104 lines
3.2 KiB
Groff
104 lines
3.2 KiB
Groff
.\" $NetBSD: ld.so.conf.5,v 1.13 1999/12/20 01:43:05 christos Exp $
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.\"
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.\" Copyright (c) 1996 Matthew R. Green
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. The name of the author may not be used to endorse or promote products
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.\" derived from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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.\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.Dd August 24, 1997
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.Dt LD.SO.CONF 5
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.Os
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.Sh NAME
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.Nm ld.so.conf
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.Nd run-time link-editor configuration file
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.Sh DESCRIPTION
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The
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.Nm
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file specifies additional default directories (beyond the standard set,
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normally
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.Dq /usr/lib
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).
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.Pp
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On
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.Xr a.out 5
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systems, this file is scanned by
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.Xr ldconfig 8
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to create the hints files used by the run-time linker
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.Pa /usr/libexec/ld.so
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to locate shared libraries.
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.Pp
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On elf
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.\" .Xr elf 5
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systems, this file is scanned directly by the run-time linker
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.Pa /usr/libexec/ld.elf_so .
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.Pp
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Lines beginning with
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.Dq #
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are treated as comments and ignored. Any other non-blank lines beginning
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with '/' are stripped of leading whitespace and trailing comments
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(introduced with
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.Dq # )
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together with any preceding whitespace, then treated as directories to be
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scanned for shared libraries to add to the hints.
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.Pp
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On elf
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.\" .Xr elf 5
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lines that do not begin with a '/' are parsed as hardware dependent per
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library directives:
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.sp
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.nf
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<library_name> <sysctl_variable> <variable_value>[,...]:<library_name>[,...] ...
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.fi
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.sp
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If there is no match, the standard action is taken.
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.Sh EXAMPLES
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.sp
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.nf
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libm.so.0 machdep.fpu_present 1:libm387.so.0,libm.so.0
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.fi
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.sp
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The above line loads both libm387 and libm when the
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.Xr sysctl 3
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variable fpu_present has the value 1.
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.Sh FILES
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.Pa /etc/ld.so.conf
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.Sh SEE ALSO
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.\" .Xr ld.elf_so 1
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.\" .Xr ld.aout_so 1
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.Xr a.out 5
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.\" .Xr elf 5
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.Xr ldconfig 8
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.Sh BUGS
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Directory names containing the comment character
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.Pq Dq #
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and/or leading or trailing whitespace cannot be included. (Embedded blanks
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are allowed, however.)
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.Sh HISTORY
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The
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.Nm
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file appeared in
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.Nx 1.3 .
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The ELF support for it was added in
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.Nx 1.5 .
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