Mini Shell

#!/usr/bin/sh

prefix=/usr
exec_prefix=/usr
includedir=/usr/include
if [ "`ldd /bin/sh | grep lib64`" = "" ]
then
    libdir=${exec_prefix}/lib
else
    libdir=${exec_prefix}/lib64
fi
cflags=
libs=

usage()
{
    cat <<EOF
Usage: xml2-config [OPTION]

Known values for OPTION are:

  --prefix=DIR		change libxml prefix [default $prefix]
  --exec-prefix=DIR	change libxml exec prefix [default $exec_prefix]
  --libs		print library linking information
                        add --dynamic to print only shared libraries
  --cflags		print pre-processor and compiler flags
  --modules		module support enabled
  --help		display this help and exit
  --version		output version information
EOF

    exit $1
}

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

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
	includedir=$prefix/include
	libdir=$prefix/lib
	;;

    --prefix)
	echo $prefix
	;;

    --exec-prefix=*)
      exec_prefix=$optarg
      libdir=$exec_prefix/lib
      ;;

    --exec-prefix)
      echo $exec_prefix
      ;;

    --version)
	echo 2.9.13
	exit 0
	;;

    --help)
	usage 0
	;;

    --cflags)
        cflags="-I${includedir}/libxml2 "
       	;;

    --libtool-libs)
	if [ -r ${libdir}/libxml2.la ]
	then
	    echo ${libdir}/libxml2.la
	fi
        ;;

    --modules)
       	echo 1
       	;;

    --libs)
        if [ "$2" = "--dynamic" ]; then
            shift
            libs="-lxml2"
        else
            libs="-lxml2 -lz  -llzma     -lm  "
        fi

        if [ "-L${libdir}" != "-L/usr/lib" -a "-L${libdir}" != "-L/usr/lib64" ]; then
            libs="-L${libdir} $libs"
        fi

        libs="$libs "
        ;;

    *)
	usage 1
	;;
    esac
    shift
done

if test -n "$cflags$libs"; then
    echo $cflags $libs
fi

exit 0