Update conditional for atomics to HAVE_C11
@@ -1095,7 +1095,7 @@ static BLASULONG base_address = 0UL;
static BLASULONG base_address = BASE_ADDRESS;
#endif
-#if __STDC_VERSION__ >= 201112L
+#ifdef HAVE_C11
static _Atomic int memory_initialized = 0;
#else
static volatile int memory_initialized = 0;
