1#! /bin/sh
2# Common stub for a few missing GNU programs while installing.
3
4scriptversion=2009-04-28.21; # UTC
5
6# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006,
7# 2008, 2009 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  tar          try tar, gnutar, gtar, then tar without non-portable flags
88  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]
89
90Version suffixes to PROGRAM as well as the prefixes \`gnu-', \`gnu', and
91\`g' are ignored when checking the name.
92
93Send bug reports to <bug-automake@gnu.org>."
94    exit $?
95    ;;
96
97  -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
98    echo "missing $scriptversion (GNU Automake)"
99    exit $?
100    ;;
101
102  -*)
103    echo 1>&2 "$0: Unknown \`$1' option"
104    echo 1>&2 "Try \`$0 --help' for more information"
105    exit 1
106    ;;
107
108esac
109
110# normalize program name to check for.
111program=`echo "$1" | sed '
112  s/^gnu-//; t
113  s/^gnu//; t
114  s/^g//; t'`
115
116# Now exit if we have it, but it failed.  Also exit now if we
117# don't have it and --version was passed (most likely to detect
118# the program).  This is about non-GNU programs, so use $1 not
119# $program.
120case $1 in
121  lex*|yacc*)
122    # Not GNU programs, they don't have --version.
123    ;;
124
125  tar*)
126    if test -n "$run"; then
127       echo 1>&2 "ERROR: \`tar' requires --run"
128       exit 1
129    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
130       exit 1
131    fi
132    ;;
133
134  *)
135    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
136       # We have it, but it failed.
137       exit 1
138    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
139       # Could not run --version or --help.  This is probably someone
140       # running `$TOOL --version' or `$TOOL --help' to check whether
141       # $TOOL exists and not knowing $TOOL uses missing.
142       exit 1
143    fi
144    ;;
145esac
146
147# If it does not exist, or fails to run (possibly an outdated version),
148# try to emulate it.
149case $program in
150  aclocal*)
151    echo 1>&2 "\
152WARNING: \`$1' is $msg.  You should only need it if
153         you modified \`acinclude.m4' or \`${configure_ac}'.  You might want
154         to install the \`Automake' and \`Perl' packages.  Grab them from
155         any GNU archive site."
156    touch aclocal.m4
157    ;;
158
159  autoconf*)
160    echo 1>&2 "\
161WARNING: \`$1' is $msg.  You should only need it if
162         you modified \`${configure_ac}'.  You might want to install the
163         \`Autoconf' and \`GNU m4' packages.  Grab them from any GNU
164         archive site."
165    touch configure
166    ;;
167
168  autoheader*)
169    echo 1>&2 "\
170WARNING: \`$1' is $msg.  You should only need it if
171         you modified \`acconfig.h' or \`${configure_ac}'.  You might want
172         to install the \`Autoconf' and \`GNU m4' packages.  Grab them
173         from any GNU archive site."
174    files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}`
175    test -z "$files" && files="config.h"
176    touch_files=
177    for f in $files; do
178      case $f in
179      *:*) touch_files="$touch_files "`echo "$f" |
180				       sed -e 's/^[^:]*://' -e 's/:.*//'`;;
181      *) touch_files="$touch_files $f.in";;
182      esac
183    done
184    touch $touch_files
185    ;;
186
187  automake*)
188    echo 1>&2 "\
189WARNING: \`$1' is $msg.  You should only need it if
190         you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
191         You might want to install the \`Automake' and \`Perl' packages.
192         Grab them from any GNU archive site."
193    find . -type f -name Makefile.am -print |
194	   sed 's/\.am$/.in/' |
195	   while read f; do touch "$f"; done
196    ;;
197
198  autom4te*)
199    echo 1>&2 "\
200WARNING: \`$1' is needed, but is $msg.
201         You might have modified some files without having the
202         proper tools for further handling them.
203         You can get \`$1' as part of \`Autoconf' from any GNU
204         archive site."
205
206    file=`echo "$*" | sed -n "$sed_output"`
207    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
208    if test -f "$file"; then
209	touch $file
210    else
211	test -z "$file" || exec >$file
212	echo "#! /bin/sh"
213	echo "# Created by GNU Automake missing as a replacement of"
214	echo "#  $ $@"
215	echo "exit 0"
216	chmod +x $file
217	exit 1
218    fi
219    ;;
220
221  bison*|yacc*)
222    echo 1>&2 "\
223WARNING: \`$1' $msg.  You should only need it if
224         you modified a \`.y' file.  You may need the \`Bison' package
225         in order for those modifications to take effect.  You can get
226         \`Bison' from any GNU archive site."
