freebsd man page for elf_version

ELF_VERSION(3)						   BSD Library Functions Manual 					    ELF_VERSION(3)

NAME
     elf_version -- retrieve or set ELF library operating version

LIBRARY
     ELF Access Library (libelf, -lelf)

SYNOPSIS
     #include <libelf.h>

     unsigned int
     elf_version(unsigned int version);

DESCRIPTION
     The elf_version() function is used to query the current operating version of the ELF library, and to inform the ELF library about the appli-
     cation's desired operating version.

     If the argument version is EV_NONE, the elf_version() function returns the currently configured operating version for the ELF library.

     If the argument version is not EV_NONE, and if argument version is supported by the ELF library, function elf_version() sets the library's
     operating version to version, and returns the previous value of the operating version.  If argument version cannot be supported, then the
     elf_version() function returns EV_NONE.

RETURN VALUES
     The elf_version() function returns the currently configured ELF library version, or EV_NONE if an unsupported version is requested.

EXAMPLES
     An application program would inform the ELF library about its desired operating version and check for an error using the following code snip-
     pet:

	   if (elf_version(EV_CURRENT) == EV_NONE)
		   err(EXIT_FAILURE, "ELF library too old");

ERRORS
     Function elf_version() may fail with the following error:

     [ELF_E_VERSION]   An unsupported library version number was requested.

SEE ALSO
     elf(3), gelf(3)

BSD
								 November 9, 2011							       BSD