1 llvm-strip - object stripping tool
2 ==================================
4 .. program:: llvm-strip
9 :program:`llvm-strip` [*options*] *inputs...*
14 :program:`llvm-strip` is a tool to strip sections and symbols from object files.
15 If no other stripping or remove options are specified, :option:`--strip-all`
18 By default, the input files are modified in-place. If "-" is specified for the
19 input file, the input is read from the program's standard input stream.
21 If the input is an archive, any requested operations will be applied to each
22 archive member individually.
24 The tool is still in active development, but in most scenarios it works as a
25 drop-in replacement for GNU's :program:`strip`.
27 GENERIC AND CROSS-PLATFORM OPTIONS
28 ----------------------------------
30 The following options are either agnostic of the file format, or apply to
31 multiple file formats.
33 .. option:: --disable-deterministic-archives, -U
35 Use real values for UIDs, GIDs and timestamps when updating archive member
38 .. option:: --discard-all, -x
40 Remove most local symbols from the output. Different file formats may limit
41 this to a subset of the local symbols. For example, file and section symbols in
42 ELF objects will not be discarded.
44 .. option:: --enable-deterministic-archives, -D
46 Enable deterministic mode when stripping archives, i.e. use 0 for archive member
47 header UIDs, GIDs and timestamp fields. On by default.
49 .. option:: --help, -h
51 Print a summary of command line options.
53 .. option:: --no-strip-all
59 Write output to <file>. Multiple input files cannot be used in combination
64 If specified, symbol and section names specified by other switches are treated
65 as extended POSIX regular expression patterns.
67 .. option:: --remove-section <section>, -R
69 Remove the specified section from the output. Can be specified multiple times
70 to remove multiple sections simultaneously.
72 .. option:: --strip-all-gnu
74 Remove all symbols, debug sections and relocations from the output. This option
75 is equivalent to GNU :program:`strip`'s ``--strip-all`` switch.
77 .. option:: --strip-all, -S
79 For ELF objects, remove from the output all symbols and non-alloc sections not
80 within segments, except for .gnu.warning sections and the section name table.
82 For COFF objects, remove all symbols, debug sections, and relocations from the
85 .. option:: --strip-debug, -g
87 Remove all debug sections.
89 .. option:: --strip-sections
91 Remove all section headers and all sections not in segments.
93 .. option:: --strip-symbol <symbol>, -N
95 Remove all symbols named ``<symbol>`` from the output. Can be specified
96 multiple times to remove multiple symbols.
98 .. option:: --strip-unneeded
100 Remove from the output all local or undefined symbols that are not required by
101 relocations. Also remove all debug sections.
103 .. option:: --version, -V
105 Display the version of the :program:`llvm-strip` executable.
109 Read command-line options and commands from response file `<FILE>`.
111 COFF-SPECIFIC OPTIONS
112 ---------------------
114 The following options are implemented only for COFF objects. If used with other
115 objects, :program:`llvm-strip` will either emit an error or silently ignore
118 .. option:: --only-keep-debug
120 Remove the contents of non-debug sections from the output, but keep the section
126 The following options are implemented only for ELF objects. If used with other
127 objects, :program:`llvm-strip` will either emit an error or silently ignore
130 .. option:: --allow-broken-links
132 Allow :program:`llvm-strip` to remove sections even if it would leave invalid
133 section references. Any invalid sh_link fields will be set to zero.
135 .. option:: --discard-locals, -X
137 Remove local symbols starting with ".L" from the output.
139 .. option:: --keep-file-symbols
141 Keep symbols of type `STT_FILE`, even if they would otherwise be stripped.
143 .. option:: --keep-section <section>
145 When removing sections from the output, do not remove sections named
146 ``<section>``. Can be specified multiple times to keep multiple sections.
148 .. option:: --keep-symbol <symbol>, -K
150 Do not remove symbols named ``<symbol>``. Can be specified multiple times to
151 keep multiple symbols.
153 .. option:: --preserve-dates, -p
155 Preserve access and modification timestamps.
160 :program:`llvm-strip` exits with a non-zero exit code if there is an error.
161 Otherwise, it exits with code 0.
166 To report bugs, please visit <http://llvm.org/bugs/>.
171 :manpage:`llvm-objcopy(1)`