--- ./configure.ac	2012-04-24 19:00:29.000000000 -0400
+++ ../../work2/mosh-1.1.98/configure.ac	2012-04-24 22:30:31.000000000 -0400
@@ -244,7 +244,8 @@
 AC_CHECK_DECL([forkpty],
   [AC_DEFINE([FORKPTY_IN_LIBUTIL], [1],
      [Define if libutil.h necessary for forkpty().])],
-  , [[#include <libutil.h>]])
+  , [[#include <sys/types.h>
+  #include <libutil.h>]])
 
 AC_ARG_VAR([poll_CFLAGS], [C compiler flags for poll])
 AC_ARG_VAR([poll_LIBS], [linker flags for poll])