code:
#! /bin/sh
# depcomp - compile a program generating dependencies as side-effects

scriptversion=2013-05-30.07; # UTC

# Copyright (C) 1999-2015 Free Software Foundation, Inc.

# 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
# the Free Software Foundation; either version 2, or (at your option)
# any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.

# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.

case $1 in
  '')
    echo "$0: No command.  Try '$0 --help' for more information." 1>&2
    exit 1;
    ;;
  -h | --h*)
    cat <<\EOF
Usage: depcomp [--help] [--version] PROGRAM [ARGS]

Run PROGRAMS ARGS to compile a file, generating dependencies
as side-effects.

Environment variables:
  depmode     Dependency tracking mode.
  source      Source file read by 'PROGRAMS ARGS'.
  object      Object file output by 'PROGRAMS ARGS'.
  DEPDIR      directory where to store dependencies.
  depfile     Dependency file to output.
  tmpdepfile  Temporary file to use when outputting dependencies.
  libtool     Whether libtool is used (yes/no).

Report bugs to <bug-automake@gnu.org>.
EOF
    exit $?
    ;;
  -v | --v*)
    echo "depcomp $scriptversion"
    exit $?
    ;;
esac

# Get the directory component of the given path, and save it in the
# global variables '$dir'.  Note that this directory component will
# be either empty or ending with a '/' character.  This is deliberate.
set_dir_from ()
{
  case $1 in
    */*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
      *) dir=;;
  esac
}

# Get the suffix-stripped basename of the given path, and save it the
# global variable '$base'.
set_base_from ()
{
  base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
}

# If no dependency file was actually created by the compiler invocation,
# we still have to create a dummy depfile, to avoid errors with the
# Makefile "include basename.Plo" scheme.
make_dummy_depfile ()
{
  echo "#dummy" > "$depfile"
}

# Factor out some common post-processing of the generated depfile.
# Requires the auxiliary global variable '$tmpdepfile' to be set.
aix_post_process_depfile ()
{
  # If the compiler actually managed to produce a dependency file,
  # post-process it.
  if test -f "$tmpdepfile"; then
    # Each line is of the form 'foo.o: dependency.h'.
    # Do two passes, one to just change these to
    #   $object: dependency.h
    # and one to simply output
    #   dependency.h:
    # which is needed to avoid the deleted-header problem.
    { sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
      sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
    } > "$depfile"
    rm -f "$tmpdepfile"
  else
    make_dummy_depfile
  fi
}

# A tabulation character.
tab='	'
# A newline character.
nl='
'
# Character ranges might be problematic outside the C locale.
# These definitions help.
upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
lower=abcdefghijklmnopqrstuvwxyz
digits=0123456789
alpha=${upper}${lower}

if test -z "$depmode" || test -z "$source" || test -z "$object"; then
  echo "depcomp: Variables source, object and depmode must be set" 1>&2
  exit 1
fi

# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
depfile=${depfile-`echo "$object" |
  sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}

rm -f "$tmpdepfile"

# Avoid interferences from the environment.
gccflag= dashmflag=

# Some modes work just like other modes, but use different flags.  We
# parameterize here, but still list the modes in the big case below,
# to make depend.m4 easier to write.  Note that we *cannot* use a case
# here, because this file can only contain one case statement.
if test "$depmode" = hp; then
  # HP compiler uses -M and no extra arg.
  gccflag=-M
  depmode=gcc
fi

if test "$depmode" = dashXmstdout; then
  # This is just like dashmstdout with a different argument.
  dashmflag=-xM
  depmode=dashmstdout
fi

cygpath_u="cygpath -u -f -"
if test "$depmode" = msvcmsys; then
  # This is just like msvisualcpp but w/o cygpath translation.
  # Just convert the backslash-escaped backslashes to single forward
  # slashes to satisfy depend.m4
  cygpath_u='sed s,\\\\,/,g'
  depmode=msvisualcpp
fi

if test "$depmode" = msvc7msys; then
  # This is just like msvc7 but w/o cygpath translation.
  # Just convert the backslash-escaped backslashes to single forward
  # slashes to satisfy depend.m4
  cygpath_u='sed s,\\\\,/,g'
  depmode=msvc7
fi

if test "$depmode" = xlc; then
  # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
  gccflag=-qmakedep=gcc,-MF
  depmode=gcc
fi

case "$depmode" in
gcc3)
## gcc 3 implements dependency tracking that does exactly what
## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like
## it if -MD -MP comes after the -MF stuff.  Hmm.
## Unfortunately, FreeBSD c89 acceptance of flags depends upon
## the command line argument order; so add the flags where they
## appear in depend2.am.  Note that the slowdown incurred here
## affects only configure: in makefiles, %FASTDEP% shortcuts this.
  for arg
  do
    case $arg in
    -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
    *)  set fnord "$@" "$arg" ;;
    esac
    shift # fnord
    shift # $arg
  done
  "$@"
  stat=$?
  if test $stat -ne 0; then
    rm -f "$tmpdepfile"
    exit $stat
  fi
  mv "$tmpdepfile" "$depfile"
  ;;

gcc)
## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
## (see the conditional assignment to $gccflag above).
## There are various ways to get dependency output from gcc.  Here's
## why we pick this rather obscure method:
## - Don't want to use -MD because we'd like the dependencies to end
##   up in a subdir.  Having to rename by hand is ugly.
##   (We might end up doing this anyway to support other compilers.)
## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
##   -MM, not -M (despite what the docs say).  Also, it might not be
##   supported by the other compilers which use the 'gcc' depmode.
## - Using -M directly means running the compiler twice (even worse
##   than renaming).
  if test -z "$gccflag"; then
    gccflag=-MD,
  fi
  "$@" -Wp,"$gccflag$tmpdepfile"
  stat=$?
  if test $stat -ne 0; then
    rm -f "$tmpdepfile"
    exit $stat
  fi
  rm -f "$depfile"
  echo "$object : \\" > "$depfile"
  # The second -e expression handles DOS-style file names with drive
  # letters.
  sed -e 's/^[^:]*: / /' \
      -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
## This next piece of magic avoids the "deleted header file" problem.
## The problem is that when a header file which appears in a .P file
## is deleted, the dependency causes make to die (because there is
## typically no way to rebuild the header).  We avoid this by adding
## dummy dependencies for each header file.  Too bad gcc doesn't do
## this for us directly.
## Some versions of gcc put a space before the ':'.  On the theory
## that the space means something, we add a space to the output as
## well.  hp depmode also adds that space, but also prefixes the VPATH
## to the object.  Take care to not repeat it in the output.
## Some versions of the HPUX 10.20 sed can't process this invocation
## correctly.  Breaking it into two sed invocations is a workaround.
  tr ' ' "$nl" < "$tmpdepfile" \
    | sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
    | sed -e 's/$/ :/' >> "$depfile"
  rm -f "$tmpdepfile"
  ;;

hp)
  # This case exists only to let depend.m4 do its work.  It works by
  # looking at the text of this script.  This case will never be run,
  # since it is checked for above.
  exit 1
  ;;

xlc)
  # This case exists only to let depend.m4 do its work.  It works by
  # looking at the text of this script.  This case will never be run,
  # since it is checked for above.
  exit 1
  ;;

aix)
  # The C for AIX Compiler uses -M and outputs the dependencies
  # in a .u file.  In older versions, this file always lives in the
  # current directory.  Also, the AIX compiler puts '$object:' at the
  # start of each line; $object doesn't have directory information.
  # Version 6 uses the directory in both cases.
  set_dir_from "$object"
  set_base_from "$object"
  if test "$libtool" = yes; then
    tmpdepfile1=$dir$base.u
    tmpdepfile2=$base.u
    tmpdepfile3=$dir.libs/$base.u
    "$@" -Wc,-M
  else
    tmpdepfile1=$dir$base.u
    tmpdepfile2=$dir$base.u
    tmpdepfile3=$dir$base.u
    "$@" -M
  fi
  stat=$?
  if test $stat -ne 0; then
    rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
    exit $stat
  fi

