The
elf_version() function is used to query the current operating version of the ELF library, and to inform the ELF library about the application'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.