#

# Copyright (c) 2015, 2019, 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.

#

###############################################################################

#

# Setup version numbers

#

# Verify that a given string represents a valid version number, and assign it

# to a variable.

# Argument 1: the variable to assign to

# Argument 2: the value given by the user

AC_DEFUN([JDKVER_CHECK_AND_SET_NUMBER],

[

  # Additional [] needed to keep m4 from mangling shell constructs.

  if [ ! [[ "$2" =~ ^0*([1-9][0-9]*)|(0)$ ]] ] ; then

    AC_MSG_ERROR(["$2" is not a valid numerical value for $1])

  fi

  # Extract the version number without leading zeros.

  cleaned_value=${BASH_REMATCH[[1]]}

  if test "x$cleaned_value" = x; then

    # Special case for zero

    cleaned_value=${BASH_REMATCH[[2]]}

  fi

  if test $cleaned_value -gt 255; then

    AC_MSG_ERROR([$1 is given as $2. This is greater than 255 which is not allowed.])

  fi

  if test "x$cleaned_value" != "x$2"; then

    AC_MSG_WARN([Value for $1 has been sanitized from '$2' to '$cleaned_value'])

  fi

  $1=$cleaned_value

])

AC_DEFUN_ONCE([JDKVER_SETUP_JDK_VERSION_NUMBERS],

[

  # Source the version numbers file

  . $AUTOCONF_DIR/version-numbers

  # Some non-version number information is set in that file

  AC_SUBST(LAUNCHER_NAME)

  AC_SUBST(PRODUCT_NAME)

  AC_SUBST(PRODUCT_SUFFIX)

  AC_SUBST(JDK_RC_PLATFORM_NAME)

  AC_SUBST(HOTSPOT_VM_DISTRO)

  # Set the MACOSX Bundle Name base

  AC_ARG_WITH(macosx-bundle-name-base, [AS_HELP_STRING([--with-macosx-bundle-name-base],

      [Set the MacOSX Bundle Name base. This is the base name for calculating MacOSX Bundle Names.

      @<:@not specified@:>@])])

  if test "x$with_macosx_bundle_name_base" = xyes; then

    AC_MSG_ERROR([--with-macosx-bundle-name-base must have a value])

  elif [ ! [[ $with_macosx_bundle_name_base =~ ^[[:print:]]*$ ]] ]; then

    AC_MSG_ERROR([--with-macosx-bundle-name-base contains non-printing characters: $with_macosx_bundle_name_base])

  elif test "x$with_macosx_bundle_name_base" != x; then

    # Set MACOSX_BUNDLE_NAME_BASE to the configured value.

    MACOSX_BUNDLE_NAME_BASE="$with_macosx_bundle_name_base"

  fi

  AC_SUBST(MACOSX_BUNDLE_NAME_BASE)

  # Set the MACOSX Bundle ID base

  AC_ARG_WITH(macosx-bundle-id-base, [AS_HELP_STRING([--with-macosx-bundle-id-base],

      [Set the MacOSX Bundle ID base. This is the base ID for calculating MacOSX Bundle IDs.

      @<:@not specified@:>@])])

  if test "x$with_macosx_bundle_id_base" = xyes; then

    AC_MSG_ERROR([--with-macosx-bundle-id-base must have a value])

  elif [ ! [[ $with_macosx_bundle_id_base =~ ^[[:print:]]*$ ]] ]; then

    AC_MSG_ERROR([--with-macosx-bundle-id-base contains non-printing characters: $with_macosx_bundle_id_base])

  elif test "x$with_macosx_bundle_id_base" != x; then

    # Set MACOSX_BUNDLE_ID_BASE to the configured value.

    MACOSX_BUNDLE_ID_BASE="$with_macosx_bundle_id_base"

  fi

  AC_SUBST(MACOSX_BUNDLE_ID_BASE)