227    rm -f y.tab.c y.tab.h
228    if test $# -ne 1; then
229        eval LASTARG="\${$#}"
230	case $LASTARG in
231	*.y)
232	    SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
233	    if test -f "$SRCFILE"; then
234	         cp "$SRCFILE" y.tab.c
235	    fi
236	    SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
237	    if test -f "$SRCFILE"; then
238	         cp "$SRCFILE" y.tab.h
239	    fi
240	  ;;
241	esac
242    fi
243    if test ! -f y.tab.h; then
244	echo >y.tab.h
245    fi
246    if test ! -f y.tab.c; then
247	echo 'main() { return 0; }' >y.tab.c
248    fi
249    ;;
250
251  lex*|flex*)
252    echo 1>&2 "\
253WARNING: \`$1' is $msg.  You should only need it if
254         you modified a \`.l' file.  You may need the \`Flex' package
255         in order for those modifications to take effect.  You can get
256         \`Flex' from any GNU archive site."
257    rm -f lex.yy.c
258    if test $# -ne 1; then
259        eval LASTARG="\${$#}"
260	case $LASTARG in
261	*.l)
262	    SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
263	    if test -f "$SRCFILE"; then
264	         cp "$SRCFILE" lex.yy.c
265	    fi
266	  ;;
267	esac
268    fi
269    if test ! -f lex.yy.c; then
270	echo 'main() { return 0; }' >lex.yy.c
271    fi
272    ;;
273
274  help2man*)
275    echo 1>&2 "\
276WARNING: \`$1' is $msg.  You should only need it if
277	 you modified a dependency of a manual page.  You may need the
278	 \`Help2man' package in order for those modifications to take
279	 effect.  You can get \`Help2man' from any GNU archive site."
280
281    file=`echo "$*" | sed -n "$sed_output"`
282    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
283    if test -f "$file"; then
284	touch $file
285    else
286	test -z "$file" || exec >$file
287	echo ".ab help2man is required to generate this page"
288	exit $?
289    fi
290    ;;
291
292  makeinfo*)
293    echo 1>&2 "\
294WARNING: \`$1' is $msg.  You should only need it if
295         you modified a \`.texi' or \`.texinfo' file, or any other file
296         indirectly affecting the aspect of the manual.  The spurious
297         call might also be the consequence of using a buggy \`make' (AIX,
298         DU, IRIX).  You might want to install the \`Texinfo' package or
299         the \`GNU make' package.  Grab either from any GNU archive site."
300    # The file to touch is that specified with -o ...
301    file=`echo "$*" | sed -n "$sed_output"`
302    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
303    if test -z "$file"; then
304      # ... or it is the one specified with @setfilename ...
305      infile=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
306      file=`sed -n '
307	/^@setfilename/{
308	  s/.* \([^ ]*\) *$/\1/
309	  p
310	  q
311	}' $infile`
312      # ... or it is derived from the source name (dir/f.texi becomes f.info)
313      test -z "$file" && file=`echo "$infile" | sed 's,.*/,,;s,.[^.]*$,,'`.info
314    fi
315    # If the file does not exist, the user really needs makeinfo;
316    # let's fail without touching anything.
317    test -f $file || exit 1
318    touch $file
319    ;;
320
321  tar*)
322    shift
323
324    # We have already tried tar in the generic part.
325    # Look for gnutar/gtar before invocation to avoid ugly error
326    # messages.
327    if (gnutar --version > /dev/null 2>&1); then
328       gnutar "$@" && exit 0
329    fi
330    if (gtar --version > /dev/null 2>&1); then
331       gtar "$@" && exit 0
332    fi
333    firstarg="$1"
334    if shift; then
335	case $firstarg in
336	*o*)
337	    firstarg=`echo "$firstarg" | sed s/o//`
338	    tar "$firstarg" "$@" && exit 0
339	    ;;
340	esac
341	case $firstarg in
342	*h*)
343	    firstarg=`echo "$firstarg" | sed s/h//`
344	    tar "$firstarg" "$@" && exit 0
345	    ;;
346	esac
347    fi
348
349    echo 1>&2 "\
350WARNING: I can't seem to be able to run \`tar' with the given arguments.
351         You may want to install GNU tar or Free paxutils, or check the
352         command line arguments."
353    exit 1
354    ;;
355
356  *)
357    echo 1>&2 "\
358WARNING: \`$1' is needed, and is $msg.
359         You might have modified some files without having the
360         proper tools for further handling them.  Check the \`README' file,
361         it often tells you about the needed prerequisites for installing
362         this package.  You may also peek at any GNU archive site, in case
363         some other package would contain this missing \`$1' program."
364    exit 1
365    ;;
366esac
367
368exit 0
369
370# Local variables:
371# eval: (add-hook 'write-file-hooks 'time-stamp)
372# time-stamp-start: "scriptversion="
373# time-stamp-format: "%:y-%02m-%02d.%02H"
374# time-stamp-time-zone: "UTC"
375# time-stamp-end: "; # UTC"
376# End:
377