+ AC_CHECK_TYPES([struct pollfd], [AC_DEFINE(HAVE_STRUCT_POLLFD)], ,
+ [#include <sys/poll.h>])
+ AC_CHECK_TYPES([struct stat], [AC_DEFINE(HAVE_STRUCT_STAT)], ,
+ [#include <sys/types.h>
+ #include <sys/stat.h>
+ #include <unistd.h>])
+ AC_CHECK_TYPES([struct timeval], [AC_DEFINE(HAVE_STRUCT_TIMEVAL)], ,
+ [#include <sys/time.h>
+ #include <sys/types.h>
+ #include <utime.h>])
+ AC_CHECK_TYPES([struct timezone], [AC_DEFINE(HAVE_STRUCT_TIMEZONE)], ,
+ [#include <sys/time.h>])