  # Set the JDK RC name

  AC_ARG_WITH(jdk-rc-name, [AS_HELP_STRING([--with-jdk-rc-name],

      [Set JDK RC name. This is used for FileDescription and ProductName properties

       of MS Windows binaries. @<:@not specified@:>@])])

  if test "x$with_jdk_rc_name" = xyes; then

    AC_MSG_ERROR([--with-jdk-rc-name must have a value])

  elif [ ! [[ $with_jdk_rc_name =~ ^[[:print:]]*$ ]] ]; then

    AC_MSG_ERROR([--with-jdk-rc-name contains non-printing characters: $with_jdk_rc_name])

  elif test "x$with_jdk_rc_name" != x; then

    # Set JDK_RC_NAME to a custom value if '--with-jdk-rc-name' was used and is not empty.

    JDK_RC_NAME="$with_jdk_rc_name"

  else

    # Otherwise calculate from "version-numbers" included above.

    JDK_RC_NAME="$PRODUCT_NAME $JDK_RC_PLATFORM_NAME"

  fi

  AC_SUBST(JDK_RC_NAME)

  # The vendor name, if any

  AC_ARG_WITH(vendor-name, [AS_HELP_STRING([--with-vendor-name],

      [Set vendor name. Among others, used to set the 'java.vendor'

       and 'java.vm.vendor' system properties. @<:@not specified@:>@])])

  if test "x$with_vendor_name" = xyes; then

    AC_MSG_ERROR([--with-vendor-name must have a value])

  elif [ ! [[ $with_vendor_name =~ ^[[:print:]]*$ ]] ]; then

    AC_MSG_ERROR([--with-vendor-name contains non-printing characters: $with_vendor_name])

  elif test "x$with_vendor_name" != x; then

    # Only set COMPANY_NAME if '--with-vendor-name' was used and is not empty.

    # Otherwise we will use the value from "version-numbers" included above.

    COMPANY_NAME="$with_vendor_name"

  fi

  AC_SUBST(COMPANY_NAME)

  # The vendor URL, if any

  AC_ARG_WITH(vendor-url, [AS_HELP_STRING([--with-vendor-url],

      [Set the 'java.vendor.url' system property @<:@not specified@:>@])])

  if test "x$with_vendor_url" = xyes; then

    AC_MSG_ERROR([--with-vendor-url must have a value])

  elif [ ! [[ $with_vendor_url =~ ^[[:print:]]*$ ]] ]; then

    AC_MSG_ERROR([--with-vendor-url contains non-printing characters: $with_vendor_url])

  elif test "x$with_vendor_url" != x; then

    # Only set VENDOR_URL if '--with-vendor-url' was used and is not empty.

    # Otherwise we will use the value from "version-numbers" included above.

    VENDOR_URL="$with_vendor_url"

  fi

  AC_SUBST(VENDOR_URL)

  # The vendor bug URL, if any

  AC_ARG_WITH(vendor-bug-url, [AS_HELP_STRING([--with-vendor-bug-url],

      [Set the 'java.vendor.url.bug' system property @<:@not specified@:>@])])

  if test "x$with_vendor_bug_url" = xyes; then

    AC_MSG_ERROR([--with-vendor-bug-url must have a value])

  elif [ ! [[ $with_vendor_bug_url =~ ^[[:print:]]*$ ]] ]; then

    AC_MSG_ERROR([--with-vendor-bug-url contains non-printing characters: $with_vendor_bug_url])

  elif test "x$with_vendor_bug_url" != x; then

    # Only set VENDOR_URL_BUG if '--with-vendor-bug-url' was used and is not empty.

    # Otherwise we will use the value from "version-numbers" included above.

    VENDOR_URL_BUG="$with_vendor_bug_url"

  fi

  AC_SUBST(VENDOR_URL_BUG)

  # The vendor VM bug URL, if any

  AC_ARG_WITH(vendor-vm-bug-url, [AS_HELP_STRING([--with-vendor-vm-bug-url],

      [Sets the bug URL which will be displayed when the VM crashes @<:@not specified@:>@])])

  if test "x$with_vendor_vm_bug_url" = xyes; then

    AC_MSG_ERROR([--with-vendor-vm-bug-url must have a value])

  elif [ ! [[ $with_vendor_vm_bug_url =~ ^[[:print:]]*$ ]] ]; then

    AC_MSG_ERROR([--with-vendor-vm-bug-url contains non-printing characters: $with_vendor_vm_bug_url])

