--- a/src/native/unix/support/apsupport.m4	2022-02-21 15:56:48.000000000 +0400

+++ b/src/native/unix/support/apsupport.m4	2022-02-21 15:58:01.995238670 +0400

@@ -181,6 +186,10 @@

     CFLAGS="$CFLAGS -DCPU=\\\"aarch64\\\""

     HOST_CPU=aarch64

     ;;

+  riscv64)

+    CFLAGS="$CFLAGS -DCPU=\\\"riscv64\\\""

+    HOST_CPU=riscv64

+    ;;

   *)

     AC_MSG_RESULT([failed])

     AC_MSG_ERROR([Unsupported CPU architecture "$host_cpu"]);;