library.dynam {base}

R Documentation

Loading Shared Libraries

Description

Load the specified file of compiled code if it has not been loaded already.

Usage

library.dynam(chname, package = .packages(), lib.loc = NULL,
              verbose = getOption("verbose"), file.ext, ...)

Arguments

chname	a character string naming a shared library to load.
package	a character vector with the names of packages to search through.
lib.loc	a character vector describing the location of R library trees to search through, or NULL. The default value of NULL corresponds to all libraries currently known.
verbose	a logical value indicating whether an announcement is printed on the console before loading the shared library. The default value is taken from the verbose entry in the system options.
file.ext	the extension to append to the file name to specify the library to be loaded. This defaults to the appropriate value for the operating system.
...	additional arguments needed by some libraries that are passed to the call to dyn.load to control how the library is loaded.

Details

This is designed to be used inside a package rather than at the command line, and should really only be used inside .First.lib(). The system-specific extension for shared libraries (e.g., ‘.so’ or ‘.sl’ on Unix systems) should not be added.

Value

The .Dyn.libs vector with the names of packages which have used library.dynam in the current R session.

It is returned as invisible, unless the chname argument is missing.

Users should never set .Dyn.libs directly.

See Also

.First.lib, library, dyn.load, .packages, .libPaths

SHLIB for how to create suitable shared libraries.

Examples

library.dynam()# which packages have been ``dynamically loaded''

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