_ADD_NEEDED.
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(ld_options): Likewise.
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(parse_args): Handle them.
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2004-07-13 Christof Petig <christof@petig-baender.de>
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* emultempl/pe.em (make_import_fixup): Use bfd_get_32 to correct
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@ -96,14 +96,25 @@ cat >>e${EMULATION_NAME}.c <<EOF
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static bfd_boolean
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gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *entry)
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{
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if (!entry->as_needed
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|| (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) == 0)
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return FALSE;
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int class = 0;
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/* Tell the ELF linker that we don't want the output file to have a
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DT_NEEDED entry for this file, unless it is used to resolve
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references in a regular object. */
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bfd_elf_set_dyn_lib_class (entry->the_bfd, DYN_AS_NEEDED);
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if (entry->as_needed)
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class = DYN_AS_NEEDED;
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/* Tell the ELF linker that we don't want the output file to have a
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DT_NEEDED entry for any dynamic library in DT_NEEDED tags from
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this file at all. */
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if (!entry->add_needed)
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class |= DYN_NO_ADD_NEEDED;
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if (!class
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|| (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) == 0)
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return FALSE;
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bfd_elf_set_dyn_lib_class (entry->the_bfd, class);
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/* Continue on with normal load_symbols processing. */
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return FALSE;
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@ -242,16 +253,24 @@ gld${EMULATION_NAME}_stat_needed (lang_input_statement_type *s)
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global_needed->name, global_needed->by, soname);
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}
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struct dt_needed
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{
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bfd *by;
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const char *name;
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};
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/* This function is called for each possible name for a dynamic object
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named by a DT_NEEDED entry. The FORCE parameter indicates whether
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to skip the check for a conflicting version. */
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static bfd_boolean
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gld${EMULATION_NAME}_try_needed (const char *name, int force)
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gld${EMULATION_NAME}_try_needed (struct dt_needed *needed,
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int force)
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{
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bfd *abfd;
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const char *name = needed->name;
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const char *soname;
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int class;
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abfd = bfd_openr (name, bfd_get_target (output_bfd));
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if (abfd == NULL)
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@ -364,7 +383,17 @@ cat >>e${EMULATION_NAME}.c <<EOF
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/* Tell the ELF linker that we don't want the output file to have a
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DT_NEEDED entry for this file, unless it is used to resolve
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references in a regular object. */
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bfd_elf_set_dyn_lib_class (abfd, DYN_DT_NEEDED);
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class = DYN_DT_NEEDED;
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/* Tell the ELF linker that we don't want the output file to have a
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DT_NEEDED entry for this file at all if the entry is from a file
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with DYN_NO_ADD_NEEDED. */
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if (needed->by
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&& (bfd_elf_get_dyn_lib_class (needed->by)
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& DYN_NO_ADD_NEEDED) != 0)
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class |= DYN_NO_NEEDED | DYN_NO_ADD_NEEDED;
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bfd_elf_set_dyn_lib_class (abfd, class);
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/* Add this file into the symbol table. */
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if (! bfd_link_add_symbols (abfd, &link_info))
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@ -377,16 +406,23 @@ cat >>e${EMULATION_NAME}.c <<EOF
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/* Search for a needed file in a path. */
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static bfd_boolean
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gld${EMULATION_NAME}_search_needed (const char *path, const char *name, int force)
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gld${EMULATION_NAME}_search_needed (const char *path,
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struct dt_needed *n, int force)
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{
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const char *s;
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const char *name = n->name;
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size_t len;
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struct dt_needed needed;
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if (name[0] == '/')
