1999-05-03 09:29:11 +02:00
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-*- text -*-
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2009-01-08 14:28:48 +01:00
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2009-03-02 18:27:36 +01:00
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* New script function REGION_ALIAS to add alias names to memory regions.
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2009-02-18 19:23:08 +01:00
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* PE targets no longer make use of the long section names PE extension to
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the COFF format when generating executable images, by default. The old
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(slightly non-conformant) behaviour can still be invoked by using the
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new '--enable-long-section-names' command-line option.
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2009-02-03 16:56:59 +01:00
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* --as-needed now links in a dynamic library if it satisfies undefined
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symbols in regular objects, or in other dynamic libraries. In the
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latter case the library is not linked if it is found in a DT_NEEDED
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entry of one of the libraries already linked.
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2009-01-16 15:14:07 +01:00
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* Add a new command line option, -Ttext-segment ADDR, for ELF targets
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to set the address of the first byte of the text segment.
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2009-03-02 11:33:08 +01:00
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* Add support for Sunplus score architecture.
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2009-01-08 14:28:48 +01:00
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* Add new option --use-nul-prefixed-import-tables to ld for PE targets to
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allow fallback to old import table generation with null element prefix.
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2009-01-03 19:04:16 +01:00
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* Windows PE systems now support a new --exclude-modules-for-implib option,
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allowing users to partition object files and archive members between a DLL
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and its associated import library as they are generated during linking.
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2008-12-23 20:10:25 +01:00
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* Add support for Lattice Mico32 (lm32) architecture.
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2008-11-27 13:41:14 +01:00
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* Add CR16 ELF --embedded-relocs (used to embedded relocations into binaries
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for Embedded-PIC code) option.
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2008-11-14 16:13:05 +01:00
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* Add to the PE/PE+ targets the support of two different kinds of
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pseudo-relocations. They can be selected by the switches
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--enable-runtime-pseudo-reloc-v1 and --enable-runtime-pseudo-reloc-v2.
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For the switch --enable-runtime-pseudo-reloc it uses for 32-bit
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runtime pseudo relocation version one, for 64-bit the version two.
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2008-09-08 10:56:57 +02:00
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Changes in 2.19:
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2008-09-07 06:02:31 +02:00
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* Linker scripts support a new INSERT command that makes it easier to
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augment the default script.
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2008-06-07 13:35:46 +02:00
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* Linker script input section filespecs may now specify a file within an
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2008-09-07 06:02:31 +02:00
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archive by writing "archive:file".
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2008-06-07 13:35:46 +02:00
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2008-05-31 18:35:56 +02:00
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* The --sort-common switch now has an optional argument which specifies the
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direction of sorting.
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Multi-GOT support for m68k.
bfd/
* elf32-m68k.c (struct elf_m68k_link_hash_entry: got_entry_key,
glist): New fields.
(struct elf_m68k_got_entry_key, struct elf_m68k_got_entry,
struct elf_m68k_got, struct elf_m68k_bfd2got_entry,
struct elf_m68k_multi_got): New data structures.
(struct elf_m68k_link_hash_table: local_gp_p, use_neg_got_offsets_p,
allow_multigot_p, multi_got_): New fields.
(elf_m68k_multi_got): New macro.
(elf_m68k_link_hash_newfunc): Initialize new fields of
struct elf_m68k_link_hash_entry.
(elf_m68k_link_hash_table_create): Initialize new fields of
struct elf_m68k_link_hash_table.
(elf_m68k_link_hash_table_free): New static function implementing hook.
(elf_m68k_init_got, elf_m68k_clear_got, elf_m68k_create_empty_got): New
static functions for struct elf_m68k_got.
(elf_m68k_init_got_entry_key, elf_m68k_got_entry_hash,
elf_m68k_got_entry_eq): New static functions for
struct elf_m68k_got_entry.
(ELF_M68K_REL_8O_MAX_N_ENTRIES_IN_GOT,
ELF_M68K_REL_8O_16O_MAX_N_ENTRIES_IN_GOT): New macros.
(enum elf_m68k_get_entry_howto): New enum.
(elf_m68k_get_got_entry, elf_m68k_update_got_entry_type,
elf_m68k_remove_got_entry_type): New static functions for
struct elf_m68k_got_entry.
(elf_m68k_add_entry_to_got): New static function.
