Limit direct sgemm to x86_64

common_param.h

@@ -175,9 +175,11 @@ BLASLONG (*ismin_k) (BLASLONG, float *, BLASLONG);
   int    (*ssymv_L) (BLASLONG, BLASLONG, float,  float  *, BLASLONG, float  *, BLASLONG, float  *, BLASLONG, float *);
   int    (*ssymv_U) (BLASLONG, BLASLONG, float,  float  *, BLASLONG, float  *, BLASLONG, float  *, BLASLONG, float *);
 
+#ifdef ARCH_X86_64
   void (*sgemm_direct) (BLASLONG, BLASLONG, BLASLONG, float *, BLASLONG , float *, BLASLONG , float * , BLASLONG);
   int  (*sgemm_direct_performant) (BLASLONG M, BLASLONG N, BLASLONG K);
-
+#endif
+  
   int    (*sgemm_kernel   )(BLASLONG, BLASLONG, BLASLONG, float, float *, float *, float *, BLASLONG);
   int    (*sgemm_beta     )(BLASLONG, BLASLONG, BLASLONG, float, float *, BLASLONG, float *, BLASLONG, float  *, BLASLONG);