438 lines
16 KiB
Groff
438 lines
16 KiB
Groff
.\" -*- mode: troff; coding: utf-8 -*-
|
|
.\" Automatically generated by Pod::Man 5.01 (Pod::Simple 3.43)
|
|
.\"
|
|
.\" Standard preamble:
|
|
.\" ========================================================================
|
|
.de Sp \" Vertical space (when we can't use .PP)
|
|
.if t .sp .5v
|
|
.if n .sp
|
|
..
|
|
.de Vb \" Begin verbatim text
|
|
.ft CW
|
|
.nf
|
|
.ne \\$1
|
|
..
|
|
.de Ve \" End verbatim text
|
|
.ft R
|
|
.fi
|
|
..
|
|
.\" \*(C` and \*(C' are quotes in nroff, nothing in troff, for use with C<>.
|
|
.ie n \{\
|
|
. ds C` ""
|
|
. ds C' ""
|
|
'br\}
|
|
.el\{\
|
|
. ds C`
|
|
. ds C'
|
|
'br\}
|
|
.\"
|
|
.\" Escape single quotes in literal strings from groff's Unicode transform.
|
|
.ie \n(.g .ds Aq \(aq
|
|
.el .ds Aq '
|
|
.\"
|
|
.\" If the F register is >0, we'll generate index entries on stderr for
|
|
.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
|
|
.\" entries marked with X<> in POD. Of course, you'll have to process the
|
|
.\" output yourself in some meaningful fashion.
|
|
.\"
|
|
.\" Avoid warning from groff about undefined register 'F'.
|
|
.de IX
|
|
..
|
|
.nr rF 0
|
|
.if \n(.g .if rF .nr rF 1
|
|
.if (\n(rF:(\n(.g==0)) \{\
|
|
. if \nF \{\
|
|
. de IX
|
|
. tm Index:\\$1\t\\n%\t"\\$2"
|
|
..
|
|
. if !\nF==2 \{\
|
|
. nr % 0
|
|
. nr F 2
|
|
. \}
|
|
. \}
|
|
.\}
|
|
.rr rF
|
|
.\" ========================================================================
|
|
.\"
|
|
.IX Title "STRIP 1"
|
|
.TH STRIP 1 1980-01-01 binutils-2.40.90 "GNU Development Tools"
|
|
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
|
|
.\" way too many mistakes in technical documents.
|
|
.if n .ad l
|
|
.nh
|
|
.SH NAME
|
|
strip \- discard symbols and other data from object files
|
|
.SH SYNOPSIS
|
|
.IX Header "SYNOPSIS"
|
|
strip [\fB\-F\fR \fIbfdname\fR |\fB\-\-target=\fR\fIbfdname\fR]
|
|
[\fB\-I\fR \fIbfdname\fR |\fB\-\-input\-target=\fR\fIbfdname\fR]
|
|
[\fB\-O\fR \fIbfdname\fR |\fB\-\-output\-target=\fR\fIbfdname\fR]
|
|
[\fB\-s\fR|\fB\-\-strip\-all\fR]
|
|
[\fB\-S\fR|\fB\-g\fR|\fB\-d\fR|\fB\-\-strip\-debug\fR]
|
|
[\fB\-\-strip\-dwo\fR]
|
|
[\fB\-K\fR \fIsymbolname\fR|\fB\-\-keep\-symbol=\fR\fIsymbolname\fR]
|
|
[\fB\-M\fR|\fB\-\-merge\-notes\fR][\fB\-\-no\-merge\-notes\fR]
|
|
[\fB\-N\fR \fIsymbolname\fR |\fB\-\-strip\-symbol=\fR\fIsymbolname\fR]
|
|
[\fB\-w\fR|\fB\-\-wildcard\fR]
|
|
[\fB\-x\fR|\fB\-\-discard\-all\fR] [\fB\-X\fR |\fB\-\-discard\-locals\fR]
|
|
[\fB\-R\fR \fIsectionname\fR |\fB\-\-remove\-section=\fR\fIsectionname\fR]
|
|
[\fB\-\-keep\-section=\fR\fIsectionpattern\fR]
|
|
[\fB\-\-remove\-relocations=\fR\fIsectionpattern\fR]
|
|
[\fB\-\-strip\-section\-headers\fR]
|
|
[\fB\-o\fR \fIfile\fR] [\fB\-p\fR|\fB\-\-preserve\-dates\fR]
|
|
[\fB\-D\fR|\fB\-\-enable\-deterministic\-archives\fR]
|
|
[\fB\-U\fR|\fB\-\-disable\-deterministic\-archives\fR]
|
|
[\fB\-\-keep\-section\-symbols\fR]
|
|
[\fB\-\-keep\-file\-symbols\fR]
|
|
[\fB\-\-only\-keep\-debug\fR]
|
|
[\fB\-v\fR |\fB\-\-verbose\fR] [\fB\-V\fR|\fB\-\-version\fR]
|
|
[\fB\-\-help\fR] [\fB\-\-info\fR]
|
|
\fIobjfile\fR...
