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 3642 2018-10-14 14:24:28Z jkoshy $ 25.\" 26.Dd July 27, 2019 27.Dt STRIP 1 28.Os 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 the ELF objects 55specified by the arguments 56.Ar . 57.Pp 58If an explicit output file name is not specified using the 59.Fl o 60option, the 61.Nm 62utility will modify its input arguments in-place. 63.Pp 64The 65.Nm 66utility supports the following options: 67.Bl -tag -width indent 68.It Fl d | Fl g | Fl S | Fl -strip-debug 69Remove debugging symbols only. 70.It Fl h | Fl -help 71Print a help message and exit. 72.It Fl -only-keep-debug 73Remove all content except that which would be used for debugging. 74.It Fl o Ar outputfile | Fl -output-file= Ns Ar outputfile 75Write the stripped object to file 76.Ar outputfile 77instead of modifying the input in-place. 78Only a single input object should be specified if this option is used. 79.It Fl p | Fl -preserve-dates 80Preserve the object's access and modification times. 81.It Fl s | Fl -strip-all 82Remove all symbols. 83.It Fl -strip-unneeded 84Remove all symbols not needed for further relocation processing. 85.It Fl w | Fl -wildcard 86Use shell-style patterns to name symbols. 87The following meta-characters are recognized in patterns: 88.Bl -tag -width "...." -compact 89.It Li ! 90If this is the first character of the pattern, invert the sense of the 91pattern match. 92.It Li * 93Matches any string of characters in a symbol name. 94.It Li ? 95Matches zero or one character in a symbol name. 96.It Li [ 97Mark the start of a character class. 98.It Li \e 99Remove the special meaning of the next character in the pattern. 100.It Li ] 101Mark the end of a character class. 102.El 103.It Fl x | Fl -discard-all 104Discard all non-global symbols. 105.It Fl I Ar format | Fl -input-target= Ns Ar format 106These options are accepted, but are ignored. 107.It Fl K Ar symbol | Fl -keep-symbol= Ns Ar symbol 108Keep the symbol 109.Ar symbol 110even if it would otherwise be stripped. 111This option may be specified multiple times. 112.It Fl N Ar symbol | Fl -strip-symbol= Ns Ar symbol 113Remove the symbol 114.Ar symbol 115even if it would otherwise have been kept. 116This option may be specified multiple times. 117.It Fl O Ar format | Fl -output-target= Ns Ar format 118Set the output file format to 119.Ar format . 120For the full list of supported formats, please see the documentation 121for function 122.Xr elftc_bfd_find_target 3 . 123.It Fl R Ar sectionname | Fl -remove-section= Ns Ar sectionname 124Remove the section named by the argument 125.Ar sectionname . 126This option may be specified multiple times. 127.It Fl V | Fl -version 128Print a version identifier and exit. 129.It Fl X | Fl -discard-locals 130Remove compiler-generated local symbols. 131.El 132.Sh DIAGNOSTICS 133.Ex -std 134.Sh SEE ALSO 135.Xr ar 1 , 136.Xr elfcopy 1 , 137.Xr ld 1 , 138.Xr mcs 1 , 139.Xr elf 3 , 140.Xr elftc_bfd_find_target 3 , 141.Xr fnmatch 3 142