diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9ad02fdc9610c8448aea11dbacea9dae8e1219fa..4b15cfe43190b8c69cb8378aa17323eddd94a49c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -129,6 +129,8 @@ if (OS_ARCH STREQUAL "aarch64")
     endif (USE_H1620)
 
     add_compile_options(-mtune=cortex-a72 -fsigned-char -g -ggdb3 -march=armv8-a+crc -funwind-tables)
+elseif (OS_ARCH STREQUAL "riscv64")
+    add_compile_options(-march=rv64g)
 else ()
     add_compile_options(-msse4.2 )
 endif ()