diff --git a/components/dfs/filesystems/lwip/SConscript b/components/dfs/filesystems/net/SConscript
similarity index 82%
rename from components/dfs/filesystems/lwip/SConscript
rename to components/dfs/filesystems/net/SConscript
index 7bc160af847b5c0865bad617639845d47be463b5..810ca16fef4ac30f2012aaa5d4de5d73c7efba59 100644
--- a/components/dfs/filesystems/lwip/SConscript
+++ b/components/dfs/filesystems/net/SConscript
@@ -6,6 +6,6 @@ cwd = GetCurrentDir()
 src = Glob('*.c')
 CPPPATH = [cwd]
 
-group = DefineGroup('Filesystem', src, depend = ['RT_USING_DFS', 'RT_USING_DFS_LWIP'], CPPPATH = CPPPATH)
+group = DefineGroup('Filesystem', src, depend = ['RT_USING_DFS', 'RT_USING_DFS_NET'], CPPPATH = CPPPATH)
 
 Return('group')
diff --git a/components/dfs/filesystems/lwip/arpa/inet.h b/components/dfs/filesystems/net/arpa/inet.h
similarity index 100%
rename from components/dfs/filesystems/lwip/arpa/inet.h
rename to components/dfs/filesystems/net/arpa/inet.h
diff --git a/components/dfs/filesystems/lwip/dfs_lwip.c b/components/dfs/filesystems/net/dfs_net.c
similarity index 73%
rename from components/dfs/filesystems/lwip/dfs_lwip.c
rename to components/dfs/filesystems/net/dfs_net.c
index 86494c9d692d496dbf063ec9861e9ff921ff945f..cda8407f1789b15050085636fe0088620a8e6313 100644
--- a/components/dfs/filesystems/lwip/dfs_lwip.c
+++ b/components/dfs/filesystems/net/dfs_net.c
@@ -1,7 +1,7 @@
 /*
- * File      : dfs_lwip.c
+ * File      : dfs_net.c
  * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2015, RT-Thread Development Team
+ * COPYRIGHT (C) 2015-2016, RT-Thread Development Team
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -20,15 +20,16 @@
  * Change Logs:
  * Date           Author       Notes
  * 2015-02-17     Bernard      First version
+ * 2016-05-07     Bernard      Rename dfs_lwip to dfs_net
  */
 
 #include <rtthread.h>
 #include <dfs.h>
 #include <dfs_fs.h>
 
-#include "dfs_lwip.h"
+#include "dfs_net.h"
 
-int dfs_lwip_getsocket(int fd)
+int dfs_net_getsocket(int fd)
 {
     struct dfs_fd *_dfs_fd; 
     
@@ -40,12 +41,12 @@ int dfs_lwip_getsocket(int fd)
     return (int)_dfs_fd->data;
 }
 
-int dfs_lwip_ioctl(struct dfs_fd* file, int cmd, void* args)
+int dfs_net_ioctl(struct dfs_fd* file, int cmd, void* args)
 {
     return -DFS_STATUS_EIO;
 }
 
-int dfs_lwip_read(struct dfs_fd* file, void *buf, rt_size_t count)
+int dfs_net_read(struct dfs_fd* file, void *buf, rt_size_t count)
 {
     int sock;
 
@@ -55,7 +56,7 @@ int dfs_lwip_read(struct dfs_fd* file, void *buf, rt_size_t count)
     return count;
 }
 
-int dfs_lwip_write(struct dfs_fd *file, const void *buf, rt_size_t count)
+int dfs_net_write(struct dfs_fd *file, const void *buf, rt_size_t count)
 {
     int sock;
     
@@ -65,7 +66,7 @@ int dfs_lwip_write(struct dfs_fd *file, const void *buf, rt_size_t count)
     return count;
 }
 
-int dfs_lwip_close(struct dfs_fd* file)
+int dfs_net_close(struct dfs_fd* file)
 {
     int sock;
     int result;
@@ -78,9 +79,9 @@ int dfs_lwip_close(struct dfs_fd* file)
     return -result;
 }
 