(elf_m68k_bfd2got_entry_hash, elf_m68k_bfd2got_entry_eq,
elf_m68k_bfd2got_entry_del, elf_m68k_get_bfd2got_entry): New static
functions for struct elf_m68k_bfd2got_entry.
(struct elf_m68k_can_merge_gots_arg, elf_m68k_can_merge_gots_1,
elf_m68k_can_merge_gots): New traversal.
(struct elf_m68k_merge_gots_arg, elf_m68k_merge_gots_1,
elf_m68k_merge_gots): Ditto.
(struct elf_m68k_finalize_got_offsets_arg,
elf_m68k_finalize_got_offsets_1, elf_m68k_finalize_got_offsets): Ditto.
(struct elf_m68k_partition_multi_got_arg,
elf_m68k_partition_multi_got_1, elf_m68k_init_symndx2h_1,
elf_m68k_partition_multi_got): Ditto.
(elf_m68k_find_got_entry_ptr, elf_m68k_remove_got_entry): New static
functions.
(elf_m68k_copy_indirect_symbol): New static function implementing
a hook.
(elf_m68k_check_relocs): Update to add entries to multi-GOT.
(elf_m68k_gc_sweep_hook): Update to remove entries from multi-GOT.
(elf_m68k_always_size_sections): Assign BFDs to GOTs.
(elf_m68k_relocate_section): Update to properly handle GOT relocations.
(elf_m68k_finish_dynamic_symbol): Update to traverse all GOT entries
of a global symbol.
(bfd_elf_m68k_set_target_options): New function.
(bfd_elf32_bfd_link_hash_table_free): Define hook.
(bfd_elf32_bfd_final_link): Change expansion to bfd_elf_final_link
to skip generic calculation of GOT offsets.
(elf_backend_copy_indirect_symbol): Define hook.
* bfd-in.h (bfd_elf_m68k_set_target_options): Declare function.
* bfd-in2.h: Regenerate.
ld/
* configure.in (--enable-got): New option. Handle it.
* configure: Regenerate.
* config.in: Regenerate.
* emultempl/m68kelf.em: (got_handling_target_default): New shell
variable.
(GOT_HANDLING_TARGET_DEFAULT): New macro.
(GOT_HANDLING_DEFAULT): New macro. Initialize it from configure
option if one was given.
(got_handling): New static variable.
(elf_m68k_create_output_section_statements): New static function
implementing hook.
(PARSE_AND_LIST_PROLOGUE): Define shell variable.
(OPTION_GOT): New macro.
(PARSE_AND_LIST_LONGOPTS): Define shell variable. Specify
--got option.
(got): New linker option.
(PARSE_AND_LIST_OPTIONS): Define shell variable. Print help string
for --got option.
(PARSE_AND_LIST_ARGS_CASES): Define shell variable. Handle --got
option.
* ld.texinfo: Document --got=<type> option.
* gen-doc.texi: Add M68K.
* NEWS: Mention the new feature.
ld/testsuite/
* ld-m68k/got-12.s: New file.
* ld-m68k/got-13.s: New file.
* ld-m68k/got-14.s: New file.
* ld-m68k/got-15.s: New file.
* ld-m68k/got-34.s: New file.
* ld-m68k/got-35.s: New file.
* ld-m68k/got-single-12-ok.d: New dump test.
* ld-m68k/got-single-13-er.d: New dump test.
* ld-m68k/got-negative-14-ok.d: New dump test.
* ld-m68k/got-negative-15-er.d: New dump test.
* ld-m68k/got-negative-12-13-14-34-ok.d: New dump test.
* ld-m68k/got-negative-12-13-14-35-er.d: New dump test.
* ld-m68k/got-multigot-14-ok.d: New dump test.
* ld-m68k/got-multigot-15-er.d: New dump test.
* ld-m68k/got-multigot-12-13-14-34-35-ok.d: New dump test.
* ld-m68k/xgot-15.s: New source.
* ld-m68k/got-xgot-15-ok.d: New test.
* ld-m68k/got-xgot-12-13-14-15-34-35-ok.d: New test.
* ld-m68k/m68k.exp: Run new tests.
2008-05-21 14:01:37 +02:00
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* The M68K linker now supports multiple GOT generation schemes controlled via
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the --got=<type> command line option.
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2008-09-07 06:02:31 +02:00
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* The ARM EABI linker will now generate stubs for function calls to symbols
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that are too far away. The placement of the stubs is controlled by a new
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linker command line option: --stub-group-size=N.