|
|
.SH DESCRIPTION
|
|
.IX Header "DESCRIPTION"
|
|
GNU \fBstrip\fR discards all symbols from object files
|
|
\&\fIobjfile\fR. The list of object files may include archives.
|
|
At least one object file must be given.
|
|
.PP
|
|
\&\fBstrip\fR modifies the files named in its argument,
|
|
rather than writing modified copies under different names.
|
|
.SH OPTIONS
|
|
.IX Header "OPTIONS"
|
|
.IP "\fB\-F\fR \fIbfdname\fR" 4
|
|
.IX Item "-F bfdname"
|
|
.PD 0
|
|
.IP \fB\-\-target=\fR\fIbfdname\fR 4
|
|
.IX Item "--target=bfdname"
|
|
.PD
|
|
Treat the original \fIobjfile\fR as a file with the object
|
|
code format \fIbfdname\fR, and rewrite it in the same format.
|
|
.IP \fB\-\-help\fR 4
|
|
.IX Item "--help"
|
|
Show a summary of the options to \fBstrip\fR and exit.
|
|
.IP \fB\-\-info\fR 4
|
|
.IX Item "--info"
|
|
Display a list showing all architectures and object formats available.
|
|
.IP "\fB\-I\fR \fIbfdname\fR" 4
|
|
.IX Item "-I bfdname"
|
|
.PD 0
|
|
.IP \fB\-\-input\-target=\fR\fIbfdname\fR 4
|
|
.IX Item "--input-target=bfdname"
|
|
.PD
|
|
Treat the original \fIobjfile\fR as a file with the object
|
|
code format \fIbfdname\fR.
|
|
.IP "\fB\-O\fR \fIbfdname\fR" 4
|
|
.IX Item "-O bfdname"
|
|
.PD 0
|
|
.IP \fB\-\-output\-target=\fR\fIbfdname\fR 4
|
|
.IX Item "--output-target=bfdname"
|
|
.PD
|
|
Replace \fIobjfile\fR with a file in the output format \fIbfdname\fR.
|
|
.IP "\fB\-R\fR \fIsectionname\fR" 4
|
|
.IX Item "-R sectionname"
|
|
.PD 0
|
|
.IP \fB\-\-remove\-section=\fR\fIsectionname\fR 4
|
|
.IX Item "--remove-section=sectionname"
|
|
.PD
|
|
Remove any section named \fIsectionname\fR 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 \fB*\fR may be given at the end of \fIsectionname\fR. If
|
|
so, then any section starting with \fIsectionname\fR will be removed.
|
|
.Sp
|
|
If the first character of \fIsectionpattern\fR is the exclamation
|
|
point (!) then matching sections will not be removed even if an
|
|
earlier use of \fB\-\-remove\-section\fR on the same command line
|
|
would otherwise remove it. For example:
|
|
.Sp
|
|
.Vb 1
|
|
\& \-\-remove\-section=.text.* \-\-remove\-section=!.text.foo
|
|
.Ve
|
|
.Sp
|
|
will remove all sections matching the pattern '.text.*', but will not
|
|
remove the section '.text.foo'.
|
|
.IP \fB\-\-keep\-section=\fR\fIsectionpattern\fR 4
|
|
.IX Item "--keep-section=sectionpattern"
|
|
When removing sections from the output file, keep sections that match
|
|
\&\fIsectionpattern\fR.
|
|
.IP \fB\-\-remove\-relocations=\fR\fIsectionpattern\fR 4
|
|
.IX Item "--remove-relocations=sectionpattern"
|
|
Remove relocations from the output file for any section matching
|
|
\&\fIsectionpattern\fR. 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 \fIsectionpattern\fR.
