#! /bin/sh
-# Common stub for a few missing GNU programs while installing.
+# Common wrapper for a few potentially missing GNU programs.
-scriptversion=2012-05-23.18; # UTC
+scriptversion=2012-06-14.10; # UTC
# Copyright (C) 1996-2012 Free Software Foundation, Inc.
-# Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
+# Originally written by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
exit 1
fi
-run=:
-sed_output='s/.* --output[ =]\([^ ]*\).*/\1/p'
-sed_minuso='s/.* -o \([^ ]*\).*/\1/p'
-
# In the cases where this matters, 'missing' is being run in the
# srcdir already.
if test -f configure.ac; then
configure_ac=configure.in
fi
-msg="missing on your system"
-
case $1 in
---run)
- # Try to run requested program, and just exit if it succeeds.
- run=
- shift
- "$@" && exit 0
- # Exit code 63 means version mismatch. This often happens
- # when the user try to use an ancient version of a tool on
- # a file that requires a minimum version. In this case we
- # we should proceed has if the program had been absent, or
- # if --run hadn't been passed.
- if test $? = 63; then
- run=:
- msg="probably too old"
- fi
- ;;
+
+ --is-lightweight)
+ # Used by our autoconf macros to check whether the available missing
+ # script is modern enough.
+ exit 0
+ ;;
-h|--h|--he|--hel|--help)
echo "\
$0 [OPTION]... PROGRAM [ARGUMENT]...
-Handle 'PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
-error status if there is no known handling for PROGRAM.
+Run 'PROGRAM [ARGUMENT]...', returning a proper advice when this fails due
+to PROGRAM being missing or too old.
Options:
-h, --help display this help and exit
-v, --version output version information and exit
- --run try to run the given command, and emulate it if it fails
Supported PROGRAM values:
- aclocal touch file 'aclocal.m4'
- autoconf touch file 'configure'
- autoheader touch file 'config.h.in'
- autom4te touch the output file, or create a stub one
- automake touch all 'Makefile.in' files
- bison create 'y.tab.[ch]', if possible, from existing .[ch]
- flex create 'lex.yy.c', if possible, from existing .c
- help2man touch the output file
- lex create 'lex.yy.c', if possible, from existing .c
- makeinfo touch the output file
- yacc create 'y.tab.[ch]', if possible, from existing .[ch]
+ aclocal autoconf autoheader autom4te automake makeinfo
+ bison yacc flex lex help2man
Version suffixes to PROGRAM as well as the prefixes 'gnu-', 'gnu', and
'g' are ignored when checking the name.
;;
-*)
- echo 1>&2 "$0: Unknown '$1' option"
+ echo 1>&2 "$0: unknown '$1' option"
echo 1>&2 "Try '$0 --help' for more information"
exit 1
;;
esac
-# normalize program name to check for.
+# Run the given program, remember its exit status.
+"$@"; st=$?
+
+# If it succeeded, we are done.
+test $st -eq 0 && exit 0
+
+# Also exit now if we it failed (or wasn't found), and '--version' was
+# passed; such an option is passed most likely to detect whether the
+# program is present and works.
+case $2 in --version|--help) exit $st;; esac
+
+# Exit code 63 means version mismatch. This often happens when the user
+# tries to use an ancient version of a tool on a file that requires a
+# minimum version.
+if test $st -eq 63; then
+ msg="probably too old"
+elif test $st -eq 127; then
+ # Program was missing.
+ msg="missing on your system"
+else
+ # Program was found and executed, but failed. Give up.
+ exit $st
+fi
+
+# Normalize program name to check for.
program=`echo "$1" | sed '
s/^gnu-//; t
s/^gnu//; t
s/^g//; t'`
-# Now exit if we have it, but it failed. Also exit now if we
-# don't have it and --version was passed (most likely to detect
-# the program). This is about non-GNU programs, so use $1 not
-# $program.
-case $1 in
- lex*|yacc*)
- # Not GNU programs, they don't have --version.
- ;;
-
- *)
- if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
- # We have it, but it failed.
- exit 1
- elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
- # Could not run --version or --help. This is probably someone
- # running '$TOOL --version' or '$TOOL --help' to check whether
- # $TOOL exists and not knowing $TOOL uses missing.
- exit 1
- fi
- ;;
-esac
-
# If it does not exist, or fails to run (possibly an outdated version),
-# try to emulate it.
+# advise the user how to get it.
case $program in
+
aclocal*)
echo 1>&2 "\
WARNING: '$1' is $msg. You should only need it if
you modified 'acinclude.m4' or '${configure_ac}'. You might want
to install the Automake and Perl packages. Grab them from
any GNU archive site."
