Do not call host_detect_local_cpu when cross-compiling

Author: antoyo

gcc/config/aarch64/aarch64-jit.cc

@@ -30,7 +30,9 @@ along with GCC; see the file COPYING3.  If not see
 
 /* Implement TARGET_JIT_REGISTER_CPU_TARGET_INFO.  */
 
+#ifndef CROSS_DIRECTORY_STRUCTURE
 extern const char *host_detect_local_cpu (int argc, const char **argv);
+#endif
 
 void
 aarch64_jit_register_target_info (void)
@@ -40,6 +42,7 @@ aarch64_jit_register_target_info (void)
   (val & ((1ULL << number) - 1ULL) << start) >> start
 
   const char *params[] = {"arch"};
+#ifndef CROSS_DIRECTORY_STRUCTURE
   const char* local_cpu = host_detect_local_cpu (2, params);
   if (local_cpu != NULL)
   {
@@ -53,6 +56,7 @@ aarch64_jit_register_target_info (void)
     std::string cpu = arch.substr (arg_pos, end_pos - arg_pos);
     jit_target_set_arch (cpu);
   }
+#endif
 
   if (targetm.scalar_mode_supported_p (TImode))
   {