  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
  do
    test -f "$tmpdepfile" && break
  done
  aix_post_process_depfile
  ;;

tcc)
  # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
  # FIXME: That version still under development at the moment of writing.
  #        Make that this statement remains true also for stable, released
  #        versions.
  # It will wrap lines (doesn't matter whether long or short) with a
  # trailing '\', as in:
  #
  #   foo.o : \
  #    foo.c \
  #    foo.h \
  #
  # It will put a trailing '\' even on the last line, and will use leading
  # spaces rather than leading tabs (at least since its commit 0394caf7
  # "Emit spaces for -MD").
  "$@" -MD -MF "$tmpdepfile"
  stat=$?
  if test $stat -ne 0; then
    rm -f "$tmpdepfile"
    exit $stat
  fi
  rm -f "$depfile"
  # Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
  # We have to change lines of the first kind to '$object: \'.
  sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
  # And for each line of the second kind, we have to emit a 'dep.h:'
  # dummy dependency, to avoid the deleted-header problem.
  sed -n -e 's|^  *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
  rm -f "$tmpdepfile"
  ;;

## The order of this option in the case statement is important, since the
## shell code in configure will try each of these formats in the order
## listed in this file.  A plain '-MD' option would be understood by many
## compilers, so we must ensure this comes after the gcc and icc options.
pgcc)
  # Portland's C compiler understands '-MD'.
  # Will always output deps to 'file.d' where file is the root name of the
  # source file under compilation, even if file resides in a subdirectory.
  # The object file name does not affect the name of the '.d' file.
  # pgcc 10.2 will output
  #    foo.o: sub/foo.c sub/foo.h
  # and will wrap long lines using '\' :
  #    foo.o: sub/foo.c ... \
  #     sub/foo.h ... \
  #     ...
  set_dir_from "$object"
  # Use the source, not the object, to determine the base name, since
  # that's sadly what pgcc will do too.
  set_base_from "$source"
  tmpdepfile=$base.d

  # For projects that build the same source file twice into different object
  # files, the pgcc approach of using the *source* file root name can cause
  # problems in parallel builds.  Use a locking strategy to avoid stomping on
  # the same $tmpdepfile.
  lockdir=$base.d-lock
  trap "
    echo '$0: caught signal, cleaning up...' >&2
    rmdir '$lockdir'
    exit 1
  " 1 2 13 15
  numtries=100
  i=$numtries
  while test $i -gt 0; do
    # mkdir is a portable test-and-set.
    if mkdir "$lockdir" 2>/dev/null; then
      # This process acquired the lock.
      "$@" -MD
      stat=$?
      # Release the lock.
      rmdir "$lockdir"
      break
    else
      # If the lock is being held by a different process, wait
      # until the winning process is done or we timeout.
      while test -d "$lockdir" && test $i -gt 0; do
        sleep 1
        i=`expr $i - 1`
      done
    fi
    i=`expr $i - 1`
  done
  trap - 1 2 13 15
  if test $i -le 0; then
    echo "$0: failed to acquire lock after $numtries attempts" >&2
    echo "$0: check lockdir '$lockdir'" >&2
    exit 1
  fi

  if test $stat -ne 0; then
    rm -f "$tmpdepfile"
    exit $stat
  fi
  rm -f "$depfile"
  # Each line is of the form `foo.o: dependent.h',
  # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
  # Do two passes, one to just change these to
  # `$object: dependent.h' and one to simply `dependent.h:'.
  sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
  # Some versions of the HPUX 10.20 sed can't process this invocation
  # correctly.  Breaking it into two sed invocations is a workaround.
  sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
    | sed -e 's/$/ :/' >> "$depfile"
  rm -f "$tmpdepfile"
  ;;

hp2)
  # The "hp" stanza above does not work with aCC (C++) and HP's ia64
  # compilers, which have integrated preprocessors.  The correct option
  # to use with these is +Maked; it writes dependencies to a file named
  # 'foo.d', which lands next to the object file, wherever that
  # happens to be.
  # Much of this is similar to the tru64 case; see comments there.
  set_dir_from  "$object"
  set_base_from "$object"
  if test "$libtool" = yes; then
    tmpdepfile1=$dir$base.d
    tmpdepfile2=$dir.libs/$base.d
    "$@" -Wc,+Maked
  else
    tmpdepfile1=$dir$base.d
    tmpdepfile2=$dir$base.d
    "$@" +Maked
  fi
  stat=$?
  if test $stat -ne 0; then
     rm -f "$tmpdepfile1" "$tmpdepfile2"
     exit $stat
  fi

  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
  do
    test -f "$tmpdepfile" && break
  done
  if test -f "$tmpdepfile"; then
    sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
    # Add 'dependent.h:' lines.
    sed -ne '2,${
               s/^ *//
               s/ \\*$//
               s/$/:/
               p
             }' "$tmpdepfile" >> "$depfile"
  else
    make_dummy_depfile
  fi
  rm -f "$tmpdepfile" "$tmpdepfile2"
  ;;

tru64)
  # The Tru64 compiler uses -MD to generate dependencies as a side
  # effect.  'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
  # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
  # dependencies in 'foo.d' instead, so we check for that too.
  # Subdirectories are respected.
  set_dir_from  "$object"
  set_base_from "$object"

  if test "$libtool" = yes; then
    # Libtool generates 2 separate objects for the 2 libraries.  These
    # two compilations output dependencies in $dir.libs/$base.o.d and
    # in $dir$base.o.d.  We have to check for both files, because
    # one of the two compilations can be disabled.  We should prefer
    # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
    # automatically cleaned when .libs/ is deleted, while ignoring
    # the former would cause a distcleancheck panic.
    tmpdepfile1=$dir$base.o.d          # libtool 1.5
    tmpdepfile2=$dir.libs/$base.o.d    # Likewise.
    tmpdepfile3=$dir.libs/$base.d      # Compaq CCC V6.2-504
    "$@" -Wc,-MD
  else
    tmpdepfile1=$dir$base.d
    tmpdepfile2=$dir$base.d
    tmpdepfile3=$dir$base.d
    "$@" -MD
  fi

  stat=$?
  if test $stat -ne 0; then
    rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
    exit $stat
  fi

  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
  do
    test -f "$tmpdepfile" && break
  done
  # Same post-processing that is required for AIX mode.
  aix_post_process_depfile
  ;;

msvc7)
  if test "$libtool" = yes; then
    showIncludes=-Wc,-showIncludes
  else
    showIncludes=-showIncludes
  fi
  "$@" $showIncludes > "$tmpdepfile"
  stat=$?
  grep -v '^Note: including file: ' "$tmpdepfile"
  if test $stat -ne 0; then
    rm -f "$tmpdepfile"
    exit $stat
  fi
  rm -f "$depfile"
  echo "$object : \\" > "$depfile"
  # The first sed program below extracts the file names and escapes
  # backslashes for cygpath.  The second sed program outputs the file
  # name when reading, but also accumulates all include files in the
  # hold buffer in order to output them again at the end.  This only
  # works with sed implementations that can handle large buffers.
  sed < "$tmpdepfile" -n '
/^Note: including file:  *\(.*\)/ {
  s//\1/
  s/\\/\\\\/g
  p
}' | $cygpath_u | sort -u | sed -n '
s/ /\\ /g
s/\(.*\)/'"$tab"'\1 \\/p
s/.\(.*\) \\/\1:/
H
$ {
  s/.*/'"$tab"'/
  G
  p
}' >> "$depfile"
  echo >> "$depfile" # make sure the fragment doesn't end with a backslash
  rm -f "$tmpdepfile"
  ;;

msvc7msys)
  # This case exists only to let depend.m4 do its work.  It works by
  # looking at the text of this script.  This case will never be run,
  # since it is checked for above.
  exit 1
  ;;

#nosideeffect)
  # This comment above is used by automake to tell side-effect
  # dependency tracking mechanisms from slower ones.

dashmstdout)
  # Important note: in order to support this mode, a compiler *must*
  # always write the preprocessed file to stdout, regardless of -o.
  "$@" || exit $?

  # Remove the call to Libtool.
  if test "$libtool" = yes; then
    while test "X$1" != 'X--mode=compile'; do
      shift
    done
    shift
  fi

  # Remove '-o $object'.
  IFS=" "
  for arg
  do
    case $arg in
    -o)
      shift
      ;;
    $object)
      shift
      ;;
    *)
      set fnord "$@" "$arg"
      shift # fnord
      shift # $arg
      ;;
    esac
  done

  test -z "$dashmflag" && dashmflag=-M
  # Require at least two characters before searching for ':'
  # in the target name.  This is to cope with DOS-style filenames:
  # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
  "$@" $dashmflag |
    sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile"
  rm -f "$depfile"
  cat < "$tmpdepfile" > "$depfile"
  # Some versions of the HPUX 10.20 sed can't process this sed invocation
  # correctly.  Breaking it into two sed invocations is a workaround.
  tr ' ' "$nl" < "$tmpdepfile" \
    | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
    | sed -e 's/$/ :/' >> "$depfile"
  rm -f "$tmpdepfile"
  ;;

dashXmstdout)
  # This case only exists to satisfy depend.m4.  It is never actually
  # run, as this mode is specially recognized in the preamble.
  exit 1
  ;;

makedepend)
  "$@" || exit $?
  # Remove any Libtool call
  if test "$libtool" = yes; then
    while test "X$1" != 'X--mode=compile'; do
      shift
    done
    shift
  fi
  # X makedepend
  shift
  cleared=no eat=no
  for arg
  do
    case $cleared in
    no)
      set ""; shift
      cleared=yes ;;
    esac
    if test $eat = yes; then
      eat=no
      continue
    fi
    case "$arg" in
    -D*|-I*)
      set fnord "$@" "$arg"; shift ;;
    # Strip any option that makedepend may not understand.  Remove
    # the object too, otherwise makedepend will parse it as a source file.
    -arch)
      eat=yes ;;
    -*|$object)
      ;;
    *)
      set fnord "$@" "$arg"; shift ;;
    esac
  done
  obj_suffix=`echo "$object" | sed 's/^.*\././'`
  touch "$tmpdepfile"
  ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
  rm -f "$depfile"
  # makedepend may prepend the VPATH from the source file name to the object.
  # No need to regex-escape $object, excess matching of '.' is harmless.
  sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
  # Some versions of the HPUX 10.20 sed can't process the last invocation
  # correctly.  Breaking it into two sed invocations is a workaround.
  sed '1,2d' "$tmpdepfile" \
    | tr ' ' "$nl" \
    | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
    | sed -e 's/$/ :/' >> "$depfile"
  rm -f "$tmpdepfile" "$tmpdepfile".bak
  ;;

cpp)
  # Important note: in order to support this mode, a compiler *must*
  # always write the preprocessed file to stdout.
  "$@" || exit $?

  # Remove the call to Libtool.
  if test "$libtool" = yes; then
    while test "X$1" != 'X--mode=compile'; do
      shift
    done
    shift
  fi

  # Remove '-o $object'.
  IFS=" "
  for arg
  do
    case $arg in
    -o)
      shift
      ;;
    $object)
      shift
      ;;
    *)
      set fnord "$@" "$arg"
      shift # fnord
      shift # $arg
      ;;
    esac
  done

  "$@" -E \
    | sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
             -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
    | sed '$ s: \\$::' > "$tmpdepfile"
  rm -f "$depfile"
  echo "$object : \\" > "$depfile"
  cat < "$tmpdepfile" >> "$depfile"
  sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
  rm -f "$tmpdepfile"
  ;;

msvisualcpp)
  # Important note: in order to support this mode, a compiler *must*
  # always write the preprocessed file to stdout.
  "$@" || exit $?

  # Remove the call to Libtool.
  if test "$libtool" = yes; then
    while test "X$1" != 'X--mode=compile'; do
      shift
    done
    shift
  fi

  IFS=" "
  for arg
  do
    case "$arg" in
    -o)
      shift
      ;;
    $object)
      shift
      ;;
    "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
        set fnord "$@"
        shift
        shift
        ;;
    *)
        set fnord "$@" "$arg"
        shift
        shift
        ;;
    esac
  done
  "$@" -E 2>/dev/null |
  sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
  rm -f "$depfile"
  echo "$object : \\" > "$depfile"
  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
  echo "$tab" >> "$depfile"
  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
  rm -f "$tmpdepfile"
  ;;

msvcmsys)
  # This case exists only to let depend.m4 do its work.  It works by
  # looking at the text of this script.  This case will never be run,
  # since it is checked for above.
  exit 1
  ;;

none)
  exec "$@"
  ;;

*)
  echo "Unknown depmode $depmode" 1>&2
  exit 1
  ;;
esac

exit 0

# Local Variables:
# mode: shell-script
# sh-indentation: 2
# 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:

path: build-aux/depcomp


code:
#!/bin/sh
# install - install a program, script, or datafile

scriptversion=2013-12-25.23; # UTC

# This originates from X11R5 (mit/util/scripts/install.sh), which was
# later released in X11R6 (xc/config/util/install.sh) with the
# following copyright and license.
#
# Copyright (C) 1994 X Consortium
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# Except as contained in this notice, the name of the X Consortium shall not
# be used in advertising or otherwise to promote the sale, use or other deal-
# ings in this Software without prior written authorization from the X Consor-
# tium.
#
#
# FSF changes to this file are in the public domain.
#
# Calling this script install-sh is preferred over install.sh, to prevent
# 'make' implicit rules from creating a file called install from it
# when there is no Makefile.
#
# This script is compatible with the BSD install script, but was written
# from scratch.

tab='	'
nl='
'
IFS=" $tab$nl"

# Set DOITPROG to "echo" to test this script.

doit=${DOITPROG-}
doit_exec=${doit:-exec}

# Put in absolute file names if you don't have them in your path;
# or use environment vars.

chgrpprog=${CHGRPPROG-chgrp}
chmodprog=${CHMODPROG-chmod}
chownprog=${CHOWNPROG-chown}
cmpprog=${CMPPROG-cmp}
cpprog=${CPPROG-cp}
mkdirprog=${MKDIRPROG-mkdir}
mvprog=${MVPROG-mv}
rmprog=${RMPROG-rm}
stripprog=${STRIPPROG-strip}

posix_mkdir=

# Desired mode of installed file.
mode=0755

chgrpcmd=
chmodcmd=$chmodprog
chowncmd=
mvcmd=$mvprog
rmcmd="$rmprog -f"
stripcmd=

src=
dst=
dir_arg=
dst_arg=

copy_on_change=false
is_target_a_directory=possibly

usage="\
Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
   or: $0 [OPTION]... SRCFILES... DIRECTORY
   or: $0 [OPTION]... -t DIRECTORY SRCFILES...
   or: $0 [OPTION]... -d DIRECTORIES...

In the 1st form, copy SRCFILE to DSTFILE.
In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
In the 4th, create DIRECTORIES.

Options:
     --help     display this help and exit.
     --version  display version info and exit.

  -c            (ignored)
  -C            install only if different (preserve the last data modification time)
  -d            create directories instead of installing files.
  -g GROUP      $chgrpprog installed files to GROUP.
  -m MODE       $chmodprog installed files to MODE.
  -o USER       $chownprog installed files to USER.
  -s            $stripprog installed files.
  -t DIRECTORY  install into DIRECTORY.
  -T            report an error if DSTFILE is a directory.

Environment variables override the default commands:
  CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
  RMPROG STRIPPROG
"

while test $# -ne 0; do
  case $1 in
    -c) ;;

    -C) copy_on_change=true;;

    -d) dir_arg=true;;

    -g) chgrpcmd="$chgrpprog $2"
        shift;;

    --help) echo "$usage"; exit $?;;

    -m) mode=$2
        case $mode in
          *' '* | *"$tab"* | *"$nl"* | *'*'* | *'?'* | *'['*)
            echo "$0: invalid mode: $mode" >&2
            exit 1;;
        esac
        shift;;

    -o) chowncmd="$chownprog $2"
        shift;;

    -s) stripcmd=$stripprog;;

    -t)
        is_target_a_directory=always
        dst_arg=$2
        # Protect names problematic for 'test' and other utilities.
        case $dst_arg in
          -* | [=\(\)!]) dst_arg=./$dst_arg;;
        esac
        shift;;

    -T) is_target_a_directory=never;;

    --version) echo "$0 $scriptversion"; exit $?;;

    --) shift
        break;;

    -*) echo "$0: invalid option: $1" >&2
        exit 1;;

    *)  break;;
  esac
  shift
done

# We allow the use of options -d and -T together, by making -d
# take the precedence; this is for compatibility with GNU install.

