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The above notice applies to each file in this directory.

31 March 2010

This directory provides a little test and demonstration of
new NIDR facilities for loading a keyword and contained
keywords (as well, most likely, as routines to be used with
these keywords) from a shared library.  A keyword specified
with

	DYNLIB "libname"

instead of {...}, where the quoted string is the name of the library
to be loaded, causes "libname" to be opened (by dlopen under Linux or
by LoadLibrary under MS Windows).  The library must contain a
routine keyword_add with signature

	KwyWord* keyword_add(void);

whose source is generated by "nidrgen -l inputspec >source",
aside from routines called by keyword handlers in inputspec.
The makefile illustrates creation of some little shared libraries
and their testing with dakreord.  This test runs under Linux.
The shared-library names end in .dll, which works fine on Unix
and Linux systems and is required for MS Windows.

In practice, "nidrgen -l inputspec" would probably create a
file to be #included by a source file that also #includes "nidr.h"
and provides keyword handlers to be conveyed in the shared library.

-- David M. Gay
