diff -r 4ebc2e2fb97c -r 71c04702a3d5 make/autoconf/basics.m4
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/autoconf/basics.m4	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,1283 @@
+#
+# Copyright (c) 2011, 2017, Oracle and/or its affiliates. All rights reserved.
+# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+#
+# This code is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 2 only, as
+# published by the Free Software Foundation.  Oracle designates this
+# particular file as subject to the "Classpath" exception as provided
+# by Oracle in the LICENSE file that accompanied this code.
+#
+# This code 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
+# version 2 for more details (a copy is included in the LICENSE file that
+# accompanied this code).
+#
+# You should have received a copy of the GNU General Public License version
+# 2 along with this work; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+# or visit www.oracle.com if you need additional information or have any
+# questions.
+#
+
+# Create a function/macro that takes a series of named arguments. The call is
+# similar to AC_DEFUN, but the setup of the function looks like this:
+# BASIC_DEFUN_NAMED([MYFUNC], [FOO *BAR], [$@], [
+# ... do something
+#   AC_MSG_NOTICE([Value of BAR is ARG_BAR])
+# ])
+# A star (*) in front of a named argument means that it is required and it's
+# presence will be verified. To pass e.g. the first value as a normal indexed
+# argument, use [m4_shift($@)] as the third argument instead of [$@]. These
+# arguments are referenced in the function by their name prefixed by ARG_, e.g.
+# "ARG_FOO".
+#
+# The generated function can be called like this:
+# MYFUNC(FOO: [foo-val],
+#     BAR: [
+#         $ECHO hello world
+#     ])
+# Note that the argument value must start on the same line as the argument name.
+#
+# Argument 1: Name of the function to define
+# Argument 2: List of legal named arguments, with a * prefix for required arguments
+# Argument 3: Argument array to treat as named, typically $@
+# Argument 4: The main function body
+AC_DEFUN([BASIC_DEFUN_NAMED],
+[
+  AC_DEFUN($1, [
+    m4_foreach(arg, m4_split($2), [
+      m4_if(m4_bregexp(arg, [^\*]), -1,
+        [
+          m4_set_add(legal_named_args, arg)
+        ],
+        [
+          m4_set_add(legal_named_args, m4_substr(arg, 1))
+          m4_set_add(required_named_args, m4_substr(arg, 1))
+        ]
+      )
+    ])
+
+    m4_foreach([arg], [$3], [
+      m4_define(arg_name, m4_substr(arg, 0, m4_bregexp(arg, [: ])))
+      m4_set_contains(legal_named_args, arg_name, [],[AC_MSG_ERROR([Internal error: arg_name is not a valid named argument to [$1]. Valid arguments are 'm4_set_contents(legal_named_args, [ ])'.])])
+      m4_set_remove(required_named_args, arg_name)
+      m4_set_remove(legal_named_args, arg_name)
+      m4_pushdef([ARG_][]arg_name, m4_substr(arg, m4_incr(m4_incr(m4_bregexp(arg, [: ])))))
+      m4_set_add(defined_args, arg_name)
+      m4_undefine([arg_name])
+    ])
+    m4_set_empty(required_named_args, [], [
+      AC_MSG_ERROR([Internal error: Required named arguments are missing for [$1]. Missing arguments: 'm4_set_contents(required_named_args, [ ])'])
+    ])
+    m4_foreach([arg], m4_indir([m4_dquote]m4_set_listc([legal_named_args])), [
+      m4_pushdef([ARG_][]arg, [])
+      m4_set_add(defined_args, arg)
+    ])
+    m4_set_delete(legal_named_args)
+    m4_set_delete(required_named_args)
+
+    # Execute function body
+    $4
+
+    m4_foreach([arg], m4_indir([m4_dquote]m4_set_listc([defined_args])), [
+      m4_popdef([ARG_][]arg)
+    ])
+
+    m4_set_delete(defined_args)
+  ])
+])
+
+# Test if $1 is a valid argument to $3 (often is $JAVA passed as $3)
+# If so, then append $1 to $2 \
+# Also set JVM_ARG_OK to true/false depending on outcome.
+AC_DEFUN([ADD_JVM_ARG_IF_OK],
+[
+  $ECHO "Check if jvm arg is ok: $1" >&AS_MESSAGE_LOG_FD
+  $ECHO "Command: $3 $1 -version" >&AS_MESSAGE_LOG_FD
+  OUTPUT=`$3 $1 -version 2>&1`
+  FOUND_WARN=`$ECHO "$OUTPUT" | $GREP -i warn`
+  FOUND_VERSION=`$ECHO $OUTPUT | $GREP " version \""`
+  if test "x$FOUND_VERSION" != x && test "x$FOUND_WARN" = x; then
+    $2="[$]$2 $1"
+    JVM_ARG_OK=true
+  else
+    $ECHO "Arg failed:" >&AS_MESSAGE_LOG_FD
+    $ECHO "$OUTPUT" >&AS_MESSAGE_LOG_FD
+    JVM_ARG_OK=false
+  fi
+])
+
+# Appends a string to a path variable, only adding the : when needed.
+AC_DEFUN([BASIC_APPEND_TO_PATH],
+[
+  if test "x$2" != x; then
+    if test "x[$]$1" = x; then
+      $1="$2"
+    else
+      $1="[$]$1:$2"
+    fi
+  fi
+])
+
+# Prepends a string to a path variable, only adding the : when needed.
+AC_DEFUN([BASIC_PREPEND_TO_PATH],
+[
+  if test "x$2" != x; then
+    if test "x[$]$1" = x; then
+      $1="$2"
+    else
+      $1="$2:[$]$1"
+    fi
+  fi
+])
+
+# This will make sure the given variable points to a full and proper
+# path. This means:
+# 1) There will be no spaces in the path. On unix platforms,
+#    spaces in the path will result in an error. On Windows,
+#    the path will be rewritten using short-style to be space-free.
+# 2) The path will be absolute, and it will be in unix-style (on
+#     cygwin).
+# $1: The name of the variable to fix
+AC_DEFUN([BASIC_FIXUP_PATH],
+[
+  # Only process if variable expands to non-empty
+
+  if test "x[$]$1" != x; then
+    if test "x$OPENJDK_BUILD_OS_ENV" = "xwindows.cygwin"; then
+      BASIC_FIXUP_PATH_CYGWIN($1)
+    elif test "x$OPENJDK_BUILD_OS_ENV" = "xwindows.msys"; then
+      BASIC_FIXUP_PATH_MSYS($1)
+    else
+      # We're on a unix platform. Hooray! :)
+      path="[$]$1"
+      has_space=`$ECHO "$path" | $GREP " "`
+      if test "x$has_space" != x; then
+        AC_MSG_NOTICE([The path of $1, which resolves as "$path", is invalid.])
+        AC_MSG_ERROR([Spaces are not allowed in this path.])
+      fi
+
+      # Use eval to expand a potential ~
+      eval path="$path"
+      if test ! -f "$path" && test ! -d "$path"; then
+        AC_MSG_ERROR([The path of $1, which resolves as "$path", is not found.])
+      fi
+
+      if test -d "$path"; then
+        $1="`cd "$path"; $THEPWDCMD -L`"
+      else
+        dir="`$DIRNAME "$path"`"
+        base="`$BASENAME "$path"`"
+        $1="`cd "$dir"; $THEPWDCMD -L`/$base"
+      fi
+    fi
+  fi
+])
+
+# This will make sure the given variable points to a executable
+# with a full and proper path. This means:
+# 1) There will be no spaces in the path. On unix platforms,
+#    spaces in the path will result in an error. On Windows,
+#    the path will be rewritten using short-style to be space-free.
+# 2) The path will be absolute, and it will be in unix-style (on
+#     cygwin).
+# Any arguments given to the executable is preserved.
