\HeaderA{INSTALL}{Install Add-on Packages}{INSTALL}
\keyword{utilities}{INSTALL}
\begin{Description}\relax
Utility for installing add-on packages.
\end{Description}
\begin{Usage}
\begin{verbatim}
R CMD INSTALL [options] [-l lib] pkgs
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{pkgs}] A space-separated list with the path names of the packages to be
installed.
\item[\code{lib}] the path name of the \R{} library tree to install to.
\item[\code{options}] a space-separated list of options through which in
particular the process for building the help files can be
controlled.  Options should only be given once.
Use \code{R CMD INSTALL --help} for the current list of options.

\end{ldescription}
\end{Arguments}
\begin{Details}\relax
This will stop at the first error, so if you want all the \code{pkgs}
to be tried, call this via a shell \code{for} or \code{foreach} loop.

If used as \code{R CMD INSTALL pkgs} without explicitly specifying
\code{lib}, packages are installed into the library tree rooted at the
first directory in the library path which would be used by \R{} run in
the current environment.

To install into the library tree \code{lib}, use
\code{R CMD INSTALL -l lib pkgs}.  This prepends \code{lib} to
\env{R\_LIBS} for duration of the install, so required packages in the
installation directory will be found (and used in preference to those
in other libraries).

Both \code{lib} and the elements of \code{pkgs} may be absolute or
relative path names of directories.  \code{pkgs} may also contain
names of package/bundle archive files of the form
\file{pkg\_version.tar.gz} as obtained from CRAN: these are then
extracted in a temporary directory.  Finally, binary package/bundle
archive files (as created by \code{R CMD build --binary} can be supplied.

Some package sources contain a \file{configure} script that can be
passed arguments or variables via the option \option{--configure-args}
and \option{--configure-vars}, respectively, if necessary.  The latter
is useful in particular if libraries or header files needed for the
package are in non-system directories.  In this case, one can use the
configure variables \code{LIBS} and \code{CPPFLAGS} to specify these
locations (and set these via \option{--configure-vars}), see section
\dQuote{Configuration variables} in \dQuote{R Installation and
Administration} for more information.  (If these are used more than
once on the command line, only the last instance is used.)  One can
bypass the configure mechanism using the option \option{--no-configure}.

If \option{--no-docs} is given, no help files are built.  Options
\option{--no-text}, \option{--no-html}, and \option{--no-latex} suppress
creating the text, HTML, and LaTeX versions, respectively.  The
default is to build help files in all three versions.

If the attempt to install the package fails, leftovers are removed.
If the package was already installed, the old version is restored.
This happens either if a command encounters an error or if the
install is interrupted from the keyboard: after cleaning up the script
terminates.

Use \code{R CMD INSTALL --help} for more usage information.
\end{Details}
\begin{Section}{Packages using the methods package}
Packages that require the methods package and make use functions such
as \code{\LinkA{setMethod}{setMethod}} or \code{\LinkA{setClass}{setClass}}, should be
installed using lazy-loading (or, deprecated, by creating a binary
image): use the field \code{LazyLoad} in the \file{DESCRIPTION} file
to ensure this.
\end{Section}
\begin{SeeAlso}\relax
\code{\LinkA{REMOVE}{REMOVE}} and \code{\LinkA{library}{library}} for information on
using several library trees;
\code{\LinkA{update.packages}{update.packages}} for automatic update of packages using
the internet (or other \R{} level installation of packages, such as by
\code{install.packages}).

The section on \dQuote{Add-on packages} in \dQuote{R Installation and
Administration} and the chapter on \dQuote{Creating R packages} in
\dQuote{Writing \R{} Extensions} (see \code{\LinkA{RShowDoc}{RShowDoc}} and the
\file{doc/manual} subdirectory of the \R{} source tree).
\end{SeeAlso}

