strip(1)
STRIP(1) GNU Development Tools STRIP(1)
NAME
strip - Discard symbols from object files.
SYNOPSIS
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...
DESCRIPTION
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
-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.
binutils-2.30 Last change: 2018-01-27 1
STRIP(1) GNU Development Tools STRIP(1)
-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
binutils-2.30 Last change: 2018-01-27 2
STRIP(1) GNU Development Tools STRIP(1)
--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
binutils-2.30 Last change: 2018-01-27 3
STRIP(1) GNU Development Tools STRIP(1)
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
binutils-2.30 Last change: 2018-01-27 4
STRIP(1) GNU Development Tools STRIP(1)
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:
called>
1.<Link the executable as normal. Assuming that is is
"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
binutils-2.30 Last change: 2018-01-27 5
STRIP(1) GNU Development Tools STRIP(1)
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.
SEE ALSO
the Info entries for binutils.
COPYRIGHT
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".
binutils-2.30 Last change: 2018-01-27 6
Man(1) output converted with
man2html