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PROGRAM:

NAME


gold - The GNU ELF linker

SYNOPSIS


ld.gold [options] file...

OPTIONS


--help Report usage information

-v, --version
Report version information

-V Report version and target information

--add-needed
Not supported

--no-add-needed
Do not copy DT_NEEDED tags from shared libraries

--allow-multiple-definition Allow multiple definitions of symbols

--no-allow-multiple-definition
Do not allow multiple definitions

--allow-shlib-undefined
Allow unresolved references in shared libraries

--no-allow-shlib-undefined
Do not allow unresolved references in shared libraries

--as-needed
Only set DT_NEEDED for shared libraries if used

--no-as-needed
Always DT_NEEDED for shared libraries

-assert [ignored]
Ignored

-b [elf,binary], --format [elf,binary]
Set input format

-Bdynamic -l searches for shared libraries

-Bstatic -l does not search for shared libraries

-dy alias for -Bdynamic

-dn alias for -Bstatic

-Bgroup
Use group name lookup rules for shared library

-Bsymbolic
Bind defined symbols locally

-Bsymbolic-functions
Bind defined function symbols locally

--build-id [=STYLE]
Generate build ID note

--build-id-chunk-size-for-treehash SIZE
Chunk size for '--build-id=tree'

--build-id-min-file-size-for-treehash SIZE
Minimum output file size for '--build-id=tree' to work
differently than '--build-id=sha1'

--check-sections
Check segment addresses for overlaps (default)

--no-check-sections
Do not check segment addresses for overlaps

--compress-debug-sections [none,zlib]
Compress .debug_* sections in the output file

--copy-dt-needed-entries
Not supported

--no-copy-dt-needed-entries Do not copy DT_NEEDED tags from shared
libraries

--cref
Output cross reference table

--no-cref
Do not output cross reference table

--ctors-in-init-array
Use DT_INIT_ARRAY for all constructors (default)

--no-ctors-in-init-array
Handle constructors as directed by compiler

-d, --define-common
Define common symbols

--no-define-common
Do not define common symbols

-dc Alias for -d

-dp Alias for -d

--debug [all,files,script,task][,...]
Turn on debugging

--defsym SYMBOL=EXPRESSION
Define a symbol

--demangle [=STYLE]
Demangle C++ symbols in log messages

--no-demangle
Do not demangle C++ symbols in log messages

--detect-odr-violations
Look for violations of the C++ One Definition Rule

--no-detect-odr-violations
Do not look for violations of the C++ One Definition Rule

-x, --discard-all
Delete all local symbols

-X, --discard-locals
Delete all temporary local symbols

--dynamic-list-data
Add data symbols to dynamic symbols

--dynamic-list-cpp-new
Add C++ operator new/delete to dynamic symbols

--dynamic-list-cpp-typeinfo Add C++ typeinfo to dynamic symbols

--dynamic-list FILE
Read a list of dynamic symbols

-e ADDRESS, --entry ADDRESS Set program start address

--exclude-libs lib,lib ...
Exclude libraries from automatic export

-E, --export-dynamic
Export all dynamic symbols

--no-export-dynamic
Do not export all dynamic symbols (default)

--export-dynamic-symbol SYMBOL
Export SYMBOL to dynamic symbol table

-EB Link big-endian objects.

-EL Link little-endian objects.

--eh-frame-hdr
Create exception frame header

--no-enum-size-warning
(ARM only) Do not warn about objects with incompatible enum
sizes

-f SHLIB, --auxiliary SHLIB Auxiliary filter for shared object symbol
table

-F SHLIB, --filter SHLIB
Filter for shared object symbol table

--fatal-warnings
Treat warnings as errors

--no-fatal-warnings
Do not treat warnings as errors

-fini SYMBOL
Call SYMBOL at unload-time

--fix-cortex-a8
(ARM only) Fix binaries for Cortex-A8 erratum.

--no-fix-cortex-a8
(ARM only) Do not fix binaries for Cortex-A8 erratum.

