CMake: update cotire to 516d78476f

cmake_modules/cotire.cmake

@@ -3,7 +3,7 @@
 # See the cotire manual for usage hints.
 #
 #=============================================================================
-# Copyright 2012-2016 Sascha Kratky
+# Copyright 2012-2017 Sascha Kratky
 #
 # Permission is hereby granted, free of charge, to any person
 # obtaining a copy of this software and associated documentation
@@ -43,7 +43,7 @@ if (NOT CMAKE_SCRIPT_MODE_FILE)
 endif()
 
 set (COTIRE_CMAKE_MODULE_FILE "${CMAKE_CURRENT_LIST_FILE}")
-set (COTIRE_CMAKE_MODULE_VERSION "1.7.8")
+set (COTIRE_CMAKE_MODULE_VERSION "1.7.10")
 
 # activate select policies
 if (POLICY CMP0025)
@@ -106,6 +106,11 @@ if (POLICY CMP0054)
 	cmake_policy(SET CMP0054 NEW)
 endif()
 
+if (POLICY CMP0055)
+	# strict checking for break() command
+	cmake_policy(SET CMP0055 NEW)
+endif()
+
 include(CMakeParseArguments)
 include(ProcessorCount)
 
@@ -293,7 +298,7 @@ function (cotire_get_source_file_property_values _valuesVar _property)
 	set (${_valuesVar} ${_values} PARENT_SCOPE)
 endfunction()
 
-function (cotire_resolve_config_properites _configurations _propertiesVar)
+function (cotire_resolve_config_properties _configurations _propertiesVar)
 	set (_properties "")
 	foreach (_property ${ARGN})
 		if ("${_property}" MATCHES "<CONFIG>")
@@ -309,8 +314,8 @@ function (cotire_resolve_config_properites _configurations _propertiesVar)
 	set (${_propertiesVar} ${_properties} PARENT_SCOPE)
 endfunction()
 
-function (cotire_copy_set_properites _configurations _type _source _target)
-	cotire_resolve_config_properites("${_configurations}" _properties ${ARGN})
+function (cotire_copy_set_properties _configurations _type _source _target)
+	cotire_resolve_config_properties("${_configurations}" _properties ${ARGN})
 	foreach (_property ${_properties})
 		get_property(_isSet ${_type} ${_source} PROPERTY ${_property} SET)
 		if (_isSet)
@@ -320,13 +325,18 @@ function (cotire_copy_set_properites _configurations _type _source _target)
 	endforeach()
 endfunction()
 
-function (cotire_get_target_usage_requirements _target _targetRequirementsVar)
+function (cotire_get_target_usage_requirements _target _config _targetRequirementsVar)
 	set (_targetRequirements "")
 	get_target_property(_librariesToProcess ${_target} LINK_LIBRARIES)
 	while (_librariesToProcess)
 		# remove from head
 		list (GET _librariesToProcess 0 _library)
 		list (REMOVE_AT _librariesToProcess 0)
+		if (_library MATCHES "^\\$<\\$<CONFIG:${_config}>:([A-Za-z0-9_:-]+)>$")
+			set (_library "${CMAKE_MATCH_1}")
+		elseif (_config STREQUAL "None" AND _library MATCHES "^\\$<\\$<CONFIG:>:([A-Za-z0-9_:-]+)>$")
+			set (_library "${CMAKE_MATCH_1}")
+		endif()
 		if (TARGET ${_library})
 			list (FIND _targetRequirements ${_library} _index)
 			if (_index LESS 0)
@@ -441,7 +451,7 @@ function (cotire_get_target_compile_flags _config _language _target _flagsVar)
 	# interface compile options from linked library targets
 	if (_target)
 		set (_linkedTargets "")
-		cotire_get_target_usage_requirements(${_target} _linkedTargets)
+		cotire_get_target_usage_requirements(${_target} ${_config} _linkedTargets)
 		foreach (_linkedTarget ${_linkedTargets})
 			get_target_property(_targetOptions ${_linkedTarget} INTERFACE_COMPILE_OPTIONS)
 			if (_targetOptions)
@@ -450,22 +460,21 @@ function (cotire_get_target_compile_flags _config _language _target _flagsVar)
 		endforeach()
 	endif()
 	# handle language standard properties
-	if (_target)
-		get_target_property(_targetLanguageStandard ${_target} ${_language}_STANDARD)
-		get_target_property(_targetLanguageExtensions ${_target} ${_language}_EXTENSIONS)
