Correctly pass the -package flag to the java interface build
--- a/interfaces/CMakeLists.txt
+++ b/interfaces/CMakeLists.txt
@@ -97,8 +97,9 @@
         INCLUDE_DIRECTORIES(${JNI_INCLUDE_DIRS})
         set(swigjava_LIBS ${JNI_LIBRARIES} ${CSOUNDLIB} ${LIBSNDFILE_LIBRARY} libcsnd)
 
+        list(APPEND javaSwigOptions -package csnd)
         SET_SOURCE_FILES_PROPERTIES(java_interface.i PROPERTIES CPLUSPLUS ON)
-        SET_SOURCE_FILES_PROPERTIES(java_interface.i SWIG_FLAGS "-package" "csnd")
+        SET_SOURCE_FILES_PROPERTIES(java_interface.i PROPERTIES SWIG_FLAGS "${javaSwigOptions}")
         SWIG_ADD_MODULE(_jcsound java java_interface.i)
         SWIG_LINK_LIBRARIES(_jcsound ${swigjava_LIBS})