From ac32902a87147f78d63c931aa8a23dee762660e7 Mon Sep 17 00:00:00 2001
From: Karthik Kumar Viswanathan <195178+guilt@users.noreply.github.com>
Date: Sun, 14 Jan 2024 00:41:44 -0800
Subject: llama : support WinXP build with MinGW 8.1.0 (#3419)

---
 llama.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'llama.cpp')

diff --git a/llama.cpp b/llama.cpp
index 107b0511..51e9bdae 100644
--- a/llama.cpp
+++ b/llama.cpp
@@ -987,6 +987,7 @@ struct llama_mmap {
         }
 
         if (prefetch > 0) {
+#if _WIN32_WINNT >= 0x602
             // PrefetchVirtualMemory is only present on Windows 8 and above, so we dynamically load it
             BOOL (WINAPI *pPrefetchVirtualMemory) (HANDLE, ULONG_PTR, PWIN32_MEMORY_RANGE_ENTRY, ULONG);
             HMODULE hKernel32 = GetModuleHandleW(L"kernel32.dll");
@@ -1004,6 +1005,9 @@ struct llama_mmap {
                             llama_format_win_err(GetLastError()).c_str());
                 }
             }
+#else
+            throw std::runtime_error("PrefetchVirtualMemory unavailable");
+#endif
         }
     }
 
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