1.\" Copyright (c) 2011 Joseph Koshy. All rights reserved. 2.\" 3.\" Redistribution and use in source and binary forms, with or without 4.\" modification, are permitted provided that the following conditions 5.\" are met: 6.\" 1. Redistributions of source code must retain the above copyright 7.\" notice, this list of conditions and the following disclaimer. 8.\" 2. Redistributions in binary form must reproduce the above copyright 9.\" notice, this list of conditions and the following disclaimer in the 10.\" documentation and/or other materials provided with the distribution. 11.\" 12.\" THIS SOFTWARE IS PROVIDED BY JOSEPH KOSHY ``AS IS'' AND 13.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 14.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 15.\" ARE DISCLAIMED. IN NO EVENT SHALL JOSEPH KOSHY BE LIABLE 16.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 17.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 18.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 19.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 20.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 21.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 22.\" SUCH DAMAGE. 23.\" 24.\" $Id: strip.1 2069 2011-10-26 15:53:48Z jkoshy $ 25.\" 26.Dd September 17, 2011 27.Os 28.Dt STRIP 1 29.Sh NAME 30.Nm strip 31.Nd discard information from ELF objects 32.Sh SYNOPSIS 33.Nm 34.Op Fl d | Fl g | Fl S | Fl -strip-debug 35.Op Fl h | Fl -help 36.Op Fl -only-keep-debug 37.Op Fl o Ar outputfile | Fl -output-file= Ns Ar outputfile 38.Op Fl p | Fl -preserve-dates 39.Op Fl s | Fl -strip-all 40.Op Fl -strip-unneeded 41.Op Fl w | Fl -wildcard 42.Op Fl x | Fl -discard-all 43.Op Fl I Ar format | Fl -input-target= Ns Ar format 44.Op Fl K Ar symbol | Fl -keep-symbol= Ns Ar symbol 45.Op Fl N Ar symbol | Fl -strip-symbol= Ns Ar symbol 46.Op Fl O Ar format | Fl -output-target= Ns Ar format 47.Op Fl R Ar sectionname | Fl -remove-section= Ns Ar sectionname 48.Op Fl V | Fl -version 49.Op Fl X | Fl -discard-locals 50.Ar 51.Sh DESCRIPTION 52The 53.Nm 54utility is used to discard information from ELF objects. 55.Pp 56The 57.Nm 58utility supports the following options: 59.Bl -tag -width indent 60.It Fl d | Fl g | Fl S | Fl -strip-debug 61Remove debugging symbols only. 62.It Fl h | Fl -help 63Print a help message and exit. 64.It Fl -only-keep-debug 65Remove all content except that which would be used for debugging. 66.It Fl o Ar outputfile | Fl -output-file= Ns Ar outputfile 67Write the stripped object to file 68.Ar outputfile . 69The default behaviour is to modify objects in place. 70.It Fl p | Fl -preserve-dates 71Preserve the object's access and modification times. 72.It Fl s | Fl -strip-all 73Remove all symbols. 74.It Fl -strip-unneeded 75Remove all symbols not needed for further relocation processing. 76.It Fl w | Fl -wildcard 77Use shell-style patterns to name symbols. 78The following meta-characters are recognized in patterns: 79.Bl -tag -width "...." -compact 80.It Li ! 81If this is the first character of the pattern, invert the sense of the 82pattern match. 83.It Li * 84Matches any string of characters in a symbol name. 85.It Li ? 86Matches zero or one character in a symbol name. 87.It Li [ 88Mark the start of a character class. 89.It Li \e 90Remove the special meaning of the next character in the pattern. 91.It Li ] 92Mark the end of a character class. 93.El 94.It Fl x | Fl -discard-all 95Discard all non-global symbols. 96.It Fl I Ar format | Fl -input-target= Ns Ar format 97These options are accepted, but are ignored. 98.It Fl K Ar symbol | Fl -keep-symbol= Ns Ar symbol 99Keep the symbol 100.Ar symbol 101even if it would otherwise be stripped. 102This option may be specified multiple times. 103.It Fl N Ar symbol | Fl -strip-symbol= Ns Ar symbol 104Remove the symbol 105.Ar symbol 106even if it would otherwise have been kept. 107This option may be specified multiple times. 108.It Fl O Ar format | Fl -output-target= Ns Ar format 109Set the output file format to 110.Ar format . 111For the full list of supported formats, please see the documentation 112for function 113.Xr elftc_bfd_find_target 3 . 114.It Fl R Ar sectionname | Fl -remove-section= Ns Ar sectionname 115Remove the section named by the argument 116.Ar sectionname . 117This option may be specified multiple times. 118.It Fl V | Fl -version 119Print a version identifier and exit. 120.It Fl X | Fl -discard-locals 121Remove compiler-generated local symbols. 122.El 123.Sh DIAGNOSTICS 124.Ex -std 125.Sh SEE ALSO 126.Xr ar 1 , 127.Xr elfcopy 1 , 128.Xr ld 1 , 129.Xr mcs 1 , 130.Xr elf 3 , 131.Xr elftc_bfd_find_target 3 , 132.Xr fnmatch 3 133