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return gld${EMULATION_NAME}_try_needed (name, force);
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return gld${EMULATION_NAME}_try_needed (n, force);
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if (path == NULL || *path == '\0')
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return FALSE;
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needed.by = n->by;
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needed.name = n->name;
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len = strlen (name);
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while (1)
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{
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@ -407,7 +443,8 @@ gld${EMULATION_NAME}_search_needed (const char *path, const char *name, int forc
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}
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strcpy (sset, name);
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if (gld${EMULATION_NAME}_try_needed (filename, force))
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needed.name = filename;
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if (gld${EMULATION_NAME}_try_needed (&needed, force))
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return TRUE;
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free (filename);
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@ -474,6 +511,7 @@ gld${EMULATION_NAME}_check_ld_so_conf (const char *name, int force)
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{
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static bfd_boolean initialized;
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static char *ld_so_conf;
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struct dt_needed needed;
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if (! initialized)
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{
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@ -548,7 +586,10 @@ gld${EMULATION_NAME}_check_ld_so_conf (const char *name, int force)
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if (ld_so_conf == NULL)
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return FALSE;
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return gld${EMULATION_NAME}_search_needed (ld_so_conf, name, force);
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needed.by = NULL;
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needed.name = name;
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return gld${EMULATION_NAME}_search_needed (ld_so_conf, &needed, force);
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}
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EOF
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@ -631,6 +672,7 @@ gld${EMULATION_NAME}_after_open (void)
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for (l = needed; l != NULL; l = l->next)
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{
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struct bfd_link_needed_list *ll;
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struct dt_needed n, nn;
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int force;
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/* If we've already seen this file, skip it. */
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@ -647,6 +689,9 @@ gld${EMULATION_NAME}_after_open (void)
|
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if (global_found)
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continue;
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n.by = l->by;
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n.name = l->name;
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nn.by = l->by;
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if (trace_file_tries)
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info_msg (_("%s needed by %B\n"), l->name, l->by);
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|
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@ -676,13 +721,13 @@ fi
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cat >>e${EMULATION_NAME}.c <<EOF
|
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|
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if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
|
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l->name, force))
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&n, force))
|
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break;
|
||||
EOF
|
||||
if [ "x${USE_LIBPATH}" = xyes ] ; then
|
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cat >>e${EMULATION_NAME}.c <<EOF
|
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if (gld${EMULATION_NAME}_search_needed (command_line.rpath,
|
||||
l->name, force))
|
||||
&n, force))
|
||||
break;
|
||||
EOF
|
||||
fi
|
||||
|
|
@ -692,12 +737,12 @@ cat >>e${EMULATION_NAME}.c <<EOF
|
|||
&& command_line.rpath == NULL)
|
||||
{
|
||||
lib_path = (const char *) getenv ("LD_RUN_PATH");
|
||||
if (gld${EMULATION_NAME}_search_needed (lib_path, l->name,
|
||||
if (gld${EMULATION_NAME}_search_needed (lib_path, &n,
|
||||
force))
|
||||
break;
|
||||
}
|
||||
lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
|
||||
if (gld${EMULATION_NAME}_search_needed (lib_path, l->name, force))
|
||||
if (gld${EMULATION_NAME}_search_needed (lib_path, &n, force))
|
||||
break;
|
||||
EOF
|
||||
fi
|
||||
|
|
@ -710,7 +755,7 @@ cat >>e${EMULATION_NAME}.c <<EOF
|
|||
char *tmpname = gld${EMULATION_NAME}_add_sysroot (rp->name);
|
||||
found = (rp->by == l->by
|
||||
&& gld${EMULATION_NAME}_search_needed (tmpname,
|
||||
l->name,
|
||||
&n,
|
||||
force));
|
||||
free (tmpname);
|
||||
}
|
||||
|
|
@ -729,7 +774,8 @@ cat >>e${EMULATION_NAME}.c <<EOF
|
|||
continue;
|
||||
filename = (char *) xmalloc (strlen (search->name) + len + 2);
|
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sprintf (filename, "%s/%s", search->name, l->name);
|
||||
if (gld${EMULATION_NAME}_try_needed (filename, force))
|
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nn.name = filename;
|
||||
if (gld${EMULATION_NAME}_try_needed (&nn, force))
|
||||
break;
|
||||
free (filename);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -984,6 +984,18 @@ needed. @option{--as-needed} causes DT_NEEDED tags to only be emitted
|
|||
for libraries that satisfy some reference from regular objects.
|
||||
@option{--no-as-needed} restores the default behaviour.
|
||||
|
||||
@kindex --add-needed
|
||||
@kindex --no-add-needed
|
||||
@item --add-needed
|
||||
@itemx --no-add-needed
|
||||
This option affects the treatment of dynamic libraries from ELF
|
||||
DT_NEEDED tags in dynamic libraries mentioned on the command line after
|
||||
the @option{--no-add-needed} option. Normally, the linker will add
|
||||
a DT_NEEDED tag for each dynamic library from DT_NEEDED tags.
|
||||
@option{--no-add-needed} causes DT_NEEDED tags will never be emitted
|
||||
for those libraries from DT_NEEDED tags. @option{--add-needed} restores
|
||||
the default behaviour.
