-void SIMIX_ctx_thread_factory_init(smx_context_factory_t *factory);
-void SIMIX_ctx_sysv_factory_init(smx_context_factory_t *factory);
-void SIMIX_ctx_raw_factory_init(smx_context_factory_t *factory);
-void SIMIX_ctx_boost_factory_init(smx_context_factory_t *factory);
+XBT_PRIVATE void SIMIX_ctx_thread_factory_init(smx_context_factory_t *factory);
+XBT_PRIVATE void SIMIX_ctx_sysv_factory_init(smx_context_factory_t *factory);
+XBT_PRIVATE void SIMIX_ctx_raw_factory_init(smx_context_factory_t *factory);
+XBT_PRIVATE void SIMIX_ctx_boost_factory_init(smx_context_factory_t *factory);