Version Symbol Section

The version symbol section is defined by the type SHT_SUNW_versym, and consists of an array of elements having the following structure:

typedef Elf32_Half      Elf32_Versym;
typedef Elf64_Half      Elf64_Versym;

The number of elements of the array must equal the number of symbol table entries contained in the associated symbol table. This number is determined by the section's sh_link value. Each element of the array contains a single index that can have the values shown in the following table.

Table 7-32 ELF Version Dependency Indexes

Name	Value	Meaning
VER_NDX_LOCAL	0	Symbol has local scope.
VER_NDX_GLOBAL	1	Symbol has global scope (assigned to base version definition).
	>1	Symbol has global scope (assigned to user-defined version definition).

Any index values greater than VER_NDX_GLOBAL must correspond to the vd_ndx value of an entry in the SHT_SUNW_verdef section. If no index values greater than VER_NDX_GLOBAL exist, then no SHT_SUNW_verdef section need be present.