|
|
For example:
|
|
.Sp
|
|
.Vb 1
|
|
\& \-\-remove\-relocations=.text.*
|
|
.Ve
|
|
.Sp
|
|
will remove the relocations for all sections matching the patter
|
|
\&'.text.*'.
|
|
.Sp
|
|
If the first character of \fIsectionpattern\fR is the exclamation
|
|
point (!) then matching sections will not have their relocation
|
|
removed even if an earlier use of \fB\-\-remove\-relocations\fR on the
|
|
same command line would otherwise cause the relocations to be removed.
|
|
For example:
|
|
.Sp
|
|
.Vb 1
|
|
\& \-\-remove\-relocations=.text.* \-\-remove\-relocations=!.text.foo
|
|
.Ve
|
|
.Sp
|
|
will remove all relocations for sections matching the pattern
|
|
\&'.text.*', but will not remove relocations for the section
|
|
\&'.text.foo'.
|
|
.IP \fB\-\-strip\-section\-headers\fR 4
|
|
.IX Item "--strip-section-headers"
|
|
Strip section headers. This option is specific to ELF files. Implies
|
|
\&\fB\-\-strip\-all\fR and \fB\-\-merge\-notes\fR.
|
|
.IP \fB\-s\fR 4
|
|
.IX Item "-s"
|
|
.PD 0
|
|
.IP \fB\-\-strip\-all\fR 4
|
|
.IX Item "--strip-all"
|
|
.PD
|
|
Remove all symbols.
|
|
.IP \fB\-g\fR 4
|
|
.IX Item "-g"
|
|
.PD 0
|
|
.IP \fB\-S\fR 4
|
|
.IX Item "-S"
|
|
.IP \fB\-d\fR 4
|
|
.IX Item "-d"
|
|
.IP \fB\-\-strip\-debug\fR 4
|
|
.IX Item "--strip-debug"
|
|
.PD
|
|
Remove debugging symbols only.
|
|
.IP \fB\-\-strip\-dwo\fR 4
|
|
.IX Item "--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 \fBobjcopy\fR section
|
|
for more information.
|
|
.IP \fB\-\-strip\-unneeded\fR 4
|
|
.IX Item "--strip-unneeded"
|
|
Remove all symbols that are not needed for relocation processing in
|
|
addition to debugging symbols and sections stripped by
|
|
\&\fB\-\-strip\-debug\fR.
|
|
.IP "\fB\-K\fR \fIsymbolname\fR" 4
|
|
.IX Item "-K symbolname"
|
|
.PD 0
|
|
.IP \fB\-\-keep\-symbol=\fR\fIsymbolname\fR 4
|
|
.IX Item "--keep-symbol=symbolname"
|
|
.PD
|
|
When stripping symbols, keep symbol \fIsymbolname\fR even if it would
|
|
normally be stripped. This option may be given more than once.
|
|
.IP \fB\-M\fR 4
|
|
.IX Item "-M"
|
|
.PD 0
|
|
.IP \fB\-\-merge\-notes\fR 4
|
|
.IX Item "--merge-notes"
|
|
.IP \fB\-\-no\-merge\-notes\fR 4
|
|
.IX Item "--no-merge-notes"
|
|
.PD
|
|
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.
|
|
.IP "\fB\-N\fR \fIsymbolname\fR" 4
|
|
.IX Item "-N symbolname"
|
|
.PD 0
|
|
.IP \fB\-\-strip\-symbol=\fR\fIsymbolname\fR 4
|
|
.IX Item "--strip-symbol=symbolname"
|
|
.PD
|
|
Remove symbol \fIsymbolname\fR from the source file. This option may be
|
|
given more than once, and may be combined with strip options other than
|
|
\&\fB\-K\fR.
|
|
.IP "\fB\-o\fR \fIfile\fR" 4
|
|
.IX Item "-o file"
|
|
Put the stripped output in \fIfile\fR, rather than replacing the
|
|
existing file. When this argument is used, only one \fIobjfile\fR
|
|
argument may be specified.
|
|
.IP \fB\-p\fR 4
|
|
.IX Item "-p"
|
|
.PD 0
|
|
.IP \fB\-\-preserve\-dates\fR 4
|
|
.IX Item "--preserve-dates"
|
|
.PD
|
|
Preserve the access and modification dates of the file.