-		get_target_property(_targetLanguageStandardRequired ${_target} ${_language}_STANDARD_REQUIRED)
-		if (_targetLanguageExtensions)
-			if (CMAKE_${_language}${_targetLanguageExtensions}_EXTENSION_COMPILE_OPTION)
-				list (APPEND _compileFlags "${CMAKE_${_language}${_targetLanguageExtensions}_EXTENSION_COMPILE_OPTION}")
-			endif()
-		elseif (_targetLanguageStandard)
-			if (_targetLanguageStandardRequired)
-				if (CMAKE_${_language}${_targetLanguageStandard}_STANDARD_COMPILE_OPTION)
-					list (APPEND _compileFlags "${CMAKE_${_language}${_targetLanguageStandard}_STANDARD_COMPILE_OPTION}")
+	if (CMAKE_${_language}_STANDARD_DEFAULT)
+		# used compiler supports language standard levels
+		if (_target)
+			get_target_property(_targetLanguageStandard ${_target} ${_language}_STANDARD)
+			if (_targetLanguageStandard)
+				set (_type "EXTENSION")
+				get_property(_isSet TARGET ${_target} PROPERTY ${_language}_EXTENSIONS SET)
+				if (_isSet)
+					get_target_property(_targetUseLanguageExtensions ${_target} ${_language}_EXTENSIONS)
+					if (NOT _targetUseLanguageExtensions)
+						set (_type "STANDARD")
+					endif()
 				endif()
-			else()
-				if (CMAKE_${_language}${_targetLanguageStandard}_EXTENSION_COMPILE_OPTION)
-					list (APPEND _compileFlags "${CMAKE_${_language}${_targetLanguageStandard}_EXTENSION_COMPILE_OPTION}")
+				if (CMAKE_${_language}${_targetLanguageStandard}_${_type}_COMPILE_OPTION)
+					list (APPEND _compileFlags "${CMAKE_${_language}${_targetLanguageStandard}_${_type}_COMPILE_OPTION}")
 				endif()
 			endif()
 		endif()
@@ -574,7 +583,7 @@ function (cotire_get_target_include_directories _config _language _target _inclu
 	# interface include directories from linked library targets
 	if (_target)
 		set (_linkedTargets "")
-		cotire_get_target_usage_requirements(${_target} _linkedTargets)
+		cotire_get_target_usage_requirements(${_target} ${_config} _linkedTargets)
 		foreach (_linkedTarget ${_linkedTargets})
 			get_target_property(_linkedTargetType ${_linkedTarget} TYPE)
 			if (CMAKE_INCLUDE_CURRENT_DIR_IN_INTERFACE AND NOT CMAKE_VERSION VERSION_LESS "3.4.0" AND
@@ -628,6 +637,25 @@ function (cotire_get_target_include_directories _config _language _target _inclu
 	if (CMAKE_${_language}_IMPLICIT_INCLUDE_DIRECTORIES)
 		list (REMOVE_ITEM _includeDirs ${CMAKE_${_language}_IMPLICIT_INCLUDE_DIRECTORIES})
 	endif()
+	if (WIN32 AND NOT MINGW)
+		# convert Windows paths in include directories to CMake paths
+		if (_includeDirs)
+			set (_paths "")
+			foreach (_dir ${_includeDirs})
+				file (TO_CMAKE_PATH "${_dir}" _path)
+				list (APPEND _paths "${_path}")
+			endforeach()
+			set (_includeDirs ${_paths})
+		endif()
+		if (_systemIncludeDirs)
+			set (_paths "")
+			foreach (_dir ${_systemIncludeDirs})
+				file (TO_CMAKE_PATH "${_dir}" _path)
+				list (APPEND _paths "${_path}")
+			endforeach()
+			set (_systemIncludeDirs ${_paths})
+		endif()
+	endif()
 	if (COTIRE_DEBUG AND _includeDirs)
 		message (STATUS "Target ${_target} include dirs: ${_includeDirs}")
 	endif()
@@ -685,7 +713,7 @@ function (cotire_get_target_compile_definitions _config _language _target _defin
 	endif()
 	# interface compile definitions from linked library targets
 	set (_linkedTargets "")
-	cotire_get_target_usage_requirements(${_target} _linkedTargets)
+	cotire_get_target_usage_requirements(${_target} ${_config} _linkedTargets)
 	foreach (_linkedTarget ${_linkedTargets})
 		get_target_property(_definitions ${_linkedTarget} INTERFACE_COMPILE_DEFINITIONS)
 		if (_definitions)
@@ -841,6 +869,9 @@ macro (cotire_set_cmd_to_prologue _cmdVar)
 		list (APPEND ${_cmdVar} "--warn-uninitialized")
 	endif()
 	list (APPEND ${_cmdVar} "-DCOTIRE_BUILD_TYPE:STRING=$<CONFIGURATION>")
+	if (XCODE)
