-#undef _POSIX_C_SOURCE
-
-#if OS_RELEASE > 54
-/* There were some bugs with preprocessor symbol interaction, which
- were not fixed until 2.5. */
-#define __EXTENSIONS__ 1
-
-#undef _XOPEN_SOURCE
-#define _XOPEN_SOURCE 1
-
-#undef _XOPEN_SOURCE_EXTENDED
-#define _XOPEN_SOURCE_EXTENDED 1
-#endif /* > Solaris 2.4 */
-