source: MondoRescue/branches/3.2/mindi-busybox/applets/install.sh

#!/bin/sh

export LC_ALL=POSIX
export LC_CTYPE=POSIX

prefix=$1
if [ -z "$prefix" ]; then
    echo "usage: applets/install.sh DESTINATION [--symlinks/--hardlinks/--scriptwrapper]"
    exit 1
fi

h=`sort busybox.links | uniq`

linkopts=""
scriptwrapper="n"
cleanup="0"
noclobber="0"
case "$2" in
    --hardlinks)     linkopts="-f";;
    --symlinks)      linkopts="-fs";;
    --scriptwrapper) scriptwrapper="y";swrapall="y";;
    --sw-sh-hard)    scriptwrapper="y";linkopts="-f";;
    --sw-sh-sym)     scriptwrapper="y";linkopts="-fs";;
    --cleanup)       cleanup="1";;
    --noclobber)     noclobber="1";;
    "")              h="";;
    *)               echo "Unknown install option: $2"; exit 1;;
esac

if [ -n "$DO_INSTALL_LIBS" ] && [ "$DO_INSTALL_LIBS" != "n" ]; then
    # get the target dir for the libs
    # assume it starts with lib
    libdir=$($CC -print-file-name=libc.so | \
         sed -n 's%^.*\(/lib[^\/]*\)/libc.so%\1%p')
    if test -z "$libdir"; then
        libdir=/lib
    fi

    mkdir -p "$prefix/$libdir" || exit 1
    for i in $DO_INSTALL_LIBS; do
        rm -f "$prefix/$libdir/$i" || exit 1
        if [ -f "$i" ]; then
            cp -pPR "$i" "$prefix/$libdir/" || exit 1
            chmod 0644 "$prefix/$libdir/$i" || exit 1
        fi
    done
fi

if [ "$cleanup" = "1" ] && [ -e "$prefix/bin/busybox" ]; then
    inode=`ls -i "$prefix/bin/busybox" | awk '{print $1}'`
    sub_shell_it=`
        cd "$prefix"
        for d in usr/sbin usr/bin sbin bin; do
            pd=$PWD
            if [ -d "$d" ]; then
                cd "$d"
                ls -iL . | grep "^ *$inode" | awk '{print $2}' | env -i xargs rm -f
            fi
            cd "$pd"
        done
        `
    exit 0
fi

rm -f "$prefix/bin/busybox" || exit 1
mkdir -p "$prefix/bin" || exit 1
install -m 755 busybox "$prefix/bin/busybox" || exit 1

for i in $h; do
    appdir=`dirname "$i"`
    mkdir -p "$prefix/$appdir" || exit 1
    if [ "$scriptwrapper" = "y" ]; then
        if [ "$swrapall" != "y" ] && [ "$i" = "/bin/sh" ]; then
            ln $linkopts busybox "$prefix/$i" || exit 1
        else
            rm -f "$prefix/$i"
            echo "#!/bin/busybox" >"$prefix/$i"
            chmod +x "$prefix/$i"
        fi
        echo "  $prefix/$i"
    else
        if [ "$2" = "--hardlinks" ]; then
            bb_path="$prefix/bin/busybox"
        else
            case "$appdir" in
            /)
                bb_path="bin/busybox"
            ;;
            /bin)
                bb_path="busybox"
            ;;
            /sbin)
                bb_path="../bin/busybox"
            ;;
            /usr/bin | /usr/sbin)
                bb_path="../../bin/busybox"
            ;;
            *)
                echo "Unknown installation directory: $appdir"
                exit 1
            ;;
            esac
        fi
        if [ "$noclobber" = "0" ] || [ ! -e "$prefix/$i" ]; then
            echo "  $prefix/$i -> $bb_path"
            ln $linkopts "$bb_path" "$prefix/$i" || exit 1
        else
            echo "  $prefix/$i already exists"
        fi
    fi
done

exit 0