diff -Nurp a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt	2023-08-03 13:56:19.000000000 +0000
+++ b/CMakeLists.txt	2023-08-03 21:28:06.662790653 +0000
@@ -115,7 +115,6 @@ INCLUDE_DIRECTORIES("${CMAKE_SOURCE_DIR}
         "${CMAKE_SOURCE_DIR}/contrib/fpconv"
         "${CMAKE_SOURCE_DIR}/contrib/libottery"
         "${CMAKE_SOURCE_DIR}/contrib/cdb"
-        "${CMAKE_SOURCE_DIR}/contrib/snowball/include"
         "${CMAKE_SOURCE_DIR}/contrib/librdns"
         "${CMAKE_SOURCE_DIR}/contrib/aho-corasick"
         "${CMAKE_SOURCE_DIR}/contrib/lc-btrie"
@@ -617,7 +616,6 @@ ELSE ()
     ADD_DEFINITIONS(-DSYS_ZSTD)
 ENDIF ()
 IF (ENABLE_SNOWBALL MATCHES "ON")
-    ADD_SUBDIRECTORY(contrib/snowball)
     SET(WITH_SNOWBALL 1)
 ENDIF ()
 ADD_SUBDIRECTORY(contrib/libucl)