HAVE_WRITEV       196 srclib/apr/file_io/os2/readwrite.c #ifdef HAVE_WRITEV
HAVE_WRITEV       229 srclib/apr/file_io/unix/readwrite.c #ifdef HAVE_WRITEV
HAVE_WRITEV       190 srclib/apr/network_io/unix/sendrecv.c #ifdef HAVE_WRITEV
HAVE_WRITEV       248 srclib/apr/network_io/unix/sendrecv.c #if defined(__linux__) && defined(HAVE_WRITEV)