62 lines
2.1 KiB
Bash
62 lines
2.1 KiB
Bash
#!/bin/sh
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#
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# unifdefall: remove all the #if's from a source file
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#
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# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright (c) 2002 - 2013 Tony Finch <dot@dotat.at>
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# Copyright (c) 2009 - 2010 Jonathan Nieder <jrnieder@gmail.com>
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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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#
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# THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, 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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set -e
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unifdef="$(dirname "$0")/unifdef"
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if [ ! -e "$unifdef" ]
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then
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unifdef=unifdef
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fi
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case "$@" in
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"-d "*) echo DEBUGGING 1>&2
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debug=-d
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shift
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esac
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tmp=$(mktemp -d "${TMPDIR:-/tmp}/${0##*/}.XXXXXXXXXX") || exit 2
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trap 'rm -r "$tmp" || exit 2' EXIT
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export LC_ALL=C
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# list of all controlling macros; assume these are undefined
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"$unifdef" $debug -s "$@" | sort -u | sed 's/^/#undef /' >"$tmp/undefs"
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# list of all macro definitions
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cc -E -dM "$@" | sort >"$tmp/defs"
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case $debug in
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-d) cat "$tmp/undefs" "$tmp/defs" 1>&2
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esac
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# order of -f arguments means definitions override undefs
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"$unifdef" $debug -k -f "$tmp/undefs" -f "$tmp/defs" "$@"
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