(binutils.info) objcopy

 
 objcopy
 *******
 
      objcopy [ -F BFDNAME | --target=BFDNAME ]
              [ -I BFDNAME | --input-target=BFDNAME ]
              [ -O BFDNAME | --output-target=BFDNAME ]
              [ -S | --strip-all ]  [ -g | --strip-debug ]
              [ -K SYMBOLNAME | --keep-symbol=SYMBOLNAME ]
              [ -N SYMBOLNAME | --strip-symbol=SYMBOLNAME ]
              [ -L SYMBOLNAME | --localize-symbol=SYMBOLNAME ]
              [ -W SYMBOLNAME | --weaken-symbol=SYMBOLNAME ]
              [ -x | --discard-all ]  [ -X | --discard-locals ]
              [ -b BYTE | --byte=BYTE ]
              [ -i INTERLEAVE | --interleave=INTERLEAVE ]
              [ -j SECTIONNAME | --only-section=SECTIONNAME ]
              [ -R SECTIONNAME | --remove-section=SECTIONNAME ]
              [ -p | --preserve-dates ] [ --debugging ]
              [ --gap-fill=VAL ] [ --pad-to=ADDRESS ]
              [ --set-start=VAL ] [ --adjust-start=INCR ]
              [ --change-addresses=INCR ]
              [ --change-section-address SECTION{=,+,-}VAL ]
              [ --change-section-lma SECTION{=,+,-}VAL ]
              [ --change-section-vma SECTION{=,+,-}VAL ]
              [ --change-warnings ] [ --no-change-warnings ]
              [ --set-section-flags SECTION=FLAGS ]
              [ --add-section SECTIONNAME=FILENAME ]
              [ --change-leading-char ] [ --remove-leading-char ]
              [ --redefine-sym OLD=NEW ] [ --weaken ]
              [ -v | --verbose ] [ -V | --version ]  [ --help ]
              INFILE [OUTFILE]
 
    The GNU `objcopy' utility copies the contents of an object file to
 another.  `objcopy' uses the GNU BFD Library to read and write the
 object files.  It can write the destination object file in a format
 different from that of the source object file.  The exact behavior of
 `objcopy' is controlled by command-line options.
 
    `objcopy' creates temporary files to do its translations and deletes
 them afterward.  `objcopy' uses BFD to do all its translation work; it
 has access to all the formats described in BFD and thus is able to
 recognize most formats without being told explicitly.   BFD
 (ld.info)BFD.
 
    `objcopy' can be used to generate S-records by using an output
 target of `srec' (e.g., use `-O srec').
 
    `objcopy' can be used to generate a raw binary file by using an
 output target of `binary' (e.g., use `-O binary').  When `objcopy'
 generates a raw binary file, it will essentially produce a memory dump
 of the contents of the input object file.  All symbols and relocation
 information will be discarded.  The memory dump will start at the load
 address of the lowest section copied into the output file.
 
    When generating an S-record or a raw binary file, it may be helpful
 to use `-S' to remove sections containing debugging information.  In
 some cases `-R' will be useful to remove sections which contain
 information that is not needed by the binary file.
 
 `INFILE'
 `OUTFILE'
      The input and output files, respectively.  If you do not specify
      OUTFILE, `objcopy' creates a temporary file and destructively
      renames the result with the name of INFILE.
 
 `-I BFDNAME'
 `--input-target=BFDNAME'
      Consider the source file's object format to be BFDNAME, rather than
      attempting to deduce it.   Target Selection, for more
      information.
 
 `-O BFDNAME'
 `--output-target=BFDNAME'
      Write the output file using the object format BFDNAME.  
      Target Selection, for more information.
 
 `-F BFDNAME'
 `--target=BFDNAME'
      Use BFDNAME as the object format for both the input and the output
      file; i.e., simply transfer data from source to destination with no
      translation.   Target Selection, for more information.
 
 `-j SECTIONNAME'
 `--only-section=SECTIONNAME'
      Copy only the named section from the input file to the output file.
      This option may be given more than once.  Note that using this
      option inappropriately may make the output file unusable.
 
