Index: missing
===================================================================
--- missing	(revision 51b734528489f81a5af985bfee9aa3b6625b9774)
+++ missing	(revision f7d59bf7ff7439f2bc863b06dbab44d10a803905)
@@ -1,5 +1,9 @@
 #! /bin/sh
 # Common stub for a few missing GNU programs while installing.
-# Copyright (C) 1996, 1997, 1999, 2000, 2002 Free Software Foundation, Inc.
+
+scriptversion=2012-01-06.13; # UTC
+
+# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006,
+# 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
 # Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
 
@@ -15,7 +19,5 @@
 
 # You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-# 02111-1307, USA.
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 # As a special exception to the GNU General Public License, if you
@@ -30,4 +32,6 @@
 
 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
@@ -39,5 +43,7 @@
 fi
 
-case "$1" in
+msg="missing on your system"
+
+case $1 in
 --run)
   # Try to run requested program, and just exit if it succeeds.
@@ -45,10 +51,14 @@
   shift
   "$@" && 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
   ;;
-esac
-
-# If it does not exist, or fails to run (possibly an outdated version),
-# try to emulate it.
-case "$1" in
 
   -h|--h|--he|--hel|--help)
@@ -68,4 +78,5 @@
   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]
@@ -74,10 +85,16 @@
   lex          create \`lex.yy.c', if possible, from existing .c
   makeinfo     touch the output file
-  tar          try tar, gnutar, gtar, then tar without non-portable flags
-  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]"
+  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]
+
+Version suffixes to PROGRAM as well as the prefixes \`gnu-', \`gnu', and
+\`g' are ignored when checking the name.
+
+Send bug reports to <bug-automake@gnu.org>."
+    exit $?
     ;;
 
   -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
-    echo "missing 0.4 - GNU automake"
+    echo "missing $scriptversion (GNU Automake)"
+    exit $?
     ;;
 
@@ -88,12 +105,40 @@
     ;;
 
-  aclocal*)
+esac
+
+# 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
-    fi
-
-    echo 1>&2 "\
-WARNING: \`$1' is missing on your system.  You should only need it if
+    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.
+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
@@ -102,12 +147,7 @@
     ;;
 
-  autoconf)
-    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
-       # We have it, but it failed.
-       exit 1
-    fi
-
-    echo 1>&2 "\
-WARNING: \`$1' is missing on your system.  You should only need it if
+  autoconf*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
          you modified \`${configure_ac}'.  You might want to install the
          \`Autoconf' and \`GNU m4' packages.  Grab them from any GNU
@@ -116,12 +156,7 @@
     ;;
 
-  autoheader)
-    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
-       # We have it, but it failed.
-       exit 1
-    fi
-
-    echo 1>&2 "\
-WARNING: \`$1' is missing on your system.  You should only need it if
+  autoheader*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
          you modified \`acconfig.h' or \`${configure_ac}'.  You might want
          to install the \`Autoconf' and \`GNU m4' packages.  Grab them
@@ -131,5 +166,5 @@
     touch_files=
     for f in $files; do
-      case "$f" in
+      case $f in
       *:*) touch_files="$touch_files "`echo "$f" |
 				       sed -e 's/^[^:]*://' -e 's/:.*//'`;;
@@ -141,11 +176,6 @@
 
   automake*)
-    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
-       # We have it, but it failed.
-       exit 1
-    fi
-
-    echo 1>&2 "\
-WARNING: \`$1' is missing on your system.  You should only need it if
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
          you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
          You might want to install the \`Automake' and \`Perl' packages.
@@ -156,19 +186,14 @@
     ;;
 
-  autom4te)
-    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
-       # We have it, but it failed.
-       exit 1
-    fi
-
-    echo 1>&2 "\
-WARNING: \`$1' is needed, and you do not seem to have it handy on your
-         system.  You might have modified some files without having the
+  autom4te*)
+    echo 1>&2 "\
+WARNING: \`$1' is needed, but is $msg.
+         You might have modified some files without having the
          proper tools for further handling them.
-         You can get \`$1Help2man' as part of \`Autoconf' from any GNU
+         You can get \`$1' as part of \`Autoconf' from any GNU
          archive site."
 
-    file=`echo "$*" | sed -n 's/.*--output[ =]*\([^ ]*\).*/\1/p'`
-    test -z "$file" && file=`echo "$*" | sed -n 's/.*-o[ ]*\([^ ]*\).*/\1/p'`
+    file=`echo "$*" | sed -n "$sed_output"`
+    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
     if test -f "$file"; then
 	touch $file
@@ -184,21 +209,21 @@
     ;;
 
