File: intel-flags

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#							-*- 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 files COPYING and Copyright.html.  COPYING can be found at the root
# of the source code distribution tree; Copyright.html can be found at the
# root level of an installed copy of the electronic HDF5 document set and
# is linked from the top-level documents page.  It can also be found at
# http://hdfgroup.org/HDF5/doc/Copyright.html.  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
# Intel icc compiler or a derivative.  It is careful not to do anything
# if the compiler is not Intel; otherwise `cc_flags_set' is set to `yes'
#

# Get the compiler version in a way that works for icc
# icc unless a compiler version is already known
#
#   cc_vendor:    The compiler name: icc
#   cc_version:   Version number: 8.0
#
if test X = "X$cc_flags_set"; then
    cc_version="`$CC $CFLAGS $H5_CFLAGS -V 2>&1 |grep 'Version'`"
    if test X != "X$cc_version"; then
        cc_vendor=icc
        cc_version=`echo $cc_version |sed 's/.*Version \([-a-z0-9\.\-]*\).*/\1/'`
        echo "compiler '$CC' is Intel $cc_vendor-$cc_version"

        # Some version numbers
        # Intel version numbers are of the form: "major.minor"
        cc_vers_major=`echo $cc_version | cut -f1 -d.`
        cc_vers_minor=`echo $cc_version | cut -f2 -d.`
        #cc_vers_patch=`echo $cc_version | cut -f2 -d.`
        test -n "$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 '*' 1000000 + $cc_vers_minor '*' 1000 + $cc_vers_patch`
    fi
fi

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

    arch=
    # Architecture-specific flags
    # 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

    # General
    # Default to C99 standard.
    H5_CFLAGS="${H5_CFLAGS:--std=c99 $arch}"

    # Production is set to default; see settings for specific version further down
    PROD_CFLAGS="-O" 
    PROD_CPPFLAGS=

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

    # Profile
    # Use this for profiling with gprof
    PROFILE_CFLAGS="-g -p"
    PROFILE_CPPFLAGS=

    # Flags are set
    cc_flags_set=yes

fi

# Version specific ICC flags
#
# Please follow the pattern below by adding new versions at the top, copying
# the information from the previous version and adding modifications to that.
# The default at the bottom will apply if no earlier version matches.
case "$cc_vendor-$cc_version" in
    icc-10*)
        PROD_CFLAGS="-O1 -Wl,-s"
        ;;
    icc-8.0*)
	# v8.0 -O3 infinite loops when compiling test/tselect.c. Use -O2.
	PROD_CFLAGS="-O2 -Wl,-s"
	;;
    icc-*)
        # -s became obsolete; we also fixed bugs that allow us to enable higher level
        # of optimization starting with 1.8.7
        PROD_CFLAGS="-O3"
        ;;
esac

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