+typedef struct s4u_Actor s4u_Actor;
+typedef struct s4u_Barrier s4u_Barrier;
+typedef struct s4u_Comm s4u_Comm;
+typedef struct s4u_Exec s4u_Exec;
+typedef struct s4u_Host s4u_Host;
+typedef struct s4u_Link s4u_Link;
+typedef struct s4u_File s4u_File;
+typedef struct s4u_ConditionVariable s4u_ConditionVariable;
+typedef struct s4u_Mailbox s4u_Mailbox;
+typedef struct s4u_Mutex s4u_Mutex;
+typedef struct s4u_Semaphore s4u_Semaphore;
+typedef struct s4u_Disk s4u_Disk;
+typedef struct s4u_Storage s4u_Storage;
+typedef struct s4u_NetZone s4u_NetZone;
+typedef struct s4u_VM s4u_VM;
+XBT_ATTRIB_DEPRECATED_v330("Please stop using this type alias") typedef enum kernel_activity_state e_smx_state_t;
+
+typedef struct s_smx_timer* smx_timer_t;
+typedef struct s_smx_actor* smx_actor_t;
+typedef struct s_smx_activity* smx_activity_t;
+typedef struct s_smx_cond_t* smx_cond_t;
+typedef struct s_smx_mailbox* smx_mailbox_t;
+typedef struct s_smx_mutex* smx_mutex_t;
+typedef struct s_smx_sem* smx_sem_t;
+
+#endif
+
+/** Pointer to a SimGrid barrier object */
+typedef s4u_Barrier* sg_bar_t;
+/** Constant pointer to a SimGrid barrier object */
+typedef const s4u_Barrier* const_sg_bar_t;
+typedef s4u_Comm* sg_comm_t;
+typedef const s4u_Comm* const_sg_comm_t;
+typedef s4u_Exec* sg_exec_t;
+typedef const s4u_Exec* const_sg_exec_t;
+typedef s4u_ConditionVariable* sg_cond_t;
+typedef const s4u_ConditionVariable* const_sg_cond_t;
+typedef s4u_Mailbox* sg_mailbox_t;
+typedef const s4u_Mailbox* const_sg_mailbox_t;
+typedef s4u_Mutex* sg_mutex_t;
+typedef const s4u_Mutex* const_sg_mutex_t;
+typedef s4u_Semaphore* sg_sem_t;
+typedef const s4u_Semaphore* const_sg_sem_t;
+typedef s4u_NetZone* sg_netzone_t;
+typedef const s4u_NetZone* const_sg_netzone_t;
+typedef s4u_Host* sg_host_t;
+typedef const s4u_Host* const_sg_host_t;
+typedef s4u_Link* sg_link_t;
+typedef const s4u_Link* const_sg_link_t;
+typedef s4u_Disk* sg_disk_t;
+typedef const s4u_Disk* const_sg_disk_t;
+typedef s4u_Storage* sg_storage_t;
+typedef const s4u_Storage* const_sg_storage_t;
+typedef s4u_File* sg_file_t;
+typedef const s4u_File* const_sg_file_t;
+typedef s4u_VM* sg_vm_t;
+typedef const s4u_VM* const_sg_vm_t;
+typedef s4u_Actor* sg_actor_t;
+typedef const s4u_Actor* const_sg_actor_t;
+
+typedef struct s_smx_simcall* smx_simcall_t;