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35c48e1270
Add the function cmake_expand_imported_targets() to expand imported targets in a list of libraries into their on-disk file names for a particular configuration. Adapt the implementation from KDE's HANDLE_IMPORTED_TARGETS_IN_CMAKE_REQUIRED_LIBRARIES which has been in use for over 2 years. Call the function from all the Check*.cmake macros to handle imported targets named in CMAKE_REQUIRED_LIBRARIES. Alex
130 lines
6.1 KiB
CMake
130 lines
6.1 KiB
CMake
# CMAKE_EXPAND_IMPORTED_TARGETS(<var> LIBRARIES lib1 lib2...libN
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# [CONFIGURATION <config>] )
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#
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# CMAKE_EXPAND_IMPORTED_TARGETS() takes a list of libraries and replaces
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# all imported targets contained in this list with their actual file paths
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# of the referenced libraries on disk, including the libraries from their
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# link interfaces.
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# If a CONFIGURATION is given, it uses the respective configuration of the
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# imported targets if it exists. If no CONFIGURATION is given, it uses
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# the first configuration from ${CMAKE_CONFIGURATION_TYPES} if set, otherwise
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# ${CMAKE_BUILD_TYPE}.
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# This macro is used by all Check*.cmake files which use
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# TRY_COMPILE() or TRY_RUN() and support CMAKE_REQUIRED_LIBRARIES , so that
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# these checks support imported targets in CMAKE_REQUIRED_LIBRARIES:
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# cmake_expand_imported_targets(expandedLibs LIBRARIES ${CMAKE_REQUIRED_LIBRARIES}
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# CONFIGURATION "${CMAKE_TRY_COMPILE_CONFIGURATION}" )
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#=============================================================================
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# Copyright 2012 Kitware, Inc.
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# Copyright 2009-2012 Alexander Neundorf <neundorf@kde.org>
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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# License text for the above reference.)
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include(CMakeParseArguments)
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function(CMAKE_EXPAND_IMPORTED_TARGETS _RESULT )
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set(options )
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set(oneValueArgs CONFIGURATION )
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set(multiValueArgs LIBRARIES )
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cmake_parse_arguments(CEIT "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
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if(CEIT_UNPARSED_ARGUMENTS)
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message(FATAL_ERROR "Unknown keywords given to CMAKE_EXPAND_IMPORTED_TARGETS(): \"${CEIT_UNPARSED_ARGUMENTS}\"")
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endif()
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if(NOT CEIT_CONFIGURATION)
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if(CMAKE_CONFIGURATION_TYPES)
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list(GET CMAKE_CONFIGURATION_TYPES 0 CEIT_CONFIGURATION)
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else()
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set(CEIT_CONFIGURATION ${CMAKE_BUILD_TYPE})
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endif()
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endif()
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# handle imported library targets
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set(_CCSR_REQ_LIBS ${CEIT_LIBRARIES})
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set(_CHECK_FOR_IMPORTED_TARGETS TRUE)
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set(_CCSR_LOOP_COUNTER 0)
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while(_CHECK_FOR_IMPORTED_TARGETS)
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math(EXPR _CCSR_LOOP_COUNTER "${_CCSR_LOOP_COUNTER} + 1 ")
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set(_CCSR_NEW_REQ_LIBS )
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set(_CHECK_FOR_IMPORTED_TARGETS FALSE)
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foreach(_CURRENT_LIB ${_CCSR_REQ_LIBS})
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get_target_property(_importedConfigs "${_CURRENT_LIB}" IMPORTED_CONFIGURATIONS)
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if (_importedConfigs)
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# message(STATUS "Detected imported target ${_CURRENT_LIB}")
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# Ok, so this is an imported target.
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# First we get the imported configurations.
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# Then we get the location of the actual library on disk of the first configuration.
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# then we'll get its link interface libraries property,
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# iterate through it and replace all imported targets we find there
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# with there actual location.
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# guard against infinite loop: abort after 100 iterations ( 100 is arbitrary chosen)
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if ("${_CCSR_LOOP_COUNTER}" LESS 100)
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set(_CHECK_FOR_IMPORTED_TARGETS TRUE)
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# else ("${_CCSR_LOOP_COUNTER}" LESS 1)
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# message(STATUS "********* aborting loop, counter : ${_CCSR_LOOP_COUNTER}")
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endif ("${_CCSR_LOOP_COUNTER}" LESS 100)
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# if one of the imported configurations equals ${CMAKE_TRY_COMPILE_CONFIGURATION},
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# use it, otherwise simply use the first one:
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list(FIND _importedConfigs "${CEIT_CONFIGURATION}" _configIndexToUse)
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if("${_configIndexToUse}" EQUAL -1)
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set(_configIndexToUse 0)
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endif("${_configIndexToUse}" EQUAL -1)
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list(GET _importedConfigs ${_configIndexToUse} _importedConfigToUse)
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get_target_property(_importedLocation "${_CURRENT_LIB}" IMPORTED_LOCATION_${_importedConfigToUse})
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get_target_property(_linkInterfaceLibs "${_CURRENT_LIB}" IMPORTED_LINK_INTERFACE_LIBRARIES_${_importedConfigToUse} )
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list(APPEND _CCSR_NEW_REQ_LIBS "${_importedLocation}")
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# message(STATUS "Appending lib ${_CURRENT_LIB} as ${_importedLocation}")
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if(_linkInterfaceLibs)
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foreach(_currentLinkInterfaceLib ${_linkInterfaceLibs})
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# message(STATUS "Appending link interface lib ${_currentLinkInterfaceLib}")
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if(_currentLinkInterfaceLib)
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list(APPEND _CCSR_NEW_REQ_LIBS "${_currentLinkInterfaceLib}" )
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endif(_currentLinkInterfaceLib)
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endforeach(_currentLinkInterfaceLib "${_linkInterfaceLibs}")
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endif(_linkInterfaceLibs)
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else(_importedConfigs)
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# "Normal" libraries are just used as they are.
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list(APPEND _CCSR_NEW_REQ_LIBS "${_CURRENT_LIB}" )
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# message(STATUS "Appending lib directly: ${_CURRENT_LIB}")
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endif(_importedConfigs)
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endforeach(_CURRENT_LIB ${_CCSR_REQ_LIBS})
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set(_CCSR_REQ_LIBS ${_CCSR_NEW_REQ_LIBS} )
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endwhile(_CHECK_FOR_IMPORTED_TARGETS)
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# Finally we iterate once more over all libraries. This loop only removes
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# all remaining imported target names (there shouldn't be any left anyway).
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set(_CCSR_NEW_REQ_LIBS )
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foreach(_CURRENT_LIB ${_CCSR_REQ_LIBS})
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get_target_property(_importedConfigs "${_CURRENT_LIB}" IMPORTED_CONFIGURATIONS)
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if (NOT _importedConfigs)
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list(APPEND _CCSR_NEW_REQ_LIBS "${_CURRENT_LIB}" )
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# message(STATUS "final: appending ${_CURRENT_LIB}")
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else (NOT _importedConfigs)
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# message(STATUS "final: skipping ${_CURRENT_LIB}")
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endif (NOT _importedConfigs)
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endforeach(_CURRENT_LIB ${_CCSR_REQ_LIBS})
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# message(STATUS "setting -${_RESULT}- to -${_CCSR_NEW_REQ_LIBS}-")
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set(${_RESULT} "${_CCSR_NEW_REQ_LIBS}" PARENT_SCOPE)
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endfunction()
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