add libelf from elftoolchain r3669

A 2 clause BSD licensed implementation of the SVR4 ELF API also
implemented by mr511.de libelf (devel/libelf in ports) and elfutils.

It is being added to base to allow Mesa to use it in future.

shlib major is higher than devel/libelf and pkg-config version is 0.8.2
to pass a glib2 configure test so this can replace the use of
devel/libelf in ports.

1 files changed, 57 insertions, 0 deletions

diff --git a/lib/libelf/elf_hash.3 b/lib/libelf/elf_hash.3
new file mode 100644
index 00000000000..b0d91aed86d
--- /dev/null
+++ b/lib/libelf/elf_hash.3
@@ -0,0 +1,57 @@
+.\" Copyright (c) 2006,2008 Joseph Koshy.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" This software is provided by Joseph Koshy ``as is'' and
+.\" any express or implied warranties, including, but not limited to, the
+.\" implied warranties of merchantability and fitness for a particular purpose
+.\" are disclaimed.  in no event shall Joseph Koshy be liable
+.\" for any direct, indirect, incidental, special, exemplary, or consequential
+.\" damages (including, but not limited to, procurement of substitute goods
+.\" or services; loss of use, data, or profits; or business interruption)
+.\" however caused and on any theory of liability, whether in contract, strict
+.\" liability, or tort (including negligence or otherwise) arising in any way
+.\" out of the use of this software, even if advised of the possibility of
+.\" such damage.
+.\"
+.\" $Id: elf_hash.3,v 1.1 2019/02/01 05:27:37 jsg Exp $
+.\"
+.Dd August 15, 2006
+.Dt ELF_HASH 3
+.Os
+.Sh NAME
+.Nm elf_hash
+.Nd compute a hash value for a string
+.Sh LIBRARY
+.Lb libelf
+.Sh SYNOPSIS
+.In libelf.h
+.Ft "unsigned long"
+.Fn elf_hash "const char *name"
+.Sh DESCRIPTION
+Function
+.Fn elf_hash
+computes a portable hash value for the null terminated string
+pointed to by argument
+.Ar name .
+.Pp
+The hash value returned is will be identical across
+machines of different architectures.
+This allows hash tables to be built on one machine and
+correctly used on another of a different architecture.
+The hash value returned is also guaranteed
+.Em not
+to be the bit pattern of all ones (~0UL).
+.Sh IMPLEMENTATION NOTES
+The library internally uses unsigned 32 bit arithmetic to compute
+the hash value.
+.Sh SEE ALSO
+.Xr elf 3 ,
+.Xr gelf 3