Merging r259342 (with s/p2align 4/align 16) because r258750 is not in 3.8.

[oota-llvm.git] / autoconf / mkinstalldirs

diff --git a/autoconf/mkinstalldirs b/autoconf/mkinstalldirs
index 994d71ce7a77567aed7b77cf56d63455fafae002..1ee2d580177fed6120c60bca38c3a752b0c56824 100755 (executable)
--- a/autoconf/mkinstalldirs
+++ b/autoconf/mkinstalldirs
@@ -1,31 +1,56 @@
 #! /bin/sh
 # mkinstalldirs --- make directory hierarchy
-# Author: Noah Friedman <friedman@prep.ai.mit.edu>
-# Created: 1993-05-16
-# Public domain
 
-# $Id$
+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] [-m mode] dir ..."
+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}" 1>&2; exit 0 ;;
-     -m )                                      # -m PERM arg
-       shift
-       test $# -eq 0 && { echo "${usage}" 1>&2; exit 1; }
-       dirmode="${1}"
-       shift ;;
-     -- ) shift; break ;;                      # stop option processing
-     -* ) echo "${usage}" 1>&2; exit 1 ;;      # unknown option
-     * )  break ;;                             # first non-opt arg
-   esac
+  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
@@ -38,64 +63,88 @@ do
 done
 
 case $# in
-0) exit 0 ;;
+  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 -- . 2>/dev/null; then
-    echo "mkdir -p -- $*"
-    exec mkdir -p -- "$@"
-  fi ;;
-*)
-  if mkdir -m "$dirmode" -p -- . 2>/dev/null; then
-    echo "mkdir -m $dirmode -p -- $*"
-    exec mkdir -m "$dirmode" -p -- "$@"
-  fi ;;
+  '')
+    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
+  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
+    fi
 
-     pathcomp="$pathcomp/"
-   done
+    pathcomp="$pathcomp/"
+  done
 done
 
 exit $errstatus
 
 # Local Variables:
 # mode: shell-script
-# sh-indentation: 3
+# 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:
-# mkinstalldirs ends here