strip(1) — Linux manual page


STRIP(1)                    GNU Development Tools                   STRIP(1)

NAME         top

       strip - discard symbols and other data from object files

SYNOPSIS         top

       strip [-F bfdname |--target=bfdname]
             [-I bfdname |--input-target=bfdname]
             [-O bfdname |--output-target=bfdname]
             [-K symbolname|--keep-symbol=symbolname]
             [-N symbolname |--strip-symbol=symbolname]
             [-x|--discard-all] [-X |--discard-locals]
             [-R sectionname |--remove-section=sectionname]
             [-o file] [-p|--preserve-dates]
             [-v |--verbose] [-V|--version]
             [--help] [--info]

DESCRIPTION         top

       GNU strip discards all symbols from object files objfile.  The list
       of object files may include archives.  At least one object file must
       be given.

       strip modifies the files named in its argument, rather than writing
       modified copies under different names.

OPTIONS         top

       -F bfdname
           Treat the original objfile as a file with the object code format
           bfdname, and rewrite it in the same format.

           Show a summary of the options to strip and exit.

           Display a list showing all architectures and object formats

       -I bfdname
           Treat the original objfile as a file with the object code format

       -O bfdname
           Replace objfile with a file in the output format bfdname.

       -R sectionname
           Remove any section named sectionname from the output file, in
           addition to whatever sections would otherwise be removed.  This
           option may be given more than once.  Note that using this option
           inappropriately may make the output file unusable.  The wildcard
           character * may be given at the end of sectionname.  If so, then
           any section starting with sectionname will be removed.

           If the first character of sectionpattern is the exclamation point
           (!) then matching sections will not be removed even if an earlier
           use of --remove-section on the same command line would otherwise
           remove it.  For example:

                     --remove-section=.text.* --remove-section=!

           will remove all sections matching the pattern '.text.*', but will
           not remove the section ''.

           When removing sections from the output file, keep sections that
           match sectionpattern.

           Remove relocations from the output file for any section matching
           sectionpattern.  This option may be given more than once.  Note
           that using this option inappropriately may make the output file
           unusable.  Wildcard characters are accepted in sectionpattern.
           For example:


           will remove the relocations for all sections matching the patter

           If the first character of sectionpattern is the exclamation point
           (!) then matching sections will not have their relocation removed
           even if an earlier use of --remove-relocations on the same
           command line would otherwise cause the relocations to be removed.
           For example:

                     --remove-relocations=.text.* --remove-relocations=!

           will remove all relocations for sections matching the pattern
           '.text.*', but will not remove relocations for the section

           Remove all symbols.

           Remove debugging symbols only.

           Remove the contents of all DWARF .dwo sections, leaving the
           remaining debugging sections and all symbols intact.  See the
           description of this option in the objcopy section for more

           Remove all symbols that are not needed for relocation processing.

       -K symbolname
           When stripping symbols, keep symbol symbolname even if it would
           normally be stripped.  This option may be given more than once.

           For ELF files, attempt (or do not attempt) to reduce the size of
           any SHT_NOTE type sections by removing duplicate notes.  The
           default is to attempt this reduction unless stripping debug or
           DWO information.

       -N symbolname
           Remove symbol symbolname from the source file. This option may be
           given more than once, and may be combined with strip options
           other than -K.

       -o file
           Put the stripped output in file, rather than replacing the
           existing file.  When this argument is used, only one objfile
           argument may be specified.

           Preserve the access and modification dates of the file.

           Operate in deterministic mode.  When copying archive members and
           writing the archive index, use zero for UIDs, GIDs, timestamps,
           and use consistent file modes for all files.

           If binutils was configured with --enable-deterministic-archives,
           then this mode is on by default.  It can be disabled with the -U
           option, below.

           Do not operate in deterministic mode.  This is the inverse of the
           -D option, above: when copying archive members and writing the
           archive index, use their actual UID, GID, timestamp, and file
           mode values.

           This is the default unless binutils was configured with

           Permit regular expressions in symbolnames used in other command
           line options.  The question mark (?), asterisk (*), backslash (\)
           and square brackets ([]) operators can be used anywhere in the
           symbol name.  If the first character of the symbol name is the
           exclamation point (!) then the sense of the switch is reversed
           for that symbol.  For example:

                     -w -K !foo -K fo*

           would cause strip to only keep symbols that start with the
           letters "fo", but to discard the symbol "foo".

           Remove non-global symbols.

           Remove compiler-generated local symbols.  (These usually start
           with L or ..)

           When stripping a file, perhaps with --strip-debug or
           --strip-unneeded, retain any symbols specifying source file
           names, which would otherwise get stripped.

           Strip a file, emptying the contents of any sections that would
           not be stripped by --strip-debug and leaving the debugging
           sections intact.  In ELF files, this preserves all the note
           sections in the output as well.

           Note - the section headers of the stripped sections are
           preserved, including their sizes, but the contents of the section
           are discarded.  The section headers are preserved so that other
           tools can match up the debuginfo file with the real executable,
           even if that executable has been relocated to a different address

           The intention is that this option will be used in conjunction
           with --add-gnu-debuglink to create a two part executable.  One a
           stripped binary which will occupy less space in RAM and in a
           distribution and the second a debugging information file which is
           only needed if debugging abilities are required.  The suggested
           procedure to create these files is as follows:

           1.<Link the executable as normal.  Assuming that it is called>
               "foo" then...

           1.<Run "objcopy --only-keep-debug foo foo.dbg" to>
               create a file containing the debugging info.

           1.<Run "objcopy --strip-debug foo" to create a>
               stripped executable.

           1.<Run "objcopy --add-gnu-debuglink=foo.dbg foo">
               to add a link to the debugging info into the stripped

           Note---the choice of ".dbg" as an extension for the debug info
           file is arbitrary.  Also the "--only-keep-debug" step is
           optional.  You could instead do this:

           1.<Link the executable as normal.>
           1.<Copy "foo" to "foo.full">
           1.<Run "strip --strip-debug foo">
           1.<Run "objcopy --add-gnu-debuglink=foo.full foo">

           i.e., the file pointed to by the --add-gnu-debuglink can be the
           full executable.  It does not have to be a file created by the
           --only-keep-debug switch.

           Note---this switch is only intended for use on fully linked
           files.  It does not make sense to use it on object files where
           the debugging information may be incomplete.  Besides the
           gnu_debuglink feature currently only supports the presence of one
           filename containing debugging information, not multiple filenames
           on a one-per-object-file basis.

           Show the version number for strip.

           Verbose output: list all object files modified.  In the case of
           archives, strip -v lists all members of the archive.

           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         top

       the Info entries for binutils.

COPYRIGHT         top

       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".

COLOPHON         top

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binutils-2.35                    2020-07-24                         STRIP(1)

Pages that refer to this page: elf(5)warning::debuginfo(7stap)warning::symbols(7stap)