    VENDOR_URL_VM_BUG="$with_vendor_vm_bug_url"

  fi

  AC_SUBST(VENDOR_URL_VM_BUG)

  # Override version from arguments

  # If --with-version-string is set, process it first. It is possible to

  # override parts with more specific flags, since these are processed later.

  AC_ARG_WITH(version-string, [AS_HELP_STRING([--with-version-string],

      [Set version string @<:@calculated@:>@])])

  if test "x$with_version_string" = xyes; then

    AC_MSG_ERROR([--with-version-string must have a value])

  elif test "x$with_version_string" != x; then

    # Additional [] needed to keep m4 from mangling shell constructs.

    if [ [[ $with_version_string =~ ^([0-9]+)(\.([0-9]+))?(\.([0-9]+))?(\.([0-9]+))?(\.([0-9]+))?(\.([0-9]+))?(\.([0-9]+))?(-([a-zA-Z]+))?((\+)([0-9]+)?(-([-a-zA-Z0-9.]+))?)?$ ]] ]; then

      VERSION_FEATURE=${BASH_REMATCH[[1]]}

      VERSION_INTERIM=${BASH_REMATCH[[3]]}

      VERSION_UPDATE=${BASH_REMATCH[[5]]}

      VERSION_PATCH=${BASH_REMATCH[[7]]}

      VERSION_EXTRA1=${BASH_REMATCH[[9]]}

      VERSION_EXTRA2=${BASH_REMATCH[[11]]}

      VERSION_EXTRA3=${BASH_REMATCH[[13]]}

      VERSION_PRE=${BASH_REMATCH[[15]]}

      version_plus_separator=${BASH_REMATCH[[17]]}

      VERSION_BUILD=${BASH_REMATCH[[18]]}

      VERSION_OPT=${BASH_REMATCH[[20]]}

      # Unspecified numerical fields are interpreted as 0.

      if test "x$VERSION_INTERIM" = x; then

        VERSION_INTERIM=0

      fi

      if test "x$VERSION_UPDATE" = x; then

        VERSION_UPDATE=0

      fi

      if test "x$VERSION_PATCH" = x; then

        VERSION_PATCH=0

      fi

      if test "x$VERSION_EXTRA1" = x; then

        VERSION_EXTRA1=0

      fi

      if test "x$VERSION_EXTRA2" = x; then

        VERSION_EXTRA2=0

      fi

      if test "x$VERSION_EXTRA3" = x; then

        VERSION_EXTRA3=0

      fi

      if test "x$version_plus_separator" != x \

          && test "x$VERSION_BUILD$VERSION_OPT" = x; then

        AC_MSG_ERROR([Version string contains + but both 'BUILD' and 'OPT' are missing])

      fi

      # Stop the version part process from setting default values.

      # We still allow them to explicitly override though.

      NO_DEFAULT_VERSION_PARTS=true

    else

      AC_MSG_ERROR([--with-version-string fails to parse as a valid version string: $with_version_string])

    fi

  fi

  AC_ARG_WITH(version-pre, [AS_HELP_STRING([--with-version-pre],

      [Set the base part of the version 'PRE' field (pre-release identifier) @<:@'internal'@:>@])],

      [with_version_pre_present=true], [with_version_pre_present=false])

  if test "x$with_version_pre_present" = xtrue; then

    if test "x$with_version_pre" = xyes; then

      AC_MSG_ERROR([--with-version-pre must have a value])

    elif test "x$with_version_pre" = xno; then

      # Interpret --without-* as empty string instead of the literal "no"

      VERSION_PRE=

    else

      # Only [a-zA-Z] is allowed in the VERSION_PRE. Outer [ ] to quote m4.

      [ VERSION_PRE=`$ECHO "$with_version_pre" | $TR -c -d '[a-z][A-Z]'` ]

      if test "x$VERSION_PRE" != "x$with_version_pre"; then

        AC_MSG_WARN([--with-version-pre value has been sanitized from '$with_version_pre' to '$VERSION_PRE'])

      fi

    fi

  else

    if test "x$NO_DEFAULT_VERSION_PARTS" != xtrue; then

      # Default is to use "internal" as pre

      VERSION_PRE="internal"

    fi

  fi

  AC_ARG_WITH(version-opt, [AS_HELP_STRING([--with-version-opt],

      [Set version 'OPT' field (build metadata) @<:@<timestamp>.<user>.<dirname>@:>@])],

