The dlopen extension loads a shared library that does not contain a xx_Init entry point on Posix or Windows platforms.
This allows loading extensions that require other shared libraries to be resident before they can resolve their symbol tables.
This extension is a single .c file which should compile cleanly on Posix or Windows systems. It's been tested on Linux, and MS-Windows 95 with VC++ 5.0.
The extension is free and available for download at
http://www.noucorp.com/Tcl/utilities