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2008-05-21 10:09:38 +02:00
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2007-08-10 15:21:40 +02:00
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Changes in 2.18:
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2007-07-06 16:09:45 +02:00
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* Linker sources now released under version 3 of the GNU General Public
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License.
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2007-07-09 23:25:34 +02:00
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* ELF: New --build-id option to generate a unique per-binary identifier
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embedded in a note section.
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2007-06-29 16:09:34 +02:00
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* Added support for National Semicondutor CompactRISC (ie CR16) target.
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2007-06-29 20:44:09 +02:00
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2007-03-29 19:16:05 +02:00
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* -l:foo now searches the library path for a filename called foo,
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without converting it to libfoo.a or libfoo.so.
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2007-01-19 15:51:27 +01:00
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* Add a new command line option '--default-script=FILE' or '-dT FILE'
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which specifies a replacement for the built in, default linker
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script.
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2007-01-16 15:56:32 +01:00
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* ELF: Add -Bsymbolic-functions, --dynamic-list-cpp-new, which puts C++
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operator new and delete on the dynamic list, and --dynamic-list-data,
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builtin list for --dynamic-list, which puts global data symbols on the
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dynamic list.
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2006-09-20 13:35:11 +02:00
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* Add support for x86_64 PE+ target.
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2006-09-17 01:51:50 +02:00
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* Add support for Score target.
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2006-09-07 19:16:34 +02:00
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* ELF: Add --dynamic-list option to specify a list of global symbols
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whose references shouldn't be bound to the definition within the
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shared library, or a list of symbols which should be added to the
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symbol table in the executable.
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2006-08-22 09:41:05 +02:00
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* The default output section LMA has changed for allocatable sections from
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being equal to VMA, to keeping the difference between LMA and VMA the same as
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the previous output section in the same region. This is a more useful
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default when using overlays and other cases where you specify an LMA
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differing from the VMA for some sections.
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2006-08-04 16:53:26 +02:00
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* New switch: --print-gc-sections to list any sections removed by garabge
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collection.
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2007-01-29 17:28:40 +01:00
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* ARM: Added --vfp11-denorm-fix option to work around an erratum in current
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2007-07-06 16:09:45 +02:00
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VFP11 coprocessors.
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2007-01-29 17:28:40 +01:00
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2006-08-04 16:53:26 +02:00
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Changes in 2.17:
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2002-07-17 16:15:52 +02:00
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2006-02-17 15:36:28 +01:00
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* Support for the Infineon XC16X has been added by KPIT Cummins Infosystems.
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2006-04-05 17:40:40 +02:00
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* Modify the Linux linker search order to better match ld.so search order.
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Look for DT_NEEDED libraries in paths specified by ld.so.conf before
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searching the default directories, rather than vice versa.
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Use $prefix/etc/ld.so.conf if it exists, otherwise /etc/ld.so.conf.
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2006-02-09 02:05:10 +01:00
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2006-01-31 23:13:41 +01:00
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* PE-COFF: Forward exports from DLL's can now be specified in .def files
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passed directly to ld.
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2005-10-25 19:40:19 +02:00
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* Support for the Z80 processor family has been added.
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2005-10-13 02:57:43 +02:00
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* Add support for the "@<file>" syntax to the command line, so that extra
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switches can be read from <file>.
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2005-03-15 18:49:15 +01:00
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Changes in 2.16:
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2005-01-28 18:24:41 +01:00
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* Support for the R_ARM_V4BX relocation as defined in the ARM AAELF
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specification has been added via the --fix-v4bx command-line option.
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2005-01-21 13:04:25 +01:00
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* New linker script construct AS_NEEDED(), which sets the --as-needed flag
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for input files listed inside of it.
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2005-01-19 12:42:49 +01:00
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* A new command-line option, --sysroot, can be used to override the
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default sysroot location. It only applies to toolchains that were
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configured using --with-sysroot.
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2004-11-19 10:31:55 +01:00
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* New linker script functions: ORIGIN() and LENGTH() which return information
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about a specified memory region.
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2004-11-08 14:17:43 +01:00
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* Port to MAXQ processor contributed by HCL Tech.
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2004-10-26 20:41:52 +02:00
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* Added SEGMENT_START to the linker script language to permit the user to
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override the base address for a segment from the command-line.
