]> sigrok.org Git - pulseview.git/commitdiff
Removed cotire
authorJoel Holdsworth <redacted>
Sun, 30 Nov 2014 14:14:10 +0000 (14:14 +0000)
committerJoel Holdsworth <redacted>
Wed, 3 Dec 2014 22:56:57 +0000 (22:56 +0000)
cotire has proven itself to be counter-productive. It rebuilds the pre-compiled
header after any header in pulseview is modified causes a complete rebuild of
all of PulseView. Also, the pre-compiled header contains a union of all the
includes of all source files, which masks errors where source files are missing
needed includes.

CMake/cotire.cmake [deleted file]
CMakeLists.txt

diff --git a/CMake/cotire.cmake b/CMake/cotire.cmake
deleted file mode 100644 (file)
index d855c1d..0000000
+++ /dev/null
@@ -1,3551 +0,0 @@
-# - cotire (compile time reducer)
-#
-# See the cotire manual for usage hints.
-#
-#=============================================================================
-# Copyright 2012-2014 Sascha Kratky
-#
-# Permission is hereby granted, free of charge, to any person
-# obtaining a copy of this software and associated documentation
-# files (the "Software"), to deal in the Software without
-# restriction, including without limitation the rights to use,
-# copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the
-# Software is furnished to do so, subject to the following
-# conditions:
-#
-# The above copyright notice and this permission notice shall be
-# included in all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
-# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-# OTHER DEALINGS IN THE SOFTWARE.
-#=============================================================================
-
-if(__COTIRE_INCLUDED)
-       return()
-endif()
-set(__COTIRE_INCLUDED TRUE)
-
-# call cmake_minimum_required, but prevent modification of the CMake policy stack in include mode
-# cmake_minimum_required also sets the policy version as a side effect, which we have to avoid
-if (NOT CMAKE_SCRIPT_MODE_FILE)
-       cmake_policy(PUSH)
-endif()
-# we need the CMake variables CMAKE_SCRIPT_MODE_FILE and CMAKE_ARGV available since 2.8.5
-# we need APPEND_STRING option for set_property available since 2.8.6
-cmake_minimum_required(VERSION 2.8.6)
-if (NOT CMAKE_SCRIPT_MODE_FILE)
-       cmake_policy(POP)
-endif()
-
-set (COTIRE_CMAKE_MODULE_FILE "${CMAKE_CURRENT_LIST_FILE}")
-set (COTIRE_CMAKE_MODULE_VERSION "1.6.6")
-
-include(CMakeParseArguments)
-include(ProcessorCount)
-
-function (cotire_determine_compiler_version _language _versionPrefix)
-       if (NOT ${_versionPrefix}_VERSION)
-               # use CMake's predefined compiler version variable (available since CMake 2.8.8)
-               if (DEFINED CMAKE_${_language}_COMPILER_VERSION)
-                       set (${_versionPrefix}_VERSION "${CMAKE_${_language}_COMPILER_VERSION}")
-               elseif (WIN32)
-                       # cl.exe messes with the output streams unless the environment variable VS_UNICODE_OUTPUT is cleared
-                       unset (ENV{VS_UNICODE_OUTPUT})
-                       string (STRIP "${CMAKE_${_language}_COMPILER_ARG1}" _compilerArg1)
-                       execute_process (
-                               COMMAND ${CMAKE_${_language}_COMPILER} ${_compilerArg1}
-                               ERROR_VARIABLE _versionLine OUTPUT_QUIET TIMEOUT 10)
-                       string (REGEX REPLACE ".*Version *([0-9]+(\\.[0-9]+)*).*" "\\1" ${_versionPrefix}_VERSION "${_versionLine}")
-               else()
-                       # assume GCC like command line interface
-                       string (STRIP "${CMAKE_${_language}_COMPILER_ARG1}" _compilerArg1)
-                       execute_process (
-                               COMMAND ${CMAKE_${_language}_COMPILER} ${_compilerArg1} "-dumpversion"
-                               OUTPUT_VARIABLE ${_versionPrefix}_VERSION
-                               RESULT_VARIABLE _result
-                               OUTPUT_STRIP_TRAILING_WHITESPACE TIMEOUT 10)
-                       if (_result)
-                               set (${_versionPrefix}_VERSION "")
-                       endif()
-               endif()
-               if (${_versionPrefix}_VERSION)
-                       set (${_versionPrefix}_VERSION "${${_versionPrefix}_VERSION}" CACHE INTERNAL "${_language} compiler version")
-               endif()
-               set (${_versionPrefix}_VERSION "${${_versionPrefix}_VERSION}" PARENT_SCOPE)
-               if (COTIRE_DEBUG)
-                       message (STATUS "${CMAKE_${_language}_COMPILER} version ${${_versionPrefix}_VERSION}")
-               endif()
-       endif()
-endfunction()
-
-function (cotire_get_source_file_extension _sourceFile _extVar)
-       # get_filename_component returns extension from first occurrence of . in file name
-       # this function computes the extension from last occurrence of . in file name
-       string (FIND "${_sourceFile}" "." _index REVERSE)
-       if (_index GREATER -1)
-               math (EXPR _index "${_index} + 1")
-               string (SUBSTRING "${_sourceFile}" ${_index} -1 _sourceExt)
-       else()
-               set (_sourceExt "")
-       endif()
-       set (${_extVar} "${_sourceExt}" PARENT_SCOPE)
-endfunction()
-
-macro (cotire_check_is_path_relative_to _path _isRelativeVar)
-       set (${_isRelativeVar} FALSE)
-       if (IS_ABSOLUTE "${_path}")
-               foreach (_dir ${ARGN})
-                       file (RELATIVE_PATH _relPath "${_dir}" "${_path}")
-                       if (NOT _relPath OR (NOT IS_ABSOLUTE "${_relPath}" AND NOT "${_relPath}" MATCHES "^\\.\\."))
-                               set (${_isRelativeVar} TRUE)
-                               break()
-                       endif()
-               endforeach()
-       endif()
-endmacro()
-
-function (cotire_filter_language_source_files _language _sourceFilesVar _excludedSourceFilesVar _cotiredSourceFilesVar)
-       set (_sourceFiles "")
-       set (_excludedSourceFiles "")
-       set (_cotiredSourceFiles "")
-       if (CMAKE_${_language}_SOURCE_FILE_EXTENSIONS)
-               set (_languageExtensions "${CMAKE_${_language}_SOURCE_FILE_EXTENSIONS}")
-       else()
-               set (_languageExtensions "")
-       endif()
-       if (CMAKE_${_language}_IGNORE_EXTENSIONS)
-               set (_ignoreExtensions "${CMAKE_${_language}_IGNORE_EXTENSIONS}")
-       else()
-               set (_ignoreExtensions "")
-       endif()
-       if (COTIRE_UNITY_SOURCE_EXCLUDE_EXTENSIONS)
-               set (_excludeExtensions "${COTIRE_UNITY_SOURCE_EXCLUDE_EXTENSIONS}")
-       else()
-               set (_excludeExtensions "")
-       endif()
-       if (COTIRE_DEBUG)
-               message (STATUS "${_language} source file extensions: ${_languageExtensions}")
-               message (STATUS "${_language} ignore extensions: ${_ignoreExtensions}")
-               message (STATUS "${_language} exclude extensions: ${_excludeExtensions}")
-       endif()
-       foreach (_sourceFile ${ARGN})
-               get_source_file_property(_sourceIsHeaderOnly "${_sourceFile}" HEADER_FILE_ONLY)
-               get_source_file_property(_sourceIsExternal "${_sourceFile}" EXTERNAL_OBJECT)
-               get_source_file_property(_sourceIsSymbolic "${_sourceFile}" SYMBOLIC)
-               get_source_file_property(_sourceLanguage "${_sourceFile}" LANGUAGE)
-               set (_sourceIsFiltered FALSE)
-               if (NOT _sourceIsHeaderOnly AND NOT _sourceIsExternal AND NOT _sourceIsSymbolic)
-                       cotire_get_source_file_extension("${_sourceFile}" _sourceExt)
-                       if (_sourceExt)
-                               list (FIND _ignoreExtensions "${_sourceExt}" _ignoreIndex)
-                               if (_ignoreIndex LESS 0)
-                                       list (FIND _excludeExtensions "${_sourceExt}" _excludeIndex)
-                                       if (_excludeIndex GREATER -1)
-                                               list (APPEND _excludedSourceFiles "${_sourceFile}")
-                                       else()
-                                               list (FIND _languageExtensions "${_sourceExt}" _sourceIndex)
-                                               if (_sourceIndex GREATER -1)
-                                                       set (_sourceIsFiltered TRUE)
-                                               elseif ("${_sourceLanguage}" STREQUAL "${_language}")
-                                                       # add to excluded sources, if file is not ignored and has correct language without having the correct extension
-                                                       list (APPEND _excludedSourceFiles "${_sourceFile}")
-                                               endif()
-                                       endif()
-                               endif()
-                       endif()
-               endif()
-               if (COTIRE_DEBUG)
-                       message (STATUS "${_sourceFile} filtered=${_sourceIsFiltered} language=${_sourceLanguage} header=${_sourceIsHeaderOnly}")
-               endif()
-               if (_sourceIsFiltered)
-                       get_source_file_property(_sourceIsExcluded "${_sourceFile}" COTIRE_EXCLUDED)
-                       get_source_file_property(_sourceIsCotired "${_sourceFile}" COTIRE_TARGET)
-                       get_source_file_property(_sourceCompileFlags "${_sourceFile}" COMPILE_FLAGS)
-                       if (COTIRE_DEBUG)
-                               message (STATUS "${_sourceFile} excluded=${_sourceIsExcluded} cotired=${_sourceIsCotired} compileFlags=${_sourceCompileFlags}")
-                       endif()
-                       if (_sourceIsCotired)
-                               list (APPEND _cotiredSourceFiles "${_sourceFile}")
-                       elseif (_sourceIsExcluded OR _sourceCompileFlags)
-                               list (APPEND _excludedSourceFiles "${_sourceFile}")
-                       else()
-                               list (APPEND _sourceFiles "${_sourceFile}")
-                       endif()
-               endif()
-       endforeach()
-       if (COTIRE_DEBUG)
-               message (STATUS "All: ${ARGN}")
-               message (STATUS "${_language}: ${_sourceFiles}")
-               message (STATUS "Excluded: ${_excludedSourceFiles}")
-               message (STATUS "Cotired: ${_cotiredSourceFiles}")
-       endif()
-       set (${_sourceFilesVar} ${_sourceFiles} PARENT_SCOPE)
-       set (${_excludedSourceFilesVar} ${_excludedSourceFiles} PARENT_SCOPE)
-       set (${_cotiredSourceFilesVar} ${_cotiredSourceFiles} PARENT_SCOPE)
-endfunction()
-
-function (cotire_get_objects_with_property_on _filteredObjectsVar _property _type)
-       set (_filteredObjects "")
-       foreach (_object ${ARGN})
-               get_property(_isSet ${_type} "${_object}" PROPERTY ${_property} SET)
-               if (_isSet)
-                       get_property(_propertyValue ${_type} "${_object}" PROPERTY ${_property})
-                       if (_propertyValue)
-                               list (APPEND _filteredObjects "${_object}")
-                       endif()
-               endif()
-       endforeach()
-       set (${_filteredObjectsVar} ${_filteredObjects} PARENT_SCOPE)
-endfunction()
-
-function (cotire_get_objects_with_property_off _filteredObjectsVar _property _type)
-       set (_filteredObjects "")
-       foreach (_object ${ARGN})
-               get_property(_isSet ${_type} "${_object}" PROPERTY ${_property} SET)
-               if (_isSet)
-                       get_property(_propertyValue ${_type} "${_object}" PROPERTY ${_property})
-                       if (NOT _propertyValue)
-                               list (APPEND _filteredObjects "${_object}")
-                       endif()
-               endif()
-       endforeach()
-       set (${_filteredObjectsVar} ${_filteredObjects} PARENT_SCOPE)
-endfunction()
-
-function (cotire_get_source_file_property_values _valuesVar _property)
-       set (_values "")
-       foreach (_sourceFile ${ARGN})
-               get_source_file_property(_propertyValue "${_sourceFile}" ${_property})
-               if (_propertyValue)
-                       list (APPEND _values "${_propertyValue}")
-               endif()
-       endforeach()
-       set (${_valuesVar} ${_values} PARENT_SCOPE)
-endfunction()
-
-function (cotire_resolve_config_properites _configurations _propertiesVar)
-       set (_properties "")
-       foreach (_property ${ARGN})
-               if ("${_property}" MATCHES "<CONFIG>")
-                       foreach (_config ${_configurations})
-                               string (TOUPPER "${_config}" _upperConfig)
-                               string (REPLACE "<CONFIG>" "${_upperConfig}" _configProperty "${_property}")
-                               list (APPEND _properties ${_configProperty})
-                       endforeach()
-               else()
-                       list (APPEND _properties ${_property})
-               endif()
-       endforeach()
-       set (${_propertiesVar} ${_properties} PARENT_SCOPE)
-endfunction()
-
-function (cotire_copy_set_properites _configurations _type _source _target)
-       cotire_resolve_config_properites("${_configurations}" _properties ${ARGN})
-       foreach (_property ${_properties})
-               get_property(_isSet ${_type} ${_source} PROPERTY ${_property} SET)
-               if (_isSet)
-                       get_property(_propertyValue ${_type} ${_source} PROPERTY ${_property})
-                       set_property(${_type} ${_target} PROPERTY ${_property} "${_propertyValue}")
-               endif()
-       endforeach()
-endfunction()
-
-function (cotire_get_target_link_libraries_for_usage_requirements _target _targetLinkLibrariesVar)
-       set (_targetLinkLibraries "")
-       get_target_property(_librariesToProcess ${_target} LINK_LIBRARIES)
-       while (_librariesToProcess)
-               # remove from head
-               list (GET _librariesToProcess 0 _library)
-               list (REMOVE_AT _librariesToProcess 0)
-               list (FIND _targetLinkLibraries ${_library} _index)
-               if (_index LESS 0)
-                       list (APPEND _targetLinkLibraries ${_library})
-                       # process transitive libraries
-                       if (TARGET ${_library})
-                               get_target_property(_libraries ${_library} INTERFACE_LINK_LIBRARIES)
-                               if (_libraries)
-                                       list (APPEND _librariesToProcess ${_libraries})
-                               endif()
-                       endif()
-               endif()
-       endwhile()
-       set (${_targetLinkLibrariesVar} ${_targetLinkLibraries} PARENT_SCOPE)
-endfunction()
-
-function (cotire_filter_compile_flags _language _flagFilter _matchedOptionsVar _unmatchedOptionsVar)
-       if (WIN32 AND CMAKE_${_language}_COMPILER_ID MATCHES "MSVC|Intel")
-               set (_flagPrefix "[/-]")
-       else()
-               set (_flagPrefix "--?")
-       endif()
-       set (_optionFlag "")
-       set (_matchedOptions "")
-       set (_unmatchedOptions "")
-       foreach (_compileFlag ${ARGN})
-               if (_compileFlag)
-                       if (_optionFlag AND NOT "${_compileFlag}" MATCHES "^${_flagPrefix}")
-                               # option with separate argument
-                               list (APPEND _matchedOptions "${_compileFlag}")
-                               set (_optionFlag "")
-                       elseif ("${_compileFlag}" MATCHES "^(${_flagPrefix})(${_flagFilter})$")
-                               # remember option
-                               set (_optionFlag "${CMAKE_MATCH_2}")
-                       elseif ("${_compileFlag}" MATCHES "^(${_flagPrefix})(${_flagFilter})(.+)$")
-                               # option with joined argument
-                               list (APPEND _matchedOptions "${CMAKE_MATCH_3}")
-                               set (_optionFlag "")
-                       else()
-                               # flush remembered option
-                               if (_optionFlag)
-                                       list (APPEND _matchedOptions "${_optionFlag}")
-                                       set (_optionFlag "")
-                               endif()
-                               # add to unfiltered options
-                               list (APPEND _unmatchedOptions "${_compileFlag}")
-                       endif()
-               endif()
-       endforeach()
-       if (_optionFlag)
-               list (APPEND _matchedOptions "${_optionFlag}")
-       endif()
-       if (COTIRE_DEBUG)
-               message (STATUS "Filter ${_flagFilter}")
-               if (_matchedOptions)
-                       message (STATUS "Matched ${_matchedOptions}")
-               endif()
-               if (_unmatchedOptions)
-                       message (STATUS "Unmatched ${_unmatchedOptions}")
-               endif()
-       endif()
-       set (${_matchedOptionsVar} ${_matchedOptions} PARENT_SCOPE)
-       set (${_unmatchedOptionsVar} ${_unmatchedOptions} PARENT_SCOPE)
-endfunction()
-
-function (cotire_get_target_compile_flags _config _language _directory _target _flagsVar)
-       string (TOUPPER "${_config}" _upperConfig)
-       # collect options from CMake language variables
-       set (_compileFlags "")
-       if (CMAKE_${_language}_FLAGS)
-               set (_compileFlags "${_compileFlags} ${CMAKE_${_language}_FLAGS}")
-       endif()
-       if (CMAKE_${_language}_FLAGS_${_upperConfig})
-               set (_compileFlags "${_compileFlags} ${CMAKE_${_language}_FLAGS_${_upperConfig}}")
-       endif()
-       if (_target)
-               # add option from CMake target type variable
-               get_target_property(_targetType ${_target} TYPE)
-               if (POLICY CMP0018)
-                       # handle POSITION_INDEPENDENT_CODE property introduced with CMake 2.8.9 if policy CMP0018 is turned on
-                       cmake_policy(GET CMP0018 _PIC_Policy)
-               else()
-                       # default to old behavior
-                       set (_PIC_Policy "OLD")
-               endif()
-               if (COTIRE_DEBUG)
-                       message(STATUS "CMP0018=${_PIC_Policy}")
-               endif()
-               if (_PIC_Policy STREQUAL "NEW")
-                       # NEW behavior: honor the POSITION_INDEPENDENT_CODE target property
-                       get_target_property(_targetPIC ${_target} POSITION_INDEPENDENT_CODE)
-                       if (_targetPIC)
-                               if (_targetType STREQUAL "EXECUTABLE" AND CMAKE_${_language}_COMPILE_OPTIONS_PIE)
-                                       set (_compileFlags "${_compileFlags} ${CMAKE_${_language}_COMPILE_OPTIONS_PIE}")
-                               elseif (CMAKE_${_language}_COMPILE_OPTIONS_PIC)
-                                       set (_compileFlags "${_compileFlags} ${CMAKE_${_language}_COMPILE_OPTIONS_PIC}")
-                               endif()
-                       endif()
-               else()
-                       # OLD behavior or policy not set: use the value of CMAKE_SHARED_LIBRARY_<Lang>_FLAGS
-                       if (_targetType STREQUAL "MODULE_LIBRARY")
-                               # flags variable for module library uses different name SHARED_MODULE
-                               # (e.g., CMAKE_SHARED_MODULE_C_FLAGS)
-                               set (_targetType SHARED_MODULE)
-                       endif()
-                       if (CMAKE_${_targetType}_${_language}_FLAGS)
-                               set (_compileFlags "${_compileFlags} ${CMAKE_${_targetType}_${_language}_FLAGS}")
-                       endif()
-               endif()
-       endif()
-       if (_directory)
-               # add_definitions may have been used to add flags to the compiler command
-               get_directory_property(_dirDefinitions DIRECTORY "${_directory}" DEFINITIONS)
-               if (_dirDefinitions)
-                       set (_compileFlags "${_compileFlags} ${_dirDefinitions}")
-               endif()
-       endif()
-       if (_target)
-               # add target compile options
-               get_target_property(_targetflags ${_target} COMPILE_FLAGS)
-               if (_targetflags)
-                       set (_compileFlags "${_compileFlags} ${_targetflags}")
-               endif()
-               get_target_property(_targetOptions ${_target} COMPILE_OPTIONS)
-               if (_targetOptions)
-                       set (_compileFlags "${_compileFlags} ${_targetOptions}")
-               endif()
-               # interface compile options from linked library targets
-               cotire_get_target_link_libraries_for_usage_requirements(${_target} _linkLibraries)
-               foreach (_library ${_linkLibraries})
-                       if (TARGET ${_library})
-                               get_target_property(_targetOptions ${_library} INTERFACE_COMPILE_OPTIONS)
-                               if (_targetOptions)
-                                       set (_compileFlags "${_compileFlags} ${_targetOptions}")
-                               endif()
-                       endif()
-               endforeach()
-       endif()
-       if (UNIX)
-               separate_arguments(_compileFlags UNIX_COMMAND "${_compileFlags}")
-       elseif(WIN32)
-               separate_arguments(_compileFlags WINDOWS_COMMAND "${_compileFlags}")
-       else()
-               separate_arguments(_compileFlags)
-       endif()
-       # platform specific flags
-       if (APPLE)
-               get_target_property(_architectures ${_target} OSX_ARCHITECTURES_${_upperConfig})
-               if (NOT _architectures)
-                       get_target_property(_architectures ${_target} OSX_ARCHITECTURES)
-               endif()
-               if (_architectures)
-                       foreach (_arch ${_architectures})
-                               list (APPEND _compileFlags "-arch" "${_arch}")
-                       endforeach()
-               endif()
-               if (CMAKE_OSX_SYSROOT)
-                       if (CMAKE_${_language}_SYSROOT_FLAG)
-                               list (APPEND _compileFlags "${CMAKE_${_language}_SYSROOT_FLAG}" "${CMAKE_OSX_SYSROOT}")
-                       else()
-                               list (APPEND _compileFlags "-isysroot" "${CMAKE_OSX_SYSROOT}")
-                       endif()
-               endif()
-               if (CMAKE_OSX_DEPLOYMENT_TARGET)
-                       if (CMAKE_${_language}_OSX_DEPLOYMENT_TARGET_FLAG)
-                               list (APPEND _compileFlags "${CMAKE_${_language}_OSX_DEPLOYMENT_TARGET_FLAG}${CMAKE_OSX_DEPLOYMENT_TARGET}")
-                       else()
-                               list (APPEND _compileFlags "-mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}")
-                       endif()
-               endif()
-       endif()
-       if (COTIRE_DEBUG AND _compileFlags)
-               message (STATUS "Target ${_target} compile flags ${_compileFlags}")
-       endif()
-       set (${_flagsVar} ${_compileFlags} PARENT_SCOPE)
-endfunction()
-
-function (cotire_get_target_include_directories _config _language _targetSourceDir _targetBinaryDir _target _includeDirsVar _systemIncludeDirsVar)
-       set (_includeDirs "")
-       set (_systemIncludeDirs "")
-       # default include dirs
-       if (CMAKE_INCLUDE_CURRENT_DIR)
-               list (APPEND _includeDirs "${_targetBinaryDir}")
-               list (APPEND _includeDirs "${_targetSourceDir}")
-       endif()
-       # parse additional include directories from target compile flags
-       set (_targetFlags "")
-       cotire_get_target_compile_flags("${_config}" "${_language}" "${_targetSourceDir}" "${_target}" _targetFlags)
-       cotire_filter_compile_flags("${_language}" "I" _dirs _ignore ${_targetFlags})
-       if (_dirs)
-               list (APPEND _includeDirs ${_dirs})
-       endif()
-       # target include directories
-       get_directory_property(_dirs DIRECTORY "${_targetSourceDir}" INCLUDE_DIRECTORIES)
-       if (_target)
-               get_target_property(_targetDirs ${_target} INCLUDE_DIRECTORIES)
-               if (_targetDirs)
-                       list (APPEND _dirs ${_targetDirs})
-               endif()
-               get_target_property(_targetDirs ${_target} INTERFACE_SYSTEM_INCLUDE_DIRECTORIES)
-               if (_targetDirs)
-                       list (APPEND _systemIncludeDirs ${_targetDirs})
-               endif()
-
-               # interface include directories from linked library targets
-               cotire_get_target_link_libraries_for_usage_requirements(${_target} _linkLibraries)
-               foreach (_library ${_linkLibraries})
-                       if (TARGET ${_library})
-                               get_target_property(_targetDirs ${_library} INTERFACE_INCLUDE_DIRECTORIES)
-                               if (_targetDirs)
-                                       list (APPEND _dirs ${_targetDirs})
-                               endif()
-                               get_target_property(_targetDirs ${_library} INTERFACE_SYSTEM_INCLUDE_DIRECTORIES)
-                               if (_targetDirs)
-                                       list (APPEND _systemIncludeDirs ${_targetDirs})
-                               endif()
-                       endif()
-               endforeach()
-       endif()
-       if (dirs)
-               list (REMOVE_DUPLICATES _dirs)
-       endif()
-       list (LENGTH _includeDirs _projectInsertIndex)
-       foreach (_dir ${_dirs})
-               if (CMAKE_INCLUDE_DIRECTORIES_PROJECT_BEFORE)
-                       cotire_check_is_path_relative_to("${_dir}" _isRelative "${CMAKE_SOURCE_DIR}" "${CMAKE_BINARY_DIR}")
-                       if (_isRelative)
-                               list (LENGTH _includeDirs _len)
-                               if (_len EQUAL _projectInsertIndex)
-                                       list (APPEND _includeDirs "${_dir}")
-                               else()
-                                       list (INSERT _includeDirs _projectInsertIndex "${_dir}")
-                               endif()
-                               math (EXPR _projectInsertIndex "${_projectInsertIndex} + 1")
-                       else()
-                               list (APPEND _includeDirs "${_dir}")
-                       endif()
-               else()
-                       list (APPEND _includeDirs "${_dir}")
-               endif()
-       endforeach()
-       list (REMOVE_DUPLICATES _includeDirs)
-       list (REMOVE_DUPLICATES _systemIncludeDirs)
-       if (CMAKE_${_language}_IMPLICIT_INCLUDE_DIRECTORIES)
-               list (REMOVE_ITEM _includeDirs ${CMAKE_${_language}_IMPLICIT_INCLUDE_DIRECTORIES})
-       endif()
-       if (COTIRE_DEBUG AND _includeDirs)
-               message (STATUS "Target ${_target} include dirs ${_includeDirs}")
-       endif()
-       set (${_includeDirsVar} ${_includeDirs} PARENT_SCOPE)
-       if (COTIRE_DEBUG AND _systemIncludeDirs)
-               message (STATUS "Target ${_target} system include dirs ${_systemIncludeDirs}")
-       endif()
-       set (${_systemIncludeDirsVar} ${_systemIncludeDirs} PARENT_SCOPE)
-endfunction()
-
-macro (cotire_make_C_identifier _identifierVar _str)
-       if (CMAKE_VERSION VERSION_LESS "2.8.12")
-               # mimic CMake SystemTools::MakeCindentifier behavior
-               if ("${_str}" MATCHES "^[0-9].+$")
-                       set (_str "_${str}")
-               endif()
-               string (REGEX REPLACE "[^a-zA-Z0-9]" "_" ${_identifierVar} "${_str}")
-       else()
-               string (MAKE_C_IDENTIFIER "${_str}" "${_identifierVar}")
-       endif()
-endmacro()
-
-function (cotire_get_target_export_symbol _target _exportSymbolVar)
-       set (_exportSymbol "")
-       get_target_property(_targetType ${_target} TYPE)
-       get_target_property(_enableExports ${_target} ENABLE_EXPORTS)
-       if (_targetType MATCHES "(SHARED|MODULE)_LIBRARY" OR
-               (_targetType STREQUAL "EXECUTABLE" AND _enableExports))
-               get_target_property(_exportSymbol ${_target} DEFINE_SYMBOL)
-               if (NOT _exportSymbol)
-                       set (_exportSymbol "${_target}_EXPORTS")
-               endif()
-               cotire_make_C_identifier(_exportSymbol "${_exportSymbol}")
-       endif()
-       set (${_exportSymbolVar} ${_exportSymbol} PARENT_SCOPE)
-endfunction()
-
-function (cotire_get_target_compile_definitions _config _language _directory _target _definitionsVar)
-       string (TOUPPER "${_config}" _upperConfig)
-       set (_configDefinitions "")
-       # CMAKE_INTDIR for multi-configuration build systems
-       if (NOT "${CMAKE_CFG_INTDIR}" STREQUAL ".")
