xref: /freebsd/usr.sbin/crunch/crunchide/crunchide.1 (revision 7f3dea244c40159a41ab22da77a434d7c5b5e85a)
1.\"
2.\" Copyright (c) 1994 University of Maryland
3.\" All Rights Reserved.
4.\"
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6.\" documentation for any purpose is hereby granted without fee, provided that
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22.\" Author: James da Silva, Systems Design and Analysis Group
23.\"			   Computer Science Department
24.\"			   University of Maryland at College Park
25.\"     $Id$
26.\"
27.Dd June 14, 1994
28.Dt CRUNCHIDE 1
29.Os BSD 4
30.Sh NAME
31.Nm crunchide
32.Nd hides symbol names from ld, for crunching programs together
33.Sh SYNOPSIS
34.Nm crunchide
35.Op Fl f Ar keep-list-file
36.Op Fl k Ar keep-symbol
37.Op Ar object-file ...
38.Sh DESCRIPTION
39
40.Nm Crunchide
41hides the global symbols of
42.Ar object-file
43such that they are ignored by subsequent runs of the linker,
44.Xr ld 1 .
45Some symbols may be left visible via the
46.Fl k Ar keep-symbol
47and
48.Fl f Ar keep-list-file
49options.  The
50.Ar keep-list-file
51must contain a list of symbols to keep visible, one symbol per line.
52The names given by
53.Ar keep-symbol
54or in
55.Ar keep-list-file
56should be C names.  For example,
57to keep the C function
58.Dq foo
59visible, the option
60.Dq -k foo
61should be used.
62.Pp
63.Nm Crunchide
64is designed as a companion program for
65.Xr crunchgen 1 ,
66which automates the process of creating crunched binaries from
67multiple component programs.
68.Sh SEE ALSO
69.Xr crunchgen 1 ,
70.Xr ld 1
71.Sh AUTHORS
72.Nm Crunch
73was written by
74.An James da Silva Aq jds@cs.umd.edu .
75.sp 0
76Copyright (c) 1994 University of Maryland.  All Rights Reserved.
77.Pp
78Chris Demetriou <cgd@netbsd.org> reorganized
79.Nm
80so that it supported multiple object formats, and added
81ELF object support and ECOFF object recognition.
82.sp 0
83Copyright (c) 1997 Christopher G. Demetriou.  All Rights Reserved.
84