|
||||
|
||||
@kindex -assert @var{keyword}
|
||||
@item -assert @var{keyword}
|
||||
This option is ignored for SunOS compatibility.
|
||||
|
|
|
|||
|
|
@ -454,6 +454,7 @@ new_afile (const char *name,
|
|||
p->next = NULL;
|
||||
p->symbol_count = 0;
|
||||
p->dynamic = config.dynamic_link;
|
||||
p->add_needed = add_needed;
|
||||
p->as_needed = as_needed;
|
||||
p->whole_archive = whole_archive;
|
||||
p->loaded = FALSE;
|
||||
|
|
|
|||
|
|
@ -266,6 +266,10 @@ typedef struct lang_input_statement_struct
|
|||
/* Whether to search for this entry as a dynamic archive. */
|
||||
bfd_boolean dynamic;
|
||||
|
||||
/* Whether DT_NEEDED tags should be added for dynamic libraries in
|
||||
DT_NEEDED tags from this entry. */
|
||||
bfd_boolean add_needed;
|
||||
|
||||
/* Whether this entry should cause a DT_NEEDED tag only when
|
||||
satisfying references from regular files, or always. */
|
||||
bfd_boolean as_needed;
|
||||
|
|
|
|||
|
|
@ -97,6 +97,10 @@ bfd_boolean whole_archive;
|
|||
actually satisfies some reference in a regular object. */
|
||||
bfd_boolean as_needed;
|
||||
|
||||
/* Nonzero means never create DT_NEEDED entries for dynamic libraries
|
||||
in DT_NEEDED tags. */
|
||||
bfd_boolean add_needed = TRUE;
|
||||
|
||||
/* TRUE if we should demangle symbol names. */
|
||||
bfd_boolean demangling;
|
||||
|
||||
|
|
|
|||
|
|
@ -33,6 +33,7 @@ extern bfd_boolean trace_file_tries;
|
|||
extern bfd_boolean version_printed;
|
||||
extern bfd_boolean whole_archive;
|
||||
extern bfd_boolean as_needed;
|
||||
extern bfd_boolean add_needed;
|
||||
extern bfd_boolean demangling;
|
||||
extern int g_switch_value;
|
||||
extern const char *output_filename;
|
||||
|
|
|
|||
14
ld/lexsup.c
14
ld/lexsup.c
|
|
@ -112,6 +112,8 @@ enum option_values
|
|||
OPTION_SPLIT_BY_RELOC,
|
||||
OPTION_SPLIT_BY_FILE ,
|
||||
OPTION_WHOLE_ARCHIVE,
|
||||
OPTION_ADD_NEEDED,
|
||||
OPTION_NO_ADD_NEEDED,
|
||||
OPTION_AS_NEEDED,
|
||||
OPTION_NO_AS_NEEDED,
|
||||
OPTION_WRAP,
|
||||
|
|
@ -482,6 +484,12 @@ static const struct ld_option ld_options[] =
|
|||
{ {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
|
||||
'\0', NULL, N_("Include all objects from following archives"),
|
||||
TWO_DASHES },
|
||||
{ {"add-needed", no_argument, NULL, OPTION_ADD_NEEDED},
|
||||
'\0', NULL, N_("Set DT_NEEDED tags for DT_NEEDED entries in\n"
|
||||
"\t\t\t\tfollowing dynamic libs"), TWO_DASHES },
|
||||
{ {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_NEEDED},
|
||||
'\0', NULL, N_("Do not set DT_NEEDED tags for DT_NEEDED entries\n"
|
||||
"\t\t\t\tin following dynamic libs"), TWO_DASHES },
|
||||
{ {"as-needed", no_argument, NULL, OPTION_AS_NEEDED},
|
||||
'\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
|
||||
TWO_DASHES },
|
||||
|
|
@ -1196,6 +1204,12 @@ parse_args (unsigned argc, char **argv)
|
|||
case OPTION_WHOLE_ARCHIVE:
|
||||
whole_archive = TRUE;
|
||||
break;
|
||||
case OPTION_ADD_NEEDED:
|
||||
add_needed = TRUE;
|
||||
break;
|
||||
case OPTION_NO_ADD_NEEDED:
|
||||
add_needed = FALSE;
|
||||
break;
|
||||
case OPTION_AS_NEEDED:
|
||||
as_needed = TRUE;
|
||||
break;
|
||||
|
|
|
|||
Loading…
Reference in New Issue