 `-R SECTIONNAME'
 `--remove-section=SECTIONNAME'
      Remove any section named SECTIONNAME from the output file.  This
      option may be given more than once.  Note that using this option
      inappropriately may make the output file unusable.
 
 `-S'
 `--strip-all'
      Do not copy relocation and symbol information from the source file.
 
 `-g'
 `--strip-debug'
      Do not copy debugging symbols from the source file.
 
 `--strip-unneeded'
      Strip all symbols that are not needed for relocation processing.
 
 `-K SYMBOLNAME'
 `--keep-symbol=SYMBOLNAME'
      Copy only symbol SYMBOLNAME from the source file.  This option may
      be given more than once.
 
 `-N SYMBOLNAME'
 `--strip-symbol=SYMBOLNAME'
      Do not copy symbol SYMBOLNAME from the source file.  This option
      may be given more than once.
 
 `-L SYMBOLNAME'
 `--localize-symbol=SYMBOLNAME'
      Make symbol SYMBOLNAME local to the file, so that it is not
      visible externally.  This option may be given more than once.
 
 `-W SYMBOLNAME'
 `--weaken-symbol=SYMBOLNAME'
      Make symbol SYMBOLNAME weak. This option may be given more than
      once.
 
 `-x'
 `--discard-all'
      Do not copy non-global symbols from the source file.
 
 `-X'
 `--discard-locals'
      Do not copy compiler-generated local symbols.  (These usually
      start with `L' or `.'.)
 
 `-b BYTE'
 `--byte=BYTE'
      Keep only every BYTEth byte of the input file (header data is not
      affected).  BYTE can be in the range from 0 to INTERLEAVE-1, where
      INTERLEAVE is given by the `-i' or `--interleave' option, or the
      default of 4.  This option is useful for creating files to program
      ROM.  It is typically used with an `srec' output target.
 
 `-i INTERLEAVE'
 `--interleave=INTERLEAVE'
      Only copy one out of every INTERLEAVE bytes.  Select which byte to
      copy with the -B or `--byte' option.  The default is 4.  `objcopy'
      ignores this option if you do not specify either `-b' or `--byte'.
 
 `-p'
 `--preserve-dates'
      Set the access and modification dates of the output file to be the
      same as those of the input file.
 
 `--debugging'
      Convert debugging information, if possible.  This is not the
      default because only certain debugging formats are supported, and
      the conversion process can be time consuming.
 
 `--gap-fill VAL'
      Fill gaps between sections with VAL.  This operation applies to
      the _load address_ (LMA) of the sections.  It is done by increasing
      the size of the section with the lower address, and filling in the
      extra space created with VAL.
 
 `--pad-to ADDRESS'
      Pad the output file up to the load address ADDRESS.  This is done
      by increasing the size of the last section.  The extra space is
      filled in with the value specified by `--gap-fill' (default zero).
 
 `--set-start VAL'
      Set the start address of the new file to VAL.  Not all object file
      formats support setting the start address.
 
 `--change-start INCR'
 `--adjust-start INCR'
      Change the start address by adding INCR.  Not all object file
      formats support setting the start address.
 
 `--change-addresses INCR'
 `--adjust-vma INCR'
      Change the VMA and LMA addresses of all sections, as well as the
      start address, by adding INCR.  Some object file formats do not
      permit section addresses to be changed arbitrarily.  Note that
      this does not relocate the sections; if the program expects
      sections to be loaded at a certain address, and this option is
      used to change the sections such that they are loaded at a
      different address, the program may fail.
 
 `--change-section-address SECTION{=,+,-}VAL'
 `--adjust-section-vma SECTION{=,+,-}VAL'
      Set or change both the VMA address and the LMA address of the named
      SECTION.  If `=' is used, the section address is set to VAL.
      Otherwise, VAL is added to or subtracted from the section address.
      See the comments under `--change-addresses', above. If SECTION
      does not exist in the input file, a warning will be issued, unless
      `--no-change-warnings' is used.
 
