diff --git a/cmake/config.guess b/cmake/config.guess

index ccb30f4e7..6506ef56b 100644

--- a/cmake/config.guess

+++ b/cmake/config.guess

@@ -928,6 +928,9 @@ EOF

     m68*:Linux:*:*)

 	echo ${UNAME_MACHINE}-unknown-linux-gnu

 	exit ;;

+    riscv64*:Linux:*:*)

+	echo ${UNAME_MACHINE}-unknown-linux-gnu

+	exit ;;

     mips:Linux:*:* | mips64:Linux:*:*)

 	eval $set_cc_for_build

 	sed 's/^	//' << EOF >$dummy.c