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# SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
# SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
# The DUNE way to compile MPI applications is to use the CXX
# compiler with MPI flags usually used for C. CXX bindings
# are deactivated to prevent ABI problems.
#
# .. cmake_function:: add_dune_mpi_flags
#
# .. cmake_param:: targets
# :single:
# :required:
# :positional:
#
# The target list to add the MPI flags to.
#
include_guard(GLOBAL)
# text for feature summary
set_package_properties("MPI" PROPERTIES
DESCRIPTION "Message Passing Interface library"
PURPOSE "Parallel programming on multiple processors")
if(MPI_C_FOUND)
set(HAVE_MPI ${MPI_C_FOUND})
dune_register_package_flags(
COMPILE_DEFINITIONS
"HAVE_MPI=1;MPICH_SKIP_MPICXX=1;OMPI_SKIP_MPICXX=1;MPI_NO_CPPBIND=1;MPIPP_H;_MPICC_H"
LIBRARIES
MPI::MPI_C)
endif()
# adds MPI flags to the targets
function(add_dune_mpi_flags)
cmake_parse_arguments(ADD_MPI "SOURCE_ONLY;OBJECT" "" "" ${ARGN}) # ignored
set(targets ${ADD_MPI_UNPARSED_ARGUMENTS})
if(MPI_C_FOUND)
foreach(target ${targets})
target_link_libraries(${target} PUBLIC MPI::MPI_C)
target_compile_definitions(${target} PUBLIC
HAVE_MPI=1 MPICH_SKIP_MPICXX=1 OMPI_SKIP_MPICXX=1 MPI_NO_CPPBIND=1 MPIPP_H _MPICC_H)
endforeach(target)
endif()
endfunction(add_dune_mpi_flags)
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