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2004-10-07 16:45:24 +02:00
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* ELF: --warn-shared-textrel option to warn if adding a DT_TEXTREL to a shared
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object.
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2004-10-04 18:45:51 +02:00
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* Added SORT_BY_NAME and SORT_BY_ALIGNMENT to the linker script
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language to permit sorting sections by section name or section
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maximum alignment.
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* Added a new linker command line switch, --sort-section name|alignment,
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to sort sections by section name or maximum alignment.
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2004-10-07 16:45:24 +02:00
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* ELF: --add-needed/--no-add-needed options to control if a DT_NEEDED tag
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should be added when a shared library comes from DT_NEEDED tags.
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2004-07-19 21:14:51 +02:00
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2004-07-07 19:28:53 +02:00
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* Support for the crx-elf target added.
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2004-07-09 14:32:35 +02:00
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* Support for the sh-symbianelf target added.
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2004-07-07 19:28:53 +02:00
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2004-05-21 17:38:04 +02:00
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* A new linker command line switch has been added which allows the hash table
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size to be set to a suitable prime value near to its argument. This switch
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is --hash-size=<NUMBER>. Also if the switch --reduce-memory-overheads is
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used, and --hash-size has not been used, then the default value will be set
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to 1021.
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2004-05-19 16:15:55 +02:00
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* Linker map files are now generated with an O(N) algorithm for finding symbols
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that are defined in each section. This uses about 40% more memory for
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symbols than the old O(N^2) algorithm. You can use the new
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--reduce-memory-overheads option to select the old algorithm; this option
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might also be used in the future to select similar tradeoffs.
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2004-05-21 17:38:04 +02:00
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Changes in 2.15:
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2004-07-19 21:14:51 +02:00
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2004-10-07 16:45:24 +02:00
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* ELF: --as-needed/--no-as-needed options to control if a DT_NEEDED tag should
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be added only when a shared library is referenced.
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2007-07-09 23:25:34 +02:00
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2004-10-07 16:45:24 +02:00
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* PE: --large-address-aware option to indicate executables support virtual
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2004-05-07 17:17:58 +02:00
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addresses greater than 2 gigabytes.
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2004-05-07 16:49:48 +02:00
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* DWARF 2 support for i386pe added.
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2004-04-21 12:04:02 +02:00
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* The linker script operator DEFINED() will now yield 1 only for a symbol that
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is defined before the statement where DEFINED is used.
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2004-04-21 02:44:36 +02:00
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* The MIPS --embedded-relocs (used to embed relocations into binaries for
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Embedded-PIC code) is deprecated and will be removed in a future release.
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2004-03-30 16:04:32 +02:00
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* cr16c support added by NSC.
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2003-12-19 12:44:01 +01:00
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* m32r Linux (ELF) support added by Renesas.
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2003-08-20 10:37:19 +02:00
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* Improved linker's handling of unresolved symbols. The switch
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--unresolved-symbols=<method> has been added to tell the linker when it
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should report them and the switch --warn-unresolved-symbols has been added to
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make reports be issued as warning messages rather than errors.
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2003-09-30 18:44:04 +02:00
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Changes in 2.14:
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2003-04-03 09:37:41 +02:00
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* Added support for Xtensa architecture.
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2003-01-06 17:14:01 +01:00
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* Added --with-sysroot configure switch to specify a target system root, for
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linking against a target filesystem image.
|
|
|
|
|
|
2002-12-23 11:45:03 +01:00
|
|
|
|
* Added --accept-unknown-linker-format to restore old linker behaviour (pre
|
|
|
|
|
2.14) of silently accepting and linking in any files in an unknown binary
|
|
|
|
|
file format.
|
|
|
|
|
|
2002-10-23 15:24:10 +02:00
|
|
|
|
* Added --no-omagic to undo the effects of the -N option.
|
|
|
|
|
|
2002-09-11 16:42:45 +02:00
|
|
|
|
* Support for Texas Instruments TMS320C4x and TMS320C3x series of
|
|
|
|
|
DSP's contributed by Michael Hayes and Svein E. Seldal.
|
2007-07-09 23:25:34 +02:00
|
|
|
|
|
2002-08-23 10:03:32 +02:00
|
|
|
|
* Added --with-lib-path configure switch to specify default value for
|
|
|
|
|
LIB_PATH.