if test -n "$dir_arg"; then
  if test -n "$dst_arg"; then
    echo "$0: target directory not allowed when installing a directory." >&2
    exit 1
  fi
fi

if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
  # When -d is used, all remaining arguments are directories to create.
  # When -t is used, the destination is already specified.
  # Otherwise, the last argument is the destination.  Remove it from $@.
  for arg
  do
    if test -n "$dst_arg"; then
      # $@ is not empty: it contains at least $arg.
      set fnord "$@" "$dst_arg"
      shift # fnord
    fi
    shift # arg
    dst_arg=$arg
    # Protect names problematic for 'test' and other utilities.
    case $dst_arg in
      -* | [=\(\)!]) dst_arg=./$dst_arg;;
    esac
  done
fi

if test $# -eq 0; then
  if test -z "$dir_arg"; then
    echo "$0: no input file specified." >&2
    exit 1
  fi
  # It's OK to call 'install-sh -d' without argument.
  # This can happen when creating conditional directories.
  exit 0
fi

if test -z "$dir_arg"; then
  if test $# -gt 1 || test "$is_target_a_directory" = always; then
    if test ! -d "$dst_arg"; then
      echo "$0: $dst_arg: Is not a directory." >&2
      exit 1
    fi
  fi
fi

if test -z "$dir_arg"; then
  do_exit='(exit $ret); exit $ret'
  trap "ret=129; $do_exit" 1
  trap "ret=130; $do_exit" 2
  trap "ret=141; $do_exit" 13
  trap "ret=143; $do_exit" 15

  # Set umask so as not to create temps with too-generous modes.
  # However, 'strip' requires both read and write access to temps.
  case $mode in
    # Optimize common cases.
    *644) cp_umask=133;;
    *755) cp_umask=22;;

    *[0-7])
      if test -z "$stripcmd"; then
        u_plus_rw=
      else
        u_plus_rw='% 200'
      fi
      cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
    *)
      if test -z "$stripcmd"; then
        u_plus_rw=
      else
        u_plus_rw=,u+rw
      fi
      cp_umask=$mode$u_plus_rw;;
  esac
fi

for src
do
  # Protect names problematic for 'test' and other utilities.
  case $src in
    -* | [=\(\)!]) src=./$src;;
  esac

  if test -n "$dir_arg"; then
    dst=$src
    dstdir=$dst
    test -d "$dstdir"
    dstdir_status=$?
  else

    # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
    # might cause directories to be created, which would be especially bad
    # if $src (and thus $dsttmp) contains '*'.
    if test ! -f "$src" && test ! -d "$src"; then
      echo "$0: $src does not exist." >&2
      exit 1
    fi

    if test -z "$dst_arg"; then
      echo "$0: no destination specified." >&2
      exit 1
    fi
    dst=$dst_arg

    # If destination is a directory, append the input filename; won't work
    # if double slashes aren't ignored.
    if test -d "$dst"; then
      if test "$is_target_a_directory" = never; then
        echo "$0: $dst_arg: Is a directory" >&2
        exit 1
      fi
      dstdir=$dst
      dst=$dstdir/`basename "$src"`
      dstdir_status=0
    else
      dstdir=`dirname "$dst"`
      test -d "$dstdir"
      dstdir_status=$?
    fi
  fi

  obsolete_mkdir_used=false

  if test $dstdir_status != 0; then
    case $posix_mkdir in
      '')
        # Create intermediate dirs using mode 755 as modified by the umask.
        # This is like FreeBSD 'install' as of 1997-10-28.
        umask=`umask`
        case $stripcmd.$umask in
          # Optimize common cases.
          *[2367][2367]) mkdir_umask=$umask;;
          .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;

          *[0-7])
            mkdir_umask=`expr $umask + 22 \
              - $umask % 100 % 40 + $umask % 20 \
              - $umask % 10 % 4 + $umask % 2
            `;;
          *) mkdir_umask=$umask,go-w;;
        esac

        # With -d, create the new directory with the user-specified mode.
        # Otherwise, rely on $mkdir_umask.
        if test -n "$dir_arg"; then
          mkdir_mode=-m$mode
        else
          mkdir_mode=
        fi

        posix_mkdir=false
        case $umask in
          *[123567][0-7][0-7])
            # POSIX mkdir -p sets u+wx bits regardless of umask, which
            # is incompatible with FreeBSD 'install' when (umask & 300) != 0.
            ;;
          *)
            tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
            trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0

            if (umask $mkdir_umask &&
                exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
            then
              if test -z "$dir_arg" || {
                   # Check for POSIX incompatibilities with -m.
                   # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
                   # other-writable bit of parent directory when it shouldn't.
                   # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
                   ls_ld_tmpdir=`ls -ld "$tmpdir"`
                   case $ls_ld_tmpdir in
                     d????-?r-*) different_mode=700;;
                     d????-?--*) different_mode=755;;
                     *) false;;
                   esac &&
                   $mkdirprog -m$different_mode -p -- "$tmpdir" && {
                     ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
                     test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
                   }
                 }
              then posix_mkdir=:
              fi
              rmdir "$tmpdir/d" "$tmpdir"
            else
              # Remove any dirs left behind by ancient mkdir implementations.
              rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
            fi
            trap '' 0;;
        esac;;
    esac

    if
      $posix_mkdir && (
        umask $mkdir_umask &&
        $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
      )
    then :
    else

      # The umask is ridiculous, or mkdir does not conform to POSIX,
      # or it failed possibly due to a race condition.  Create the
      # directory the slow way, step by step, checking for races as we go.

      case $dstdir in
        /*) prefix='/';;
        [-=\(\)!]*) prefix='./';;
        *)  prefix='';;
      esac

      oIFS=$IFS
      IFS=/
      set -f
      set fnord $dstdir
      shift
      set +f
      IFS=$oIFS

      prefixes=

      for d
      do
        test X"$d" = X && continue

        prefix=$prefix$d
        if test -d "$prefix"; then
          prefixes=
        else
          if $posix_mkdir; then
            (umask=$mkdir_umask &&
             $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
            # Don't fail if two instances are running concurrently.
            test -d "$prefix" || exit 1
          else
            case $prefix in
              *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
              *) qprefix=$prefix;;
            esac
            prefixes="$prefixes '$qprefix'"
          fi
        fi
        prefix=$prefix/
      done

      if test -n "$prefixes"; then
        # Don't fail if two instances are running concurrently.
        (umask $mkdir_umask &&
         eval "\$doit_exec \$mkdirprog $prefixes") ||
          test -d "$dstdir" || exit 1
        obsolete_mkdir_used=true
      fi
    fi
  fi

  if test -n "$dir_arg"; then
    { test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
    { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
      test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
  else

    # Make a couple of temp file names in the proper directory.
    dsttmp=$dstdir/_inst.$$_
    rmtmp=$dstdir/_rm.$$_

    # Trap to clean up those temp files at exit.
    trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0

    # Copy the file name to the temp name.
    (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&

    # and set any options; do chmod last to preserve setuid bits.
    #
    # If any of these fail, we abort the whole thing.  If we want to
    # ignore errors from any of these, just make sure not to ignore
    # errors from the above "$doit $cpprog $src $dsttmp" command.
    #
    { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
    { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
    { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&

    # If -C, don't bother to copy if it wouldn't change the file.
    if $copy_on_change &&
       old=`LC_ALL=C ls -dlL "$dst"     2>/dev/null` &&
       new=`LC_ALL=C ls -dlL "$dsttmp"  2>/dev/null` &&
       set -f &&
       set X $old && old=:$2:$4:$5:$6 &&
       set X $new && new=:$2:$4:$5:$6 &&
       set +f &&
       test "$old" = "$new" &&
       $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
    then
      rm -f "$dsttmp"
    else
      # Rename the file to the real destination.
      $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||

      # The rename failed, perhaps because mv can't rename something else
      # to itself, or perhaps because mv is so ancient that it does not
      # support -f.
      {
        # Now remove or move aside any old file at destination location.
        # We try this two ways since rm can't unlink itself on some
        # systems and the destination file might be busy for other
        # reasons.  In this case, the final cleanup might fail but the new
        # file should still install successfully.
        {
          test ! -f "$dst" ||
          $doit $rmcmd -f "$dst" 2>/dev/null ||
          { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
            { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
          } ||
          { echo "$0: cannot unlink or rename $dst" >&2
            (exit 1); exit 1
          }
        } &&

        # Now rename the file to the real destination.
        $doit $mvcmd "$dsttmp" "$dst"
      }
    fi || exit 1

    trap '' 0
  fi
done

# 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:

repo_name: mthl/texinfo

path: build-aux/install-sh

license: mit


code:
#!/bin/sh
# Get modification time of a file or directory and pretty-print it.

scriptversion=2010-08-21.06; # UTC

# Copyright (C) 1995-2015 Free Software Foundation, Inc.
# written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, June 1995
#
# 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
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.

