511 lines
18 KiB
Groff
511 lines
18 KiB
Groff
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.\" Automatically generated by Pod::Man 4.14 (Pod::Simple 3.42)
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.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
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.\" output yourself in some meaningful fashion.
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.\" Avoid warning from groff about undefined register 'F'.
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.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
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. \" troff and (daisy-wheel) nroff accents
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.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
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.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
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.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
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.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
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. \" corrections for vroff
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.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
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.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
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. \" for low resolution devices (crt and lpr)
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.if \n(.H>23 .if \n(.V>19 \
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\{\
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. ds : e
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. ds o a
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. ds d- d\h'-1'\(ga
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. ds D- D\h'-1'\(hy
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. ds th \o'bp'
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.\}
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.rm #[ #] #H #V #F C
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.\" ========================================================================
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.\"
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.IX Title "STRIP 1"
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.TH STRIP 1 "2023-02-11" "binutils-2.39" "GNU Development Tools"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.\" way too many mistakes in technical documents.
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.if n .ad l
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.nh
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.SH "NAME"
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strip \- discard symbols and other data from object files
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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strip [\fB\-F\fR \fIbfdname\fR |\fB\-\-target=\fR\fIbfdname\fR]
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[\fB\-I\fR \fIbfdname\fR |\fB\-\-input\-target=\fR\fIbfdname\fR]
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[\fB\-O\fR \fIbfdname\fR |\fB\-\-output\-target=\fR\fIbfdname\fR]
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[\fB\-s\fR|\fB\-\-strip\-all\fR]
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[\fB\-S\fR|\fB\-g\fR|\fB\-d\fR|\fB\-\-strip\-debug\fR]
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[\fB\-\-strip\-dwo\fR]
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[\fB\-K\fR \fIsymbolname\fR|\fB\-\-keep\-symbol=\fR\fIsymbolname\fR]
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[\fB\-M\fR|\fB\-\-merge\-notes\fR][\fB\-\-no\-merge\-notes\fR]
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[\fB\-N\fR \fIsymbolname\fR |\fB\-\-strip\-symbol=\fR\fIsymbolname\fR]
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[\fB\-w\fR|\fB\-\-wildcard\fR]
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[\fB\-x\fR|\fB\-\-discard\-all\fR] [\fB\-X\fR |\fB\-\-discard\-locals\fR]
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[\fB\-R\fR \fIsectionname\fR |\fB\-\-remove\-section=\fR\fIsectionname\fR]
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[\fB\-\-keep\-section=\fR\fIsectionpattern\fR]
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[\fB\-\-remove\-relocations=\fR\fIsectionpattern\fR]
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[\fB\-o\fR \fIfile\fR] [\fB\-p\fR|\fB\-\-preserve\-dates\fR]
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[\fB\-D\fR|\fB\-\-enable\-deterministic\-archives\fR]
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[\fB\-U\fR|\fB\-\-disable\-deterministic\-archives\fR]
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[\fB\-\-keep\-section\-symbols\fR]
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[\fB\-\-keep\-file\-symbols\fR]
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[\fB\-\-only\-keep\-debug\fR]
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[\fB\-v\fR |\fB\-\-verbose\fR] [\fB\-V\fR|\fB\-\-version\fR]
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[\fB\-\-help\fR] [\fB\-\-info\fR]
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\fIobjfile\fR...
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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\&\s-1GNU\s0 \fBstrip\fR discards all symbols from object files
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\&\fIobjfile\fR. The list of object files may include archives.
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At least one object file must be given.
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.PP
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\&\fBstrip\fR modifies the files named in its argument,
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rather than writing modified copies under different names.
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.SH "OPTIONS"
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.IX Header "OPTIONS"
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.IP "\fB\-F\fR \fIbfdname\fR" 4
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.IX Item "-F bfdname"
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.PD 0
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.IP "\fB\-\-target=\fR\fIbfdname\fR" 4
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.IX Item "--target=bfdname"
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.PD
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Treat the original \fIobjfile\fR as a file with the object
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code format \fIbfdname\fR, and rewrite it in the same format.
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.IP "\fB\-\-help\fR" 4
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.IX Item "--help"
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Show a summary of the options to \fBstrip\fR and exit.
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.IP "\fB\-\-info\fR" 4
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.IX Item "--info"
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Display a list showing all architectures and object formats available.
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.IP "\fB\-I\fR \fIbfdname\fR" 4
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.IX Item "-I bfdname"
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.PD 0
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.IP "\fB\-\-input\-target=\fR\fIbfdname\fR" 4
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.IX Item "--input-target=bfdname"
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.PD
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Treat the original \fIobjfile\fR as a file with the object
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code format \fIbfdname\fR.
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.IP "\fB\-O\fR \fIbfdname\fR" 4
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.IX Item "-O bfdname"
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.PD 0
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.IP "\fB\-\-output\-target=\fR\fIbfdname\fR" 4
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.IX Item "--output-target=bfdname"
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.PD
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Replace \fIobjfile\fR with a file in the output format \fIbfdname\fR.
