#                            -*- shell-script -*-
#
# Copyright by The HDF Group.
# All rights reserved.
#
# This file is part of HDF5.  The full HDF5 copyright notice, including
# terms governing use, modification, and redistribution, is contained in
# the COPYING file, which can be found at the root of the source code
# distribution tree, or in https://www.hdfgroup.org/licenses.
# If you do not have access to either file, you may request a copy from
# help@hdfgroup.org.


# This file should be sourced into configure if the compiler is the
# NVIDIA nvfortran compiler or a derivative.  It is careful not to do anything
# if the compiler is not NVIDIA; otherwise `f9x_flags_set' is set to `yes'
#

# Get the compiler version in a way that works for NVIDIA nvfortran
# unless a compiler version is already known
#
#   f9x_vendor:    The compiler name: nvfortran
#   f9x_version:   Version number:
#
if test X = "X$f9x_flags_set"; then
    f9x_version="`$FC $FCFLAGS -V 2>&1 |grep '^nvfortran '`"
    if test X != "X$f9x_version"; then
        is_mpi="`$FC $FCFLAGS -help 2>&1 |grep 'link MPI'`"
        f9x_vendor=`echo $f9x_version |sed 's/\([a-z0-9]*\).*/\1/'`
        f9x_version=`echo $f9x_version |sed 's/nvfortran \([-a-z0-9\.\-]*\).*/\1/'`
        echo "compiler '$FC' is NVIDIA $f9x_vendor-$f9x_version"

        # Some version numbers
        # NVIDIA version numbers are of the form: "major.minor-patch"
        f9x_vers_major=`echo $f9x_version | cut -f1 -d.`
        f9x_vers_minor=`echo $f9x_version | cut -f2 -d. | cut -f1 -d-`
        f9x_vers_patch=`echo $f9x_version | cut -f2 -d. | cut -f2 -d-`
        test -n "$f9x_vers_major" || f9x_vers_major=0
        test -n "$f9x_vers_minor" || f9x_vers_minor=0
        test -n "$f9x_vers_patch" || f9x_vers_patch=0
        f9x_vers_all=`expr $f9x_vers_major '*' 1000000 + $f9x_vers_minor '*' 1000 + $f9x_vers_patch`
    fi
fi

# Common NVIDIA flags for various situations
if test "X-nvfortran" = "X-$f9x_vendor"; then

    ###############################
    # Architecture-specific flags #
    ###############################

    arch=
    # Nothing currently. (Uncomment code below and modify to add any)
    #case "$host_os-$host_cpu" in
    #    *-i686)
    #        arch="-march=i686"
    #        ;;
    #esac

    # Host-specific flags
    # Nothing currently. (Uncomment code below and modify to add any)
    #case "`hostname`" in
    #    sleipnir.ncsa.uiuc.edu)
    #        arch="$arch -pipe"
    #        ;;
    #esac

    ##############
    # Production #
    ##############

    # Check for MPI wrapper being used and tweak down compiler options
    # Comment out the Tweaking since it caused problems to mpich1.2.6.
    # Need to investigate the reasons to tweak.
    #if test "X-" == "X-$is_mpi"; then
    #    PROD_FCFLAGS="-fast -s -Mnoframe"
    #else
    #    PROD_FCFLAGS="-O2 -s"
    #fi
    PROD_FCFLAGS="-fast -Mnoframe -fPIC"

    #########
    # Debug #
    #########

    DEBUG_FCFLAGS="-Mbounds -Mchkptr -Mdclchk -fPIC"

    ###########
    # Symbols #
    ###########

    NO_SYMBOLS_FCFLAGS="-s"
    SYMBOLS_FCFLAGS="-g"

    #############
    # Profiling #
    #############

    PROFILE_FCFLAGS="-Mprof=func,line"
    # Use this for profiling with gprof
    #PROFILE_FCFLAGS="-pg"

    ################
    # Optimization #
    ################

    HIGH_OPT_FCFLAGS=
    DEBUG_OPT_FCFLAGS=
    NO_OPT_FCFLAGS=

    ############
    # Warnings #
    ############

    ###########
    # General #
    ###########

    FC_BASENAME=nvfortran
    Fortran_COMPILER_ID=NVIDIA
    F9XSUFFIXFLAG=""
    FSEARCH_DIRS=""
    # Uncomment the following to add something specific for FCFLAGS.
    #FCFLAGS="$FCFLAGS"



    #################
    # Flags are set #
    #################
    f9x_flags_set=yes
fi

# Clear f9x info if no flags set
if test "X-$f9x_flags_set" = "X-"; then
  f9x_vendor=
  f9x_version=
fi