# This file is maintained in Automake, please report
# bugs to <bug-automake@gnu.org> or send patches to
# <automake-patches@gnu.org>.

if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
  emulate sh
  NULLCMD=:
  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
  # is contrary to our usage.  Disable this feature.
  alias -g '${1+"$@"}'='"$@"'
  setopt NO_GLOB_SUBST
fi

case $1 in
  '')
     echo "$0: No file.  Try '$0 --help' for more information." 1>&2
     exit 1;
     ;;
  -h | --h*)
    cat <<\EOF
Usage: mdate-sh [--help] [--version] FILE

Pretty-print the modification day of FILE, in the format:
1 January 1970

Report bugs to <bug-automake@gnu.org>.
EOF
    exit $?
    ;;
  -v | --v*)
    echo "mdate-sh $scriptversion"
    exit $?
    ;;
esac

error ()
{
  echo "$0: $1" >&2
  exit 1
}

# Prevent date giving response in another language.
LANG=C
export LANG
LC_ALL=C
export LC_ALL
LC_TIME=C
export LC_TIME

# GNU ls changes its time format in response to the TIME_STYLE
# variable.  Since we cannot assume 'unset' works, revert this
# variable to its documented default.
if test "${TIME_STYLE+set}" = set; then
  TIME_STYLE=posix-long-iso
  export TIME_STYLE
fi

save_arg1=$1

# Find out how to get the extended ls output of a file or directory.
if ls -L /dev/null 1>/dev/null 2>&1; then
  ls_command='ls -L -l -d'
else
  ls_command='ls -l -d'
fi
# Avoid user/group names that might have spaces, when possible.
if ls -n /dev/null 1>/dev/null 2>&1; then
  ls_command="$ls_command -n"
fi

# A 'ls -l' line looks as follows on OS/2.
#  drwxrwx---        0 Aug 11  2001 foo
# This differs from Unix, which adds ownership information.
#  drwxrwx---   2 root  root      4096 Aug 11  2001 foo
#
# To find the date, we split the line on spaces and iterate on words
# until we find a month.  This cannot work with files whose owner is a
# user named "Jan", or "Feb", etc.  However, it's unlikely that '/'
# will be owned by a user whose name is a month.  So we first look at
# the extended ls output of the root directory to decide how many
# words should be skipped to get the date.

# On HPUX /bin/sh, "set" interprets "-rw-r--r--" as options, so the "x" below.
set x`$ls_command /`

# Find which argument is the month.
month=
command=
until test $month
do
  test $# -gt 0 || error "failed parsing '$ls_command /' output"
  shift
  # Add another shift to the command.
  command="$command shift;"
  case $1 in
    Jan) month=January; nummonth=1;;
    Feb) month=February; nummonth=2;;
    Mar) month=March; nummonth=3;;
    Apr) month=April; nummonth=4;;
    May) month=May; nummonth=5;;
    Jun) month=June; nummonth=6;;
    Jul) month=July; nummonth=7;;
    Aug) month=August; nummonth=8;;
    Sep) month=September; nummonth=9;;
    Oct) month=October; nummonth=10;;
    Nov) month=November; nummonth=11;;
    Dec) month=December; nummonth=12;;
  esac
done

test -n "$month" || error "failed parsing '$ls_command /' output"

# Get the extended ls output of the file or directory.
set dummy x`eval "$ls_command \"\\\$save_arg1\""`

# Remove all preceding arguments
eval $command

# Because of the dummy argument above, month is in $2.
#
# On a POSIX system, we should have
#
# $# = 5
# $1 = file size
# $2 = month
# $3 = day
# $4 = year or time
# $5 = filename
#
# On Darwin 7.7.0 and 7.6.0, we have
#
# $# = 4
# $1 = day
# $2 = month
# $3 = year or time
# $4 = filename

# Get the month.
case $2 in
  Jan) month=January; nummonth=1;;
  Feb) month=February; nummonth=2;;
  Mar) month=March; nummonth=3;;
  Apr) month=April; nummonth=4;;
  May) month=May; nummonth=5;;
  Jun) month=June; nummonth=6;;
  Jul) month=July; nummonth=7;;
  Aug) month=August; nummonth=8;;
  Sep) month=September; nummonth=9;;
  Oct) month=October; nummonth=10;;
  Nov) month=November; nummonth=11;;
  Dec) month=December; nummonth=12;;
esac

case $3 in
  ???*) day=$1;;
  *) day=$3; shift;;
esac

# Here we have to deal with the problem that the ls output gives either
# the time of day or the year.
case $3 in
  *:*) set `date`; eval year=\$$#
       case $2 in
	 Jan) nummonthtod=1;;
	 Feb) nummonthtod=2;;
	 Mar) nummonthtod=3;;
	 Apr) nummonthtod=4;;
	 May) nummonthtod=5;;
	 Jun) nummonthtod=6;;
	 Jul) nummonthtod=7;;
	 Aug) nummonthtod=8;;
	 Sep) nummonthtod=9;;
	 Oct) nummonthtod=10;;
	 Nov) nummonthtod=11;;
	 Dec) nummonthtod=12;;
       esac
       # For the first six month of the year the time notation can also
       # be used for files modified in the last year.
       if (expr $nummonth \> $nummonthtod) > /dev/null;
       then
	 year=`expr $year - 1`
       fi;;
  *) year=$3;;
esac

# The result.
echo $day $month $year

# Local Variables:
# mode: shell-script
# sh-indentation: 2
# 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:

path: build-aux/mdate-sh


code:
#! /bin/sh
# Common wrapper for a few potentially missing GNU programs.

scriptversion=2013-10-28.13; # UTC

# Copyright (C) 1996-2014 Free Software Foundation, Inc.
# 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
# the Free Software Foundation; either version 2, or (at your option)
# any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.

if test $# -eq 0; then
  echo 1>&2 "Try '$0 --help' for more information"
  exit 1
fi

case $1 in

  --is-lightweight)
    # Used by our autoconf macros to check whether the available missing
    # script is modern enough.
    exit 0
    ;;

  --run)
    # Back-compat with the calling convention used by older automake.
    shift
    ;;

  -h|--h|--he|--hel|--help)
    echo "\
$0 [OPTION]... PROGRAM [ARGUMENT]...

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

Supported PROGRAM values:
  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.

Send bug reports to <bug-automake@gnu.org>."
    exit $?
    ;;

  -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
    echo "missing $scriptversion (GNU Automake)"
    exit $?
    ;;

  -*)
    echo 1>&2 "$0: unknown '$1' option"
    echo 1>&2 "Try '$0 --help' for more information"
    exit 1
    ;;

esac

# 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

perl_URL=http://www.perl.org/
flex_URL=http://flex.sourceforge.net/
gnu_software_URL=http://www.gnu.org/software

program_details ()
{
  case $1 in
    aclocal|automake)
      echo "The '$1' program is part of the GNU Automake package:"
      echo "<$gnu_software_URL/automake>"
      echo "It also requires GNU Autoconf, GNU m4 and Perl in order to run:"
      echo "<$gnu_software_URL/autoconf>"
      echo "<$gnu_software_URL/m4/>"
      echo "<$perl_URL>"
      ;;
    autoconf|autom4te|autoheader)
      echo "The '$1' program is part of the GNU Autoconf package:"
      echo "<$gnu_software_URL/autoconf/>"
      echo "It also requires GNU m4 and Perl in order to run:"
      echo "<$gnu_software_URL/m4/>"
      echo "<$perl_URL>"
      ;;
  esac
}

give_advice ()
{
  # Normalize program name to check for.
  normalized_program=`echo "$1" | sed '
    s/^gnu-//; t
    s/^gnu//; t
    s/^g//; t'`

  printf '%s\n' "'$1' is $msg."

