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