Add Makefile CLI option to disable mpi_f08 support#1407
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amstokely wants to merge 1 commit intoMPAS-Dev:developfrom
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Add Makefile CLI option to disable mpi_f08 support#1407amstokely wants to merge 1 commit intoMPAS-Dev:developfrom
amstokely wants to merge 1 commit intoMPAS-Dev:developfrom
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This change introduces a Makefile CLI flag that allows users to explicitly disable mpi_f08 integration even when the MPI provider supports it. By setting MPI_F08=false, MPAS will skip the mpi_f08_test dependency and build against the legacy mpi module instead, improving portability across MPI toolchains and libraries that lack mpi_f08 support.
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This PR adds a Makefile CLI option,
MPI_F08, that allows users to explicitly disable use of thempi_f08module duringMPASbuilds, even when the MPI provider supports it. Currently, MPAS automatically enablesmpi_f08whenever it is available, which prevents successful builds in environments and libraries that only support the legacympimodule. With this change, settingMPI_F08=falseskips thempi_f08_testdependency and emits a message indicating that the build will use the classic MPI module instead. The default behavior remains unchanged, preserving automaticmpi_f08usage unless the user opts out. This makes MPAS more portable across a wider range of MPI toolchains and avoids the need for local Makefile patches in downstream workflows.