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94 lines
2.5 KiB
Bash
94 lines
2.5 KiB
Bash
#!/bin/sh
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# ifnames - print the identifiers used in C preprocessor conditionals
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# Copyright (C) 1994 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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# Usage: ifnames [--macrodir=dir] [--help] [--version] [file...]
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# Reads from stdin if no files are given.
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# Writes to stdout.
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# Written by David MacKenzie <djm@gnu.ai.mit.edu>
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usage="Usage: ifnames [--macrodir=dir] [--help] [--version] [file...]"
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show_version=no
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test -z "$AC_MACRODIR" && AC_MACRODIR=@datadir@
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while test $# -gt 0; do
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case "$1" in
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--help | --hel | --he | --h)
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echo "$usage"; exit 0 ;;
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--macrodir=* | --m*=* )
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AC_MACRODIR="`echo \"$1\" | sed -e 's/^[^=]*=//'`"
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shift ;;
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-m | --macrodir | --m*)
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shift
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test $# -eq 0 && { echo "$usage" 1>&2; exit 1; }
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AC_MACRODIR="$1"
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shift ;;
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--version | --versio | --versi | --vers)
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show_version=yes; shift ;;
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--) # Stop option processing.
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shift; break ;;
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-*) echo "$usage" 1>&2; exit 1 ;;
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*) break ;;
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esac
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done
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if test $show_version = yes; then
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version=`sed -n 's/define.AC_ACVERSION.[ ]*\([0-9.]*\).*/\1/p' \
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$AC_MACRODIR/acgeneral.m4`
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echo "Autoconf version $version"
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exit 0
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fi
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if test $# -eq 0; then
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cat > stdin
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set stdin
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trap 'rm -f stdin' 0
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trap 'rm -f stdin; exit 1' 1 3 15
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fi
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for arg
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do
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sed -n '
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# Remove comments. Not perfect, but close enough.
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s,/\*[^/]*\*/,,g
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# Comments that end on a later line.
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s,/\*[^/]*,,g
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/^[ ]*#[ ]*ifn*def[ ][ ]*\([A-Za-z0-9_]*\).*/s//\1/p
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/^[ ]*#[ ]*e*l*if[ ]/{
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s///
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s/@//g
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# Enclose identifiers in @ and a space.
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s/\([A-Za-z_][A-Za-z_0-9]*\)/@\1 /g
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# Handle "#if 0" -- there are no @s to trigger removal.
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s/$/@ /
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# Remove non-identifiers.
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s/@defined //g
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s/[^@]*@\([^ ]* \)[^@]*/\1/g
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# Remove any spaces at the end.
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s/ *$//
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# Translate any other spaces to newlines.
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s/ /\
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/g
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p
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}
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' $arg | sort -u | sed 's,$, '$arg','
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done | awk '
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{ files[$1] = files[$1] " " $2 }
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END { for (sym in files) print sym files[sym] }' | sort
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