  configure_deps="'configure.ac' or m4 files included by 'configure.ac'"
  case $normalized_program in
    autoconf*)
      echo "You should only need it if you modified 'configure.ac',"
      echo "or m4 files included by it."
      program_details 'autoconf'
      ;;
    autoheader*)
      echo "You should only need it if you modified 'acconfig.h' or"
      echo "$configure_deps."
      program_details 'autoheader'
      ;;
    automake*)
      echo "You should only need it if you modified 'Makefile.am' or"
      echo "$configure_deps."
      program_details 'automake'
      ;;
    aclocal*)
      echo "You should only need it if you modified 'acinclude.m4' or"
      echo "$configure_deps."
      program_details 'aclocal'
      ;;
   autom4te*)
      echo "You might have modified some maintainer files that require"
      echo "the 'autom4te' program to be rebuilt."
      program_details 'autom4te'
      ;;
    bison*|yacc*)
      echo "You should only need it if you modified a '.y' file."
      echo "You may want to install the GNU Bison package:"
      echo "<$gnu_software_URL/bison/>"
      ;;
    lex*|flex*)
      echo "You should only need it if you modified a '.l' file."
      echo "You may want to install the Fast Lexical Analyzer package:"
      echo "<$flex_URL>"
      ;;
    help2man*)
      echo "You should only need it if you modified a dependency" \
           "of a man page."
      echo "You may want to install the GNU Help2man package:"
      echo "<$gnu_software_URL/help2man/>"
    ;;
    makeinfo*)
      echo "You should only need it if you modified a '.texi' file, or"
      echo "any other file indirectly affecting the aspect of the manual."
      echo "You might want to install the Texinfo package:"
      echo "<$gnu_software_URL/texinfo/>"
      echo "The spurious makeinfo call might also be the consequence of"
      echo "using a buggy 'make' (AIX, DU, IRIX), in which case you might"
      echo "want to install GNU make:"
      echo "<$gnu_software_URL/make/>"
      ;;
    *)
      echo "You might have modified some files without having the proper"
      echo "tools for further handling them.  Check the 'README' file, it"
      echo "often tells you about the needed prerequisites for installing"
      echo "this package.  You may also peek at any GNU archive site, in"
      echo "case some other package contains this missing '$1' program."
      ;;
  esac
}

give_advice "$1" | sed -e '1s/^/WARNING: /' \
                       -e '2,$s/^/         /' >&2

# 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)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-time-zone: "UTC"
# time-stamp-end: "; # UTC"
# End:

path: build-aux/missing


code:
#! /bin/sh
# Copyright (C) 2011-2014 Free Software Foundation, Inc.
#
# 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
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.

# This file is maintained in Automake, please report
# bugs to <bug-automake@gnu.org> or send patches to
# <automake-patches@gnu.org>.

scriptversion=2013-12-23.17; # UTC

# Make unconditional expansion of undefined variables an error.  This
# helps a lot in preventing typo-related bugs.
set -u

me=tap-driver.sh

fatal ()
{
  echo "$me: fatal: $*" >&2
  exit 1
}

usage_error ()
{
  echo "$me: $*" >&2
  print_usage >&2
  exit 2
}

print_usage ()
{
  cat <<END
Usage:
  tap-driver.sh --test-name=NAME --log-file=PATH --trs-file=PATH
                [--expect-failure={yes|no}] [--color-tests={yes|no}]
                [--enable-hard-errors={yes|no}] [--ignore-exit]
                [--diagnostic-string=STRING] [--merge|--no-merge]
                [--comments|--no-comments] [--] TEST-COMMAND
The '--test-name', '-log-file' and '--trs-file' options are mandatory.
END
}

# TODO: better error handling in option parsing (in particular, ensure
# TODO: $log_file, $trs_file and $test_name are defined).
test_name= # Used for reporting.
log_file=  # Where to save the result and output of the test script.
trs_file=  # Where to save the metadata of the test run.
expect_failure=0
color_tests=0
merge=0
ignore_exit=0
comments=0
diag_string='#'
while test $# -gt 0; do
  case $1 in
  --help) print_usage; exit $?;;
  --version) echo "$me $scriptversion"; exit $?;;
  --test-name) test_name=$2; shift;;
  --log-file) log_file=$2; shift;;
  --trs-file) trs_file=$2; shift;;
  --color-tests) color_tests=$2; shift;;
  --expect-failure) expect_failure=$2; shift;;
  --enable-hard-errors) shift;; # No-op.
  --merge) merge=1;;
  --no-merge) merge=0;;
  --ignore-exit) ignore_exit=1;;
  --comments) comments=1;;
  --no-comments) comments=0;;
  --diagnostic-string) diag_string=$2; shift;;
  --) shift; break;;
  -*) usage_error "invalid option: '$1'";;
  esac
  shift
done

test $# -gt 0 || usage_error "missing test command"

case $expect_failure in
  yes) expect_failure=1;;
    *) expect_failure=0;;
esac

if test $color_tests = yes; then
  init_colors='
    color_map["red"]="" # Red.
    color_map["grn"]="" # Green.
    color_map["lgn"]="" # Light green.
    color_map["blu"]="" # Blue.
    color_map["mgn"]="" # Magenta.
    color_map["std"]=""     # No color.
    color_for_result["ERROR"] = "mgn"
    color_for_result["PASS"]  = "grn"
    color_for_result["XPASS"] = "red"
    color_for_result["FAIL"]  = "red"
    color_for_result["XFAIL"] = "lgn"
    color_for_result["SKIP"]  = "blu"'
else
  init_colors=''
fi

# :; is there to work around a bug in bash 3.2 (and earlier) which
# does not always set '$?' properly on redirection failure.
# See the Autoconf manual for more details.
:;{
  (
    # Ignore common signals (in this subshell only!), to avoid potential
    # problems with Korn shells.  Some Korn shells are known to propagate
    # to themselves signals that have killed a child process they were
    # waiting for; this is done at least for SIGINT (and usually only for
    # it, in truth).  Without the `trap' below, such a behaviour could
    # cause a premature exit in the current subshell, e.g., in case the
    # test command it runs gets terminated by a SIGINT.  Thus, the awk
    # script we are piping into would never seen the exit status it
    # expects on its last input line (which is displayed below by the
    # last `echo $?' statement), and would thus die reporting an internal
    # error.
    # For more information, see the Autoconf manual and the threads:
    # <http://lists.gnu.org/archive/html/bug-autoconf/2011-09/msg00004.html>
    # <http://mail.opensolaris.org/pipermail/ksh93-integration-discuss/2009-February/004121.html>
    trap : 1 3 2 13 15
    if test $merge -gt 0; then
      exec 2>&1
    else
      exec 2>&3
    fi
    "$@"
    echo $?
  ) | LC_ALL=C ${AM_TAP_AWK-awk} \
        -v me="$me" \
        -v test_script_name="$test_name" \
        -v log_file="$log_file" \
        -v trs_file="$trs_file" \
        -v expect_failure="$expect_failure" \
        -v merge="$merge" \
        -v ignore_exit="$ignore_exit" \
        -v comments="$comments" \
        -v diag_string="$diag_string" \
'
# TODO: the usages of "cat >&3" below could be optimized when using
#       GNU awk, and/on on systems that supports /dev/fd/.

# Implementation note: in what follows, `result_obj` will be an
# associative array that (partly) simulates a TAP result object
# from the `TAP::Parser` perl module.

## ----------- ##
##  FUNCTIONS  ##
## ----------- ##

function fatal(msg)
{
  print me ": " msg | "cat >&2"
  exit 1
}

function abort(where)
{
  fatal("internal error " where)
}

# Convert a boolean to a "yes"/"no" string.
function yn(bool)
{
  return bool ? "yes" : "no";
}

function add_test_result(result)
{
  if (!test_results_index)
    test_results_index = 0
  test_results_list[test_results_index] = result
  test_results_index += 1
  test_results_seen[result] = 1;
}

# Whether the test script should be re-run by "make recheck".
function must_recheck()
{
  for (k in test_results_seen)
    if (k != "XFAIL" && k != "PASS" && k != "SKIP")
      return 1
  return 0
}

