-## Copyright (C) 1996-2017 The Squid Software Foundation and contributors
+## Copyright (C) 1996-2023 The Squid Software Foundation and contributors
##
## Squid software is distributed under GPLv2+ license and includes
## contributions from numerous individuals and organizations.
##
BUILD_HELPER="NIS"
-AC_CHECK_HEADERS([sys/types.h rpc/rpc.h rpcsvc/ypclnt.h rpcsvc/yp_prot.h crypt.h],[],[BUILD_HELPER=""],AC_INCLUDES_DEFAULT([
+AC_CHECK_HEADERS([ \
+ sys/types.h \
+ rpc/rpc.h \
+ rpcsvc/ypclnt.h \
+ rpcsvc/yp_prot.h \
+ crypt.h \
+],[],[
+ BUILD_HELPER=""
+],[
+ AC_INCLUDES_DEFAULT([
#if HAVE_RPC_RPC_H
#include <rpc/rpc.h>
#endif
-]))
+ ])
+])