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GOLD(1)				 User Commands			       GOLD(1)

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 differ‐
	      ently 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

       --pic-executable
	      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 compatibil‐
	      ity 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 2013 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 2.24April12014			       GOLD(1)
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