1999-05-03 07:29:11 +00:00
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-*- text -*-
|
2002-07-17 14:15:52 +00:00
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2004-05-07 14:49:48 +00:00
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* DWARF 2 support for i386pe added.
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2004-04-21 10:04:02 +00:00
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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 00:44:36 +00:00
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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 14:04:32 +00:00
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* cr16c support added by NSC.
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2003-12-19 11:44:01 +00:00
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* m32r Linux (ELF) support added by Renesas.
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2003-08-20 08:37:19 +00:00
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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 16:44:04 +00:00
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Changes in 2.14:
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2003-04-03 07:37:41 +00:00
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* Added support for Xtensa architecture.
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2003-01-06 16:14:01 +00:00
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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.
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2002-12-23 10:45:03 +00:00
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* Added --accept-unknown-linker-format to restore old linker behaviour (pre
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2.14) of silently accepting and linking in any files in an unknown binary
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file format.
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2002-10-23 13:24:10 +00:00
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* Added --no-omagic to undo the effects of the -N option.
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2002-09-11 14:42:45 +00:00
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* Support for Texas Instruments TMS320C4x and TMS320C3x series of
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|
DSP's contributed by Michael Hayes and Svein E. Seldal.
|
2002-08-28 10:38:51 +00:00
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2002-08-23 08:03:32 +00:00
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* Added --with-lib-path configure switch to specify default value for
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LIB_PATH.
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|
2002-07-30 17:32:30 +00:00
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* ARM port to QNX operating system added by Graeme Peterson.
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2002-07-17 14:15:52 +00:00
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* IP2K support added by Denis Chertykov.
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2002-07-16 07:58:34 +00:00
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|
Changes in 2.13:
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* Support for the Fujitsu FRV architecture added by Red Hat. Models for FR400
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and FR500 included.
|
2002-06-18 21:17:27 +00:00
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2002-05-30 02:58:04 +00:00
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Changes in version 2.13:
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|
* DEC VAX ELF support, by Matt Thomas.
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|
2002-02-20 10:46:54 +00:00
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|
Changes in version 2.12:
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|
2002-02-15 04:04:03 +00:00
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|
* Support for Don Knuth's MMIX, by Hans-Peter Nilsson.
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|
2002-01-31 17:33:08 +00:00
|
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|
* Support for the OpenRISC 32-bit embedded processor by OpenCores.
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|
2001-10-03 15:11:48 +00:00
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|
* Support for -z nocopyreloc in the x86 ELF linker, which disables
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|
|
production of copy relocs. Warning: using this option may result in
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|
|
non-sharable applications.
|
2000-09-06 00:13:34 +00:00
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|
2001-08-23 15:14:18 +00:00
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|
* Support for -z combreloc in the ELF linker, which puts dynamic
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|
|
relocations against the same symbol together, so that dynamic linker
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|
can use an one-entry symbol lookup cache.
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|
|
* Support for ELF SHF_MERGE section merging, by Jakub Jelinek.
|
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|
2002-02-20 10:46:54 +00:00
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|
|
Changes in version 2.11:
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|
2000-12-11 13:49:46 +00:00
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|
* Support for AMD x86-64 architecture, by Jan Hubicka, SuSE Labs.
|
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|
2000-09-02 21:35:47 +00:00
|
|
|
|
* Support added for eliminating duplicate DWARF2 debug information by
|
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|
|
having the compiler generate the information in sections called
|
|
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|
|
.gnu.linkonce.wi.XXXX where XXXX is a checksum for the contents. The
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|
|
linker then merges these sections together into the normal .debug_info
|
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|
section.
|
1999-05-03 07:29:11 +00:00
|
|
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|
2000-08-22 19:34:37 +00:00
|
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|
* The native ELF linker now searches the directories in DT_RUNPATH or
|
|
|
|
|
DT_RPATH of a shared library for shared libraries needed by it.
|
|
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|
2000-06-20 13:31:59 +00:00
|
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|
|
* TI C54x support, by Timothy Wall.
|
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|
2000-05-22 21:58:40 +00:00
|
|
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|
* Added command line switch --section-start to set the start address of any
|
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|
|
|
specified section.
|
|
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|
|
2000-05-17 19:38:53 +00:00
|
|
|
|
* 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 18:50:13 +00:00
|
|
|
|
* Support for i860, by Jason Eckhardt (preliminary, alpha quality).
|
|
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|
|
|
2000-08-24 17:42:52 +00:00
|
|
|
|
* Support for CRIS (Axis Communications ETRAX series).
|
|
|
|
|
|
2002-07-31 09:59:03 +00:00
|
|
|
|
* Support for PDP-11 and 2.11BSD a.out format, by Lars Brinkhoff.
|
|
|
|
|
|
2000-06-19 02:36:45 +00:00
|
|
|
|
Changes in version 2.10:
|
|
|
|
|
|
2000-04-07 17:04:19 +00:00
|
|
|
|
* Added AT> to the linker script language to allow load-time allocation of
|
|
|
|
|
sections into regions.
|
|
|
|
|
|
1999-05-03 07:29:11 +00:00
|
|
|
|
* Added garbage collection of unused sections, enabled by --gc-sections.
|
|
|
|
|
It does require a bit of backend support; currently implemented are
|
2000-06-24 04:48:41 +00:00
|
|
|
|
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 02:05:53 +00:00
|
|
|
|
Others will ignore the option.
|
1999-05-03 07:29:11 +00:00
|
|
|
|
|
|
|
|
|
* 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 10:20:50 +00:00
|
|
|
|
* Added EXCLUDE_FILE to the linker script language for further control over
|
|
|
|
|
wildcard file names.
|
|
|
|
|
|
1999-05-03 07:29:11 +00:00
|
|
|
|
* Added -O option to optimize linker output (as of this writing, this only
|
2002-07-31 09:59:03 +00:00
|
|
|
|
affects ELF shared library generation).
|
1999-05-03 07:29:11 +00:00
|
|
|
|
|
|
|
|
|
* The -e option now accepts a number as well as a symbol name.
|
|
|
|
|
|
1999-06-13 19:25:57 +00:00
|
|
|
|
* Added --no-undefined option to disallow undefined symbols when creating a
|
|
|
|
|
shared library.
|
|
|
|
|
|
2000-03-02 01:26:27 +00:00
|
|
|
|
* 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 07:29:11 +00:00
|
|
|
|
* 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
|
|
|
|
|
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.
|
|
|
|
|
|
|
|
|
|
* 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 06:40:27 +00:00
|
|
|
|
the output file, unless doing a relocatable or shared link. This is used by
|
1999-05-03 07:29:11 +00:00
|
|
|
|
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 16:26:30 +00:00
|
|
|
|
generate shared libraries.
|
1999-05-03 07:29:11 +00:00
|
|
|
|
|
|
|
|
|
* 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:
|
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* The ld -ySYMBOL flag (to trace references to SYMBOL) is now implemented.
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* There is now support for writing ECOFF files, so ld and the
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other utilities should work on Risc/Ultrix and Irix.
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Local variables:
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fill-column: 79
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End:
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