--fix-arm1176
(ARM only) Fix binaries for ARM1176 erratum.

--no-fix-arm1176
(ARM only) Do not fix binaries for ARM1176 erratum.

--merge-exidx-entries
(ARM only) Merge exidx entries in debuginfo.

--no-merge-exidx-entries
(ARM only) Do not merge exidx entries in debuginfo.

--fix-v4bx
(ARM only) Rewrite BX rn as MOV pc, rn for ARMv4

--fix-v4bx-interworking
(ARM only) Rewrite BX rn branch to ARMv4 interworking veneer

-g Ignored

--gdb-index
Generate .gdb_index section

--no-gdb-index
Do not generate .gdb_index section

--gnu-unique
Enable STB_GNU_UNIQUE symbol binding (default)

--no-gnu-unique
Disable STB_GNU_UNIQUE symbol binding

-h FILENAME, -soname FILENAME
Set shared library name

--hash-bucket-empty-fraction FRACTION
Min fraction of empty buckets in dynamic hash

--hash-style [sysv,gnu,both]
Dynamic hash style

-I PROGRAM, --dynamic-linker PROGRAM
Set dynamic linker path

--incremental
Do an incremental link if possible; otherwise, do a full link
and prepare output for incremental linking

--no-incremental
Do a full link (default)

--incremental-full
Do a full link and prepare output for incremental linking

--incremental-update
Do an incremental link; exit if not possible

--incremental-base FILE
Set base file for incremental linking (default is output file)

--incremental-changed
Assume files changed

--incremental-unchanged
Assume files didn't change

--incremental-unknown
Use timestamps to check files (default)

--incremental-startup-unchanged
Assume startup files unchanged (files preceding this option)

--incremental-patch PERCENT Amount of extra space to allocate for
patches

-init SYMBOL
Call SYMBOL at load-time

--just-symbols FILE
Read only symbol values from FILE

--map-whole-files
Map whole files to memory (default on 64-bit hosts)

--no-map-whole-files
Map relevant file parts to memory (default on 32-bit hosts)

--keep-files-mapped
Keep files mapped across passes (default)

--no-keep-files-mapped
Release mapped files after each pass

--ld-generated-unwind-info
Generate unwind information for PLT (default)

--no-ld-generated-unwind-info
Do not generate unwind information for PLT

-l LIBNAME, --library LIBNAME
Search for library LIBNAME

-L DIR, --library-path DIR
Add directory to search path

--text-reorder
Enable text section reordering for GCC section names (default)

--no-text-reorder
Disable text section reordering for GCC section names

-nostdlib
Only search directories specified on the command line.

--rosegment
Put read-only non-executable sections in their own segment

--rosegment-gap OFFSET
Set offset between executable and read-only segments

-m EMULATION
Set GNU linker emulation; obsolete

--mmap-output-file
Map the output file for writing (default).

--no-mmap-output-file
Do not map the output file for writing.

-M, --print-map
Write map file on standard output

-Map MAPFILENAME
Write map file

-n, --nmagic
Do not page align data

-N, --omagic
Do not page align data, do not make text readonly

--no-omagic
Page align data, make text readonly

--enable-new-dtags
Enable use of DT_RUNPATH and DT_FLAGS

--disable-new-dtags
Disable use of DT_RUNPATH and DT_FLAGS

--noinhibit-exec
Create an output file even if errors occur

--no-undefined
Report undefined symbols (even with --shared)

-o FILE, --output FILE
Set output file name

-O LEVEL, -optimize LEVEL
Optimize output file size

--oformat [binary]
Set output format

-p (ARM only) Ignore for backward compatibility

-pie Create a position independent executable

-no-pie
Do not create a position independent executable

--pic-executable
Create a position independent executable

--no-pic-executable
Do not create a position independent executable

-no-pipeline-knowledge
(ARM only) Ignore for backward compatibility

--plt-align [=P2ALIGN]
(PowerPC64 only) Align PLT call stubs to fit cache lines

--plt-static-chain
(PowerPC64 only) PLT call stubs should load r11

--no-plt-static-chain
(PowerPC64 only) PLT call stubs should not load r11

--plt-thread-safe
(PowerPC64 only) PLT call stubs with load-load barrier

--no-plt-thread-safe
(PowerPC64 only) PLT call stubs without barrier

--plugin PLUGIN
Load a plugin library

--plugin-opt OPTION
Pass an option to the plugin

--posix-fallocate
Use posix_fallocate to reserve space in the output file
(default).

