1#!/bin/sh 2# 3# unifdefall: remove all the #if's from a source file 4# 5# Copyright (c) 2002 - 2013 Tony Finch <dot@dotat.at> 6# Copyright (c) 2009 - 2010 Jonathan Nieder <jrnieder@gmail.com> 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions 10# are met: 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. 16# 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 27# SUCH DAMAGE. 28 29set -e 30 31unifdef="$(dirname "$0")/unifdef" 32if [ ! -e "$unifdef" ] 33then 34 unifdef=unifdef 35fi 36 37case "$@" in 38"-d "*) echo DEBUGGING 1>&2 39 debug=-d 40 shift 41esac 42 43tmp=$(mktemp -d "${TMPDIR:-/tmp}/${0##*/}.XXXXXXXXXX") || exit 2 44trap 'rm -r "$tmp" || exit 2' EXIT 45 46export LC_ALL=C 47 48# list of all controlling macros; assume these are undefined 49"$unifdef" $debug -s "$@" | sort -u | sed 's/^/#undef /' >"$tmp/undefs" 50# list of all macro definitions 51cc -E -dM "$@" | sort >"$tmp/defs" 52 53case $debug in 54-d) cat "$tmp/undefs" "$tmp/defs" 1>&2 55esac 56 57# order of -f arguments means definitions override undefs 58"$unifdef" $debug -k -f "$tmp/undefs" -f "$tmp/defs" "$@" 59