dlfcn.h man page


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.

dlfcn.h — dynamic linking


#include <dlfcn.h>


The <dlfcn.h> header shall define at least the following symbolic constants 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 modules.
All symbols are not made available for relocation processing 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 *);
char  *dlerror(void);
void  *dlopen(const char *, int);
void  *dlsym(void *restrict, const char *restrict);

The following sections are informative.

See Also

The System Interfaces volume of POSIX.1‐2008, dlclose(), dlerror(), dlopen(), dlsym()


2013 IEEE/The Open Group POSIX Programmer's Manual