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.IP "\fB\-R\fR \fIsectionname\fR" 4
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.IX Item "-R sectionname"
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.PD 0
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.IP "\fB\-\-remove\-section=\fR\fIsectionname\fR" 4
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.IX Item "--remove-section=sectionname"
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.PD
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Remove any section named \fIsectionname\fR from the output file, in
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addition to whatever sections would otherwise be removed. This
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option may be given more than once. Note that using this option
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inappropriately may make the output file unusable. The wildcard
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character \fB*\fR may be given at the end of \fIsectionname\fR. If
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so, then any section starting with \fIsectionname\fR will be removed.
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.Sp
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If the first character of \fIsectionpattern\fR is the exclamation
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point (!) then matching sections will not be removed even if an
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earlier use of \fB\-\-remove\-section\fR on the same command line
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would otherwise remove it. For example:
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.Sp
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.Vb 1
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\& \-\-remove\-section=.text.* \-\-remove\-section=!.text.foo
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.Ve
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.Sp
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will remove all sections matching the pattern '.text.*', but will not
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remove the section '.text.foo'.
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.IP "\fB\-\-keep\-section=\fR\fIsectionpattern\fR" 4
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.IX Item "--keep-section=sectionpattern"
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When removing sections from the output file, keep sections that match
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\&\fIsectionpattern\fR.
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.IP "\fB\-\-remove\-relocations=\fR\fIsectionpattern\fR" 4
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.IX Item "--remove-relocations=sectionpattern"
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Remove relocations from the output file for any section matching
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\&\fIsectionpattern\fR. This option may be given more than once. Note
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that using this option inappropriately may make the output file
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unusable. Wildcard characters are accepted in \fIsectionpattern\fR.
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For example:
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.Sp
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.Vb 1
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\& \-\-remove\-relocations=.text.*
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.Ve
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.Sp
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will remove the relocations for all sections matching the patter
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\&'.text.*'.
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.Sp
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If the first character of \fIsectionpattern\fR is the exclamation
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point (!) then matching sections will not have their relocation
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removed even if an earlier use of \fB\-\-remove\-relocations\fR on the
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same command line would otherwise cause the relocations to be removed.
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For example:
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.Sp
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.Vb 1
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\& \-\-remove\-relocations=.text.* \-\-remove\-relocations=!.text.foo
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.Ve
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.Sp
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will remove all relocations for sections matching the pattern
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\&'.text.*', but will not remove relocations for the section
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\&'.text.foo'.
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.IP "\fB\-s\fR" 4
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.IX Item "-s"
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.PD 0
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.IP "\fB\-\-strip\-all\fR" 4
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.IX Item "--strip-all"
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.PD
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Remove all symbols.
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.IP "\fB\-g\fR" 4
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.IX Item "-g"
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.PD 0
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.IP "\fB\-S\fR" 4
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.IX Item "-S"
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.IP "\fB\-d\fR" 4
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.IX Item "-d"
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.IP "\fB\-\-strip\-debug\fR" 4
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.IX Item "--strip-debug"
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.PD
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Remove debugging symbols only.
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.IP "\fB\-\-strip\-dwo\fR" 4
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.IX Item "--strip-dwo"
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Remove the contents of all \s-1DWARF\s0 .dwo sections, leaving the
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remaining debugging sections and all symbols intact.
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See the description of this option in the \fBobjcopy\fR section
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for more information.
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.IP "\fB\-\-strip\-unneeded\fR" 4
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.IX Item "--strip-unneeded"
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Remove all symbols that are not needed for relocation processing in
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addition to debugging symbols and sections stripped by
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\&\fB\-\-strip\-debug\fR.
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.IP "\fB\-K\fR \fIsymbolname\fR" 4
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.IX Item "-K symbolname"
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.PD 0
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.IP "\fB\-\-keep\-symbol=\fR\fIsymbolname\fR" 4
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.IX Item "--keep-symbol=symbolname"
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.PD
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When stripping symbols, keep symbol \fIsymbolname\fR even if it would
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normally be stripped. This option may be given more than once.
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.IP "\fB\-M\fR" 4
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.IX Item "-M"
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.PD 0
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.IP "\fB\-\-merge\-notes\fR" 4
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.IX Item "--merge-notes"
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.IP "\fB\-\-no\-merge\-notes\fR" 4
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.IX Item "--no-merge-notes"
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.PD
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For \s-1ELF\s0 files, attempt (or do not attempt) to reduce the size of any
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\&\s-1SHT_NOTE\s0 type sections by removing duplicate notes. The default is to
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|
|
attempt this reduction unless stripping debug or \s-1DWO\s0 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 \s-1UID, GID,\s0 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
|
||
|
|
\&\*(L"fo\*(R", but to discard the symbol \*(L"foo\*(R".
|
||
|
|
.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 \s-1ELF\s0 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 \s-1RAM\s0 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\-2022 Free Software Foundation, Inc.
|
||
|
|
.PP
|
||
|
|
Permission is granted to copy, distribute and/or modify this document
|
||
|
|
under the terms of the \s-1GNU\s0 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 \*(L"\s-1GNU\s0 Free Documentation License\*(R".
|