mirror of https://gitlab.com/QEF/q-e.git
66 lines
1.8 KiB
Plaintext
66 lines
1.8 KiB
Plaintext
# Copyright (C) 2001-2016 Quantum ESPRESSO Foundation
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AC_DEFUN([X_AC_QE_MPI], [
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have_mpi=0
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parallel=0
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# some architectures require to link mpi libraries explicitly
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F77=$mpif90 # use parallel compiler
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if test "$mpi_libs" = ""
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then
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# check directories in LD_LIBRARY_PATH too
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# (maybe they are already searched by default, but I'm not sure)
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ld_library_path=`echo $LD_LIBRARY_PATH | sed 's/:/ /g'`
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if test "$use_parallel" -ne 0
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then
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if test "$have_mpi" -eq 0
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# check for mpi
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then
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unset ac_cv_search_mpi_init # clear cached value
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LDFLAGS="$test_ldflags"
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LIBS="$mpi_libs"
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AC_SEARCH_LIBS(mpi_init, mpi,
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have_mpi=1 parallel=1 mpi_libs="$LIBS" try_dflags="$try_dflags -D__MPI")
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fi
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fi
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else
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if test "$use_parallel" -ne 0
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then
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have_mpi=1
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parallel=1
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try_dflags="$try_dflags -D__MPI"
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fi
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fi
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# Configuring output message
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if test "$mpi_libs" != "" ; then
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mpi_line="MPI_LIBS=$mpi_libs"
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else
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mpi_line="@delete@"
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fi
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# Parallel report
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if test "$use_parallel" -ne 0
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then
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if test "$parallel" -ne 0
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then
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parallel_report="Parallel environment detected successfully.\\
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Configured for compilation of parallel executables."
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else
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parallel_report="Parallel environment not detected \
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\(is this a parallel machine?\).\\
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Configured for compilation of serial executables."
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fi
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else
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parallel_report="Configured for compilation of serial executables."
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fi
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AC_SUBST(mpi_libs)
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AC_SUBST(mpi_line)
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AC_SUBST(parallel_report)
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]
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)
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