+# If the input variable does not have a directory specification, then
+# it need to be in the PATH.
+# $1: The name of the variable to fix
+AC_DEFUN([BASIC_FIXUP_EXECUTABLE],
+[
+  # Only process if variable expands to non-empty
+
+  if test "x[$]$1" != x; then
+    if test "x$OPENJDK_BUILD_OS_ENV" = "xwindows.cygwin"; then
+      BASIC_FIXUP_EXECUTABLE_CYGWIN($1)
+    elif test "x$OPENJDK_BUILD_OS_ENV" = "xwindows.msys"; then
+      BASIC_FIXUP_EXECUTABLE_MSYS($1)
+    else
+      # We're on a unix platform. Hooray! :)
+      # First separate the path from the arguments. This will split at the first
+      # space.
+      complete="[$]$1"
+      path="${complete%% *}"
+      tmp="$complete EOL"
+      arguments="${tmp#* }"
+
+      # Cannot rely on the command "which" here since it doesn't always work.
+      is_absolute_path=`$ECHO "$path" | $GREP ^/`
+      if test -z "$is_absolute_path"; then
+        # Path to executable is not absolute. Find it.
+        IFS_save="$IFS"
+        IFS=:
+        for p in $PATH; do
+          if test -f "$p/$path" && test -x "$p/$path"; then
+            new_path="$p/$path"
+            break
+          fi
+        done
+        IFS="$IFS_save"
+      else
+        # This is an absolute path, we can use it without further modifications.
+        new_path="$path"
+      fi
+
+      if test "x$new_path" = x; then
+        AC_MSG_NOTICE([The path of $1, which resolves as "$complete", is not found.])
+        has_space=`$ECHO "$complete" | $GREP " "`
+        if test "x$has_space" != x; then
+          AC_MSG_NOTICE([This might be caused by spaces in the path, which is not allowed.])
+        fi
+        AC_MSG_ERROR([Cannot locate the the path of $1])
+      fi
+    fi
+
+    # Now join together the path and the arguments once again
+    if test "x$arguments" != xEOL; then
+      new_complete="$new_path ${arguments% *}"
+    else
+      new_complete="$new_path"
+    fi
+
+    if test "x$complete" != "x$new_complete"; then
+      $1="$new_complete"
+      AC_MSG_NOTICE([Rewriting $1 to "$new_complete"])
+    fi
+  fi
+])
+
+AC_DEFUN([BASIC_REMOVE_SYMBOLIC_LINKS],
+[
+  if test "x$OPENJDK_BUILD_OS" != xwindows; then
+    # Follow a chain of symbolic links. Use readlink
+    # where it exists, else fall back to horribly
+    # complicated shell code.
+    if test "x$READLINK_TESTED" != yes; then
+      # On MacOSX there is a readlink tool with a different
+      # purpose than the GNU readlink tool. Check the found readlink.
+      ISGNU=`$READLINK --version 2>&1 | $GREP GNU`
+      if test "x$ISGNU" = x; then
+        # A readlink that we do not know how to use.
+        # Are there other non-GNU readlinks out there?
+        READLINK_TESTED=yes
+        READLINK=
+      fi
+    fi
+
+    if test "x$READLINK" != x; then
+      $1=`$READLINK -f [$]$1`
+    else
+      # Save the current directory for restoring afterwards
+      STARTDIR=$PWD
+      COUNTER=0
+      sym_link_dir=`$DIRNAME [$]$1`
+      sym_link_file=`$BASENAME [$]$1`
+      cd $sym_link_dir
+      # Use -P flag to resolve symlinks in directories.
+      cd `$THEPWDCMD -P`
+      sym_link_dir=`$THEPWDCMD -P`
+      # Resolve file symlinks
+      while test $COUNTER -lt 20; do
+        ISLINK=`$LS -l $sym_link_dir/$sym_link_file | $GREP '\->' | $SED -e 's/.*-> \(.*\)/\1/'`
+        if test "x$ISLINK" == x; then
+          # This is not a symbolic link! We are done!
+          break
+        fi
+        # Again resolve directory symlinks since the target of the just found
+        # link could be in a different directory
+        cd `$DIRNAME $ISLINK`
+        sym_link_dir=`$THEPWDCMD -P`
+        sym_link_file=`$BASENAME $ISLINK`
+        let COUNTER=COUNTER+1
+      done
+      cd $STARTDIR
+      $1=$sym_link_dir/$sym_link_file
+    fi
+  fi
+])
+
+# Register a --with argument but mark it as deprecated
+# $1: The name of the with argument to deprecate, not including --with-
+AC_DEFUN([BASIC_DEPRECATED_ARG_WITH],
+[
+  AC_ARG_WITH($1, [AS_HELP_STRING([--with-$1],
+      [Deprecated. Option is kept for backwards compatibility and is ignored])],
+      [AC_MSG_WARN([Option --with-$1 is deprecated and will be ignored.])])
+])
+
+# Register a --enable argument but mark it as deprecated
+# $1: The name of the with argument to deprecate, not including --enable-
+# $2: The name of the argument to deprecate, in shell variable style (i.e. with _ instead of -)
+# $3: Messages to user.
+AC_DEFUN([BASIC_DEPRECATED_ARG_ENABLE],
+[
+  AC_ARG_ENABLE($1, [AS_HELP_STRING([--enable-$1],
+      [Deprecated. Option is kept for backwards compatibility and is ignored])])
+  if test "x$enable_$2" != x; then
+    AC_MSG_WARN([Option --enable-$1 is deprecated and will be ignored.])
+
+    if test "x$3" != x; then
+      AC_MSG_WARN([$3])
+    fi
+
+  fi
+])
+
+AC_DEFUN_ONCE([BASIC_INIT],
+[
+  # Save the original command line. This is passed to us by the wrapper configure script.
+  AC_SUBST(CONFIGURE_COMMAND_LINE)
+  # Save the path variable before it gets changed
+  ORIGINAL_PATH="$PATH"
+  AC_SUBST(ORIGINAL_PATH)
+  DATE_WHEN_CONFIGURED=`LANG=C date`
+  AC_SUBST(DATE_WHEN_CONFIGURED)
+  AC_MSG_NOTICE([Configuration created at $DATE_WHEN_CONFIGURED.])
+  AC_MSG_NOTICE([configure script generated at timestamp $DATE_WHEN_GENERATED.])
+])
+
+# Test that variable $1 denoting a program is not empty. If empty, exit with an error.
+# $1: variable to check
+AC_DEFUN([BASIC_CHECK_NONEMPTY],
+[
+  if test "x[$]$1" = x; then
+    AC_MSG_ERROR([Could not find required tool for $1])
+  fi
+])
+
+# Check that there are no unprocessed overridden variables left.
+# If so, they are an incorrect argument and we will exit with an error.
+AC_DEFUN([BASIC_CHECK_LEFTOVER_OVERRIDDEN],
+[
+  if test "x$CONFIGURE_OVERRIDDEN_VARIABLES" != x; then
+    # Replace the separating ! with spaces before presenting for end user.
+    unknown_variables=${CONFIGURE_OVERRIDDEN_VARIABLES//!/ }
+    AC_MSG_WARN([The following variables might be unknown to configure: $unknown_variables])
+  fi
+])
+
+# Setup a tool for the given variable. If correctly specified by the user,
+# use that value, otherwise search for the tool using the supplied code snippet.
+# $1: variable to set
+# $2: code snippet to call to look for the tool
+# $3: code snippet to call if variable was used to find tool
+AC_DEFUN([BASIC_SETUP_TOOL],
+[
+  # Publish this variable in the help.
+  AC_ARG_VAR($1, [Override default value for $1])
+
+  if [[ -z "${$1+x}" ]]; then
+    # The variable is not set by user, try to locate tool using the code snippet
+    $2
+  else
+    # The variable is set, but is it from the command line or the environment?