|
|
.IP \fB\-D\fR 4
|
|
.IX Item "-D"
|
|
.PD 0
|
|
.IP \fB\-\-enable\-deterministic\-archives\fR 4
|
|
.IX Item "--enable-deterministic-archives"
|
|
.PD
|
|
Operate in \fIdeterministic\fR mode. When copying archive members
|
|
and writing the archive index, use zero for UIDs, GIDs, timestamps,
|
|
and use consistent file modes for all files.
|
|
.Sp
|
|
If \fIbinutils\fR was configured with
|
|
\&\fB\-\-enable\-deterministic\-archives\fR, then this mode is on by default.
|
|
It can be disabled with the \fB\-U\fR option, below.
|
|
.IP \fB\-U\fR 4
|
|
.IX Item "-U"
|
|
.PD 0
|
|
.IP \fB\-\-disable\-deterministic\-archives\fR 4
|
|
.IX Item "--disable-deterministic-archives"
|
|
.PD
|
|
Do \fInot\fR operate in \fIdeterministic\fR mode. This is the
|
|
inverse of the \fB\-D\fR option, above: when copying archive members
|
|
and writing the archive index, use their actual UID, GID, timestamp,
|
|
and file mode values.
|
|
.Sp
|
|
This is the default unless \fIbinutils\fR was configured with
|
|
\&\fB\-\-enable\-deterministic\-archives\fR.
|
|
.IP \fB\-w\fR 4
|
|
.IX Item "-w"
|
|
.PD 0
|
|
.IP \fB\-\-wildcard\fR 4
|
|
.IX Item "--wildcard"
|
|
.PD
|
|
Permit regular expressions in \fIsymbolname\fRs used in other command
|
|
line options. The question mark (?), asterisk (*), backslash (\e) 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:
|
|
.Sp
|
|
.Vb 1
|
|
\& \-w \-K !foo \-K fo*
|
|
.Ve
|
|
.Sp
|
|
would cause strip to only keep symbols that start with the letters
|
|
"fo", but to discard the symbol "foo".
|
|
.IP \fB\-x\fR 4
|
|
.IX Item "-x"
|
|
.PD 0
|
|
.IP \fB\-\-discard\-all\fR 4
|
|
.IX Item "--discard-all"
|
|
.PD
|
|
Remove non-global symbols.
|
|
.IP \fB\-X\fR 4
|
|
.IX Item "-X"
|
|
.PD 0
|
|
.IP \fB\-\-discard\-locals\fR 4
|
|
.IX Item "--discard-locals"
|
|
.PD
|
|
Remove compiler-generated local symbols.
|
|
(These usually start with \fBL\fR or \fB.\fR.)
|
|
.IP \fB\-\-keep\-section\-symbols\fR 4
|
|
.IX Item "--keep-section-symbols"
|
|
When stripping a file, perhaps with \fB\-\-strip\-debug\fR or
|
|
\&\fB\-\-strip\-unneeded\fR, retain any symbols specifying section names,
|
|
which would otherwise get stripped.
|
|
.IP \fB\-\-keep\-file\-symbols\fR 4
|
|
.IX Item "--keep-file-symbols"
|
|
When stripping a file, perhaps with \fB\-\-strip\-debug\fR or
|
|
\&\fB\-\-strip\-unneeded\fR, retain any symbols specifying source file names,
|
|
which would otherwise get stripped.
|
|
.IP \fB\-\-only\-keep\-debug\fR 4
|
|
.IX Item "--only-keep-debug"
|
|
Strip a file, emptying the contents of any sections that would not be
|
|
stripped by \fB\-\-strip\-debug\fR and leaving the debugging sections
|
|
intact. In ELF files, this preserves all the note sections in the
|
|
output as well.
|
|
.Sp
|
|
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.
|
|
.Sp
|
|
The intention is that this option will be used in conjunction with
|
|
\&\fB\-\-add\-gnu\-debuglink\fR 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:
|
|
.RS 4
|
|
.IP "1.<Link the executable as normal. Assuming that it is called>" 4
|
|
.IX Item "1.<Link the executable as normal. Assuming that it is called>"
|
|
\&\f(CW\*(C`foo\*(C'\fR then...
