msys2: fix build (#3818)

* cmake: fix mingw-w64 build

* time.cpp: fix build with Clang on Windows

* tls.h: include malloc.h for alloca

src/core/libraries/kernel/time.cpp

@@ -1,6 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+#include <ctime>
 #include <thread>
 
 #include "common/assert.h"
@@ -485,25 +486,41 @@ Common::NativeClock* GetClock() {
 s32 PS4_SYSV_ABI sceKernelConvertUtcToLocaltime(time_t time, time_t* local_time,
                                                 struct OrbisTimesec* st, u64* dst_sec) {
     LOG_TRACE(Kernel, "Called");
+#ifdef _WIN32
+    TIME_ZONE_INFORMATION tz{};
+    DWORD res = GetTimeZoneInformation(&tz);
+    *local_time = time - tz.Bias;
+
+    if (st != nullptr) {
+        st->t = time;
+        st->west_sec = -tz.Bias * 60;
+        st->dst_sec = res == TIME_ZONE_ID_DAYLIGHT ? -_dstbias : 0;
+    }
+
+    if (dst_sec != nullptr) {
+        *dst_sec = res == TIME_ZONE_ID_DAYLIGHT ? -_dstbias : 0;
+    }
+#else
 #ifdef __APPLE__
     // std::chrono::current_zone() not available yet.
     const auto* time_zone = date::current_zone();
 #else
     const auto* time_zone = std::chrono::current_zone();
-#endif
+#endif // __APPLE__
     auto info = time_zone->get_info(std::chrono::system_clock::now());
 
     *local_time = info.offset.count() + info.save.count() * 60 + time;
 
     if (st != nullptr) {
         st->t = time;
-        st->west_sec = info.offset.count() * 60;
+        st->west_sec = info.offset.count();
         st->dst_sec = info.save.count() * 60;
     }
 
     if (dst_sec != nullptr) {
         *dst_sec = info.save.count() * 60;
     }
+#endif // _WIN32
 
     return ORBIS_OK;
 }
@@ -565,4 +582,4 @@ void RegisterTime(Core::Loader::SymbolsResolver* sym) {
     LIB_FUNCTION("-o5uEDpN+oY", "libkernel", 1, "libkernel", sceKernelConvertUtcToLocaltime);
 }
 
-} // namespace Libraries::Kernel
+} // namespace Libraries::Kernel

src/core/tls.h

@@ -5,6 +5,9 @@
 
 #include <cstring>
 #include "common/types.h"
+#ifdef _WIN32
+#include <malloc.h>
+#endif
 
 namespace Xbyak {
 class CodeGenerator;