#!/bin/sh

# runConfigureICU: This script will run the "configure" script for the appropriate platform
# Only supported platforms are recognized

me=`basename $0`
OPTS=

usage()
{
    ec=0$1
    if test $ec -eq 0
    then
        uletter=U
    else
 	uletter=u
    fi
    
    echo "${uletter}sage: $me [ -h, --help ]  [ --enable-debug | --disable-release ] platform [ configurearg ... ]"
    if test $ec -eq 0
    then
	cat <<EOE

Options: -h, --help         Print this message and exit
         --enable-debug	    Enable support for debugging
	 --disable-release  Disable presetting optimization flags

The following names can be supplied as the argument for platform:

    AIX4.3xlC               Use IBM's xlC on AIX 4.3
    AIX4.3xlC_nothreads     Use IBM's xlC on AIX 4.3 with no multithreading
    AIX4.3VA                Use IBM's Visual Age xlC_r compiler on AIX 4.3
    AIX4.3VA_nothreads      Use IBM's Visual Age xlC_r compiler on AIX 4.3 with no multithreading
    ALPHA/LINUXGCC          Use GCC on Alpha/Linux systems
    ALPHA/LINUXCCC          Use Compaq C compiler on Alpha/Linux systems
    FreeBSD                 Use the GNU C++ compiler on Free BSD
    HP/UX11CC               Use HP's C++ compiler on HP-UX 11
    HP/UX11ACC              Use the Advanced C++ compiler on HP-UX 11
    LinuxRedHat             Use the GNU C++ compiler on Linux
    CygWin                  Use the GNU C++ compiler on CygWin
    SOLARISCC               Use Sun's CC compiler on Solaris 
    SOLARISGCC              Use the GNU C++ compiler on Solaris
    SOLARISX86              Use Sun's CC compiler on Solaris x86
    TRU64V5.1/CXX           Use Copmaq's cxx compiler on Tru64 (OSF) 
    zOS/cxx                 Use IBM's cxx compiler on z/OS (os/390)
EOE
    fi

    exit $ec
}

# Parse arguments

platform=
debug=0
release=1

while test $# -ne 0
do
    case "$1" in
    -h|--help)
        usage 0
        ;;
    --enable-debug)
        debug=1
        release=0
        ;;
    --disable-release)
        debug=0
        release=0
        ;;
    *)
        platform="$1"
        shift
        break
        ;;
    esac
    shift
done

if test x$platform = x
then
   usage 1
fi

# Go.

rm -f config.cache
rm -f config.log
rm -f config.status

DEBUG_CFLAGS='-g'
DEBUG_CXXFLAGS='-g'

if test x$configure = x
then
    if test -f ./configure
    then
        configuredir=.
    else
        configuredir=`echo $0 | sed 's,[^/]*$,,'`
        if test x$configuredir = x$0
        then
            configuredir=.
        fi
    fi