      [with_version_opt_present=true], [with_version_opt_present=false])

  if test "x$with_version_opt_present" = xtrue; then

    if test "x$with_version_opt" = xyes; then

      AC_MSG_ERROR([--with-version-opt must have a value])

    elif test "x$with_version_opt" = xno; then

      # Interpret --without-* as empty string instead of the literal "no"

      VERSION_OPT=

    else

      # Only [-.a-zA-Z0-9] is allowed in the VERSION_OPT. Outer [ ] to quote m4.

      [ VERSION_OPT=`$ECHO "$with_version_opt" | $TR -c -d '[a-z][A-Z][0-9].-'` ]

      if test "x$VERSION_OPT" != "x$with_version_opt"; then

        AC_MSG_WARN([--with-version-opt value has been sanitized from '$with_version_opt' to '$VERSION_OPT'])

      fi

    fi

  else

    if test "x$NO_DEFAULT_VERSION_PARTS" != xtrue; then

      # Default is to calculate a string like this 'adhoc.<username>.<base dir name>'

      # Outer [ ] to quote m4.

      [ basedirname=`$BASENAME "$TOPDIR" | $TR -d -c '[a-z][A-Z][0-9].-'` ]

      VERSION_OPT="adhoc.$USERNAME.$basedirname"

    fi

  fi

  AC_ARG_WITH(version-build, [AS_HELP_STRING([--with-version-build],

      [Set version 'BUILD' field (build number) @<:@not specified@:>@])],

      [with_version_build_present=true], [with_version_build_present=false])

  if test "x$with_version_build_present" = xtrue; then

    if test "x$with_version_build" = xyes; then

      AC_MSG_ERROR([--with-version-build must have a value])

    elif test "x$with_version_build" = xno; then

      # Interpret --without-* as empty string instead of the literal "no"

      VERSION_BUILD=

    elif test "x$with_version_build" = x; then

      VERSION_BUILD=

    else

      JDKVER_CHECK_AND_SET_NUMBER(VERSION_BUILD, $with_version_build)

    fi

  else

    if test "x$NO_DEFAULT_VERSION_PARTS" != xtrue; then

      # Default is to not have a build number.

      VERSION_BUILD=""

      # FIXME: Until all code can cope with an empty VERSION_BUILD, set it to 0.

      VERSION_BUILD=0

    fi

  fi

  AC_ARG_WITH(version-feature, [AS_HELP_STRING([--with-version-feature],

      [Set version 'FEATURE' field (first number) @<:@current source value@:>@])],

      [with_version_feature_present=true], [with_version_feature_present=false])

  if test "x$with_version_feature_present" = xtrue; then

    if test "x$with_version_feature" = xyes; then

      AC_MSG_ERROR([--with-version-feature must have a value])

    else

      JDKVER_CHECK_AND_SET_NUMBER(VERSION_FEATURE, $with_version_feature)

    fi

  else

    if test "x$NO_DEFAULT_VERSION_PARTS" != xtrue; then

      # Default is to get value from version-numbers

      VERSION_FEATURE="$DEFAULT_VERSION_FEATURE"

    fi

  fi

  AC_ARG_WITH(version-interim, [AS_HELP_STRING([--with-version-interim],

      [Set version 'INTERIM' field (second number) @<:@current source value@:>@])],

      [with_version_interim_present=true], [with_version_interim_present=false])

  if test "x$with_version_interim_present" = xtrue; then

    if test "x$with_version_interim" = xyes; then

      AC_MSG_ERROR([--with-version-interim must have a value])

    elif test "x$with_version_interim" = xno; then

      # Interpret --without-* as empty string (i.e. 0) instead of the literal "no"

      VERSION_INTERIM=0

    elif test "x$with_version_interim" = x; then

      VERSION_INTERIM=0

    else

      JDKVER_CHECK_AND_SET_NUMBER(VERSION_INTERIM, $with_version_interim)

    fi

  else

    if test "x$NO_DEFAULT_VERSION_PARTS" != xtrue; then

      # Default is 0, if unspecified

      VERSION_INTERIM=$DEFAULT_VERSION_INTERIM

    fi

  fi

  AC_ARG_WITH(version-update, [AS_HELP_STRING([--with-version-update],

      [Set version 'UPDATE' field (third number) @<:@current source value@:>@])],

      [with_version_update_present=true], [with_version_update_present=false])

  if test "x$with_version_update_present" = xtrue; then

    if test "x$with_version_update" = xyes; then

      AC_MSG_ERROR([--with-version-update must have a value])

    elif test "x$with_version_update" = xno; then

      # Interpret --without-* as empty string (i.e. 0) instead of the literal "no"

      VERSION_UPDATE=0

    elif test "x$with_version_update" = x; then

      VERSION_UPDATE=0

    else

      JDKVER_CHECK_AND_SET_NUMBER(VERSION_UPDATE, $with_version_update)

    fi

  else

    if test "x$NO_DEFAULT_VERSION_PARTS" != xtrue; then

      # Default is 0, if unspecified

      VERSION_UPDATE=$DEFAULT_VERSION_UPDATE

    fi

  fi

  AC_ARG_WITH(version-patch, [AS_HELP_STRING([--with-version-patch],

      [Set version 'PATCH' field (fourth number) @<:@not specified@:>@])],

      [with_version_patch_present=true], [with_version_patch_present=false])

  if test "x$with_version_patch_present" = xtrue; then

    if test "x$with_version_patch" = xyes; then

      AC_MSG_ERROR([--with-version-patch must have a value])

    elif test "x$with_version_patch" = xno; then

      # Interpret --without-* as empty string (i.e. 0) instead of the literal "no"

      VERSION_PATCH=0

    elif test "x$with_version_patch" = x; then

      VERSION_PATCH=0

    else

      JDKVER_CHECK_AND_SET_NUMBER(VERSION_PATCH, $with_version_patch)

    fi

  else

    if test "x$NO_DEFAULT_VERSION_PARTS" != xtrue; then

      # Default is 0, if unspecified

      VERSION_PATCH=$DEFAULT_VERSION_PATCH

    fi

  fi

  # The 1st version extra number, if any

  AC_ARG_WITH(version-extra1, [AS_HELP_STRING([--with-version-extra1],

      [Set 1st version extra number @<:@not specified@:>@])],

      [with_version_extra1_present=true], [with_version_extra1_present=false])

  if test "x$with_version_extra1_present" = xtrue; then

    if test "x$with_version_extra1" = xyes; then

      AC_MSG_ERROR([--with-version-extra1 must have a value])

    elif test "x$with_version_extra1" = xno; then

      # Interpret --without-* as empty string (i.e. 0) instead of the literal "no"

      VERSION_EXTRA1=0

    elif test "x$with_version_extra1" = x; then

      VERSION_EXTRA1=0

    else

      JDKVER_CHECK_AND_SET_NUMBER(VERSION_EXTRA1, $with_version_extra1)

    fi

  else

    if test "x$NO_DEFAULT_VERSION_PARTS" != xtrue; then

      VERSION_EXTRA1=$DEFAULT_VERSION_EXTRA1

    fi

  fi

  # The 2nd version extra number, if any

  AC_ARG_WITH(version-extra2, [AS_HELP_STRING([--with-version-extra2],

      [Set 2nd version extra number @<:@not specified@:>@])],

      [with_version_extra2_present=true], [with_version_extra2_present=false])

  if test "x$with_version_extra2_present" = xtrue; then

    if test "x$with_version_extra2" = xyes; then

      AC_MSG_ERROR([--with-version-extra2 must have a value])

    elif test "x$with_version_extra2" = xno; then

      # Interpret --without-* as empty string (i.e. 0) instead of the literal "no"

      VERSION_EXTRA2=0

    elif test "x$with_version_extra2" = x; then

      VERSION_EXTRA2=0

    else

      JDKVER_CHECK_AND_SET_NUMBER(VERSION_EXTRA2, $with_version_extra2)

