binutils/doc/elfedit.1

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 Title "ELFEDIT 1"  ELFEDIT 1 2025-07-27 binutils-2.45 "GNU Development Tools"
 For nroff, turn off justification. Always turn off hyphenation; it makes
 way too many mistakes in technical documents.
.nh
 NAME
elfedit - update ELF header and program property of ELF files
 SYNOPSIS
 Header "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
 Header "DESCRIPTION" \fBelfedit 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.

\fIelffile... are the ELF files to be updated. 32-bit and
64-bit ELF files are supported, as are archives containing ELF files.
 OPTIONS
 Header "OPTIONS" The long and short forms of options, shown here as alternatives, are
equivalent. At least one of the --output-mach,
\fB--output-type, --output-osabi,
\fB--output-abiversion,
\fB--enable-x86-feature and --disable-x86-feature
options must be given.
 --input-mach=machine 4
 Item "--input-mach=machine" Set the matching input ELF machine type to machine. If
\fB--input-mach isn\*(Aqt specified, it will match any ELF
machine types.
.Sp
The supported ELF machine types are, i386, IAMCU, L1OM,
\fIK1OM and x86-64.
 --output-mach=machine 4
 Item "--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 4
 Item "--input-type=type" Set the matching input ELF file type to type. If
\fB--input-type isn\*(Aqt specified, it will match any ELF file types.
.Sp
The supported ELF file types are, rel, exec and dyn.
 --output-type=type 4
 Item "--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 4
 Item "--input-osabi=osabi" Set the matching input ELF file OSABI to osabi. If
\fB--input-osabi isn\*(Aqt specified, it will match any ELF OSABIs.
.Sp
The supported ELF OSABIs are, none, HPUX, NetBSD,
\fIGNU, Linux (alias for GNU),
\fISolaris, AIX, Irix,
\fIFreeBSD, TRU64, Modesto, OpenBSD, OpenVMS,
\fINSK, AROS and FenixOS.
 --output-osabi=osabi 4
 Item "--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 4
 Item "--input-abiversion=version" Set the matching input ELF file ABIVERSION to version.
\fIversion must be between 0 and 255. If --input-abiversion
isn\*(Aqt specified, it will match any ELF ABIVERSIONs.
 --output-abiversion=version 4
 Item "--output-abiversion=version" Change the ELF ABIVERSION in the ELF header to version.
\fIversion must be between 0 and 255.
 --enable-x86-feature=feature 4
 Item "--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
\fIlam_u57.
 --disable-x86-feature=feature 4
 Item "--disable-x86-feature=feature" Clear the feature bit in program property in exec or
\fIdyn ELF files with machine types of i386 or x86-64.
The supported features are the same as --enable-x86-feature.
.Sp
Note: --enable-x86-feature and --disable-x86-feature
are available only on hosts with mmap support.
 -v 4
 Item "-v"  0
 --version 4
 Item "--version"
Display the version number of elfedit.
 -h 4
 Item "-h"  0
 --help 4
 Item "--help"
Display the command-line options understood by elfedit.
 @file 4
 Item "@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.
.Sp
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"
 Header "SEE ALSO" \fBreadelf\|(1), and the Info entries for binutils.
 COPYRIGHT
 Header "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".