1 | #! @SHELL@ |
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2 | # ifnames - print the identifiers used in C preprocessor conditionals |
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3 | # Copyright (C) 1994, 1995 Free Software Foundation, Inc. |
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4 | |
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5 | # This program is free software; you can redistribute it and/or modify |
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6 | # it under the terms of the GNU General Public License as published by |
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7 | # the Free Software Foundation; either version 2, or (at your option) |
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8 | # any later version. |
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9 | |
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10 | # This program is distributed in the hope that it will be useful, |
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11 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 | # GNU General Public License for more details. |
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14 | |
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15 | # You should have received a copy of the GNU General Public License |
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16 | # along with this program; if not, write to the Free Software |
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17 | # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA |
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18 | # 02111-1307, USA. |
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19 | |
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20 | # Reads from stdin if no files are given. |
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21 | # Writes to stdout. |
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22 | |
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23 | # Written by David MacKenzie <djm@gnu.ai.mit.edu> |
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24 | # and Paul Eggert <eggert@twinsun.com>. |
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25 | |
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26 | usage="\ |
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27 | Usage: ifnames [-h] [--help] [-m dir] [--macrodir=dir] [--version] [file...]" |
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28 | show_version=no |
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29 | |
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30 | : ${AC_MACRODIR=@datadir@} |
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31 | |
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32 | while test $# -gt 0; do |
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33 | case "$1" in |
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34 | -h | --help | --h* ) |
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35 | echo "$usage"; exit 0 ;; |
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36 | --macrodir=* | --m*=* ) |
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37 | AC_MACRODIR="`echo \"$1\" | sed -e 's/^[^=]*=//'`" |
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38 | shift ;; |
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39 | -m | --macrodir | --m* ) |
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40 | shift |
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41 | test $# -eq 0 && { echo "$usage" 1>&2; exit 1; } |
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42 | AC_MACRODIR="$1" |
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43 | shift ;; |
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44 | --version | --versio | --versi | --vers) |
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45 | show_version=yes; shift ;; |
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46 | --) # Stop option processing. |
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47 | shift; break ;; |
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48 | -*) echo "$usage" 1>&2; exit 1 ;; |
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49 | *) break ;; |
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50 | esac |
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51 | done |
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52 | |
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53 | if test $show_version = yes; then |
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54 | version=`sed -n 's/define.AC_ACVERSION.[ ]*\([0-9.]*\).*/\1/p' \ |
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55 | $AC_MACRODIR/acgeneral.m4` |
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56 | echo "Autoconf version $version" |
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57 | exit 0 |
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58 | fi |
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59 | |
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60 | @AWK@ ' |
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61 | # Record that sym was found in FILENAME. |
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62 | function file_sym(sym, i, fs) { |
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63 | if (sym ~ /^[A-Za-z_]/) { |
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64 | if (!found[sym,FILENAME]) { |
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65 | found[sym,FILENAME] = 1 |
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66 | |
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67 | # Insert FILENAME into files[sym], keeping the list sorted. |
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68 | i = 1 |
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69 | fs = files[sym] |
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70 | while (match(substr(fs, i), /^ [^ ]*/) \ |
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71 | && substr(fs, i + 1, RLENGTH - 1) < FILENAME) { |
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72 | i += RLENGTH |
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73 | } |
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74 | files[sym] = substr(fs, 1, i - 1) " " FILENAME substr(fs, i) |
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75 | } |
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76 | } |
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77 | } |
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78 | |
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79 | /^[\t ]*#/ { |
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80 | if (sub(/^[\t ]*#[\t ]*ifn?def[\t ]+/, "", $0)) { |
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81 | sub(/[^A-Za-z_0-9].*/, "", $0) |
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82 | file_sym($0) |
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83 | } |
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84 | if (sub(/^[\t ]*#[\t ]*(el)?if[\t ]+/, "", $0)) { |
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85 | # Remove comments. Not perfect, but close enough. |
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86 | gsub(/\/\*[^\/]*(\*\/)?/, "", $0) |
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87 | |
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88 | for (i = split($0, field, /[^A-Za-z_0-9]+/); 1 <= i; i--) { |
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89 | if (field[i] != "defined") { |
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90 | file_sym(field[i]) |
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91 | } |
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92 | } |
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93 | } |
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94 | } |
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95 | |
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96 | END { |
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97 | for (sym in files) { |
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98 | print sym files[sym] |
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99 | } |
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100 | } |
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101 | ' ${1+"$@"} | sort |
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