+
+    # Try to remove the string !$1! from our list.
+    try_remove_var=${CONFIGURE_OVERRIDDEN_VARIABLES//!$1!/}
+    if test "x$try_remove_var" = "x$CONFIGURE_OVERRIDDEN_VARIABLES"; then
+      # If it failed, the variable was not from the command line. Ignore it,
+      # but warn the user (except for BASH, which is always set by the calling BASH).
+      if test "x$1" != xBASH; then
+        AC_MSG_WARN([Ignoring value of $1 from the environment. Use command line variables instead.])
+      fi
+      # Try to locate tool using the code snippet
+      $2
+    else
+      # If it succeeded, then it was overridden by the user. We will use it
+      # for the tool.
+
+      # First remove it from the list of overridden variables, so we can test
+      # for unknown variables in the end.
+      CONFIGURE_OVERRIDDEN_VARIABLES="$try_remove_var"
+
+      # Check if we try to supply an empty value
+      if test "x[$]$1" = x; then
+        AC_MSG_NOTICE([Setting user supplied tool $1= (no value)])
+        AC_MSG_CHECKING([for $1])
+        AC_MSG_RESULT([disabled])
+      else
+        # Check if the provided tool contains a complete path.
+        tool_specified="[$]$1"
+        tool_basename="${tool_specified##*/}"
+        if test "x$tool_basename" = "x$tool_specified"; then
+          # A command without a complete path is provided, search $PATH.
+          AC_MSG_NOTICE([Will search for user supplied tool $1=$tool_basename])
+          AC_PATH_PROG($1, $tool_basename)
+          if test "x[$]$1" = x; then
+            AC_MSG_ERROR([User supplied tool $tool_basename could not be found])
+          fi
+        else
+          # Otherwise we believe it is a complete path. Use it as it is.
+          AC_MSG_NOTICE([Will use user supplied tool $1=$tool_specified])
+          AC_MSG_CHECKING([for $1])
+          if test ! -x "$tool_specified"; then
+            AC_MSG_RESULT([not found])
+            AC_MSG_ERROR([User supplied tool $1=$tool_specified does not exist or is not executable])
+          fi
+          AC_MSG_RESULT([$tool_specified])
+        fi
+      fi
+    fi
+    $3
+  fi
+])
+
+# Call BASIC_SETUP_TOOL with AC_PATH_PROGS to locate the tool
+# $1: variable to set
+# $2: executable name (or list of names) to look for
+# $3: [path]
+AC_DEFUN([BASIC_PATH_PROGS],
+[
+  BASIC_SETUP_TOOL($1, [AC_PATH_PROGS($1, $2, , $3)])
+])
+
+# Call BASIC_SETUP_TOOL with AC_CHECK_TOOLS to locate the tool
+# $1: variable to set
+# $2: executable name (or list of names) to look for
+AC_DEFUN([BASIC_CHECK_TOOLS],
+[
+  BASIC_SETUP_TOOL($1, [AC_CHECK_TOOLS($1, $2)])
+])
+
+# Like BASIC_PATH_PROGS but fails if no tool was found.
+# $1: variable to set
+# $2: executable name (or list of names) to look for
+# $3: [path]
+AC_DEFUN([BASIC_REQUIRE_PROGS],
+[
+  BASIC_PATH_PROGS($1, $2, , $3)
+  BASIC_CHECK_NONEMPTY($1)
+])
+
+# Like BASIC_SETUP_TOOL but fails if no tool was found.
+# $1: variable to set
+# $2: autoconf macro to call to look for the special tool
+AC_DEFUN([BASIC_REQUIRE_SPECIAL],
+[
+  BASIC_SETUP_TOOL($1, [$2])
+  BASIC_CHECK_NONEMPTY($1)
+])
+
+# Setup the most fundamental tools that relies on not much else to set up,
+# but is used by much of the early bootstrap code.
+AC_DEFUN_ONCE([BASIC_SETUP_FUNDAMENTAL_TOOLS],
+[
+  # Start with tools that do not need have cross compilation support
+  # and can be expected to be found in the default PATH. These tools are
+  # used by configure.
+
+  # First are all the simple required tools.
+  BASIC_REQUIRE_PROGS(BASENAME, basename)
+  BASIC_REQUIRE_PROGS(BASH, bash)
+  BASIC_REQUIRE_PROGS(CAT, cat)
+  BASIC_REQUIRE_PROGS(CHMOD, chmod)
+  BASIC_REQUIRE_PROGS(CMP, cmp)
+  BASIC_REQUIRE_PROGS(COMM, comm)
+  BASIC_REQUIRE_PROGS(CP, cp)
+  BASIC_REQUIRE_PROGS(CUT, cut)
+  BASIC_REQUIRE_PROGS(DATE, date)
+  BASIC_REQUIRE_PROGS(DIFF, [gdiff diff])
+  BASIC_REQUIRE_PROGS(DIRNAME, dirname)
+  BASIC_REQUIRE_PROGS(ECHO, echo)
+  BASIC_REQUIRE_PROGS(EXPR, expr)
+  BASIC_REQUIRE_PROGS(FILE, file)
+  BASIC_REQUIRE_PROGS(FIND, find)
+  BASIC_REQUIRE_PROGS(HEAD, head)
+  BASIC_REQUIRE_PROGS(GUNZIP, gunzip)
+  BASIC_REQUIRE_PROGS(GZIP, pigz gzip)
+  BASIC_REQUIRE_PROGS(LN, ln)
+  BASIC_REQUIRE_PROGS(LS, ls)
+  BASIC_REQUIRE_PROGS(MKDIR, mkdir)
+  BASIC_REQUIRE_PROGS(MKTEMP, mktemp)
+  BASIC_REQUIRE_PROGS(MV, mv)
+  BASIC_REQUIRE_PROGS(NAWK, [nawk gawk awk])
+  BASIC_REQUIRE_PROGS(PRINTF, printf)
+  BASIC_REQUIRE_PROGS(RM, rm)
+  BASIC_REQUIRE_PROGS(RMDIR, rmdir)
+  BASIC_REQUIRE_PROGS(SH, sh)
+  BASIC_REQUIRE_PROGS(SORT, sort)
+  BASIC_REQUIRE_PROGS(TAIL, tail)
+  BASIC_REQUIRE_PROGS(TAR, gtar tar)
+  BASIC_REQUIRE_PROGS(TEE, tee)
+  BASIC_REQUIRE_PROGS(TOUCH, touch)
+  BASIC_REQUIRE_PROGS(TR, tr)
+  BASIC_REQUIRE_PROGS(UNAME, uname)
+  BASIC_REQUIRE_PROGS(UNIQ, uniq)
+  BASIC_REQUIRE_PROGS(WC, wc)
+  BASIC_REQUIRE_PROGS(WHICH, which)
+  BASIC_REQUIRE_PROGS(XARGS, xargs)
+
+  # Then required tools that require some special treatment.
+  BASIC_REQUIRE_SPECIAL(AWK, [AC_PROG_AWK])
+  BASIC_REQUIRE_SPECIAL(GREP, [AC_PROG_GREP])
+  BASIC_REQUIRE_SPECIAL(EGREP, [AC_PROG_EGREP])
+  BASIC_REQUIRE_SPECIAL(FGREP, [AC_PROG_FGREP])
+  BASIC_REQUIRE_SPECIAL(SED, [AC_PROG_SED])
+
+  # Always force rm.
+  RM="$RM -f"
+
+  # pwd behaves differently on various platforms and some don't support the -L flag.
+  # Always use the bash builtin pwd to get uniform behavior.
