Added checks for writev(2) and <sys/uio.h>.

Rev: src/modules/files/configure.in:1.63

src/modules/files/configure.in

-# $Id: configure.in,v 1.62 1999/02/15 20:40:33 grubba Exp $
+# $Id: configure.in,v 1.63 1999/03/31 22:03:27 grubba Exp $
 AC_INIT(file.c)
 AC_CONFIG_HEADER(file_machine.h)
 
@@ -6,7 +6,8 @@ AC_MODULE_INIT()
 
 AC_DEFINE(WITH_TERMIOS)
 
-AC_HAVE_HEADERS(sys/types.h arpa/inet.h sys/socketvar.h netinet/in.h poll.h sys/poll.h \
+AC_HAVE_HEADERS(sys/types.h arpa/inet.h sys/socketvar.h netinet/in.h \
+ poll.h sys/poll.h sys/uio.h \
  sys/mount.h ustat.h sys/statfs.h sys/statvfs.h sys/vfs.h sys/param.h \
  sys/socket.h sys/stream.h sys/protosw.h netdb.h sys/sysproto.h winsock.h \
  direct.h sys/wait.h process.h sys/file.h net/netdb.h limits.h unistd.h \
@@ -15,7 +16,8 @@ AC_HEADER_DIRENT
 AC_CHECK_LIB(bind, __inet_ntoa)
 AC_CHECK_LIB(socket, socket)
 
-AC_HAVE_FUNCS(getwd perror readdir_r statvfs statfs ustat lseek64 lstat socketpair)
+AC_HAVE_FUNCS(getwd perror readdir_r statvfs statfs ustat lseek64 lstat \
+ socketpair writev)
 
 AC_MSG_CHECKING(if mkdir takes 1 or 2 arguments)
 AC_CACHE_VAL(pike_cv_func_mkdir_args,[