+		list (APPEND ${_cmdVar} "-DXCODE:BOOL=TRUE")
+	endif()
 	if (COTIRE_VERBOSE)
 		list (APPEND ${_cmdVar} "-DCOTIRE_VERBOSE:BOOL=ON")
 	elseif("${CMAKE_GENERATOR}" MATCHES "Makefiles")
@@ -884,16 +915,16 @@ function (cotire_add_includes_to_cmd _cmdVar _language _includesVar _systemInclu
 		foreach (_include ${_includeDirs})
 			if (WIN32 AND CMAKE_${_language}_COMPILER_ID MATCHES "MSVC|Intel")
 				file (TO_NATIVE_PATH "${_include}" _include)
-				list (APPEND ${_cmdVar} "${CMAKE_INCLUDE_FLAG_${_language}}${CMAKE_INCLUDE_FLAG_${_language}_SEP}${_include}")
+				list (APPEND ${_cmdVar} "${CMAKE_INCLUDE_FLAG_${_language}}${CMAKE_INCLUDE_FLAG_SEP_${_language}}${_include}")
 			else()
 				set (_index -1)
 				if ("${CMAKE_INCLUDE_SYSTEM_FLAG_${_language}}" MATCHES ".+")
 					list (FIND ${_systemIncludesVar} "${_include}" _index)
 				endif()
 				if (_index GREATER -1)
-					list (APPEND ${_cmdVar} "${CMAKE_INCLUDE_SYSTEM_FLAG_${_language}}${_include}")
+					list (APPEND ${_cmdVar} "${CMAKE_INCLUDE_SYSTEM_FLAG_${_language}}${CMAKE_INCLUDE_FLAG_SEP_${_language}}${_include}")
 				else()
-					list (APPEND ${_cmdVar} "${CMAKE_INCLUDE_FLAG_${_language}}${CMAKE_INCLUDE_FLAG_${_language}_SEP}${_include}")
+					list (APPEND ${_cmdVar} "${CMAKE_INCLUDE_FLAG_${_language}}${CMAKE_INCLUDE_FLAG_SEP_${_language}}${_include}")
 				endif()
 			endif()
 		endforeach()
@@ -1184,7 +1215,7 @@ endfunction()
 
 function (cotire_scan_includes _includesVar)
 	set(_options "")
-	set(_oneValueArgs COMPILER_ID COMPILER_EXECUTABLE COMPILER_ARG1 COMPILER_VERSION LANGUAGE UNPARSED_LINES)
+	set(_oneValueArgs COMPILER_ID COMPILER_EXECUTABLE COMPILER_ARG1 COMPILER_VERSION LANGUAGE UNPARSED_LINES SCAN_RESULT)
 	set(_multiValueArgs COMPILE_DEFINITIONS COMPILE_FLAGS INCLUDE_DIRECTORIES SYSTEM_INCLUDE_DIRECTORIES
 		IGNORE_PATH INCLUDE_PATH IGNORE_EXTENSIONS INCLUDE_PRIORITY_PATH COMPILER_LAUNCHER)
 	cmake_parse_arguments(_option "${_options}" "${_oneValueArgs}" "${_multiValueArgs}" ${ARGN})
@@ -1257,6 +1288,9 @@ function (cotire_scan_includes _includesVar)
 	if (_option_UNPARSED_LINES)
 		set (${_option_UNPARSED_LINES} ${_unparsedLines} PARENT_SCOPE)
 	endif()
+	if (_option_SCAN_RESULT)
+		set (${_option_SCAN_RESULT} ${_result} PARENT_SCOPE)
+	endif()
 endfunction()
 
 macro (cotire_append_undefs _contentsVar)
@@ -1444,12 +1478,13 @@ function (cotire_generate_prefix_header _prefixFile)
 		INCLUDE_PATH ${_option_INCLUDE_PATH}
 		IGNORE_EXTENSIONS ${_option_IGNORE_EXTENSIONS}
 		INCLUDE_PRIORITY_PATH ${_option_INCLUDE_PRIORITY_PATH}
-		UNPARSED_LINES _unparsedLines)
+		UNPARSED_LINES _unparsedLines
+		SCAN_RESULT _scanResult)
 	cotire_generate_unity_source("${_prefixFile}"
 		PROLOGUE ${_prologue} EPILOGUE ${_epilogue} LANGUAGE "${_option_LANGUAGE}" ${_selectedHeaders})
 	set (_unparsedLinesFile "${_prefixFile}.log")
 	if (_unparsedLines)
-		if (COTIRE_VERBOSE OR NOT _selectedHeaders)
+		if (COTIRE_VERBOSE OR _scanResult OR NOT _selectedHeaders)
 			list (LENGTH _unparsedLines _skippedLineCount)
 			message (STATUS "${_skippedLineCount} line(s) skipped, see ${_unparsedLinesFile}")
 		endif()
@@ -1635,6 +1670,10 @@ function (cotire_add_pch_compilation_flags _language _compilerID _compilerVersio
 			get_filename_component(_pchName "${_pchFile}" NAME)
 			set (_xLanguage_C "c-header")
 			set (_xLanguage_CXX "c++-header")
+			set (_pchSuppressMessages FALSE)
+			if ("${CMAKE_${_language}_FLAGS}" MATCHES ".*-Wno-pch-messages.*")
+				set(_pchSuppressMessages TRUE)
+			endif()
 			if (_flags)
 				# append to list
 				if ("${_language}" STREQUAL "CXX")
@@ -1642,13 +1681,17 @@ function (cotire_add_pch_compilation_flags _language _compilerID _compilerVersio
 				endif()
