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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SEE ALSO | COPYRIGHT | COLOPHON |
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STRIP(1) GNU Development Tools STRIP(1)
strip - Discard symbols from object files.
strip [-F bfdname |--target=bfdname]
[-I bfdname |--input-target=bfdname]
[-O bfdname |--output-target=bfdname]
[-s|--strip-all]
[-S|-g|-d|--strip-debug]
[--strip-dwo]
[-K symbolname|--keep-symbol=symbolname]
[-M|--merge-notes][--no-merge-notes]
[-N symbolname |--strip-symbol=symbolname]
[-w|--wildcard]
[-x|--discard-all] [-X |--discard-locals]
[-R sectionname |--remove-section=sectionname]
[--remove-relocations=sectionpattern]
[-o file] [-p|--preserve-dates]
[-D|--enable-deterministic-archives]
[-U|--disable-deterministic-archives]
[--keep-file-symbols]
[--only-keep-debug]
[-v |--verbose] [-V|--version]
[--help] [--info]
objfile...
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.
-F bfdname
--target=bfdname
Treat the original objfile as a file with the object code format
bfdname, and rewrite it in the same format.
--help
Show a summary of the options to strip and exit.
--info
Display a list showing all architectures and object formats
available.
-I bfdname
--input-target=bfdname
Treat the original objfile as a file with the object code format
bfdname.
-O bfdname
--output-target=bfdname
Replace objfile with a file in the output format bfdname.
-R sectionname
--remove-section=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=!.text.foo
will remove all sections matching the pattern '.text.*', but will
not remove the section '.text.foo'.
--remove-relocations=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:
--remove-relocations=.text.*
will remove the relocations for all sections matching the patter
'.text.*'.
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=!.text.foo
will remove all relocations for sections matching the pattern
'.text.*', but will not remove relocations for the section
'.text.foo'.
-s
--strip-all
Remove all symbols.
-g
-S
-d
--strip-debug
Remove debugging symbols only.
--strip-dwo
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
information.
--strip-unneeded
Remove all symbols that are not needed for relocation processing.
-K symbolname
--keep-symbol=symbolname
When stripping symbols, keep symbol symbolname even if it would
normally be stripped. This option may be given more than once.
-M
--merge-notes
--no-merge-notes
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.
-N symbolname
--strip-symbol=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.
-p
--preserve-dates
Preserve the access and modification dates of the file.
-D
--enable-deterministic-archives
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.
-U
--disable-deterministic-archives
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
--enable-deterministic-archives.
-w
--wildcard
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".
-x
--discard-all
Remove non-global symbols.
-X
--discard-locals
Remove compiler-generated local symbols. (These usually start
with L or ..)
--keep-file-symbols
When stripping a file, perhaps with --strip-debug or
--strip-unneeded, retain any symbols specifying source file
names, which would otherwise get stripped.
--only-keep-debug
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
space.
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 is 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
executable.
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.
-V
--version
Show the version number for strip.
-v
--verbose
Verbose output: list all object files modified. In the case of
archives, strip -v lists all members of the archive.
@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.
the Info entries for binutils.
Copyright (c) 1991-2018 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".
This page is part of the binutils (a collection of tools for working
with executable binaries) project. Information about the project can
be found at ⟨http://www.gnu.org/software/binutils/⟩. If you have a
bug report for this manual page, see
⟨http://sourceware.org/bugzilla/enter_bug.cgi?product=binutils⟩.
This page was obtained from the tarball binutils-2.30.tar.gz fetched
from ⟨https://ftp.gnu.org/gnu/binutils/⟩ on 2018-02-02. If you dis‐
cover any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page, or
you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a mail
to man-pages@man7.org
binutils-2.30 2018-01-27 STRIP(1)
Pages that refer to this page: elf(5), warning::debuginfo(7stap), warning::symbols(7stap)
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