--no-posix-fallocate
Use fallocate or ftruncate to reserve space.

--preread-archive-symbols
Preread archive symbols when multi-threaded

--print-output-format
Print default output format

--print-symbol-counts FILENAME
Print symbols defined and used for each input

-Qy Ignored for SVR4 compatibility

-q, --emit-relocs
Generate relocations in output

-r, -relocatable
Generate relocatable output

-i Synonym for -r

--relax
Relax branches on certain targets

--retain-symbols-file FILE
keep only symbols listed in this file

-R DIR Add DIR to runtime search path

-rpath DIR
Add DIR to runtime search path

--rpath-link DIR
Add DIR to link time shared library search path

--section-ordering-file FILENAME
Layout sections in the order specified.

--section-start SECTION=ADDRESS
Set address of section

--sort-common [={ascending,descending}]
Sort common symbols by alignment

--sort-section [none,name]
Sort sections by name. '--no-text-reorder' will override
'--sort-section=name' for .text

--spare-dynamic-tags COUNT
Dynamic tag slots to reserve (default 5)

-s, --strip-all
Strip all symbols

-S, --strip-debug
Strip debugging information

--strip-debug-non-line
Emit only debug line number information

--strip-debug-gdb
Strip debug symbols that are unused by gdb (at least versions <=
7.4)

--strip-lto-sections
Strip LTO intermediate code sections

--stub-group-size SIZE
(ARM, PowerPC only) The maximum distance from instructions in a
group of sections to their stubs. Negative values mean stubs
are always after (PowerPC before) the group. 1 means use
default size.

--no-keep-memory
Use less memory and more disk I/O (included only for
compatibility with GNU ld)

-G, -shared
Generate shared library

-Bshareable
Generate shared library

--split-stack-adjust-size SIZE
Stack size when -fsplit-stack function calls non-split

-static
Do not link against shared libraries

--icf [none,all,safe]
Identical Code Folding. '--icf=safe' Folds ctors, dtors and
functions whose pointers are definitely not taken.

--icf-iterations COUNT
Number of iterations of ICF (default 2)

--print-icf-sections
List folded identical sections on stderr

--no-print-icf-sections
Do not list folded identical sections

--keep-unique SYMBOL
Do not fold this symbol during ICF

--gc-sections
Remove unused sections

--no-gc-sections
Don't remove unused sections (default)

--print-gc-sections
List removed unused sections on stderr

--no-print-gc-sections
Do not list removed unused sections

--stats
Print resource usage statistics

--sysroot DIR
Set target system root directory

-t, --trace
Print the name of each input file

-T FILE, --script FILE
Read linker script

--threads
Run the linker multi-threaded

--no-threads
Do not run the linker multi-threaded

--thread-count COUNT
Number of threads to use

--thread-count-initial COUNT
Number of threads to use in initial pass

--thread-count-middle COUNT Number of threads to use in middle pass

--thread-count-final COUNT
Number of threads to use in final pass

-Tbss ADDRESS
Set the address of the bss segment

-Tdata ADDRESS
Set the address of the data segment

-Ttext ADDRESS
Set the address of the text segment

-Ttext-segment ADDRESS
Set the address of the text segment

-Trodata-segment ADDRESS
Set the address of the rodata segment

--toc-optimize
(PowerPC64 only) Optimize TOC code sequences

--no-toc-optimize
(PowerPC64 only) Don't optimize TOC code sequences

--toc-sort
(PowerPC64 only) Sort TOC and GOT sections

--no-toc-sort
(PowerPC64 only) Don't sort TOC and GOT sections

-u SYMBOL, --undefined SYMBOL
Create undefined reference to SYMBOL

--unresolved-symbols
ignore-all,report-all,ignore-in-object-files,ignore-in-shared-libs
How to handle unresolved symbols

