Newlib provided syscalls on SH

Hi all,

I'm trying to build newlib for SuperH(sh) architecture, and the syscalls 
under the "newlib/libc/sys/sh" directory

are built no matter whether "--disable-newlib-supplied-syscalls" is 
provided.The target is a bare-metal target

so I need to provide these syscalls myself, same as other bare-metal 
targets do.

I have checked the Makefile.am under the directory and there seems to be 
no special treatments for the "MAY_SUPPLY_SYSCALLS" option.

Do I have to patch newlib for this or is there another way overriding 
these syscalls?

P.S. The build environment is generated by Crosstool-NG.


Thanks & Best Regards,

Yilin Sun