dlfcn.h(0P) POSIX Programmer's Manual dlfcn.h(0P)PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the corresponding
Linux manual page for details of Linux behavior), or the interface may
not be implemented on Linux.
NAMEdlfcn.h — dynamic linking
The <dlfcn.h> header shall define at least the following symbolic con‐
stants for use in the construction of a dlopen() mode argument:
RTLD_LAZY Relocations are performed at an implementation-defined
RTLD_NOW Relocations are performed when the object is loaded.
RTLD_GLOBAL All symbols are available for relocation processing of
RTLD_LOCAL All symbols are not made available for relocation pro‐
cessing by other modules.
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 POSIX.1‐2008, dlclose(), dlerror(),
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
cal and Electronics Engineers, Inc and The Open Group. (This is
POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) 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.unix.org/online.html .
Any typographical or formatting errors that appear in this page are
most likely to have been introduced during the conversion of the source
files to man page format. To report such errors, see https://www.ker‐
IEEE/The Open Group 2013 dlfcn.h(0P)