-               list (APPEND _configDefinitions "CMAKE_INTDIR=\"${_config}\"")
-       endif()
-       # target export define symbol
-       cotire_get_target_export_symbol("${_target}" _defineSymbol)
-       if (_defineSymbol)
-               list (APPEND _configDefinitions "${_defineSymbol}")
-       endif()
-       # directory compile definitions
-       get_directory_property(_definitions DIRECTORY "${_directory}" COMPILE_DEFINITIONS)
-       if (_definitions)
-               list (APPEND _configDefinitions ${_definitions})
-       endif()
-       get_directory_property(_definitions DIRECTORY "${_directory}" COMPILE_DEFINITIONS_${_upperConfig})
-       if (_definitions)
-               list (APPEND _configDefinitions ${_definitions})
-       endif()
-       # target compile definitions
-       get_target_property(_definitions ${_target} COMPILE_DEFINITIONS)
-       if (_definitions)
-               list (APPEND _configDefinitions ${_definitions})
-       endif()
-       get_target_property(_definitions ${_target} COMPILE_DEFINITIONS_${_upperConfig})
-       if (_definitions)
-               list (APPEND _configDefinitions ${_definitions})
-       endif()
-       # interface compile definitions from linked library targets
-       cotire_get_target_link_libraries_for_usage_requirements(${_target} _linkLibraries)
-       foreach (_library ${_linkLibraries})
-               if (TARGET ${_library})
-                       get_target_property(_definitions ${_library} INTERFACE_COMPILE_DEFINITIONS)
-                       if (_definitions)
-                               list (APPEND _configDefinitions ${_definitions})
-                       endif()
-               endif()
-       endforeach()
-       # parse additional compile definitions from target compile flags
-       # and don't look at directory compile definitions, which we already handled
-       set (_targetFlags "")
-       cotire_get_target_compile_flags("${_config}" "${_language}" "" "${_target}" _targetFlags)
-       cotire_filter_compile_flags("${_language}" "D" _definitions _ignore ${_targetFlags})
-       if (_definitions)
-               list (APPEND _configDefinitions ${_definitions})
-       endif()
-       list (REMOVE_DUPLICATES _configDefinitions)
-       if (COTIRE_DEBUG AND _configDefinitions)
-               message (STATUS "Target ${_target} compile definitions ${_configDefinitions}")
-       endif()
-       set (${_definitionsVar} ${_configDefinitions} PARENT_SCOPE)
-endfunction()
-
-function (cotire_get_target_compiler_flags _config _language _directory _target _compilerFlagsVar)
-       # parse target compile flags omitting compile definitions and include directives
-       set (_targetFlags "")
-       cotire_get_target_compile_flags("${_config}" "${_language}" "${_directory}" "${_target}" _targetFlags)
-       set (_compilerFlags "")
-       cotire_filter_compile_flags("${_language}" "[ID]" _ignore _compilerFlags ${_targetFlags})
-       if (COTIRE_DEBUG AND _compilerFlags)
-               message (STATUS "Target ${_target} compiler flags ${_compilerFlags}")
-       endif()
-       set (${_compilerFlagsVar} ${_compilerFlags} PARENT_SCOPE)
-endfunction()
-
-function (cotire_add_sys_root_paths _pathsVar)
-       if (APPLE)
-               if (CMAKE_OSX_SYSROOT AND CMAKE_${_language}_HAS_ISYSROOT)
-                       foreach (_path IN LISTS ${_pathsVar})
-                               if (IS_ABSOLUTE "${_path}")
-                                       get_filename_component(_path "${CMAKE_OSX_SYSROOT}/${_path}" ABSOLUTE)
-                                       if (EXISTS "${_path}")
-                                               list (APPEND ${_pathsVar} "${_path}")
-                                       endif()
-                               endif()
-                       endforeach()
-               endif()
-       endif()
-       set (${_pathsVar} ${${_pathsVar}} PARENT_SCOPE)
-       if (COTIRE_DEBUG)
-               message (STATUS "${_pathsVar}=${${_pathsVar}}")
-       endif()
-endfunction()
-
-function (cotire_get_source_extra_properties _sourceFile _pattern _resultVar)
-       set (_extraProperties ${ARGN})
-       set (_result "")
-       if (_extraProperties)
-               list (FIND _extraProperties "${_sourceFile}" _index)
-               if (_index GREATER -1)
-                       math (EXPR _index "${_index} + 1")
-                       list (LENGTH _extraProperties _len)
-                       math (EXPR _len "${_len} - 1")
-                       foreach (_index RANGE ${_index} ${_len})
-                               list (GET _extraProperties ${_index} _value)
-                               if (_value MATCHES "${_pattern}")
-                                       list (APPEND _result "${_value}")
-                               else()
-                                       break()
-                               endif()
-                       endforeach()
-               endif()
-       endif()
-       set (${_resultVar} ${_result} PARENT_SCOPE)
-endfunction()
-
-function (cotire_get_source_compile_definitions _config _language _sourceFile _definitionsVar)
-       set (_compileDefinitions "")
-       if (NOT CMAKE_SCRIPT_MODE_FILE)
-               string (TOUPPER "${_config}" _upperConfig)
-               get_source_file_property(_definitions "${_sourceFile}" COMPILE_DEFINITIONS)
-               if (_definitions)
-                       list (APPEND _compileDefinitions ${_definitions})
-               endif()
-               get_source_file_property(_definitions "${_sourceFile}" COMPILE_DEFINITIONS_${_upperConfig})
-               if (_definitions)
-                       list (APPEND _compileDefinitions ${_definitions})
-               endif()
-       endif()
-       cotire_get_source_extra_properties("${_sourceFile}" "^[a-zA-Z0-9_]+(=.*)?$" _definitions ${ARGN})
-       if (_definitions)
-               list (APPEND _compileDefinitions ${_definitions})
-       endif()
-       if (COTIRE_DEBUG AND _compileDefinitions)
-               message (STATUS "Source ${_sourceFile} compile definitions ${_compileDefinitions}")
-       endif()
-       set (${_definitionsVar} ${_compileDefinitions} PARENT_SCOPE)
-endfunction()
-
-function (cotire_get_source_files_compile_definitions _config _language _definitionsVar)
-       set (_configDefinitions "")
-       foreach (_sourceFile ${ARGN})
-               cotire_get_source_compile_definitions("${_config}" "${_language}" "${_sourceFile}" _sourceDefinitions)
-               if (_sourceDefinitions)
-                       list (APPEND _configDefinitions "${_sourceFile}" ${_sourceDefinitions} "-")
-               endif()
-       endforeach()
-       set (${_definitionsVar} ${_configDefinitions} PARENT_SCOPE)
-endfunction()
-
-function (cotire_get_source_undefs _sourceFile _property _sourceUndefsVar)
-       set (_sourceUndefs "")
-       if (NOT CMAKE_SCRIPT_MODE_FILE)
-               get_source_file_property(_undefs "${_sourceFile}" ${_property})
-               if (_undefs)
-                       list (APPEND _sourceUndefs ${_undefs})
-               endif()
-       endif()
-       cotire_get_source_extra_properties("${_sourceFile}" "^[a-zA-Z0-9_]+$" _undefs ${ARGN})
-       if (_undefs)
-               list (APPEND _sourceUndefs ${_undefs})
-       endif()
-       if (COTIRE_DEBUG AND _sourceUndefs)
-               message (STATUS "Source ${_sourceFile} ${_property} undefs ${_sourceUndefs}")
-       endif()
-       set (${_sourceUndefsVar} ${_sourceUndefs} PARENT_SCOPE)
-endfunction()
-
-function (cotire_get_source_files_undefs _property _sourceUndefsVar)
-       set (_sourceUndefs "")
-       foreach (_sourceFile ${ARGN})
-               cotire_get_source_undefs("${_sourceFile}" ${_property} _undefs)
-               if (_undefs)
-                       list (APPEND _sourceUndefs "${_sourceFile}" ${_undefs} "-")
-               endif()
-       endforeach()
-       set (${_sourceUndefsVar} ${_sourceUndefs} PARENT_SCOPE)
-endfunction()
-
-macro (cotire_set_cmd_to_prologue _cmdVar)
-       set (${_cmdVar} "${CMAKE_COMMAND}")
-       if (COTIRE_DEBUG)
-               list (APPEND ${_cmdVar} "--warn-uninitialized")
-       endif()
-       list (APPEND ${_cmdVar} "-DCOTIRE_BUILD_TYPE:STRING=$<CONFIGURATION>")
-       if (COTIRE_VERBOSE)
-               list (APPEND ${_cmdVar} "-DCOTIRE_VERBOSE:BOOL=ON")
-       elseif("${CMAKE_GENERATOR}" MATCHES "Makefiles")
-               list (APPEND ${_cmdVar} "-DCOTIRE_VERBOSE:BOOL=$(VERBOSE)")
-       endif()
-endmacro()
-
-function (cotire_init_compile_cmd _cmdVar _language _compilerExe _compilerArg1)
-       if (NOT _compilerExe)
-               set (_compilerExe "${CMAKE_${_language}_COMPILER}")
-       endif()
-       if (NOT _compilerArg1)
-               set (_compilerArg1 ${CMAKE_${_language}_COMPILER_ARG1})
-       endif()
-       string (STRIP "${_compilerArg1}" _compilerArg1)
-       set (${_cmdVar} "${_compilerExe}" ${_compilerArg1} PARENT_SCOPE)
-endfunction()
-
-macro (cotire_add_definitions_to_cmd _cmdVar _language)
-       foreach (_definition ${ARGN})
-               if (WIN32 AND CMAKE_${_language}_COMPILER_ID MATCHES "MSVC|Intel")
-                       list (APPEND ${_cmdVar} "/D${_definition}")
-               else()
-                       list (APPEND ${_cmdVar} "-D${_definition}")
-               endif()
-       endforeach()
-endmacro()
-
-macro (cotire_add_includes_to_cmd _cmdVar _language _includeSystemFlag _includesVar _systemIncludesVar)
-       foreach (_include ${${_includesVar}})
-               if (WIN32 AND CMAKE_${_language}_COMPILER_ID MATCHES "MSVC|Intel")
-                       file (TO_NATIVE_PATH "${_include}" _include)
-                       list (APPEND ${_cmdVar} "/I${_include}")
-               else()
-                       list (FIND ${_systemIncludesVar} ${_include} _index)
-                       if(_index GREATER -1 AND NOT "${_includeSystemFlag}" STREQUAL "")
-                               list (APPEND ${_cmdVar} "${_includeSystemFlag}${_include}")
-                       else()
-                               list (APPEND ${_cmdVar} "-I${_include}")
-                       endif()
-               endif()
-       endforeach()
-endmacro()
-
-macro (cotire_add_frameworks_to_cmd _cmdVar _language)
-       if (APPLE)
-               set (_frameWorkDirs "")
-               foreach (_include ${ARGN})
-                       if (IS_ABSOLUTE "${_include}" AND _include MATCHES "\\.framework$")
-                               get_filename_component(_frameWorkDir "${_include}" PATH)
-                               list (APPEND _frameWorkDirs "${_frameWorkDir}")
-                       endif()
-               endforeach()
-               if (_frameWorkDirs)
-                       list (REMOVE_DUPLICATES _frameWorkDirs)
-                       foreach (_frameWorkDir ${_frameWorkDirs})
-                               list (APPEND ${_cmdVar} "-F${_frameWorkDir}")
-                       endforeach()
-               endif()
-       endif()
-endmacro()
-
-macro (cotire_add_compile_flags_to_cmd _cmdVar)
-       foreach (_flag ${ARGN})
-               list (APPEND ${_cmdVar} "${_flag}")
-       endforeach()
-endmacro()
-
-function (cotire_check_file_up_to_date _fileIsUpToDateVar _file)
-       set (${_fileIsUpToDateVar} FALSE PARENT_SCOPE)
-       set (_triggerFile "")
-       foreach (_dependencyFile ${ARGN})
-               if (EXISTS "${_dependencyFile}" AND "${_dependencyFile}" IS_NEWER_THAN "${_file}")
-                       set (_triggerFile "${_dependencyFile}")
-                       break()
-               endif()
-       endforeach()
-       get_filename_component(_fileName "${_file}" NAME)
-       if (EXISTS "${_file}")
-               if (_triggerFile)
-                       if (COTIRE_VERBOSE)
-                               message (STATUS "${_fileName} update triggered by ${_triggerFile} change.")
-                       endif()
-               else()
-                       if (COTIRE_VERBOSE)
-                               message (STATUS "${_fileName} is up-to-date.")
-                       endif()
-                       set (${_fileIsUpToDateVar} TRUE PARENT_SCOPE)
-               endif()
-       else()
-               if (COTIRE_VERBOSE)
-                       message (STATUS "${_fileName} does not exist yet.")
-               endif()
-       endif()
-endfunction()
-
-macro (cotire_find_closest_relative_path _headerFile _includeDirs _relPathVar)
-       set (${_relPathVar} "")
-       foreach (_includeDir ${_includeDirs})
-               if (IS_DIRECTORY "${_includeDir}")
-                       file (RELATIVE_PATH _relPath "${_includeDir}" "${_headerFile}")
-                       if (NOT IS_ABSOLUTE "${_relPath}" AND NOT "${_relPath}" MATCHES "^\\.\\.")
-                               string (LENGTH "${${_relPathVar}}" _closestLen)
-                               string (LENGTH "${_relPath}" _relLen)
-                               if (_closestLen EQUAL 0 OR _relLen LESS _closestLen)
-                                       set (${_relPathVar} "${_relPath}")
-                               endif()
-                       endif()
-               elseif ("${_includeDir}" STREQUAL "${_headerFile}")
-                       # if path matches exactly, return short non-empty string
-                       set (${_relPathVar} "1")
-                       break()
-               endif()
-       endforeach()
-endmacro()
-
-macro (cotire_check_header_file_location _headerFile _insideIncudeDirs _outsideIncudeDirs _headerIsInside)
-       # check header path against ignored and honored include directories
-       cotire_find_closest_relative_path("${_headerFile}" "${_insideIncudeDirs}" _insideRelPath)
-       if (_insideRelPath)
-               # header is inside, but could be become outside if there is a shorter outside match
-               cotire_find_closest_relative_path("${_headerFile}" "${_outsideIncudeDirs}" _outsideRelPath)
-               if (_outsideRelPath)
-                       string (LENGTH "${_insideRelPath}" _insideRelPathLen)
-                       string (LENGTH "${_outsideRelPath}" _outsideRelPathLen)
-                       if (_outsideRelPathLen LESS _insideRelPathLen)
-                               set (${_headerIsInside} FALSE)
-                       else()
-                               set (${_headerIsInside} TRUE)
-                       endif()
-               else()
-                       set (${_headerIsInside} TRUE)
-               endif()
-       else()
-               # header is outside
-               set (${_headerIsInside} FALSE)
-       endif()
-endmacro()
-
-macro (cotire_check_ignore_header_file_path _headerFile _headerIsIgnoredVar)
-       if (NOT EXISTS "${_headerFile}")
-               set (${_headerIsIgnoredVar} TRUE)
-       elseif (IS_DIRECTORY "${_headerFile}")
-               set (${_headerIsIgnoredVar} TRUE)
-       elseif ("${_headerFile}" MATCHES "\\.\\.|[_-]fixed" AND "${_headerFile}" MATCHES "\\.h$")
-               # heuristic: ignore C headers with embedded parent directory references or "-fixed" or "_fixed" in path
-               # these often stem from using GCC #include_next tricks, which may break the precompiled header compilation
-               # with the error message "error: no include path in which to search for header.h"
-               set (${_headerIsIgnoredVar} TRUE)
-       else()
-               set (${_headerIsIgnoredVar} FALSE)
-       endif()
-endmacro()
-
-macro (cotire_check_ignore_header_file_ext _headerFile _ignoreExtensionsVar _headerIsIgnoredVar)
-       # check header file extension
-       cotire_get_source_file_extension("${_headerFile}" _headerFileExt)
-       set (${_headerIsIgnoredVar} FALSE)
-       if (_headerFileExt)
-               list (FIND ${_ignoreExtensionsVar} "${_headerFileExt}" _index)
-               if (_index GREATER -1)
-                       set (${_headerIsIgnoredVar} TRUE)
-               endif()
-       endif()
-endmacro()
-
-macro (cotire_parse_line _line _headerFileVar _headerDepthVar)
-       if (MSVC)
-               # cl.exe /showIncludes output looks different depending on the language pack used, e.g.:
-               # English: "Note: including file:   C:\directory\file"
-               # German: "Hinweis: Einlesen der Datei:   C:\directory\file"
-               # We use a very general regular expression, relying on the presence of the : characters
-               if (_line MATCHES ":( +)([^:]+:[^:]+)$")
-                       # Visual Studio compiler output
-                       string (LENGTH "${CMAKE_MATCH_1}" ${_headerDepthVar})
-                       get_filename_component(${_headerFileVar} "${CMAKE_MATCH_2}" ABSOLUTE)
-               else()
-                       set (${_headerFileVar} "")
-                       set (${_headerDepthVar} 0)
-               endif()
-       else()
-               if (_line MATCHES "^(\\.+) (.*)$")
-                       # GCC like output
-                       string (LENGTH "${CMAKE_MATCH_1}" ${_headerDepthVar})
-                       if (IS_ABSOLUTE "${CMAKE_MATCH_2}")
-                               set (${_headerFileVar} "${CMAKE_MATCH_2}")
-                       else()
-                               get_filename_component(${_headerFileVar} "${CMAKE_MATCH_2}" REALPATH)
-                       endif()
-               else()
-                       set (${_headerFileVar} "")
-                       set (${_headerDepthVar} 0)
-               endif()
-       endif()
-endmacro()
-
-function (cotire_parse_includes _language _scanOutput _ignoredIncudeDirs _honoredIncudeDirs _ignoredExtensions _selectedIncludesVar _unparsedLinesVar)
-       if (WIN32)
-               # prevent CMake macro invocation errors due to backslash characters in Windows paths
-               string (REPLACE "\\" "/" _scanOutput "${_scanOutput}")
-       endif()
-       # canonize slashes
-       string (REPLACE "//" "/" _scanOutput "${_scanOutput}")
-       # prevent semicolon from being interpreted as a line separator
-       string (REPLACE ";" "\\;" _scanOutput "${_scanOutput}")
-       # then separate lines
-       string (REGEX REPLACE "\n" ";" _scanOutput "${_scanOutput}")
-       list (LENGTH _scanOutput _len)
-       # remove duplicate lines to speed up parsing
-       list (REMOVE_DUPLICATES _scanOutput)
-       list (LENGTH _scanOutput _uniqueLen)
-       if (COTIRE_VERBOSE OR COTIRE_DEBUG)
-               message (STATUS "Scanning ${_uniqueLen} unique lines of ${_len} for includes")
-               if (_ignoredExtensions)
-                       message (STATUS "Ignored extensions: ${_ignoredExtensions}")
-               endif()
-               if (_ignoredIncudeDirs)
-                       message (STATUS "Ignored paths: ${_ignoredIncudeDirs}")
-               endif()
-               if (_honoredIncudeDirs)
-                       message (STATUS "Included paths: ${_honoredIncudeDirs}")
-               endif()
-       endif()
-       set (_sourceFiles ${ARGN})
-       set (_selectedIncludes "")
-       set (_unparsedLines "")
-       # stack keeps track of inside/outside project status of processed header files
-       set (_headerIsInsideStack "")
-       foreach (_line IN LISTS _scanOutput)
-               if (_line)
-                       cotire_parse_line("${_line}" _headerFile _headerDepth)
-                       if (_headerFile)
-                               cotire_check_header_file_location("${_headerFile}" "${_ignoredIncudeDirs}" "${_honoredIncudeDirs}" _headerIsInside)
-                               if (COTIRE_DEBUG)
-                                       message (STATUS "${_headerDepth}: ${_headerFile} ${_headerIsInside}")
-                               endif()
-                               # update stack
-                               list (LENGTH _headerIsInsideStack _stackLen)
-                               if (_headerDepth GREATER _stackLen)
-                                       math (EXPR _stackLen "${_stackLen} + 1")
-                                       foreach (_index RANGE ${_stackLen} ${_headerDepth})
-                                               list (APPEND _headerIsInsideStack ${_headerIsInside})
-                                       endforeach()
-                               else()
-                                       foreach (_index RANGE ${_headerDepth} ${_stackLen})
-                                               list (REMOVE_AT _headerIsInsideStack -1)
-                                       endforeach()
-                                       list (APPEND _headerIsInsideStack ${_headerIsInside})
-                               endif()
-                               if (COTIRE_DEBUG)
-                                       message (STATUS "${_headerIsInsideStack}")
-                               endif()
-                               # header is a candidate if it is outside project
-                               if (NOT _headerIsInside)
-                                       # get parent header file's inside/outside status
-                                       if (_headerDepth GREATER 1)
-                                               math (EXPR _index "${_headerDepth} - 2")
-                                               list (GET _headerIsInsideStack ${_index} _parentHeaderIsInside)
-                                       else()
-                                               set (_parentHeaderIsInside TRUE)
-                                       endif()
-                                       # select header file if parent header file is inside project
-                                       # (e.g., a project header file that includes a standard header file)
-                                       if (_parentHeaderIsInside)
-                                               cotire_check_ignore_header_file_path("${_headerFile}" _headerIsIgnored)
-                                               if (NOT _headerIsIgnored)
-                                                       cotire_check_ignore_header_file_ext("${_headerFile}" _ignoredExtensions _headerIsIgnored)
-                                                       if (NOT _headerIsIgnored)
-                                                               list (APPEND _selectedIncludes "${_headerFile}")
-                                                       else()
-                                                               # fix header's inside status on stack, it is ignored by extension now
-                                                               list (REMOVE_AT _headerIsInsideStack -1)
-                                                               list (APPEND _headerIsInsideStack TRUE)
-                                                       endif()
-                                               endif()
-                                               if (COTIRE_DEBUG)
-                                                       message (STATUS "${_headerFile} ${_ignoredExtensions} ${_headerIsIgnored}")
-                                               endif()
-                                       endif()
-                               endif()
-                       else()
-                               if (MSVC)
-                                       # for cl.exe do not keep unparsed lines which solely consist of a source file name
-                                       string (FIND "${_sourceFiles}" "${_line}" _index)
-                                       if (_index LESS 0)
-                                               list (APPEND _unparsedLines "${_line}")
-                                       endif()
-                               else()
-                                       list (APPEND _unparsedLines "${_line}")
-                               endif()
-                       endif()
-               endif()
-       endforeach()
-       list (REMOVE_DUPLICATES _selectedIncludes)
-       set (${_selectedIncludesVar} ${_selectedIncludes} PARENT_SCOPE)
-       set (${_unparsedLinesVar} ${_unparsedLines} PARENT_SCOPE)
-endfunction()
-
-function (cotire_scan_includes _includesVar)
-       set(_options "")
-       set(_oneValueArgs COMPILER_ID COMPILER_EXECUTABLE COMPILER_VERSION INCLUDE_SYSTEM_FLAG LANGUAGE UNPARSED_LINES)
-       set(_multiValueArgs COMPILE_DEFINITIONS COMPILE_FLAGS INCLUDE_DIRECTORIES SYSTEM_INCLUDE_DIRECTORIES IGNORE_PATH INCLUDE_PATH IGNORE_EXTENSIONS)
-       cmake_parse_arguments(_option "${_options}" "${_oneValueArgs}" "${_multiValueArgs}" ${ARGN})
-       set (_sourceFiles ${_option_UNPARSED_ARGUMENTS})
-       if (NOT _option_LANGUAGE)
-               set (_option_LANGUAGE "CXX")
-       endif()
-       if (NOT _option_COMPILER_ID)
-               set (_option_COMPILER_ID "${CMAKE_${_option_LANGUAGE}_ID}")
-       endif()
-       set (_cmd "${_option_COMPILER_EXECUTABLE}" ${_option_COMPILER_ARG1})
-       cotire_init_compile_cmd(_cmd "${_option_LANGUAGE}" "${_option_COMPILER_EXECUTABLE}" "${_option_COMPILER_ARG1}")
-       cotire_add_definitions_to_cmd(_cmd "${_option_LANGUAGE}" ${_option_COMPILE_DEFINITIONS})
-       cotire_add_compile_flags_to_cmd(_cmd ${_option_COMPILE_FLAGS})
-       cotire_add_includes_to_cmd(_cmd "${_option_LANGUAGE}" "${_option_INCLUDE_SYSTEM_FLAG}" _option_INCLUDE_DIRECTORIES _option_SYSTEM_INCLUDE_DIRECTORIES)
-       cotire_add_frameworks_to_cmd(_cmd "${_option_LANGUAGE}" ${_option_INCLUDE_DIRECTORIES})
-       cotire_add_makedep_flags("${_option_LANGUAGE}" "${_option_COMPILER_ID}" "${_option_COMPILER_VERSION}" _cmd)
-       # only consider existing source files for scanning
-       set (_existingSourceFiles "")
-       foreach (_sourceFile ${_sourceFiles})
-               if (EXISTS "${_sourceFile}")
-                       list (APPEND _existingSourceFiles "${_sourceFile}")
-               endif()
-       endforeach()
-       if (NOT _existingSourceFiles)
-               set (${_includesVar} "" PARENT_SCOPE)
-               return()
-       endif()
-       list (APPEND _cmd ${_existingSourceFiles})
-       if (COTIRE_VERBOSE)
-               message (STATUS "execute_process: ${_cmd}")
-       endif()
-       if (_option_COMPILER_ID MATCHES "MSVC")
-               if (COTIRE_DEBUG)
-                       message (STATUS "clearing VS_UNICODE_OUTPUT")
-               endif()
-               # cl.exe messes with the output streams unless the environment variable VS_UNICODE_OUTPUT is cleared
-               unset (ENV{VS_UNICODE_OUTPUT})
-       endif()
-       execute_process(
-               COMMAND ${_cmd} WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
-               RESULT_VARIABLE _result OUTPUT_QUIET ERROR_VARIABLE _output)
-       if (_result)
-               message (STATUS "Result ${_result} scanning includes of ${_existingSourceFiles}.")
