Deal with very old linux kernels

[stockfish] / src / misc.cpp

diff --git a/src/misc.cpp b/src/misc.cpp
index 459ea10035b6ae9e6a4de47e01a60f2dec596865..56a3dcad42d888fb7afeccc808f69432fbccf1c6 100644 (file)
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -367,7 +367,9 @@ void* aligned_ttmem_alloc(size_t allocSize, void*& mem) {
   size_t size = ((allocSize + alignment - 1) / alignment) * alignment; // multiple of alignment
   if (posix_memalign(&mem, alignment, size))
      mem = nullptr;
+#if defined(MADV_HUGEPAGE)
   madvise(mem, allocSize, MADV_HUGEPAGE);
+#endif
   return mem;
 }