-static const struct dfs_filesystem_operation _lwip_fs_ops = 
+static const struct dfs_filesystem_operation _net_fs_ops = 
 {
-    "lwip",
+    "net",
     DFS_FS_FLAG_DEFAULT,
     RT_NULL,    /* mount    */
     RT_NULL,    /* unmont   */
@@ -88,10 +89,10 @@ static const struct dfs_filesystem_operation _lwip_fs_ops =
     RT_NULL,    /* statfs   */
 
     RT_NULL,    /* open     */
-    dfs_lwip_close,
-    dfs_lwip_ioctl,
-    dfs_lwip_read,
-    dfs_lwip_write,
+    dfs_net_close,
+    dfs_net_ioctl,
+    dfs_net_read,
+    dfs_net_write,
     RT_NULL,
     RT_NULL,    /* lseek    */
     RT_NULL,    /* getdents */
@@ -100,28 +101,28 @@ static const struct dfs_filesystem_operation _lwip_fs_ops =
     RT_NULL,    /* rename   */
 };
 
-static struct dfs_filesystem _lwip_fs = 
+static struct dfs_filesystem _net_fs = 
 {
     0,              /* dev_id */
     RT_NULL,        /* path */
-    &_lwip_fs_ops,
+    &_net_fs_ops,
     RT_NULL         /* data */
 };
 
-struct dfs_filesystem* dfs_lwip_get_fs(void)
+struct dfs_filesystem* dfs_net_get_fs(void)
 {
-    return &_lwip_fs;
+    return &_net_fs;
 }
 
 /*
 NOTE: Beause we don't need to mount lwIP file system, the filesystem_ops is not 
 registered to the system. 
 
-int dfs_lwip_system_init(void)
+int dfs_net_system_init(void)
 {
-    dfs_register(&_lwip_fs_ops);
+    dfs_register(&_net_fs_ops);
     
     return 0;
 }
-INIT_FS_EXPORT(dfs_lwip_system_init);
+INIT_FS_EXPORT(dfs_net_system_init);
 */
diff --git a/components/dfs/filesystems/lwip/dfs_lwip.h b/components/dfs/filesystems/net/dfs_net.h
similarity index 77%
rename from components/dfs/filesystems/lwip/dfs_lwip.h
rename to components/dfs/filesystems/net/dfs_net.h
index 0c100f9d341e0aa914cbf8bf955d772b6e75430c..d98b719b89d81d443b2a33fbb4b435d5fdc72790 100644
--- a/components/dfs/filesystems/lwip/dfs_lwip.h
+++ b/components/dfs/filesystems/net/dfs_net.h
@@ -1,7 +1,7 @@
 /*
- * File      : dfs_lwip.h
+ * File      : dfs_net.h
  * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2015, RT-Thread Development Team
+ * COPYRIGHT (C) 2015-2016, RT-Thread Development Team
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -20,10 +20,11 @@
  * Change Logs:
  * Date           Author       Notes
  * 2015-02-17     Bernard      First version
+ * 2016-05-05     Bernard      rename dfs_lwip to dfs_net.
  */
 
-#ifndef DFS_LWIP_H__
-#define DFS_LWIP_H__
+#ifndef DFS_NET_H__
+#define DFS_NET_H__
 
 #ifdef __cplusplus
 extern "C" {
@@ -31,10 +32,10 @@ extern "C" {
 
 #include <lwip/sockets.h>
 
-struct dfs_filesystem* dfs_lwip_get_fs(void);
-int dfs_lwip_getsocket(int fd);
+struct dfs_filesystem* dfs_net_get_fs(void);
+int dfs_net_getsocket(int fd);
 
-int dfs_lwip_system_init(void);
+int dfs_net_system_init(void);
 
 #ifdef __cplusplus
 }
diff --git a/components/dfs/filesystems/lwip/lwip_netdb.c b/components/dfs/filesystems/net/net_netdb.c
similarity index 100%
rename from components/dfs/filesystems/lwip/lwip_netdb.c
rename to components/dfs/filesystems/net/net_netdb.c
diff --git a/components/dfs/filesystems/lwip/lwip_select.c b/components/dfs/filesystems/net/net_select.c
similarity index 98%
rename from components/dfs/filesystems/lwip/lwip_select.c
rename to components/dfs/filesystems/net/net_select.c
index 31d9190cfceb265a8d723c7017ed6f95fc15679d..d19ff0ed1bc88d101c0611257f90367bc92ac8fb 100644
--- a/components/dfs/filesystems/lwip/lwip_select.c
+++ b/components/dfs/filesystems/net/net_select.c
@@ -27,7 +27,7 @@
 
