* gcse.c (gcse_main): Do jump bypassing in CPROP2.

[pf3gnuchains/gcc-fork.git] / mkinstalldirs

diff --git a/mkinstalldirs b/mkinstalldirs
index d2d5f21..259dbfc 100755 (executable)
--- a/mkinstalldirs
+++ b/mkinstalldirs
@@ -1,21 +1,33 @@
 #! /bin/sh
 # mkinstalldirs --- make directory hierarchy
-# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+
+scriptversion=2005-06-29.22
+
+# Original author: Noah Friedman <friedman@prep.ai.mit.edu>
 # Created: 1993-05-16
-# Public domain
+# 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=""
+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
+      echo "$usage"
+      exit $?
       ;;
     -m)                         # -m PERM arg
       shift
@@ -23,6 +35,10 @@ while test $# -gt 0 ; do
       dirmode=$1
       shift
       ;;
+    --version)
+      echo "$0 $scriptversion"
+      exit $?
+      ;;
     --)                         # stop option processing
       shift
       break
@@ -50,30 +66,58 @@ 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 -- . 2>/dev/null; then
+    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 "$dirmode" -p -- . 2>/dev/null; then
+    if mkdir -m "$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'`
+  case $file in
+    /*) pathcomp=/ ;;
+    *)  pathcomp= ;;
+  esac
+  oIFS=$IFS
+  IFS=/
+  set fnord $file
   shift
+  IFS=$oIFS
 
-  pathcomp=
   for d
   do
-    pathcomp="$pathcomp$d"
+    test "x$d" = x && continue
+
+    pathcomp=$pathcomp$d
     case $pathcomp in
       -*) pathcomp=./$pathcomp ;;
     esac
@@ -84,21 +128,21 @@ do
       mkdir "$pathcomp" || lasterr=$?
 
       if test ! -d "$pathcomp"; then
-       errstatus=$lasterr
+       errstatus=$lasterr
       else
-       if test ! -z "$dirmode"; then
+       if test ! -z "$dirmode"; then
          echo "chmod $dirmode $pathcomp"
-         lasterr=""
-         chmod "$dirmode" "$pathcomp" || lasterr=$?
+         lasterr=
+         chmod "$dirmode" "$pathcomp" || lasterr=$?
 
-         if test ! -z "$lasterr"; then
-           errstatus=$lasterr
-         fi
-       fi
+         if test ! -z "$lasterr"; then
+           errstatus=$lasterr
+         fi
+       fi
       fi
     fi
 
-    pathcomp="$pathcomp/"
+    pathcomp=$pathcomp/
   done
 done
 
@@ -107,5 +151,8 @@ 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:
-# mkinstalldirs ends here