# Whether the content of the log file associated to this test should
# be copied into the "global" test-suite.log.
function copy_in_global_log()
{
  for (k in test_results_seen)
    if (k != "PASS")
      return 1
  return 0
}

function get_global_test_result()
{
    if ("ERROR" in test_results_seen)
      return "ERROR"
    if ("FAIL" in test_results_seen || "XPASS" in test_results_seen)
      return "FAIL"
    all_skipped = 1
    for (k in test_results_seen)
      if (k != "SKIP")
        all_skipped = 0
    if (all_skipped)
      return "SKIP"
    return "PASS";
}

function stringify_result_obj(result_obj)
{
  if (result_obj["is_unplanned"] || result_obj["number"] != testno)
    return "ERROR"

  if (plan_seen == LATE_PLAN)
    return "ERROR"

  if (result_obj["directive"] == "TODO")
    return result_obj["is_ok"] ? "XPASS" : "XFAIL"

  if (result_obj["directive"] == "SKIP")
    return result_obj["is_ok"] ? "SKIP" : COOKED_FAIL;

  if (length(result_obj["directive"]))
      abort("in function stringify_result_obj()")

  return result_obj["is_ok"] ? COOKED_PASS : COOKED_FAIL
}

function decorate_result(result)
{
  color_name = color_for_result[result]
  if (color_name)
    return color_map[color_name] "" result "" color_map["std"]
  # If we are not using colorized output, or if we do not know how
  # to colorize the given result, we should return it unchanged.
  return result
}

function report(result, details)
{
  if (result ~ /^(X?(PASS|FAIL)|SKIP|ERROR)/)
    {
      msg = ": " test_script_name
      add_test_result(result)
    }
  else if (result == "#")
    {
      msg = " " test_script_name ":"
    }
  else
    {
      abort("in function report()")
    }
  if (length(details))
    msg = msg " " details
  # Output on console might be colorized.
  print decorate_result(result) msg
  # Log the result in the log file too, to help debugging (this is
  # especially true when said result is a TAP error or "Bail out!").
  print result msg | "cat >&3";
}

function testsuite_error(error_message)
{
  report("ERROR", "- " error_message)
}

function handle_tap_result()
{
  details = result_obj["number"];
  if (length(result_obj["description"]))
    details = details " " result_obj["description"]

  if (plan_seen == LATE_PLAN)
    {
      details = details " # AFTER LATE PLAN";
    }
  else if (result_obj["is_unplanned"])
    {
       details = details " # UNPLANNED";
    }
  else if (result_obj["number"] != testno)
    {
       details = sprintf("%s # OUT-OF-ORDER (expecting %d)",
                         details, testno);
    }
  else if (result_obj["directive"])
    {
      details = details " # " result_obj["directive"];
      if (length(result_obj["explanation"]))
        details = details " " result_obj["explanation"]
    }

  report(stringify_result_obj(result_obj), details)
}

# `skip_reason` should be empty whenever planned > 0.
function handle_tap_plan(planned, skip_reason)
{
  planned += 0 # Avoid getting confused if, say, `planned` is "00"
  if (length(skip_reason) && planned > 0)
    abort("in function handle_tap_plan()")
  if (plan_seen)
    {
      # Error, only one plan per stream is acceptable.
      testsuite_error("multiple test plans")
      return;
    }
  planned_tests = planned
  # The TAP plan can come before or after *all* the TAP results; we speak
  # respectively of an "early" or a "late" plan.  If we see the plan line
  # after at least one TAP result has been seen, assume we have a late
  # plan; in this case, any further test result seen after the plan will
  # be flagged as an error.
  plan_seen = (testno >= 1 ? LATE_PLAN : EARLY_PLAN)
  # If testno > 0, we have an error ("too many tests run") that will be
  # automatically dealt with later, so do not worry about it here.  If
  # $plan_seen is true, we have an error due to a repeated plan, and that
  # has already been dealt with above.  Otherwise, we have a valid "plan
  # with SKIP" specification, and should report it as a particular kind
  # of SKIP result.
  if (planned == 0 && testno == 0)
    {
      if (length(skip_reason))
        skip_reason = "- "  skip_reason;
      report("SKIP", skip_reason);
    }
}

function extract_tap_comment(line)
{
  if (index(line, diag_string) == 1)
    {
      # Strip leading `diag_string` from `line`.
      line = substr(line, length(diag_string) + 1)
      # And strip any leading and trailing whitespace left.
      sub("^[ \t]*", "", line)
      sub("[ \t]*$", "", line)
      # Return what is left (if any).
      return line;
    }
  return "";
}

# When this function is called, we know that line is a TAP result line,
# so that it matches the (perl) RE "^(not )?ok\b".
function setup_result_obj(line)
{
  # Get the result, and remove it from the line.
  result_obj["is_ok"] = (substr(line, 1, 2) == "ok" ? 1 : 0)
  sub("^(not )?ok[ \t]*", "", line)

  # If the result has an explicit number, get it and strip it; otherwise,
  # automatically assing the next progresive number to it.
  if (line ~ /^[0-9]+$/ || line ~ /^[0-9]+[^a-zA-Z0-9_]/)
    {
      match(line, "^[0-9]+")
      # The final `+ 0` is to normalize numbers with leading zeros.
      result_obj["number"] = substr(line, 1, RLENGTH) + 0
      line = substr(line, RLENGTH + 1)
    }
  else
    {
      result_obj["number"] = testno
    }

  if (plan_seen == LATE_PLAN)
    # No further test results are acceptable after a "late" TAP plan
    # has been seen.
    result_obj["is_unplanned"] = 1
  else if (plan_seen && testno > planned_tests)
    result_obj["is_unplanned"] = 1
  else
    result_obj["is_unplanned"] = 0

  # Strip trailing and leading whitespace.
  sub("^[ \t]*", "", line)
  sub("[ \t]*$", "", line)

  # This will have to be corrected if we have a "TODO"/"SKIP" directive.
  result_obj["description"] = line
  result_obj["directive"] = ""
  result_obj["explanation"] = ""

  if (index(line, "#") == 0)
    return # No possible directive, nothing more to do.

  # Directives are case-insensitive.
  rx = "[ \t]*#[ \t]*([tT][oO][dD][oO]|[sS][kK][iI][pP])[ \t]*"

  # See whether we have the directive, and if yes, where.
  pos = match(line, rx "$")
  if (!pos)
    pos = match(line, rx "[^a-zA-Z0-9_]")

  # If there was no TAP directive, we have nothing more to do.
  if (!pos)
    return

  # Let`s now see if the TAP directive has been escaped.  For example:
  #  escaped:     ok \# SKIP
  #  not escaped: ok \\# SKIP
  #  escaped:     ok \\\\\# SKIP
  #  not escaped: ok \ # SKIP
  if (substr(line, pos, 1) == "#")
    {
      bslash_count = 0
      for (i = pos; i > 1 && substr(line, i - 1, 1) == "\\"; i--)
        bslash_count += 1
      if (bslash_count % 2)
        return # Directive was escaped.
    }

  # Strip the directive and its explanation (if any) from the test
  # description.
  result_obj["description"] = substr(line, 1, pos - 1)
  # Now remove the test description from the line, that has been dealt
  # with already.
  line = substr(line, pos)
  # Strip the directive, and save its value (normalized to upper case).
  sub("^[ \t]*#[ \t]*", "", line)
  result_obj["directive"] = toupper(substr(line, 1, 4))
  line = substr(line, 5)
  # Now get the explanation for the directive (if any), with leading
  # and trailing whitespace removed.
  sub("^[ \t]*", "", line)
  sub("[ \t]*$", "", line)
  result_obj["explanation"] = line
}

function get_test_exit_message(status)
{
  if (status == 0)
    return ""
  if (status !~ /^[1-9][0-9]*$/)
    abort("getting exit status")
  if (status < 127)
    exit_details = ""
  else if (status == 127)
    exit_details = " (command not found?)"
  else if (status >= 128 && status <= 255)
    exit_details = sprintf(" (terminated by signal %d?)", status - 128)
  else if (status > 256 && status <= 384)
    # We used to report an "abnormal termination" here, but some Korn
    # shells, when a child process die due to signal number n, can leave
    # in $? an exit status of 256+n instead of the more standard 128+n.
    # Apparently, both behaviours are allowed by POSIX (2008), so be
    # prepared to handle them both.  See also Austing Group report ID
    # 0000051 <http://www.austingroupbugs.net/view.php?id=51>
    exit_details = sprintf(" (terminated by signal %d?)", status - 256)
  else
    # Never seen in practice.
    exit_details = " (abnormal termination)"
  return sprintf("exited with status %d%s", status, exit_details)
}

function write_test_results()
{
  print ":global-test-result: " get_global_test_result() > trs_file
  print ":recheck: "  yn(must_recheck()) > trs_file
  print ":copy-in-global-log: " yn(copy_in_global_log()) > trs_file
  for (i = 0; i < test_results_index; i += 1)
    print ":test-result: " test_results_list[i] > trs_file
  close(trs_file);
}

BEGIN {

## ------- ##
##  SETUP  ##
## ------- ##

'"$init_colors"'

# Properly initialized once the TAP plan is seen.
planned_tests = 0

COOKED_PASS = expect_failure ? "XPASS": "PASS";
COOKED_FAIL = expect_failure ? "XFAIL": "FAIL";

# Enumeration-like constants to remember which kind of plan (if any)
# has been seen.  It is important that NO_PLAN evaluates "false" as
# a boolean.
NO_PLAN = 0
EARLY_PLAN = 1
LATE_PLAN = 2

testno = 0     # Number of test results seen so far.
bailed_out = 0 # Whether a "Bail out!" directive has been seen.