 				list (APPEND _flags "-include" "${_prefixFile}" "-pch-dir" "${_pchDir}" "-pch-create" "${_pchName}" "-fsyntax-only" "${_hostFile}")
 				if (NOT "${_compilerVersion}" VERSION_LESS "13.1.0")
-					list (APPEND _flags "-Wpch-messages")
+					if (NOT _pchSuppressMessages)
+						list (APPEND _flags "-Wpch-messages")
+					endif()
 				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 "${_flags} -Wpch-messages")
+					if (NOT _pchSuppressMessages)
+						set (_flags "${_flags} -Wpch-messages")
+					endif()
 				endif()
 			endif()
 		endif()
@@ -1759,17 +1802,25 @@ function (cotire_add_prefix_pch_inclusion_flags _language _compilerID _compilerV
 			if (_pchFile)
 				get_filename_component(_pchDir "${_pchFile}" DIRECTORY)
 				get_filename_component(_pchName "${_pchFile}" NAME)
+				set (_pchSuppressMessages FALSE)
+				if ("${CMAKE_${_language}_FLAGS}" MATCHES ".*-Wno-pch-messages.*")
+					set(_pchSuppressMessages TRUE)
+				endif()
 				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")
+						if (NOT _pchSuppressMessages)
+							list (APPEND _flags "-Wpch-messages")
+						endif()
 					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 "${_flags} -Wpch-messages")
+						if (NOT _pchSuppressMessages)
+							set (_flags "${_flags} -Wpch-messages")
+						endif()
 					endif()
 				endif()
 			else()
@@ -1817,6 +1868,14 @@ function (cotire_precompile_prefix_header _prefixFile _pchFile _hostFile)
 	if (_option_COMPILER_ID MATCHES "MSVC")
 		# cl.exe messes with the output streams unless the environment variable VS_UNICODE_OUTPUT is cleared
 		unset (ENV{VS_UNICODE_OUTPUT})
+	elseif (_option_COMPILER_ID MATCHES "GNU|Clang")
+		if (_option_COMPILER_LAUNCHER MATCHES "ccache" OR
+			_option_COMPILER_EXECUTABLE MATCHES "ccache")
+			# Newer versions of Clang and GCC seem to embed a compilation timestamp into the precompiled header binary,
+			# which results in "file has been modified since the precompiled header was built" errors if ccache is used.
+			# We work around the problem by disabling ccache upon pre-compiling the prefix header.
+			set (ENV{CCACHE_DISABLE} "true")
+		endif()
 	endif()
 	execute_process(
 		COMMAND ${_cmd}
@@ -1856,10 +1915,31 @@ function (cotire_check_precompiled_header_support _language _target _msgVar)
 	endif()
 	get_target_property(_launcher ${_target} ${_language}_COMPILER_LAUNCHER)
 	if (CMAKE_${_language}_COMPILER MATCHES "ccache" OR _launcher MATCHES "ccache")
-		if (NOT "$ENV{CCACHE_SLOPPINESS}" MATCHES "time_macros|pch_defines")
-			set (${_msgVar}
-				"ccache requires the environment variable CCACHE_SLOPPINESS to be set to \"pch_defines,time_macros\"."
-				PARENT_SCOPE)
+		if (DEFINED ENV{CCACHE_SLOPPINESS})
+			if (NOT "$ENV{CCACHE_SLOPPINESS}" MATCHES "pch_defines" OR NOT "$ENV{CCACHE_SLOPPINESS}" MATCHES "time_macros")
+				set (${_msgVar}
+					"ccache requires the environment variable CCACHE_SLOPPINESS to be set to \"pch_defines,time_macros\"."
+					PARENT_SCOPE)
+			endif()
+		else()
+			if (_launcher MATCHES "ccache")
+				get_filename_component(_ccacheExe "${_launcher}" REALPATH)
+			else()
+				get_filename_component(_ccacheExe "${CMAKE_${_language}_COMPILER}" REALPATH)
+			endif()
+			execute_process(
+				COMMAND "${_ccacheExe}" "--print-config"
+				WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}"
+				RESULT_VARIABLE _result
+				OUTPUT_VARIABLE _ccacheConfig OUTPUT_STRIP_TRAILING_WHITESPACE
+				ERROR_QUIET)
+			if (_result OR NOT
+				_ccacheConfig MATCHES "sloppiness.*=.*time_macros" OR NOT
+				_ccacheConfig MATCHES "sloppiness.*=.*pch_defines")
+				set (${_msgVar}
+					"ccache requires configuration setting \"sloppiness\" to be set to \"pch_defines,time_macros\"."