- touch aclocal.m4
;;
autoconf*)
you modified '${configure_ac}'. You might want to install the
Autoconf and GNU m4 packages. Grab them from any GNU
archive site."
- touch configure
;;
autoheader*)
you modified 'acconfig.h' or '${configure_ac}'. You might want
to install the Autoconf and GNU m4 packages. Grab them
from any GNU archive site."
- files=`sed -n -e 's/^[ ]*AC_CONFIG_HEADER(\([^)]*\)).*/\1/p' \
- -e 's/^[ ]*AC_CONFIG_HEADERS(\([^)]*\)).*/\1/p' \
- ${configure_ac}`
- test -z "$files" && files="config.h"
- touch_files=
- for f in $files; do
- case $f in
- *:*) touch_files="$touch_files "`echo "$f" |
- sed -e 's/^[^:]*://' -e 's/:.*//'`;;
- *) touch_files="$touch_files $f.in";;
- esac
- done
- touch $touch_files
;;
automake*)
you modified 'Makefile.am', 'acinclude.m4' or '${configure_ac}'.
You might want to install the Automake and Perl packages.
Grab them from any GNU archive site."
- find . -type f -name Makefile.am -print |
- sed 's/\.am$/.in/' |
- while read f; do touch "$f"; done
;;
autom4te*)
proper tools for further handling them.
You can get '$1' as part of Autoconf from any GNU
archive site."
-
- file=`echo "$*" | sed -n "$sed_output"`
- test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
- if test -f "$file"; then
- touch $file
- else
- test -z "$file" || exec >$file
- echo "#! /bin/sh"
- echo "# Created by GNU Automake missing as a replacement of"
- echo "# $ $@"
- echo "exit 0"
- chmod +x $file
- exit 1
- fi
;;
bison*|yacc*)
you modified a '.y' file. You may need the Bison package
in order for those modifications to take effect. You can get
Bison from any GNU archive site."
- rm -f y.tab.c y.tab.h
- if test $# -ne 1; then
- eval LASTARG=\${$#}
- case $LASTARG in
- *.y)
- SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
- if test -f "$SRCFILE"; then
- cp "$SRCFILE" y.tab.c
- fi
- SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
- if test -f "$SRCFILE"; then
- cp "$SRCFILE" y.tab.h
- fi
- ;;
- esac
- fi
- if test ! -f y.tab.h; then
- echo >y.tab.h
- fi
- if test ! -f y.tab.c; then
- echo 'main() { return 0; }' >y.tab.c
- fi
;;
lex*|flex*)
you modified a '.l' file. You may need the Flex package
in order for those modifications to take effect. You can get
Flex from any GNU archive site."
- rm -f lex.yy.c
- if test $# -ne 1; then
- eval LASTARG=\${$#}
- case $LASTARG in
- *.l)
- SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
- if test -f "$SRCFILE"; then
- cp "$SRCFILE" lex.yy.c
- fi
- ;;
- esac
- fi
- if test ! -f lex.yy.c; then
- echo 'main() { return 0; }' >lex.yy.c
- fi
;;
help2man*)
you modified a dependency of a manual page. You may need the
Help2man package in order for those modifications to take
effect. You can get Help2man from any GNU archive site."
-
- file=`echo "$*" | sed -n "$sed_output"`
- test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
- if test -f "$file"; then
- touch $file
- else
- test -z "$file" || exec >$file
- echo ".ab help2man is required to generate this page"
- exit $?
- fi
;;
makeinfo*)
call might also be the consequence of using a buggy 'make' (AIX,
DU, IRIX). You might want to install the Texinfo package or
the GNU make package. Grab either from any GNU archive site."
- # The file to touch is that specified with -o ...
- file=`echo "$*" | sed -n "$sed_output"`
- test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
- if test -z "$file"; then
- # ... or it is the one specified with @setfilename ...
- infile=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
- file=`sed -n '
- /^@setfilename/{
- s/.* \([^ ]*\) *$/\1/
- p
- q
- }' $infile`
- # ... or it is derived from the source name (dir/f.texi becomes f.info)
- test -z "$file" && file=`echo "$infile" | sed 's,.*/,,;s,.[^.]*$,,'`.info
- fi
- # If the file does not exist, the user really needs makeinfo;
- # let's fail without touching anything.
- test -f $file || exit 1
- touch $file
;;
*)
it often tells you about the needed prerequisites for installing
this package. You may also peek at any GNU archive site, in case
some other package would contain this missing '$1' program."
- exit 1
;;
+
esac
-exit 0
+# Propagate the correct exit status (expected to be 127 for a program
+# not found, 63 for a program that failed due to version mismatch).
+exit $st
# Local variables:
# eval: (add-hook 'write-file-hooks 'time-stamp)