 #ifdef RT_USING_LWIP
 
-#include "dfs_lwip.h"
+#include "dfs_net.h"
 
 int
 select(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptset,
@@ -48,7 +48,7 @@ select(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptset,
     for (index = 0; index < maxfdp1; index ++)
     {
         /* convert fd to sock */
-        sock = dfs_lwip_getsocket(index);
+        sock = dfs_net_getsocket(index);
         if (sock == -1) continue;
 
         if (sock > maxfd) maxfd = sock;
diff --git a/components/dfs/filesystems/lwip/lwip_sockets.c b/components/dfs/filesystems/net/net_sockets.c
similarity index 89%
rename from components/dfs/filesystems/lwip/lwip_sockets.c
rename to components/dfs/filesystems/net/net_sockets.c
index 6b68378f7d82ac992102b284d509b471ea3ecc9e..2a5a385ecef342529e0888782a1b35cac092c9f0 100644
--- a/components/dfs/filesystems/lwip/lwip_sockets.c
+++ b/components/dfs/filesystems/net/net_sockets.c
@@ -28,12 +28,12 @@
 
 #include <sys/socket.h>
 
-#include "dfs_lwip.h"
+#include "dfs_net.h"
 
 int accept(int s, struct sockaddr *addr, socklen_t *addrlen)
 {
     int new_client = -1;
-    int sock = dfs_lwip_getsocket(s);
+    int sock = dfs_net_getsocket(s);
 
     new_client = lwip_accept(sock, addr, addrlen);
     if (new_client != -1)
@@ -58,7 +58,7 @@ int accept(int s, struct sockaddr *addr, socklen_t *addrlen)
         d->type = FT_SOCKET;
         d->path = RT_NULL;
 
-        d->fs = dfs_lwip_get_fs();
+        d->fs = dfs_net_get_fs();
 
         d->flags = DFS_O_RDWR; /* set flags as read and write */
         d->size = 0;
@@ -79,7 +79,7 @@ RTM_EXPORT(accept);
 
 int bind(int s, const struct sockaddr *name, socklen_t namelen)
 {
-    int sock = dfs_lwip_getsocket(s);
+    int sock = dfs_net_getsocket(s);
 
     return lwip_bind(sock, name, namelen);
 }
@@ -98,7 +98,7 @@ int shutdown(int s, int how)
         return -1;
     }
 
-    sock = dfs_lwip_getsocket(s);
+    sock = dfs_net_getsocket(s);
     if (lwip_shutdown(sock, how) == 0)
     {
         /* socket has been closed, delete it from file system fd */
@@ -114,7 +114,7 @@ RTM_EXPORT(shutdown);
 
 int getpeername(int s, struct sockaddr *name, socklen_t *namelen)
 {
-    int sock = dfs_lwip_getsocket(s);
+    int sock = dfs_net_getsocket(s);
 
     return lwip_getpeername(sock, name, namelen);
 }
@@ -122,7 +122,7 @@ RTM_EXPORT(getpeername);
 
 int getsockname(int s, struct sockaddr *name, socklen_t *namelen)
 {
-    int sock = dfs_lwip_getsocket(s);
+    int sock = dfs_net_getsocket(s);
 
     return lwip_getsockname(sock, name, namelen);
 }
@@ -130,7 +130,7 @@ RTM_EXPORT(getsockname);
 
 int getsockopt(int s, int level, int optname, void *optval, socklen_t *optlen)
 {
-    int sock = dfs_lwip_getsocket(s);
+    int sock = dfs_net_getsocket(s);
 
     return lwip_getsockopt(sock, level, optname, optval, optlen);
 }
@@ -138,7 +138,7 @@ RTM_EXPORT(getsockopt);
 
 int setsockopt(int s, int level, int optname, const void *optval, socklen_t optlen)
 {
-    int sock = dfs_lwip_getsocket(s);
+    int sock = dfs_net_getsocket(s);
 
