dnl CF_CHECK_FD_SET version: 4 updated: 2002/10/09 20:00:37
dnl ---------------
dnl Check if the fd_set type and corresponding macros are defined.
AC_DEFUN([CF_CHECK_FD_SET],
[
AC_REQUIRE([CF_TYPE_FD_SET])
AC_CACHE_CHECK([for fd_set macros],cf_cv_macros_fd_set,[
AC_TRY_COMPILE([
#include <sys/types.h>
#if USE_SYS_SELECT_H
# include <sys/select.h>
#else
# ifdef HAVE_SYS_TIME_H
#  include <sys/time.h>
#  ifdef TIME_WITH_SYS_TIME
#   include <time.h>
#  endif
# else
#  include <time.h>
# endif
#endif
],[
	fd_set read_bits;
	FD_ZERO(&read_bits);
	FD_SET(0, &read_bits);],
	[cf_cv_macros_fd_set=yes],
	[cf_cv_macros_fd_set=no])])
test $cf_cv_macros_fd_set = yes && AC_DEFINE(HAVE_TYPE_FD_SET)
])dnl