+					PARENT_SCOPE)
+			endif()
 		endif()
 	endif()
 	if (APPLE)
@@ -2148,7 +2228,7 @@ function (cotire_generate_target_script _language _configurations _target _targe
 		XCODE MSVC CMAKE_GENERATOR CMAKE_BUILD_TYPE CMAKE_CONFIGURATION_TYPES
 		CMAKE_${_language}_COMPILER_ID CMAKE_${_language}_COMPILER_VERSION
 		CMAKE_${_language}_COMPILER_LAUNCHER CMAKE_${_language}_COMPILER CMAKE_${_language}_COMPILER_ARG1
-		CMAKE_INCLUDE_FLAG_${_language} CMAKE_INCLUDE_FLAG_${_language}_SEP
+		CMAKE_INCLUDE_FLAG_${_language} CMAKE_INCLUDE_FLAG_SEP_${_language}
 		CMAKE_INCLUDE_SYSTEM_FLAG_${_language}
 		CMAKE_${_language}_FRAMEWORK_SEARCH_FLAG
 		CMAKE_${_language}_SYSTEM_FRAMEWORK_SEARCH_FLAG
@@ -2206,14 +2286,18 @@ function (cotire_setup_pch_file_compilation _language _target _targetScript _pre
 			else()
 				file (RELATIVE_PATH _pchFileLogPath "${CMAKE_BINARY_DIR}" "${_pchFile}")
 			endif()
+			# make precompiled header compilation depend on the actual compiler executable used to force
+			# re-compilation when the compiler executable is updated. This prevents "created by a different GCC executable"
+			# warnings when the precompiled header is included.
+			get_filename_component(_realCompilerExe "${CMAKE_${_language}_COMPILER}" ABSOLUTE)
 			if (COTIRE_DEBUG)
-				message (STATUS "add_custom_command: OUTPUT ${_pchFile} ${_cmds} DEPENDS ${_prefixFile} IMPLICIT_DEPENDS ${_language} ${_prefixFile}")
+				message (STATUS "add_custom_command: OUTPUT ${_pchFile} ${_cmds} DEPENDS ${_prefixFile} ${_realCompilerExe} IMPLICIT_DEPENDS ${_language} ${_prefixFile}")
 			endif()
 			set_property (SOURCE "${_pchFile}" PROPERTY GENERATED TRUE)
 			add_custom_command(
 				OUTPUT "${_pchFile}"
 				COMMAND ${_cmds}
-				DEPENDS "${_prefixFile}"
+				DEPENDS "${_prefixFile}" "${_realCompilerExe}"
 				IMPLICIT_DEPENDS ${_language} "${_prefixFile}"
 				WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
 				COMMENT "Building ${_language} precompiled header ${_pchFileLogPath}"
@@ -2445,8 +2529,12 @@ function (cotire_setup_prefix_generation_command _language _target _targetScript
 	cotire_set_cmd_to_prologue(_prefixCmd)
 	list (APPEND _prefixCmd -P "${COTIRE_CMAKE_MODULE_FILE}" "prefix" "${_targetScript}" "${_prefixFile}" ${_unityFiles})
 	set_property (SOURCE "${_prefixFile}" PROPERTY GENERATED TRUE)
+	# make prefix header generation depend on the actual compiler executable used to force
+	# re-generation when the compiler executable is updated. This prevents "file not found"
+	# errors for compiler version specific system header files.
+	get_filename_component(_realCompilerExe "${CMAKE_${_language}_COMPILER}" ABSOLUTE)
 	if (COTIRE_DEBUG)
-		message (STATUS "add_custom_command: OUTPUT ${_prefixFile} COMMAND ${_prefixCmd} DEPENDS ${_unityFile} ${_dependencySources}")
+		message (STATUS "add_custom_command: OUTPUT ${_prefixFile} COMMAND ${_prefixCmd} DEPENDS ${_unityFile} ${_dependencySources} ${_realCompilerExe}")
 	endif()
 	if (MSVC_IDE)
 		file (TO_NATIVE_PATH "${_prefixFile}" _prefixFileLogPath)
@@ -2478,7 +2566,7 @@ function (cotire_setup_prefix_generation_command _language _target _targetScript
 	add_custom_command(
 		OUTPUT "${_prefixFile}" "${_prefixFile}.log"
 		COMMAND ${_prefixCmd}
-		DEPENDS ${_unityFiles} ${_dependencySources}
+		DEPENDS ${_unityFiles} ${_dependencySources} "${_realCompilerExe}"
 		COMMENT "${_comment}"
 		WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
 		VERBATIM)
@@ -2639,10 +2727,12 @@ function (cotire_choose_target_languages _target _targetLanguagesVar _wholeTarge
 			set (${_targetLanguagesVar} "" PARENT_SCOPE)
 			return()
 		endif()