--verbose
Synonym for --debug=files

--version-script FILE
Read version script

--warn-common
Warn about duplicate common symbols

--no-warn-common
Do not warn about duplicate common symbols (default)

--warn-constructors
Ignored

--no-warn-constructors
Ignored

--warn-execstack
Warn if the stack is executable

--no-warn-execstack
Do not warn if the stack is executable (default)

--no-warn-mismatch
Don't warn about mismatched input files

--warn-multiple-gp
Ignored

--warn-search-mismatch
Warn when skipping an incompatible library

--no-warn-search-mismatch
Don't warn when skipping an incompatible library

--warn-shared-textrel
Warn if text segment is not shareable

--no-warn-shared-textrel
Do not warn if text segment is not shareable (default)

--warn-unresolved-symbols
Report unresolved symbols as warnings

--error-unresolved-symbols
Report unresolved symbols as errors

--no-wchar-size-warning
(ARM only) Do not warn about objects with incompatible wchar_t
sizes

--whole-archive
Include all archive contents

--no-whole-archive
Include only needed archive contents

--wrap SYMBOL
Use wrapper functions for SYMBOL

-y SYMBOL, --trace-symbol SYMBOL
Trace references to symbol

--undefined-version
Allow unused version in script (default)

--no-undefined-version
Do not allow unused version in script

-Y PATH
Default search path for Solaris compatibility

-(, --start-group
Start a library search group

-), --end-group
End a library search group

--start-lib
Start a library

--end-lib
End a library

-fuse-ld
Ignored for GCC linker option compatibility

-z combreloc
Sort dynamic relocs

-z nocombreloc
Do not sort dynamic relocs

-z common-page-size=SIZE
Set common page size to SIZE

-z defs
Report undefined symbols (even with --shared)

-z execstack
Mark output as requiring executable stack

-z initfirst
Mark DSO to be initialized first at runtime

-z interpose
Mark object to interpose all DSOs but executable

-z lazy
Mark object for lazy runtime binding (default)

-z loadfltr
Mark object requiring immediate process

-z max-page-size=SIZE
Set maximum page size to SIZE

-z muldefs
Allow multiple definitions of symbols

-z nocopyreloc
Do not create copy relocs

-z nodefaultlib
Mark object not to use default search paths

-z nodelete
Mark DSO non-deletable at runtime

-z nodlopen
Mark DSO not available to dlopen

-z nodump
Mark DSO not available to dldump

-z noexecstack
Mark output as not requiring executable stack

-z now Mark object for immediate function binding

-z origin
Mark DSO to indicate that needs immediate $ORIGIN processing at
runtime

-z relro
Where possible mark variables read-only after relocation

-z norelro
Don't mark variables read-only after relocation

-z text
Do not permit relocations in read-only segments

-z notext
Permit relocations in read-only segments (default)

-z textoff
Permit relocations in read-only segments (default)

-z buildd
Dummy z option

ld.gold: supported targets: elf32-i386 elf32-i386-freebsd
elf32-i386-nacl elf32-x86-64 elf32-x86-64-freebsd elf32-x86-64-nacl
elf64-x86-64 elf64-x86-64-freebsd elf64-x86-64-nacl ld.gold: supported
emulations: elf_i386 elf_i386_nacl elf32_x86_64 elf32_x86_64_nacl
elf_x86_64 elf_x86_64_nacl

REPORTING BUGS


Report bugs to <http://www.sourceware.org/bugzilla/>

COPYRIGHT


Copyright © 2014 Free Software Foundation, Inc. This program is free
software; you may redistribute it under the terms of the GNU General
Public License version 3 or (at your option) a later version. This
program has absolutely no warranty.

gold (GNU Binutils for Ubuntu 2.25April12015 GOLD(1)

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