dunecontrol

    --no-builddir)
      export DUNE_BUILDDIR=""
    ;;
    --skipversioncheck)
      export SKIPVERSIONCHECK=yes
    ;;
    --current)
      while ! test -f $CONTROL; do
        cd ..
        if test "$OLDPWD" = "$PWD"; then
          echo "You are not inside the source tree of a DUNE module." >&2
          exit -1
        fi
      done;
      parse_control $PWD/$CONTROL
      fix_and_assign MODULE "$module"
      export SEARCH_MODULES="$SEARCH_MODULES $MODULE"
      export ONLY="$ONLY $MODULE"
    ;;
    --current-dep)
      while ! test -f $CONTROL; do
        cd ..
        if test "$OLDPWD" = "$PWD"; then
          echo "You are not inside the source tree of a DUNE module." >&2
          exit -1
        fi
      done;
      parse_control $PWD/$CONTROL
      fix_and_assign MODULE "$module"
      export SEARCH_MODULES="$SEARCH_MODULES $MODULE"
    ;;
    --resume)
      export RESUME_FLAG="yes"
    ;;
    --reverse)
      export REVERSE_FLAG="yes"
    ;;
    --skipfirst)
      export SKIPFIRST=yes
    ;;
    --use-cmake|--cmake)
      export DUNE_USE_CMAKE=yes
    ;;
    --no-cmake)
      export DUNE_USE_CMAKE=no
    ;;
    --debug) true ;; # ignore this option, it is handled right at the beginning
    --*)
      usage
      echo "ERROR: Unknown option \`$option'"  >&2
      echo  >&2
      exit 1
      ;;
    *)
      break
    ;;
    esac

    shift
done

extract_multiarch

# create PKG_CONFIG_PATH for installed dune modules
for i in $MULTIARCH_LIBDIR lib64 lib32 lib; do
  if test -d "$PREFIX_DIR/$i/pkgconfig"; then
    export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:$PREFIX_DIR/$i/pkgconfig"
  fi
done

# we assume there should be a command...
if test "x$command" = "x"; then
  usage
  exit 1
fi

case "$command" in
  print)
    create_module_list
    eval "print_module_list ' ' $MODULES"
    echo >&2
    ;;
  info)
    create_module_list
    echo $SORTEDMODULES_INFO
  ;;
  export)
    create_module_list
    DUNE_CONTROL_PATH=""
    for mod in $MODULES; do
      path="$(eval echo \$PATH_$mod)"
      name=$(eval echo \$NAME_$mod)
      if test -f "$path/dune.module"; then
        export DUNE_CONTROL_PATH="$DUNE_CONTROL_PATH:$path/dune.module"
      else
        if test -f "$path/lib/dunecontrol/$name/dune.module"; then
          export DUNE_CONTROL_PATH="$DUNE_CONTROL_PATH:$path/lib/dunecontrol/$name/dune.module"
        else
          echo "ERROR: while creating list of dune.module files"  >&2
          echo "       couldn't find dune.module file for $name in $path" >&2
          echo  >&2
          exit 1
        fi
      fi
    done
    echo export DUNE_CONTROL_PATH=$(echo $DUNE_CONTROL_PATH | $SED -e 's/^://')
    ;;
  printdeps)
    find_modules_in_path
    if test "x$SEARCH_MODULES" == "x"; then
      echo "ERROR: printdeps requires an explicit --module=... parameter"  >&2
      exit 1
    fi
    mainmod=`echo $SEARCH_MODULES`
    name=`eval echo \\${NAME_$mainmod}`
    echo "dependencies for $name"
    ### DEPENDENCIES
    sort_modules $mainmod
    for mod in $SORTEDMODULES_DEPS; do
      echo "  $mod (required)"
    done
    for mod in $SORTEDMODULES_SUGS; do
      echo "  $mod (suggested)"
    done
    ;;
  m4create)
    find_modules_in_path
    if test "x$SEARCH_MODULES" == "x"; then
      echo "ERROR: m4create requires an explicit --module=... parameter"  >&2
      exit 1
    fi
    mainmod=`echo $SEARCH_MODULES`
    eval mainmodpath="\$PATH_$mainmod"
    fname="$mainmodpath/dependencies.m4"
    name=`eval echo \\${NAME_$mainmod}`
    version=`eval echo \\${VERS_$mainmod}`
    maintainer=`eval echo \\${MAIN_$mainmod}`
    # get dependencies
    eval deps=\$DEPS_$mainmod
    #initially remove leading space
    deps=`echo "$deps" | $SED 's/^ *//'`
    while test -n "$deps"; do
      #the end of the name is marked either by space, opening paren
      #or comma
      depname="${deps%%[ (,]*}"
      #remove the name and adjacent whitespace
      deps=`echo "$deps" | $SED 's/^[^ (,]* *//'`
      #check whether there is a dependency version
      case "$deps" in
      '('*) deps="${deps#(}"
            depver="${deps%%)*}"
            deps="${deps#*)}"
            ;;
      *)    depver=
            ;;
      esac
      #remove any leading whitespace or commas for te next iteration
      deps=`echo "$deps" | $SED 's/^[, ]*//'`

      requires="$requires $depname $depver "
    done
    # get suggestions
    eval sugs=\$SUGS_$mainmod
    #initially remove leading space
    sugs=`echo "$sugs" | $SED 's/^ *//'`
    while test -n "$sugs"; do
      #the end of the name is marked either by space, opening paren
      #or comma
      sugsname="${sugs%%[ (,]*}"
      #remove the name and adjacent whitespace
      sugs=`echo "$sugs" | $SED 's/^[^ (,]* *//'`
      #check whether there is a dependency version
      case "$sugs" in
      '('*) sugs="${sugs#(}"
            sugsver="${sugs%%)*}"
            sugs="${sugs#*)}"
            ;;
      *)    sugver=
            ;;
      esac
      #remove any leading whitespace or commas for te next iteration
      sugs=`echo "$sugs" | $SED 's/^[, ]*//'`

