115 lines
3.3 KiB
CMake
115 lines
3.3 KiB
CMake
# - Do a version-dependent check and auto-include backported modules dirs
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#
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# Name your module directories cmake-*-modules where * is the full
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# (maj.min.patch) version number that they came from. You can use
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# subdirectories within those directories, if you like - all directories
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# inside of a cmake-*-modules dir for a newer version of CMake that what
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# we're running, that contain one or more .cmake files, will be appended
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# to the CMAKE_MODULE_PATH.
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#
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# When backporting modules, be sure to test them and follow copyright
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# instructions (usually updating copyright notices)
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#
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# Requires these CMake modules:
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# CleanDirectoryList
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#
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# Original Author:
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# 2009-2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
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# http://academic.cleardefinition.com
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# Iowa State University HCI Graduate Program/VRAC
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#
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# Copyright Iowa State University 2009-2010.
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# Distributed under the Boost Software License, Version 1.0.
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# (See accompanying file LICENSE_1_0.txt or copy at
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# http://www.boost.org/LICENSE_1_0.txt)
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if(NOT CMAKE_VERSION) # defined in >=2.6.3
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set(_cmver
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"${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}.${CMAKE_PATCH_VERSION}")
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else()
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set(_cmver "${CMAKE_VERSION}")
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endif()
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include(CleanDirectoryList)
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# No debugging output please
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set(USE_BACKPORTED_MODULES_VERBOSE NO)
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get_filename_component(_moddir ${CMAKE_CURRENT_LIST_FILE} PATH)
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file(GLOB _globbed "${_moddir}/cmake-*-modules")
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if(USE_BACKPORTED_MODULES_VERBOSE)
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message(STATUS
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"UseBackportedModules: Detected use of CMake version ${_cmver}")
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message(STATUS "Checking these base directories: ${_globbed}")
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endif()
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foreach(_dir ${_globbed})
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string(REGEX
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MATCH
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"cmake-[0-9].[0-9].[0-9]-modules"
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_dirname
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"${_dir}")
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string(REGEX
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REPLACE
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"cmake-([0-9].[0-9].[0-9])-modules"
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"\\1"
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_ver
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"${_dirname}")
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string(REGEX
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REPLACE
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"cmake-([0-9]).([0-9]).([0-9])-modules"
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"\\1_\\2_\\3"
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_ver_clean
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"${_dirname}")
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if(USE_BACKPORTED_MODULES_VERBOSE)
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message(STATUS "${_dir}: ${_ver} ${_ver_clean}")
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endif()
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if("${_cmver}" VERSION_LESS "${_ver}")
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list(APPEND _upgradever "${_ver_clean}")
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file(GLOB_RECURSE _modules "${_dir}/*.cmake")
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foreach(_mod ${_modules})
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get_filename_component(_path "${_mod}" PATH)
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list(APPEND _paths_${_ver_clean} "${_path}")
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endforeach()
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endif()
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endforeach()
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# Autoinclude files from oldest version to newest version
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if(_upgradever)
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set(_save_cmake_module_path ${CMAKE_MODULE_PATH})
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list(REMOVE_DUPLICATES _upgradever)
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list(SORT _upgradever)
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foreach(_ver_clean ${_upgradever})
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clean_directory_list(_paths_${_ver_clean})
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foreach(_dir ${_paths_${_ver_clean}})
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set(CMAKE_MODULE_PATH ${_dir} ${_save_cmake_module_path})
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include("${_dir}/autoinclude.cmake" OPTIONAL RESULT_VARIABLE _result)
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if(USE_BACKPORTED_MODULES_VERBOSE)
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message(STATUS "${_dir} - Autoincluded: ${_result}")
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endif()
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endforeach()
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endforeach()
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set(CMAKE_MODULE_PATH ${_save_cmake_module_path})
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endif()
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# Add the module path from newest version to oldest version
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set(_added_module_path)
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if(_upgradever)
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list(REVERSE _upgradever)
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foreach(_ver_clean ${_upgradever})
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list(APPEND _added_module_path ${_paths_${_ver_clean}})
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endforeach()
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endif()
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list(APPEND CMAKE_MODULE_PATH ${_added_module_path})
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if(USE_BACKPORTED_MODULES_VERBOSE)
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message(STATUS "New module path: ${CMAKE_MODULE_PATH}")
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endif()
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