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dlfcn.h - dynamic linking
The <dlfcn.h> header shall define at least the following macros for use
in the construction of a dlopen() mode argument:
Relocations are performed at an implementation-defined time.
Relocations are performed when the object is loaded.
All symbols are available for relocation processing of other
All symbols are not made available for relocation processing by
The following shall be declared as functions and may also be defined as
macros. Function prototypes shall be provided.
int dlclose(void *);
void *dlopen(const char *, int);
void *dlsym(void *restrict, const char *restrict);
The following sections are informative.
The System Interfaces volume of IEEE Std 1003.1-2001, dlopen(),
dlclose(), dlsym(), dlerror()
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online
at http://www.opengroup.org/unix/online.html .