#  WRITE_BASIC_CONFIG_VERSION_FILE( filename VERSION major.minor.patch COMPATIBILITY (AnyNewerVersion|SameMajorVersion) )

#

# Deprecated, see WRITE_BASIC_PACKAGE_VERSION_FILE(), it is identical.

#=============================================================================

# Copyright 2008-2011 Alexander Neundorf, <neundorf@kde.org>

# Copyright 2004-2009 Kitware, Inc.

#

# Distributed under the OSI-approved BSD License (the "License");

# see accompanying file Copyright.txt for details.

#

# This software is distributed WITHOUT ANY WARRANTY; without even the

# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

# See the License for more information.

#=============================================================================

# (To distribute this file outside of CMake, substitute the full

#  License text for the above reference.)

include(CMakeParseArguments)

function(WRITE_BASIC_CONFIG_VERSION_FILE _filename)

  set(options )

  set(oneValueArgs VERSION COMPATIBILITY )

  set(multiValueArgs )

  cmake_parse_arguments(CVF "${options}" "${oneValueArgs}" "${multiValueArgs}"  ${ARGN})

  if(CVF_UNPARSED_ARGUMENTS)

    message(FATAL_ERROR "Unknown keywords given to WRITE_BASIC_CONFIG_VERSION_FILE(): \"${CVF_UNPARSED_ARGUMENTS}\"")

  endif()

  foreach(MODULE_PATH ${CMAKE_MODULE_PATH})

    if (${MODULE_PATH} MATCHES "compat_2.8.11")

      set(CURRENT_MODULE_PATH ${MODULE_PATH})

    endif()

  endforeach()

  set(versionTemplateFile "${CURRENT_MODULE_PATH}/BasicConfigVersion-${CVF_COMPATIBILITY}.cmake.in")

  if(NOT EXISTS "${versionTemplateFile}")

    message(FATAL_ERROR "Bad COMPATIBILITY value used for WRITE_BASIC_CONFIG_VERSION_FILE(): \"${CVF_COMPATIBILITY}\"")

  endif()

  if("${CVF_VERSION}" STREQUAL "")

    message(FATAL_ERROR "No VERSION specified for WRITE_BASIC_CONFIG_VERSION_FILE()")

  endif()

  configure_file("${versionTemplateFile}" "${_filename}" @ONLY)

endfunction()