NAME

       elfedit - update ELF header and program property of ELF files

SYNOPSIS

       elfedit [--input-mach=machine]
               [--input-type=type]
               [--input-osabi=osabi]
               --output-mach=machine
               --output-type=type
               --output-osabi=osabi
               --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, --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.

       --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 and shstk.

       --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) 1991-2020 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".