     return lwip_setsockopt(sock, level, optname, optval, optlen);
 }
@@ -146,7 +146,7 @@ RTM_EXPORT(setsockopt);
 
 int connect(int s, const struct sockaddr *name, socklen_t namelen)
 {
-    int sock = dfs_lwip_getsocket(s);
+    int sock = dfs_net_getsocket(s);
 
     return lwip_connect(sock, name, namelen);
 }
@@ -154,7 +154,7 @@ RTM_EXPORT(connect);
 
 int listen(int s, int backlog)
 {
-    int sock = dfs_lwip_getsocket(s);
+    int sock = dfs_net_getsocket(s);
 
     return lwip_listen(sock, backlog);
 }
@@ -162,7 +162,7 @@ RTM_EXPORT(listen);
 
 int recv(int s, void *mem, size_t len, int flags)
 {
-    int sock = dfs_lwip_getsocket(s);
+    int sock = dfs_net_getsocket(s);
 
     return lwip_recv(sock, mem, len, flags);
 }
@@ -171,7 +171,7 @@ RTM_EXPORT(recv);
 int recvfrom(int s, void *mem, size_t len, int flags,
              struct sockaddr *from, socklen_t *fromlen)
 {
-    int sock = dfs_lwip_getsocket(s);
+    int sock = dfs_net_getsocket(s);
 
     return lwip_recvfrom(sock, mem, len, flags, from, fromlen);
 }
@@ -179,7 +179,7 @@ RTM_EXPORT(recvfrom);
 
 int send(int s, const void *dataptr, size_t size, int flags)
 {
-    int sock = dfs_lwip_getsocket(s);
+    int sock = dfs_net_getsocket(s);
 
     return lwip_send(sock, dataptr, size, flags);
 }
@@ -188,7 +188,7 @@ RTM_EXPORT(send);
 int sendto(int s, const void *dataptr, size_t size, int flags,
            const struct sockaddr *to, socklen_t tolen)
 {
-    int sock = dfs_lwip_getsocket(s);
+    int sock = dfs_net_getsocket(s);
 
     return lwip_sendto(sock, dataptr, size, flags, to, tolen);
 }
diff --git a/components/dfs/filesystems/lwip/netdb.h b/components/dfs/filesystems/net/netdb.h
similarity index 100%
rename from components/dfs/filesystems/lwip/netdb.h
rename to components/dfs/filesystems/net/netdb.h
diff --git a/components/dfs/filesystems/lwip/netinet/in.h b/components/dfs/filesystems/net/netinet/in.h
similarity index 100%
rename from components/dfs/filesystems/lwip/netinet/in.h
rename to components/dfs/filesystems/net/netinet/in.h
diff --git a/components/dfs/filesystems/lwip/netinet/tcp.h b/components/dfs/filesystems/net/netinet/tcp.h
similarity index 100%
rename from components/dfs/filesystems/lwip/netinet/tcp.h
rename to components/dfs/filesystems/net/netinet/tcp.h
diff --git a/components/dfs/filesystems/lwip/netinet/udp.h b/components/dfs/filesystems/net/netinet/udp.h
similarity index 100%
rename from components/dfs/filesystems/lwip/netinet/udp.h
rename to components/dfs/filesystems/net/netinet/udp.h
diff --git a/components/dfs/filesystems/lwip/sys/select.h b/components/dfs/filesystems/net/sys/select.h
similarity index 100%
rename from components/dfs/filesystems/lwip/sys/select.h
rename to components/dfs/filesystems/net/sys/select.h
diff --git a/components/dfs/filesystems/lwip/sys/socket.h b/components/dfs/filesystems/net/sys/socket.h
similarity index 100%
rename from components/dfs/filesystems/lwip/sys/socket.h
rename to components/dfs/filesystems/net/sys/socket.h
diff --git a/components/libc/SConscript b/components/libc/SConscript
index 4ed1dde123372ce0cdcfae0103ecfb854f82d9b0..a7913ed7445b09a7984a745324031af515d544b3 100644
--- a/components/libc/SConscript
+++ b/components/libc/SConscript
@@ -17,4 +17,7 @@ else:
     if rtconfig.PLATFORM == 'gcc' and rtconfig.ARCH != 'sim':
         objs = objs + SConscript('minilibc/SConscript')
 
