--- configure.orig	2020-04-19 12:39:06 UTC
+++ configure
@@ -35077,7 +35077,7 @@ done
 ##
 
 BUILD_HELPER="NIS"
-for ac_header in sys/types.h rpc/rpc.h rpcsvc/ypclnt.h rpcsvc/yp_prot.h crypt.h
+for ac_header in sys/types.h rpc/rpc.h rpcsvc/ypclnt.h rpcsvc/yp_prot.h rpcsvc/crypt.h
 do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
 ac_fn_cxx_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "
@@ -35092,8 +35092,10 @@ if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
 #define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  BUILD_HELPER=""
+# XXX: On FreeBSD we have to do this to make NIS work
+# until https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=188247
+# is resolved.
+  BUILD_HELPER="NIS"
 fi
 
 done
@@ -35566,7 +35568,7 @@ done
 
   # unconditionally requires crypt(3), for now
   if test "x$ac_cv_func_crypt" != "x"; then
-    for ac_header in unistd.h crypt.h shadow.h
+    for ac_header in unistd.h rpcsvc/crypt.h shadow.h
 do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
 ac_fn_cxx_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
@@ -37958,7 +37960,7 @@ for ac_header in \
   arpa/nameser.h \
   assert.h \
   bstring.h \
-  crypt.h \
+  rpcsvc/crypt.h \
   ctype.h \
   direct.h \
   errno.h \
@@ -38166,6 +38168,7 @@ ac_fn_cxx_check_header_compile "$LINENO" "$ac_header" 
 #include <netinet/ip.h>
 #endif
 #if HAVE_NETINET_IP_COMPAT_H
+#include <net/if.h>	/* IFNAMSIZ */
 #include <netinet/ip_compat.h>
 #endif
 #if HAVE_NETINET_IP_FIL_H
@@ -42213,6 +42216,7 @@ if test "x$enable_ipf_transparent" != "xno" ; then
 #     include <sys/ioccom.h>
 #     include <netinet/in.h>
 
+#     include <net/if.h>	/* IFNAMSIZ */
 #     include <netinet/ip_compat.h>
 #     include <netinet/ip_fil.h>
 #     include <netinet/ip_nat.h>
@@ -42243,6 +42247,7 @@ else
 #       include <sys/ioccom.h>
 #       include <netinet/in.h>
 #undef minor_t
+#       include <net/if.h>	/* IFNAMSIZ */
 #       include <netinet/ip_compat.h>
 #       include <netinet/ip_fil.h>
 #       include <netinet/ip_nat.h>
@@ -42287,6 +42292,7 @@ _ACEOF
 	ip_fil_compat.h \
 	ip_fil.h \
 	ip_nat.h \
+	net/if.h \
 	netinet/ip_compat.h \
 	netinet/ip_fil_compat.h \
 	netinet/ip_fil.h \
@@ -42316,6 +42322,7 @@ ac_fn_cxx_check_header_compile "$LINENO" "$ac_header" 
 #if HAVE_IP_COMPAT_H
 #include <ip_compat.h>
 #elif HAVE_NETINET_IP_COMPAT_H
+#include <net/if.h>	/* IFNAMSIZ */
 #include <netinet/ip_compat.h>
 #endif
 #if HAVE_IP_FIL_H
@@ -42379,8 +42386,7 @@ _ACEOF
 
 
 fi
-ac_fn_cxx_check_member "$LINENO" "struct natlookup" "nl_realipaddr.in6"
-   "ac_cv_member_struct_natlookup_nl_realipaddr_in6___" "
+ac_fn_cxx_check_member "$LINENO" "struct natlookup" "nl_realipaddr.in6" "ac_cv_member_struct_natlookup_nl_realipaddr_in6___" "
 #if USE_SOLARIS_IPFILTER_MINOR_T_HACK
 #define minor_t fubar
 #endif