    fi

  else

    if test "x$NO_DEFAULT_VERSION_PARTS" != xtrue; then

      VERSION_EXTRA2=$DEFAULT_VERSION_EXTRA2

    fi

  fi

  # The 3rd version extra number, if any

  AC_ARG_WITH(version-extra3, [AS_HELP_STRING([--with-version-extra3],

      [Set 3rd version extra number @<:@not specified@:>@])],

      [with_version_extra3_present=true], [with_version_extra3_present=false])

  if test "x$with_version_extra3_present" = xtrue; then

    if test "x$with_version_extra3" = xyes; then

      AC_MSG_ERROR([--with-version-extra3 must have a value])

    elif test "x$with_version_extra3" = xno; then

      # Interpret --without-* as empty string (i.e. 0) instead of the literal "no"

      VERSION_EXTRA3=0

    elif test "x$with_version_extra3" = x; then

      VERSION_EXTRA3=0

    else

      JDKVER_CHECK_AND_SET_NUMBER(VERSION_EXTRA3, $with_version_extra3)

    fi

  else

    if test "x$NO_DEFAULT_VERSION_PARTS" != xtrue; then

      VERSION_EXTRA3=$DEFAULT_VERSION_EXTRA3

    fi

  fi

  # Calculate derived version properties

  # Set VERSION_IS_GA based on if VERSION_PRE has a value

  if test "x$VERSION_PRE" = x; then

    VERSION_IS_GA=true

  else

    VERSION_IS_GA=false

  fi

  # VERSION_NUMBER but always with exactly 4 positions, with 0 for empty positions.

  VERSION_NUMBER_FOUR_POSITIONS=$VERSION_FEATURE.$VERSION_INTERIM.$VERSION_UPDATE.$VERSION_PATCH

  # VERSION_NUMBER but always with all positions, with 0 for empty positions.

  VERSION_NUMBER_ALL_POSITIONS=$VERSION_NUMBER_FOUR_POSITIONS.$VERSION_EXTRA1.$VERSION_EXTRA2.$VERSION_EXTRA3

  stripped_version_number=$VERSION_NUMBER_ALL_POSITIONS

  # Strip trailing zeroes from stripped_version_number

  for i in 1 2 3 4 5 6 ; do stripped_version_number=${stripped_version_number%.0} ; done

  VERSION_NUMBER=$stripped_version_number

  # The complete version string, with additional build information

  if test "x$VERSION_BUILD$VERSION_OPT" = x; then

    VERSION_STRING=$VERSION_NUMBER${VERSION_PRE:+-$VERSION_PRE}

  else

    # If either build or opt is set, we need a + separator

    VERSION_STRING=$VERSION_NUMBER${VERSION_PRE:+-$VERSION_PRE}+$VERSION_BUILD${VERSION_OPT:+-$VERSION_OPT}

  fi

  # The short version string, just VERSION_NUMBER and PRE, if present.

  VERSION_SHORT=$VERSION_NUMBER${VERSION_PRE:+-$VERSION_PRE}

  # The version date

  AC_ARG_WITH(version-date, [AS_HELP_STRING([--with-version-date],

      [Set version date @<:@current source value@:>@])])

  if test "x$with_version_date" = xyes; then

    AC_MSG_ERROR([--with-version-date must have a value])

  elif test "x$with_version_date" != x; then

    if [ ! [[ $with_version_date =~ ^[0-9]{4}-[0-9]{2}-[0-9]{2}$ ]] ]; then

      AC_MSG_ERROR(["$with_version_date" is not a valid version date])

    else

      VERSION_DATE="$with_version_date"

    fi

  else

    VERSION_DATE="$DEFAULT_VERSION_DATE"

  fi

  # The vendor version string, if any

  AC_ARG_WITH(vendor-version-string, [AS_HELP_STRING([--with-vendor-version-string],

      [Set vendor version string @<:@not specified@:>@])])

  if test "x$with_vendor_version_string" = xyes; then

    AC_MSG_ERROR([--with-vendor-version-string must have a value])

  elif [ ! [[ $with_vendor_version_string =~ ^[[:graph:]]*$ ]] ]; then

    AC_MSG_ERROR([--with--vendor-version-string contains non-graphical characters: $with_vendor_version_string])

  else

    VENDOR_VERSION_STRING="$with_vendor_version_string"