dlsym

Syntax

#include <dlfcn.h> void *dlsym (void *handle, const char *symbol_name);

Description

This function get the address of a symbol defined in a shared loadable image.

The handle argument is the value returned from a call to dlopen, or the special value RTLD_DEFAULT which will search all symbols in the global scope.

The symbol_name is the assembler name, not the C name. For DJGPP/COFF prepend an underscore in front.

Return Value

Returns NULL on failure, pointer to requested symbol on success.

Portability

ANSI/ISO C	No
POSIX	1003.1-2001; not 1003.2-1992