remove libc_errno.h & libc_limits.h

components/net/lwip-1.4.1/src/arch/include/arch/cc.h

@@ -105,7 +105,7 @@ void sys_arch_assert(const char* file, int line);
 #define LWIP_PLATFORM_DIAG(x)   do {rt_kprintf x;} while(0)
 #define LWIP_PLATFORM_ASSERT(x) do {rt_kprintf(x); sys_arch_assert(__FILE__, __LINE__);}while(0)
 
-#include "string.h"
+#include <string.h>
 
 #define SYS_ARCH_DECL_PROTECT(level)
 #define SYS_ARCH_PROTECT(level)     rt_enter_critical()

components/net/lwip-2.0.2/src/arch/include/arch/cc.h

@@ -84,7 +84,7 @@ void sys_arch_assert(const char* file, int line);
 #define LWIP_PLATFORM_DIAG(x)   do {rt_kprintf x;} while(0)
 #define LWIP_PLATFORM_ASSERT(x) do {rt_kprintf(x); sys_arch_assert(__FILE__, __LINE__);}while(0)
 
-#include "string.h"
+#include <string.h>
 
 #define SYS_ARCH_DECL_PROTECT(level)
 #define SYS_ARCH_PROTECT(level)     rt_enter_critical()

components/net/lwip-2.0.2/src/lwipopts.h

@@ -5,6 +5,8 @@
 
 #define ERRNO                       1
 
+#define LWIP_ERRNO_STDINCLUDE
+
 #define LWIP_IPV4                   1
 
 #ifdef RT_USING_LWIP_IPV6

components/net/lwip-2.1.2/src/arch/include/arch/cc.h

@@ -46,7 +46,7 @@
 #define X32_F "lx"
 
 #ifdef RT_USING_LIBC
-#include <errno.h>
+#include <sys/errno.h>
 #ifndef ENSRNOTFOUND
 #define ENSRNOTFOUND 163  /* Domain name not found */
 #endif

components/net/lwip-2.1.2/src/include/lwip/errno.h

@@ -181,7 +181,7 @@ extern int errno;
 
 /* Define LWIP_ERRNO_STDINCLUDE if you want to include <errno.h> here */
 #ifdef LWIP_ERRNO_STDINCLUDE
-#include <errno.h>
+#include <sys/errno.h>
 #else /* LWIP_ERRNO_STDINCLUDE */
 /* Define LWIP_ERRNO_INCLUDE to an equivalent of <errno.h> to include the error defines here */
 #ifdef LWIP_ERRNO_INCLUDE

components/net/lwip-2.1.2/src/lwipopts.h

@@ -5,6 +5,7 @@
 
 #define ERRNO                       1
 
+#define LWIP_ERRNO_STDINCLUDE
 #define LWIP_SOCKET_SELECT 1
 #define LWIP_SOCKET_POLL 1
 

components/net/sal_socket/socket/net_sockets.c

@@ -13,7 +13,7 @@
 #include <dfs_file.h>
 #include <dfs_poll.h>
 #include <dfs_net.h>
-
+#include <sys/errno.h>
 #include <sys/socket.h>
 
 int accept(int s, struct sockaddr *addr, socklen_t *addrlen)