ELFEDIT(1)		     GNU Development Tools		    ELFEDIT(1)


NAME
       elfedit - update ELF header and program property of ELF files

SYNOPSIS
       elfedit [--input-mach=machine]
	       [--input-type=type]
	       [--input-osabi=osabi]
	       [--input-abiversion=version]
	       --output-mach=machine
	       --output-type=type
	       --output-osabi=osabi
	       --output-abiversion=version
	       --enable-x86-feature=feature
	       --disable-x86-feature=feature
	       [-v|--version]
	       [-h|--help]
	       elffile...

DESCRIPTION
       elfedit updates the ELF header and program property of ELF files which
       have the matching ELF machine and file types.  The options control how
       and which fields in the ELF header and program property should be
       updated.

       elffile... are the ELF files to be updated.  32-bit and 64-bit ELF
       files are supported, as are archives containing ELF files.

OPTIONS
       The long and short forms of options, shown here as alternatives, are
       equivalent. At least one of the --output-mach, --output-type,
       --output-osabi, --output-abiversion, --enable-x86-feature and
       --disable-x86-feature options must be given.

       --input-mach=machine
	   Set the matching input ELF machine type to machine.	If
	   --input-mach isn't specified, it will match any ELF machine types.

	   The supported ELF machine types are, i386, IAMCU, L1OM, K1OM and
	   x86-64.

       --output-mach=machine
	   Change the ELF machine type in the ELF header to machine.  The
	   supported ELF machine types are the same as --input-mach.

       --input-type=type
	   Set the matching input ELF file type to type.  If --input-type
	   isn't specified, it will match any ELF file types.

	   The supported ELF file types are, rel, exec and dyn.

       --output-type=type
	   Change the ELF file type in the ELF header to type.	The supported
	   ELF types are the same as --input-type.

       --input-osabi=osabi
	   Set the matching input ELF file OSABI to osabi.  If --input-osabi
	   isn't specified, it will match any ELF OSABIs.

	   The supported ELF OSABIs are, none, HPUX, NetBSD, GNU, Linux (alias
	   for GNU), Solaris, AIX, Irix, FreeBSD, TRU64, Modesto, OpenBSD,
	   OpenVMS, NSK, AROS and FenixOS.

       --output-osabi=osabi
	   Change the ELF OSABI in the ELF header to osabi.  The supported ELF
	   OSABI are the same as --input-osabi.

       --input-abiversion=version
	   Set the matching input ELF file ABIVERSION to version.  version
	   must be between 0 and 255.  If --input-abiversion isn't specified,
	   it will match any ELF ABIVERSIONs.

       --output-abiversion=version
	   Change the ELF ABIVERSION in the ELF header to version.  version
	   must be between 0 and 255.

       --enable-x86-feature=feature
	   Set the feature bit in program property in exec or dyn ELF files
	   with machine types of i386 or x86-64.  The supported features are,
	   ibt, shstk, lam_u48 and lam_u57.

       --disable-x86-feature=feature
	   Clear the feature bit in program property in exec or dyn ELF files
	   with machine types of i386 or x86-64.  The supported features are
	   the same as --enable-x86-feature.

	   Note: --enable-x86-feature and --disable-x86-feature are available
	   only on hosts with mmap support.

       -v
       --version
	   Display the version number of elfedit.

       -h
       --help
	   Display the command-line options understood by elfedit.

       @file
	   Read command-line options from file.	 The options read are inserted
	   in place of the original @file option.  If file does not exist, or
	   cannot be read, then the option will be treated literally, and not
	   removed.

	   Options in file are separated by whitespace.	 A whitespace
	   character may be included in an option by surrounding the entire
	   option in either single or double quotes.  Any character (including
	   a backslash) may be included by prefixing the character to be
	   included with a backslash.  The file may itself contain additional
	   @file options; any such options will be processed recursively.

SEE ALSO
       readelf(1), and the Info entries for binutils.

COPYRIGHT
       Copyright (c) 1991-2025 Free Software Foundation, Inc.

       Permission is granted to copy, distribute and/or modify this document
       under the terms of the GNU Free Documentation License, Version 1.3 or
       any later version published by the Free Software Foundation; with no
       Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
       Texts.  A copy of the license is included in the section entitled "GNU
       Free Documentation License".

binutils-2.45.0			  2025-08-13			    ELFEDIT(1)