#							-*- 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 is part of the HDF5 build script.  It is processed shortly
# after configure starts and defines, among other things, flags for
# the various compile modes.
#
# See BlankForm in this directory for details.

# The default compiler is `clang'.
# No support for OS older than darwin 10.X.
if test "X-" = "X-$CC"; then
    case "$host_os" in
        darwin10.*)	# Snow Leopard. Use gcc/g++ because clang++ is not available.
            CC=gcc
            CC_BASENAME=gcc
            ;;
        *)
            if test "X-$enable_parallel" = "X-yes"; then
                # default to use mpicc which is the defacto MPI compiler name
                CC=mpicc
                CC_BASENAME=mpicc
            else
                CC=clang
                CC_BASENAME=clang
            fi

            # Production
            PROD_CFLAGS="-O3" 
            PROD_CPPFLAGS=

            # Debug
            DEBUG_CFLAGS="-g -O0"
            DEBUG_CPPFLAGS=

            # Profile
            # Use this for profiling with gprof
            # Just "-g" for now. More later.
            PROFILE_CFLAGS="-g"
            PROFILE_CPPFLAGS=
            ;;
    esac
fi

# Figure out C compiler flags
. $srcdir/config/gnu-flags
. $srcdir/config/clang-flags
. $srcdir/config/oneapi-flags
. $srcdir/config/intel-flags

if test "X-" = "X-$FC"; then
    case $CC_BASENAME in
        gcc*)
            FC=gfortran
            FC_BASENAME=gfortran
            ;;
        icx*)
            FC=ifx
            FC_BASENAME=ifx
            ;;
        icc*)
            FC=ifort
            FC_BASENAME=ifort
            ;;
        mpicc*)
            FC=mpif90
            FC_BASENAME=mpif90
            ;;
        clang)
            # clang has no fortran compiler. Use gfortran.
            FC=gfortran
            FC_BASENAME=gfortran
            ;;
    esac
fi

# Figure out FORTRAN compiler flags
. $srcdir/config/gnu-fflags
. $srcdir/config/oneapi-fflags
. $srcdir/config/intel-fflags


# The default C++ compiler is `clang++'.
if test "X-" = "X-$CXX"; then
    case $CC_BASENAME in
        gcc)
            CXX=g++
            CXX_BASENAME=g++
            ;;
        icx)
            CXX=icpx
            CXX_BASENAME=icpx
            ;;
        icc)
            CXX=icpc
            CXX_BASENAME=icpc
            ;;
        mpicc*)
            FC=mpif90
            FC_BASENAME=mpif90
            ;;
        clang)
            CXX=clang++
            CXX_BASENAME=clang++
            ;;
    esac
fi

# Figure out C++ compiler flags
. $srcdir/config/oneapi-cxxflags
. $srcdir/config/intel-cxxflags # Do this ahead of GNU to avoid icpc being detected as g++
. $srcdir/config/gnu-cxxflags
. $srcdir/config/clang-cxxflags

# compiler version strings
case $CC in
    clang)
        cc_version_info=`$CC $CFLAGS $H5_CFLAGS --version 2>&1 |\
            grep 'Apple' | sed 's/(.*//'`
        ;;

    *gcc*)
        cc_version_info=`$CC $CFLAGS $H5_CFLAGS --version 2>&1 | grep -v 'PathScale' |\
            grep 'GCC' | sed 's/.*\((GCC) [-a-z0-9\. ]*.*\)/\1/'`
        ;;

    *icx*)
        cc_version_info=`$CC $CCFLAGS $H5_CCFLAGS -V 2>&1 | grep 'Version' |\
            sed 's/\(Intel.* Compiler\).*\( Version [a-z0-9\.]*\).*\( Build [0-9]*\)/\1\2\3/'`
        ;;

    *icc*)
        cc_version_info=`$CC $CCFLAGS $H5_CCFLAGS -V 2>&1 | grep 'Version' |\
            sed 's/\(Intel.* Compiler\).*\( Version [a-z0-9\.]*\).*\( Build [0-9]*\)/\1\2\3/'`
        ;;

    *)
        echo "No match to get cc_version_info for $CC"
        ;;
esac

# Figure out Fortran compiler flags and version strings
case $FC in
    *gfortran*)
        fc_version_info=`$FC $FCFLAGS $H5_FCFLAGS --version 2>&1 |\
            grep 'GCC' | sed 's/\(.*(GCC) [-a-z0-9\. ]*\).*/\1/'`
        ;;

    *ifx*)
        fc_version_info=`$FC $FCFLAGS $H5_FCFLAGS -V 2>&1 | grep 'Version' |\
            sed 's/\(Intel.* Compiler\).*\( Version [a-z0-9\.]*\).*\( Build [0-9]*\)/\1\2\3/'`
        ;;

    *ifc*|*ifort*)
        fc_version_info=`$FC $FCFLAGS $H5_FCFLAGS -V 2>&1 | grep 'Version' |\
            sed 's/\(Intel.* Compiler\).*\( Version [a-z0-9\.]*\).*\( Build [0-9]*\)/\1\2\3/'`
        ;;

     *)
        echo "No match to get fc_version_info and flags for $FC"
        ;;

esac

# get c++ version info
case $CXX in
    clang++)
        cxx_version_info=`$CXX $CXXFLAGS $H5_CXXFLAGS --version 2>&1 |\
            grep 'Apple' | sed 's/(.*//'`
        ;;

    *g++*)
        cxx_version_info=`$CXX $CXXFLAGS $H5_CXXFLAGS --version 2>&1 |\
            grep 'GCC' | sed 's/.*\((GCC) [-a-z0-9\. ]*.*\)/\1/'`
        ;;

   *icpx*)
        cxx_version_info=`$CXX $CXXFLAGS $H5_CXXFLAGS -V 2>&1 | grep 'Version' |\
            sed 's/\(Intel.* Compiler\).*\( Version [a-z0-9\.]*\).*\( Build [0-9]*\)/\1\2\3/'`
        ;;

   *icpc*)
        cxx_version_info=`$CXX $CXXFLAGS $H5_CXXFLAGS -V 2>&1 | grep 'Version' |\
            sed 's/\(Intel.* Compiler\).*\( Version [a-z0-9\.]*\).*\( Build [0-9]*\)/\1\2\3/'`
        ;;

    *)
        echo "No match to get cxx_version_info for $CXX"
        ;;
esac