+  THEPWDCMD=pwd
+
+  # These are not required on all platforms
+  BASIC_PATH_PROGS(CYGPATH, cygpath)
+  BASIC_PATH_PROGS(READLINK, [greadlink readlink])
+  BASIC_PATH_PROGS(DF, df)
+  BASIC_PATH_PROGS(CPIO, [cpio bsdcpio])
+  BASIC_PATH_PROGS(NICE, nice)
+  BASIC_PATH_PROGS(PANDOC, pandoc)
+])
+
+# Setup basic configuration paths, and platform-specific stuff related to PATHs.
+AC_DEFUN_ONCE([BASIC_SETUP_PATHS],
+[
+  # Save the current directory this script was started from
+  CURDIR="$PWD"
+
+  # We might need to rewrite ORIGINAL_PATH, if it includes "#", to quote them
+  # for make. We couldn't do this when we retrieved ORIGINAL_PATH, since SED
+  # was not available at that time.
+  REWRITTEN_PATH=`$ECHO "$ORIGINAL_PATH" | $SED -e 's/#/\\\\#/g'`
+  if test "x$REWRITTEN_PATH" != "x$ORIGINAL_PATH"; then
+    ORIGINAL_PATH="$REWRITTEN_PATH"
+    AC_MSG_NOTICE([Rewriting ORIGINAL_PATH to $REWRITTEN_PATH])
+  fi
+
+  if test "x$OPENJDK_TARGET_OS" = "xwindows"; then
+    PATH_SEP=";"
+    BASIC_CHECK_PATHS_WINDOWS
+  else
+    PATH_SEP=":"
+  fi
+  AC_SUBST(PATH_SEP)
+
+  # We get the top-level directory from the supporting wrappers.
+  AC_MSG_CHECKING([for top-level directory])
+  AC_MSG_RESULT([$TOPDIR])
+  AC_SUBST(TOPDIR)
+
+  # Save the original version of TOPDIR for string comparisons
+  ORIGINAL_TOPDIR="$TOPDIR"
+  AC_SUBST(ORIGINAL_TOPDIR)
+
+  # We can only call BASIC_FIXUP_PATH after BASIC_CHECK_PATHS_WINDOWS.
+  BASIC_FIXUP_PATH(CURDIR)
+  BASIC_FIXUP_PATH(TOPDIR)
+  # SRC_ROOT is a traditional alias for TOPDIR.
+  SRC_ROOT=$TOPDIR
+
+  # Calculate a canonical version of TOPDIR for string comparisons
+  CANONICAL_TOPDIR=$TOPDIR
+  BASIC_REMOVE_SYMBOLIC_LINKS([CANONICAL_TOPDIR])
+  AC_SUBST(CANONICAL_TOPDIR)
+
+  # Locate the directory of this script.
+  AUTOCONF_DIR=$TOPDIR/common/autoconf
+
+  # Setup username (for use in adhoc version strings etc)
+  # Outer [ ] to quote m4.
+  [ USERNAME=`$ECHO "$USER" | $TR -d -c '[a-z][A-Z][0-9]'` ]
+  AC_SUBST(USERNAME)
+])
+
+# Evaluates platform specific overrides for devkit variables.
+# $1: Name of variable
+AC_DEFUN([BASIC_EVAL_DEVKIT_VARIABLE],
+[
+  if test "x[$]$1" = x; then
+    eval $1="\${$1_${OPENJDK_TARGET_CPU}}"
+  fi
+])
+
+AC_DEFUN_ONCE([BASIC_SETUP_DEVKIT],
+[
+  AC_ARG_WITH([devkit], [AS_HELP_STRING([--with-devkit],
+      [use this devkit for compilers, tools and resources])],
+      [
+        BASIC_FIXUP_PATH([with_devkit])
+        DEVKIT_ROOT="$with_devkit"
+        # Check for a meta data info file in the root of the devkit
+        if test -f "$DEVKIT_ROOT/devkit.info"; then
+          . $DEVKIT_ROOT/devkit.info
+          # This potentially sets the following:
+          # A descriptive name of the devkit
+          BASIC_EVAL_DEVKIT_VARIABLE([DEVKIT_NAME])
+          # Corresponds to --with-extra-path
+          BASIC_EVAL_DEVKIT_VARIABLE([DEVKIT_EXTRA_PATH])
+          # Corresponds to --with-toolchain-path
+          BASIC_EVAL_DEVKIT_VARIABLE([DEVKIT_TOOLCHAIN_PATH])
+          # Corresponds to --with-sysroot
+          BASIC_EVAL_DEVKIT_VARIABLE([DEVKIT_SYSROOT])
+
+          # Identifies the Visual Studio version in the devkit
+          BASIC_EVAL_DEVKIT_VARIABLE([DEVKIT_VS_VERSION])
+          # The Visual Studio include environment variable
+          BASIC_EVAL_DEVKIT_VARIABLE([DEVKIT_VS_INCLUDE])
+          # The Visual Studio lib environment variable
+          BASIC_EVAL_DEVKIT_VARIABLE([DEVKIT_VS_LIB])
+          # Corresponds to --with-msvcr-dll
+          BASIC_EVAL_DEVKIT_VARIABLE([DEVKIT_MSVCR_DLL])
+          # Corresponds to --with-msvcp-dll
+          BASIC_EVAL_DEVKIT_VARIABLE([DEVKIT_MSVCP_DLL])
+        fi
+
+        AC_MSG_CHECKING([for devkit])
+        if test "x$DEVKIT_NAME" != x; then
+          AC_MSG_RESULT([$DEVKIT_NAME in $DEVKIT_ROOT])
+        else
+          AC_MSG_RESULT([$DEVKIT_ROOT])
+        fi
+
+        BASIC_PREPEND_TO_PATH([EXTRA_PATH],$DEVKIT_EXTRA_PATH)
+
+        # Fallback default of just /bin if DEVKIT_PATH is not defined
+        if test "x$DEVKIT_TOOLCHAIN_PATH" = x; then
+          DEVKIT_TOOLCHAIN_PATH="$DEVKIT_ROOT/bin"
+        fi
+        BASIC_PREPEND_TO_PATH([TOOLCHAIN_PATH],$DEVKIT_TOOLCHAIN_PATH)
+
+        # If DEVKIT_SYSROOT is set, use that, otherwise try a couple of known
+        # places for backwards compatiblity.
+        if test "x$DEVKIT_SYSROOT" != x; then
+          SYSROOT="$DEVKIT_SYSROOT"
+        elif test -d "$DEVKIT_ROOT/$host_alias/libc"; then
+          SYSROOT="$DEVKIT_ROOT/$host_alias/libc"
+        elif test -d "$DEVKIT_ROOT/$host/sys-root"; then
+          SYSROOT="$DEVKIT_ROOT/$host/sys-root"
+        fi
+      ]
+  )
+
+  # You can force the sysroot if the sysroot encoded into the compiler tools
+  # is not correct.
+  AC_ARG_WITH(sys-root, [AS_HELP_STRING([--with-sys-root],
+      [alias for --with-sysroot for backwards compatability])],
+      [SYSROOT=$with_sys_root]
+  )
+
+  AC_ARG_WITH(sysroot, [AS_HELP_STRING([--with-sysroot],
+      [use this directory as sysroot])],
+      [SYSROOT=$with_sysroot]
+  )
+
+  AC_ARG_WITH([tools-dir], [AS_HELP_STRING([--with-tools-dir],
+      [alias for --with-toolchain-path for backwards compatibility])],
+      [BASIC_PREPEND_TO_PATH([TOOLCHAIN_PATH],$with_tools_dir)]
+  )
+
+  AC_ARG_WITH([toolchain-path], [AS_HELP_STRING([--with-toolchain-path],
+      [prepend these directories when searching for toolchain binaries (compilers etc)])],
+      [BASIC_PREPEND_TO_PATH([TOOLCHAIN_PATH],$with_toolchain_path)]
+  )
+
+  AC_ARG_WITH([extra-path], [AS_HELP_STRING([--with-extra-path],
+      [prepend these directories to the default path])],
+      [BASIC_PREPEND_TO_PATH([EXTRA_PATH],$with_extra_path)]
+  )
+
+  if test "x$OPENJDK_BUILD_OS" = "xmacosx"; then
+    # If a devkit has been supplied, find xcodebuild in the toolchain_path.
