We now compile on systems where ENOTSUP is not defined.

acls.c

@@ -510,7 +510,7 @@ static int get_rsync_acl(const char *fname, rsync_acl *racl,
 		if (!ok) {
 			return -1;
 		}
-	} else if (errno == ENOTSUP || errno == ENOSYS) {
+	} else if (no_acl_syscall_error(errno)) {
 		/* ACLs are not supported, so pretend we have a basic ACL. */
 		if (type == SMB_ACL_TYPE_ACCESS)
 			rsync_acl_fake_perms(racl, mode);
@@ -1043,7 +1043,9 @@ int default_perms_for_dir(const char *dir)
 	if (sacl == NULL) {
 		/* Couldn't get an ACL.  Darn. */
 		switch (errno) {
+#ifdef ENOTSUP
 		case ENOTSUP:
+#endif
 		case ENOSYS:
 			/* No ACLs are available. */
 			break;

lib/sysacls.h

@@ -36,5 +36,6 @@ int sys_acl_delete_def_file(const char *name);
 int sys_acl_free_text(char *text);
 int sys_acl_free_acl(SMB_ACL_T the_acl);
 int sys_acl_free_qualifier(void *qual, SMB_ACL_TAG_T tagtype);
+int no_acl_syscall_error(int err);
 
 #endif /* SUPPORT_ACLS */