# Whether the TAP plan has been seen or not, and if yes, which kind
# it is ("early" is seen before any test result, "late" otherwise).
plan_seen = NO_PLAN

## --------- ##
##  PARSING  ##
## --------- ##

is_first_read = 1

while (1)
  {
    # Involutions required so that we are able to read the exit status
    # from the last input line.
    st = getline
    if (st < 0) # I/O error.
      fatal("I/O error while reading from input stream")
    else if (st == 0) # End-of-input
      {
        if (is_first_read)
          abort("in input loop: only one input line")
        break
      }
    if (is_first_read)
      {
        is_first_read = 0
        nextline = $0
        continue
      }
    else
      {
        curline = nextline
        nextline = $0
        $0 = curline
      }
    # Copy any input line verbatim into the log file.
    print | "cat >&3"
    # Parsing of TAP input should stop after a "Bail out!" directive.
    if (bailed_out)
      continue

    # TAP test result.
    if ($0 ~ /^(not )?ok$/ || $0 ~ /^(not )?ok[^a-zA-Z0-9_]/)
      {
        testno += 1
        setup_result_obj($0)
        handle_tap_result()
      }
    # TAP plan (normal or "SKIP" without explanation).
    else if ($0 ~ /^1\.\.[0-9]+[ \t]*$/)
      {
        # The next two lines will put the number of planned tests in $0.
        sub("^1\\.\\.", "")
        sub("[^0-9]*$", "")
        handle_tap_plan($0, "")
        continue
      }
    # TAP "SKIP" plan, with an explanation.
    else if ($0 ~ /^1\.\.0+[ \t]*#/)
      {
        # The next lines will put the skip explanation in $0, stripping
        # any leading and trailing whitespace.  This is a little more
        # tricky in truth, since we want to also strip a potential leading
        # "SKIP" string from the message.
        sub("^[^#]*#[ \t]*(SKIP[: \t][ \t]*)?", "")
        sub("[ \t]*$", "");
        handle_tap_plan(0, $0)
      }
    # "Bail out!" magic.
    # Older versions of prove and TAP::Harness (e.g., 3.17) did not
    # recognize a "Bail out!" directive when preceded by leading
    # whitespace, but more modern versions (e.g., 3.23) do.  So we
    # emulate the latter, "more modern" behaviour.
    else if ($0 ~ /^[ \t]*Bail out!/)
      {
        bailed_out = 1
        # Get the bailout message (if any), with leading and trailing
        # whitespace stripped.  The message remains stored in `$0`.
        sub("^[ \t]*Bail out![ \t]*", "");
        sub("[ \t]*$", "");
        # Format the error message for the
        bailout_message = "Bail out!"
        if (length($0))
          bailout_message = bailout_message " " $0
        testsuite_error(bailout_message)
      }
    # Maybe we have too look for dianogtic comments too.
    else if (comments != 0)
      {
        comment = extract_tap_comment($0);
        if (length(comment))
          report("#", comment);
      }
  }

## -------- ##
##  FINISH  ##
## -------- ##

# A "Bail out!" directive should cause us to ignore any following TAP
# error, as well as a non-zero exit status from the TAP producer.
if (!bailed_out)
  {
    if (!plan_seen)
      {
        testsuite_error("missing test plan")
      }
    else if (planned_tests != testno)
      {
        bad_amount = testno > planned_tests ? "many" : "few"
        testsuite_error(sprintf("too %s tests run (expected %d, got %d)",
                                bad_amount, planned_tests, testno))
      }
    if (!ignore_exit)
      {
        # Fetch exit status from the last line.
        exit_message = get_test_exit_message(nextline)
        if (exit_message)
          testsuite_error(exit_message)
      }
  }

write_test_results()

exit 0

} # End of "BEGIN" block.
'

# TODO: document that we consume the file descriptor 3 :-(
} 3>"$log_file"

test $? -eq 0 || fatal "I/O or internal error"

# Local Variables:
# mode: shell-script
# sh-indentation: 2
# 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:


code:
#! /bin/sh
# test-driver - basic testsuite driver script.

scriptversion=2013-07-13.22; # UTC

# Copyright (C) 2011-2014 Free Software Foundation, Inc.
#
# 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
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.

# This file is maintained in Automake, please report
# bugs to <bug-automake@gnu.org> or send patches to
# <automake-patches@gnu.org>.

# Make unconditional expansion of undefined variables an error.  This
# helps a lot in preventing typo-related bugs.
set -u

usage_error ()
{
  echo "$0: $*" >&2
  print_usage >&2
  exit 2
}

print_usage ()
{
  cat <<END
Usage:
  test-driver --test-name=NAME --log-file=PATH --trs-file=PATH
              [--expect-failure={yes|no}] [--color-tests={yes|no}]
              [--enable-hard-errors={yes|no}] [--]
              TEST-SCRIPT [TEST-SCRIPT-ARGUMENTS]
The '--test-name', '--log-file' and '--trs-file' options are mandatory.
END
}

test_name= # Used for reporting.
log_file=  # Where to save the output of the test script.
trs_file=  # Where to save the metadata of the test run.
expect_failure=no
color_tests=no
enable_hard_errors=yes
while test $# -gt 0; do
  case $1 in
  --help) print_usage; exit $?;;
  --version) echo "test-driver $scriptversion"; exit $?;;
  --test-name) test_name=$2; shift;;
  --log-file) log_file=$2; shift;;
  --trs-file) trs_file=$2; shift;;
  --color-tests) color_tests=$2; shift;;
  --expect-failure) expect_failure=$2; shift;;
  --enable-hard-errors) enable_hard_errors=$2; shift;;
  --) shift; break;;
  -*) usage_error "invalid option: '$1'";;
   *) break;;
  esac
  shift
done

missing_opts=
test x"$test_name" = x && missing_opts="$missing_opts --test-name"
test x"$log_file"  = x && missing_opts="$missing_opts --log-file"
test x"$trs_file"  = x && missing_opts="$missing_opts --trs-file"
if test x"$missing_opts" != x; then
  usage_error "the following mandatory options are missing:$missing_opts"
fi

if test $# -eq 0; then
  usage_error "missing argument"
fi

if test $color_tests = yes; then
  # Keep this in sync with 'lib/am/check.am:$(am__tty_colors)'.
  red='' # Red.
  grn='' # Green.
  lgn='' # Light green.
  blu='' # Blue.
  mgn='' # Magenta.
  std=''     # No color.
else
  red= grn= lgn= blu= mgn= std=
fi

do_exit='rm -f $log_file $trs_file; (exit $st); exit $st'
trap "st=129; $do_exit" 1
trap "st=130; $do_exit" 2
trap "st=141; $do_exit" 13
trap "st=143; $do_exit" 15

# Test script is run here.
"$@" >$log_file 2>&1
estatus=$?

if test $enable_hard_errors = no && test $estatus -eq 99; then
  tweaked_estatus=1
else
  tweaked_estatus=$estatus
fi

case $tweaked_estatus:$expect_failure in
  0:yes) col=$red res=XPASS recheck=yes gcopy=yes;;
  0:*)   col=$grn res=PASS  recheck=no  gcopy=no;;
  77:*)  col=$blu res=SKIP  recheck=no  gcopy=yes;;
  99:*)  col=$mgn res=ERROR recheck=yes gcopy=yes;;
  *:yes) col=$lgn res=XFAIL recheck=no  gcopy=yes;;
  *:*)   col=$red res=FAIL  recheck=yes gcopy=yes;;
esac

# Report the test outcome and exit status in the logs, so that one can
# know whether the test passed or failed simply by looking at the '.log'
# file, without the need of also peaking into the corresponding '.trs'
# file (automake bug#11814).
echo "$res $test_name (exit status: $estatus)" >>$log_file

# Report outcome to console.
echo "${col}${res}${std}: $test_name"

# Register the test result, and other relevant metadata.
echo ":test-result: $res" > $trs_file
echo ":global-test-result: $res" >> $trs_file
echo ":recheck: $recheck" >> $trs_file
echo ":copy-in-global-log: $gcopy" >> $trs_file

# Local Variables:
# mode: shell-script
# sh-indentation: 2
# 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:

path: build-aux/test-driver