diff --git a/src/native/unix/support/apsupport.m4 b/src/native/unix/support/apsupport.m4
index d9e94fb..51819b4 100644
--- a/src/native/unix/support/apsupport.m4
+++ b/src/native/unix/support/apsupport.m4
@@ -177,7 +177,13 @@ AC_DEFUN(AP_SUPPORTED_HOST,[
   aarch64*)
     CFLAGS="$CFLAGS -DCPU=\\\"aarch64\\\""
     supported_os="aarch64"
-    HOST_CPU=aarch64;;
+    HOST_CPU=aarch64
+    ;;
+  riscv64)
+    CFLAGS="$CFLAGS -DCPU=\\\"riscv64\\\""
+    supported_os="riscv64"
+    HOST_CPU=riscv64
+    ;;
   *)
     AC_MSG_RESULT([failed])
     AC_MSG_ERROR([Unsupported CPU architecture "$host_cpu"]);;