Checking patch posix/getopt.c...
error: while searching for:
# define _(msgid) gettext (msgid)
/* When used standalone, flockfile and funlockfile might not be
   available.  */
# ifndef _POSIX_THREAD_SAFE_FUNCTIONS
#  define flockfile(fp) /* nop */
#  define funlockfile(fp) /* nop */
# endif

error: patch failed: posix/getopt.c:45
error: posix/getopt.c: patch does not apply