-		if (_targetUsePCH AND "${_language}" MATCHES "^C|CXX$" AND NOT "${CMAKE_${_language}_COMPILER_ID}" STREQUAL "")
-			cotire_check_precompiled_header_support("${_language}" "${_target}" _disableMsg)
-			if (_disableMsg)
-				set (_targetUsePCH FALSE)
+		if (_targetUsePCH AND "${_language}" MATCHES "^C|CXX$" AND DEFINED CMAKE_${_language}_COMPILER_ID)
+			if (CMAKE_${_language}_COMPILER_ID)
+				cotire_check_precompiled_header_support("${_language}" "${_target}" _disableMsg)
+				if (_disableMsg)
+					set (_targetUsePCH FALSE)
+				endif()
 			endif()
 		endif()
 		set (_sourceFiles "")
@@ -2857,6 +2947,16 @@ function (cotire_setup_pch_target _languages _configurations _target)
 	endif()
 endfunction()
 
+function (cotire_filter_object_libraries _target _objectLibrariesVar)
+	set (_objectLibraries "")
+	foreach (_source ${ARGN})
+		if (_source MATCHES "^\\$<TARGET_OBJECTS:.+>$")
+			list (APPEND _objectLibraries "${_source}")
+		endif()
+	endforeach()
+	set (${_objectLibrariesVar} ${_objectLibraries} PARENT_SCOPE)
+endfunction()
+
 function (cotire_collect_unity_target_sources _target _languages _unityTargetSourcesVar)
 	get_target_property(_targetSourceFiles ${_target} SOURCES)
 	set (_unityTargetSources ${_targetSourceFiles})
@@ -2875,6 +2975,15 @@ function (cotire_collect_unity_target_sources _target _languages _unityTargetSou
 			list (APPEND _unityTargetSources ${_unityFiles})
 		endif()
 	endforeach()
+	get_target_property(_linkLibrariesStrategy ${_target} COTIRE_UNITY_LINK_LIBRARIES_INIT)
+	if ("${_linkLibrariesStrategy}" MATCHES "^COPY_UNITY$")
+		cotire_filter_object_libraries(${_target} _objectLibraries ${_targetSourceFiles})
+		if (_objectLibraries)
+			cotire_map_libraries("${_linkLibrariesStrategy}" _unityObjectLibraries ${_objectLibraries})
+			list (REMOVE_ITEM _unityTargetSources ${_objectLibraries})
+			list (APPEND _unityTargetSources ${_unityObjectLibraries})
+		endif()
+	endif()
 	set (${_unityTargetSourcesVar} ${_unityTargetSources} PARENT_SCOPE)
 endfunction()
 
@@ -2917,8 +3026,13 @@ function (cotire_setup_unity_build_target _languages _configurations _target)
 	if (_targetAutoMoc OR _targetAutoUic OR _targetAutoRcc)
 		# if the original target sources are subject to CMake's automatic Qt processing,
 		# also include implicitly generated <targetname>_automoc.cpp file
-		list (APPEND _unityTargetSources "${_target}_automoc.cpp")
-		set_property (SOURCE "${_target}_automoc.cpp" PROPERTY GENERATED TRUE)
+		if (CMAKE_VERSION VERSION_LESS "3.8.0")
+			list (APPEND _unityTargetSources "${_target}_automoc.cpp")
+			set_property (SOURCE "${_target}_automoc.cpp" PROPERTY GENERATED TRUE)
+		else()
+			list (APPEND _unityTargetSources "${_target}_autogen/moc_compilation.cpp")
+			set_property (SOURCE "${_target}_autogen/moc_compilation.cpp" PROPERTY GENERATED TRUE)
+		endif()
 	endif()
 	# prevent AUTOMOC, AUTOUIC and AUTORCC properties from being set when the unity target is created
 	set (CMAKE_AUTOMOC OFF)
@@ -2933,9 +3047,20 @@ function (cotire_setup_unity_build_target _languages _configurations _target)
 	else()
 		add_library(${_unityTargetName} ${_unityTargetSubType} EXCLUDE_FROM_ALL ${_unityTargetSources})
 	endif()
-	if (_targetAutoMoc OR _targetAutoUic OR _targetAutoRcc)
-		# depend on the original target's implicity generated <targetname>_automoc target
-		add_dependencies(${_unityTargetName} ${_target}_automoc)
+	if ("${CMAKE_GENERATOR}" MATCHES "Visual Studio")
+		# depend on original target's automoc target, if it exists
+		if (TARGET ${_target}_automoc)
+			add_dependencies(${_unityTargetName} ${_target}_automoc)
+		endif()
+	else()