-  bison|yacc)
-    echo 1>&2 "\
-WARNING: \`$1' is missing on your system.  You should only need it if
+  bison*|yacc*)
+    echo 1>&2 "\
+WARNING: \`$1' $msg.  You should only need it if
          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 [ $# -ne 1 ]; then
-        eval LASTARG="\${$#}"
-	case "$LASTARG" in
+    if test $# -ne 1; then
+        eval LASTARG=\${$#}
+	case $LASTARG in
 	*.y)
 	    SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
-	    if [ -f "$SRCFILE" ]; then
+	    if test -f "$SRCFILE"; then
 	         cp "$SRCFILE" y.tab.c
 	    fi
 	    SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
-	    if [ -f "$SRCFILE" ]; then
+	    if test -f "$SRCFILE"; then
 	         cp "$SRCFILE" y.tab.h
 	    fi
@@ -206,25 +231,25 @@
 	esac
     fi
-    if [ ! -f y.tab.h ]; then
+    if test ! -f y.tab.h; then
 	echo >y.tab.h
     fi
-    if [ ! -f y.tab.c ]; then
+    if test ! -f y.tab.c; then
 	echo 'main() { return 0; }' >y.tab.c
     fi
     ;;
 
-  lex|flex)
-    echo 1>&2 "\
-WARNING: \`$1' is missing on your system.  You should only need it if
+  lex*|flex*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
          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 [ $# -ne 1 ]; then
-        eval LASTARG="\${$#}"
-	case "$LASTARG" in
+    if test $# -ne 1; then
+        eval LASTARG=\${$#}
+	case $LASTARG in
 	*.l)
 	    SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
-	    if [ -f "$SRCFILE" ]; then
+	    if test -f "$SRCFILE"; then
 	         cp "$SRCFILE" lex.yy.c
 	    fi
@@ -232,42 +257,30 @@
 	esac
     fi
-    if [ ! -f lex.yy.c ]; then
+    if test ! -f lex.yy.c; then
 	echo 'main() { return 0; }' >lex.yy.c
     fi
     ;;
 
-  help2man)
-    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
-       # We have it, but it failed.
-       exit 1
-    fi
-
-    echo 1>&2 "\
-WARNING: \`$1' is missing on your system.  You should only need it if
+  help2man*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
 	 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 's/.*-o \([^ ]*\).*/\1/p'`
-    if test -z "$file"; then
-	file=`echo "$*" | sed -n 's/.*--output=\([^ ]*\).*/\1/p'`
-    fi
-    if [ -f "$file" ]; then
+    file=`echo "$*" | 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 >$file
 	echo ".ab help2man is required to generate this page"
-	exit 1
-    fi
-    ;;
-
-  makeinfo)
-    if test -z "$run" && (makeinfo --version) > /dev/null 2>&1; then
-       # We have makeinfo, but it failed.
-       exit 1
-    fi
-
-    echo 1>&2 "\
-WARNING: \`$1' is missing on your system.  You should only need it if
+	exit $?
+    fi
+    ;;
+
+  makeinfo*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
          you modified a \`.texi' or \`.texinfo' file, or any other file
          indirectly affecting the aspect of the manual.  The spurious
@@ -275,57 +288,31 @@
          DU, IRIX).  You might want to install the \`Texinfo' package or
          the \`GNU make' package.  Grab either from any GNU archive site."
-    file=`echo "$*" | sed -n 's/.*-o \([^ ]*\).*/\1/p'`
+    # 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
-      file=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
-      file=`sed -n '/^@setfilename/ { s/.* \([^ ]*\) *$/\1/; p; q; }' $file`
-    fi
+      # ... or it is the one specified with @setfilename ...
+      infile=`echo "$*" | 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
     ;;
 
-  tar)
-    shift
-    if test -n "$run"; then
-      echo 1>&2 "ERROR: \`tar' requires --run"
-      exit 1
-    fi
-
-    # We have already tried tar in the generic part.
-    # Look for gnutar/gtar before invocation to avoid ugly error
-    # messages.
-    if (gnutar --version > /dev/null 2>&1); then
-       gnutar "$@" && exit 0
-    fi
-    if (gtar --version > /dev/null 2>&1); then
-       gtar "$@" && exit 0
-    fi
-    firstarg="$1"
-    if shift; then
-	case "$firstarg" in
-	*o*)
-	    firstarg=`echo "$firstarg" | sed s/o//`
-	    tar "$firstarg" "$@" && exit 0
-	    ;;
-	esac
-	case "$firstarg" in
-	*h*)
-	    firstarg=`echo "$firstarg" | sed s/h//`
-	    tar "$firstarg" "$@" && exit 0
-	    ;;
-	esac
-    fi
-
-    echo 1>&2 "\
-WARNING: I can't seem to be able to run \`tar' with the given arguments.
-         You may want to install GNU tar or Free paxutils, or check the
-         command line arguments."
-    exit 1
-    ;;
-
   *)
     echo 1>&2 "\
-WARNING: \`$1' is needed, and you do not seem to have it handy on your
-         system.  You might have modified some files without having the
+WARNING: \`$1' is needed, and is $msg.
+         You might have modified some files without having the
          proper tools for further handling them.  Check the \`README' file,
-         it often tells you about the needed prerequirements for installing
+         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."
@@ -335,2 +322,10 @@
 
 exit 0
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:
