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vtk_module_third_party_external(
PACKAGE MPI
COMPONENTS C
TARGETS MPI::MPI_C
INCLUDE_DIRS MPI_C_INCLUDE_DIRS MPI_C_INCLUDE_PATH
LIBRARIES MPI_C_LIBRARIES
DEFINITIONS MPI_C_COMPILE_DEFINITIONS
STANDARD_INCLUDE_DIRS)
vtk_module_install_headers(
FILES "${CMAKE_CURRENT_SOURCE_DIR}/vtk_mpi.h")
vtk_module_definitions(VTK::mpi
INTERFACE
MPICH_SKIP_MPICXX
OMPI_SKIP_MPICXX
MPI_NO_CPPBIND
_MPICC_H)
if (APPLE AND TARGET MPI::MPI_C)
# On macOS, MPI might have the `-Wl,-flat_namespace` option in it (mpich has
# been observed). This is incompatible with `@rpath` usage, so if we see it,
# just remove it from the link flags of the target.
get_property(mpi_link_flags
TARGET MPI::MPI_C
PROPERTY INTERFACE_LINK_LIBRARIES)
set(fixed_mpi_link_flags)
foreach (mpi_link_flag IN LISTS mpi_link_flags)
string(FIND "${mpi_link_flag}" "-Wl,-flat_namespace" idx)
if (idx EQUAL "-1")
list(APPEND fixed_mpi_link_flags
"${mpi_link_flag}")
endif ()
endforeach ()
set_property(TARGET MPI::MPI_C
PROPERTY
INTERFACE_LINK_LIBRARIES "${fixed_mpi_link_flags}")
endif ()
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