llvm/autoconf/mkinstalldirs

#! /bin/sh
# mkinstalldirs --- make directory hierarchy

scriptversion=2004-02-15.20

# Original author: Noah Friedman <friedman@prep.ai.mit.edu>
# Created: 1993-05-16
# Public domain.
#
# This file is maintained in Automake, please report
# bugs to <bug-automake@gnu.org> or send patches to
# <automake-patches@gnu.org>.

errstatus=0
dirmode=""

usage="\
Usage: mkinstalldirs [-h] [--help] [--version] [-m MODE] DIR ...

Create each directory DIR (with mode MODE, if specified), including all
leading file name components.

Report bugs to <bug-automake@gnu.org>."

# process command line arguments
while test $# -gt 0 ; do
  case $1 in
    -h | --help | --h*)         # -h for help
      echo "$usage"
      exit 0
      ;;
    -m)                         # -m PERM arg
      shift
      test $# -eq 0 && { echo "$usage" 1>&2; exit 1; }
      dirmode=$1
      shift
      ;;
    --version)
      echo "$0 $scriptversion"
      exit 0
      ;;
    --)                         # stop option processing
      shift
      break
      ;;
    -*)                         # unknown option
      echo "$usage" 1>&2
      exit 1
      ;;
    *)                          # first non-opt arg
      break
      ;;
  esac
done

for file
do
  if test -d "$file"; then
    shift
  else
    break
  fi
done

case $# in
  0) exit 0 ;;
esac

# Solaris 8's mkdir -p isn't thread-safe.  If you mkdir -p a/b and
# mkdir -p a/c at the same time, both will detect that a is missing,
# one will create a, then the other will try to create a and die with
# a "File exists" error.  This is a problem when calling mkinstalldirs
# from a parallel make.  We use --version in the probe to restrict
# ourselves to GNU mkdir, which is thread-safe.
case $dirmode in
  '')
    if mkdir -p --version . >/dev/null 2>&1 && test ! -d ./--version; then
      # echo "mkdir -p -- $*"
      exec mkdir -p -- "$@"
    else
      # On NextStep and OpenStep, the `mkdir' command does not
      # recognize any option.  It will interpret all options as
      # directories to create, and then abort because `.' already
      # exists.
      test -d ./-p && rmdir ./-p
      test -d ./--version && rmdir ./--version
    fi
    ;;
  *)
    if mkdir -m "$dirmode" -p --version . >/dev/null 2>&1 &&
       test ! -d ./--version; then
      # echo "mkdir -m $dirmode -p -- $*"
      exec mkdir -m "$dirmode" -p -- "$@"
    else
      # Clean up after NextStep and OpenStep mkdir.
      for d in ./-m ./-p ./--version "./$dirmode";
      do
        test -d $d && rmdir $d
      done
    fi
    ;;
esac

for file
do
  set fnord `echo ":$file" | sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`
  shift

  pathcomp=
  for d
  do
    pathcomp="$pathcomp$d"
    case $pathcomp in
      -*) pathcomp=./$pathcomp ;;
    esac

    if test ! -d "$pathcomp"; then
      # echo "mkdir $pathcomp"

      mkdir "$pathcomp" || lasterr=$?

      if test ! -d "$pathcomp"; then
	errstatus=$lasterr
      else
	if test ! -z "$dirmode"; then
	  # echo "chmod $dirmode $pathcomp"
	  lasterr=""
	  chmod "$dirmode" "$pathcomp" || lasterr=$?

	  if test ! -z "$lasterr"; then
	    errstatus=$lasterr
	  fi
	fi
      fi
    fi

    pathcomp="$pathcomp/"
  done
done

exit $errstatus

# 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-end: "$"
# End: