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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file LICENSE.rst or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
CMakeExpandImportedTargets
--------------------------
.. deprecated:: 3.4
This module should no longer be used.
It was once needed to replace :ref:`Imported Targets` with their underlying
libraries referenced on disk for use with the :command:`try_compile` and
:command:`try_run` commands. These commands now support imported targets in
their ``LINK_LIBRARIES`` options (since CMake 2.8.11 for
:command:`try_compile` command and since CMake 3.2 for :command:`try_run`
command).
Load this module in a CMake project with:
.. code-block:: cmake
include(CMakeExpandImportedTargets)
.. note::
This module does not support the policy :policy:`CMP0022` ``NEW`` behavior,
nor does it use the :prop_tgt:`INTERFACE_LINK_LIBRARIES` property, because
:manual:`generator expressions <cmake-generator-expressions(7)>` cannot be
evaluated at the configuration phase.
Commands
^^^^^^^^^
This module provides the following command:
.. command:: cmake_expand_imported_targets
Expands all imported targets in a given list of libraries to their
corresponding file paths on disk and stores the resulting list in a local
variable:
.. code-block:: cmake
cmake_expand_imported_targets(
<result-var>
LIBRARIES <libs>...
[CONFIGURATION <config>]
)
The arguments are:
``<result-var>``
Name of a CMake variable containing the resulting list of file paths.
``LIBRARIES <libs>...``
A :ref:`semicolon-separated list <CMake Language Lists>` of system and
imported targets. Imported targets in this list are replaced with their
corresponding library file paths, including libraries from their link
interfaces.
``CONFIGURATION <config>``
If this option is given, it uses the respective build configuration
``<config>`` of the imported targets if it exists. If omitted, it defaults
to the first entry in the :variable:`CMAKE_CONFIGURATION_TYPES` variable, or
falls back to :variable:`CMAKE_BUILD_TYPE` if ``CMAKE_CONFIGURATION_TYPES``
is not set.
Examples
^^^^^^^^
Using this module to get a list of library paths:
.. code-block:: cmake
include(CMakeExpandImportedTargets)
cmake_expand_imported_targets(
expandedLibs
LIBRARIES ${CMAKE_REQUIRED_LIBRARIES}
CONFIGURATION "${CMAKE_TRY_COMPILE_CONFIGURATION}"
)
#]=======================================================================]
function(CMAKE_EXPAND_IMPORTED_TARGETS _RESULT )
set(options )
set(oneValueArgs CONFIGURATION )
set(multiValueArgs LIBRARIES )
cmake_parse_arguments(CEIT "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
if(CEIT_UNPARSED_ARGUMENTS)
message(FATAL_ERROR "Unknown keywords given to CMAKE_EXPAND_IMPORTED_TARGETS(): \"${CEIT_UNPARSED_ARGUMENTS}\"")
endif()
if(NOT CEIT_CONFIGURATION)
# Would be better to test GENERATOR_IS_MULTI_CONFIG global property,
# but the documented behavior specifically says we check
# CMAKE_CONFIGURATION_TYPES and fall back to CMAKE_BUILD_TYPE if no
# config types are defined.
if(CMAKE_CONFIGURATION_TYPES)
list(GET CMAKE_CONFIGURATION_TYPES 0 CEIT_CONFIGURATION)
else()
set(CEIT_CONFIGURATION ${CMAKE_BUILD_TYPE})
endif()
endif()
# handle imported library targets
set(_CCSR_REQ_LIBS ${CEIT_LIBRARIES})
set(_CHECK_FOR_IMPORTED_TARGETS TRUE)
set(_CCSR_LOOP_COUNTER 0)
while(_CHECK_FOR_IMPORTED_TARGETS)
math(EXPR _CCSR_LOOP_COUNTER "${_CCSR_LOOP_COUNTER} + 1 ")
set(_CCSR_NEW_REQ_LIBS )
set(_CHECK_FOR_IMPORTED_TARGETS FALSE)
foreach(_CURRENT_LIB ${_CCSR_REQ_LIBS})
if(TARGET "${_CURRENT_LIB}")
get_target_property(_importedConfigs "${_CURRENT_LIB}" IMPORTED_CONFIGURATIONS)
else()
set(_importedConfigs "")
endif()
if (_importedConfigs)
# message(STATUS "Detected imported target ${_CURRENT_LIB}")
# Ok, so this is an imported target.
# First we get the imported configurations.
# Then we get the location of the actual library on disk of the first configuration.
# then we'll get its link interface libraries property,
# iterate through it and replace all imported targets we find there
# with there actual location.
# guard against infinite loop: abort after 100 iterations ( 100 is arbitrary chosen)
if ("${_CCSR_LOOP_COUNTER}" LESS 100)
set(_CHECK_FOR_IMPORTED_TARGETS TRUE)
# else ()
# message(STATUS "********* aborting loop, counter : ${_CCSR_LOOP_COUNTER}")
endif ()
# if one of the imported configurations equals ${CMAKE_TRY_COMPILE_CONFIGURATION},
# use it, otherwise simply use the first one:
list(FIND _importedConfigs "${CEIT_CONFIGURATION}" _configIndexToUse)
if("${_configIndexToUse}" EQUAL -1)
set(_configIndexToUse 0)
endif()
list(GET _importedConfigs ${_configIndexToUse} _importedConfigToUse)
get_target_property(_importedLocation "${_CURRENT_LIB}" IMPORTED_LOCATION_${_importedConfigToUse})
get_target_property(_linkInterfaceLibs "${_CURRENT_LIB}" IMPORTED_LINK_INTERFACE_LIBRARIES_${_importedConfigToUse} )
list(APPEND _CCSR_NEW_REQ_LIBS "${_importedLocation}")
# message(STATUS "Appending lib ${_CURRENT_LIB} as ${_importedLocation}")
if(_linkInterfaceLibs)
foreach(_currentLinkInterfaceLib ${_linkInterfaceLibs})
# message(STATUS "Appending link interface lib ${_currentLinkInterfaceLib}")
if(_currentLinkInterfaceLib)
list(APPEND _CCSR_NEW_REQ_LIBS "${_currentLinkInterfaceLib}" )
endif()
endforeach()
endif()
else()
# "Normal" libraries are just used as they are.
list(APPEND _CCSR_NEW_REQ_LIBS "${_CURRENT_LIB}" )
# message(STATUS "Appending lib directly: ${_CURRENT_LIB}")
endif()
endforeach()
set(_CCSR_REQ_LIBS ${_CCSR_NEW_REQ_LIBS} )
endwhile()
# Finally we iterate once more over all libraries. This loop only removes
# all remaining imported target names (there shouldn't be any left anyway).
set(_CCSR_NEW_REQ_LIBS )
foreach(_CURRENT_LIB ${_CCSR_REQ_LIBS})
if(TARGET "${_CURRENT_LIB}")
get_target_property(_importedConfigs "${_CURRENT_LIB}" IMPORTED_CONFIGURATIONS)
else()
set(_importedConfigs "")
endif()
if (NOT _importedConfigs)
list(APPEND _CCSR_NEW_REQ_LIBS "${_CURRENT_LIB}" )
# message(STATUS "final: appending ${_CURRENT_LIB}")
# else ()
# message(STATUS "final: skipping ${_CURRENT_LIB}")
endif ()
endforeach()
# message(STATUS "setting -${_RESULT}- to -${_CCSR_NEW_REQ_LIBS}-")
set(${_RESULT} "${_CCSR_NEW_REQ_LIBS}" PARENT_SCOPE)
endfunction()
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