1.\" 2.\" Copyright (c) 1994 University of Maryland 3.\" All Rights Reserved. 4.\" 5.\" Permission to use, copy, modify, distribute, and sell this software and its 6.\" documentation for any purpose is hereby granted without fee, provided that 7.\" the above copyright notice appear in all copies and that both that 8.\" copyright notice and this permission notice appear in supporting 9.\" documentation, and that the name of U.M. not be used in advertising or 10.\" publicity pertaining to distribution of the software without specific, 11.\" written prior permission. U.M. makes no representations about the 12.\" suitability of this software for any purpose. It is provided "as is" 13.\" without express or implied warranty. 14.\" 15.\" U.M. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL 16.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL U.M. 17.\" BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 18.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 19.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR 20.\" IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 21.\" 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