+		if (_targetAutoMoc OR _targetAutoUic OR _targetAutoRcc)
+			# depend on the original target's implicity generated <targetname>_automoc target
+			if (CMAKE_VERSION VERSION_LESS "3.8.0")
+				add_dependencies(${_unityTargetName} ${_target}_automoc)
+			else()
+				add_dependencies(${_unityTargetName} ${_target}_autogen)
+			endif()
+		endif()
 	endif()
 	# copy output location properties
 	set (_outputDirProperties
@@ -2948,8 +3073,8 @@ function (cotire_setup_unity_build_target _languages _configurations _target)
 			set (_outputDir "${COTIRE_UNITY_OUTPUT_DIRECTORY}")
 		else()
 			# append relative COTIRE_UNITY_OUTPUT_DIRECTORY to target's actual output directory
-			cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName} ${_outputDirProperties})
-			cotire_resolve_config_properites("${_configurations}" _properties ${_outputDirProperties})
+			cotire_copy_set_properties("${_configurations}" TARGET ${_target} ${_unityTargetName} ${_outputDirProperties})
+			cotire_resolve_config_properties("${_configurations}" _properties ${_outputDirProperties})
 			foreach (_property ${_properties})
 				get_property(_outputDir TARGET ${_target} PROPERTY ${_property})
 				if (_outputDir)
@@ -2969,11 +3094,11 @@ function (cotire_setup_unity_build_target _languages _configurations _target)
 				RUNTIME_OUTPUT_DIRECTORY "${_outputDir}")
 		endif()
 	else()
-		cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName}
+		cotire_copy_set_properties("${_configurations}" TARGET ${_target} ${_unityTargetName}
 			${_outputDirProperties})
 	endif()
 	# copy output name
-	cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName}
+	cotire_copy_set_properties("${_configurations}" TARGET ${_target} ${_unityTargetName}
 		ARCHIVE_OUTPUT_NAME ARCHIVE_OUTPUT_NAME_<CONFIG>
 		LIBRARY_OUTPUT_NAME LIBRARY_OUTPUT_NAME_<CONFIG>
 		OUTPUT_NAME OUTPUT_NAME_<CONFIG>
@@ -2981,7 +3106,7 @@ function (cotire_setup_unity_build_target _languages _configurations _target)
 		PREFIX <CONFIG>_POSTFIX SUFFIX
 		IMPORT_PREFIX IMPORT_SUFFIX)
 	# copy compile stuff
-	cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName}
+	cotire_copy_set_properties("${_configurations}" TARGET ${_target} ${_unityTargetName}
 		COMPILE_DEFINITIONS COMPILE_DEFINITIONS_<CONFIG>
 		COMPILE_FLAGS COMPILE_OPTIONS
 		Fortran_FORMAT Fortran_MODULE_DIRECTORY
@@ -2990,14 +3115,15 @@ function (cotire_setup_unity_build_target _languages _configurations _target)
 		POSITION_INDEPENDENT_CODE
 		C_COMPILER_LAUNCHER CXX_COMPILER_LAUNCHER
 		C_INCLUDE_WHAT_YOU_USE CXX_INCLUDE_WHAT_YOU_USE
-		C_VISIBILITY_PRESET CXX_VISIBILITY_PRESET VISIBILITY_INLINES_HIDDEN)
+		C_VISIBILITY_PRESET CXX_VISIBILITY_PRESET VISIBILITY_INLINES_HIDDEN
+		C_CLANG_TIDY CXX_CLANG_TIDY)
 	# copy compile features
-	cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName}
+	cotire_copy_set_properties("${_configurations}" TARGET ${_target} ${_unityTargetName}
 		C_EXTENSIONS C_STANDARD C_STANDARD_REQUIRED
 		CXX_EXTENSIONS CXX_STANDARD CXX_STANDARD_REQUIRED
 		COMPILE_FEATURES)
 	# copy interface stuff
-	cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName}
+	cotire_copy_set_properties("${_configurations}" TARGET ${_target} ${_unityTargetName}
 		COMPATIBLE_INTERFACE_BOOL COMPATIBLE_INTERFACE_NUMBER_MAX COMPATIBLE_INTERFACE_NUMBER_MIN
 		COMPATIBLE_INTERFACE_STRING
 		INTERFACE_COMPILE_DEFINITIONS INTERFACE_COMPILE_FEATURES INTERFACE_COMPILE_OPTIONS
@@ -3005,7 +3131,7 @@ function (cotire_setup_unity_build_target _languages _configurations _target)
 		INTERFACE_POSITION_INDEPENDENT_CODE INTERFACE_SYSTEM_INCLUDE_DIRECTORIES
 		INTERFACE_AUTOUIC_OPTIONS NO_SYSTEM_FROM_IMPORTED)