|
|
|
|
|
|
2002-07-30 19:32:30 +02:00
|
|
|
|
* ARM port to QNX operating system added by Graeme Peterson.
|
|
|
|
|
|
2002-07-17 16:15:52 +02:00
|
|
|
|
* IP2K support added by Denis Chertykov.
|
|
|
|
|
|
2002-07-16 09:58:34 +02:00
|
|
|
|
Changes in 2.13:
|
|
|
|
|
|
|
|
|
|
* Support for the Fujitsu FRV architecture added by Red Hat. Models for FR400
|
|
|
|
|
and FR500 included.
|
2002-06-18 23:17:27 +02:00
|
|
|
|
|
2002-05-30 04:58:04 +02:00
|
|
|
|
Changes in version 2.13:
|
|
|
|
|
|
|
|
|
|
* DEC VAX ELF support, by Matt Thomas.
|
|
|
|
|
|
2002-02-20 11:46:54 +01:00
|
|
|
|
Changes in version 2.12:
|
|
|
|
|
|
2002-02-15 05:04:03 +01:00
|
|
|
|
* Support for Don Knuth's MMIX, by Hans-Peter Nilsson.
|
|
|
|
|
|
2002-01-31 18:33:08 +01:00
|
|
|
|
* Support for the OpenRISC 32-bit embedded processor by OpenCores.
|
|
|
|
|
|
2001-10-03 17:11:48 +02:00
|
|
|
|
* Support for -z nocopyreloc in the x86 ELF linker, which disables
|
|
|
|
|
production of copy relocs. Warning: using this option may result in
|
|
|
|
|
non-sharable applications.
|
2000-09-06 02:13:34 +02:00
|
|
|
|
|
2001-08-23 17:14:18 +02:00
|
|
|
|
* Support for -z combreloc in the ELF linker, which puts dynamic
|
|
|
|
|
relocations against the same symbol together, so that dynamic linker
|
|
|
|
|
can use an one-entry symbol lookup cache.
|
|
|
|
|
|
|
|
|
|
* Support for ELF SHF_MERGE section merging, by Jakub Jelinek.
|
|
|
|
|
|
2002-02-20 11:46:54 +01:00
|
|
|
|
Changes in version 2.11:
|
|
|
|
|
|
2000-12-11 14:49:46 +01:00
|
|
|
|
* Support for AMD x86-64 architecture, by Jan Hubicka, SuSE Labs.
|
|
|
|
|
|
2000-09-02 23:35:47 +02:00
|
|
|
|
* Support added for eliminating duplicate DWARF2 debug information by
|
|
|
|
|
having the compiler generate the information in sections called
|
|
|
|
|
.gnu.linkonce.wi.XXXX where XXXX is a checksum for the contents. The
|
|
|
|
|
linker then merges these sections together into the normal .debug_info
|
|
|
|
|
section.
|
1999-05-03 09:29:11 +02:00
|
|
|
|
|
2000-08-22 21:34:37 +02:00
|
|
|
|
* The native ELF linker now searches the directories in DT_RUNPATH or
|
|
|
|
|
DT_RPATH of a shared library for shared libraries needed by it.
|
|
|
|
|
|
2000-06-20 15:31:59 +02:00
|
|
|
|
* TI C54x support, by Timothy Wall.
|
|
|
|
|
|
2000-05-22 23:58:40 +02:00
|
|
|
|
* Added command line switch --section-start to set the start address of any
|
2007-07-09 23:25:34 +02:00
|
|
|
|
specified section.
|
2000-05-22 23:58:40 +02:00
|
|
|
|
|
2000-05-17 21:38:53 +02:00
|
|
|
|
* Added ability to emit full relocation information in linked executables,
|
|
|
|
|
enabled by --emit-relocs. Some post-linkage optimization tools need
|
|
|
|
|
this information in order to be able to correctly identify and perform
|
|
|
|
|
symbol relative addressing in the event of changes in section contents
|
|
|
|
|
(instructions being added or deleted, extending data sections, etc.)
|
|
|
|
|
|
2000-08-14 20:50:13 +02:00
|
|
|
|
* Support for i860, by Jason Eckhardt (preliminary, alpha quality).
|
|
|
|
|
|
2000-08-24 19:42:52 +02:00
|
|
|
|
* Support for CRIS (Axis Communications ETRAX series).
|
|
|
|
|
|
2002-07-31 11:59:03 +02:00
|
|
|
|
* Support for PDP-11 and 2.11BSD a.out format, by Lars Brinkhoff.
