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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