gcc/libstdc++-v3/mkcshadow

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#!/bin/bash
# mkcshadow: reads header names (like "features.h" or "sys/types.h")
# from stdin, and creates shadow headers under cshadow/, except where
# a header of the same name is already in shadow/.
while read header; do
if [ ! -f shadow/$header ]; then
# strip off directory names while making
# any necessary directories
dir=cshadow
case "$header" in */*)
right="$header"
while [ "$right" != "${right##*/}" ] ; do
dir="$dir/${right%%/*}"
if [ ! -d "$dir" ]; then mkdir "$dir"; fi
right="${right#*/}"
done
;;
esac
UPNAME=`echo $header | tr 'a-z./-' 'A-Z___'`
cat >"cshadow/$header" <<EOF
// -*- C++ -*- header wrapper.
// Copyright (C) 1997-1999, 2000 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
// Note: this file was automatically generated by the "mkcshadow"
// script. RTFM!
#ifndef _INCLUDED_CPP_${UPNAME}_
# ifdef _IN_C_SWAMP_ /* sub-included by a C header */
# include_next <${header}>
# else
namespace _C_Swamp { namespace _C_Shadow { } }
using namespace ::_C_Swamp::_C_Shadow;
namespace _C_Swamp_ {
extern "C" {
# define _IN_C_SWAMP_
# include_next <${header}>
} // close extern "C"
} // close namespace _C_Swamp::
# endif /* _IN_C_SWAMP_ */
#endif /* _INCLUDED_CPP_${UPNAME}_ */
EOF
fi
done