1#! /bin/sh
2# Common stub for a few missing GNU programs while installing.
3
4scriptversion=2012-01-06.13; # UTC
5
6# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006,
7# 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
8# Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
9
10# This program is free software; you can redistribute it and/or modify
11# it under the terms of the GNU General Public License as published by
12# the Free Software Foundation; either version 2, or (at your option)
13# any later version.
14
15# This program is distributed in the hope that it will be useful,
16# but WITHOUT ANY WARRANTY; without even the implied warranty of
17# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18# GNU General Public License for more details.
19
20# You should have received a copy of the GNU General Public License
21# along with this program.  If not, see <http://www.gnu.org/licenses/>.
22
23# As a special exception to the GNU General Public License, if you
24# distribute this file as part of a program that contains a
25# configuration script generated by Autoconf, you may include it under
26# the same distribution terms that you use for the rest of that program.
27
28if test $# -eq 0; then
29  echo 1>&2 "Try \`$0 --help' for more information"
30  exit 1
31fi
32
33run=:
34sed_output='s/.* --output[ =]\([^ ]*\).*/\1/p'
35sed_minuso='s/.* -o \([^ ]*\).*/\1/p'
36
37# In the cases where this matters, `missing' is being run in the
38# srcdir already.
39if test -f configure.ac; then
40  configure_ac=configure.ac
41else
42  configure_ac=configure.in
43fi
44
45msg="missing on your system"
46
47case $1 in
48--run)
49  # Try to run requested program, and just exit if it succeeds.
50  run=
51  shift
52  "$@" && exit 0
53  # Exit code 63 means version mismatch.  This often happens
54  # when the user try to use an ancient version of a tool on
55  # a file that requires a minimum version.  In this case we
56  # we should proceed has if the program had been absent, or
57  # if --run hadn't been passed.
58  if test $? = 63; then
59    run=:
60    msg="probably too old"
61  fi
62  ;;
63
64  -h|--h|--he|--hel|--help)
65    echo "\
66$0 [OPTION]... PROGRAM [ARGUMENT]...
67
68Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
69error status if there is no known handling for PROGRAM.
70
71Options:
72  -h, --help      display this help and exit
73  -v, --version   output version information and exit
74  --run           try to run the given command, and emulate it if it fails
75
76Supported PROGRAM values:
77  aclocal      touch file \`aclocal.m4'
78  autoconf     touch file \`configure'
79  autoheader   touch file \`config.h.in'
80  autom4te     touch the output file, or create a stub one
81  automake     touch all \`Makefile.in' files
82  bison        create \`y.tab.[ch]', if possible, from existing .[ch]
83  flex         create \`lex.yy.c', if possible, from existing .c
84  help2man     touch the output file
85  lex          create \`lex.yy.c', if possible, from existing .c
86  makeinfo     touch the output file
87  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]
88
89Version suffixes to PROGRAM as well as the prefixes \`gnu-', \`gnu', and
90\`g' are ignored when checking the name.
91
92Send bug reports to <bug-automake@gnu.org>."
93    exit $?
94    ;;
95
96  -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
97    echo "missing $scriptversion (GNU Automake)"
98    exit $?
99    ;;
100
101  -*)
102    echo 1>&2 "$0: Unknown \`$1' option"
103    echo 1>&2 "Try \`$0 --help' for more information"
104    exit 1
105    ;;
106
107esac
108
109# normalize program name to check for.
110program=`echo "$1" | sed '
111  s/^gnu-//; t
112  s/^gnu//; t
113  s/^g//; t'`
114
115# Now exit if we have it, but it failed.  Also exit now if we
116# don't have it and --version was passed (most likely to detect
117# the program).  This is about non-GNU programs, so use $1 not
118# $program.
119case $1 in
120  lex*|yacc*)
121    # Not GNU programs, they don't have --version.
122    ;;
123
124  *)
125    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
126       # We have it, but it failed.
127       exit 1
128    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
129       # Could not run --version or --help.  This is probably someone
130       # running `$TOOL --version' or `$TOOL --help' to check whether
131       # $TOOL exists and not knowing $TOOL uses missing.
132       exit 1
133    fi
134    ;;
135esac
136
137# If it does not exist, or fails to run (possibly an outdated version),
138# try to emulate it.
139case $program in
140  aclocal*)
141    echo 1>&2 "\
142WARNING: \`$1' is $msg.  You should only need it if
143         you modified \`acinclude.m4' or \`${configure_ac}'.  You might want
144         to install the \`Automake' and \`Perl' packages.  Grab them from
145         any GNU archive site."
146    touch aclocal.m4
147    ;;
148
149  autoconf*)
150    echo 1>&2 "\
151WARNING: \`$1' is $msg.  You should only need it if
152         you modified \`${configure_ac}'.  You might want to install the
153         \`Autoconf' and \`GNU m4' packages.  Grab them from any GNU
154         archive site."
155    touch configure
156    ;;
157
158  autoheader*)
159    echo 1>&2 "\
160WARNING: \`$1' is $msg.  You should only need it if
161         you modified \`acconfig.h' or \`${configure_ac}'.  You might want
162         to install the \`Autoconf' and \`GNU m4' packages.  Grab them
163         from any GNU archive site."
