Add NXDK (Xbox) support

src/Platform.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#ifdef _WIN32
+#if defined(_WIN32) && !defined(NXDK)
 // Prevent bogus definitions of error codes
 // that are incompatible with Winsock errors.
 #define _CRT_NO_POSIX_ERROR_CODES
@@ -13,11 +13,23 @@
 #include <string.h>
 #include <stdint.h>
 
-#ifdef _WIN32
+#if defined(_WIN32) && !defined(NXDK)
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #include <winsock2.h>
 #include <ws2tcpip.h>
+#elif defined(NXDK)
+// nxdk exposes Win32-style threading primitives, but its network stack is
+// lwIP with POSIX/BSD socket compatibility headers. Pull in the socket-facing
+// headers from the POSIX side so moonlight-common-c uses the Unix backend.
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <sys/ioctl.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <fcntl.h>
 #elif defined(__APPLE__)
 #include <mach/mach_time.h>
 #include <unistd.h>
@@ -64,15 +76,19 @@
 #endif
 
 #ifdef LC_WINDOWS
+# if !defined(NXDK)
 // Windows doesn't have strtok_r() but it has the same
 // function named strtok_s().
 #define strtok_r strtok_s
+# endif
 
-# if defined(WINAPI_FAMILY) && WINAPI_FAMILY==WINAPI_FAMILY_APP
-# define LC_UWP
-# else
-# define LC_WINDOWS_DESKTOP
-#endif
+# if !defined(NXDK)
+#  if defined(WINAPI_FAMILY) && WINAPI_FAMILY==WINAPI_FAMILY_APP
+#   define LC_UWP
+#  else
+#   define LC_WINDOWS_DESKTOP
+#  endif
+# endif
 
 #endif
 
@@ -83,7 +99,7 @@
     if (ListenerCallbacks.logMessage) \
         ListenerCallbacks.logMessage(s, ##__VA_ARGS__)
 
-#if defined(LC_WINDOWS)
+#if defined(LC_WINDOWS) && !defined(__clang__)
 #include <crtdbg.h>
 #ifdef LC_DEBUG
 #define LC_ASSERT(x) __analysis_assume(x); \
@@ -116,21 +132,22 @@
 #define LC_ASSERT_VT(x) LC_ASSERT(x)
 #endif
 
-#ifdef _MSC_VER
+#if defined(__has_builtin) && __has_builtin(__builtin_bswap16)
+#define LC_HAS_BUILTIN_BSWAP
+#endif
+
+#if defined(LC_HAS_BUILTIN_BSWAP) || \
+        (defined(__GNUC__) && ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)))
+#define BSWAP16(x) __builtin_bswap16(x)
+#define BSWAP32(x) __builtin_bswap32(x)
+#define BSWAP64(x) __builtin_bswap64(x)
+#elif defined(_MSC_VER)
 #pragma intrinsic(_byteswap_ushort)
 #define BSWAP16(x) _byteswap_ushort(x)
 #pragma intrinsic(_byteswap_ulong)
 #define BSWAP32(x) _byteswap_ulong(x)
 #pragma intrinsic(_byteswap_uint64)
 #define BSWAP64(x) _byteswap_uint64(x)
-#elif (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
-#define BSWAP16(x) __builtin_bswap16(x)
-#define BSWAP32(x) __builtin_bswap32(x)
-#define BSWAP64(x) __builtin_bswap64(x)
-#elif defined(__has_builtin) && __has_builtin(__builtin_bswap16)
-#define BSWAP16(x) __builtin_bswap16(x)
-#define BSWAP32(x) __builtin_bswap32(x)
-#define BSWAP64(x) __builtin_bswap64(x)
 #else
 #error Please define your platform byteswap macros!
 #endif