+    # If not, detect if Xcode is installed by running xcodebuild -version
+    # if no Xcode installed, xcodebuild exits with 1
+    # if Xcode is installed, even if xcode-select is misconfigured, then it exits with 0
+    if test "x$DEVKIT_ROOT" != x || /usr/bin/xcodebuild -version >/dev/null 2>&1; then
+      # We need to use xcodebuild in the toolchain dir provided by the user, this will
+      # fall back on the stub binary in /usr/bin/xcodebuild
+      AC_PATH_PROG([XCODEBUILD], [xcodebuild], [/usr/bin/xcodebuild], [$TOOLCHAIN_PATH])
+    else
+      # this should result in SYSROOT being empty, unless --with-sysroot is provided
+      # when only the command line tools are installed there are no SDKs, so headers
+      # are copied into the system frameworks
+      XCODEBUILD=
+      AC_SUBST(XCODEBUILD)
+    fi
+
+    AC_MSG_CHECKING([for sdk name])
+    AC_ARG_WITH([sdk-name], [AS_HELP_STRING([--with-sdk-name],
+        [use the platform SDK of the given name. @<:@macosx@:>@])],
+        [SDKNAME=$with_sdk_name]
+    )
+    AC_MSG_RESULT([$SDKNAME])
+
+    # if toolchain path is specified then don't rely on system headers, they may not compile
+    HAVE_SYSTEM_FRAMEWORK_HEADERS=0
+    test -z "$TOOLCHAIN_PATH" && \
+      HAVE_SYSTEM_FRAMEWORK_HEADERS=`test ! -f /System/Library/Frameworks/Foundation.framework/Headers/Foundation.h; echo $?`
+
+    if test -z "$SYSROOT"; then
+      if test -n "$XCODEBUILD"; then
+        # if we don't have system headers, use default SDK name (last resort)
+        if test -z "$SDKNAME" -a $HAVE_SYSTEM_FRAMEWORK_HEADERS -eq 0; then
+          SDKNAME=${SDKNAME:-macosx}
+        fi
+
+        if test -n "$SDKNAME"; then
+          # Call xcodebuild to determine SYSROOT
+          SYSROOT=`"$XCODEBUILD" -sdk $SDKNAME -version | $GREP '^Path: ' | $SED 's/Path: //'`
+        fi
+      else
+        if test $HAVE_SYSTEM_FRAMEWORK_HEADERS -eq 0; then
+          AC_MSG_ERROR([No xcodebuild tool and no system framework headers found, use --with-sysroot or --with-sdk-name to provide a path to a valid SDK])
+        fi
+      fi
+    else
+      # warn user if --with-sdk-name was also set
+      if test -n "$with_sdk_name"; then
+        AC_MSG_WARN([Both SYSROOT and --with-sdk-name are set, only SYSROOT will be used])
+      fi
+    fi
+
+    if test $HAVE_SYSTEM_FRAMEWORK_HEADERS -eq 0 -a -z "$SYSROOT"; then
+      # If no system framework headers, then SYSROOT must be set, or we won't build
+      AC_MSG_ERROR([Unable to determine SYSROOT and no headers found in /System/Library/Frameworks. Check Xcode configuration, --with-sysroot or --with-sdk-name arguments.])
+    fi
+
+    # Perform a basic sanity test
+    if test ! -f "$SYSROOT/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h"; then
+      if test -z "$SYSROOT"; then
+        AC_MSG_ERROR([Unable to find required framework headers, provide a path to an SDK via --with-sysroot or --with-sdk-name and be sure Xcode is installed properly])
+      else
+        AC_MSG_ERROR([Invalid SDK or SYSROOT path, dependent framework headers not found])
+      fi
+    fi
+
+    # set SDKROOT too, Xcode tools will pick it up
+    SDKROOT="$SYSROOT"
+    AC_SUBST(SDKROOT)
+  fi
+
+  # Prepend the extra path to the global path
+  BASIC_PREPEND_TO_PATH([PATH],$EXTRA_PATH)
+
+  AC_MSG_CHECKING([for sysroot])
+  AC_MSG_RESULT([$SYSROOT])
+  AC_MSG_CHECKING([for toolchain path])
+  AC_MSG_RESULT([$TOOLCHAIN_PATH])
+  AC_MSG_CHECKING([for extra path])
+  AC_MSG_RESULT([$EXTRA_PATH])
+])
+
+AC_DEFUN_ONCE([BASIC_SETUP_OUTPUT_DIR],
+[
+
+  AC_ARG_WITH(conf-name, [AS_HELP_STRING([--with-conf-name],
+      [use this as the name of the configuration @<:@generated from important configuration options@:>@])],
+      [ CONF_NAME=${with_conf_name} ])
+
+  # Test from where we are running configure, in or outside of src root.
+  AC_MSG_CHECKING([where to store configuration])
+  if test "x$CURDIR" = "x$SRC_ROOT" || test "x$CURDIR" = "x$SRC_ROOT/common" \
+      || test "x$CURDIR" = "x$SRC_ROOT/common/autoconf" \
+      || test "x$CURDIR" = "x$SRC_ROOT/make" ; then
+    # We are running configure from the src root.
+    # Create a default ./build/target-variant-debuglevel output root.
+    if test "x${CONF_NAME}" = x; then
+      AC_MSG_RESULT([in default location])
+      CONF_NAME="${OPENJDK_TARGET_OS}-${OPENJDK_TARGET_CPU}-${JDK_VARIANT}-${JVM_VARIANTS_WITH_AND}-${DEBUG_LEVEL}"
+    else
+      AC_MSG_RESULT([in build directory with custom name])
+    fi
+    OUTPUT_ROOT="$SRC_ROOT/build/${CONF_NAME}"
+    $MKDIR -p "$OUTPUT_ROOT"
+    if test ! -d "$OUTPUT_ROOT"; then
+      AC_MSG_ERROR([Could not create build directory $OUTPUT_ROOT])
+    fi
+  else
+    # We are running configure from outside of the src dir.
+    # Then use the current directory as output dir!
+    # If configuration is situated in normal build directory, just use the build
+    # directory name as configuration name, otherwise use the complete path.
+    if test "x${CONF_NAME}" = x; then
+      CONF_NAME=`$ECHO $CURDIR | $SED -e "s!^${SRC_ROOT}/build/!!"`
+    fi
+    OUTPUT_ROOT="$CURDIR"
+    AC_MSG_RESULT([in current directory])
+
+    # WARNING: This might be a bad thing to do. You need to be sure you want to
+    # have a configuration in this directory. Do some sanity checks!
+
+    if test ! -e "$OUTPUT_ROOT/spec.gmk"; then
+      # If we have a spec.gmk, we have run here before and we are OK. Otherwise, check for
+      # other files
+      files_present=`$LS $OUTPUT_ROOT`
+      # Configure has already touched config.log and confdefs.h in the current dir when this check
+      # is performed.
+      filtered_files=`$ECHO "$files_present" \
+          | $SED -e 's/config.log//g' \
+              -e 's/configure.log//g' \
+              -e 's/confdefs.h//g' \
+              -e 's/ //g' \
+          | $TR -d '\n'`
+      if test "x$filtered_files" != x; then
+        AC_MSG_NOTICE([Current directory is $CURDIR.])
+        AC_MSG_NOTICE([Since this is not the source root, configure will output the configuration here])
+        AC_MSG_NOTICE([(as opposed to creating a configuration in <src_root>/build/<conf-name>).])
