#!/bin/sh
# -*- sh-indentation: 3 -*-
#
###############################################################################
#
# This script returns the compile options needed to compile and link 
# applications using the RAIDA library.
# 
# This script 
# - requires RAIDA_HOME to be set properly
# - needs root-config for ROOT libraries
# 
# F.Gaede, T.Kraemer, A.Vogel, DESY
#
###############################################################################

usage()
{
    echo "Usage: $(basename "$0") [--include] [--lib] [--[no]root]" 1>&2
}

# did the user run the script without arguments?
if [ $# -eq 0 ]
then
    usage
    exit 0
fi

# default behaviour: include ROOT libraries in the output
print_root=1

# scan the command line arguments
for i in "$@"
do
    case "$i" in
        --include | -include )
            print_incs=1 ;;
        --lib | -lib | --libs | -libs )
            print_libs=1 ;;
        --root | -root )
            print_root=1 ;;
        --noroot | -noroot )
            unset print_root ;;
        --help | -help | -h )
            usage ; exit 0 ;;
        -* )
            echo "$(basename "$0"): unknown option: $i" 1>&2
            usage ; exit 1 ;;
        * )
            echo "$(basename "$0"): illegal argument: $i" 1>&2
            usage ; exit 1 ;;
    esac
done

# print ROOT libraries only if the user wants libraries
if [ -z "${print_libs}" ]
then
    unset print_root
fi

# test whether the command "root-config" is available
if [ "${print_root}" ]
then
    # does the shell know this command?
    #type root-config >& /dev/null
    type root-config 1> /dev/null 2> /dev/null
    # test the exit status of "type"
    if [ $? -ne 0 ]
    then
        echo "$(basename "$0"): root-config: command not found" 1>&2 ; exit 1
    fi
fi

# test whether RAIDA_HOME is unknown (just a warning, not a fatal error)
if [ -z "${RAIDA_HOME}" ]
then
    echo "$(basename "$0"): warning: RAIDA_HOME is not set" 1>&2
fi

# compose the output depending on the user choice
[ "${print_incs}" ] && out="${out}${out:+ }${RAIDA_HOME:+-I${RAIDA_HOME}/include}"
[ "${print_libs}" ] && out="${out}${out:+ }${RAIDA_HOME:+-L${RAIDA_HOME}/lib }-lRAIDA"
[ "${print_root}" ] && out="${out}${out:+ }$(root-config --libs)"

echo "${out}"
exit 0