-       endif()
-       cotire_parse_includes(
-               "${_option_LANGUAGE}" "${_output}"
-               "${_option_IGNORE_PATH}" "${_option_INCLUDE_PATH}"
-               "${_option_IGNORE_EXTENSIONS}"
-               _includes _unparsedLines
-               ${_sourceFiles})
-       set (${_includesVar} ${_includes} PARENT_SCOPE)
-       if (_option_UNPARSED_LINES)
-               set (${_option_UNPARSED_LINES} ${_unparsedLines} PARENT_SCOPE)
-       endif()
-endfunction()
-
-macro (cotire_append_undefs _contentsVar)
-       set (_undefs ${ARGN})
-       if (_undefs)
-               list (REMOVE_DUPLICATES _undefs)
-               foreach (_definition ${_undefs})
-                       list (APPEND ${_contentsVar} "#undef ${_definition}")
-               endforeach()
-       endif()
-endmacro()
-
-macro (cotire_comment_str _language _commentText _commentVar)
-       if ("${_language}" STREQUAL "CMAKE")
-               set (${_commentVar} "# ${_commentText}")
-       else()
-               set (${_commentVar} "/* ${_commentText} */")
-       endif()
-endmacro()
-
-function (cotire_write_file _language _file _contents _force)
-       get_filename_component(_moduleName "${COTIRE_CMAKE_MODULE_FILE}" NAME)
-       cotire_comment_str("${_language}" "${_moduleName} ${COTIRE_CMAKE_MODULE_VERSION} generated file" _header1)
-       cotire_comment_str("${_language}" "${_file}" _header2)
-       set (_contents "${_header1}\n${_header2}\n${_contents}")
-       if (COTIRE_DEBUG)
-               message (STATUS "${_contents}")
-       endif()
-       if (_force OR NOT EXISTS "${_file}")
-               file (WRITE "${_file}" "${_contents}")
-       else()
-               file (READ "${_file}" _oldContents)
-               if (NOT "${_oldContents}" STREQUAL "${_contents}")
-                       file (WRITE "${_file}" "${_contents}")
-               else()
-                       if (COTIRE_DEBUG)
-                               message (STATUS "${_file} unchanged")
-                       endif()
-               endif()
-       endif()
-endfunction()
-
-function (cotire_generate_unity_source _unityFile)
-       set(_options "")
-       set(_oneValueArgs LANGUAGE)
-       set(_multiValueArgs
-               DEPENDS SOURCES_COMPILE_DEFINITIONS
-               PRE_UNDEFS SOURCES_PRE_UNDEFS POST_UNDEFS SOURCES_POST_UNDEFS PROLOGUE EPILOGUE)
-       cmake_parse_arguments(_option "${_options}" "${_oneValueArgs}" "${_multiValueArgs}" ${ARGN})
-       if (_option_DEPENDS)
-               cotire_check_file_up_to_date(_unityFileIsUpToDate "${_unityFile}" ${_option_DEPENDS})
-               if (_unityFileIsUpToDate)
-                       return()
-               endif()
-       endif()
-       set (_sourceFiles ${_option_UNPARSED_ARGUMENTS})
-       if (NOT _option_PRE_UNDEFS)
-               set (_option_PRE_UNDEFS "")
-       endif()
-       if (NOT _option_SOURCES_PRE_UNDEFS)
-               set (_option_SOURCES_PRE_UNDEFS "")
-       endif()
-       if (NOT _option_POST_UNDEFS)
-               set (_option_POST_UNDEFS "")
-       endif()
-       if (NOT _option_SOURCES_POST_UNDEFS)
-               set (_option_SOURCES_POST_UNDEFS "")
-       endif()
-       set (_contents "")
-       if (_option_PROLOGUE)
-               list (APPEND _contents ${_option_PROLOGUE})
-       endif()
-       if (_option_LANGUAGE AND _sourceFiles)
-               if ("${_option_LANGUAGE}" STREQUAL "CXX")
-                       list (APPEND _contents "#ifdef __cplusplus")
-               elseif ("${_option_LANGUAGE}" STREQUAL "C")
-                       list (APPEND _contents "#ifndef __cplusplus")
-               endif()
-       endif()
-       set (_compileUndefinitions "")
-       foreach (_sourceFile ${_sourceFiles})
-               cotire_get_source_compile_definitions(
-                       "${_option_CONFIGURATION}" "${_option_LANGUAGE}" "${_sourceFile}" _compileDefinitions
-                       ${_option_SOURCES_COMPILE_DEFINITIONS})
-               cotire_get_source_undefs("${_sourceFile}" COTIRE_UNITY_SOURCE_PRE_UNDEFS _sourcePreUndefs ${_option_SOURCES_PRE_UNDEFS})
-               cotire_get_source_undefs("${_sourceFile}" COTIRE_UNITY_SOURCE_POST_UNDEFS _sourcePostUndefs ${_option_SOURCES_POST_UNDEFS})
-               if (_option_PRE_UNDEFS)
-                       list (APPEND _compileUndefinitions ${_option_PRE_UNDEFS})
-               endif()
-               if (_sourcePreUndefs)
-                       list (APPEND _compileUndefinitions ${_sourcePreUndefs})
-               endif()
-               if (_compileUndefinitions)
-                       cotire_append_undefs(_contents ${_compileUndefinitions})
-                       set (_compileUndefinitions "")
-               endif()
-               if (_sourcePostUndefs)
-                       list (APPEND _compileUndefinitions ${_sourcePostUndefs})
-               endif()
-               if (_option_POST_UNDEFS)
-                       list (APPEND _compileUndefinitions ${_option_POST_UNDEFS})
-               endif()
-               foreach (_definition ${_compileDefinitions})
-                       if (_definition MATCHES "^([a-zA-Z0-9_]+)=(.+)$")
-                               list (APPEND _contents "#define ${CMAKE_MATCH_1} ${CMAKE_MATCH_2}")
-                               list (INSERT _compileUndefinitions 0 "${CMAKE_MATCH_1}")
-                       else()
-                               list (APPEND _contents "#define ${_definition}")
-                               list (INSERT _compileUndefinitions 0 "${_definition}")
-                       endif()
-               endforeach()
-               get_filename_component(_sourceFile "${_sourceFile}" ABSOLUTE)
-               if (WIN32)
-                       file (TO_NATIVE_PATH "${_sourceFile}" _sourceFile)
-               endif()
-               list (APPEND _contents "#include \"${_sourceFile}\"")
-       endforeach()
-       if (_compileUndefinitions)
-               cotire_append_undefs(_contents ${_compileUndefinitions})
-               set (_compileUndefinitions "")
-       endif()
-       if (_option_LANGUAGE AND _sourceFiles)
-               list (APPEND _contents "#endif")
-       endif()
-       if (_option_EPILOGUE)
-               list (APPEND _contents ${_option_EPILOGUE})
-       endif()
-       list (APPEND _contents "")
-       string (REPLACE ";" "\n" _contents "${_contents}")
-       if (COTIRE_VERBOSE)
-               message ("${_contents}")
-       endif()
-       cotire_write_file("${_option_LANGUAGE}" "${_unityFile}" "${_contents}" TRUE)
-endfunction()
-
-function (cotire_generate_prefix_header _prefixFile)
-       set(_options "")
-       set(_oneValueArgs LANGUAGE COMPILER_EXECUTABLE COMPILER_ID COMPILER_VERSION INCLUDE_SYSTEM_FLAG)
-       set(_multiValueArgs DEPENDS COMPILE_DEFINITIONS COMPILE_FLAGS
-               INCLUDE_DIRECTORIES SYSTEM_INCLUDE_DIRECTORIES IGNORE_PATH INCLUDE_PATH IGNORE_EXTENSIONS)
-       cmake_parse_arguments(_option "${_options}" "${_oneValueArgs}" "${_multiValueArgs}" ${ARGN})
-       if (_option_DEPENDS)
-               cotire_check_file_up_to_date(_prefixFileIsUpToDate "${_prefixFile}" ${_option_DEPENDS})
-               if (_prefixFileIsUpToDate)
-                       set (_unparsedLinesFile "${_prefixFile}.log")
-                       file (WRITE "${_unparsedLinesFile}" "")
-                       return()
-               endif()
-       endif()
-       set (_prologue "")
-       set (_epilogue "")
-       if (_option_COMPILER_ID MATCHES "Clang")
-               set (_prologue "#pragma clang system_header")
-       elseif (_option_COMPILER_ID MATCHES "GNU")
-               set (_prologue "#pragma GCC system_header")
-       elseif (_option_COMPILER_ID MATCHES "MSVC")
-               set (_prologue "#pragma warning(push, 0)")
-               set (_epilogue "#pragma warning(pop)")
-       elseif (_option_COMPILER_ID MATCHES "Intel")
-               # Intel compiler requires hdrstop pragma to stop generating PCH file
-               set (_epilogue "#pragma hdrstop")
-       endif()
-       set (_sourceFiles ${_option_UNPARSED_ARGUMENTS})
-       cotire_scan_includes(_selectedHeaders ${_sourceFiles}
-               LANGUAGE "${_option_LANGUAGE}"
-               COMPILER_EXECUTABLE "${_option_COMPILER_EXECUTABLE}"
-               COMPILER_ID "${_option_COMPILER_ID}"
-               COMPILER_VERSION "${_option_COMPILER_VERSION}"
-               COMPILE_DEFINITIONS ${_option_COMPILE_DEFINITIONS}
-               COMPILE_FLAGS ${_option_COMPILE_FLAGS}
-               INCLUDE_DIRECTORIES ${_option_INCLUDE_DIRECTORIES}
-               INCLUDE_SYSTEM_FLAG ${_option_INCLUDE_SYSTEM_FLAG}
-               SYSTEM_INCLUDE_DIRECTORIES ${_option_SYSTEM_INCLUDE_DIRECTORIES}
-               IGNORE_PATH ${_option_IGNORE_PATH}
-               INCLUDE_PATH ${_option_INCLUDE_PATH}
-               IGNORE_EXTENSIONS ${_option_IGNORE_EXTENSIONS}
-               UNPARSED_LINES _unparsedLines)
-       cotire_generate_unity_source("${_prefixFile}"
-               PROLOGUE ${_prologue} EPILOGUE ${_epilogue} LANGUAGE "${_option_LANGUAGE}" ${_selectedHeaders})
-       set (_unparsedLinesFile "${_prefixFile}.log")
-       if (_unparsedLines)
-               if (COTIRE_VERBOSE OR NOT _selectedHeaders)
-                       list (LENGTH _unparsedLines _skippedLineCount)
-                       file (RELATIVE_PATH _unparsedLinesFileRelPath "${CMAKE_BINARY_DIR}" "${_unparsedLinesFile}")
-                       message (STATUS "${_skippedLineCount} line(s) skipped, see ${_unparsedLinesFileRelPath}")
-               endif()
-               string (REPLACE ";" "\n" _unparsedLines "${_unparsedLines}")
-       endif()
-       file (WRITE "${_unparsedLinesFile}" "${_unparsedLines}")
-endfunction()
-
-function (cotire_add_makedep_flags _language _compilerID _compilerVersion _flagsVar)
-       set (_flags ${${_flagsVar}})
-       if (_compilerID MATCHES "MSVC")
-               # cl.exe options used
-               # /nologo suppresses display of sign-on banner
-               # /TC treat all files named on the command line as C source files
-               # /TP treat all files named on the command line as C++ source files
-               # /EP preprocess to stdout without #line directives
-               # /showIncludes list include files
-               set (_sourceFileTypeC "/TC")
-               set (_sourceFileTypeCXX "/TP")
-               if (_flags)
-                       # append to list
-                       list (APPEND _flags /nologo "${_sourceFileType${_language}}" /EP /showIncludes)
-               else()
-                       # return as a flag string
-                       set (_flags "${_sourceFileType${_language}} /EP /showIncludes")
-               endif()
-       elseif (_compilerID MATCHES "GNU")
-               # GCC options used
-               # -H print the name of each header file used
-               # -E invoke preprocessor
-               # -fdirectives-only do not expand macros, requires GCC >= 4.3
-               if (_flags)
-                       # append to list
-                       list (APPEND _flags -H -E)
-                       if (NOT "${_compilerVersion}" VERSION_LESS "4.3.0")
-                               list (APPEND _flags "-fdirectives-only")
-                       endif()
-               else()
-                       # return as a flag string
-                       set (_flags "-H -E")
-                       if (NOT "${_compilerVersion}" VERSION_LESS "4.3.0")
-                               set (_flags "${_flags} -fdirectives-only")
-                       endif()
-               endif()
-       elseif (_compilerID MATCHES "Clang")
-               # Clang options used
-               # -H print the name of each header file used
-               # -E invoke preprocessor
-               if (_flags)
-                       # append to list
-                       list (APPEND _flags -H -E)
-               else()
-                       # return as a flag string
-                       set (_flags "-H -E")
-               endif()
-       elseif (_compilerID MATCHES "Intel")
-               if (WIN32)
-                       # Windows Intel options used
-                       # /nologo do not display compiler version information
-                       # /QH display the include file order
-                       # /EP preprocess to stdout, omitting #line directives
-                       # /TC process all source or unrecognized file types as C source files
-                       # /TP process all source or unrecognized file types as C++ source files
-                       set (_sourceFileTypeC "/TC")
-                       set (_sourceFileTypeCXX "/TP")
-                       if (_flags)
-                               # append to list
-                               list (APPEND _flags /nologo "${_sourceFileType${_language}}" /EP /QH)
-                       else()
-                               # return as a flag string
-                               set (_flags "${_sourceFileType${_language}} /EP /QH")
-                       endif()
-               else()
-                       # Linux / Mac OS X Intel options used
-                       # -H print the name of each header file used
-                       # -EP preprocess to stdout, omitting #line directives
-                       # -Kc++ process all source or unrecognized file types as C++ source files
-                       if (_flags)
-                               # append to list
-                               if ("${_language}" STREQUAL "CXX")
-                                       list (APPEND _flags -Kc++)
-                               endif()
-                               list (APPEND _flags -H -EP)
-                       else()
-                               # return as a flag string
-                               if ("${_language}" STREQUAL "CXX")
-                                       set (_flags "-Kc++ ")
-                               endif()
-                               set (_flags "${_flags}-H -EP")
-                       endif()
-               endif()
-       else()
-               message (FATAL_ERROR "cotire: unsupported ${_language} compiler ${_compilerID} version ${_compilerVersion}.")
-       endif()
-       set (${_flagsVar} ${_flags} PARENT_SCOPE)
-endfunction()
-
-function (cotire_add_pch_compilation_flags _language _compilerID _compilerVersion _prefixFile _pchFile _hostFile _flagsVar)
-       set (_flags ${${_flagsVar}})
-       if (_compilerID MATCHES "MSVC")
-               file (TO_NATIVE_PATH "${_prefixFile}" _prefixFileNative)
-               file (TO_NATIVE_PATH "${_pchFile}" _pchFileNative)
-               file (TO_NATIVE_PATH "${_hostFile}" _hostFileNative)
-               # cl.exe options used
-               # /Yc creates a precompiled header file
-               # /Fp specifies precompiled header binary file name
-               # /FI forces inclusion of file
-               # /TC treat all files named on the command line as C source files
-               # /TP treat all files named on the command line as C++ source files
-               # /Zs syntax check only
-               set (_sourceFileTypeC "/TC")
-               set (_sourceFileTypeCXX "/TP")
-               if (_flags)
-                       # append to list
-                       list (APPEND _flags /nologo "${_sourceFileType${_language}}"
-                               "/Yc${_prefixFileNative}" "/Fp${_pchFileNative}" "/FI${_prefixFileNative}" /Zs "${_hostFileNative}")
-               else()
-                       # return as a flag string
-                       set (_flags "/Yc\"${_prefixFileNative}\" /Fp\"${_pchFileNative}\" /FI\"${_prefixFileNative}\"")
-               endif()
-       elseif (_compilerID MATCHES "GNU|Clang")
-               # GCC / Clang options used
-               # -x specify the source language
-               # -c compile but do not link
-               # -o place output in file
-               # note that we cannot use -w to suppress all warnings upon pre-compiling, because turning off a warning may
-               # alter compile flags as a side effect (e.g., -Wwrite-string implies -fconst-strings)
-               set (_xLanguage_C "c-header")
-               set (_xLanguage_CXX "c++-header")
-               if (_flags)
-                       # append to list
-                       list (APPEND _flags "-x" "${_xLanguage_${_language}}" "-c" "${_prefixFile}" -o "${_pchFile}")
-               else()
-                       # return as a flag string
-                       set (_flags "-x ${_xLanguage_${_language}} -c \"${_prefixFile}\" -o \"${_pchFile}\"")
-               endif()
-       elseif (_compilerID MATCHES "Intel")
-               if (WIN32)
-                       file (TO_NATIVE_PATH "${_prefixFile}" _prefixFileNative)
-                       file (TO_NATIVE_PATH "${_pchFile}" _pchFileNative)
-                       file (TO_NATIVE_PATH "${_hostFile}" _hostFileNative)
-                       # Windows Intel options used
-                       # /nologo do not display compiler version information
-                       # /Yc create a precompiled header (PCH) file
-                       # /Fp specify a path or file name for precompiled header files
-                       # /FI tells the preprocessor to include a specified file name as the header file
-                       # /TC process all source or unrecognized file types as C source files
-                       # /TP process all source or unrecognized file types as C++ source files
-                       # /Zs syntax check only
-                       # /Wpch-messages enable diagnostics related to pre-compiled headers (requires Intel XE 2013 Update 2)
-                       set (_sourceFileTypeC "/TC")
-                       set (_sourceFileTypeCXX "/TP")
-                       if (_flags)
-                               # append to list
-                               list (APPEND _flags /nologo "${_sourceFileType${_language}}"
-                                       "/Yc" "/Fp${_pchFileNative}" "/FI${_prefixFileNative}" /Zs "${_hostFileNative}")
-                               if (NOT "${_compilerVersion}" VERSION_LESS "13.1.0")
-                                       list (APPEND _flags "/Wpch-messages")
-                               endif()
-                       else()
-                               # return as a flag string
-                               set (_flags "/Yc /Fp\"${_pchFileNative}\" /FI\"${_prefixFileNative}\"")
-                               if (NOT "${_compilerVersion}" VERSION_LESS "13.1.0")
-                                       set (_flags "${_flags} /Wpch-messages")
-                               endif()
-                       endif()
-               else()
-                       # Linux / Mac OS X Intel options used
-                       # -pch-dir location for precompiled header files
-                       # -pch-create name of the precompiled header (PCH) to create
-                       # -Kc++ process all source or unrecognized file types as C++ source files
-                       # -fsyntax-only check only for correct syntax
-                       # -Wpch-messages enable diagnostics related to pre-compiled headers (requires Intel XE 2013 Update 2)
-                       get_filename_component(_pchDir "${_pchFile}" PATH)
-                       get_filename_component(_pchName "${_pchFile}" NAME)
-                       set (_xLanguage_C "c-header")
-                       set (_xLanguage_CXX "c++-header")
-                       if (_flags)
-                               # append to list
-                               if ("${_language}" STREQUAL "CXX")
-                                       list (APPEND _flags -Kc++)
-                               endif()
-                               list (APPEND _flags "-include" "${_prefixFile}" "-pch-dir" "${_pchDir}" "-pch-create" "${_pchName}" "-fsyntax-only" "${_hostFile}")
-                               if (NOT "${_compilerVersion}" VERSION_LESS "13.1.0")
-                                       list (APPEND _flags "-Wpch-messages")
-                               endif()
-                       else()
-                               # return as a flag string
-                               set (_flags "-include \"${_prefixFile}\" -pch-dir \"${_pchDir}\" -pch-create \"${_pchName}\"")
-                               if (NOT "${_compilerVersion}" VERSION_LESS "13.1.0")
-                                       set (_flags "${_flags} -Wpch-messages")
-                               endif()
-                       endif()
-               endif()
-       else()
-               message (FATAL_ERROR "cotire: unsupported ${_language} compiler ${_compilerID} version ${_compilerVersion}.")