|
|
|
|
|
|
2000-06-19 04:36:45 +02:00
|
|
|
|
Changes in version 2.10:
|
|
|
|
|
|
2007-07-09 23:25:34 +02:00
|
|
|
|
* Added AT> to the linker script language to allow load-time allocation of
|
2000-04-07 19:04:19 +02:00
|
|
|
|
sections into regions.
|
|
|
|
|
|
2007-07-09 23:25:34 +02:00
|
|
|
|
* Added garbage collection of unused sections, enabled by --gc-sections.
|
1999-05-03 09:29:11 +02:00
|
|
|
|
It does require a bit of backend support; currently implemented are
|
2000-06-24 06:48:41 +02:00
|
|
|
|
arm-elf, avr-elf, d10v-elf, fr30-elf, i386-elf, m32r-elf, m68k-elf,
|
|
|
|
|
mcore-elf, mips-elf, mn10300-elf, ppc-elf, sh-elf, sparc-elf, and v850-elf.
|
2000-06-19 04:05:53 +02:00
|
|
|
|
Others will ignore the option.
|
1999-05-03 09:29:11 +02:00
|
|
|
|
|
|
|
|
|
* Added SORT to the linker script language to permit sorting sections by file
|
|
|
|
|
name or section name.
|
|
|
|
|
|
|
|
|
|
* Added EXTERN to the linker script language as an equivalent to the -u
|
|
|
|
|
command-line option.
|
|
|
|
|
|
|
|
|
|
* Added ASSERT to the linker script language.
|
|
|
|
|
|
1999-06-13 12:20:50 +02:00
|
|
|
|
* Added EXCLUDE_FILE to the linker script language for further control over
|
|
|
|
|
wildcard file names.
|
|
|
|
|
|
1999-05-03 09:29:11 +02:00
|
|
|
|
* Added -O option to optimize linker output (as of this writing, this only
|
2002-07-31 11:59:03 +02:00
|
|
|
|
affects ELF shared library generation).
|
1999-05-03 09:29:11 +02:00
|
|
|
|
|
|
|
|
|
* The -e option now accepts a number as well as a symbol name.
|
|
|
|
|
|
1999-06-13 21:25:57 +02:00
|
|
|
|
* Added --no-undefined option to disallow undefined symbols when creating a
|
|
|
|
|
shared library.
|
|
|
|
|
|
2000-03-02 02:26:27 +01:00
|
|
|
|
* The linker now issues a warning, not an error, for an undefined symbol when
|
|
|
|
|
using -Bsymbolic; use the new --no-undefined option to get the old
|
|
|
|
|
behaviour.
|
|
|
|
|
|
1999-05-03 09:29:11 +02:00
|
|
|
|
* Added --demangle and --no-demangle options.
|
|
|
|
|
|
|
|
|
|
Changes in version 2.9:
|
|
|
|
|
|
|
|
|
|
* Added SQUAD to the linker script language.
|
|
|
|
|
|
|
|
|
|
* New option --no-warn-mismatch.
|
|
|
|
|
|
|
|
|
|
* The MEMORY command now parses the attributes to determine where sections that
|
|
|
|
|
are not placed in a specific memory region are placed.
|
|
|
|
|
|
|
|
|
|
Changes in version 2.8:
|
|
|
|
|
|
|
|
|
|
* Linker scripts may now contain shell wildcard characters for file and section
|
|
|
|
|
names.
|
|
|
|
|
|
|
|
|
|
* The linker now supports symbol versions in ELF.
|
|
|
|
|
|
|
|
|
|
* The NOCROSSREFS command was added to the linker script language.
|
|
|
|
|
|
|
|
|
|
* The LOADADDR expression was added to the linker script language.
|
|
|
|
|
|
|
|
|
|
* MAX and MIN functions were added to the linker script language.
|
|
|
|
|
|
|
|
|
|
* The OVERLAY construct was added to the linker script language.
|
|
|
|
|
|
|
|
|
|
* New option --warn-section-align to warn when the address of an output section
|
|
|
|
|
changes due to alignment of an input section.
|
|
|
|
|
|
|
|
|
|
* New options --filter/-F and --auxiliary/-f.
|
|
|
|
|
|
|
|
|
|
Changes in version 2.7:
|
|
|
|
|
|
|
|
|
|
* New option --cref to print out a cross reference table.
