diff -uNr src.orig/BASE_Math.cxx src/BASE_Math.cxx
--- src.orig/BASE_Math.cxx	Wed Oct 14 17:15:48 1998
+++ src/BASE_Math.cxx	Tue Oct 13 23:45:18 1998
@@ -42,7 +42,7 @@
 
 //______________________________________________________________________________
 #if (defined(sun) && !defined(R__I386) && !defined(__SunOS_5_6)) || \
-    (defined(__OPTIMIZE__) && \
+    (defined(__OPTIMIZE__) && !defined(R__MKLINUX) && \
      (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 7)))
    extern "C" void sincos(Double_t, Double_t*, Double_t*);
 #else