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Add support for imported targets #1

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Add support for imported targets #1

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39 changes: 39 additions & 0 deletions FindFortran.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,11 @@ These variables may be set to choose which compiler executable is looked up.
is not in the ``PATH``, this variable may be set to ensure it is
discovered.

.. variable:: Fortran_IMPORTED_TARGET_NAMESPACE

This variable may be set to add imported targets for each implicit
link libraries and define the :variable:`<Fortran_IMPORTED_TARGET_NAMESPACE>_Fortran_<Fortran_COMPILER_ID>_SUPPORT_LIBRARIES`.


The module may be used multiple times to find different compilers.

Expand Down Expand Up @@ -78,6 +83,20 @@ This module will set the following variables in your project:

This list of directories may be used to configure a launcher.

.. variable:: <Fortran_IMPORTED_TARGET_NAMESPACE>_Fortran_<Fortran_COMPILER_ID>_SUPPORT_LIBRARIES

This variable may be set to the list of :variable:`<Fortran_IMPORTED_TARGET_NAMESPACE>::Fortran_<Fortran_COMPILER_ID>_<IMPLICIT_LIBRARY_NAME>`.

IMPORTED Targets
^^^^^^^^^^^^^^^^

.. variable:: <Fortran_IMPORTED_TARGET_NAMESPACE>::Fortran_<Fortran_COMPILER_ID>_<IMPLICIT_LIBRARY_NAME>

If :variable:`Fortran_IMPORTED_TARGET_NAMESPACE` is set, this module defines :prop_tgt:`IMPORTED` targets
for each implicit link libraries. Each target is named following the pattern
``<Fortran_IMPORTED_TARGET_NAMESPACE>::Fortran_<Fortran_COMPILER_ID>_<IMPLICIT_LIBRARY_NAME>``
OpenCL has been found.

#]=======================================================================]

function(_fortran_assert)
Expand Down Expand Up @@ -396,6 +415,26 @@ if(Fortran_${_id}_RUNTIME_LIBRARIES)
list(APPEND _additional_required_vars Fortran_${_id}_RUNTIME_DIRECTORIES)
endif()

# imported targets
if(Fortran_IMPORTED_TARGET_NAMESPACE)
set(_imported_targets)
if(Fortran_${_id}_IMPLICIT_LINK_LIBRARIES)
set(_link_libs ${Fortran_${_id}_IMPLICIT_LINK_LIBRARIES})
list(REMOVE_ITEM _link_libs c crypt dl gcc_s m nsl rt util pthread stdc++)
foreach(_lib IN LISTS _link_libs)
find_library(Fortran_${_id}_${_lib}_IMPLICIT_LINK_LIBRARY ${_lib} PATHS ${Fortran_${_id}_IMPLICIT_LINK_DIRECTORIES})

add_library(${Fortran_IMPORTED_TARGET_NAMESPACE}::Fortran_${_id}_${_lib} UNKNOWN IMPORTED)
set_target_properties(${Fortran_IMPORTED_TARGET_NAMESPACE}::Fortran_${_id}_${_lib} PROPERTIES
IMPORTED_LOCATION "${Fortran_${_id}_${_lib}_IMPLICIT_LINK_LIBRARY}"
IMPORTED_LINK_INTERFACE_LANGUAGES "C"
)
list(APPEND _imported_targets ${Fortran_IMPORTED_TARGET_NAMESPACE}::Fortran_${_id}_${_lib})
endforeach()
endif()
set(${Fortran_IMPORTED_TARGET_NAMESPACE}_Fortran_${_id}_SUPPORT_LIBRARIES ${_imported_targets})
endif()

# outputs
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Fortran
Expand Down