+        AC_MSG_NOTICE([However, this directory is not empty. This is not allowed, since it could])
+        AC_MSG_NOTICE([seriously mess up just about everything.])
+        AC_MSG_NOTICE([Try 'cd $SRC_ROOT' and restart configure])
+        AC_MSG_NOTICE([(or create a new empty directory and cd to it).])
+        AC_MSG_ERROR([Will not continue creating configuration in $CURDIR])
+      fi
+    fi
+  fi
+  AC_MSG_CHECKING([what configuration name to use])
+  AC_MSG_RESULT([$CONF_NAME])
+
+  BASIC_FIXUP_PATH(OUTPUT_ROOT)
+
+  CONFIGURESUPPORT_OUTPUTDIR="$OUTPUT_ROOT/configure-support"
+  $MKDIR -p "$CONFIGURESUPPORT_OUTPUTDIR"
+
+  SPEC="$OUTPUT_ROOT/spec.gmk"
+  AC_SUBST(SPEC)
+  AC_SUBST(CONF_NAME)
+  AC_SUBST(OUTPUT_ROOT)
+  AC_SUBST(CONFIGURESUPPORT_OUTPUTDIR)
+
+  # The spec.gmk file contains all variables for the make system.
+  AC_CONFIG_FILES([$OUTPUT_ROOT/spec.gmk:$AUTOCONF_DIR/spec.gmk.in])
+  # The bootcycle-spec.gmk file contains support for boot cycle builds.
+  AC_CONFIG_FILES([$OUTPUT_ROOT/bootcycle-spec.gmk:$AUTOCONF_DIR/bootcycle-spec.gmk.in])
+  # The buildjdk-spec.gmk file contains support for building a buildjdk when cross compiling.
+  AC_CONFIG_FILES([$OUTPUT_ROOT/buildjdk-spec.gmk:$AUTOCONF_DIR/buildjdk-spec.gmk.in])
+  # The compare.sh is used to compare the build output to other builds.
+  AC_CONFIG_FILES([$OUTPUT_ROOT/compare.sh:$AUTOCONF_DIR/compare.sh.in])
+  # The generated Makefile knows where the spec.gmk is and where the source is.
+  # You can run make from the OUTPUT_ROOT, or from the top-level Makefile
+  # which will look for generated configurations
+  AC_CONFIG_FILES([$OUTPUT_ROOT/Makefile:$AUTOCONF_DIR/Makefile.in])
+])
+
+#%%% Simple tools %%%
+
+# Check if we have found a usable version of make
+# $1: the path to a potential make binary (or empty)
+# $2: the description on how we found this
+AC_DEFUN([BASIC_CHECK_MAKE_VERSION],
+[
+  MAKE_CANDIDATE="$1"
+  DESCRIPTION="$2"
+
+  # On Cygwin, we require a newer version of make than on other platforms
+  if test "x$OPENJDK_BUILD_OS_ENV" = "xwindows.cygwin"; then
+    MAKE_VERSION_EXPR="-e 4\."
+    MAKE_REQUIRED_VERSION="4.0"
+   else
+    MAKE_VERSION_EXPR="-e 3\.8[[12]] -e 4\."
+    MAKE_REQUIRED_VERSION="3.81"
+  fi
+
+  if test "x$MAKE_CANDIDATE" != x; then
+    AC_MSG_NOTICE([Testing potential make at $MAKE_CANDIDATE, found using $DESCRIPTION])
+    MAKE_VERSION_STRING=`$MAKE_CANDIDATE --version | $HEAD -n 1`
+    IS_GNU_MAKE=`$ECHO $MAKE_VERSION_STRING | $GREP 'GNU Make'`
+    if test "x$IS_GNU_MAKE" = x; then
+      AC_MSG_NOTICE([Found potential make at $MAKE_CANDIDATE, however, this is not GNU Make. Ignoring.])
+    else
+      IS_MODERN_MAKE=`$ECHO $MAKE_VERSION_STRING | $GREP $MAKE_VERSION_EXPR`
+      if test "x$IS_MODERN_MAKE" = x; then
+        AC_MSG_NOTICE([Found GNU make at $MAKE_CANDIDATE, however this is not version $MAKE_REQUIRED_VERSION or later. (it is: $MAKE_VERSION_STRING). Ignoring.])
+      else
+        if test "x$OPENJDK_BUILD_OS" = "xwindows"; then
+          if test "x$OPENJDK_BUILD_OS_ENV" = "xwindows.cygwin"; then
+            MAKE_EXPECTED_ENV='cygwin'
+          elif test "x$OPENJDK_BUILD_OS_ENV" = "xwindows.msys"; then
+            MAKE_EXPECTED_ENV='msys'
+          else
+            AC_MSG_ERROR([Unknown Windows environment])
+          fi
+          MAKE_BUILT_FOR=`$MAKE_CANDIDATE --version | $GREP -i 'built for'`
+          IS_MAKE_CORRECT_ENV=`$ECHO $MAKE_BUILT_FOR | $GREP $MAKE_EXPECTED_ENV`
+        else
+          # Not relevant for non-Windows
+          IS_MAKE_CORRECT_ENV=true
+        fi
+        if test "x$IS_MAKE_CORRECT_ENV" = x; then
+          AC_MSG_NOTICE([Found GNU make version $MAKE_VERSION_STRING at $MAKE_CANDIDATE, but it is not for $MAKE_EXPECTED_ENV (it says: $MAKE_BUILT_FOR). Ignoring.])
+        else
+          FOUND_MAKE=$MAKE_CANDIDATE
+          BASIC_FIXUP_EXECUTABLE(FOUND_MAKE)
+        fi
+      fi
+    fi
+  fi
+])
+
+AC_DEFUN([BASIC_CHECK_MAKE_OUTPUT_SYNC],
+[
+  # Check if make supports the output sync option and if so, setup using it.
+  AC_MSG_CHECKING([if make --output-sync is supported])
+  if $MAKE --version -O > /dev/null 2>&1; then
+    OUTPUT_SYNC_SUPPORTED=true
+    AC_MSG_RESULT([yes])
+    AC_MSG_CHECKING([for output-sync value])
+    AC_ARG_WITH([output-sync], [AS_HELP_STRING([--with-output-sync],
+      [set make output sync type if supported by make. @<:@recurse@:>@])],
+      [OUTPUT_SYNC=$with_output_sync])
+    if test "x$OUTPUT_SYNC" = "x"; then
+      OUTPUT_SYNC=none
+    fi
+    AC_MSG_RESULT([$OUTPUT_SYNC])
+    if ! $MAKE --version -O$OUTPUT_SYNC > /dev/null 2>&1; then
+      AC_MSG_ERROR([Make did not the support the value $OUTPUT_SYNC as output sync type.])
+    fi
+  else
+    OUTPUT_SYNC_SUPPORTED=false
+    AC_MSG_RESULT([no])
+  fi
+  AC_SUBST(OUTPUT_SYNC_SUPPORTED)
+  AC_SUBST(OUTPUT_SYNC)
+])
+
+# Goes looking for a usable version of GNU make.
+AC_DEFUN([BASIC_CHECK_GNU_MAKE],
+[
+  BASIC_SETUP_TOOL([MAKE],
+  [
+    # Try our hardest to locate a correct version of GNU make
+    AC_PATH_PROGS(CHECK_GMAKE, gmake)
+    BASIC_CHECK_MAKE_VERSION("$CHECK_GMAKE", [gmake in PATH])
+
+    if test "x$FOUND_MAKE" = x; then
+      AC_PATH_PROGS(CHECK_MAKE, make)
+      BASIC_CHECK_MAKE_VERSION("$CHECK_MAKE", [make in PATH])
+    fi
+
+    if test "x$FOUND_MAKE" = x; then
+      if test "x$TOOLCHAIN_PATH" != x; then
+        # We have a toolchain path, check that as well before giving up.
