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# $NetBSD: mpi.buildlink3.mk,v 1.6 2021/05/11 21:30:57 thor Exp $
#
# This Makefile fragment is meant to be included by packages
# that use any MPI implementation instead of one particular one.
# The available MPI implementations are "mpich" and "openmpi",
# or just whatever you have installed in the system (mpi wrapper
# compiler names are standardized).
#
# You have to decide on one implementation and stick to it. Especially
# with the native option, installing an MPI implementation from pkgsrc
# will break things for programs that you built before.
#
# User-settable variables:
#
# MPI_TYPE
# This value represents the type of MPI we wish to use on the system.
# Changing this value is only safe when you ensure that all MPI-using
# packages are re-built, and if switching to native, the MPI package
# from pkgsrc needs to be deinstalled first.
#
# Possible: mpich, openmpi, native
# Default: mpich
.if !defined(MPI_BUILDLINK3_MK)
MPI_BUILDLINK3_MK= # define it
.include "../../mk/bsd.prefs.mk"
# Try to find if we have anything installed already
.if exists(${LOCALBASE}/bin/mpicc)
_INST_MPI_PACKAGE!= ${PKG_INFO} -Q PKGPATH -F ${LOCALBASE}/bin/mpicc
MPI_TYPE?= ${_INST_MPI_PACKAGE:T:S/-//}
.endif
MPI_TYPE?= mpich # default to MPICH due to backward compatibility
.if ${MPI_TYPE} == "native"
. if exists(${LOCALBASE}/bin/mpicc)
PKG_FAIL_REASON+= \
"MPI installed from pkgsrc conflicts with native. Deinstall ${_INST_MPI_PACKAGE}."
. endif
.elif ${MPI_TYPE} == "mpich"
_MPI_PACKAGE= parallel/mpi-ch
.elif ${MPI_TYPE} == "openmpi"
_MPI_PACKAGE= parallel/openmpi
.else # invalid or unimplemented type
PKG_FAIL_REASON+= \
"${MPI_TYPE} is not an acceptable MPI type for ${PKGNAME}."
.endif
.if defined(_MPI_PACKAGE)
. if !defined(_INST_MPI_PACKAGE) || ${_INST_MPI_PACKAGE} == ${_MPI_PACKAGE}
.include "../../${_MPI_PACKAGE}/buildlink3.mk"
. else
PKG_FAIL_REASON+= \
"Attempt to switch MPI type to ${MPI_TYPE} conflicting with installed ${_INST_MPI_PACKAGE}."
. endif
.endif
.endif # MPI_BUILDLINK3_MK
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