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if test "$ac_cv_header_sys_select_h" = yes ; then
	AC_MSG_CHECKING([if <sys/select.h> is compatible with <sys/time.h>])
	selecth=yes
	if test "$ac_cv_header_sys_time_h" = yes ; then
		AC_TRY_COMPILE([#include <sys/time.h>
		#include <sys/select.h>],[
		fd_set a;
		struct timeval tmval;

		tmval.tv_sec = 0;],selecth=yes,selecth=no)

		if test "$selecth" = yes ; then
			AC_DEFINE(CAN_USE_SYS_SELECT_H)
		fi
	fi
	AC_MSG_RESULT($selecth)
fi
])
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AC_DEFUN(wi_LIB_RESOLV, [
# See if we could access two well-known sites without help of any special
# libraries, like resolv.

AC_TRY_RUN([
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
 
main()
{
	struct hostent *hp1, *hp2;
	int result;

	hp1 = gethostbyname("gatekeeper.dec.com");
	hp2 = gethostbyname("ftp.ncsa.uiuc.edu");
	result = ((hp1 != (struct hostent *) 0) && (hp2 != (struct hostent *) 0));
	exit(! result);
}],look_for_resolv=no,look_for_resolv=yes,look_for_resolv=yes)

AC_MSG_CHECKING([if we need to look for -lresolv])
AC_MSG_RESULT($look_for_resolv)
if test "$look_for_resolv" = yes ; then
AC_CHECK_LIB(resolv,main)
else
	ac_cv_lib_resolv=no
fi
])
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AC_DEFUN(wi_LIB_NSL, [
AC_MSG_CHECKING(if we can use -lnsl)
ac_save_LIBS="$LIBS";
LIBS="$LIBS -lnsl";
AC_CACHE_VAL(r_cv_use_libnsl, [
AC_TRY_RUN(
main() { if (getpwuid(getuid())) exit(0); exit(-1); },
nc_cv_use_libnsl=yes, nc_cv_use_libnsl=no, nc_cv_use_libnsl=no)
])
if test "$nc_cv_use_libnsl" = "no"; then LIBS="$ac_save_LIBS"; fi
AC_MSG_RESULT($nc_cv_use_libnsl)
])dnl

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AC_DEFUN(nc_PATH_PROG_ZCAT, [
AC_PATH_PROG(GZCAT,gzcat)
AC_PATH_PROG(ZCAT,zcat)
if test "x$GZCAT" = x ; then
	if test "x$ZCAT" != x ; then
		# See if zcat is really gzcat.  gzcat has a --version option, regular
		# zcat does not.
		AC_MSG_CHECKING(if zcat is really gzcat in disguise)
		if $ZCAT --version 2> /dev/null ; then
			AC_DEFINE_UNQUOTED(GZCAT, "$ZCAT")
			AC_MSG_RESULT(yes)
		else
			AC_MSG_RESULT(no)
		fi
	fi
else
	AC_DEFINE_UNQUOTED(GZCAT, "$GZCAT")
fi

if test "x$ZCAT" != x ; then
	AC_DEFINE_UNQUOTED(ZCAT, "$ZCAT")
fi
])
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AC_DEFUN(wi_SYSV_EXTRA_DIRS, [
# Use System V because their curses extensions are required.  This must
# be done early so we use the -I and -L in the library checks also.
# This is mostly a Solaris/SunOS hack.  Note that doing this will also
# use all of the other System V libraries and headers.

AC_MSG_CHECKING(for alternative System V libraries)
if test -f /usr/5include/curses.h ; then
	CPPFLAGS="$CPPFLAGS -I/usr/5include"
	LDFLAGS="$LDFLAGS -L/usr/5lib"
	AC_MSG_RESULT(yes)
else
	AC_MSG_RESULT(no)
fi
])
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AC_DEFUN(wi_DEFINE_UNAME, [
# Get first 127 chars of all uname information.  Some folks have
# way too much stuff there, so grab only the first 127.
unam=`uname -a 2>/dev/null | cut -c1-127`
if test "$unam" != "" ; then
	AC_DEFINE_UNQUOTED(UNAME, "$unam")