Add BEAMMP_{WINDOWS,LINUX,APPLE} preprocessor defines instead of platform specific ones

include/Client.h

@@ -13,10 +13,10 @@
 
 class TServer;
 
-#ifdef WIN32
+#ifdef BEAMMP_WINDOWS
 // for socklen_t
 #include <WS2tcpip.h>
-#endif // WIN32
+#endif // WINDOWS
 
 struct TConnection final {
     SOCKET Socket;

include/Compat.h

@@ -1,8 +1,10 @@
 #pragma once
 
+#include "Environment.h"
+
 // ======================= UNIX ========================
 
-#ifdef __unix
+#ifdef BEAMMP_LINUX
 #include <arpa/inet.h>
 #include <sys/socket.h>
 #include <termios.h>
@@ -19,7 +21,9 @@ inline void CloseSocketProper(int TheSocket) {
 }
 #endif // unix
 
-#ifdef __APPLE__
+// ======================= APPLE ========================
+
+#ifdef BEAMMP_APPLE
 #include <arpa/inet.h>
 #include <sys/socket.h>
 #include <termios.h>
@@ -36,9 +40,9 @@ inline void CloseSocketProper(int TheSocket) {
 }
 #endif // unix
 
-// ======================= WIN32 =======================
+// ======================= WINDOWS =======================
 
-#ifdef WIN32
+#ifdef BEAMMP_WINDOWS
 #include <conio.h>
 #include <winsock2.h>
 inline void CloseSocketProper(SOCKET TheSocket) {
@@ -47,9 +51,3 @@ inline void CloseSocketProper(SOCKET TheSocket) {
 
 }
 #endif // WIN32
-
-// ======================= OTHER =======================
-
-#if !defined(WIN32) && !defined(__unix) && !defined(__APPLE__)
-#error "OS not supported"
-#endif

include/Environment.h

@@ -0,0 +1,17 @@
+#pragma once
+
+// one of BEAMMP_{WINDOWS,LINUX,APPLE} will be set at the end of this
+
+// clang-format off
+#if !defined(BEAMMP_WINDOWS) && !defined(BEAMMP_UNIX) && !defined(BEAMMP_APPLE)
+    #if defined(_WIN32) || defined(__CYGWIN__)
+        #define BEAMMP_WINDOWS
+    #elif defined(__linux__) || defined(__linux) || defined(linux) || defined(__unix__) || defined(__unix) || defined(unix)
+        #define BEAMMP_LINUX
+    #elif defined(__APPLE__) || defined(__MACH__)
+        #define BEAMMP_APPLE
+    #else
+        #error "This platform is not known. Please define one of the above for your OS."
+    #endif
+#endif
+// clang-format on