-       endif()
-       set (${_flagsVar} ${_flags} PARENT_SCOPE)
-endfunction()
-
-function (cotire_add_prefix_pch_inclusion_flags _language _compilerID _compilerVersion _prefixFile _pchFile _flagsVar)
-       set (_flags ${${_flagsVar}})
-       if (_compilerID MATCHES "MSVC")
-               file (TO_NATIVE_PATH "${_prefixFile}" _prefixFileNative)
-               # cl.exe options used
-               # /Yu uses a precompiled header file during build
-               # /Fp specifies precompiled header binary file name
-               # /FI forces inclusion of file
-               if (_pchFile)
-                       file (TO_NATIVE_PATH "${_pchFile}" _pchFileNative)
-                       if (_flags)
-                               # append to list
-                               list (APPEND _flags "/Yu${_prefixFileNative}" "/Fp${_pchFileNative}" "/FI${_prefixFileNative}")
-                       else()
-                               # return as a flag string
-                               set (_flags "/Yu\"${_prefixFileNative}\" /Fp\"${_pchFileNative}\" /FI\"${_prefixFileNative}\"")
-                       endif()
-               else()
-                       # no precompiled header, force inclusion of prefix header
-                       if (_flags)
-                               # append to list
-                               list (APPEND _flags "/FI${_prefixFileNative}")
-                       else()
-                               # return as a flag string
-                               set (_flags "/FI\"${_prefixFileNative}\"")
-                       endif()
-               endif()
-       elseif (_compilerID MATCHES "GNU")
-               # GCC options used
-               # -include process include file as the first line of the primary source file
-               # -Winvalid-pch warns if precompiled header is found but cannot be used
-               # note: ccache requires the -include flag to be used in order to process precompiled header correctly
-               if (_flags)
-                       # append to list
-                       list (APPEND _flags "-Winvalid-pch" "-include" "${_prefixFile}")
-               else()
-                       # return as a flag string
-                       set (_flags "-Winvalid-pch -include \"${_prefixFile}\"")
-               endif()
-       elseif (_compilerID MATCHES "Clang")
-               # Clang options used
-               # -include process include file as the first line of the primary source file
-               # -include-pch include precompiled header file
-               # -Qunused-arguments don't emit warning for unused driver arguments
-               # note: ccache requires the -include flag to be used in order to process precompiled header correctly
-               if (_flags)
-                       # append to list
-                       list (APPEND _flags "-Qunused-arguments" "-include" "${_prefixFile}")
-               else()
-                       # return as a flag string
-                       set (_flags "-Qunused-arguments -include \"${_prefixFile}\"")
-               endif()
-       elseif (_compilerID MATCHES "Intel")
-               if (WIN32)
-                       file (TO_NATIVE_PATH "${_prefixFile}" _prefixFileNative)
-                       # Windows Intel options used
-                       # /Yu use a precompiled header (PCH) file
-                       # /Fp specify a path or file name for precompiled header files
-                       # /FI tells the preprocessor to include a specified file name as the header file
-                       # /Wpch-messages enable diagnostics related to pre-compiled headers (requires Intel XE 2013 Update 2)
-                       if (_pchFile)
-                               file (TO_NATIVE_PATH "${_pchFile}" _pchFileNative)
-                               if (_flags)
-                                       # append to list
-                                       list (APPEND _flags "/Yu" "/Fp${_pchFileNative}" "/FI${_prefixFileNative}")
-                                       if (NOT "${_compilerVersion}" VERSION_LESS "13.1.0")
-                                               list (APPEND _flags "/Wpch-messages")
-                                       endif()
-                               else()
-                                       # return as a flag string
-                                       set (_flags "/Yu /Fp\"${_pchFileNative}\" /FI\"${_prefixFileNative}\"")
-                                       if (NOT "${_compilerVersion}" VERSION_LESS "13.1.0")
-                                               set (_flags "${_flags} /Wpch-messages")
-                                       endif()
-                               endif()
-                       else()
-                               # no precompiled header, force inclusion of prefix header
-                               if (_flags)
-                                       # append to list
-                                       list (APPEND _flags "/FI${_prefixFileNative}")
-                               else()
-                                       # return as a flag string
-                                       set (_flags "/FI\"${_prefixFileNative}\"")
-                               endif()
-                       endif()
-               else()
-                       # Linux / Mac OS X Intel options used
-                       # -pch-dir location for precompiled header files
-                       # -pch-use name of the precompiled header (PCH) to use
-                       # -include process include file as the first line of the primary source file
-                       # -Wpch-messages enable diagnostics related to pre-compiled headers (requires Intel XE 2013 Update 2)
-                       if (_pchFile)
-                               get_filename_component(_pchDir "${_pchFile}" PATH)
-                               get_filename_component(_pchName "${_pchFile}" NAME)
-                               if (_flags)
-                                       # append to list
-                                       list (APPEND _flags "-include" "${_prefixFile}" "-pch-dir" "${_pchDir}" "-pch-use" "${_pchName}")
-                                       if (NOT "${_compilerVersion}" VERSION_LESS "13.1.0")
-                                               list (APPEND _flags "-Wpch-messages")
-                                       endif()
-                               else()
-                                       # return as a flag string
-                                       set (_flags "-include \"${_prefixFile}\" -pch-dir \"${_pchDir}\" -pch-use \"${_pchName}\"")
-                                       if (NOT "${_compilerVersion}" VERSION_LESS "13.1.0")
-                                               set (_flags "${_flags} -Wpch-messages")
-                                       endif()
-                               endif()
-                       else()
-                               # no precompiled header, force inclusion of prefix header
-                               if (_flags)
-                                       # append to list
-                                       list (APPEND _flags "-include" "${_prefixFile}")
-                               else()
-                                       # return as a flag string
-                                       set (_flags "-include \"${_prefixFile}\"")
-                               endif()
-                       endif()
-               endif()
-       else()
-               message (FATAL_ERROR "cotire: unsupported ${_language} compiler ${_compilerID} version ${_compilerVersion}.")
-       endif()
-       set (${_flagsVar} ${_flags} PARENT_SCOPE)
-endfunction()
-
-function (cotire_precompile_prefix_header _prefixFile _pchFile _hostFile)
-       set(_options "")
-       set(_oneValueArgs COMPILER_EXECUTABLE COMPILER_ID COMPILER_VERSION INCLUDE_SYSTEM_FLAG LANGUAGE)
-       set(_multiValueArgs COMPILE_DEFINITIONS COMPILE_FLAGS INCLUDE_DIRECTORIES SYSTEM_INCLUDE_DIRECTORIES SYS)
-       cmake_parse_arguments(_option "${_options}" "${_oneValueArgs}" "${_multiValueArgs}" ${ARGN})
-       if (NOT _option_LANGUAGE)
-               set (_option_LANGUAGE "CXX")
-       endif()
-       if (NOT _option_COMPILER_ID)
-               set (_option_COMPILER_ID "${CMAKE_${_option_LANGUAGE}_ID}")
-       endif()
-       cotire_init_compile_cmd(_cmd "${_option_LANGUAGE}" "${_option_COMPILER_EXECUTABLE}" "${_option_COMPILER_ARG1}")
-       cotire_add_definitions_to_cmd(_cmd "${_option_LANGUAGE}" ${_option_COMPILE_DEFINITIONS})
-       cotire_add_compile_flags_to_cmd(_cmd ${_option_COMPILE_FLAGS})
-       cotire_add_includes_to_cmd(_cmd "${_option_LANGUAGE}" "${_option_INCLUDE_SYSTEM_FLAG}" _option_INCLUDE_DIRECTORIES _option_SYSTEM_INCLUDE_DIRECTORIES)
-       cotire_add_frameworks_to_cmd(_cmd "${_option_LANGUAGE}" ${_option_INCLUDE_DIRECTORIES})
-       cotire_add_pch_compilation_flags(
-               "${_option_LANGUAGE}" "${_option_COMPILER_ID}" "${_option_COMPILER_VERSION}"
-               "${_prefixFile}" "${_pchFile}" "${_hostFile}" _cmd)
-       if (COTIRE_VERBOSE)
-               message (STATUS "execute_process: ${_cmd}")
-       endif()
-       if (_option_COMPILER_ID MATCHES "MSVC")
-               if (COTIRE_DEBUG)
-                       message (STATUS "clearing VS_UNICODE_OUTPUT")
-               endif()
-               # cl.exe messes with the output streams unless the environment variable VS_UNICODE_OUTPUT is cleared
-               unset (ENV{VS_UNICODE_OUTPUT})
-       endif()
-       execute_process(
-               COMMAND ${_cmd}
-               WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
-               RESULT_VARIABLE _result)
-       if (_result)
-               message (FATAL_ERROR "cotire: error ${_result} precompiling ${_prefixFile}.")
-       endif()
-endfunction()
-
-function (cotire_check_precompiled_header_support _language _targetSourceDir _target _msgVar)
-       set (_unsupportedCompiler
-               "Precompiled headers not supported for ${_language} compiler ${CMAKE_${_language}_COMPILER_ID}")
-       if (CMAKE_${_language}_COMPILER_ID MATCHES "MSVC")
-               # supported since Visual Studio C++ 6.0
-               # and CMake does not support an earlier version
-               set (${_msgVar} "" PARENT_SCOPE)
-       elseif (CMAKE_${_language}_COMPILER_ID MATCHES "GNU")
-               # GCC PCH support requires version >= 3.4
-               cotire_determine_compiler_version("${_language}" COTIRE_${_language}_COMPILER)
-               if ("${COTIRE_${_language}_COMPILER_VERSION}" MATCHES ".+" AND
-                       "${COTIRE_${_language}_COMPILER_VERSION}" VERSION_LESS "3.4.0")
-                       set (${_msgVar} "${_unsupportedCompiler} version ${COTIRE_${_language}_COMPILER_VERSION}." PARENT_SCOPE)
-               else()
-                       set (${_msgVar} "" PARENT_SCOPE)
-               endif()
-       elseif (CMAKE_${_language}_COMPILER_ID MATCHES "Clang")
-               # all Clang versions have PCH support
-               set (${_msgVar} "" PARENT_SCOPE)
-       elseif (CMAKE_${_language}_COMPILER_ID MATCHES "Intel")
-               # Intel PCH support requires version >= 8.0.0
-               cotire_determine_compiler_version("${_language}" COTIRE_${_language}_COMPILER)
-               if ("${COTIRE_${_language}_COMPILER_VERSION}" MATCHES ".+" AND
-                       "${COTIRE_${_language}_COMPILER_VERSION}" VERSION_LESS "8.0.0")
-                       set (${_msgVar} "${_unsupportedCompiler} version ${COTIRE_${_language}_COMPILER_VERSION}." PARENT_SCOPE)
-               else()
-                       set (${_msgVar} "" PARENT_SCOPE)
-               endif()
-       else()
-               set (${_msgVar} "${_unsupportedCompiler}." PARENT_SCOPE)
-       endif()
-       if (CMAKE_${_language}_COMPILER MATCHES "ccache")
-               if (NOT "$ENV{CCACHE_SLOPPINESS}" MATCHES "time_macros")
-                       set (${_msgVar}
-                               "ccache requires the environment variable CCACHE_SLOPPINESS to be set to time_macros."
-                               PARENT_SCOPE)
-               endif()
-       endif()
-       if (APPLE)
-               # PCH compilation not supported by GCC / Clang for multi-architecture builds (e.g., i386, x86_64)
-               if (CMAKE_CONFIGURATION_TYPES)
-                       set (_configs ${CMAKE_CONFIGURATION_TYPES})
-               elseif (CMAKE_BUILD_TYPE)
-                       set (_configs ${CMAKE_BUILD_TYPE})
-               else()
-                       set (_configs "None")
-               endif()
-               foreach (_config ${_configs})
-                       set (_targetFlags "")
-                       cotire_get_target_compile_flags("${_config}" "${_language}" "${_targetSourceDir}" "${_target}" _targetFlags)
-                       cotire_filter_compile_flags("${_language}" "arch" _architectures _ignore ${_targetFlags})
-                       list (LENGTH _architectures _numberOfArchitectures)
-                       if (_numberOfArchitectures GREATER 1)
-                               string (REPLACE ";" ", " _architectureStr "${_architectures}")
-                               set (${_msgVar}
-                                       "Precompiled headers not supported on Darwin for multi-architecture builds (${_architectureStr})."
-                                       PARENT_SCOPE)
-                               break()
-                       endif()
-               endforeach()
-       endif()
-endfunction()
-
-macro (cotire_get_intermediate_dir _cotireDir)
-       get_filename_component(${_cotireDir} "${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/${COTIRE_INTDIR}" ABSOLUTE)
-endmacro()
-
-macro (cotire_setup_file_extension_variables)
-       set (_unityFileExt_C ".c")
-       set (_unityFileExt_CXX ".cxx")
-       set (_prefixFileExt_C ".h")
-       set (_prefixFileExt_CXX ".hxx")
-       set (_prefixSourceFileExt_C ".c")
-       set (_prefixSourceFileExt_CXX ".cxx")
-endmacro()
-
-function (cotire_make_single_unity_source_file_path _language _target _unityFileVar)
-       cotire_setup_file_extension_variables()
-       if (NOT DEFINED _unityFileExt_${_language})
-               set (${_unityFileVar} "" PARENT_SCOPE)
-               return()
-       endif()
-       set (_unityFileBaseName "${_target}_${_language}${COTIRE_UNITY_SOURCE_FILENAME_SUFFIX}")
-       set (_unityFileName "${_unityFileBaseName}${_unityFileExt_${_language}}")
-       cotire_get_intermediate_dir(_baseDir)
-       set (_unityFile "${_baseDir}/${_unityFileName}")
-       set (${_unityFileVar} "${_unityFile}" PARENT_SCOPE)
-       if (COTIRE_DEBUG)
-               message(STATUS "${_unityFile}")
-       endif()
-endfunction()
-
-function (cotire_make_unity_source_file_paths _language _target _maxIncludes _unityFilesVar)
-       cotire_setup_file_extension_variables()
-       if (NOT DEFINED _unityFileExt_${_language})
-               set (${_unityFileVar} "" PARENT_SCOPE)
-               return()
-       endif()
-       set (_unityFileBaseName "${_target}_${_language}${COTIRE_UNITY_SOURCE_FILENAME_SUFFIX}")
-       cotire_get_intermediate_dir(_baseDir)
-       set (_startIndex 0)
-       set (_index 0)
-       set (_unityFiles "")
-       set (_sourceFiles ${ARGN})
-       foreach (_sourceFile ${_sourceFiles})
-               get_source_file_property(_startNew "${_sourceFile}" COTIRE_START_NEW_UNITY_SOURCE)
-               math (EXPR _unityFileCount "${_index} - ${_startIndex}")
-               if (_startNew OR (_maxIncludes GREATER 0 AND NOT _unityFileCount LESS _maxIncludes))
-                       if (_index GREATER 0)
-                               # start new unity file segment
-                               math (EXPR _endIndex "${_index} - 1")
-                               set (_unityFileName "${_unityFileBaseName}_${_startIndex}_${_endIndex}${_unityFileExt_${_language}}")
-                               list (APPEND _unityFiles "${_baseDir}/${_unityFileName}")
-                       endif()
-                       set (_startIndex ${_index})
-               endif()
-               math (EXPR _index "${_index} + 1")
-       endforeach()
-       list (LENGTH _sourceFiles _numberOfSources)
-       if (_startIndex EQUAL 0)
-               # there is only a single unity file
-               cotire_make_single_unity_source_file_path(${_language} ${_target} _unityFiles)
-       elseif (_startIndex LESS _numberOfSources)
-               # end with final unity file segment
-               math (EXPR _endIndex "${_index} - 1")
-               set (_unityFileName "${_unityFileBaseName}_${_startIndex}_${_endIndex}${_unityFileExt_${_language}}")
-               list (APPEND _unityFiles "${_baseDir}/${_unityFileName}")
-       endif()
-       set (${_unityFilesVar} ${_unityFiles} PARENT_SCOPE)
-       if (COTIRE_DEBUG)
-               message(STATUS "${_unityFiles}")
-       endif()
-endfunction()
-
-function (cotire_unity_to_prefix_file_path _language _target _unityFile _prefixFileVar)
-       cotire_setup_file_extension_variables()
-       if (NOT DEFINED _unityFileExt_${_language})
-               set (${_prefixFileVar} "" PARENT_SCOPE)
-               return()
-       endif()
-       set (_unityFileBaseName "${_target}_${_language}${COTIRE_UNITY_SOURCE_FILENAME_SUFFIX}")
-       set (_prefixFileBaseName "${_target}_${_language}${COTIRE_PREFIX_HEADER_FILENAME_SUFFIX}")
-       string (REPLACE "${_unityFileBaseName}" "${_prefixFileBaseName}" _prefixFile "${_unityFile}")
-       string (REGEX REPLACE "${_unityFileExt_${_language}}$" "${_prefixFileExt_${_language}}" _prefixFile "${_prefixFile}")
-       set (${_prefixFileVar} "${_prefixFile}" PARENT_SCOPE)
-endfunction()
-
-function (cotire_prefix_header_to_source_file_path _language _prefixHeaderFile _prefixSourceFileVar)
-       cotire_setup_file_extension_variables()
-       if (NOT DEFINED _prefixSourceFileExt_${_language})
-               set (${_prefixSourceFileVar} "" PARENT_SCOPE)
-               return()
-       endif()
-       string (REGEX REPLACE "${_prefixFileExt_${_language}}$" "${_prefixSourceFileExt_${_language}}" _prefixSourceFile "${_prefixHeaderFile}")
-       set (${_prefixSourceFileVar} "${_prefixSourceFile}" PARENT_SCOPE)
-endfunction()
-
-function (cotire_make_prefix_file_name _language _target _prefixFileBaseNameVar _prefixFileNameVar)
-       cotire_setup_file_extension_variables()
-       if (NOT _language)
-               set (_prefixFileBaseName "${_target}${COTIRE_PREFIX_HEADER_FILENAME_SUFFIX}")
-               set (_prefixFileName "${_prefixFileBaseName}${_prefixFileExt_C}")
-       elseif (DEFINED _prefixFileExt_${_language})
-               set (_prefixFileBaseName "${_target}_${_language}${COTIRE_PREFIX_HEADER_FILENAME_SUFFIX}")
-               set (_prefixFileName "${_prefixFileBaseName}${_prefixFileExt_${_language}}")
-       else()
-               set (_prefixFileBaseName "")
-               set (_prefixFileName "")
-       endif()
-       set (${_prefixFileBaseNameVar} "${_prefixFileBaseName}" PARENT_SCOPE)
-       set (${_prefixFileNameVar} "${_prefixFileName}" PARENT_SCOPE)
-endfunction()
-
-function (cotire_make_prefix_file_path _language _target _prefixFileVar)
-       cotire_make_prefix_file_name("${_language}" "${_target}" _prefixFileBaseName _prefixFileName)
-       set (${_prefixFileVar} "" PARENT_SCOPE)
-       if (_prefixFileName)
-               if (NOT _language)
-                       set (_language "C")
-               endif()
-               if (MSVC OR CMAKE_${_language}_COMPILER_ID MATCHES "GNU|Clang|Intel")
-                       cotire_get_intermediate_dir(_baseDir)
-                       set (${_prefixFileVar} "${_baseDir}/${_prefixFileName}" PARENT_SCOPE)
-               endif()
-       endif()
-endfunction()
-
-function (cotire_make_pch_file_path _language _targetSourceDir _target _pchFileVar)
-       cotire_make_prefix_file_name("${_language}" "${_target}" _prefixFileBaseName _prefixFileName)
-       set (${_pchFileVar} "" PARENT_SCOPE)
-       if (_prefixFileBaseName AND _prefixFileName)
-               cotire_check_precompiled_header_support("${_language}" "${_targetSourceDir}" "${_target}" _msg)
-               if (NOT _msg)
-                       if (XCODE)
-                               # For Xcode, we completely hand off the compilation of the prefix header to the IDE
-                               return()
-                       endif()
-                       cotire_get_intermediate_dir(_baseDir)
-                       if (CMAKE_${_language}_COMPILER_ID MATCHES "MSVC")
-                               # MSVC uses the extension .pch added to the prefix header base name
-                               set (${_pchFileVar} "${_baseDir}/${_prefixFileBaseName}.pch" PARENT_SCOPE)
-                       elseif (CMAKE_${_language}_COMPILER_ID MATCHES "Clang")
-                               # Clang looks for a precompiled header corresponding to the prefix header with the extension .pch appended
-                               set (${_pchFileVar} "${_baseDir}/${_prefixFileName}.pch" PARENT_SCOPE)
-                       elseif (CMAKE_${_language}_COMPILER_ID MATCHES "GNU")
-                               # GCC looks for a precompiled header corresponding to the prefix header with the extension .gch appended
-                               set (${_pchFileVar} "${_baseDir}/${_prefixFileName}.gch" PARENT_SCOPE)
-                       elseif (CMAKE_${_language}_COMPILER_ID MATCHES "Intel")
-                               # Intel uses the extension .pchi added to the prefix header base name
-                               set (${_pchFileVar} "${_baseDir}/${_prefixFileBaseName}.pchi" PARENT_SCOPE)
-                       endif()
-               endif()
-       endif()
-endfunction()
-
-function (cotire_select_unity_source_files _unityFile _sourcesVar)
-       set (_sourceFiles ${ARGN})
-       if (_sourceFiles AND "${_unityFile}" MATCHES "${COTIRE_UNITY_SOURCE_FILENAME_SUFFIX}_([0-9]+)_([0-9]+)")
-               set (_startIndex ${CMAKE_MATCH_1})
-               set (_endIndex ${CMAKE_MATCH_2})
-               list (LENGTH _sourceFiles _numberOfSources)
-               if (NOT _startIndex LESS _numberOfSources)
-                       math (EXPR _startIndex "${_numberOfSources} - 1")
-               endif()
-               if (NOT _endIndex LESS _numberOfSources)
-                       math (EXPR _endIndex "${_numberOfSources} - 1")
-               endif()
-               set (_files "")
-               foreach (_index RANGE ${_startIndex} ${_endIndex})
-                       list (GET _sourceFiles ${_index} _file)
-                       list (APPEND _files "${_file}")
-               endforeach()
-       else()
-               set (_files ${_sourceFiles})
-       endif()
-       set (${_sourcesVar} ${_files} PARENT_SCOPE)
-endfunction()
-
-function (cotire_get_unity_source_dependencies _language _target _dependencySourcesVar)
-       set (_dependencySources "")
-       # depend on target's generated source files
-       cotire_get_objects_with_property_on(_generatedSources GENERATED SOURCE ${ARGN})
-       if (_generatedSources)
-               # but omit all generated source files that have the COTIRE_EXCLUDED property set to true
-               cotire_get_objects_with_property_on(_excludedGeneratedSources COTIRE_EXCLUDED SOURCE ${_generatedSources})
-               if (_excludedGeneratedSources)
-                       list (REMOVE_ITEM _generatedSources ${_excludedGeneratedSources})
-               endif()
-               # and omit all generated source files that have the COTIRE_DEPENDENCY property set to false explicitly
-               cotire_get_objects_with_property_off(_excludedNonDependencySources COTIRE_DEPENDENCY SOURCE ${_generatedSources})
-               if (_excludedNonDependencySources)
-                       list (REMOVE_ITEM _generatedSources ${_excludedNonDependencySources})
-               endif()
-               if (_generatedSources)
-                       list (APPEND _dependencySources ${_generatedSources})
-               endif()
-       endif()
-       if (COTIRE_DEBUG AND _dependencySources)
-               message (STATUS "${_language} ${_target} unity source depends on ${_dependencySources}")
-       endif()
-       set (${_dependencySourcesVar} ${_dependencySources} PARENT_SCOPE)
-endfunction()
-
-function (cotire_get_prefix_header_dependencies _language _target _dependencySourcesVar)
-       # depend on target source files marked with custom COTIRE_DEPENDENCY property
-       set (_dependencySources "")
-       cotire_get_objects_with_property_on(_dependencySources COTIRE_DEPENDENCY SOURCE ${ARGN})
-       if (CMAKE_${_language}_COMPILER_ID MATCHES "GNU|Clang")
-               # GCC and clang raise a fatal error if a file is not found during preprocessing
-               # thus we depend on target's generated source files for prefix header generation
-               cotire_get_objects_with_property_on(_generatedSources GENERATED SOURCE ${ARGN})
-               if (_generatedSources)
-                       list (APPEND _dependencySources ${_generatedSources})
-               endif()
-       endif()
-       if (COTIRE_DEBUG AND _dependencySources)
-               message (STATUS "${_language} ${_target} prefix header DEPENDS ${_dependencySources}")
-       endif()
-       set (${_dependencySourcesVar} ${_dependencySources} PARENT_SCOPE)
-endfunction()
-
-function (cotire_generate_target_script _language _configurations _targetSourceDir _targetBinaryDir _target _targetScriptVar _targetConfigScriptVar)
-       set (COTIRE_TARGET_SOURCES ${ARGN})
-       cotire_get_prefix_header_dependencies(${_language} ${_target} COTIRE_TARGET_PREFIX_DEPENDS ${COTIRE_TARGET_SOURCES})
-       cotire_get_unity_source_dependencies(${_language} ${_target} COTIRE_TARGET_UNITY_DEPENDS ${COTIRE_TARGET_SOURCES})
-       # set up variables to be configured
-       set (COTIRE_TARGET_LANGUAGE "${_language}")
-       cotire_determine_compiler_version("${COTIRE_TARGET_LANGUAGE}" COTIRE_${_language}_COMPILER)
-       get_target_property(COTIRE_TARGET_IGNORE_PATH ${_target} COTIRE_PREFIX_HEADER_IGNORE_PATH)
-       cotire_add_sys_root_paths(COTIRE_TARGET_IGNORE_PATH)
-       get_target_property(COTIRE_TARGET_INCLUDE_PATH ${_target} COTIRE_PREFIX_HEADER_INCLUDE_PATH)
-       cotire_add_sys_root_paths(COTIRE_TARGET_INCLUDE_PATH)
-       get_target_property(COTIRE_TARGET_PRE_UNDEFS ${_target} COTIRE_UNITY_SOURCE_PRE_UNDEFS)
-       get_target_property(COTIRE_TARGET_POST_UNDEFS ${_target} COTIRE_UNITY_SOURCE_POST_UNDEFS)
-       get_target_property(COTIRE_TARGET_MAXIMUM_NUMBER_OF_INCLUDES ${_target} COTIRE_UNITY_SOURCE_MAXIMUM_NUMBER_OF_INCLUDES)
-       cotire_get_source_files_undefs(COTIRE_UNITY_SOURCE_PRE_UNDEFS COTIRE_TARGET_SOURCES_PRE_UNDEFS ${COTIRE_TARGET_SOURCES})
-       cotire_get_source_files_undefs(COTIRE_UNITY_SOURCE_POST_UNDEFS COTIRE_TARGET_SOURCES_POST_UNDEFS ${COTIRE_TARGET_SOURCES})
-       string (STRIP "${CMAKE_INCLUDE_SYSTEM_FLAG_${_language}}" COTIRE_INCLUDE_SYSTEM_FLAG)
-       set (COTIRE_TARGET_CONFIGURATION_TYPES "${_configurations}")
-       foreach (_config ${_configurations})
-               string (TOUPPER "${_config}" _upperConfig)
-               cotire_get_target_include_directories(
-                       "${_config}" "${_language}" "${_targetSourceDir}" "${_targetBinaryDir}" "${_target}" COTIRE_TARGET_INCLUDE_DIRECTORIES_${_upperConfig} COTIRE_TARGET_SYSTEM_INCLUDE_DIRECTORIES_${_upperConfig})
-               cotire_get_target_compile_definitions(
-                       "${_config}" "${_language}" "${_targetSourceDir}" "${_target}" COTIRE_TARGET_COMPILE_DEFINITIONS_${_upperConfig})
-               cotire_get_target_compiler_flags(
-                       "${_config}" "${_language}" "${_targetSourceDir}" "${_target}" COTIRE_TARGET_COMPILE_FLAGS_${_upperConfig})
-               cotire_get_source_files_compile_definitions(
-                       "${_config}" "${_language}" COTIRE_TARGET_SOURCES_COMPILE_DEFINITIONS_${_upperConfig} ${COTIRE_TARGET_SOURCES})
-       endforeach()
-       get_cmake_property(_vars VARIABLES)
-       string (REGEX MATCHALL "COTIRE_[A-Za-z0-9_]+" _matchVars "${_vars}")
-       # remove COTIRE_VERBOSE which is passed as a CMake define on command line
-       list (REMOVE_ITEM _matchVars COTIRE_VERBOSE)
-       set (_contents "")
-       set (_contentsHasGeneratorExpressions FALSE)
-       foreach (_var IN LISTS _matchVars ITEMS
-               MSVC CMAKE_GENERATOR CMAKE_BUILD_TYPE CMAKE_CONFIGURATION_TYPES
-               CMAKE_${_language}_COMPILER_ID CMAKE_${_language}_COMPILER CMAKE_${_language}_COMPILER_ARG1
-               CMAKE_${_language}_SOURCE_FILE_EXTENSIONS)
-               if (DEFINED ${_var})
-                       string (REPLACE "\"" "\\\"" _value "${${_var}}")
-                       set (_contents "${_contents}set (${_var} \"${_value}\")\n")
-                       if (NOT _contentsHasGeneratorExpressions)
-                               if ("${_value}" MATCHES "\\$<.*>")
-                                       set (_contentsHasGeneratorExpressions TRUE)
-                               endif()
-                       endif()
-               endif()
-       endforeach()
-       get_filename_component(_moduleName "${COTIRE_CMAKE_MODULE_FILE}" NAME)
-       set (_targetCotireScript "${CMAKE_CURRENT_BINARY_DIR}/${_target}_${_language}_${_moduleName}")
-       cotire_write_file("CMAKE" "${_targetCotireScript}" "${_contents}" FALSE)
-       if (_contentsHasGeneratorExpressions)
-               # use file(GENERATE ...) to expand generator expressions in the target script at CMake generate-time
-               if (NOT CMAKE_VERSION VERSION_LESS "2.8.12")
-                       # the file(GENERATE ...) command requires cmake 2.8.12 or later
-                       set (_configNameOrNoneGeneratorExpression "$<$<CONFIG:>:None>$<$<NOT:$<CONFIG:>>:$<CONFIGURATION>>")
-                       set (_targetCotireConfigScript "${CMAKE_CURRENT_BINARY_DIR}/${_target}_${_language}_${_configNameOrNoneGeneratorExpression}_${_moduleName}")
-                       file (GENERATE OUTPUT "${_targetCotireConfigScript}" INPUT "${_targetCotireScript}")
-               else()
-                       message (WARNING "cotire: generator expression used in target ${_target}. This requires CMake 2.8.12 or later.")