 	# copy link stuff
-	cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName}
+	cotire_copy_set_properties("${_configurations}" TARGET ${_target} ${_unityTargetName}
 		BUILD_WITH_INSTALL_RPATH INSTALL_RPATH INSTALL_RPATH_USE_LINK_PATH SKIP_BUILD_RPATH
 		LINKER_LANGUAGE LINK_DEPENDS LINK_DEPENDS_NO_SHARED
 		LINK_FLAGS LINK_FLAGS_<CONFIG>
@@ -3013,18 +3139,19 @@ function (cotire_setup_unity_build_target _languages _configurations _target)
 		LINK_INTERFACE_MULTIPLICITY LINK_INTERFACE_MULTIPLICITY_<CONFIG>
 		LINK_SEARCH_START_STATIC LINK_SEARCH_END_STATIC
 		STATIC_LIBRARY_FLAGS STATIC_LIBRARY_FLAGS_<CONFIG>
-		NO_SONAME SOVERSION VERSION)
+		NO_SONAME SOVERSION VERSION
+		LINK_WHAT_YOU_USE BUILD_RPATH)
 	# copy cmake stuff
-	cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName}
+	cotire_copy_set_properties("${_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} ${_unityTargetName}
+	cotire_copy_set_properties("${_configurations}" TARGET ${_target} ${_unityTargetName}
 		BUNDLE BUNDLE_EXTENSION FRAMEWORK FRAMEWORK_VERSION INSTALL_NAME_DIR
 		MACOSX_BUNDLE MACOSX_BUNDLE_INFO_PLIST MACOSX_FRAMEWORK_INFO_PLIST MACOSX_RPATH
 		OSX_ARCHITECTURES OSX_ARCHITECTURES_<CONFIG> PRIVATE_HEADER PUBLIC_HEADER RESOURCE XCTEST
-		IOS_INSTALL_COMBINED)
+		IOS_INSTALL_COMBINED XCODE_EXPLICIT_FILE_TYPE XCODE_PRODUCT_TYPE)
 	# copy Windows platform specific stuff
-	cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName}
+	cotire_copy_set_properties("${_configurations}" TARGET ${_target} ${_unityTargetName}
 		GNUtoMS
 		COMPILE_PDB_NAME COMPILE_PDB_NAME_<CONFIG>
 		COMPILE_PDB_OUTPUT_DIRECTORY COMPILE_PDB_OUTPUT_DIRECTORY_<CONFIG>
@@ -3036,9 +3163,11 @@ function (cotire_setup_unity_build_target _languages _configurations _target)
 		VS_SCC_AUXPATH VS_SCC_LOCALPATH VS_SCC_PROJECTNAME VS_SCC_PROVIDER
 		VS_WINDOWS_TARGET_PLATFORM_MIN_VERSION
 		VS_WINRT_COMPONENT VS_WINRT_EXTENSIONS VS_WINRT_REFERENCES
-		WIN32_EXECUTABLE WINDOWS_EXPORT_ALL_SYMBOLS)
+		WIN32_EXECUTABLE WINDOWS_EXPORT_ALL_SYMBOLS
+		DEPLOYMENT_REMOTE_DIRECTORY VS_CONFIGURATION_TYPE
+		VS_SDK_REFERENCES VS_USER_PROPS VS_DEBUGGER_WORKING_DIRECTORY)
 	# copy Android platform specific stuff
-	cotire_copy_set_properites("${_configurations}" TARGET ${_target} ${_unityTargetName}
+	cotire_copy_set_properties("${_configurations}" TARGET ${_target} ${_unityTargetName}
 		ANDROID_API ANDROID_API_MIN ANDROID_GUI
 		ANDROID_ANT_ADDITIONAL_OPTIONS ANDROID_ARCH ANDROID_ASSETS_DIRECTORIES
 		ANDROID_JAR_DEPENDENCIES ANDROID_JAR_DIRECTORIES ANDROID_JAVA_SOURCE_DIR
@@ -3151,9 +3280,15 @@ function (cotire_map_libraries _strategy _mappedLibrariesVar)
 		if (_library MATCHES "^\\$<LINK_ONLY:(.+)>$")
 			set (_libraryName "${CMAKE_MATCH_1}")
 			set (_linkOnly TRUE)
+			set (_objectLibrary FALSE)
+		elseif (_library MATCHES "^\\$<TARGET_OBJECTS:(.+)>$")
+			set (_libraryName "${CMAKE_MATCH_1}")
+			set (_linkOnly FALSE)
+			set (_objectLibrary TRUE)
 		else()
 			set (_libraryName "${_library}")
 			set (_linkOnly FALSE)
+			set (_objectLibrary FALSE)
 		endif()
 		if ("${_strategy}" MATCHES "COPY_UNITY")
 			cotire_is_target_supported(${_libraryName} _isSupported)
@@ -3163,6 +3298,8 @@ function (cotire_map_libraries _strategy _mappedLibrariesVar)
 				if (TARGET "${_libraryUnityTargetName}")
 					if (_linkOnly)
 						list (APPEND _mappedLibraries "$<LINK_ONLY:${_libraryUnityTargetName}>")
+					elseif (_objectLibrary)
+						list (APPEND _mappedLibraries "$<TARGET_OBJECTS:${_libraryUnityTargetName}>")
 					else()
 						list (APPEND _mappedLibraries "${_libraryUnityTargetName}")
 					endif()