Altering compile flags for newlib

[Vasili Galka]

Hi,

I would like to alter the gcc flags with which newlib is built.
So far I replaced line 51 in newlib-2.0.0/newlib/configure.host from
  newlib_cflags=
to
  newlib_cflags="new flags"

Is this the right/best way to do it?

Regards,
Vasili Galka