Dynamic Linking of shared libraries

The interface defined in this section allows the user to load shared libraries (.so files on most Unix systems). This interface is portable to all machines providing the function dlopen(), normally from the library -ldl. To enable it, SWI-Prolog must be configured using

% sh configure --enable-dlopen

open_shared_object( +File, -Handle)

  File is the name of a .so file (see your C programmers documentation on how to create a .so file). This file is attached to the current process and Handle is unified with a handle to the shared object.

close_shared_object( +Handle)

  Detach the shared object identified by Handle.

call_shared_object_function( +Handle, +Function)

  Call the named function in the loaded shared library. The function is called without arguments and the return-value is ignored. Normally this function installs foreign language predicates using calls to PL_register_foreign().