+objs = objs + SConscript('pthreads/SConscript')
+objs = objs + SConscript('libdl/SConscript')
+
 Return('objs')
diff --git a/components/libdl/SConscript b/components/libc/libdl/SConscript
similarity index 66%
rename from components/libdl/SConscript
rename to components/libc/libdl/SConscript
index 4b16063eb3dfa90bdad97fde2db85c6cf8648667..f7f588858a44567f1536a1ec18820cd79ccb2a13 100644
--- a/components/libdl/SConscript
+++ b/components/libc/libdl/SConscript
@@ -1,9 +1,9 @@
-Import('RTT_ROOT')
-Import('rtconfig')
 from building import *
 
 src	= Glob('*.c')
-CPPPATH = [RTT_ROOT + '/components/libdl']
+cwd = GetCurrentDir()
+CPPPATH = [cwd]
+
 group = DefineGroup('libdl', src, depend = ['RT_USING_MODULE', 'RT_USING_LIBDL'], CPPPATH = CPPPATH)
 
 Return('group')
diff --git a/components/libdl/dlclose.c b/components/libc/libdl/dlclose.c
similarity index 100%
rename from components/libdl/dlclose.c
rename to components/libc/libdl/dlclose.c
diff --git a/components/libdl/dlerror.c b/components/libc/libdl/dlerror.c
similarity index 100%
rename from components/libdl/dlerror.c
rename to components/libc/libdl/dlerror.c
diff --git a/components/libdl/dlfcn.h b/components/libc/libdl/dlfcn.h
similarity index 100%
rename from components/libdl/dlfcn.h
rename to components/libc/libdl/dlfcn.h
diff --git a/components/libdl/dlopen.c b/components/libc/libdl/dlopen.c
similarity index 100%
rename from components/libdl/dlopen.c
rename to components/libc/libdl/dlopen.c
diff --git a/components/libdl/dlsym.c b/components/libc/libdl/dlsym.c
similarity index 100%
rename from components/libdl/dlsym.c
rename to components/libc/libdl/dlsym.c
diff --git a/components/libc/newlib/syscalls.c b/components/libc/newlib/syscalls.c
index b5d4ec5bf626f0e415e560d083507c568535bf00..55c19ccee93994425aba9f36021c1ca6d6da6df5 100644
--- a/components/libc/newlib/syscalls.c
+++ b/components/libc/newlib/syscalls.c
@@ -450,5 +450,15 @@ void __libc_init_array(void)
 
 void abort(void)
 {
-	return ;
+    if (rt_thread_self())
+    {
+        rt_thread_t self = rt_thread_self();
+
+        rt_kprintf("thread:%-8.*s abort!\n", RT_NAME_MAX, self->name);
+        rt_thread_suspend(self);
+
+        rt_schedule();
+    }
+
+	while (1);
 }
diff --git a/components/pthreads/SConscript b/components/libc/pthreads/SConscript
similarity index 71%
rename from components/pthreads/SConscript
rename to components/libc/pthreads/SConscript
index f220fb1992c6ba93affeac247c23d3e973d8601d..9023e12c13cb5c84b8fc2113d4e1a5d926102a1b 100644
--- a/components/pthreads/SConscript
+++ b/components/libc/pthreads/SConscript
@@ -1,8 +1,9 @@
-Import('RTT_ROOT')
 from building import *
 
+cwd = GetCurrentDir()
 src	= Glob('*.c')
-CPPPATH = [RTT_ROOT + '/components/pthreads']
+CPPPATH = [cwd]
+
 group = DefineGroup('pthreads', src, depend = ['RT_USING_PTHREADS', 'RT_USING_LIBC'], CPPPATH = CPPPATH)
 