    if test x$configuredir = x
    then
        configuredir=.
    fi

    configure=$configuredir/configure
fi

case $platform in
    AIX4.3xlC)
        THE_OS=AIX
        THE_COMP="xlC_r"
        CC=/usr/ibmcxx/bin/xlc_r; export CC
        CXX=/usr/ibmcxx/bin/xlC_r; export CXX
        RELEASE_CFLAGS="-O -qmaxmem=-1"
        RELEASE_CXXFLAGS="-O -qmaxmem=-1"
        ;;
    AIX4.3xlC_nothreads)
        THE_OS=AIX
        THE_COMP="xlC"
        CC=/usr/ibmcxx/bin/xlc; export CC
        CXX=/usr/ibmcxx/bin/xlC; export CXX
        AIX_SHLIB=/usr/ibmcxx/bin/makeC++SharedLib; export AIX_SHLIB
        RELEASE_CFLAGS="-O -qmaxmem=-1"
        RELEASE_CXXFLAGS="-O -qmaxmem=-1"
        OPTS="$OPTS --enable-threads=no"
        ;;
    AIX4.3VA)
        THE_OS=AIX
        THE_COMP="xlC_r"
        CC=/usr/vacpp/bin/xlc_r; export CC
        CXX=/usr/vacpp/bin/xlC_r; export CXX
        RELEASE_CFLAGS="-O2 -qmaxmem=-1"
        RELEASE_CXXFLAGS="-O2 -qmaxmem=-1"
        #LDFLAGS=-L/usr/lpp/xlC/lib; export LDFLAGS
        ;;
    AIX4.3VA_nothreads)
        THE_OS=AIX
        THE_COMP="xlC"
        CC=/usr/vacpp/bin/xlc; export CC
        CXX=/usr/vacpp/bin/xlC; export CXX
        OPTS="$OPTS --enable-threads=no"
        RELEASE_CFLAGS="-O2 -qmaxmem=-1"
        RELEASE_CXXFLAGS="-O2 -qmaxmem=-1"
        #LDFLAGS=-L/usr/lpp/xlC/lib; export LDFLAGS
        ;;
    SOLARISX86)
        THE_OS="SOLARIS X86"
        THE_COMP="Sun's CC"
        CC=`which cc`; export CC
        CXX=`which CC`; export CXX
        CXX_FLAGS="-w";export CXX_FLAGS
        C_FLAGS="-w";export C_FLAGS
        LDFLAGS="-L -lCrun";export LDFLAGS
        RELEASE_CFLAGS=-xO3
        RELEASE_CXXFLAGS=-O3
        ;;
    SOLARISCC)
        THE_OS=SOLARIS
        THE_COMP="Sun's CC"
        CC=`which cc`; export CC
        CXX=`which CC`; export CXX
        RELEASE_CFLAGS=-xO3
        RELEASE_CXXFLAGS=-O3
        ;;
    SOLARISGCC)
        THE_OS=SOLARIS
        THE_COMP="the GNU C++"
        CXXFLAGS=-I/usr/local/include/g++; export CXXFLAGS
        LDFLAGS=-R/usr/local/lib; export LDFLAGS
        ;;
    HP/UX11CC)
        THE_OS="HP-UX 11"
        THE_COMP="HP's CC"
        CC=cc; export CC
        CXX=CC; export CXX
        RELEASE_CFLAGS='+O2 +Ofltacc'
        RELEASE_CXXFLAGS='+O2 +Ofltacc'
        ;;
    HP/UX11ACC)
        THE_OS="HP-UX 11"
        THE_COMP="aCC"
        CC=cc; export CC
        CXX=aCC; export CXX
        RELEASE_CFLAGS='+O2 +Ofltacc'
        RELEASE_CXXFLAGS='+O2 +Ofltacc'
        ;;
    ALPHA/LINUXCCC)
        THE_OS="Linux"
        THE_COMP="Compaq's CC"
        CC=ccc; export CC
        CXX=cxx; export CXX
        RELEASE_CFLAGS='-O4'
        RELEASE_CXXFLAGS='-O4'       
        ;;
    ALPHA/LINUXGCC)
        THE_OS="Linux"
        THE_COMP="the GNU C++"
        CC=gcc; export CC
        CXX=g++; export CXX
        ;;
    TRU64V5.1/CXX)
        THE_OS="OSF1"
        THE_COMP="Compaq cxx"
        CC=cxx; export CC
        CXX=cxx; export CXX
        ;;
    LinuxRedHat*)
        THE_OS="Linux"
        THE_COMP="the GNU C++"
        CC=gcc; export CC
        CXX=g++; export CXX 
        ;;
    CygWin)
        ;;
    *BSD)
        THE_OS="BSD"
        THE_COMP="the GNU C++"
        CC=gcc; export CC
        CXX=g++; export CXX 
        ;;
    zOS/cxx)
        THE_OS="z/OS"
        THE_COMP="r10 cxx"
        CC=cc; export CC
        CXX=cxx; export CXX
        export IEEE390=1
        export RELEASE_CFLAGS='-2'
        export RELEASE_CXXFLAGS='-2'
        ;;
    *)
        >&2 echo "$me: unrecognized platform \"$platform\" (use --help for help)"
        exit 1;;
esac


# Tweak flags

if test $release -eq 1
then
    if test "$RELEASE_CFLAGS" = ""
    then
        case $CC in
            gcc|*/gcc|*-gcc-*|*/*-gcc-*)
                RELEASE_CFLAGS=-O3
                ;;
        esac
    fi
    if test "$RELEASE_CFLAGS" != ""
    then
        CFLAGS="$CFLAGS $RELEASE_CFLAGS"
    fi
    export CFLAGS
    if test "$RELEASE_CXXFLAGS" = ""
    then
        case $CXX in
            g++|*/g++|*-g++-*|*/*-g++-*)
                RELEASE_CXXFLAGS=-O
                ;;
        esac
    fi
    if test "$RELEASE_CXXFLAGS" != ""
    then
        CXXFLAGS="$CXXFLAGS $RELEASE_CXXFLAGS"
    fi
    export CXXFLAGS
fi

if test $debug -eq 1
then
    if test "$DEBUG_CFLAGS" != ""
    then
        CFLAGS="$CFLAGS $DEBUG_CFLAGS"
    fi
    export CFLAGS
    if test "$DEBUG_CXXFLAGS" != ""
    then
        CXXFLAGS="$CXXFLAGS $DEBUG_CXXFLAGS"
    fi
    export CXXFLAGS
fi

# Run configure

echo "Running ./configure $OPTS $@ for $THE_OS using $THE_COMP compiler"
echo
$configure $OPTS $@
echo
echo If the result of the above commands looks okay to you, go to the directory
echo source in the ICU distribution to build ICU. Please remember that ICU needs
echo GNU make to build properly...