https://dev.gnupg.org/T6442

Index: configure
--- configure.orig
+++ configure
@@ -18809,7 +18809,7 @@ _ACEOF
 fi
 done
 
-for ac_func in explicit_bzero explicit_memset getentropy
+for ac_func in explicit_bzero explicit_memset getentropy getrandom
 do :
   as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
 ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"