From 65a74f21cb48cc0fa15c0b2806418c30e8e27d2e Mon Sep 17 00:00:00 2001
From: Matthew Sterrett <matthew.sterrett@intel.com>
Date: Mon, 3 Mar 2025 10:28:30 -0800
Subject: [PATCH] Only check clang version if defined

---
 lib/x86simdsort.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/x86simdsort.cpp b/lib/x86simdsort.cpp
index 61bfe53..a5c8d62 100644
--- a/lib/x86simdsort.cpp
+++ b/lib/x86simdsort.cpp
@@ -11,7 +11,7 @@ static int check_cpu_feature_support(std::string_view cpufeature)
 
     if ((cpufeature == "avx512_spr") && (!disable_avx512))
 #if defined(__FLT16_MAX__) && !defined(__INTEL_LLVM_COMPILER) \
-        && __clang_major__ >= 18
+        && (!defined(__clang_major__) || __clang_major__ >= 18)
         return __builtin_cpu_supports("avx512f")
                 && __builtin_cpu_supports("avx512fp16")
                 && __builtin_cpu_supports("avx512vbmi2");