 Return('group')
diff --git a/components/pthreads/clock_time.c b/components/libc/pthreads/clock_time.c
similarity index 100%
rename from components/pthreads/clock_time.c
rename to components/libc/pthreads/clock_time.c
diff --git a/components/pthreads/mqueue.c b/components/libc/pthreads/mqueue.c
similarity index 100%
rename from components/pthreads/mqueue.c
rename to components/libc/pthreads/mqueue.c
diff --git a/components/pthreads/mqueue.h b/components/libc/pthreads/mqueue.h
similarity index 100%
rename from components/pthreads/mqueue.h
rename to components/libc/pthreads/mqueue.h
diff --git a/components/pthreads/posix_types.h b/components/libc/pthreads/posix_types.h
similarity index 100%
rename from components/pthreads/posix_types.h
rename to components/libc/pthreads/posix_types.h
diff --git a/components/pthreads/pthread.c b/components/libc/pthreads/pthread.c
similarity index 100%
rename from components/pthreads/pthread.c
rename to components/libc/pthreads/pthread.c
diff --git a/components/pthreads/pthread.h b/components/libc/pthreads/pthread.h
similarity index 100%
rename from components/pthreads/pthread.h
rename to components/libc/pthreads/pthread.h
diff --git a/components/pthreads/pthread_attr.c b/components/libc/pthreads/pthread_attr.c
similarity index 100%
rename from components/pthreads/pthread_attr.c
rename to components/libc/pthreads/pthread_attr.c
diff --git a/components/pthreads/pthread_barrier.c b/components/libc/pthreads/pthread_barrier.c
similarity index 100%
rename from components/pthreads/pthread_barrier.c
rename to components/libc/pthreads/pthread_barrier.c
diff --git a/components/pthreads/pthread_cond.c b/components/libc/pthreads/pthread_cond.c
similarity index 100%
rename from components/pthreads/pthread_cond.c
rename to components/libc/pthreads/pthread_cond.c
diff --git a/components/pthreads/pthread_internal.h b/components/libc/pthreads/pthread_internal.h
similarity index 100%
rename from components/pthreads/pthread_internal.h
rename to components/libc/pthreads/pthread_internal.h
diff --git a/components/pthreads/pthread_mutex.c b/components/libc/pthreads/pthread_mutex.c
similarity index 100%
rename from components/pthreads/pthread_mutex.c
rename to components/libc/pthreads/pthread_mutex.c
diff --git a/components/pthreads/pthread_rwlock.c b/components/libc/pthreads/pthread_rwlock.c
similarity index 100%
rename from components/pthreads/pthread_rwlock.c
rename to components/libc/pthreads/pthread_rwlock.c
diff --git a/components/pthreads/pthread_spin.c b/components/libc/pthreads/pthread_spin.c
similarity index 100%
rename from components/pthreads/pthread_spin.c
rename to components/libc/pthreads/pthread_spin.c
diff --git a/components/pthreads/pthread_tls.c b/components/libc/pthreads/pthread_tls.c
similarity index 100%
rename from components/pthreads/pthread_tls.c
rename to components/libc/pthreads/pthread_tls.c
diff --git a/components/pthreads/sched.c b/components/libc/pthreads/sched.c
similarity index 100%
rename from components/pthreads/sched.c
rename to components/libc/pthreads/sched.c
diff --git a/components/pthreads/sched.h b/components/libc/pthreads/sched.h
similarity index 100%
rename from components/pthreads/sched.h
rename to components/libc/pthreads/sched.h
diff --git a/components/pthreads/semaphore.c b/components/libc/pthreads/semaphore.c
similarity index 100%
rename from components/pthreads/semaphore.c
rename to components/libc/pthreads/semaphore.c
diff --git a/components/pthreads/semaphore.h b/components/libc/pthreads/semaphore.h
similarity index 100%
rename from components/pthreads/semaphore.h
rename to components/libc/pthreads/semaphore.h
diff --git a/components/net/lwip-1.4.1/src/arch/include/arch/cc.h b/components/net/lwip-1.4.1/src/arch/include/arch/cc.h
index a4dc1732f8351f5b1774f1e4b6a92aed95c43adf..02b2f43907d58252e4431cd56d2112a8f6629add 100644
--- a/components/net/lwip-1.4.1/src/arch/include/arch/cc.h
+++ b/components/net/lwip-1.4.1/src/arch/include/arch/cc.h
@@ -76,7 +76,7 @@ typedef rt_uint32_t	mem_ptr_t;
 #define LWIP_TIMEVAL_PRIVATE	   1
 #endif
 
-#if defined(RT_USING_DFS_LWIP)
+#if defined(RT_USING_DFS_NET)
 #define LWIP_COMPAT_SOCKETS        0
 #endif