 `--change-section-lma SECTION{=,+,-}VAL'
      Set or change the LMA address of the named SECTION.  The LMA
      address is the address where the section will be loaded into
      memory at program load time.  Normally this is the same as the VMA
      address, which is the address of the section at program run time,
      but on some systems, especially those where a program is held in
      ROM, the two can be different.  If `=' is used, the section
      address is set to VAL.  Otherwise, VAL is added to or subtracted
      from the section address.  See the comments under
      `--change-addresses', above.  If SECTION does not exist in the
      input file, a warning will be issued, unless
      `--no-change-warnings' is used.
 
 `--change-section-vma SECTION{=,+,-}VAL'
      Set or change the VMA address of the named SECTION.  The VMA
      address is the address where the section will be located once the
      program has started executing.  Normally this is the same as the
      LMA address, which is the address where the section will be loaded
      into memory, but on some systems, especially those where a program
      is held in ROM, the two can be different.  If `=' is used, the
      section address is set to VAL.  Otherwise, VAL is added to or
      subtracted from the section address.  See the comments under
      `--change-addresses', above.  If SECTION does not exist in the
      input file, a warning will be issued, unless
      `--no-change-warnings' is used.
 
 `--change-warnings'
 `--adjust-warnings'
      If `--change-section-address' or `--change-section-lma' or
      `--change-section-vma' is used, and the named section does not
      exist, issue a warning.  This is the default.
 
 `--no-change-warnings'
 `--no-adjust-warnings'
      Do not issue a warning if `--change-section-address' or
      `--adjust-section-lma' or `--adjust-section-vma' is used, even if
      the named section does not exist.
 
 `--set-section-flags SECTION=FLAGS'
      Set the flags for the named section.  The FLAGS argument is a
      comma separated string of flag names.  The recognized names are
      `alloc', `contents', `load', `noload', `readonly', `code', `data',
      `rom', `share', and `debug'.  You can set the `contents' flag for
      a section which does not have contents, but it is not meaningful
      to clear the `contents' flag of a section which does have
      contents-just remove the section instead.  Not all flags are
      meaningful for all object file formats.
 
 `--add-section SECTIONNAME=FILENAME'
      Add a new section named SECTIONNAME while copying the file.  The
      contents of the new section are taken from the file FILENAME.  The
      size of the section will be the size of the file.  This option only
      works on file formats which can support sections with arbitrary
      names.
 
 `--change-leading-char'
      Some object file formats use special characters at the start of
      symbols.  The most common such character is underscore, which
      compilers often add before every symbol.  This option tells
      `objcopy' to change the leading character of every symbol when it
      converts between object file formats.  If the object file formats
      use the same leading character, this option has no effect.
      Otherwise, it will add a character, or remove a character, or
      change a character, as appropriate.
 
 `--remove-leading-char'
      If the first character of a global symbol is a special symbol
      leading character used by the object file format, remove the
      character.  The most common symbol leading character is
      underscore.  This option will remove a leading underscore from all
      global symbols.  This can be useful if you want to link together
      objects of different file formats with different conventions for
      symbol names.  This is different from `--change-leading-char'
      because it always changes the symbol name when appropriate,
      regardless of the object file format of the output file.
 
 `--redefine-sym OLD=NEW'
      Change the name of a symbol OLD, to NEW.  This can be useful when
      one is trying link two things together for which you have no
      source, and there are name collisions.
 
 `--weaken'
      Change all global symbols in the file to be weak.  This can be
      useful when building an object which will be linked against other
      objects using the `-R' option to the linker.  This option is only
      effective when using an object file format which supports weak
      symbols.
 
 `-V'
 `--version'
      Show the version number of `objcopy'.
 
 `-v'
 `--verbose'
      Verbose output: list all object files modified.  In the case of
      archives, `objcopy -V' lists all members of the archive.
 
 `--help'
      Show a summary of the options to `objcopy'.
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