objcopy

Section: GNU Development Tools (1)
Updated: June 1993
Index Return to Main Contents

NAME

objcopy - copy and translate object files

SYNOPSIS

objcopy: [-F bfdname | --target=bfdname] [-I bfdname | --input-target=bfdname] [-O bfdname | --output-target=bfdname] [-R sectionname | --remove-section=sectionname] [-S | --strip-all] [-g | --strip-debug] [-x | --discard-all] [-X | --discard-locals] [-b byte| --byte=byte] [-i interleave| --interleave=interleave] [-v | --verbose] [-V | --version] [--help] infile [outfile]

DESCRIPTION

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 knows about all the formats BFD knows about, and thus is able to recognize most formats without being told explicitly.

infile and outfile are the source and output files respectively. If you do not specify outfile, objcopy creates a temporary file and destructively renames the result with the name of the input file.

OPTIONS

-I bfdname, --input-target=bfdname: Consider the source file's object format to be bfdname, rather than attempting to deduce it.
-O bfdname, --output-target=bfdname: Write the output file using the object format bfdname.
-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.
-R sectionname, --remove-section=sectionname: Remove the named section from the 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.
-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 the interleave-1. This option is useful for creating files to program ROMs. It is typically used with an srec output target.
-i interleave, --interleave=interleave: Only copy one out of every interleave bytes. Which one to copy is selected by the -b or --byte option. The default is 4. The interleave is ignored if neither -b nor --byte is given.
-v, --verbose: Verbose output: list all object files modified. In the case of archives, "objcopy -V" lists all members of the archive.
-V, --version: Show the version number of objcopy and exit.
--help: Show a summary of the options to objcopy and exit.

COPYING

Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies.

Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one.

Permission is granted to copy and distribute translations of this manual into another language, under the above conditions for modified versions, except that this permission notice may be included in translations approved by the Free Software Foundation instead of in the original English.

This document was created by man2html, using the manual pages.
Time: 12:13:48 GMT, September 19, 2022