+        OLD_PATH=$PATH
+        PATH=$TOOLCHAIN_PATH:$PATH
+        AC_PATH_PROGS(CHECK_TOOLSDIR_GMAKE, gmake)
+        BASIC_CHECK_MAKE_VERSION("$CHECK_TOOLSDIR_GMAKE", [gmake in tools-dir])
+        if test "x$FOUND_MAKE" = x; then
+          AC_PATH_PROGS(CHECK_TOOLSDIR_MAKE, make)
+          BASIC_CHECK_MAKE_VERSION("$CHECK_TOOLSDIR_MAKE", [make in tools-dir])
+        fi
+        PATH=$OLD_PATH
+      fi
+    fi
+
+    if test "x$FOUND_MAKE" = x; then
+      AC_MSG_ERROR([Cannot find GNU make $MAKE_REQUIRED_VERSION or newer! Please put it in the path, or add e.g. MAKE=/opt/gmake3.81/make as argument to configure.])
+    fi
+  ],[
+    # If MAKE was set by user, verify the version
+    BASIC_CHECK_MAKE_VERSION("$MAKE", [user supplied MAKE=$MAKE])
+    if test "x$FOUND_MAKE" = x; then
+      AC_MSG_ERROR([The specified make (by MAKE=$MAKE) is not GNU make $MAKE_REQUIRED_VERSION or newer.])
+    fi
+  ])
+
+  MAKE=$FOUND_MAKE
+  AC_SUBST(MAKE)
+  AC_MSG_NOTICE([Using GNU make at $FOUND_MAKE (version: $MAKE_VERSION_STRING)])
+
+  BASIC_CHECK_MAKE_OUTPUT_SYNC
+])
+
+AC_DEFUN([BASIC_CHECK_FIND_DELETE],
+[
+  # Test if find supports -delete
+  AC_MSG_CHECKING([if find supports -delete])
+  FIND_DELETE="-delete"
+
+  DELETEDIR=`$MKTEMP -d tmp.XXXXXXXXXX` || (echo Could not create temporary directory!; exit $?)
+
+  echo Hejsan > $DELETEDIR/TestIfFindSupportsDelete
+
+  TEST_DELETE=`$FIND "$DELETEDIR" -name TestIfFindSupportsDelete $FIND_DELETE 2>&1`
+  if test -f $DELETEDIR/TestIfFindSupportsDelete; then
+    # No, it does not.
+    $RM $DELETEDIR/TestIfFindSupportsDelete
+    if test "x$OPENJDK_TARGET_OS" = "xaix"; then
+      # AIX 'find' is buggy if called with '-exec {} \+' and an empty file list
+      FIND_DELETE="-print | $XARGS $RM"
+    else
+      FIND_DELETE="-exec $RM \{\} \+"
+    fi
+    AC_MSG_RESULT([no])
+  else
+    AC_MSG_RESULT([yes])
+  fi
+  $RMDIR $DELETEDIR
+  AC_SUBST(FIND_DELETE)
+])
+
+AC_DEFUN([BASIC_CHECK_TAR],
+[
+  # Test which kind of tar was found
+  if test "x$($TAR --version | $GREP "GNU tar")" != "x"; then
+    TAR_TYPE="gnu"
+  elif test "x$($TAR --version | $GREP "bsdtar")" != "x"; then
+    TAR_TYPE="bsd"
+  elif test "x$($TAR -v | $GREP "bsdtar")" != "x"; then
+    TAR_TYPE="bsd"
+  elif test "x$OPENJDK_BUILD_OS" = "xsolaris"; then
+    TAR_TYPE="solaris"
+  fi
+  AC_MSG_CHECKING([what type of tar was found])
+  AC_MSG_RESULT([$TAR_TYPE])
+
+  TAR_CREATE_FILE_PARAM=""
+
+  if test "x$TAR_TYPE" = "xgnu"; then
+    TAR_INCLUDE_PARAM="T"
+    TAR_SUPPORTS_TRANSFORM="true"
+    if test "x$OPENJDK_TARGET_OS" = "xsolaris"; then
+      # When using gnu tar for Solaris targets, need to use compatibility mode
+      TAR_CREATE_EXTRA_PARAM="--format=ustar"
+    fi
+  else
+    TAR_INCLUDE_PARAM="I"
+    TAR_SUPPORTS_TRANSFORM="false"
+  fi
+  AC_SUBST(TAR_TYPE)
+  AC_SUBST(TAR_CREATE_EXTRA_PARAM)
+  AC_SUBST(TAR_INCLUDE_PARAM)
+  AC_SUBST(TAR_SUPPORTS_TRANSFORM)
+])
+
+AC_DEFUN([BASIC_CHECK_GREP],
+[
+  # Test that grep supports -Fx with a list of pattern which includes null pattern.
+  # This is a problem for the grep resident on AIX.
+  AC_MSG_CHECKING([that grep ($GREP) -Fx handles empty lines in the pattern list correctly])
+  # Multiple subsequent spaces..
+  STACK_SPACES='aaa   bbb   ccc'
+  # ..converted to subsequent newlines, causes STACK_LIST to be a list with some empty
+  # patterns in it.
+  STACK_LIST=${STACK_SPACES// /$'\n'}
+  NEEDLE_SPACES='ccc bbb aaa'
+  NEEDLE_LIST=${NEEDLE_SPACES// /$'\n'}
+  RESULT="$($GREP -Fvx "$STACK_LIST" <<< "$NEEDLE_LIST")"
+  if test "x$RESULT" == "x"; then
+    AC_MSG_RESULT([yes])
+  else
+    if test "x$OPENJDK_TARGET_OS" = "xaix"; then
+      ADDINFO="Please make sure you use GNU grep, usually found at /opt/freeware/bin."
+    fi
+    AC_MSG_ERROR([grep does not handle -Fx correctly. ${ADDINFO}])
+  fi
+])
+
+AC_DEFUN_ONCE([BASIC_SETUP_COMPLEX_TOOLS],
+[
+  BASIC_CHECK_GNU_MAKE
+
+  BASIC_CHECK_FIND_DELETE
+  BASIC_CHECK_TAR
+  BASIC_CHECK_GREP
+
+  # These tools might not be installed by default,
+  # need hint on how to install them.
+  BASIC_REQUIRE_PROGS(UNZIP, unzip)
+  # Since zip uses "ZIP" as a environment variable for passing options, we need
+  # to name our variable differently, hence ZIPEXE.
+  BASIC_REQUIRE_PROGS(ZIPEXE, zip)
+
+  # Non-required basic tools
+
+  BASIC_PATH_PROGS(LDD, ldd)
+  if test "x$LDD" = "x"; then
+    # List shared lib dependencies is used for
+    # debug output and checking for forbidden dependencies.
+    # We can build without it.
+    LDD="true"
+  fi
+  BASIC_PATH_PROGS(OTOOL, otool)
+  if test "x$OTOOL" = "x"; then
+    OTOOL="true"
+  fi
+  BASIC_PATH_PROGS(READELF, [greadelf readelf])
+  BASIC_PATH_PROGS(DOT, dot)
+  BASIC_PATH_PROGS(HG, hg)
+  BASIC_PATH_PROGS(STAT, stat)
+  BASIC_PATH_PROGS(TIME, time)
+  BASIC_PATH_PROGS(FLOCK, flock)
+  # Dtrace is usually found in /usr/sbin on Solaris, but that directory may not
+  # be in the user path.
