3 # unifdefall: remove all the #if's from a source file
5 # SPDX-License-Identifier: BSD-2-Clause-FreeBSD
7 # Copyright (c) 2002 - 2013 Tony Finch <dot@dotat.at>
8 # Copyright (c) 2009 - 2010 Jonathan Nieder <jrnieder@gmail.com>
10 # Redistribution and use in source and binary forms, with or without
11 # modification, are permitted provided that the following conditions
13 # 1. Redistributions of source code must retain the above copyright
14 # notice, this list of conditions and the following disclaimer.
15 # 2. Redistributions in binary form must reproduce the above copyright
16 # notice, this list of conditions and the following disclaimer in the
17 # documentation and/or other materials provided with the distribution.
19 # THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 # ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
23 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 unifdef="$(dirname "$0")/unifdef"
36 if [ ! -e "$unifdef" ]
42 "-d "*) echo DEBUGGING 1>&2
47 tmp=$(mktemp -d "${TMPDIR:-/tmp}/${0##*/}.XXXXXXXXXX") || exit 2
48 trap 'rm -r "$tmp" || exit 2' EXIT
52 # list of all controlling macros; assume these are undefined
53 "$unifdef" $debug -s "$@" | sort -u | sed 's/^/#undef /' >"$tmp/undefs"
54 # list of all macro definitions
55 cc -E -dM "$@" | sort >"$tmp/defs"
58 -d) cat "$tmp/undefs" "$tmp/defs" 1>&2
61 # order of -f arguments means definitions override undefs
62 "$unifdef" $debug -k -f "$tmp/undefs" -f "$tmp/defs" "$@"