-                       set (_targetCotireConfigScript "${_targetCotireScript}")
-               endif()
-       else()
-               set (_targetCotireConfigScript "${_targetCotireScript}")
-       endif()
-       set (${_targetScriptVar} "${_targetCotireScript}" PARENT_SCOPE)
-       set (${_targetConfigScriptVar} "${_targetCotireConfigScript}" PARENT_SCOPE)
-endfunction()
-
-function (cotire_setup_pch_file_compilation _language _target _targetSourceDir _targetScript _prefixFile _pchFile)
-       set (_sourceFiles ${ARGN})
-       if (CMAKE_${_language}_COMPILER_ID MATCHES "MSVC|Intel")
-               # for Visual Studio and Intel, we attach the precompiled header compilation to the first source file
-               # the remaining files include the precompiled header, see cotire_setup_pch_file_inclusion
-               if (_sourceFiles)
-                       file (TO_NATIVE_PATH "${_prefixFile}" _prefixFileNative)
-                       file (TO_NATIVE_PATH "${_pchFile}" _pchFileNative)
-                       list (GET _sourceFiles 0 _hostFile)
-                       set (_flags "")
-                       cotire_determine_compiler_version("${_language}" COTIRE_${_language}_COMPILER)
-                       cotire_add_pch_compilation_flags(
-                               "${_language}" "${CMAKE_${_language}_COMPILER_ID}" "${COTIRE_${_language}_COMPILER_VERSION}"
-                               "${_prefixFile}" "${_pchFile}" "${_hostFile}" _flags)
-                       set_property (SOURCE ${_hostFile} APPEND_STRING PROPERTY COMPILE_FLAGS " ${_flags} ")
-                       set_property (SOURCE ${_hostFile} APPEND PROPERTY OBJECT_OUTPUTS "${_pchFile}")
-                       # make first source file depend on prefix header
-                       set_property (SOURCE ${_hostFile} APPEND PROPERTY OBJECT_DEPENDS "${_prefixFile}")
-                       # mark first source file as cotired to prevent it from being used in another cotired target
-                       set_property (SOURCE ${_hostFile} PROPERTY COTIRE_TARGET "${_target}")
-               endif()
-       elseif ("${CMAKE_GENERATOR}" MATCHES "Makefiles|Ninja")
-               # for makefile based generator, we add a custom command to precompile the prefix header
-               if (_targetScript)
-                       cotire_set_cmd_to_prologue(_cmds)
-                       list (GET _sourceFiles 0 _hostFile)
-                       list (APPEND _cmds -P "${COTIRE_CMAKE_MODULE_FILE}" "precompile" "${_targetScript}" "${_prefixFile}" "${_pchFile}" "${_hostFile}")
-                       file (RELATIVE_PATH _pchFileRelPath "${CMAKE_BINARY_DIR}" "${_pchFile}")
-                       if (COTIRE_DEBUG)
-                               message (STATUS "add_custom_command: OUTPUT ${_pchFile} ${_cmds} DEPENDS ${_prefixFile} IMPLICIT_DEPENDS ${_language} ${_prefixFile}")
-                       endif()
-                       set_property (SOURCE "${_pchFile}" PROPERTY GENERATED TRUE)
-                       add_custom_command(
-                               OUTPUT "${_pchFile}"
-                               COMMAND ${_cmds}
-                               DEPENDS "${_prefixFile}"
-                               IMPLICIT_DEPENDS ${_language} "${_prefixFile}"
-                               WORKING_DIRECTORY "${_targetSourceDir}"
-                               COMMENT "Building ${_language} precompiled header ${_pchFileRelPath}" VERBATIM)
-               endif()
-       endif()
-endfunction()
-
-function (cotire_setup_pch_file_inclusion _language _target _wholeTarget _prefixFile _pchFile)
-       set (_sourceFiles ${ARGN})
-       if (CMAKE_${_language}_COMPILER_ID MATCHES "MSVC|Intel")
-               # for Visual Studio and Intel, we include the precompiled header in all but the first source file
-               # the first source file does the precompiled header compilation, see cotire_setup_pch_file_compilation
-               list (LENGTH _sourceFiles _numberOfSourceFiles)
-               if (_numberOfSourceFiles GREATER 1)
-                       # mark sources as cotired to prevent them from being used in another cotired target
-                       set_source_files_properties(${_sourceFiles} PROPERTIES COTIRE_TARGET "${_target}")
-                       list (REMOVE_AT _sourceFiles 0)
-                       set (_flags "")
-                       cotire_determine_compiler_version("${_language}" COTIRE_${_language}_COMPILER)
-                       cotire_add_prefix_pch_inclusion_flags(
-                               "${_language}" "${CMAKE_${_language}_COMPILER_ID}" "${COTIRE_${_language}_COMPILER_VERSION}"
-                               "${_prefixFile}" "${_pchFile}" _flags)
-                       set_property (SOURCE ${_sourceFiles} APPEND_STRING PROPERTY COMPILE_FLAGS " ${_flags} ")
-                       # make source files depend on precompiled header
-                       set_property (SOURCE ${_sourceFiles} APPEND PROPERTY OBJECT_DEPENDS "${_pchFile}")
-               endif()
-       elseif ("${CMAKE_GENERATOR}" MATCHES "Makefiles|Ninja")
-               if (NOT _wholeTarget)
-                       # for makefile based generator, we force the inclusion of the prefix header for a subset
-                       # of the source files, if this is a multi-language target or has excluded files
-                       set (_flags "")
-                       cotire_determine_compiler_version("${_language}" COTIRE_${_language}_COMPILER)
-                       cotire_add_prefix_pch_inclusion_flags(
-                               "${_language}" "${CMAKE_${_language}_COMPILER_ID}" "${COTIRE_${_language}_COMPILER_VERSION}"
-                               "${_prefixFile}" "${_pchFile}" _flags)
-                       set_property (SOURCE ${_sourceFiles} APPEND_STRING PROPERTY COMPILE_FLAGS " ${_flags} ")
-                       # mark sources as cotired to prevent them from being used in another cotired target
-                       set_source_files_properties(${_sourceFiles} PROPERTIES COTIRE_TARGET "${_target}")
-               endif()
-               # make source files depend on precompiled header
-               set_property (SOURCE ${_sourceFiles} APPEND PROPERTY OBJECT_DEPENDS "${_pchFile}")
-       endif()
-endfunction()
-
-function (cotire_setup_prefix_file_inclusion _language _target _prefixFile)
-       set (_sourceFiles ${ARGN})
-       # force the inclusion of the prefix header for the given source files
-       set (_flags "")
-       cotire_determine_compiler_version("${_language}" COTIRE_${_language}_COMPILER)
-       cotire_add_prefix_pch_inclusion_flags(
-               "${_language}" "${CMAKE_${_language}_COMPILER_ID}" "${COTIRE_${_language}_COMPILER_VERSION}"
-               "${_prefixFile}" "" _flags)
-       set_property (SOURCE ${_sourceFiles} APPEND_STRING PROPERTY COMPILE_FLAGS " ${_flags} ")
-       # mark sources as cotired to prevent them from being used in another cotired target
-       set_source_files_properties(${_sourceFiles} PROPERTIES COTIRE_TARGET "${_target}")
-       # make source files depend on prefix header
-       set_property (SOURCE ${_sourceFiles} APPEND PROPERTY OBJECT_DEPENDS "${_prefixFile}")
-endfunction()
-
-function (cotire_get_first_set_property_value _propertyValueVar _type _object)
-       set (_properties ${ARGN})
-       foreach (_property ${_properties})
-               get_property(_propertyValue ${_type} "${_object}" PROPERTY ${_property})
-               if (_propertyValue)
-                       set (${_propertyValueVar} ${_propertyValue} PARENT_SCOPE)
-                       return()
-               endif()
-       endforeach()
-       set (${_propertyValueVar} "" PARENT_SCOPE)
-endfunction()
-
-function (cotire_setup_combine_command _language _sourceDir _targetScript _joinedFile _cmdsVar)
-       set (_files ${ARGN})
-       set (_filesPaths "")
-       foreach (_file ${_files})
-               if (IS_ABSOLUTE "${_file}")
-                       set (_filePath "${_file}")
-               else()
-                       get_filename_component(_filePath "${_sourceDir}/${_file}" ABSOLUTE)
-               endif()
-               file (RELATIVE_PATH _fileRelPath "${_sourceDir}" "${_filePath}")
-               if (NOT IS_ABSOLUTE "${_fileRelPath}" AND NOT "${_fileRelPath}" MATCHES "^\\.\\.")
-                       list (APPEND _filesPaths "${_fileRelPath}")
-               else()
-                       list (APPEND _filesPaths "${_filePath}")
-               endif()
-       endforeach()
-       cotire_set_cmd_to_prologue(_prefixCmd)
-       list (APPEND _prefixCmd -P "${COTIRE_CMAKE_MODULE_FILE}" "combine")
-       if (_targetScript)
-               list (APPEND _prefixCmd "${_targetScript}")
-       endif()
-       list (APPEND _prefixCmd "${_joinedFile}" ${_filesPaths})
-       if (COTIRE_DEBUG)
-               message (STATUS "add_custom_command: OUTPUT ${_joinedFile} COMMAND ${_prefixCmd} DEPENDS ${_files}")
-       endif()
-       set_property (SOURCE "${_joinedFile}" PROPERTY GENERATED TRUE)
-       file (RELATIVE_PATH _joinedFileRelPath "${CMAKE_BINARY_DIR}" "${_joinedFile}")
-       get_filename_component(_joinedFileBaseName "${_joinedFile}" NAME_WE)
-       get_filename_component(_joinedFileExt "${_joinedFile}" EXT)
-       if (_language AND _joinedFileBaseName MATCHES "${COTIRE_UNITY_SOURCE_FILENAME_SUFFIX}$")
-               set (_comment "Generating ${_language} unity source ${_joinedFileRelPath}")
-       elseif (_language AND _joinedFileBaseName MATCHES "${COTIRE_PREFIX_HEADER_FILENAME_SUFFIX}$")
-               if (_joinedFileExt MATCHES "^\\.c")
-                       set (_comment "Generating ${_language} prefix source ${_joinedFileRelPath}")
-               else()
-                       set (_comment "Generating ${_language} prefix header ${_joinedFileRelPath}")
-               endif()
-       else()
-               set (_comment "Generating ${_joinedFileRelPath}")
-       endif()
-       add_custom_command(
-               OUTPUT "${_joinedFile}"
-               COMMAND ${_prefixCmd}
-               DEPENDS ${_files}
-               COMMENT "${_comment}"
-               WORKING_DIRECTORY "${_sourceDir}" VERBATIM)
-       list (APPEND ${_cmdsVar} COMMAND ${_prefixCmd})
-       set (${_cmdsVar} ${${_cmdsVar}} PARENT_SCOPE)
-endfunction()
-
-function (cotire_setup_target_pch_usage _languages _targetSourceDir _target _wholeTarget)
-       if (XCODE)
-               # for Xcode, we attach a pre-build action to generate the unity sources and prefix headers
-               # if necessary, we also generate a single prefix header which includes all language specific prefix headers
-               set (_prefixFiles "")
-               foreach (_language ${_languages})
-                       get_property(_prefixFile TARGET ${_target} PROPERTY COTIRE_${_language}_PREFIX_HEADER)
-                       if (_prefixFile)
-                               list (APPEND _prefixFiles "${_prefixFile}")
-                       endif()
-               endforeach()
-               set (_cmds ${ARGN})
-               list (LENGTH _prefixFiles _numberOfPrefixFiles)
-               if (_numberOfPrefixFiles GREATER 1)
-                       cotire_make_prefix_file_path("" ${_target} _prefixHeader)
-                       cotire_setup_combine_command("" "${_targetSourceDir}" "" "${_prefixHeader}" _cmds ${_prefixFiles})
-               else()
-                       set (_prefixHeader "${_prefixFiles}")
-               endif()
-               if (COTIRE_DEBUG)
-                       message (STATUS "add_custom_command: TARGET ${_target} PRE_BUILD ${_cmds}")
-               endif()
-               add_custom_command(TARGET "${_target}"
-                       PRE_BUILD ${_cmds}
-                       WORKING_DIRECTORY "${_targetSourceDir}"
-                       COMMENT "Updating target ${_target} prefix headers" VERBATIM)
-               # make Xcode precompile the generated prefix header with ProcessPCH and ProcessPCH++
-               set_target_properties(${_target} PROPERTIES XCODE_ATTRIBUTE_GCC_PRECOMPILE_PREFIX_HEADER "YES")
-               set_target_properties(${_target} PROPERTIES XCODE_ATTRIBUTE_GCC_PREFIX_HEADER "${_prefixHeader}")
-       elseif ("${CMAKE_GENERATOR}" MATCHES "Makefiles|Ninja")
-               # for makefile based generator, we force inclusion of the prefix header for all target source files
-               # if this is a single-language target without any excluded files
-               if (_wholeTarget)
-                       set (_language "${_languages}")
-                       # for Visual Studio and Intel, precompiled header inclusion is always done on the source file level
-                       # see cotire_setup_pch_file_inclusion
-                       if (NOT CMAKE_${_language}_COMPILER_ID MATCHES "MSVC|Intel")
-                               get_property(_prefixFile TARGET ${_target} PROPERTY COTIRE_${_language}_PREFIX_HEADER)
-                               get_property(_pchFile TARGET ${_target} PROPERTY COTIRE_${_language}_PRECOMPILED_HEADER)
-                               set (_flags "")
-                               cotire_determine_compiler_version("${_language}" COTIRE_${_language}_COMPILER)
-                               cotire_add_prefix_pch_inclusion_flags(
-                                       "${_language}" "${CMAKE_${_language}_COMPILER_ID}" "${COTIRE_${_language}_COMPILER_VERSION}"
-                                       "${_prefixFile}" "${_pchFile}" _flags)
-                               set_property(TARGET ${_target} APPEND_STRING PROPERTY COMPILE_FLAGS " ${_flags} ")
-                       endif()
-               endif()
-       endif()
-endfunction()
-
-function (cotire_setup_unity_generation_commands _language _targetSourceDir _target _targetScript _targetConfigScript _unityFiles _cmdsVar)
-       set (_dependencySources "")
-       cotire_get_unity_source_dependencies(${_language} ${_target} _dependencySources ${ARGN})
-       foreach (_unityFile ${_unityFiles})
-               file (RELATIVE_PATH _unityFileRelPath "${CMAKE_BINARY_DIR}" "${_unityFile}")
-               set_property (SOURCE "${_unityFile}" PROPERTY GENERATED TRUE)
-               # set up compiled unity source dependencies
-               # this ensures that missing source files are generated before the unity file is compiled
-               if (COTIRE_DEBUG AND _dependencySources)
-                       message (STATUS "${_unityFile} OBJECT_DEPENDS ${_dependencySources}")
-               endif()
-               if (_dependencySources)
-                       set_property (SOURCE "${_unityFile}" PROPERTY OBJECT_DEPENDS ${_dependencySources})
-               endif()
-               if (WIN32 AND CMAKE_${_language}_COMPILER_ID MATCHES "MSVC|Intel")
-                       # unity file compilation results in potentially huge object file, thus use /bigobj by default unter MSVC and Windows Intel
-                       set_property (SOURCE "${_unityFile}" APPEND_STRING PROPERTY COMPILE_FLAGS "/bigobj")
-               endif()
-               cotire_set_cmd_to_prologue(_unityCmd)
-               list (APPEND _unityCmd -P "${COTIRE_CMAKE_MODULE_FILE}" "unity" "${_targetConfigScript}" "${_unityFile}")
-               if (COTIRE_DEBUG)
-                       message (STATUS "add_custom_command: OUTPUT ${_unityFile} COMMAND ${_unityCmd} DEPENDS ${_targetScript}")
-               endif()
-               add_custom_command(
-                       OUTPUT "${_unityFile}"
-                       COMMAND ${_unityCmd}
-                       DEPENDS "${_targetScript}"
-                       COMMENT "Generating ${_language} unity source ${_unityFileRelPath}"
-                       WORKING_DIRECTORY "${_targetSourceDir}" VERBATIM)
-               list (APPEND ${_cmdsVar} COMMAND ${_unityCmd})
-       endforeach()
-       list (LENGTH _unityFiles _numberOfUnityFiles)
-       if (_numberOfUnityFiles GREATER 1)
-               # create a joint unity file from all unity file segments
-               cotire_make_single_unity_source_file_path(${_language} ${_target} _unityFile)
-               cotire_setup_combine_command(${_language} "${_targetSourceDir}" "${_targetConfigScript}" "${_unityFile}" ${_cmdsVar} ${_unityFiles})
-       endif()
-       set (${_cmdsVar} ${${_cmdsVar}} PARENT_SCOPE)
-endfunction()
-
-function (cotire_setup_prefix_generation_command _language _target _targetSourceDir _targetScript _prefixFile _unityFile _cmdsVar)
-       set (_sourceFiles ${ARGN})
-       set (_dependencySources "")
-       cotire_get_prefix_header_dependencies(${_language} ${_target} _dependencySources ${_sourceFiles})
-       cotire_set_cmd_to_prologue(_prefixCmd)
-       list (APPEND _prefixCmd -P "${COTIRE_CMAKE_MODULE_FILE}" "prefix" "${_targetScript}" "${_prefixFile}" "${_unityFile}")
-       set_property (SOURCE "${_prefixFile}" PROPERTY GENERATED TRUE)
-       if (COTIRE_DEBUG)
-               message (STATUS "add_custom_command: OUTPUT ${_prefixFile} COMMAND ${_prefixCmd} DEPENDS ${_unityFile} ${_dependencySources}")
-       endif()
-       file (RELATIVE_PATH _prefixFileRelPath "${CMAKE_BINARY_DIR}" "${_prefixFile}")
-       get_filename_component(_prefixFileExt "${_prefixFile}" EXT)
-       if (_prefixFileExt MATCHES "^\\.c")
-               set (_comment "Generating ${_language} prefix source ${_prefixFileRelPath}")
-       else()
-               set (_comment "Generating ${_language} prefix header ${_prefixFileRelPath}")
-       endif()
-       add_custom_command(
-               OUTPUT "${_prefixFile}" "${_prefixFile}.log"
-               COMMAND ${_prefixCmd}
-               DEPENDS "${_unityFile}" ${_dependencySources}
-               COMMENT "${_comment}"
-               WORKING_DIRECTORY "${CMAKE_BINARY_DIR}" VERBATIM)
-       list (APPEND ${_cmdsVar} COMMAND ${_prefixCmd})
-       set (${_cmdsVar} ${${_cmdsVar}} PARENT_SCOPE)
-endfunction()
-
-function (cotire_setup_prefix_generation_from_unity_command _language _target _targetSourceDir _targetScript _prefixFile _unityFiles _cmdsVar)
-       set (_sourceFiles ${ARGN})
-       if (CMAKE_${_language}_COMPILER_ID MATCHES "GNU|Clang")
-               # GNU and Clang require indirect compilation of the prefix header to make them honor the system_header pragma
-               cotire_prefix_header_to_source_file_path(${_language} "${_prefixFile}" _prefixSourceFile)
-       else()
-               set (_prefixSourceFile "${_prefixFile}")
-       endif()
-       list (LENGTH _unityFiles _numberOfUnityFiles)
-       if (_numberOfUnityFiles GREATER 1)
-               cotire_make_single_unity_source_file_path(${_language} ${_target} _unityFile)
-               cotire_setup_prefix_generation_command(
-                       ${_language} ${_target} "${_targetSourceDir}" "${_targetScript}"
-                       "${_prefixSourceFile}" "${_unityFile}" ${_cmdsVar} ${_sourceFiles})
-       else()
-               cotire_setup_prefix_generation_command(
-                       ${_language} ${_target} "${_targetSourceDir}" "${_targetScript}"
-                       "${_prefixSourceFile}" "${_unityFiles}" ${_cmdsVar} ${_sourceFiles})
-       endif()
-       if (CMAKE_${_language}_COMPILER_ID MATCHES "GNU|Clang")
-               cotire_setup_combine_command(${_language} "${_targetSourceDir}" "${_targetScript}" "${_prefixFile}" ${_cmdsVar} ${_prefixSourceFile})
-       endif()
-       set (${_cmdsVar} ${${_cmdsVar}} PARENT_SCOPE)
-endfunction()
-
-function (cotire_setup_prefix_generation_from_provided_command _language _target _targetSourceDir _targetScript _prefixFile _cmdsVar)
-       set (_prefixHeaderFiles ${ARGN})
-       if (CMAKE_${_language}_COMPILER_ID MATCHES "GNU|Clang")
-               # GNU and Clang require indirect compilation of the prefix header to make them honor the system_header pragma
-               cotire_prefix_header_to_source_file_path(${_language} "${_prefixFile}" _prefixSourceFile)
-       else()
-               set (_prefixSourceFile "${_prefixFile}")
-       endif()
-       cotire_setup_combine_command(${_language} "${_targetSourceDir}" "${_targetScript}" "${_prefixSourceFile}" _cmds ${_prefixHeaderFiles})
-       if (CMAKE_${_language}_COMPILER_ID MATCHES "GNU|Clang")
-               cotire_setup_combine_command(${_language} "${_targetSourceDir}" "${_targetScript}" "${_prefixFile}" _cmds ${_prefixSourceFile})
-       endif()
-       set (${_cmdsVar} ${${_cmdsVar}} PARENT_SCOPE)
-endfunction()
-
-function (cotire_init_cotire_target_properties _target)
-       get_property(_isSet TARGET ${_target} PROPERTY COTIRE_ENABLE_PRECOMPILED_HEADER SET)
-       if (NOT _isSet)
-               set_property(TARGET ${_target} PROPERTY COTIRE_ENABLE_PRECOMPILED_HEADER TRUE)
-       endif()
-       get_property(_isSet TARGET ${_target} PROPERTY COTIRE_ADD_UNITY_BUILD SET)
-       if (NOT _isSet)
-               set_property(TARGET ${_target} PROPERTY COTIRE_ADD_UNITY_BUILD TRUE)
-       endif()
-       get_property(_isSet TARGET ${_target} PROPERTY COTIRE_ADD_CLEAN SET)
-       if (NOT _isSet)
-               set_property(TARGET ${_target} PROPERTY COTIRE_ADD_CLEAN FALSE)
-       endif()
-       get_property(_isSet TARGET ${_target} PROPERTY COTIRE_PREFIX_HEADER_IGNORE_PATH SET)
-       if (NOT _isSet)
-               set_property(TARGET ${_target} PROPERTY COTIRE_PREFIX_HEADER_IGNORE_PATH "${CMAKE_SOURCE_DIR}")
-               cotire_check_is_path_relative_to("${CMAKE_BINARY_DIR}" _isRelative "${CMAKE_SOURCE_DIR}")
-               if (NOT _isRelative)
-                       set_property(TARGET ${_target} APPEND PROPERTY COTIRE_PREFIX_HEADER_IGNORE_PATH "${CMAKE_BINARY_DIR}")
-               endif()
-       endif()
-       get_property(_isSet TARGET ${_target} PROPERTY COTIRE_PREFIX_HEADER_INCLUDE_PATH SET)
-       if (NOT _isSet)
-               set_property(TARGET ${_target} PROPERTY COTIRE_PREFIX_HEADER_INCLUDE_PATH "")
-       endif()
-       get_property(_isSet TARGET ${_target} PROPERTY COTIRE_UNITY_SOURCE_PRE_UNDEFS SET)
-       if (NOT _isSet)
-               set_property(TARGET ${_target} PROPERTY COTIRE_UNITY_SOURCE_PRE_UNDEFS "")
-       endif()
-       get_property(_isSet TARGET ${_target} PROPERTY COTIRE_UNITY_SOURCE_POST_UNDEFS SET)
-       if (NOT _isSet)
-               set_property(TARGET ${_target} PROPERTY COTIRE_UNITY_SOURCE_POST_UNDEFS "")
-       endif()
-       get_property(_isSet TARGET ${_target} PROPERTY COTIRE_UNITY_LINK_LIBRARIES_INIT SET)
-       if (NOT _isSet)
-               set_property(TARGET ${_target} PROPERTY COTIRE_UNITY_LINK_LIBRARIES_INIT "")
-       endif()
-       get_property(_isSet TARGET ${_target} PROPERTY COTIRE_UNITY_SOURCE_MAXIMUM_NUMBER_OF_INCLUDES SET)
-       if (NOT _isSet)
-               if (COTIRE_MAXIMUM_NUMBER_OF_UNITY_INCLUDES)
-                       set_property(TARGET ${_target} PROPERTY COTIRE_UNITY_SOURCE_MAXIMUM_NUMBER_OF_INCLUDES "${COTIRE_MAXIMUM_NUMBER_OF_UNITY_INCLUDES}")
-               else()
-                       set_property(TARGET ${_target} PROPERTY COTIRE_UNITY_SOURCE_MAXIMUM_NUMBER_OF_INCLUDES "")
-               endif()
-       endif()
-endfunction()
-
-function (cotire_make_target_message _target _languages _disableMsg _targetMsgVar)
-       get_target_property(_targetUsePCH ${_target} COTIRE_ENABLE_PRECOMPILED_HEADER)
-       get_target_property(_targetAddSCU ${_target} COTIRE_ADD_UNITY_BUILD)
-       string (REPLACE ";" " " _languagesStr "${_languages}")
-       math (EXPR _numberOfExcludedFiles "${ARGC} - 4")
-       if (_numberOfExcludedFiles EQUAL 0)
-               set (_excludedStr "")
-       elseif (COTIRE_VERBOSE OR _numberOfExcludedFiles LESS 4)
-               string (REPLACE ";" ", " _excludedStr "excluding ${ARGN}")
-       else()
-               set (_excludedStr "excluding ${_numberOfExcludedFiles} files")
-       endif()
-       set (_targetMsg "")
-       if (NOT _languages)
-               set (_targetMsg "Target ${_target} cannot be cotired.")
