NetBSD/dist/ntp/arlib/configure.in

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# Process this file with autoconf to produce a configure script.
AC_INIT
AM_INIT_AUTOMAKE(arlib, 1.0)
AC_CONFIG_SRCDIR([arlib.c])
#AM_CONFIG_HEADER([config.h])
# Checks for programs.
AC_PROG_CC
AC_PROG_RANLIB
# Checks for libraries.
AC_CHECK_FUNC(gethostent, , AC_CHECK_LIB(nsl, gethostent, , , -lsocket))
AC_CHECK_FUNC(setsockopt, , AC_CHECK_LIB(socket, setsockopt))
AC_CHECK_FUNC(res_init, , AC_CHECK_LIB(resolv, res_init))
# Checks for header files.
dnl AC_CHECK_HEADERS([errno.h fcntl.h netdb.h netinet/in.h strings.h sys/socket.h sys/time.h])
# Checks for typedefs, structures, and compiler characteristics.
dnl AC_HEADER_TIME
AC_CHECK_TYPE(u_int32_t, ,
[AC_DEFINE(u_int32_t, [unsigned int], [Unsigned 32-bit type])],[
#include <sys/types.h>
#include <netinet/in.h>])
AC_CACHE_CHECK([for name of NS address list], [ac_cv_var_ns_addr_list],
[ans=''
# Normal
AC_TRY_COMPILE([
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <resolv.h>], [ return sizeof(_res.nsaddr_list);],
[ans=nsaddr_list],
[# Ultrix
AC_TRY_COMPILE([
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <resolv.h>], [ return sizeof(_res.ns_list);],
[ans=ns_list])])
case "$ans" in
'') AC_MSG_RESULT([???])
AC_MSG_ERROR([Can't find nameserver address list in _res])
;;
esac
ac_cv_var_ns_addr_list=$ans])
AC_DEFINE_UNQUOTED(NS_ADDR_LIST, $ans, [The name of the NS address list in _res])
# Checks for library functions.
dnl AC_HEADER_STDC
dnl AC_FUNC_MALLOC
dnl AC_CHECK_FUNCS([bzero inet_ntoa select socket])
AC_CONFIG_FILES([Makefile])
AC_OUTPUT