+ const Architecture &arch = builder.get_current_arch();
+ const Architecture &native_arch = builder.get_native_arch();
+ if(arch.get_bits()!=native_arch.get_bits())
+ argv.push_back(format("-m%d", arch.get_bits()));
+
+ const string &cpu = arch.get_cpu();
+ if(!cpu.empty())
+ argv.push_back("-march="+cpu);
+