[AMBER] Broken AmberTools19 cpptraj compilation for GNU, Intel and PGI on a Cray with -crayxt5 flag

From: Victor Holanda Rusu <victorusu.gmail.com>
Date: Fri, 15 Nov 2019 17:42:20 +0100

Dear List,

AFAIK, the only way to make Amber compile on a Cray using the cray wrappers
is either by using the cray compiler or by adding the -crayxt5 flag.

But, when one attempts to compile AmberTools19 with either the gnu, intel
or pgi compilers on a cray with the -crayxt5 flag, he/she gets the
following me error message similar to

Error: gnu compilers specified but need cray based on CXX = CC

The issue is inside the cpptraj configure script
(AmberTools/src/cpptraj/configure), which does not accept the use of Cray
compiler wrappers for GNU, Intel and PGI compilers.

 917 SPECIFIED_COMPILER=$COMPILERS

 918 echo "Determining compilers from CXX ($CXX)"

 919 case "$CXX" in

 920 # NOTE - Have to look for clang++ first since it overlaps with
g++
 921 *clang++* ) COMPILERS='clang' ;;

 922 *g++* ) COMPILERS='gnu' ;;

 923 *icpc* ) COMPILERS='intel' ;;

 924 *pgc++* ) COMPILERS='pgi' ;;

 925 *CC* ) COMPILERS='cray' ;;

 926 * ) echo "Warning: Could not detect compiler type ($CXX);
assuming GNU" > /dev/stderr;;
 927 esac

 928 # If compiler was also specified make sure it matches as a
sanity check
 929 if [ ! -z "$SPECIFIED_COMPILER" -a "$SPECIFIED_COMPILER" !=
"$COMPILERS" ] ; then
 930 echo "Error: $SPECIFIED_COMPILER compilers specified but need
$COMPILERS based on CXX = $CXX" > /dev/stderr

Is it really necessary to perform this check?
Or can you change it to a more generic way, something similar to
 925 *CC* )
    if [ "X$PE_ENV" == "XCRAY" ]; then
    COMPILERS='cray' ;;
    elif [ "X$PE_ENV" == "XGNU" ]; then
    COMPILERS='gnu' ;;
    elif [ "X$PE_ENV" == "XCLANG" ]; then
    COMPILERS='clang' ;;
    elif [ "X$PE_ENV" == "XINTEL" ]; then
    COMPILERS='intel' ;;
    elif [ "X$PE_ENV" == "XPGI" ]; then
    COMPILERS='pgi' ;;
    else
    COMPILERS='UNKNOWN' ;;
    fi
    ;;

Thanks.


Best regards,

Victor Holanda
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Received on Fri Nov 15 2019 - 09:00:02 PST
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