|
|
|
|
|
|
|
|
|
|
* New option --wrap SYMBOL.
|
|
|
|
|
|
|
|
|
|
* New option --no-whole-archive, to turn off the effect of --whole-archive.
|
|
|
|
|
|
|
|
|
|
* Input sections assigned to the output section /DISCARD/ in the linker script
|
|
|
|
|
are not included in the output file.
|
|
|
|
|
|
|
|
|
|
* The SunOS and ELF linkers now merge stabs debugging information which uses
|
|
|
|
|
the N_BINCL and N_EINCL stab types. This reduces the amount of debugging
|
|
|
|
|
information generated.
|
|
|
|
|
|
|
|
|
|
Changes in version 2.6:
|
|
|
|
|
|
|
|
|
|
* When an ELF section name is representable as a C identifier (this is not true
|
2008-05-21 14:16:22 +02:00
|
|
|
|
of most ELF section names), the linker will automatically define symbols
|
|
|
|
|
__start_SECNAME and __stop_SECNAME, where SECNAME is the section name, at the
|
|
|
|
|
beginning and the end of the section. This is used by glibc.
|
|
|
|
|
|
|
|
|
|
Addendum: Current versions of the linker (at least for version 2.18 onwards
|
|
|
|
|
and possibly much earlier as well) place two restrictions on this feature: The
|
|
|
|
|
symbols are only implemented for orphaned sections, not for explicitly placed
|
|
|
|
|
sections and they are PROVIDEd rather than being defined.
|
1999-05-03 09:29:11 +02:00
|
|
|
|
|
|
|
|
|
* When an ELF section named .gnu.warning is encountered in an input file, the
|
|
|
|
|
contents of the section are displayed as an error message, and the section is
|
|
|
|
|
not copied into the output file. This is used by glibc.
|
|
|
|
|
|
|
|
|
|
* When an ELF section named .gnu.warning.SYMBOL is encountered in an input
|
|
|
|
|
file, and the symbol SYMBOL is referenced by some object file, the contents of
|
|
|
|
|
the section are displayed as an error message. The section is not copied into
|
2003-06-25 08:40:27 +02:00
|
|
|
|
the output file, unless doing a relocatable or shared link. This is used by
|
1999-05-03 09:29:11 +02:00
|
|
|
|
glibc.
|
|
|
|
|
|
|
|
|
|
* New options -split-by-reloc and -split-by-file.
|
|
|
|
|
|
|
|
|
|
* The linker now supports linking PIC compiled code on SPARC SunOS. It can
|
|
|
|
|
also create SPARC SunOS shared libraries, and, like the native SunOS linker,
|
|
|
|
|
will do so whenever there is an undefined symbol in the link and neither the -e
|
|
|
|
|
nor the -r option was used.
|
|
|
|
|
|
|
|
|
|
* The -rpath option may be used on SunOS to set the list of directories to be
|
|
|
|
|
searched at run time. This overrides the default of building the list from the
|
|
|
|
|
-L options.
|
|
|
|
|
|
|
|
|
|
* The COFF linker now combines debugging information for structs, unions, and
|
|
|
|
|
enums, so that even if the same type is defined in multiple input files it will
|
|
|
|
|
only be defined once in the output file. The --traditional-format switch will
|
|
|
|
|
prevent this optimization.
|
|
|
|
|
|
|
|
|
|
Changes in version 2.5:
|
|
|
|
|
|
|
|
|
|
* The linker now supports linking against SunOS shared libraries. It still can
|
|
|
|
|
not link SunOS PIC (Position Independent Code) files, so it can not be used to
|
2003-10-25 18:26:30 +02:00
|
|
|
|
generate shared libraries.
|
1999-05-03 09:29:11 +02:00
|
|
|
|
|
|
|
|
|
* The linker now supports linking against ELF shared libraries for the i386
|
|
|
|
|
(UnixWare) and SPARC (Solaris). It can also link ELF PIC files, and can be
|
|
|
|
|
used to generate shared libraries. Shared library generation is not well
|
|
|
|
|
tested; please report any problems encountered. The linker is now enabled for
|
|
|
|
|
Solaris again.
|
|
|
|
|
|
|
|
|
|
* Eric Youngdale has contributed Linux support code, including linking against
|
|
|
|
|
Linux a.out shared libraries. The linker produces Linux QMAGIC binaries.
