#							-*- shell-script -*-
#
# Copyright by The HDF Group.
# Copyright by the Board of Trustees of the University of Illinois.
# 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://support.hdfgroup.org/ftp/HDF5/releases.
# 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
# IBM XL compiler or a derivative.  It is careful not to do anything
# if the compiler is not IBM; otherwise `cc_flags_set' is set to `yes'
#

# Get the compiler version in a way that works for XL compiler
# unless a compiler version is already defined.
#
#   cc_vendor:       The compiler product name: XL
#   cc_version:      Version number: 10.1
#   cc_version_info: More descriptive version information
#
if test X = "X$cc_flags_set"; then
    # Verify this is an IBM XL compiler
    cc_version="`$CC $CFLAGS -qversion 2>&1 | grep 'IBM XL C/C++'`"
    if test X != "X$cc_version"; then
        cc_vendor="XL"
	cc_version="`$CC $CFLAGS -qversion 2>&1 | sed -n 's/Version: \([0-9\.]*\).*/\1/p'`"
	cc_version_info="IBM XL C/C++ $cc_version"
        echo "compiler '$CC' is IBM $cc_vendor-$cc_version"

        # Some more version numbers.
        # XL version numbers are of the form: "major.minor.X.Y"
	# (Need to find out the official meaning of the 4 components.)
        cc_vers_major=`echo $cc_version | cut -f1 -d.`
        cc_vers_minor=`echo $cc_version | cut -f2 -d.`
        cc_vers_patch=`echo $cc_version | cut -f3 -d.`
        test -n "$cc_vers_major" || cc_vers_major=0
        test -n "$cc_vers_minor" || cc_vers_minor=0
        test -n "$cc_vers_patch" || cc_vers_patch=0
        cc_vers_all=`expr \( \( $cc_vers_major \* 100 + $cc_vers_minor \) \* 100 \) + $cc_vers_patch`
    fi
fi

# Common XL flags for various situations
if test "XL" = "$cc_vendor"; then
    # Insert section about version specific problems from gnu-flags here, if
    # necessary.

    # Turn off shared lib option.  It causes some test suite to fail.
    enable_shared="${enable_shared:-no}"
    
    # Make sure this is applied to other API compile options such as C++.
    AM_CFLAGS="$AM_CFLAGS"

    # -qflag=w:w makes the lowest level of reported compile issues to be "warning"
    # instead of "information". This suppresses a very large number of messages
    # concerning the portability of __inline__.
    H5_CFLAGS="-qlanglvl=stdc99 -qflag=w:w $H5_CFLAGS"

    # Produciton
    PROD_CFLAGS=

    # Debug
    # NDEBUG is handled explicitly in configure
    DEBUG_CFLAGS="-qfullpath"

    # Symbols
    SYMBOLS_CFLAGS="-g"
    NO_SYMBOLS_CFLAGS=

    # Profiling
    PROFILE_CFLAGS="-pg"

    # Optimization
    # -O causes test/dtypes to fail badly. Turn it off for now.
    HIGH_OPT_CFLAGS=
    DEBUG_OPT_CFLAGS=
    NO_OPT_CFLAGS=

    # Flags are set
    cc_flags_set=yes
fi

# Clear cc info if no flags set
if test "X-$cc_flags_set" = "X-"; then
  cc_vendor=
  cc_version=
  cc_version_info=
fi


# get fortran version info
if test X != X$FC; then
    # Verify this is an IBM XL compiler
    fc_version="`$FC $FCFLAGS -qversion 2>&1 | grep 'IBM XL Fortran'`"
    if test X != "X$fc_version"; then
        fc_vendor="XL"
	fc_version="`$FC $FCFLAGS -qversion 2>&1 | sed -n 's/Version: \([0-9\.]*\).*/\1/p'`"
	fc_version_info="IBM XL Fortran $fc_version"
        echo "compiler '$FC' is IBM $fc_vendor-$fc_version"

    fi
fi


# get c++ version info
if test X != X$CXX; then
    # Verify this is an IBM XL compiler
    cxx_version="`$CXX $CXXFLAGS -qversion 2>&1 | grep 'IBM XL C/C++'`"
    if test X != "X$cxx_version"; then
        cxx_vendor="XL"
	cxx_version="`$CXX $CXXFLAGS -qversion 2>&1 | sed -n 's/Version: \([0-9\.]*\).*/\1/p'`"
	cxx_version_info="IBM XL C/C++ $cxx_version"
        echo "compiler '$CXX' is IBM $cxx_vendor-$cxx_version"

    fi
fi

