$NetBSD: patch-configure,v 1.3 2020/05/24 01:22:16 joerg Exp $

NetBSD has xattr and acl.

--- configure.orig	2020-02-26 14:11:43.000000000 +0000
+++ configure
@@ -30085,7 +30085,7 @@ $as_echo "no" >&6; }
    fi
 
             if test $have_acl = yes -a \
-      x${HAVE_FREEBSD_OS_TRUE} = x; then
+      \( x${HAVE_FREEBSD_OS_TRUE} = x -o x${HAVE_NETBSD_OS_TRUE} = x \); then
       { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ACL_TYPE_NFS4 in acl.h include file" >&5
 $as_echo_n "checking for ACL_TYPE_NFS4 in acl.h include file... " >&6; }
       grep ACL_TYPE_NFS4 /usr/include/sys/acl.h > /dev/null 2>&1
@@ -30232,6 +30232,9 @@ $as_echo "#define HAVE_ACL 1" >>confdefs
 	 if test x${HAVE_FREEBSD_OS_TRUE} = x; then
 	    ACLOBJS="bacl.c bacl_freebsd.c"
 	 fi
+	 if test x${HAVE_NETBSD_OS_TRUE} = x; then
+	    ACLOBJS="bacl.c bacl_freebsd.c"
+	 fi
 	 if test x${HAVE_DARWIN_OS_TRUE} = x; then
 	    ACLOBJS="bacl.c bacl_osx.c"
 	 fi
@@ -30706,6 +30709,9 @@ $as_echo "#define HAVE_XATTR 1" >>confde
 	 if test x${HAVE_FREEBSD_OS_TRUE} = x; then
 	    XATTROBJS="bxattr.c bxattr_freebsd.c"
 	 fi
+	 if test x${HAVE_NETBSD_OS_TRUE} = x; then
+	    XATTROBJS="bxattr.c bxattr_netbsd.c"
+	 fi
 	 if test x${HAVE_DARWIN_OS_TRUE} = x; then
 	    XATTROBJS="bxattr.c bxattr_osx.c"
 	 fi