+  BASIC_PATH_PROGS(DTRACE, dtrace, $PATH:/usr/sbin)
+  BASIC_PATH_PROGS(PATCH, [gpatch patch])
+  # Check if it's GNU time
+  IS_GNU_TIME=`$TIME --version 2>&1 | $GREP 'GNU time'`
+  if test "x$IS_GNU_TIME" != x; then
+    IS_GNU_TIME=yes
+  else
+    IS_GNU_TIME=no
+  fi
+  AC_SUBST(IS_GNU_TIME)
+
+  if test "x$OPENJDK_TARGET_OS" = "xmacosx"; then
+    BASIC_REQUIRE_PROGS(DSYMUTIL, dsymutil)
+    BASIC_REQUIRE_PROGS(XATTR, xattr)
+    BASIC_PATH_PROGS(CODESIGN, codesign)
+    if test "x$CODESIGN" != "x"; then
+      # Verify that the openjdk_codesign certificate is present
+      AC_MSG_CHECKING([if openjdk_codesign certificate is present])
+      $RM codesign-testfile
+      $TOUCH codesign-testfile
+      $CODESIGN -s openjdk_codesign codesign-testfile 2>&AS_MESSAGE_LOG_FD >&AS_MESSAGE_LOG_FD || CODESIGN=
+      $RM codesign-testfile
+      if test "x$CODESIGN" = x; then
+        AC_MSG_RESULT([no])
+      else
+        AC_MSG_RESULT([yes])
+      fi
+    fi
+    BASIC_REQUIRE_PROGS(SETFILE, SetFile)
+  fi
+])
+
+# Check if build directory is on local disk. If not possible to determine,
+# we prefer to claim it's local.
+# Argument 1: directory to test
+# Argument 2: what to do if it is on local disk
+# Argument 3: what to do otherwise (remote disk or failure)
+AC_DEFUN([BASIC_CHECK_DIR_ON_LOCAL_DISK],
+[
+  # df -l lists only local disks; if the given directory is not found then
+  # a non-zero exit code is given
+  if test "x$DF" = x; then
+    if test "x$OPENJDK_BUILD_OS_ENV" = "xwindows.msys"; then
+      # msys does not have df; use Windows "net use" instead.
+      IS_NETWORK_DISK=`net use | grep \`pwd -W | cut -d ":" -f 1 | tr a-z A-Z\`:`
+      if test "x$IS_NETWORK_DISK" = x; then
+        $2
+      else
+        $3
+      fi
+    else
+      # No df here, say it's local
+      $2
+    fi
+  else
+    if $DF -l $1 > /dev/null 2>&1; then
+      $2
+    else
+      $3
+    fi
+  fi
+])
+
+# Check that source files have basic read permissions set. This might
+# not be the case in cygwin in certain conditions.
+AC_DEFUN_ONCE([BASIC_CHECK_SRC_PERMS],
+[
+  if test "x$OPENJDK_BUILD_OS_ENV" = "xwindows.cygwin"; then
+    file_to_test="$SRC_ROOT/LICENSE"
+    if test `$STAT -c '%a' "$file_to_test"` -lt 400; then
+      AC_MSG_ERROR([Bad file permissions on src files. This is usually caused by cloning the repositories with a non cygwin hg in a directory not created in cygwin.])
+    fi
+  fi
+])
+
+AC_DEFUN_ONCE([BASIC_TEST_USABILITY_ISSUES],
+[
+  # Did user specify any unknown variables?
+  BASIC_CHECK_LEFTOVER_OVERRIDDEN
+
+  AC_MSG_CHECKING([if build directory is on local disk])
+  BASIC_CHECK_DIR_ON_LOCAL_DISK($OUTPUT_ROOT,
+      [OUTPUT_DIR_IS_LOCAL="yes"],
+      [OUTPUT_DIR_IS_LOCAL="no"])
+  AC_MSG_RESULT($OUTPUT_DIR_IS_LOCAL)
+
+  BASIC_CHECK_SRC_PERMS
+
+  # Check if the user has any old-style ALT_ variables set.
+  FOUND_ALT_VARIABLES=`env | grep ^ALT_`
+
+  # Before generating output files, test if they exist. If they do, this is a reconfigure.
+  # Since we can't properly handle the dependencies for this, warn the user about the situation
+  if test -e $OUTPUT_ROOT/spec.gmk; then
+    IS_RECONFIGURE=yes
+  else
+    IS_RECONFIGURE=no
+  fi
+])
+
+# Check for support for specific options in bash
+AC_DEFUN_ONCE([BASIC_CHECK_BASH_OPTIONS],
+[
+  # Check bash version
+  # Extra [ ] to stop m4 mangling
+  [ BASH_VER=`$BASH --version | $SED -n  -e 's/^.*bash.*ersion *\([0-9.]*\).*$/\1/ p'` ]
+  AC_MSG_CHECKING([bash version])
+  AC_MSG_RESULT([$BASH_VER])
+
+  BASH_MAJOR=`$ECHO $BASH_VER | $CUT -d . -f 1`
+  BASH_MINOR=`$ECHO $BASH_VER | $CUT -d . -f 2`
+  if test $BASH_MAJOR -lt 3 || (test $BASH_MAJOR -eq 3 && test $BASH_MINOR -lt 2); then
+    AC_MSG_ERROR([bash version 3.2 or better is required])
+  fi
+
+  # Test if bash supports pipefail.
+  AC_MSG_CHECKING([if bash supports pipefail])
+  if ${BASH} -c 'set -o pipefail'; then
+    BASH_ARGS="$BASH_ARGS -o pipefail"
+    AC_MSG_RESULT([yes])
+  else
+    AC_MSG_RESULT([no])
+  fi
+
+  AC_MSG_CHECKING([if bash supports errexit (-e)])
+  if ${BASH} -e -c 'true'; then
+    BASH_ARGS="$BASH_ARGS -e"
+    AC_MSG_RESULT([yes])
+  else
+    AC_MSG_RESULT([no])
+  fi
+
+  AC_SUBST(BASH_ARGS)
+])
+
+################################################################################
+#
+# Default make target
+#
+AC_DEFUN_ONCE([BASIC_SETUP_DEFAULT_MAKE_TARGET],
+[
+  AC_ARG_WITH(default-make-target, [AS_HELP_STRING([--with-default-make-target],
+      [set the default make target @<:@exploded-image@:>@])])
+  if test "x$with_default_make_target" = "x" \
+      || test "x$with_default_make_target" = "xyes"; then
+    DEFAULT_MAKE_TARGET="exploded-image"
+  elif test "x$with_default_make_target" = "xno"; then
+    AC_MSG_ERROR([--without-default-make-target is not a valid option])
+  else
+    DEFAULT_MAKE_TARGET="$with_default_make_target"
+  fi
+
+  AC_SUBST(DEFAULT_MAKE_TARGET)
+])
+
+# Code to run after AC_OUTPUT
+AC_DEFUN_ONCE([BASIC_POST_CONFIG_OUTPUT],
+[
+  # Try to move config.log (generated by autoconf) to the configure-support directory.
+  if test -e ./config.log; then
+    $MV -f ./config.log "$CONFIGURESUPPORT_OUTPUTDIR/config.log" 2> /dev/null
+  fi
+
+  # Rotate our log file (configure.log)
+  if test -e "$OUTPUT_ROOT/configure.log.old"; then
+    $RM -f "$OUTPUT_ROOT/configure.log.old"
+  fi
+  if test -e "$OUTPUT_ROOT/configure.log"; then
+    $MV -f "$OUTPUT_ROOT/configure.log" "$OUTPUT_ROOT/configure.log.old" 2> /dev/null
+  fi
+
+  # Move configure.log from current directory to the build output root
+  if test -e ./configure.log; then
+    $MV -f ./configure.log "$OUTPUT_ROOT/configure.log" 2> /dev/null
+  fi
+
+  # Make the compare script executable
+  $CHMOD +x $OUTPUT_ROOT/compare.sh
+])