|
|
.ie n .IP "1.<Run ""objcopy \-\-only\-keep\-debug foo foo.dbg"" to>" 4
|
|
.el .IP "1.<Run \f(CWobjcopy \-\-only\-keep\-debug foo foo.dbg\fR to>" 4
|
|
.IX Item "1.<Run objcopy --only-keep-debug foo foo.dbg to>"
|
|
create a file containing the debugging info.
|
|
.ie n .IP "1.<Run ""objcopy \-\-strip\-debug foo"" to create a>" 4
|
|
.el .IP "1.<Run \f(CWobjcopy \-\-strip\-debug foo\fR to create a>" 4
|
|
.IX Item "1.<Run objcopy --strip-debug foo to create a>"
|
|
stripped executable.
|
|
.ie n .IP "1.<Run ""objcopy \-\-add\-gnu\-debuglink=foo.dbg foo"">" 4
|
|
.el .IP "1.<Run \f(CWobjcopy \-\-add\-gnu\-debuglink=foo.dbg foo\fR>" 4
|
|
.IX Item "1.<Run objcopy --add-gnu-debuglink=foo.dbg foo>"
|
|
to add a link to the debugging info into the stripped executable.
|
|
.RE
|
|
.RS 4
|
|
.Sp
|
|
Note\-\-\-the choice of \f(CW\*(C`.dbg\*(C'\fR as an extension for the debug info
|
|
file is arbitrary. Also the \f(CW\*(C`\-\-only\-keep\-debug\*(C'\fR step is
|
|
optional. You could instead do this:
|
|
.IP "1.<Link the executable as normal.>" 4
|
|
.IX Item "1.<Link the executable as normal.>"
|
|
.PD 0
|
|
.ie n .IP "1.<Copy ""foo"" to ""foo.full"">" 4
|
|
.el .IP "1.<Copy \f(CWfoo\fR to \f(CWfoo.full\fR>" 4
|
|
.IX Item "1.<Copy foo to foo.full>"
|
|
.ie n .IP "1.<Run ""strip \-\-strip\-debug foo"">" 4
|
|
.el .IP "1.<Run \f(CWstrip \-\-strip\-debug foo\fR>" 4
|
|
.IX Item "1.<Run strip --strip-debug foo>"
|
|
.ie n .IP "1.<Run ""objcopy \-\-add\-gnu\-debuglink=foo.full foo"">" 4
|
|
.el .IP "1.<Run \f(CWobjcopy \-\-add\-gnu\-debuglink=foo.full foo\fR>" 4
|
|
.IX Item "1.<Run objcopy --add-gnu-debuglink=foo.full foo>"
|
|
.RE
|
|
.RS 4
|
|
.PD
|
|
.Sp
|
|
i.e., the file pointed to by the \fB\-\-add\-gnu\-debuglink\fR can be the
|
|
full executable. It does not have to be a file created by the
|
|
\&\fB\-\-only\-keep\-debug\fR switch.
|
|
.Sp
|
|
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.
|
|
.RE
|
|
.IP \fB\-V\fR 4
|
|
.IX Item "-V"
|
|
.PD 0
|
|
.IP \fB\-\-version\fR 4
|
|
.IX Item "--version"
|
|
.PD
|
|
Show the version number for \fBstrip\fR.
|
|
.IP \fB\-v\fR 4
|
|
.IX Item "-v"
|
|
.PD 0
|
|
.IP \fB\-\-verbose\fR 4
|
|
.IX Item "--verbose"
|
|
.PD
|
|
Verbose output: list all object files modified. In the case of
|
|
archives, \fBstrip \-v\fR lists all members of the archive.
|
|
.IP \fB@\fR\fIfile\fR 4
|
|
.IX Item "@file"
|
|
Read command-line options from \fIfile\fR. The options read are
|
|
inserted in place of the original @\fIfile\fR option. If \fIfile\fR
|
|
does not exist, or cannot be read, then the option will be treated
|
|
literally, and not removed.
|
|
.Sp
|
|
Options in \fIfile\fR 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 \fIfile\fR may itself contain additional
|
|
@\fIfile\fR options; any such options will be processed recursively.
|
|
.SH "SEE ALSO"
|
|
.IX Header "SEE ALSO"
|
|
the Info entries for \fIbinutils\fR.
|
|
.SH COPYRIGHT
|
|
.IX Header "COPYRIGHT"
|
|
Copyright (c) 1991\-2023 Free Software Foundation, Inc.
|
|
.PP
|
|
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".
|