164    files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}`
165    test -z "$files" && files="config.h"
166    touch_files=
167    for f in $files; do
168      case $f in
169      *:*) touch_files="$touch_files "`echo "$f" |
170				       sed -e 's/^[^:]*://' -e 's/:.*//'`;;
171      *) touch_files="$touch_files $f.in";;
172      esac
173    done
174    touch $touch_files
175    ;;
176
177  automake*)
178    echo 1>&2 "\
179WARNING: \`$1' is $msg.  You should only need it if
180         you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
181         You might want to install the \`Automake' and \`Perl' packages.
182         Grab them from any GNU archive site."
183    find . -type f -name Makefile.am -print |
184	   sed 's/\.am$/.in/' |
185	   while read f; do touch "$f"; done
186    ;;
187
188  autom4te*)
189    echo 1>&2 "\
190WARNING: \`$1' is needed, but is $msg.
191         You might have modified some files without having the
192         proper tools for further handling them.
193         You can get \`$1' as part of \`Autoconf' from any GNU
194         archive site."
195
196    file=`echo "$*" | sed -n "$sed_output"`
197    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
198    if test -f "$file"; then
199	touch $file
200    else
201	test -z "$file" || exec >$file
202	echo "#! /bin/sh"
203	echo "# Created by GNU Automake missing as a replacement of"
204	echo "#  $ $@"
205	echo "exit 0"
206	chmod +x $file
207	exit 1
208    fi
209    ;;
210
211  bison*|yacc*)
212    echo 1>&2 "\
213WARNING: \`$1' $msg.  You should only need it if
214         you modified a \`.y' file.  You may need the \`Bison' package
215         in order for those modifications to take effect.  You can get
216         \`Bison' from any GNU archive site."
217    rm -f y.tab.c y.tab.h
218    if test $# -ne 1; then
219        eval LASTARG=\${$#}
220	case $LASTARG in
221	*.y)
222	    SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
223	    if test -f "$SRCFILE"; then
224	         cp "$SRCFILE" y.tab.c
225	    fi
226	    SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
227	    if test -f "$SRCFILE"; then
228	         cp "$SRCFILE" y.tab.h
229	    fi
230	  ;;
231	esac
232    fi
233    if test ! -f y.tab.h; then
234	echo >y.tab.h
235    fi
236    if test ! -f y.tab.c; then
237	echo 'main() { return 0; }' >y.tab.c
238    fi
239    ;;
240
241  lex*|flex*)
242    echo 1>&2 "\
243WARNING: \`$1' is $msg.  You should only need it if
244         you modified a \`.l' file.  You may need the \`Flex' package
245         in order for those modifications to take effect.  You can get
246         \`Flex' from any GNU archive site."
247    rm -f lex.yy.c
248    if test $# -ne 1; then
249        eval LASTARG=\${$#}
250	case $LASTARG in
251	*.l)
252	    SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
253	    if test -f "$SRCFILE"; then
254	         cp "$SRCFILE" lex.yy.c
255	    fi
256	  ;;
257	esac
258    fi
259    if test ! -f lex.yy.c; then
260	echo 'main() { return 0; }' >lex.yy.c
261    fi
262    ;;
263
264  help2man*)
265    echo 1>&2 "\
266WARNING: \`$1' is $msg.  You should only need it if
267	 you modified a dependency of a manual page.  You may need the
268	 \`Help2man' package in order for those modifications to take
269	 effect.  You can get \`Help2man' from any GNU archive site."
270
271    file=`echo "$*" | sed -n "$sed_output"`
272    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
273    if test -f "$file"; then
274	touch $file
275    else
276	test -z "$file" || exec >$file
277	echo ".ab help2man is required to generate this page"
278	exit $?
279    fi
280    ;;
281
282  makeinfo*)
283    echo 1>&2 "\
284WARNING: \`$1' is $msg.  You should only need it if
285         you modified a \`.texi' or \`.texinfo' file, or any other file
286         indirectly affecting the aspect of the manual.  The spurious
287         call might also be the consequence of using a buggy \`make' (AIX,
288         DU, IRIX).  You might want to install the \`Texinfo' package or
289         the \`GNU make' package.  Grab either from any GNU archive site."
290    # The file to touch is that specified with -o ...
291    file=`echo "$*" | sed -n "$sed_output"`
292    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
293    if test -z "$file"; then
294      # ... or it is the one specified with @setfilename ...
295      infile=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
296      file=`sed -n '
297	/^@setfilename/{
298	  s/.* \([^ ]*\) *$/\1/
299	  p
300	  q
301	}' $infile`
302      # ... or it is derived from the source name (dir/f.texi becomes f.info)
303      test -z "$file" && file=`echo "$infile" | sed 's,.*/,,;s,.[^.]*$,,'`.info
304    fi
305    # If the file does not exist, the user really needs makeinfo;
306    # let's fail without touching anything.
307    test -f $file || exit 1
308    touch $file
309    ;;
310
311  *)
312    echo 1>&2 "\
313WARNING: \`$1' is needed, and is $msg.
314         You might have modified some files without having the
315         proper tools for further handling them.  Check the \`README' file,
316         it often tells you about the needed prerequisites for installing
317         this package.  You may also peek at any GNU archive site, in case
318         some other package would contain this missing \`$1' program."
319    exit 1
320    ;;
321esac
322
323exit 0
324
325# Local variables:
326# eval: (add-hook 'write-file-hooks 'time-stamp)
327# time-stamp-start: "scriptversion="
328# time-stamp-format: "%:y-%02m-%02d.%02H"
329# time-stamp-time-zone: "UTC"
330# time-stamp-end: "; # UTC"
331# End:
332