Index: MultiSource/Applications/CMakeLists.txt
===================================================================
--- MultiSource/Applications/CMakeLists.txt
+++ MultiSource/Applications/CMakeLists.txt
@@ -32,7 +32,14 @@
 endif()
 if(NOT ARCH STREQUAL "XCore")
   if(NOT TARGET_OS STREQUAL "AIX")
-    add_subdirectory(ClamAV)
+      if(NOT ARCH STREQUAL "CSKY")
+      # This test has problems running on CSKY with readdir getting wrong result.
+      # It's because the csky libc implementation can not avoid such bug
+      # at https://sourceware.org/bugzilla/show_bug.cgi?id=23960#c64.
+      # When the csky libc implementation changed, like riscv implementation,
+      # it should remove. So just guard it temporarily.
+        add_subdirectory(ClamAV)
+      endif()
   endif()
   add_subdirectory(lemon)
   add_subdirectory(siod)