#! /bin/sh

prefix=/usr/local
exec_prefix=${prefix}
exec_prefix_set=no
includedir=${prefix}/include
libdir=${exec_prefix}/lib

the_flags="-I$includedir "
the_libs="-L$libdir -lixion -lm"

usage()
{
    cat <<EOF
Usage: $0 [OPTION]... 

Known values for OPTION are:

  --prefix=DIR		change prefix [default $prefix]
  --exec-prefix=DIR	change executable prefix [default $exec_prefix]
  --libs		print library linking information
  --cflags		print pre-processor and compiler flags
  --help		display this help and exit
  --version		output version information

EOF

    exit $1
}

if test $# -eq 0; then
    usage 1
fi

cflags=false
libs=false

while test $# -gt 0; do
    case "$1" in
    -*=*) optarg=`echo "$1" | sed 's/[-_a-zA-Z0-9]*=//'` ;;
    *) optarg= ;;
    esac

    case "$1" in
    --prefix=*)
	prefix=$optarg
	if test $exec_prefix_set = no ; then
	    exec_prefix=$optarg
	fi
	;;

    --prefix)
	echo $prefix
	;;

    --exec-prefix=*)
	exec_prefix=$optarg
	exec_prefix_set=yes
	;;

    --exec-prefix)
	echo $exec_prefix
	;;

    --version)
	echo ixlib 0.96.2
	exit 0
	;;

    --help)
	usage 0
	;;

    --cflags)
        the_flags="-I$includedir "
       	cflags=true
       	;;

    --libs)
       	libs=true
       	;;

    *)
	usage
	exit 1
	;;
    esac
    shift
done

if $cflags; then
    all_flags="$the_flags"
fi

if $libs; then
    all_flags="$all_flags $services $the_libs"
fi

if test -z "$all_flags" || test "x$all_flags" = "x "; then
    exit 1
fi

# Straight out any possible duplicates, but be careful to
# get `-lfoo -lbar -lbaz' for `-lfoo -lbaz -lbar -lbaz'
other_flags=
rev_libs=
for i in $all_flags; do
    case "$i" in
    # a library, save it for later, in reverse order
    -l*) rev_libs="$i $rev_libs" ;;
    *)
	case " $other_flags " in
	*\ $i\ *) ;;				# already there
	*) other_flags="$other_flags $i" ;;	# add it to output
        esac ;;
    esac
done

ord_libs=
for i in $rev_libs; do
    case " $ord_libs " in
    *\ $i\ *) ;;			# already there
    *) ord_libs="$i $ord_libs" ;;	# add it to output in reverse order
    esac
done

echo $other_flags $ord_libs

exit 0