      suggests="$suggests $sugsname"
      suggestsall="$suggestsall $sugsname $sugsver "
    done
    # ensure a version number
    if test "x$version" = "x"; then version="0.0"; fi
    echo "writing $fname"
    echo "    for $name $version $maintainer"
    echo "        requires $requires"
    echo "        suggests $suggestsall"
      AC_MACRO_DIR="."
      test ! -d m4 || AC_MACRO_DIR=m4
    cat > "$fname" <<EOF
# dependencies.m4 generated by dunecontrol

m4_define([DUNE_AC_INIT],[
  AC_INIT([$name], [$version], [$maintainer])
  AM_INIT_AUTOMAKE([foreign 1.9 tar-pax])
  m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([no])])
  AC_SUBST([DUNE_MOD_VERSION], [$version])
  AC_SUBST([DUNE_MOD_NAME], [$name])
  AC_SUBST([DUNE_MAINTAINER_NAME], ["$maintainer"])
  DUNE_PARSE_MODULE_VERSION([$name], [$version])
  REQUIRES="$requires"
  AC_SUBST(REQUIRES, [$REQUIRES])
  AC_CONFIG_MACRO_DIR([$AC_MACRO_DIR])
])

AC_DEFUN([DUNE_CHECK_MOD_DEPENDENCIES], [
EOF
    ### initialize AM_CONDITIONAL for suggestions that were not found
    for name in $suggests; do
      mod=$(fix_variable_name $name)
      MOD=`echo $mod | tr [:lower:] [:upper:]`
      if test "x$(eval echo \$HAVE_$mod)" = "x"; then
        cat >> "$fname" <<EOF
  ### add a conditional check for $name,
  # just in case the module is not available at autogen time
  AM_CONDITIONAL([HAVE_${MOD}], false)
EOF
      fi
    done
	### ANALYSE MODULE
    sort_modules $mainmod
    ### DEPENDENCIES
    for mod in $SORTEDMODULES_DEPS; do
      name=`eval echo \\$NAME_$mod`
      MOD=`echo $mod | tr [:lower:] [:upper:]`
      cat >> "$fname" <<EOF
  ### check dependency $name
  # invoke checks required by this module
  AC_REQUIRE([${MOD}_CHECKS])
  # invoke check for this module
  AC_REQUIRE([${MOD}_CHECK_MODULE])
  if test x\$with_$mod = xno; then
    AC_MSG_ERROR([could not find required module _dune_name])
  fi
EOF
    done
    ###
    for mod in $SORTEDMODULES_SUGS; do
      name=`eval echo \\$NAME_$mod`
      MOD=`echo $mod | tr [:lower:] [:upper:]`
      cat >> "$fname" <<EOF
  ### check suggestion $name
  # invoke checks required by this module
  AC_REQUIRE([${MOD}_CHECKS])
  # invoke check for this module
  AC_REQUIRE([${MOD}_CHECK_MODULE])
  if test x\$with_$mod = xno; then
    AC_MSG_WARN([could not find suggested module _dune_name])
  fi
EOF
    done
    ###
    # only test for the module if we really define our own checks
    if test -d m4; then
      mod=$mainmod
      name=`eval echo \\$NAME_$mod`
      MOD=`echo $mod | tr [:lower:] [:upper:]`
      cat >> "$fname" <<EOF
  ### invoke checks for $name
  AC_REQUIRE([${MOD}_CHECKS])
EOF
    fi
    cat >> "$fname" <<EOF
])
EOF
  ;;
  unexport)
    echo export DUNE_CONTROL_PATH=""
  ;;
  help)
    usage
  ;;
  *)
    set +e
    if test "x$USE_CMAKE" = "xno"; then
      echo "$PREFIX_DIR" |$GREP "[ 	]" >/dev/null
     if test "$?" -eq "0"; then
        echo "ERROR: The prefix directory path ($PREFIX_DIR) contains spaces. This is not"
        echo "       supported when using autotools."
        echo "       Either rename the path or activate CMake with --use-cmake switch."
        exit 1
      fi
    fi
    set -e
    if test "$1" = "update"; then export SKIPVERSIONCHECK=yes; fi
    check_commands "$@"
    create_module_list
    NAMES=""
    BUILDMODULES=""
    for mod in $MODULES; do
      if test "$(eval echo \$INST_$mod)" != "yes"; then
        NAMES="$NAMES$(eval echo \$NAME_$mod) "
        BUILDMODULES="$BUILDMODULES$mod "
      fi
    done
    echo "--- going to build $NAMES ---"
    if test -n "$RESUME_FILE"; then
        # write all modules to the resume file
        for mod in $MODULES ; do
            echo "$mod"
        done > "$RESUME_FILE"
    fi

    for mod in $BUILDMODULES; do
      build_module "$mod" "$@"

      if test -n "$RESUME_FILE"; then
          # remove the current module from the resume file
          modules_togo=`cat "$RESUME_FILE"`
          for mod_togo in $modules_togo ; do
              if test "$mod_togo" != "$mod" ; then
                  echo "$mod_togo"
              fi
          done > "$RESUME_FILE"
      fi
    done
    echo "--- done ---"
  ;;
esac

trap - EXIT