|
|
|
|
|
|
|
|
|
|
* The ELF backend has been converted to the new linker code. To use the new
|
|
|
|
|
ELF linker, each particular target requires a relocation function. So far,
|
|
|
|
|
this function has been written for i386 (UnixWare), SPARC (Solaris) MIPS (Irix
|
|
|
|
|
5), and HPPA ELF targets.
|
|
|
|
|
|
|
|
|
|
* The -( (--start-group) and -) (--end-group) options have been added to
|
|
|
|
|
support searching a group of archives as though they were a single archive.
|
|
|
|
|
This can also be used in a linker script, as GROUP ( files ).
|
|
|
|
|
|
|
|
|
|
* When a file is named on the command line, and the linker does not recognize
|
|
|
|
|
it as an object file, the linker will now treat the file as a linker script
|
|
|
|
|
file. A linker script named in this way augments, but does not replace, the
|
|
|
|
|
default linker script.
|
|
|
|
|
|
|
|
|
|
* The -warn-once option was added. It causes the linker to only warn once per
|
|
|
|
|
undefined symbol, rather than once per reference.
|
|
|
|
|
|
|
|
|
|
* The COFF backend has been converted to the new linker code. As with ELF, to
|
|
|
|
|
use the new linker, each particular target requires a relocation function. So
|
|
|
|
|
far, this function has been written for the i386, m68k, a29k and SH targets.
|
|
|
|
|
|
|
|
|
|
* The -V flag was made a synonym for -v, for SVR4 compatibility. The old -V
|
|
|
|
|
behaviour is available via --verbose.
|
|
|
|
|
|
|
|
|
|
Changes in version 2.4:
|
|
|
|
|
|
|
|
|
|
* New linker code, by Steve Chamberlain and Ian Taylor. For a.out and ecoff
|
|
|
|
|
formats (so far), this should result in considerable savings in time
|
|
|
|
|
and memory used while linking; slightly poorer performance than
|
|
|
|
|
before for formats not converted yet.
|
|
|
|
|
|
|
|
|
|
* Command-line parsing is no longer done with flex. This means
|
|
|
|
|
oddball characters in filenames won't get treated as argument
|
|
|
|
|
separators.
|
|
|
|
|
|
|
|
|
|
* HP-PA ELF support, by Jeff Law. (No SOM support yet.)
|
|
|
|
|
|
|
|
|
|
* Mach i386 support, by David Mackenzie.
|
|
|
|
|
|
|
|
|
|
* Irix 4 shared libraries are now supported (Irix 5 uses ELF, and ELF shared
|
|
|
|
|
libraries are not yet supported).
|
|
|
|
|
|
|
|
|
|
* COFF shared libraries (as on SCO) should work as well.
|
|
|
|
|
|
|
|
|
|
* The linker is disabled for Solaris. (Actually, it was in 2.3 also, I just
|
|
|
|
|
forgot to note it.) Some of their C library routines don't work when
|
|
|
|
|
statically linked, and the GNU linker doesn't support dynamic linking yet.
|
|
|
|
|
|
|
|
|
|
Changes in version 2.3:
|
|
|
|
|
|
|
|
|
|
* Weak symbols are now supported.
|
|
|
|
|
|
|
|
|
|
* ELF support has been added. The linker has been bootstrapped on
|
|
|
|
|
UnixWare and Solaris.
|
|
|
|
|
|
|
|
|
|
* Alpha OSF/1 support has been added (non dynamic linking only).
|
|
|
|
|
|
|
|
|
|
Changes in version 2.2:
|
|
|
|
|
|
|
|
|
|
* The `bfd' library has been updated to reduce a.out-format string
|
|
|
|
|
table size. The effect of this is that files linked from many input
|
|
|
|
|
files with duplicate symbols (`-g' debugging records, or identical
|
|
|
|
|
static symbols) should be much smaller.
|
|
|
|
|
|
|
|
|
|
Changes in version 2.1:
|
|
|
|
|
|
|
|
|
|
* The ld -ySYMBOL flag (to trace references to SYMBOL) is now implemented.
|
|
|
|
|
|
|
|
|
|
* There is now support for writing ECOFF files, so ld and the
|
|
|
|
|
other utilities should work on Risc/Ultrix and Irix.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Local variables:
|
|
|
|
|
fill-column: 79
|
|
|
|
|
End:
|