I meant, to use: 

#ifdef CONFIG_PA_RISC 

 // PA-RISC code 

#else 

 // x86 code 

#endif 

Then if CONFIG_PA_RISC is not defined, the compilation will go as before without the need of toolchain modification. 

But, of course, you're right, the difference is not that big. 

Best regards, 

Valentine.