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# SPDX-FileCopyrightInfo: Copyright (C) DUNE Project contributors, see file LICENSE.md in module root
# SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
# Defines the functions to use BLAS/Lapack
#
# .. cmake_function:: add_dune_blas_lapack_flags
#
# .. cmake_param:: targets
# :positional:
# :single:
# :required:
#
# A list of targets to use BLAS/Lapack with.
#
include_guard(GLOBAL)
include(FeatureSummary)
set_package_properties("BLAS" PROPERTIES
DESCRIPTION "fast linear algebra routines")
set_package_properties("LAPACK" PROPERTIES
DESCRIPTION "fast linear algebra routines")
# register HAVE_BLAS and HAVE_LAPACK for config.h
set(HAVE_BLAS ${BLAS_FOUND})
set(HAVE_LAPACK ${LAPACK_FOUND})
# register Lapack library as dune package
if(HAVE_LAPACK)
dune_register_package_flags(LIBRARIES "${LAPACK_LIBRARIES}")
include(CMakePushCheckState)
cmake_push_check_state()
set(CMAKE_REQUIRED_LIBRARIES ${LAPACK_LIBRARIES})
check_function_exists("dsyev_" LAPACK_NEEDS_UNDERLINE)
cmake_pop_check_state()
elseif(HAVE_BLAS)
dune_register_package_flags(LIBRARIES "${BLAS_LIBRARIES}")
endif()
# add function to link against the BLAS/Lapack library
function(add_dune_blas_lapack_flags _targets)
foreach(_target ${_targets})
if(LAPACK_FOUND)
target_link_libraries(${_target} PUBLIC ${LAPACK_LIBRARIES})
elseif(BLAS_FOUND)
target_link_libraries(${_target} PUBLIC ${BLAS_LIBRARIES})
endif()
endforeach(_target)
endfunction(add_dune_blas_lapack_flags)
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