-               if (_disableMsg)
-                       set (_targetMsg "${_targetMsg} ${_disableMsg}")
-               endif()
-       elseif (NOT _targetUsePCH AND NOT _targetAddSCU)
-               set (_targetMsg "${_languagesStr} target ${_target} cotired without unity build and precompiled header.")
-               if (_disableMsg)
-                       set (_targetMsg "${_targetMsg} ${_disableMsg}")
-               endif()
-       elseif (NOT _targetUsePCH)
-               if (_excludedStr)
-                       set (_targetMsg "${_languagesStr} target ${_target} cotired without precompiled header ${_excludedStr}.")
-               else()
-                       set (_targetMsg "${_languagesStr} target ${_target} cotired without precompiled header.")
-               endif()
-               if (_disableMsg)
-                       set (_targetMsg "${_targetMsg} ${_disableMsg}")
-               endif()
-       elseif (NOT _targetAddSCU)
-               if (_excludedStr)
-                       set (_targetMsg "${_languagesStr} target ${_target} cotired without unity build ${_excludedStr}.")
-               else()
-                       set (_targetMsg "${_languagesStr} target ${_target} cotired without unity build.")
-               endif()
-       else()
-               if (_excludedStr)
-                       set (_targetMsg "${_languagesStr} target ${_target} cotired ${_excludedStr}.")
-               else()
-                       set (_targetMsg "${_languagesStr} target ${_target} cotired.")
-               endif()
-       endif()
-       set (${_targetMsgVar} "${_targetMsg}" PARENT_SCOPE)
-endfunction()
-
-function (cotire_choose_target_languages _targetSourceDir _target _targetLanguagesVar)
-       set (_languages ${ARGN})
-       set (_allSourceFiles "")
-       set (_allExcludedSourceFiles "")
-       set (_allCotiredSourceFiles "")
-       set (_targetLanguages "")
-       get_target_property(_targetType ${_target} TYPE)
-       get_target_property(_targetSourceFiles ${_target} SOURCES)
-       get_target_property(_targetUsePCH ${_target} COTIRE_ENABLE_PRECOMPILED_HEADER)
-       get_target_property(_targetAddSCU ${_target} COTIRE_ADD_UNITY_BUILD)
-       set (_disableMsg "")
-       foreach (_language ${_languages})
-               get_target_property(_prefixHeader ${_target} COTIRE_${_language}_PREFIX_HEADER)
-               get_target_property(_unityBuildFile ${_target} COTIRE_${_language}_UNITY_SOURCE)
-               if (_prefixHeader OR _unityBuildFile)
-                       message (STATUS "cotire: target ${_target} has already been cotired.")
-                       set (${_targetLanguagesVar} "" PARENT_SCOPE)
-                       return()
-               endif()
-               if (_targetUsePCH AND "${_language}" MATCHES "^C|CXX$")
-                       cotire_check_precompiled_header_support("${_language}" "${_targetSourceDir}" "${_target}" _disableMsg)
-                       if (_disableMsg)
-                               set (_targetUsePCH FALSE)
-                       endif()
-               endif()
-               set (_sourceFiles "")
-               set (_excludedSources "")
-               set (_cotiredSources "")
-               cotire_filter_language_source_files(${_language} _sourceFiles _excludedSources _cotiredSources ${_targetSourceFiles})
-               if (_sourceFiles OR _excludedSources OR _cotiredSources)
-                       list (APPEND _targetLanguages ${_language})
-               endif()
-               if (_sourceFiles)
-                       list (APPEND _allSourceFiles ${_sourceFiles})
-               endif()
-               if (_excludedSources)
-                       list (APPEND _allExcludedSourceFiles ${_excludedSources})
-               endif()
-               if (_cotiredSources)
-                       list (APPEND _allCotiredSourceFiles ${_cotiredSources})
-               endif()
-       endforeach()
-       set (_targetMsgLevel STATUS)
-       if (NOT _targetLanguages)
-               string (REPLACE ";" " or " _languagesStr "${_languages}")
-               set (_disableMsg "No ${_languagesStr} source files.")
-               set (_targetUsePCH FALSE)
-               set (_targetAddSCU FALSE)
-       endif()
-       if (_targetUsePCH)
-               list (LENGTH _allSourceFiles _numberOfSources)
-               if (_numberOfSources LESS ${COTIRE_MINIMUM_NUMBER_OF_TARGET_SOURCES})
-                       set (_disableMsg "Too few applicable sources.")
-                       set (_targetUsePCH FALSE)
-               elseif (_allCotiredSourceFiles)
-                       cotire_get_source_file_property_values(_cotireTargets COTIRE_TARGET ${_allCotiredSourceFiles})
-                       list (REMOVE_DUPLICATES _cotireTargets)
-                       string (REPLACE ";" ", " _cotireTargetsStr "${_cotireTargets}")
-                       set (_disableMsg "Target sources already include a precompiled header for target(s) ${_cotireTargets}.")
-                       set (_disableMsg "${_disableMsg} Set target property COTIRE_ENABLE_PRECOMPILED_HEADER to FALSE for targets ${_target},")
-                       set (_disableMsg "${_disableMsg} ${_cotireTargetsStr} to get a workable build system.")
-                       set (_targetMsgLevel SEND_ERROR)
-                       set (_targetUsePCH FALSE)
-               elseif (XCODE AND _allExcludedSourceFiles)
-                       # for Xcode, we cannot apply the precompiled header to individual sources, only to the whole target
-                       set (_disableMsg "Exclusion of source files not supported for generator Xcode.")
-                       set (_targetUsePCH FALSE)
-               elseif (XCODE AND "${_targetType}" STREQUAL "OBJECT_LIBRARY")
-                       # for Xcode, we cannot apply the required PRE_BUILD action to generate the prefix header to an OBJECT_LIBRARY target
-                       set (_disableMsg "Required PRE_BUILD action not supported for OBJECT_LIBRARY targets for generator Xcode.")
-                       set (_targetUsePCH FALSE)
-               endif()
-       endif()
-       set_property(TARGET ${_target} PROPERTY COTIRE_ENABLE_PRECOMPILED_HEADER ${_targetUsePCH})
-       set_property(TARGET ${_target} PROPERTY COTIRE_ADD_UNITY_BUILD ${_targetAddSCU})
-       cotire_make_target_message(${_target} "${_targetLanguages}" "${_disableMsg}" _targetMsg ${_allExcludedSourceFiles})
-       if (_targetMsg)
-               if (NOT DEFINED COTIREMSG_${_target})
-                       set (COTIREMSG_${_target} "")
-               endif()
-               if (COTIRE_VERBOSE OR NOT "${_targetMsgLevel}" STREQUAL "STATUS" OR
-                       NOT "${COTIREMSG_${_target}}" STREQUAL "${_targetMsg}")
-                       # cache message to avoid redundant messages on re-configure
-                       set (COTIREMSG_${_target} "${_targetMsg}" CACHE INTERNAL "${_target} cotire message.")
-                       message (${_targetMsgLevel} "${_targetMsg}")
-               endif()
-       endif()
-       set (${_targetLanguagesVar} ${_targetLanguages} PARENT_SCOPE)
-endfunction()
-
-function (cotire_compute_unity_max_number_of_includes _target _maxIncludesVar)
-       set (_sourceFiles ${ARGN})
-       get_target_property(_maxIncludes ${_target} COTIRE_UNITY_SOURCE_MAXIMUM_NUMBER_OF_INCLUDES)
-       if (_maxIncludes MATCHES "(-j|--parallel|--jobs) ?([0-9]*)")
-               set (_numberOfThreads "${CMAKE_MATCH_2}")
-               if (NOT _numberOfThreads)
-                       # use all available cores
-                       ProcessorCount(_numberOfThreads)
-               endif()
-               list (LENGTH _sourceFiles _numberOfSources)
-               math (EXPR _maxIncludes "(${_numberOfSources} + ${_numberOfThreads} - 1) / ${_numberOfThreads}")
-               # a unity source segment must not contain less than COTIRE_MINIMUM_NUMBER_OF_TARGET_SOURCES files
-               if (_maxIncludes LESS ${COTIRE_MINIMUM_NUMBER_OF_TARGET_SOURCES})
-                       set (_maxIncludes ${COTIRE_MINIMUM_NUMBER_OF_TARGET_SOURCES})
-               endif()
-       elseif (NOT _maxIncludes MATCHES "[0-9]+")
-               set (_maxIncludes 0)
-       endif()
-       if (COTIRE_DEBUG)
-               message (STATUS "${_target} unity source max includes = ${_maxIncludes}")
-       endif()
-       set (${_maxIncludesVar} ${_maxIncludes} PARENT_SCOPE)
-endfunction()
-
-function (cotire_process_target_language _language _configurations _targetSourceDir _targetBinaryDir _target _wholeTargetVar _cmdsVar)
-       set (${_cmdsVar} "" PARENT_SCOPE)
-       get_target_property(_targetSourceFiles ${_target} SOURCES)
-       set (_sourceFiles "")
-       set (_excludedSources "")
-       set (_cotiredSources "")
-       cotire_filter_language_source_files(${_language} _sourceFiles _excludedSources _cotiredSources ${_targetSourceFiles})
-       if (NOT _sourceFiles AND NOT _cotiredSources)
-               return()
-       endif()
-       set (_wholeTarget ${${_wholeTargetVar}})
-       set (_cmds "")
-       # check for user provided unity source file list
-       get_property(_unitySourceFiles TARGET ${_target} PROPERTY COTIRE_${_language}_UNITY_SOURCE_INIT)
-       if (NOT _unitySourceFiles)
-               set (_unitySourceFiles ${_sourceFiles} ${_cotiredSources})
-       endif()
-       cotire_generate_target_script(
-               ${_language} "${_configurations}" "${_targetSourceDir}" "${_targetBinaryDir}" ${_target} _targetScript _targetConfigScript ${_unitySourceFiles})
-       cotire_compute_unity_max_number_of_includes(${_target} _maxIncludes ${_unitySourceFiles})
-       cotire_make_unity_source_file_paths(${_language} ${_target} ${_maxIncludes} _unityFiles ${_unitySourceFiles})
-       if (NOT _unityFiles)
-               return()
-       endif()
-       cotire_setup_unity_generation_commands(
-               ${_language} "${_targetSourceDir}" ${_target} "${_targetScript}" "${_targetConfigScript}" "${_unityFiles}" _cmds ${_unitySourceFiles})
-       cotire_make_prefix_file_path(${_language} ${_target} _prefixFile)
-       if (_prefixFile)
-               # check for user provided prefix header files
-               get_property(_prefixHeaderFiles TARGET ${_target} PROPERTY COTIRE_${_language}_PREFIX_HEADER_INIT)
-               if (_prefixHeaderFiles)
-                       cotire_setup_prefix_generation_from_provided_command(
-                               ${_language} ${_target} "${_targetSourceDir}" "${_targetConfigScript}" "${_prefixFile}" _cmds ${_prefixHeaderFiles})
-               else()
-                       cotire_setup_prefix_generation_from_unity_command(
-                               ${_language} ${_target} "${_targetSourceDir}" "${_targetConfigScript}" "${_prefixFile}" "${_unityFiles}" _cmds ${_unitySourceFiles})
-               endif()
-               get_target_property(_targetUsePCH ${_target} COTIRE_ENABLE_PRECOMPILED_HEADER)
-               if (_targetUsePCH)
-                       cotire_make_pch_file_path(${_language} "${_targetSourceDir}" ${_target} _pchFile)
-                       if (_pchFile)
-                               cotire_setup_pch_file_compilation(
-                                       ${_language} ${_target} "${_targetSourceDir}" "${_targetConfigScript}" "${_prefixFile}" "${_pchFile}" ${_sourceFiles})
-                               if (_excludedSources)
-                                       set (_wholeTarget FALSE)
-                               endif()
-                               cotire_setup_pch_file_inclusion(
-                                       ${_language} ${_target} ${_wholeTarget} "${_prefixFile}" "${_pchFile}" ${_sourceFiles})
-                       endif()
-               elseif (_prefixHeaderFiles)
-                       # user provided prefix header must be included
-                       cotire_setup_prefix_file_inclusion(
-                               ${_language} ${_target} "${_prefixFile}" ${_sourceFiles})
-               endif()
-       endif()
-       # mark target as cotired for language
-       set_property(TARGET ${_target} PROPERTY COTIRE_${_language}_UNITY_SOURCE "${_unityFiles}")
-       if (_prefixFile)
-               set_property(TARGET ${_target} PROPERTY COTIRE_${_language}_PREFIX_HEADER "${_prefixFile}")
-               if (_targetUsePCH AND _pchFile)
-                       set_property(TARGET ${_target} PROPERTY COTIRE_${_language}_PRECOMPILED_HEADER "${_pchFile}")
-               endif()
-       endif()
-       set (${_wholeTargetVar} ${_wholeTarget} PARENT_SCOPE)
-       set (${_cmdsVar} ${_cmds} PARENT_SCOPE)
-endfunction()
-
-function (cotire_setup_clean_target _target)
-       set (_cleanTargetName "${_target}${COTIRE_CLEAN_TARGET_SUFFIX}")
-       if (NOT TARGET "${_cleanTargetName}")
-               cotire_set_cmd_to_prologue(_cmds)
-               get_filename_component(_outputDir "${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}" ABSOLUTE)
-               list (APPEND _cmds -P "${COTIRE_CMAKE_MODULE_FILE}" "cleanup" "${_outputDir}" "${COTIRE_INTDIR}" "${_target}")
-               add_custom_target(${_cleanTargetName} COMMAND ${_cmds} WORKING_DIRECTORY "${CMAKE_BINARY_DIR}"
-                       COMMENT "Cleaning up target ${_target} cotire generated files" VERBATIM)
-               cotire_init_target("${_cleanTargetName}")
-       endif()
-endfunction()
-
-function (cotire_setup_pch_target _languages _configurations _target)
-       if ("${CMAKE_GENERATOR}" MATCHES "Makefiles|Ninja")
-               # for makefile based generators, we add a custom target to trigger the generation of the cotire related files
-               set (_dependsFiles "")
-               foreach (_language ${_languages})
-                       set (_props COTIRE_${_language}_PREFIX_HEADER COTIRE_${_language}_UNITY_SOURCE)
-                       if (NOT CMAKE_${_language}_COMPILER_ID MATCHES "MSVC|Intel")
-                               # Visual Studio and Intel only create precompiled header as a side effect
-                               list (INSERT _props 0 COTIRE_${_language}_PRECOMPILED_HEADER)
-                       endif()
-                       cotire_get_first_set_property_value(_dependsFile TARGET ${_target} ${_props})
-                       if (_dependsFile)
-                               list (APPEND _dependsFiles "${_dependsFile}")
-                       endif()
-               endforeach()
-               if (_dependsFiles)
-                       set (_pchTargetName "${_target}${COTIRE_PCH_TARGET_SUFFIX}")
-                       add_custom_target("${_pchTargetName}" DEPENDS ${_dependsFiles})
-                       cotire_init_target("${_pchTargetName}")
-                       cotire_add_to_pch_all_target(${_pchTargetName})
-               endif()
-       else()
-               # for other generators, we add the "clean all" target to clean up the precompiled header
-               cotire_setup_clean_all_target()
-       endif()
-endfunction()
-
-function (cotire_setup_unity_build_target _languages _configurations _targetSourceDir _target)
-       get_target_property(_unityTargetName ${_target} COTIRE_UNITY_TARGET_NAME)
-       if (NOT _unityTargetName)
-               set (_unityTargetName "${_target}${COTIRE_UNITY_BUILD_TARGET_SUFFIX}")
-       endif()
-       # determine unity target sub type
-       get_target_property(_targetType ${_target} TYPE)
-       if ("${_targetType}" STREQUAL "EXECUTABLE")
-               set (_unityTargetSubType "")
-       elseif (_targetType MATCHES "(STATIC|SHARED|MODULE|OBJECT)_LIBRARY")
-               set (_unityTargetSubType "${CMAKE_MATCH_1}")
-       else()
-               message (WARNING "cotire: target ${_target} has unknown target type ${_targetType}.")
