Fix building without TTS (#2159)

@@ -393,9 +393,10 @@ if(SHERPA_ONNX_ENABLE_TTS)
   set(ESPEAK_NG_DIR ${espeak_ng_SOURCE_DIR})
   message(STATUS "ESPEAK_NG_DIR: ${ESPEAK_NG_DIR}")
   include(piper-phonemize)
-  include(cppjieba) # For Chinese TTS. It is a header-only C++ library
 endif()
 
+include(cppjieba) # It is a header-only C++ library
+
 if(SHERPA_ONNX_ENABLE_SPEAKER_DIARIZATION)
   include(hclust-cpp)
 endif()