Stub missing functions for 3DS

CMakeLists.txt

@@ -493,7 +493,10 @@ if(NINTENDO_3DS)
     Source/platform/ctr/display.cpp
     Source/platform/ctr/messagebox.cpp
     Source/platform/ctr/random.cpp
-    Source/platform/ctr/sockets.cpp)
+    Source/platform/ctr/sockets.cpp
+    Source/platform/ctr/asio/net/if.c
+    Source/platform/ctr/asio/sys/socket.c
+    Source/platform/ctr/asio/sys/uio.c)
   set(BIN_TARGET ${BIN_TARGET}.elf)
 endif()
 

Source/platform/ctr/asio/net/if.c

@@ -0,0 +1,22 @@
+#include <stddef.h>
+#include <errno.h>
+#include <net/if.h>
+
+unsigned int if_nametoindex(const char *__ifname)
+{
+	return ENOTSUP;
+}
+
+char *if_indextoname(unsigned int __ifindex, char *__ifname)
+{
+	return NULL;
+}
+
+struct if_nameindex *if_nameindex()
+{
+	return NULL;
+}
+
+void if_freenameindex(struct if_nameindex *__ptr)
+{
+}

Source/platform/ctr/asio/sys/socket.c

@@ -0,0 +1,18 @@
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <errno.h>
+
+ssize_t recvmsg(int socket, struct msghdr *message, int flags)
+{
+	return ENOTSUP;
+}
+
+ssize_t sendmsg(int socket, const struct msghdr *message, int flags)
+{
+	return ENOTSUP;
+}
+
+int socketpair(int domain, int type, int protocol, int socket_vector[2])
+{
+	return ENOTSUP;
+}

Source/platform/ctr/asio/sys/uio.c

@@ -0,0 +1,13 @@
+#include <sys/uio.h>
+#include <sys/types.h>
+#include <errno.h>
+
+ssize_t readv(int __fd, const struct iovec *__iovec, int __count)
+{
+	return ENOTSUP;
+}
+
+ssize_t writev(int __fd, const struct iovec *__iovec, int __count)
+{
+	return ENOTSUP;
+}