-               return()
-       endif()
-       # determine unity target sources
-       get_target_property(_targetSourceFiles ${_target} SOURCES)
-       set (_unityTargetSources ${_targetSourceFiles})
-       foreach (_language ${_languages})
-               get_property(_unityFiles TARGET ${_target} PROPERTY COTIRE_${_language}_UNITY_SOURCE)
-               if (_unityFiles)
-                       # remove source files that are included in the unity source
-                       set (_sourceFiles "")
-                       set (_excludedSources "")
-                       set (_cotiredSources "")
-                       cotire_filter_language_source_files(${_language} _sourceFiles _excludedSources _cotiredSources ${_targetSourceFiles})
-                       if (_sourceFiles OR _cotiredSources)
-                               list (REMOVE_ITEM _unityTargetSources ${_sourceFiles} ${_cotiredSources})
-                       endif()
-                       # if cotire is applied to a target which has not been added in the current source dir,
-                       # non-existing files cannot be referenced from the unity build target (this is a CMake restriction)
-                       if (NOT "${_targetSourceDir}" STREQUAL "${CMAKE_CURRENT_SOURCE_DIR}")
-                               set (_nonExistingFiles "")
-                               foreach (_file ${_unityTargetSources})
-                                       if (NOT EXISTS "${_file}")
-                                               list (APPEND _nonExistingFiles "${_file}")
-                                       endif()
-                               endforeach()
-                               if (_nonExistingFiles)
-                                       if (COTIRE_VERBOSE)
-                                               message (STATUS "removing non-existing ${_nonExistingFiles} from ${_unityTargetName}")
-                                       endif()
-                                       list (REMOVE_ITEM _unityTargetSources ${_nonExistingFiles})
-                               endif()
-                       endif()
-                       # add unity source files instead
-                       list (APPEND _unityTargetSources ${_unityFiles})
-               endif()
-       endforeach()
-       if (COTIRE_DEBUG)
-               message (STATUS "add ${_targetType} ${_unityTargetName} ${_unityTargetSubType} EXCLUDE_FROM_ALL ${_unityTargetSources}")
-       endif()
-       # generate unity target
-       if ("${_targetType}" STREQUAL "EXECUTABLE")
-               add_executable(${_unityTargetName} ${_unityTargetSubType} EXCLUDE_FROM_ALL ${_unityTargetSources})
-       else()
-               add_library(${_unityTargetName} ${_unityTargetSubType} EXCLUDE_FROM_ALL ${_unityTargetSources})
-       endif()
-       set (_outputDirProperties
-               ARCHIVE_OUTPUT_DIRECTORY ARCHIVE_OUTPUT_DIRECTORY_<CONFIG>
-               LIBRARY_OUTPUT_DIRECTORY LIBRARY_OUTPUT_DIRECTORY_<CONFIG>
-               RUNTIME_OUTPUT_DIRECTORY RUNTIME_OUTPUT_DIRECTORY_<CONFIG>)
-       # copy output location properties
-       if (COTIRE_UNITY_OUTPUT_DIRECTORY)
-               set (_setDefaultOutputDir TRUE)
-               if (IS_ABSOLUTE "${COTIRE_UNITY_OUTPUT_DIRECTORY}")
-                       set (_outputDir "${COTIRE_UNITY_OUTPUT_DIRECTORY}")
-               else()
-                       cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName} ${_outputDirProperties})
-                       cotire_resolve_config_properites("${_configurations}" _properties ${_outputDirProperties})
-                       foreach (_property ${_properties})
-                               get_property(_outputDir TARGET ${_target} PROPERTY ${_property})
-                               if (_outputDir)
-                                       get_filename_component(_outputDir "${_outputDir}/${COTIRE_UNITY_OUTPUT_DIRECTORY}" ABSOLUTE)
-                                       set_property(TARGET ${_unityTargetName} PROPERTY ${_property} "${_outputDir}")
-                                       set (_setDefaultOutputDir FALSE)
-                               endif()
-                       endforeach()
-                       if (_setDefaultOutputDir)
-                               get_filename_component(_outputDir "${CMAKE_CURRENT_BINARY_DIR}/${COTIRE_UNITY_OUTPUT_DIRECTORY}" ABSOLUTE)
-                       endif()
-               endif()
-               if (_setDefaultOutputDir)
-                       set_target_properties(${_unityTargetName} PROPERTIES
-                               ARCHIVE_OUTPUT_DIRECTORY "${_outputDir}"
-                               LIBRARY_OUTPUT_DIRECTORY "${_outputDir}"
-                               RUNTIME_OUTPUT_DIRECTORY "${_outputDir}")
-               endif()
-       else()
-               cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName} ${_outputDirProperties})
-       endif()
-       # copy output name
-       cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName}
-               ARCHIVE_OUTPUT_NAME ARCHIVE_OUTPUT_NAME_<CONFIG>
-               LIBRARY_OUTPUT_NAME LIBRARY_OUTPUT_NAME_<CONFIG>
-               OUTPUT_NAME OUTPUT_NAME_<CONFIG>
-               RUNTIME_OUTPUT_NAME RUNTIME_OUTPUT_NAME_<CONFIG>
-               PREFIX <CONFIG>_POSTFIX SUFFIX)
-       # copy compile stuff
-       cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName}
-               COMPILE_DEFINITIONS COMPILE_DEFINITIONS_<CONFIG>
-               COMPILE_FLAGS COMPILE_OPTIONS
-               Fortran_FORMAT Fortran_MODULE_DIRECTORY
-               INCLUDE_DIRECTORIES
-               INTERPROCEDURAL_OPTIMIZATION INTERPROCEDURAL_OPTIMIZATION_<CONFIG>
-               POSITION_INDEPENDENT_CODE
-               C_VISIBILITY_PRESET CXX_VISIBILITY_PRESET VISIBILITY_INLINES_HIDDEN)
-       # copy interface stuff
-       cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName}
-               COMPATIBLE_INTERFACE_BOOL COMPATIBLE_INTERFACE_NUMBER_MAX COMPATIBLE_INTERFACE_NUMBER_MIN COMPATIBLE_INTERFACE_STRING
-               INTERFACE_COMPILE_DEFINITIONS INTERFACE_COMPILE_OPTIONS INTERFACE_INCLUDE_DIRECTORIES
-               INTERFACE_POSITION_INDEPENDENT_CODE INTERFACE_SYSTEM_INCLUDE_DIRECTORIES
-               INTERFACE_AUTOUIC_OPTIONS)
-       # copy link stuff
-       cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName}
-               BUILD_WITH_INSTALL_RPATH INSTALL_RPATH INSTALL_RPATH_USE_LINK_PATH SKIP_BUILD_RPATH
-               LINKER_LANGUAGE LINK_DEPENDS LINK_DEPENDS_NO_SHARED
-               LINK_FLAGS LINK_FLAGS_<CONFIG>
-               LINK_INTERFACE_LIBRARIES LINK_INTERFACE_LIBRARIES_<CONFIG>
-               LINK_INTERFACE_MULTIPLICITY LINK_INTERFACE_MULTIPLICITY_<CONFIG>
-               LINK_SEARCH_START_STATIC LINK_SEARCH_END_STATIC
-               STATIC_LIBRARY_FLAGS STATIC_LIBRARY_FLAGS_<CONFIG>
-               NO_SONAME SOVERSION VERSION)
-       # copy Qt stuff
-       cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName}
-               AUTOMOC AUTOMOC_MOC_OPTIONS AUTOUIC AUTOUIC_OPTIONS AUTORCC AUTORCC_OPTIONS
-               AUTOGEN_TARGET_DEPENDS)
-       # copy cmake stuff
-       cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName}
-               IMPLICIT_DEPENDS_INCLUDE_TRANSFORM RULE_LAUNCH_COMPILE RULE_LAUNCH_CUSTOM RULE_LAUNCH_LINK)
-       # copy Apple platform specific stuff
-       cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName}
-               BUNDLE BUNDLE_EXTENSION FRAMEWORK INSTALL_NAME_DIR MACOSX_BUNDLE MACOSX_BUNDLE_INFO_PLIST MACOSX_FRAMEWORK_INFO_PLIST
-               MACOSX_RPATH OSX_ARCHITECTURES OSX_ARCHITECTURES_<CONFIG> PRIVATE_HEADER PUBLIC_HEADER RESOURCE)
-       # copy Windows platform specific stuff
-       cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName}
-               GNUtoMS
-               PDB_NAME PDB_NAME_<CONFIG> PDB_OUTPUT_DIRECTORY PDB_OUTPUT_DIRECTORY_<CONFIG>
-               VS_DOTNET_REFERENCES VS_GLOBAL_KEYWORD VS_GLOBAL_PROJECT_TYPES VS_GLOBAL_ROOTNAMESPACE VS_KEYWORD
-               VS_SCC_AUXPATH VS_SCC_LOCALPATH VS_SCC_PROJECTNAME VS_SCC_PROVIDER
-               VS_WINRT_EXTENSIONS VS_WINRT_REFERENCES WIN32_EXECUTABLE)
-       # use output name from original target
-       get_target_property(_targetOutputName ${_unityTargetName} OUTPUT_NAME)
-       if (NOT _targetOutputName)
-               set_property(TARGET ${_unityTargetName} PROPERTY OUTPUT_NAME "${_target}")
-       endif()
-       # use export symbol from original target
-       cotire_get_target_export_symbol("${_target}" _defineSymbol)
-       if (_defineSymbol)
-               set_property(TARGET ${_unityTargetName} PROPERTY DEFINE_SYMBOL "${_defineSymbol}")
-               if ("${_targetType}" STREQUAL "EXECUTABLE")
-                       set_property(TARGET ${_unityTargetName} PROPERTY ENABLE_EXPORTS TRUE)
-               endif()
-       endif()
-       cotire_init_target(${_unityTargetName})
-       cotire_add_to_unity_all_target(${_unityTargetName})
-       set_property(TARGET ${_target} PROPERTY COTIRE_UNITY_TARGET_NAME "${_unityTargetName}")
-endfunction(cotire_setup_unity_build_target)
-
-function (cotire_target _target)
-       set(_options "")
-       set(_oneValueArgs SOURCE_DIR BINARY_DIR)
-       set(_multiValueArgs LANGUAGES CONFIGURATIONS)
-       cmake_parse_arguments(_option "${_options}" "${_oneValueArgs}" "${_multiValueArgs}" ${ARGN})
-       if (NOT _option_SOURCE_DIR)
-               set (_option_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
-       endif()
-       if (NOT _option_BINARY_DIR)
-               set (_option_BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}")
-       endif()
-       if (NOT _option_LANGUAGES)
-               get_property (_option_LANGUAGES GLOBAL PROPERTY ENABLED_LANGUAGES)
-       endif()
-       if (NOT _option_CONFIGURATIONS)
-               if (CMAKE_CONFIGURATION_TYPES)
-                       set (_option_CONFIGURATIONS ${CMAKE_CONFIGURATION_TYPES})
-               elseif (CMAKE_BUILD_TYPE)
-                       set (_option_CONFIGURATIONS "${CMAKE_BUILD_TYPE}")
-               else()
-                       set (_option_CONFIGURATIONS "None")
-               endif()
-       endif()
-       # trivial checks
-       get_target_property(_imported ${_target} IMPORTED)
-       if (_imported)
-               message (WARNING "cotire: imported target ${_target} cannot be cotired.")
-               return()
-       endif()
-       # resolve alias
-       get_target_property(_aliasName ${_target} ALIASED_TARGET)
-       if (_aliasName)
-               if (COTIRE_DEBUG)
-                       message (STATUS "${_target} is an alias. Applying cotire to aliased target ${_aliasName} instead.")
-               endif()
-               set (_target ${_aliasName})
-       endif()
-       # check if target needs to be cotired for build type
-       # when using configuration types, the test is performed at build time
-       cotire_init_cotire_target_properties(${_target})
-       if (NOT CMAKE_CONFIGURATION_TYPES)
-               if (CMAKE_BUILD_TYPE)
-                       list (FIND _option_CONFIGURATIONS "${CMAKE_BUILD_TYPE}" _index)
-               else()
-                       list (FIND _option_CONFIGURATIONS "None" _index)
-               endif()
-               if (_index EQUAL -1)
-                       if (COTIRE_DEBUG)
-                               message (STATUS "CMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE} not cotired (${_option_CONFIGURATIONS})")
-                       endif()
-                       return()
-               endif()
-       endif()
-       # choose languages that apply to the target
-       cotire_choose_target_languages("${_option_SOURCE_DIR}" "${_target}" _targetLanguages ${_option_LANGUAGES})
-       if (NOT _targetLanguages)
-               return()
-       endif()
-       list (LENGTH _targetLanguages _numberOfLanguages)
-       if (_numberOfLanguages GREATER 1)
-               set (_wholeTarget FALSE)
-       else()
-               set (_wholeTarget TRUE)
-       endif()
-       set (_cmds "")
-       foreach (_language ${_targetLanguages})
-               cotire_process_target_language("${_language}" "${_option_CONFIGURATIONS}"
-                       "${_option_SOURCE_DIR}" "${_option_BINARY_DIR}" ${_target} _wholeTarget _cmd)
-               if (_cmd)
-                       list (APPEND _cmds ${_cmd})
-               endif()
-       endforeach()
-       get_target_property(_targetAddSCU ${_target} COTIRE_ADD_UNITY_BUILD)
-       if (_targetAddSCU)
-               cotire_setup_unity_build_target("${_targetLanguages}" "${_option_CONFIGURATIONS}" "${_option_SOURCE_DIR}" ${_target})
-       endif()
-       get_target_property(_targetUsePCH ${_target} COTIRE_ENABLE_PRECOMPILED_HEADER)
-       if (_targetUsePCH)
-               cotire_setup_target_pch_usage("${_targetLanguages}" "${_option_SOURCE_DIR}" ${_target} ${_wholeTarget} ${_cmds})
-               cotire_setup_pch_target("${_targetLanguages}" "${_option_CONFIGURATIONS}" ${_target})
-       endif()
-       get_target_property(_targetAddCleanTarget ${_target} COTIRE_ADD_CLEAN)
-       if (_targetAddCleanTarget)
-               cotire_setup_clean_target(${_target})
-       endif()
-endfunction(cotire_target)
-
-function (cotire_map_libraries _strategy _mappedLibrariesVar)
-       set (_mappedLibraries "")
-       foreach (_library ${ARGN})
-               if (TARGET "${_library}" AND "${_strategy}" MATCHES "COPY_UNITY")
-                       get_target_property(_libraryUnityTargetName ${_library} COTIRE_UNITY_TARGET_NAME)
-                       if (TARGET "${_libraryUnityTargetName}")
-                               list (APPEND _mappedLibraries "${_libraryUnityTargetName}")
-                       else()
-                               list (APPEND _mappedLibraries "${_library}")
-                       endif()
-               else()
-                       list (APPEND _mappedLibraries "${_library}")
-               endif()
-       endforeach()
-       list (REMOVE_DUPLICATES _mappedLibraries)
-       set (${_mappedLibrariesVar} ${_mappedLibraries} PARENT_SCOPE)
-endfunction()
-
-function (cotire_target_link_libraries _target)
-       get_target_property(_unityTargetName ${_target} COTIRE_UNITY_TARGET_NAME)
-       if (TARGET "${_unityTargetName}")
-               get_target_property(_linkLibrariesStrategy ${_target} COTIRE_UNITY_LINK_LIBRARIES_INIT)
-               if (COTIRE_DEBUG)
-                       message (STATUS "unity target ${_unityTargetName} link strategy: ${_linkLibrariesStrategy}")
-               endif()
-               if ("${_linkLibrariesStrategy}" MATCHES "^(COPY|COPY_UNITY)$")
-                       if (CMAKE_VERSION VERSION_LESS "2.8.11")
-                               message (WARNING "cotire: unity target link strategy ${_linkLibrariesStrategy} requires CMake 2.8.11 or later. Defaulting to NONE for ${_target}.")
-                       else()
-                               get_target_property(_linkLibraries ${_target} LINK_LIBRARIES)
-                               get_target_property(_interfaceLinkLibraries ${_target} INTERFACE_LINK_LIBRARIES)
-                               cotire_map_libraries("${_linkLibrariesStrategy}" _unityLinkLibraries ${_linkLibraries} ${_interfaceLinkLibraries})
-                               if (COTIRE_DEBUG)
-                                       message (STATUS "unity target ${_unityTargetName} libraries: ${_unityLinkLibraries}")
-                               endif()
-                               if (_unityLinkLibraries)
-                                       target_link_libraries(${_unityTargetName} ${_unityLinkLibraries})
-                               endif()
-                       endif()
-               endif()
-       endif()
-endfunction(cotire_target_link_libraries)
-
-function (cotire_cleanup _binaryDir _cotireIntermediateDirName _targetName)
-       if (_targetName)
-               file (GLOB_RECURSE _cotireFiles "${_binaryDir}/${_targetName}*.*")
-       else()
-               file (GLOB_RECURSE _cotireFiles "${_binaryDir}/*.*")
-       endif()
-       # filter files in intermediate directory
-       set (_filesToRemove "")
-       foreach (_file ${_cotireFiles})
-               get_filename_component(_dir "${_file}" PATH)
-               get_filename_component(_dirName "${_dir}" NAME)
-               if ("${_dirName}" STREQUAL "${_cotireIntermediateDirName}")
-                       list (APPEND _filesToRemove "${_file}")
-               endif()
-       endforeach()
-       if (_filesToRemove)
-               if (COTIRE_VERBOSE)
-                       message (STATUS "removing ${_filesToRemove}")
-               endif()
-               file (REMOVE ${_filesToRemove})
-       endif()
-endfunction()
-
-function (cotire_init_target _targetName)
-       if (COTIRE_TARGETS_FOLDER)
-               set_target_properties(${_targetName} PROPERTIES FOLDER "${COTIRE_TARGETS_FOLDER}")
-       endif()
-       if (MSVC_IDE)
-               set_target_properties(${_targetName} PROPERTIES EXCLUDE_FROM_DEFAULT_BUILD TRUE)
-       endif()
-endfunction()
-
-function (cotire_add_to_pch_all_target _pchTargetName)
-       set (_targetName "${COTIRE_PCH_ALL_TARGET_NAME}")
-       if (NOT TARGET "${_targetName}")
-               add_custom_target("${_targetName}" WORKING_DIRECTORY "${CMAKE_BINARY_DIR}" VERBATIM)
-               cotire_init_target("${_targetName}")
-       endif()
-       cotire_setup_clean_all_target()
-       add_dependencies(${_targetName} ${_pchTargetName})
-endfunction()
-
-function (cotire_add_to_unity_all_target _unityTargetName)
-       set (_targetName "${COTIRE_UNITY_BUILD_ALL_TARGET_NAME}")
-       if (NOT TARGET "${_targetName}")
-               add_custom_target("${_targetName}" WORKING_DIRECTORY "${CMAKE_BINARY_DIR}" VERBATIM)
-               cotire_init_target("${_targetName}")
-       endif()
-       cotire_setup_clean_all_target()
-       add_dependencies(${_targetName} ${_unityTargetName})
-endfunction()
-
-function (cotire_setup_clean_all_target)
-       set (_targetName "${COTIRE_CLEAN_ALL_TARGET_NAME}")
-       if (NOT TARGET "${_targetName}")
-               cotire_set_cmd_to_prologue(_cmds)
-               list (APPEND _cmds -P "${COTIRE_CMAKE_MODULE_FILE}" "cleanup" "${CMAKE_BINARY_DIR}" "${COTIRE_INTDIR}")
-               add_custom_target(${_targetName} COMMAND ${_cmds}
-                       WORKING_DIRECTORY "${CMAKE_BINARY_DIR}" COMMENT "Cleaning up all cotire generated files" VERBATIM)
-               cotire_init_target("${_targetName}")
-       endif()
-endfunction()
-
-function (cotire)
-       set(_options "")
-       set(_oneValueArgs SOURCE_DIR BINARY_DIR)
-       set(_multiValueArgs LANGUAGES CONFIGURATIONS)
-       cmake_parse_arguments(_option "${_options}" "${_oneValueArgs}" "${_multiValueArgs}" ${ARGN})
-       set (_targets ${_option_UNPARSED_ARGUMENTS})
-       if (NOT _option_SOURCE_DIR)
-               set (_option_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
-       endif()
-       if (NOT _option_BINARY_DIR)
-               set (_option_BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}")
-       endif()
-       foreach (_target ${_targets})
-               if (TARGET ${_target})
-                       cotire_target(${_target} LANGUAGES ${_option_LANGUAGES} CONFIGURATIONS ${_option_CONFIGURATIONS}
-                               SOURCE_DIR "${_option_SOURCE_DIR}" BINARY_DIR "${_option_BINARY_DIR}")
-               else()
-                       message (WARNING "cotire: ${_target} is not a target.")
-               endif()
-       endforeach()
-       foreach (_target ${_targets})
-               if (TARGET ${_target})
-                       cotire_target_link_libraries(${_target})
-               endif()
-       endforeach()
-endfunction()
-
-if (CMAKE_SCRIPT_MODE_FILE)
-
-       # cotire is being run in script mode
-       # locate -P on command args
-       set (COTIRE_ARGC -1)
-       foreach (_index RANGE ${CMAKE_ARGC})
-               if (COTIRE_ARGC GREATER -1)
-                       set (COTIRE_ARGV${COTIRE_ARGC} "${CMAKE_ARGV${_index}}")
-                       math (EXPR COTIRE_ARGC "${COTIRE_ARGC} + 1")
-               elseif ("${CMAKE_ARGV${_index}}" STREQUAL "-P")
-                       set (COTIRE_ARGC 0)
-               endif()
-       endforeach()
-
-       # include target script if available
-       if ("${COTIRE_ARGV2}" MATCHES "\\.cmake$")
-               # the included target scripts sets up additional variables relating to the target (e.g., COTIRE_TARGET_SOURCES)
-               include("${COTIRE_ARGV2}")
-       endif()
-
-       if (COTIRE_DEBUG)
-               message (STATUS "${COTIRE_ARGV0} ${COTIRE_ARGV1} ${COTIRE_ARGV2} ${COTIRE_ARGV3} ${COTIRE_ARGV4} ${COTIRE_ARGV5}")
-       endif()
-
-       if (WIN32)
-               # for MSVC, compiler IDs may not always be set correctly
-               if (MSVC)
-                       set (CMAKE_C_COMPILER_ID "MSVC")
-                       set (CMAKE_CXX_COMPILER_ID "MSVC")
-               endif()
-       endif()
-
-       if (NOT COTIRE_BUILD_TYPE)
-               set (COTIRE_BUILD_TYPE "None")
-       endif()
-       string (TOUPPER "${COTIRE_BUILD_TYPE}" _upperConfig)
-       set (_includeDirs ${COTIRE_TARGET_INCLUDE_DIRECTORIES_${_upperConfig}})
-       set (_systemIncludeDirs ${COTIRE_TARGET_SYSTEM_INCLUDE_DIRECTORIES_${_upperConfig}})
-       set (_compileDefinitions ${COTIRE_TARGET_COMPILE_DEFINITIONS_${_upperConfig}})
-       set (_compileFlags ${COTIRE_TARGET_COMPILE_FLAGS_${_upperConfig}})
-       # check if target has been cotired for actual build type COTIRE_BUILD_TYPE
-       list (FIND COTIRE_TARGET_CONFIGURATION_TYPES "${COTIRE_BUILD_TYPE}" _index)
-       if (_index GREATER -1)
-               set (_sources ${COTIRE_TARGET_SOURCES})
-               set (_sourcesDefinitions ${COTIRE_TARGET_SOURCES_COMPILE_DEFINITIONS_${_upperConfig}})
-       else()
-               if (COTIRE_DEBUG)
-                       message (STATUS "COTIRE_BUILD_TYPE=${COTIRE_BUILD_TYPE} not cotired (${COTIRE_TARGET_CONFIGURATION_TYPES})")
-               endif()
-               set (_sources "")
-               set (_sourcesDefinitions "")
-       endif()
-       set (_targetPreUndefs ${COTIRE_TARGET_PRE_UNDEFS})
-       set (_targetPostUndefs ${COTIRE_TARGET_POST_UNDEFS})
-       set (_sourcesPreUndefs ${COTIRE_TARGET_SOURCES_PRE_UNDEFS})
-       set (_sourcesPostUndefs ${COTIRE_TARGET_SOURCES_POST_UNDEFS})
-
-       if ("${COTIRE_ARGV1}" STREQUAL "unity")
-
-               cotire_select_unity_source_files("${COTIRE_ARGV3}" _sources ${_sources})
-               cotire_generate_unity_source(
-                       "${COTIRE_ARGV3}" ${_sources}
-                       LANGUAGE "${COTIRE_TARGET_LANGUAGE}"
-                       DEPENDS "${COTIRE_ARGV0}" "${COTIRE_ARGV2}"
-                       SOURCES_COMPILE_DEFINITIONS ${_sourcesDefinitions}
-                       PRE_UNDEFS ${_targetPreUndefs}
-                       POST_UNDEFS ${_targetPostUndefs}
-                       SOURCES_PRE_UNDEFS ${_sourcesPreUndefs}
-                       SOURCES_POST_UNDEFS ${_sourcesPostUndefs})
-
-       elseif ("${COTIRE_ARGV1}" STREQUAL "prefix")
-
-               set (_files "")
-               foreach (_index RANGE 4 ${COTIRE_ARGC})
-                       if (COTIRE_ARGV${_index})
-                               list (APPEND _files "${COTIRE_ARGV${_index}}")
-                       endif()
-               endforeach()
-
-               cotire_generate_prefix_header(
-                       "${COTIRE_ARGV3}" ${_files}
-                       COMPILER_EXECUTABLE "${CMAKE_${COTIRE_TARGET_LANGUAGE}_COMPILER}"
-                       COMPILER_ARG1 ${CMAKE_${COTIRE_TARGET_LANGUAGE}_COMPILER_ARG1}
-                       COMPILER_ID "${CMAKE_${COTIRE_TARGET_LANGUAGE}_COMPILER_ID}"
-                       COMPILER_VERSION "${COTIRE_${COTIRE_TARGET_LANGUAGE}_COMPILER_VERSION}"
-                       LANGUAGE "${COTIRE_TARGET_LANGUAGE}"
-                       DEPENDS "${COTIRE_ARGV0}" "${COTIRE_ARGV4}" ${COTIRE_TARGET_PREFIX_DEPENDS}
-                       IGNORE_PATH "${COTIRE_TARGET_IGNORE_PATH};${COTIRE_ADDITIONAL_PREFIX_HEADER_IGNORE_PATH}"
-                       INCLUDE_PATH ${COTIRE_TARGET_INCLUDE_PATH}
-                       IGNORE_EXTENSIONS "${CMAKE_${COTIRE_TARGET_LANGUAGE}_SOURCE_FILE_EXTENSIONS};${COTIRE_ADDITIONAL_PREFIX_HEADER_IGNORE_EXTENSIONS}"
-                       INCLUDE_SYSTEM_FLAG "${COTIRE_INCLUDE_SYSTEM_FLAG}"
-                       INCLUDE_DIRECTORIES ${_includeDirs}
-                       SYSTEM_INCLUDE_DIRECTORIES ${_systemIncludeDirs}
-                       COMPILE_DEFINITIONS ${_compileDefinitions}
-                       COMPILE_FLAGS ${_compileFlags})
-
-       elseif ("${COTIRE_ARGV1}" STREQUAL "precompile")
-
-               set (_files "")
-               foreach (_index RANGE 5 ${COTIRE_ARGC})
-                       if (COTIRE_ARGV${_index})
-                               list (APPEND _files "${COTIRE_ARGV${_index}}")
-                       endif()
-               endforeach()
-
-               cotire_precompile_prefix_header(
-                       "${COTIRE_ARGV3}" "${COTIRE_ARGV4}" "${COTIRE_ARGV5}"
-                       COMPILER_EXECUTABLE "${CMAKE_${COTIRE_TARGET_LANGUAGE}_COMPILER}"
-                       COMPILER_ARG1 ${CMAKE_${COTIRE_TARGET_LANGUAGE}_COMPILER_ARG1}
-                       COMPILER_ID "${CMAKE_${COTIRE_TARGET_LANGUAGE}_COMPILER_ID}"
-                       COMPILER_VERSION "${COTIRE_${COTIRE_TARGET_LANGUAGE}_COMPILER_VERSION}"
-                       LANGUAGE "${COTIRE_TARGET_LANGUAGE}"
-                       INCLUDE_SYSTEM_FLAG "${COTIRE_INCLUDE_SYSTEM_FLAG}"
-                       INCLUDE_DIRECTORIES ${_includeDirs}
-                       SYSTEM_INCLUDE_DIRECTORIES ${_systemIncludeDirs}
-                       COMPILE_DEFINITIONS ${_compileDefinitions}
-                       COMPILE_FLAGS ${_compileFlags})
-
-       elseif ("${COTIRE_ARGV1}" STREQUAL "combine")
-
-               if (COTIRE_TARGET_LANGUAGE)
-                       set (_startIndex 3)
-               else()
-                       set (_startIndex 2)
-               endif()
-               set (_files "")
-               foreach (_index RANGE ${_startIndex} ${COTIRE_ARGC})
-                       if (COTIRE_ARGV${_index})
-                               list (APPEND _files "${COTIRE_ARGV${_index}}")
-                       endif()
-               endforeach()
-               if (COTIRE_TARGET_LANGUAGE)
-                       cotire_generate_unity_source(${_files} LANGUAGE "${COTIRE_TARGET_LANGUAGE}")
-               else()
-                       cotire_generate_unity_source(${_files})
-               endif()
-
-       elseif ("${COTIRE_ARGV1}" STREQUAL "cleanup")
-
-               cotire_cleanup("${COTIRE_ARGV2}" "${COTIRE_ARGV3}" "${COTIRE_ARGV4}")
-
-       else()
-               message (FATAL_ERROR "cotire: unknown command \"${COTIRE_ARGV1}\".")
