diff --git a/crypto/cryptlib.c b/crypto/cryptlib.c
index 5fab45b2ec..8a793cad9b 100644
--- a/crypto/cryptlib.c
+++ b/crypto/cryptlib.c
@@ -745,6 +745,11 @@ int OPENSSL_NONPIC_relocated = 0;
 void OPENSSL_cpuid_setup(void)
 {
 }
+
+unsigned long OPENSSL_rdtsc(void)
+{
+    return 0;
+}
 #endif
 
 #if (defined(_WIN32) || defined(__CYGWIN__)) && defined(_WINDLL)