-       endif()
-
-else()
-
-       # cotire is being run in include mode
-       # set up all variable and property definitions
-
-       unset (COTIRE_C_COMPILER_VERSION CACHE)
-       unset (COTIRE_CXX_COMPILER_VERSION CACHE)
-
-       if (NOT DEFINED COTIRE_DEBUG_INIT)
-               if (DEFINED COTIRE_DEBUG)
-                       set (COTIRE_DEBUG_INIT ${COTIRE_DEBUG})
-               else()
-                       set (COTIRE_DEBUG_INIT FALSE)
-               endif()
-       endif()
-       option (COTIRE_DEBUG "Enable cotire debugging output?" ${COTIRE_DEBUG_INIT})
-
-       if (NOT DEFINED COTIRE_VERBOSE_INIT)
-               if (DEFINED COTIRE_VERBOSE)
-                       set (COTIRE_VERBOSE_INIT ${COTIRE_VERBOSE})
-               else()
-                       set (COTIRE_VERBOSE_INIT FALSE)
-               endif()
-       endif()
-       option (COTIRE_VERBOSE "Enable cotire verbose output?" ${COTIRE_VERBOSE_INIT})
-
-       set (COTIRE_ADDITIONAL_PREFIX_HEADER_IGNORE_EXTENSIONS "inc;inl;ipp" CACHE STRING
-               "Ignore headers with the listed file extensions from the generated prefix header.")
-
-       set (COTIRE_ADDITIONAL_PREFIX_HEADER_IGNORE_PATH "" CACHE STRING
-               "Ignore headers from these directories when generating the prefix header.")
-
-       set (COTIRE_UNITY_SOURCE_EXCLUDE_EXTENSIONS "m;mm" CACHE STRING
-               "Ignore sources with the listed file extensions from the generated unity source.")
-
-       set (COTIRE_MINIMUM_NUMBER_OF_TARGET_SOURCES "3" CACHE STRING
-               "Minimum number of sources in target required to enable use of precompiled header.")
-
-       if (NOT DEFINED COTIRE_MAXIMUM_NUMBER_OF_UNITY_INCLUDES_INIT)
-               if (DEFINED COTIRE_MAXIMUM_NUMBER_OF_UNITY_INCLUDES)
-                       set (COTIRE_MAXIMUM_NUMBER_OF_UNITY_INCLUDES_INIT ${COTIRE_MAXIMUM_NUMBER_OF_UNITY_INCLUDES})
-               elseif ("${CMAKE_GENERATOR}" MATCHES "JOM|Ninja|Visual Studio")
-                       # enable parallelization for generators that run multiple jobs by default
-                       set (COTIRE_MAXIMUM_NUMBER_OF_UNITY_INCLUDES_INIT "-j")
-               else()
-                       set (COTIRE_MAXIMUM_NUMBER_OF_UNITY_INCLUDES_INIT "0")
-               endif()
-       endif()
-       set (COTIRE_MAXIMUM_NUMBER_OF_UNITY_INCLUDES "${COTIRE_MAXIMUM_NUMBER_OF_UNITY_INCLUDES_INIT}" CACHE STRING
-               "Maximum number of source files to include in a single unity source file.")
-
-       if (NOT COTIRE_PREFIX_HEADER_FILENAME_SUFFIX)
-               set (COTIRE_PREFIX_HEADER_FILENAME_SUFFIX "_prefix")
-       endif()
-       if (NOT COTIRE_UNITY_SOURCE_FILENAME_SUFFIX)
-               set (COTIRE_UNITY_SOURCE_FILENAME_SUFFIX "_unity")
-       endif()
-       if (NOT COTIRE_INTDIR)
-               set (COTIRE_INTDIR "cotire")
-       endif()
-       if (NOT COTIRE_PCH_ALL_TARGET_NAME)
-               set (COTIRE_PCH_ALL_TARGET_NAME "all_pch")
-       endif()
-       if (NOT COTIRE_UNITY_BUILD_ALL_TARGET_NAME)
-               set (COTIRE_UNITY_BUILD_ALL_TARGET_NAME "all_unity")
-       endif()
-       if (NOT COTIRE_CLEAN_ALL_TARGET_NAME)
-               set (COTIRE_CLEAN_ALL_TARGET_NAME "clean_cotire")
-       endif()
-       if (NOT COTIRE_CLEAN_TARGET_SUFFIX)
-               set (COTIRE_CLEAN_TARGET_SUFFIX "_clean_cotire")
-       endif()
-       if (NOT COTIRE_PCH_TARGET_SUFFIX)
-               set (COTIRE_PCH_TARGET_SUFFIX "_pch")
-       endif()
-       if (NOT COTIRE_UNITY_BUILD_TARGET_SUFFIX)
-               set (COTIRE_UNITY_BUILD_TARGET_SUFFIX "_unity")
-       endif()
-       if (NOT DEFINED COTIRE_TARGETS_FOLDER)
-               set (COTIRE_TARGETS_FOLDER "cotire")
-       endif()
-       if (NOT DEFINED COTIRE_UNITY_OUTPUT_DIRECTORY)
-               if ("${CMAKE_GENERATOR}" MATCHES "Ninja")
-                       # generated Ninja build files do not work if the unity target produces the same output file as the cotired target
-                       set (COTIRE_UNITY_OUTPUT_DIRECTORY "unity")
-               else()
-                       set (COTIRE_UNITY_OUTPUT_DIRECTORY "")
-               endif()
-       endif()
-
-       # define cotire cache variables
-
-       define_property(
-               CACHED_VARIABLE PROPERTY "COTIRE_ADDITIONAL_PREFIX_HEADER_IGNORE_PATH"
-               BRIEF_DOCS "Ignore headers from these directories when generating the prefix header."
-               FULL_DOCS
-                       "The variable can be set to a semicolon separated list of include directories."
-                       "If a header file is found in one of these directories or sub-directories, it will be excluded from the generated prefix header."
-                       "If not defined, defaults to empty list."
-       )
-
-       define_property(
-               CACHED_VARIABLE PROPERTY "COTIRE_ADDITIONAL_PREFIX_HEADER_IGNORE_EXTENSIONS"
-               BRIEF_DOCS "Ignore includes with the listed file extensions from the generated prefix header."
-               FULL_DOCS
-                       "The variable can be set to a semicolon separated list of file extensions."
-                       "If a header file extension matches one in the list, it will be excluded from the generated prefix header."
-                       "Includes with an extension in CMAKE_<LANG>_SOURCE_FILE_EXTENSIONS are always ignored."
-                       "If not defined, defaults to inc;inl;ipp."
-       )
-
-       define_property(
-               CACHED_VARIABLE PROPERTY "COTIRE_UNITY_SOURCE_EXCLUDE_EXTENSIONS"
-               BRIEF_DOCS "Exclude sources with the listed file extensions from the generated unity source."
-               FULL_DOCS
-                       "The variable can be set to a semicolon separated list of file extensions."
-                       "If a source file extension matches one in the list, it will be excluded from the generated unity source file."
-                       "Source files with an extension in CMAKE_<LANG>_IGNORE_EXTENSIONS are always excluded."
-                       "If not defined, defaults to m;mm."
-       )
-
-       define_property(
-               CACHED_VARIABLE PROPERTY "COTIRE_MINIMUM_NUMBER_OF_TARGET_SOURCES"
-               BRIEF_DOCS "Minimum number of sources in target required to enable use of precompiled header."
-               FULL_DOCS
-                       "The variable can be set to an integer > 0."
-                       "If a target contains less than that number of source files, cotire will not enable the use of the precompiled header for the target."
-                       "If not defined, defaults to 3."
-       )
-
-       define_property(
-               CACHED_VARIABLE PROPERTY "COTIRE_MAXIMUM_NUMBER_OF_UNITY_INCLUDES"
-               BRIEF_DOCS "Maximum number of source files to include in a single unity source file."
-               FULL_DOCS
-                       "This may be set to an integer >= 0."
-                       "If 0, cotire will only create a single unity source file."
-                       "If a target contains more than that number of source files, cotire will create multiple unity source files for it."
-                       "Can be set to \"-j\" to optimize the count of unity source files for the number of available processor cores."
-                       "Can be set to \"-j jobs\" to optimize the number of unity source files for the given number of simultaneous jobs."
-                       "Is used to initialize the target property COTIRE_UNITY_SOURCE_MAXIMUM_NUMBER_OF_INCLUDES."
-                       "Defaults to \"-j\" for the generators Visual Studio, JOM or Ninja. Defaults to 0 otherwise."
-       )
-
-       # define cotire directory properties
-
-       define_property(
-               DIRECTORY PROPERTY "COTIRE_ENABLE_PRECOMPILED_HEADER"
-               BRIEF_DOCS "Modify build command of cotired targets added in this directory to make use of the generated precompiled header."
-               FULL_DOCS
-                       "See target property COTIRE_ENABLE_PRECOMPILED_HEADER."
-       )
-
-       define_property(
-               DIRECTORY PROPERTY "COTIRE_ADD_UNITY_BUILD"
-               BRIEF_DOCS "Add a new target that performs a unity build for cotired targets added in this directory."
-               FULL_DOCS
-                       "See target property COTIRE_ADD_UNITY_BUILD."
-       )
-
-       define_property(
-               DIRECTORY PROPERTY "COTIRE_ADD_CLEAN"
-               BRIEF_DOCS "Add a new target that cleans all cotire generated files for cotired targets added in this directory."
-               FULL_DOCS
-                       "See target property COTIRE_ADD_CLEAN."
-       )
-
-       define_property(
-               DIRECTORY PROPERTY "COTIRE_PREFIX_HEADER_IGNORE_PATH"
-               BRIEF_DOCS "Ignore headers from these directories when generating the prefix header."
-               FULL_DOCS
-                       "See target property COTIRE_PREFIX_HEADER_IGNORE_PATH."
-       )
-
-       define_property(
-               DIRECTORY PROPERTY "COTIRE_PREFIX_HEADER_INCLUDE_PATH"
-               BRIEF_DOCS "Honor headers from these directories when generating the prefix header."
-               FULL_DOCS
-                       "See target property COTIRE_PREFIX_HEADER_INCLUDE_PATH."
-       )
-
-       define_property(
-               DIRECTORY PROPERTY "COTIRE_UNITY_SOURCE_PRE_UNDEFS"
-               BRIEF_DOCS "Preprocessor undefs to place in the generated unity source file before the inclusion of each source file."
-               FULL_DOCS
-                       "See target property COTIRE_UNITY_SOURCE_PRE_UNDEFS."
-       )
-
-       define_property(
-               DIRECTORY PROPERTY "COTIRE_UNITY_SOURCE_POST_UNDEFS"
-               BRIEF_DOCS "Preprocessor undefs to place in the generated unity source file after the inclusion of each source file."
-               FULL_DOCS
-                       "See target property COTIRE_UNITY_SOURCE_POST_UNDEFS."
-       )
-
-       define_property(
-               DIRECTORY PROPERTY "COTIRE_UNITY_SOURCE_MAXIMUM_NUMBER_OF_INCLUDES"
-               BRIEF_DOCS "Maximum number of source files to include in a single unity source file."
-               FULL_DOCS
-                       "See target property COTIRE_UNITY_SOURCE_MAXIMUM_NUMBER_OF_INCLUDES."
-       )
-
-       define_property(
-               DIRECTORY PROPERTY "COTIRE_UNITY_LINK_LIBRARIES_INIT"
-               BRIEF_DOCS "Define strategy for setting up the unity target's link libraries."
-               FULL_DOCS
-                       "See target property COTIRE_UNITY_LINK_LIBRARIES_INIT."
-       )
-
-       # define cotire target properties
-
-       define_property(
-               TARGET PROPERTY "COTIRE_ENABLE_PRECOMPILED_HEADER" INHERITED
-               BRIEF_DOCS "Modify this target's build command to make use of the generated precompiled header."
-               FULL_DOCS
-                       "If this property is set to TRUE, cotire will modify the build command to make use of the generated precompiled header."
-                       "Irrespective of the value of this property, cotire will setup custom commands to generate the unity source and prefix header for the target."
-                       "For makefile based generators cotire will also set up a custom target to manually invoke the generation of the precompiled header."
-                       "The target name will be set to this target's name with the suffix _pch appended."
-                       "Inherited from directory."
-                       "Defaults to TRUE."
-       )
-
-       define_property(
-               TARGET PROPERTY "COTIRE_ADD_UNITY_BUILD" INHERITED
-               BRIEF_DOCS "Add a new target that performs a unity build for this target."
-               FULL_DOCS
-                       "If this property is set to TRUE, cotire creates a new target of the same type that uses the generated unity source file instead of the target sources."
-                       "Most of the relevant target properties will be copied from this target to the new unity build target."
-                       "Target dependencies and linked libraries have to be manually set up for the new unity build target."
-                       "The unity target name will be set to this target's name with the suffix _unity appended."
-                       "Inherited from directory."
-                       "Defaults to TRUE."
-       )
-
-       define_property(
-               TARGET PROPERTY "COTIRE_ADD_CLEAN" INHERITED
-               BRIEF_DOCS "Add a new target that cleans all cotire generated files for this target."
-               FULL_DOCS
-                       "If this property is set to TRUE, cotire creates a new target that clean all files (unity source, prefix header, precompiled header)."
-                       "The clean target name will be set to this target's name with the suffix _clean_cotire appended."
-                       "Inherited from directory."
-                       "Defaults to FALSE."
-       )
-
-       define_property(
-               TARGET PROPERTY "COTIRE_PREFIX_HEADER_IGNORE_PATH" INHERITED
-               BRIEF_DOCS "Ignore headers from these directories when generating the prefix header."
-               FULL_DOCS
-                       "The property can be set to a list of directories."
-                       "If a header file is found in one of these directories or sub-directories, it will be excluded from the generated prefix header."
-                       "Inherited from directory."
-                       "If not set, this property is initialized to \${CMAKE_SOURCE_DIR};\${CMAKE_BINARY_DIR}."
-       )
-
-       define_property(
-               TARGET PROPERTY "COTIRE_PREFIX_HEADER_INCLUDE_PATH" INHERITED
-               BRIEF_DOCS "Honor headers from these directories when generating the prefix header."
-               FULL_DOCS
-                       "The property can be set to a list of directories."
-                       "If a header file is found in one of these directories or sub-directories, it will be included in the generated prefix header."
-                       "If a header file is both selected by COTIRE_PREFIX_HEADER_IGNORE_PATH and COTIRE_PREFIX_HEADER_INCLUDE_PATH,"
-                       "the option which yields the closer relative path match wins."
-                       "Inherited from directory."
-                       "If not set, this property is initialized to the empty list."
-       )
-
-       define_property(
-               TARGET PROPERTY "COTIRE_UNITY_SOURCE_PRE_UNDEFS" INHERITED
-               BRIEF_DOCS "Preprocessor undefs to place in the generated unity source file before the inclusion of each target source file."
-               FULL_DOCS
-                       "This may be set to a semicolon-separated list of preprocessor symbols."
-                       "cotire will add corresponding #undef directives to the generated unit source file before each target source file."
-                       "Inherited from directory."
-                       "Defaults to empty string."
-       )
-
-       define_property(
-               TARGET PROPERTY "COTIRE_UNITY_SOURCE_POST_UNDEFS" INHERITED
-               BRIEF_DOCS "Preprocessor undefs to place in the generated unity source file after the inclusion of each target source file."
-               FULL_DOCS
-                       "This may be set to a semicolon-separated list of preprocessor symbols."
-                       "cotire will add corresponding #undef directives to the generated unit source file after each target source file."
-                       "Inherited from directory."
-                       "Defaults to empty string."
-       )
-
-       define_property(
-               TARGET PROPERTY "COTIRE_UNITY_SOURCE_MAXIMUM_NUMBER_OF_INCLUDES" INHERITED
-               BRIEF_DOCS "Maximum number of source files to include in a single unity source file."
-               FULL_DOCS
-                       "This may be set to an integer > 0."
-                       "If a target contains more than that number of source files, cotire will create multiple unity build files for it."
-                       "If not set, cotire will only create a single unity source file."
-                       "Inherited from directory."
-                       "Defaults to empty."
-       )
-
-       define_property(
-               TARGET PROPERTY "COTIRE_<LANG>_UNITY_SOURCE_INIT"
-               BRIEF_DOCS "User provided unity source file to be used instead of the automatically generated one."
-               FULL_DOCS
-                       "If set, cotire will only add the given file(s) to the generated unity source file."
-                       "If not set, cotire will add all the target source files to the generated unity source file."
-                       "The property can be set to a user provided unity source file."
-                       "Defaults to empty."
-       )
-
-       define_property(
-               TARGET PROPERTY "COTIRE_<LANG>_PREFIX_HEADER_INIT"
-               BRIEF_DOCS "User provided prefix header file to be used instead of the automatically generated one."
-               FULL_DOCS
-                       "If set, cotire will add the given header file(s) to the generated prefix header file."
-                       "If not set, cotire will generate a prefix header by tracking the header files included by the unity source file."
-                       "The property can be set to a user provided prefix header file (e.g., stdafx.h)."
-                       "Defaults to empty."
-       )
-
-       define_property(
-               TARGET PROPERTY "COTIRE_UNITY_LINK_LIBRARIES_INIT" INHERITED
-               BRIEF_DOCS "Define strategy for setting up unity target's link libraries."
-               FULL_DOCS
-                       "If this property is empty, the generated unity target's link libraries have to be set up manually."
-                       "If this property is set to COPY, the unity target's link libraries will be copied from this target."
-                       "If this property is set to COPY_UNITY, the unity target's link libraries will be copied from this target with considering existing unity targets."
-                       "Inherited from directory."
-                       "Defaults to empty."
-       )
-
-       define_property(
-               TARGET PROPERTY "COTIRE_<LANG>_UNITY_SOURCE"
-               BRIEF_DOCS "Read-only property. The generated <LANG> unity source file(s)."
-               FULL_DOCS
-                       "cotire sets this property to the path of the generated <LANG> single computation unit source file for the target."
-                       "Defaults to empty string."
-       )
-
-       define_property(
-               TARGET PROPERTY "COTIRE_<LANG>_PREFIX_HEADER"
-               BRIEF_DOCS "Read-only property. The generated <LANG> prefix header file."
-               FULL_DOCS
-                       "cotire sets this property to the full path of the generated <LANG> language prefix header for the target."
-                       "Defaults to empty string."
-       )
-
-       define_property(
-               TARGET PROPERTY "COTIRE_<LANG>_PRECOMPILED_HEADER"
-               BRIEF_DOCS "Read-only property. The generated <LANG> precompiled header file."
-               FULL_DOCS
-                       "cotire sets this property to the full path of the generated <LANG> language precompiled header binary for the target."
-                       "Defaults to empty string."
-       )
-
-       define_property(
-               TARGET PROPERTY "COTIRE_UNITY_TARGET_NAME"
-               BRIEF_DOCS "The name of the generated unity build target corresponding to this target."
-               FULL_DOCS
-                       "This property can be set to the desired name of the unity target that will be created by cotire."
-                       "If not set, the unity target name will be set to this target's name with the suffix _unity appended."
-                       "After this target has been processed by cotire, the property is set to the actual name of the generated unity target."
-                       "Defaults to empty string."
-       )
-
-       # define cotire source properties
-
-       define_property(
-               SOURCE PROPERTY "COTIRE_EXCLUDED"
-               BRIEF_DOCS "Do not modify source file's build command."
-               FULL_DOCS
-                       "If this property is set to TRUE, the source file's build command will not be modified to make use of the precompiled header."
-                       "The source file will also be excluded from the generated unity source file."
-                       "Source files that have their COMPILE_FLAGS property set will be excluded by default."
-                       "Defaults to FALSE."
-       )
-
-       define_property(
-               SOURCE PROPERTY "COTIRE_DEPENDENCY"
-               BRIEF_DOCS "Add this source file to dependencies of the automatically generated prefix header file."
-               FULL_DOCS
-                       "If this property is set to TRUE, the source file is added to dependencies of the generated prefix header file."
-                       "If the file is modified, cotire will re-generate the prefix header source upon build."
-                       "Defaults to FALSE."
-       )
-
-       define_property(
-               SOURCE PROPERTY "COTIRE_UNITY_SOURCE_PRE_UNDEFS"
-               BRIEF_DOCS "Preprocessor undefs to place in the generated unity source file before the inclusion of this source file."
-               FULL_DOCS
-                       "This may be set to a semicolon-separated list of preprocessor symbols."
-                       "cotire will add corresponding #undef directives to the generated unit source file before this file is included."
-                       "Defaults to empty string."
-       )
-
-       define_property(
-               SOURCE PROPERTY "COTIRE_UNITY_SOURCE_POST_UNDEFS"
-               BRIEF_DOCS "Preprocessor undefs to place in the generated unity source file after the inclusion of this source file."
-               FULL_DOCS
-                       "This may be set to a semicolon-separated list of preprocessor symbols."
-                       "cotire will add corresponding #undef directives to the generated unit source file after this file is included."
-                       "Defaults to empty string."
-       )
-
-       define_property(
-               SOURCE PROPERTY "COTIRE_START_NEW_UNITY_SOURCE"
-               BRIEF_DOCS "Start a new unity source file which includes this source file as the first one."
-               FULL_DOCS
-                       "If this property is set to TRUE, cotire will complete the current unity file and start a new one."
-                       "The new unity source file will include this source file as the first one."
-                       "This property essentially works as a separator for unity source files."
-                       "Defaults to FALSE."
-       )
-
-       define_property(
-               SOURCE PROPERTY "COTIRE_TARGET"
-               BRIEF_DOCS "Read-only property. Mark this source file as cotired for the given target."
-               FULL_DOCS
-                       "cotire sets this property to the name of target, that the source file's build command has been altered for."
-                       "Defaults to empty string."
-       )
-
-       message (STATUS "cotire ${COTIRE_CMAKE_MODULE_VERSION} loaded.")
-
-endif()
index eb5d0f15de2945b2f07e343eccaac22627589c77..f1e71061059e0eee2344fa51020d26b614ac20d2 100644 (file)
@@ -34,7 +34,6 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/CMake")
 option(DISABLE_WERROR "Build without -Werror" FALSE)
 option(ENABLE_SIGNALS "Build with UNIX signals" TRUE)
 option(ENABLE_DECODE "Build with libsigrokdecode" TRUE)
-option(ENABLE_COTIRE "Enable cotire" FALSE)
 option(ENABLE_TESTS "Enable unit tests" FALSE)
 option(STATIC_PKGDEPS_LIBS "Statically link to (pkg-config) libraries" FALSE)
 option(FORCE_QT4 "Force use of Qt4 even if Qt5 is available" FALSE)
@@ -393,11 +392,6 @@ if(WIN32)
        set_target_properties(${PROJECT_NAME} PROPERTIES LINK_FLAGS "-mwindows")
 endif()
 
-if(ENABLE_COTIRE)
-       include(cotire)
-       cotire(${PROJECT_NAME})
-endif()
-
 #===============================================================================
 #= Installation
 #-------------------------------------------------------------------------------